![]() refrigerator containing multiple storage compartments
专利摘要:
REFRIGERATOR CONTAINING MULTIPLE STORAGE COMPARTMENTS. The present invention provides a refrigerator, comprising: a cabinet that defines a first storage compartment; a first door that is opened or closed to allow or prevent access to an interior of the first storage compartment; a storage device coupled to the first door to define a second storage compartment, where, when the first door is closed, the second storage compartment is arranged in the first storage compartment; and a second door connected to the first door and configured to be opened or closed to allow or prevent access to an interior of the second storage share, the interior of the second storage compartment being accessible when the first door is closed and the second the door is open, the first door including a plurality of first coupling pieces to which the storage device is attached, the storage device including: a frame and the basket including at least one second coupling piece interacting with at least at least one of the plurality of the first coupling parts, a front surface of the second door being positioned to be generally coplanar with at least a portion of a front surface of the first door. 公开号:BR112012016545B1 申请号:R112012016545-3 申请日:2010-09-15 公开日:2020-10-13 发明作者:Seungjin Oh;Jonghwa Lee 申请人:Lg Electronics Inc; IPC主号:
专利说明:
Technical Field The present disclosure relates to a refrigerator. Basis of the Technique Refrigerators are devices configured to store food in low temperature conditions. Such a refrigerator includes a main body provided with a storage compartment and a movable door connected to the main body to open and close the storage compartment. For example, the storage compartment can be divided into a refrigerator compartment and a freezer compartment, and the door includes a refrigerator compartment door, opening and closing the refrigerator compartment and a freezer compartment door, opening and closing the freezer compartment. Thus, a user must open the refrigerator compartment door and the freezer compartment door to remove food stored in the refrigerator compartment and the freezer compartment door. Disclosure of the Invention Technical problem The arrangements provide a refrigerator that includes a large storage compartment on a first door to improve storage efficiency and convenience for users, and the first door and a second door configured to close the storage compartment provide the sense of unity, improving so the appearance. Solution to the Problem In one embodiment, a refrigerator includes: a cabinet that defines a first storage compartment; a first door that is opened or closed to allow or prevent access to an interior of the first storage compartment; a storage device coupled to the first door to define a second storage compartment, where, when the first door is closed, the second storage compartment is arranged in the first storage compartment; and a second door connected to the first door and configured to be opened or closed to allow or prevent access to an interior of the second storage compartment, the interior of the second storage compartment being accessible when the first door is closed and the second the door is opened, the first door including a plurality of first coupling parts to which the storage device is attached, the storage device including: a structure; and a basket installed on the frame, each of which within the frame and the basket includes at least one second coupling part that interacts with at least one of the plurality of the first coupling parts, with a front surface of the second door being positioned to be generally coplanar with at least a portion of a front surface of the first door. In another embodiment, a refrigerator includes: a cabinet that defines a first storage compartment, a first door that is opened or closed to allow or prevent access to an interior of the first storage compartment; a storage device coupled to a rear surface of the first door to define a second storage compartment, whereby, when the first door is closed, the second storage compartment is arranged in the first storage compartment; and the second door connected to the first door and configured to be opened or closed to allow or prevent access to an interior of the second storage compartment, the storage device including: a structure defining the second storage compartment; a basket installation part arranged in the second storage compartment; and a basket slidingly installed over the basket installation part, the basket installation part and the basket are accessible when the first door is closed and at least the second door is opened, with a front surface of the second door being positioned to be generally coplanar with at least a portion of a front surface of the first door. In another embodiment, a refrigerator includes: a cabinet that defines a first storage compartment; a first door that is opened or closed to allow or prevent access to an interior of the first storage compartment; a storage device coupled to the first door to define a second storage compartment, the second storage compartment being disposed within the first storage compartment when the first door is closed; and the second door connected to the first door and configured to be opened or closed to allow or prevent access to an interior of the second storage compartment when the storage device is arranged within the first storage compartment, the storage device including : a structure that defines the second storage compartment; the basket installation part arranged in the second storage compartment, and defining a receiving part; a first basket received at the receiving part of the basket installation part such that the first basket is removed; and a second basket removably placed on an upper surface of the basket installation part, a front surface of the second door being positioned to be generally coplanar with at least a portion of a front surface of the first door. In another embodiment, a refrigerator includes: a cabinet that defines a first storage compartment; a first door that is opened or closed to allow or prevent access to an interior of the first storage compartment; a storage device coupled to the first door to define a second storage compartment which is arranged within the first storage compartment when the first door closes; and the second door connected to the first door to open and close the second storage compartment, the storage device including: a structure defining the second storage compartment; a first basket attached to the structure; the basket installation part arranged in the second storage compartment; and a second basket removably installed over the basket installation part, the second door being configured to open when the first door is closed to provide access to the storage device, with a front surface of the second door being positioned to be usually coplanar with at least a portion of a front surface of the first door. In another embodiment, a refrigerator includes: a cabinet that defines a first storage compartment; a first door that is opened or closed to allow or prevent access to an interior of the first storage compartment; a storage device coupled to the first door to define a second storage compartment, where, when the first door is closed, the second storage compartment is arranged in the first storage compartment; the second door connected to the first door and configured to be opened or closed to allow or prevent access to an interior of the second storage compartment, the interior of the second storage compartment being accessible when the first door is closed and the second door is opened; a first hinge that pivotally connects the first door to the cabinet; and a second hinge that pivotally connects the second door to the first door, a hinge axis of the second hinge being disposed closer to a side surface of the first door than a hinge axis of the first hinge is. In another embodiment, a refrigerator includes: a cabinet that defines a first storage compartment; a first door that is opened or closed to allow or prevent access to an interior of the first storage compartment; a storage device coupled to the first door to define a second storage compartment, where, when the first door is closed, the second storage compartment is arranged in the first storage compartment; the second door connected to the first door and configured to be opened or closed to allow or prevent access to an interior of the second storage compartment, the interior of the second storage compartment being accessible when the first door is closed and the second door is opened; a locking unit provided for the rear surface of the first door and the rear surface of the second door to selectively confine the first door to the second door by a pressure operation; and a limiting member provided for one of the front surface of the first door and the rear surface of the second door to prevent rotation of the second door from inertia. In another embodiment, a refrigerator includes: a cabinet that defines a first storage compartment; a first door that is opened or closed to allow or prevent access to an interior of the first storage compartment; a storage device coupled to the first door to define a second storage compartment, where, when the first door is closed, the second storage compartment is arranged in the first storage compartment; the second door connected to the first door and configured to be opened or closed to allow or prevent access to an interior of the second storage compartment, the interior of the second storage compartment being accessible when the first door is closed and the second door is opened; the locking unit provided for the first door and the second door to selectively confine the second door to the first door; and a release member provided for the first door and the second door and pressed to release the locking unit. In another embodiment, a refrigerator includes: a cabinet that defines a first storage compartment; a first door that is opened or closed to allow or prevent access to an interior of the first storage compartment, a storage device coupled to the first door to define a second storage compartment, when, when the first door is closed, the second storage compartment is arranged in the first storage compartment; the second door connected to the first door and configured to be opened or closed to allow or prevent access to an interior of the second storage compartment, the interior of the second storage compartment being accessible when the first door is closed and the second door is opened; a rotating shelf connected to the first door; and a connection assembly that connects the shelf to the second door to rotate the shelf forward when the second door is opened. In another embodiment, a refrigerator includes: a cabinet that defines a first storage compartment; a first door that is opened or closed to allow or prevent access to an interior of the first storage compartment; a storage device coupled to the first door to define a second storage compartment, where, when the first door is closed, the second storage compartment is arranged in the first storage compartment; and the second door connected to the first door and configured to be opened or closed to allow or prevent access to an interior of the second storage compartment, the interior of the second storage compartment being accessible when the first door is closed and the second the door is opened, the second door including: a door case forming a rear exterior of the door; a pair of cover decorations respectively coupled to an upper end and a lower end of the door case; a pair of side decorations respectively coupled to a left end and a right end of the door case; a door plate placed on the upper surfaces of the cover decorations and the side decorations to form a front exterior thereof; and an insulating layer between the door plate and the door case, the door plate being formed of tempered glass. In another embodiment, a refrigerator includes: a cabinet that defines a first storage compartment; a first door that is opened or closed to allow or prevent access to an interior of the first storage compartment; a storage device coupled to the first door to define a second storage compartment, where, when the first door is closed, the second storage compartment is arranged in the first storage compartment; and the second door connected to the first door and configured to be opened or closed to allow or prevent access to an interior of the second storage compartment, the interior of the second storage compartment being accessible when the first door is closed and the second the door is opened, the second door including: a door case forming a rear exterior of the door; a pair of cover decorations respectively coupled to an upper end and the lower end of the door case; a pair of side decorations respectively coupled to a left end and the right end of the door case; the door plate placed on top surfaces of the cover decorations and the side decorations to form a front exterior thereof; and an insulating layer between the door plate and the door case, a portion of the door case between the lower end and a middle of the second door being provided with an inlet through which a foaming agent to form the layer insulation is injected. In another embodiment, a method for making the refrigerator includes: a cabinet that defines a first storage compartment; a first door that is opened or closed to allow or prevent access to an interior of the first storage compartment; a storage device coupled to the first door to define a second storage compartment, where, when the first door is closed, the second storage compartment is arranged in the first storage compartment; and the second door connected to the first door and configured to be opened or closed to allow or prevent access to an interior of the second storage compartment, the interior of the second storage compartment being accessible when the first door is closed and the second the door is opened, the second door including: a door case forming a rear exterior of the door; a pair of cover decorations respectively attached to the upper and lower ends of the door case; a pair of side decorations respectively attached to the left and right side ends of the door case; the door plate mounted on the upper surfaces of the cover decorations and the side decorations to form a front exterior thereof; and an insulation layer formed in a space between the door plate and the door case, an entrance in which a foaming agent is injected to form the insulation layer is formed in the door case at a predetermined position between the lower end and center of the second door, the method including: injecting the foaming agent to form the insulating layer at the entrance in a state where the second door is tilted such that the lower end of the second door is higher than the end top of the second door. In another embodiment, a refrigerator includes: a cabinet that defines a first storage compartment; a first door that is opened or closed to allow or prevent access to an interior of the first storage compartment; a storage device coupled to the first door to define a second storage compartment, where, when the first door is closed, the second storage compartment is arranged in the first storage compartment; the second door connected to the first door and configured to be opened or closed to allow or prevent access to an interior of the second storage compartment, the interior of the second storage compartment being accessible when the first door is closed and the second door is opened; the second door including: a door case forming a rear exterior of the door; a gasket that extends along one edge of the door case; a pair of metal cover decorations respectively attached to the upper and lower ends of the door case; a pair of side decorations respectively attached to the left and right ends of the door case; the door plate mounted on the upper surfaces of the cover decorations and the side decorations to form a front exterior thereof; an insulating layer formed in a space between the door plate and the door case; and a solo member connecting the side decorations. In another embodiment, a refrigerator includes: a cabinet that defines a first storage compartment; a first door that is opened or closed to allow or prevent access to an interior of the first storage compartment, the first door having an opening; a storage device coupled to the first door to define a second storage compartment, where, when the first door is closed, the second storage compartment is arranged in the first storage compartment, and the opening is configured to communicate with the second storage compartment; the second door connected to the first door and configured to be opened or closed to allow or prevent access to an interior of the second storage compartment, the interior of the second storage compartment being accessible through the opening when the first door is closed and the second door is opened; an inclined surface arranged on an inner edge of the opening; and a gasket attached to the rear surface of the second door, the gasket coming into contact with the inclined surface when the second door is closed. In another embodiment, a refrigerator includes: a cabinet that defines a first storage compartment; a first door that is opened or closed to allow or prevent access to an interior of the first storage compartment; a storage device coupled to the first door to define a second storage compartment, where, when the first door is closed, the second storage compartment is arranged in the first storage compartment; the second door connected to the first door and configured to be opened or closed to allow or prevent access to an interior of the second storage compartment, the interior of the second storage compartment being accessible when the first door is closed and the second door is opened; a gasket provided for one of the first door and the second door; a metal fastening member provided for one of the first door and the second door; and a magnetic member provided for the door contacting the door provided with the fixing member and selectively contacting the fixing member, the first door being provided with an opening that allows access to the storage device while the first door is closed, and the gasket, the fixing member, and the magnetic member are arranged in a region adjacent to an edge of the opening. The details made and more details will be indicated in the accompanying drawings and in the description below. Our other resources will be apparent from the description and drawings, and from the claims. Advantageous Effects of the Invention According to the modalities, the baskets arranged along the upward and downward directions can be used to effectively store food in the second storage compartment. In addition, since the baskets can be removed from the housing device, and taken out through the opening of the first door, the food can be easily placed or removed in or from the baskets. In addition, since a second door has the same left and right length as the left and right length of the first door, the appearance of the refrigerator compartment door is improved. In addition, a group of a second coupling part is arranged in the structure, and the other group is arranged in the basket. Thus, the load of the structure applied to the basket can be reduced. In addition, the basket load applied to the structure can be reduced. Thus, damage to the boundaries between the second coupling part and the first basket or frame respectively can be prevented. In addition, since the space into which a portion of the second coupling part is inserted is disposed between a first projection part and the second projection part, a second coupling part contacts the first projection part to prevent rotation of the housing device and maintain the stable coupling of the housing device to the lid of the refrigerator compartment. In addition, since the storage compartment of the first door is large, storage efficiency can be improved. In addition, since the second door and the first door rotate in the same direction, the large storage compartment can be easily opened and closed, thus improving convenience for users. In addition, since the first door and the second door share the upper, left, right and bottom surfaces of a second door, it is provided with the door handle, the first door and the second door can be perceived as a single body on the side from the front. Thus, the exterior of the refrigerator can be improved. Brief Description of Drawings Fig. 1 is a perspective view showing a refrigerator according to an embodiment. Fig. 2 is a perspective view showing a refrigerator with a first storage compartment being opened, according to an embodiment. Fig. 3 is a perspective view illustrating a refrigerator with a second storage compartment being opened, according to an embodiment. Fig. 4 is a perspective view showing the rear surface of a refrigerator compartment door according to an embodiment. Fig. 5 is a perspective view illustrating a storage device according to an embodiment. Fig. 6 is an enlarged perspective view illustrating a storage device according to an embodiment. Fig. 7 is a perspective view showing a structure according to an embodiment. Fig. 8 is a side view illustrating a state where a storage device is coupled to the door of the refrigerator compartment. Fig. 9 is a perspective view illustrating a state where the basket is removed when the second door opens a second storage compartment. Fig. 10 is an enlarged perspective view illustrating a refrigerator including the first door and the second door according to an embodiment. Fig. 11 is an enlarged perspective view showing a first hinge and a second hinge according to an embodiment. Fig. 12 is a side view illustrating an installation status of the first and second hinges of Fig. 11. Fig. 13 is a plan view showing the first and second hinges of Fig. 11 when the first and second doors of Fig. 10 are closed. Fig. 14 is a plan view showing the first and second hinges when the first door is opened. Fig. 15 is a plan view showing first and second hinges when the second door is opened. Fig. 16 is a perspective view illustrating a refrigerator when the second door is opened according to an embodiment. Fig. 17 is a partial perspective view illustrating a second door with a limiting member coupling structure according to an embodiment. Fig. 18 is a partial side view showing a refrigerator with a limiting member when the first and second doors are closed according to an embodiment. Fig. 19 is a perspective view illustrating a refrigerator when the second door is opened according to an embodiment. Fig. 20 is a schematic view illustrating a limiting member when the first and second doors are opened according to an embodiment. Fig. 21 is a schematic view illustrating a limiting member when the second door is closed according to an embodiment. Fig. 22 is a perspective view showing a refrigerator according to an embodiment. Fig. 23 is a perspective view illustrating a refrigerator when the second door is opened according to an embodiment. Fig. 24 is an enlarged perspective view illustrating a locking device and an opening unit according to an embodiment. Fig. 25 is a cross-sectional view taken along line 4-4 'in Fig. 24. Fig. 26 is a cut-away perspective view taken along line 5-5 'of Fig. 25 while the second door is closed. Fig. 27 is a cut-away perspective view taken along line 6-6 ‘in Fig. 25 while the second door is closed. Fig. 28 is a rear view illustrating a locking assembly when a stop is pushed by a locking rod, according to an embodiment. Fig. 29 is a rear view illustrating a locking assembly when the second door is closed and a stop is attached to a locking meat, according to an embodiment. Fig. 30 is a schematic view illustrating the locking device and the opening unit when the second door is closed, according to an embodiment. Fig. 31 is a schematic view illustrating the locking device and the opening unit when the opening unit is operated, according to an embodiment. Fig. 32 is a schematic view illustrating the locking device and the opening unit when the second door is opened, according to an embodiment. Fig. 33 is a perspective view showing a refrigerator according to an embodiment. Fig. 34 is a perspective view showing a refrigerator when the second door is opened, according to an embodiment. Fig. 35 is a schematic view illustrating a locking unit when the second door is closed. Fig. 36 is a schematic view illustrating the locking unit when a signal to open the second door is inserted. Fig. 37 is a perspective view showing a refrigerator when the second door is opened, according to an embodiment. Fig. 38 is a schematic view illustrating a shelf rotated by opening the second door. Fig. 39 is a schematic view showing the rear surface of a first door when the second door is closed. Fig. 40 is a schematic view showing a joint member coupled to a connection set according to an embodiment. Fig. 41 is an enlarged perspective view illustrating a connection set according to an embodiment. Figs. 42A, 42B and 42C are schematic views illustrating a connection assembly operation. Fig. 43 is an enlarged perspective view illustrating an installation structure for the second door. Fig. 44 is a schematic view illustrating a lower hinge assembly when the second door is closed. Fig. 45 is a schematic view illustrating the lower hinge assembly when the second door is opened. Fig. 46 is a perspective view illustrating a second door. Fig. 47 is an enlarged perspective view showing the front side of the second door. Fig. 48 is an enlarged perspective view showing the rear side of the second door. Fig. 49 is a cross-sectional view taken along line 7-7 'of Fig. 46. Fig. 50 is a cross-sectional view taken along line 8-8 'of Fig. 46. Fig. 51 is a perspective view illustrating a second door when only the door plate is removed from the second door. Fig. 52 is an enlarged perspective view showing a second door coupled to the reinforcement members according to an embodiment. Fig. 53 is a cross-sectional view taken along line 9-9 'in Fig. 52. Fig. 54 is an enlarged perspective view showing the front side of the second door. Fig. 55 is an enlarged perspective view showing the rear side of the second door. Fig. 56 is a perspective view showing a second door installed on a jig. Figs. 57 to 61 are graphs that illustrate filling states of a defoaming agent according to giga angles. Fig. 62 is an enlarged perspective view showing a refrigerator with a second door removed according to an embodiment. Fig. 63 is a graph showing the variations in the hardness of the gaskets formed from different materials according to a temperature variation according to a modality. Fig. 64 is an enlarged perspective view showing the front side of the second door. Fig. 65 is a rear view showing a second door on which a ground wire is laid. Figs. 66A and 66B are schematic views that illustrate the static electricity that occurs in the second port. Fig. 67 is a perspective view illustrating a refrigerator including the second door being opened according to an embodiment. Fig. 68 is a perspective view showing a refrigerator including the second door according to another embodiment. Fig. 69 is a perspective view showing a refrigerator including the second door according to another embodiment. Fig. 70 is a perspective view showing a refrigerator when the second door is opened, according to an embodiment. Fig. 71 is a partial front view showing a first door according to an embodiment. Fig. 72 is a rear view showing a second door according to an embodiment. Fig. 73 is a cross-sectional view showing a door of the refrigerator compartment when the second door is opened, according to an embodiment. Fig. 74 is a cross-sectional view illustrating the refrigerator compartment door when the second door is closed. Fig. 75 is a perspective view illustrating a refrigerator compartment door when the second door is opened, according to an embodiment. Fig. 76 is a cross-sectional view illustrating a refrigerator compartment door according to an embodiment. Fig. 77 is a perspective view illustrating a refrigerator when the second door is opened according to an embodiment. Fig. 78 is a cross-sectional view illustrating a refrigerator compartment door according to an embodiment. Fig. 79 is a perspective view showing a door of the refrigerator compartment when the second door is opened, according to an embodiment. Fig. 80 is a perspective view showing a refrigerator when the second door is opened, according to an embodiment. Fig. 81 is an enlarged perspective view illustrating a second door. Fig. 82 is an enlarged perspective view illustrating a refrigerator compartment door with the second door and a lower hinge. Fig. 83 is a partial sectioned perspective view showing the refrigerator compartment door coupled to the second door. Fig. 84 is a front view showing the refrigerator when the second door is closed. Fig. 85 is a bottom view showing a portion of the second door with the lower hinge assembly when the second door is closed. Fig. 86 is a front view showing the refrigerator when the second door is opened. Fig. 87 is a bottom view showing a portion of the second door with the lower hinge assembly when the second door is opened. Mode for the Invention Reference will be made in detail to the modalities of this disclosure, examples of which are shown in the accompanying drawings. Fig. 1 is a perspective view showing a refrigerator according to an embodiment. Fig. 2 is a perspective view showing a refrigerator with a first storage compartment being opened, according to an embodiment. Fig. 3 is a perspective view illustrating a refrigerator with a second storage compartment being opened, according to an embodiment. With reference to Figs. 1 to 3, a refrigerator 1 according to one embodiment includes a cabinet 10 that provides a storage compartment, and doors 20 and 30 that open and close to provide access to an interior of the storage compartment. The storage compartment includes a freezer compartment 102 and a cooler compartment 104. The freezer compartment 102 and the cooler compartment 104 can be arranged along the left and right direction, and be separated by a separation part. Doors 20 and 30 include a freezer compartment door (which is also denoted by 20), and the refrigerator compartment door (which is also denoted by 30), respectively. The freezer compartment door 20 and the refrigerator compartment door 30 open and close to provide or prevent access to an interior of the freezer compartment 102, and open and close to provide or prevent access to an interior of the refrigerator compartment 104, respectively. A storage device 40 is arranged on the rear surface of the refrigerator compartment door 30 to accommodate the food. The storage device 40 includes the structure 41 which provides an accommodation space. The frame 41 is removably attached to the rear surface of the refrigerator compartment door 30. The cooler compartment 104 can be divided into a plurality of spaces by one or more shelves 105. When the refrigerator compartment door 30 closes the refrigerator compartment 104, the frame 41 is arranged in the refrigerator compartment 104. In other words, when the refrigerator compartment door 30 is closed, the accommodation space provided by the structure 41 of the storage device 40 it is arranged in the cooler compartment 104. In the current embodiment, the cooler compartment 104 can be referred to as a first storage compartment, and a space provided by structure 41 can be referred to as a second storage compartment 405. Hereinafter, the first storage is also denoted by 104. Thus, when the refrigerator compartment door 30 closes the first storage compartment 104, the second storage compartment 405 is disposed within the first storage compartment 104. The refrigerator compartment door 30 includes the first door 310 opening and closing the first storage compartment 104, and the second door 340 pivotally connected to the first door 310 to open and close the second storage compartment 405. Thus, the second storage compartment 405 is accessible when the second door 340 opens. The first door 310 is pivotally coupled to the cabinet 10 through a hinge assembly. The hinge assembly includes a second hinge 51 connecting the second door 340 to the first door 310, and a first hinge 52 connecting the first door 310 to the cabinet 10. An opening 316 is arranged in the first door 310 such that the food is removed from or placed in the second storage compartment 405 when the first door 310 closes the first storage compartment 104. Thus, when the first door 310 closes the first storage compartment 104, opening 316 is opened to place or remove food in or from the second storage compartment 405. The left and right width of the second door 340 is the same as that of the first door 310. Thus, the uniqueness of the second door 340 and the first door 310 is improved, so that the appearance of the refrigerator compartment door 30 can be improved . The rear surface of the second door 340 is provided with a lock hook 341 for coupling to the first door 310, and a second part 312 of the first door 310 is provided with a lock notch 317 for coupling with the lock hook 341. Since the structures of the lock hook 341 and the lock notch 317 are well known in the art, their descriptions will be omitted. Thus, in the state where the first door 310 closes the first storage compartment 104, when the front surface of the second door 340 is pressed, the latch hook 341 is released from the latch notch 317, so that the second door 340 can be rotated. The rear surface of the first door 310 is provided with a seal319 to prevent cold air from the first storage compartment 104 from leaking. A magnet is disposed on seal 319, and the attraction between a magnet and the front surface of an enclosure 10 maintains the state where the first door 310 closes the first storage compartment 104. The rear surface of the first door 310 can be coupled to one or more baskets 318 for storing food. Fig. 4 is a perspective view showing the rear surface of a refrigerator compartment door according to an embodiment. With reference to Figs. 2 to 4, the refrigerator compartment door 30 includes the first door 310 and the second door 340 as described above. A side surface of the first door 310 is protruding. In detail, the first door 310 includes a first part 311, and the second part 312 extending to the upper side of the first part 311. The second part 312 has a thickness that is less than that of the first part 311. The opening 316 is arranged in the second part 312, and the second door 340 is connected to the second part 312, to open and close the opening 316 and the second storage compartment 405. The upper side of the first part 311 is provided with a clamping part 313 which is held by a user. The clamping part 313 extends upwards from the upper surface of the first part 311. For a user to hold the clamping part 313, the clamping part 313 is spaced from the front surface of a second part 312 and the bottom surface of the second door 340. That is, the up and down length of the second door 340 is lower to that of the second part 312. When the clamping part 313 held by a user is pulled, the first door 310 is rotated to open the first storage compartment 104. The first door 310 includes an outer case 321 and a lining of port 322 coupled to outer case 321. Substantially, the lining of port 322 closes the first storage compartment 104. The door liner 322 includes a plurality of ditches 323 which are spaced from each other along the left and right directions. Each pit 323 is elongated along the upward and downward direction. The pits 323 constitute a portion of the lining of port 322. The storage device 40 and a part of the baskets 318 are arranged between the pits 323. Each pit 323 includes one or more first coupling parts for coupling with storage device 40. To stably couple storage device 40 to each of the pit 323, a plurality of first coupling parts 330, 331, and 332 can be arranged in each of the ditches 323. The first coupling parts 330, 331, and 332 are spaced apart from each other along the upward and downward direction. Each of the first coupling parts 330, 331, and 332 includes a first projection part 333 and a second projection part 334. The first and second projection part 333 and 334 project from each of the pits 323 in the direction where they become closer to each other. The first and second projection parts 333 and 334 are spaced from each other along the front and rear direction of the refrigerator compartment door 30. Thus, a space is formed between the first and second projection parts 333 and 334. The first projection part 333 is adjacent to the opening 316 of the first door 310. That is, the distance between the first projection part 333 and the opening 316 is less than the distance between the second projection part 334 and the opening 316. A protruding portion 323a which is protruded to a predetermined depth is arranged on the rear surface of the first door 310 corresponding to the underside of the storage device 40. Thus, a horizontal protruding length of the pits 323 in the region provided with the storage device 40 is less than a horizontal protrusion length in the region corresponding to the lower side of the storage device 40. Thus, a rear and front width of the basket installed on the rear surface of the first door 310, that is, on the rear surface of the first door 310 corresponding to the underside of the storage device 40 can be greater than a rear and front width of the basket installed in the storage device 40. A coupling relationship between the storage device 40 and the first coupling parts 330, 331, and 332 will be described with reference to Fig. 8. Fig. 5 is a perspective view illustrating a storage device according to an embodiment. Fig. 6 is an enlarged perspective view illustrating a storage device according to an embodiment. Fig. 7 is a perspective view showing a structure according to an embodiment. With reference to Figs. 4 to 7, storage device 40 includes structure 41, and a plurality of baskets 510, 540, and 560 for storing food. Baskets 510, 540, and 560 are spaced from each other along the upward and downward direction on the frame 41. Baskets 510, 540, and 560 include a first basket which is also denoted by 510, a second basket which is also denoted by 540 and arranged on the underside of the first basket 510, and a third basket which is also denoted by 560 and arranged between a first basket 510 and the second basket 540. The first basket 510 is attached to the frame 41 via a coupling member like a screw. The second basket 540 and the third basket 560 are removably attached to the frame 41. As a matter of course, the first basket 510 can be removed from the frame 41. When the second door 340 opens the second storage compartment 405, the second basket 540 and the third basket 560 can be removed from the second storage compartment 405 through opening 316 of the first door 310. Thus, food can be efficiently stored in the second storage compartment 405, using the first basket 510, the second basket 540, and the third basket 560, which are arranged in an upward and downward direction. The frame 41 includes both side surfaces 401, a rear surface 402, a lower surface 403, and an upper surface 404 to provide the second storage compartment 405. The frame 41 includes one or more communication holes 406 such that a first storage compartment 104 communicates with the second storage compartment 405. The rear surface 402 of structure 41 is provided with an opening 408 for placing or removing food in or from the second storage compartment 405 in the state where the first door 310 opens the first storage compartment 104. The opening 408 can be opened and closed by a 411 cover. The rear surface 402 is provided with a hinge coupling part 410 for coupling with the hinge 412 provided for the cover 411. The hinge 412 can be arranged in the upper portion of the cover 411. Thus, the cover 411 can rotate around the hinge 412 arranged in the upper portion of the cover 411. The rear surface 402 is provided with a stop 409 which stops the cover 411 at a predetermined position when the cover 411 rotates in one direction by closing the opening 408. Thus, a user can place food in or remove the food from the second storage compartment 405 through opening 316 of first door 310, or opening 408 of frame 41. Cover 411 is provided with a hole 413 such that a first storage compartment 104 communicates with the second storage compartment 405. The upper portion of the frame 41 is provided with a plurality of coupling projections 430 for coupling with the first basket 510. In detail, the coupling projections 430 are arranged on the upper portions respectively of the side surfaces 401. A support 420 is integrally formed with the middle portion of the structure 41. Alternatively, the support 420 can be removably coupled to the structure 41. Support 420 connects side surfaces 401 to each other. The front and rear length of support 420 is greater than that of side surfaces 401. That is, support 420 includes an extension part 420a that extends to the front side of side surfaces 401 in a side view of the frame 41. The extension part 420a includes a plurality of vertical surfaces 421 that are respectively arranged on both sides of the extension part 420a, and horizontal surfaces 423 that extend horizontally from the vertical surfaces 421. The horizontal surfaces 423 extend in the opposite directions. away from vertical surfaces 421, respectively. The sides of the vertical surfaces 421 respectively are provided with the second coupling parts 425 which interact with the first coupling parts 331. The second coupling parts 425 can be integrally formed with the vertical surfaces 421 and the horizontal surfaces 423. Thus, a load applied to the support 420 is prevented from damaging the boundaries between the second coupling part 425 and the support 420 when the second coupling parts 425 are coupled to the first coupling parts 331. The second coupling parts 425 include a horizontally extending insertion part 426 and an insertion part 427 that extends downwardly from an end of the insertion part 426. Insertion part 427 is inserted in a space 335 between a first and second projection parts 333 and 334, and the placement part 426 is placed on the upper surface of the second projection part 334. That is, the second projection part 334 supports the placement part 426. The width of the gap 335 can be equal to or greater than the width of the insertion part 427. Alternatively, the insertion part 427 can be arranged in the middle of the insertion part 426. In this case, when the insertion part 427 is inserted into the space 335, the first projection part 333 and the second projection part 334 can support the part placement 426. The surfaces of the vertical surfaces 421, which face each other, i.e., another surface of each of the vertical surfaces 421, is provided with guide strips 422 which guide the installation of the basket installation part 550 to be described later. The lower surface 403 of the structure 41 includes an extension part 441 that extends to the front side of the side surfaces 401 in the side view of the structure 41. The vertical surfaces 442 are arranged on both sides of the extension part 441, respectively. The vertical surfaces 442 are provided respectively with the second coupling part 445 which interacts with the first coupling parts 330. The second coupling parts 445 arranged in the lower portion of the structure 41 have the same shapes as those of the second coupling parts 425 arranged in the middle portion of the structure 41. That is, in the current embodiment, the structure 41 includes the second coupling parts 425 and 445 that are arranged along the upward and downward direction. Thus, the loads of the structure 41 and food can be distributed to the second coupling parts 425 and 445. The first basket 510 has open front, top and rear surfaces. That is, the first basket 510 includes a closed bottom surface 511 and both closed side surfaces 513. The bottom surface 511 is provided with one or more holes 512 through which cold air can pass. The side surfaces 513 are respectively supplied with the second coupling parts 515 which interact with the first projection parts 333. Since the second coupling parts 515 have the same shapes as those of the second coupling parts 425 and 445 provided for the structure 41, their descriptions will be omitted. The side surfaces 513 are respectively provided with fixing parts 517 to be fixed to the frame 41. The fixing parts 517 are provided with coupling holes 518 through which the coupling members pass. The coupling members pass through the coupling holes 518 and are coupled to the coupling bosses 430 of the frame 41. Each of the second coupling parts 515 is integrally formed with a side surface 513 and the clamping part 517. Thus, loads from the first basket 510 and food can be prevented from damaging the boundaries between a first basket 510 and the second coupling parts 515. According to the current embodiment, one group of the second coupling parts is disposed on the structure 41, and the other group is disposed on the first basket 510. Thus, the load of the structure 41 for the first basket 510 can be reduced. In addition, the load from the first basket 510 to the frame 41 can be reduced. Thus, damage to the boundaries between the second coupling parts and the first basket, or between the second coupling parts and the structure can be prevented. The first basket 510 is connected with the cover 520 to cover the food placed on the first basket 510. The cover 520 includes a front surface 521, an oblique surface 522 that extends obliquely from the front surface 521, and a coupling of the surfaces side 523 connected to the front surface 521 and the oblique surface 522. Axes of rotation 524 are arranged on the side surfaces 523, respectively. The axes of rotation 524 are inserted into the insertion holes of the axis 514 arranged on the side surfaces 513 of the first basket 510. Thus, the cover 520 covers the food on the first basket 510 by means of a rotation movement. Since the cover 520 covers the food placed on the first basket 510, when the second door 340 opens the second storage compartment 405, the food placed on the first basket 510 is prevented from being exposed to the outside. The basket installation part 550 is placed on the support 420. The basket installation part 550 includes a coupling of the side surfaces 551 and an upper surface 555. The side surfaces 551 and the upper surface 555 provide the receiving part 557 that receives the second 540 basket. The side surfaces 551 are provided with a second guide part 552 to guide a sliding installation along the front and rear direction of the second basket 540. The second guide part 552 interacts with the first guide part 542 provided for the second basket 540. For example , the first guide part 542 can slide into the second guide part 552. The second guide part 552 extends along the front and rear direction over the side surfaces 551, respectively. The second guide part 552 includes the first parts 553 and second parts 554 which extend from the first parts 553 towards the rear side (towards the rear surface of the frame 41). Along the upward and downward direction, the first part 553 has a height greater than that of the second part 554. The height of the first part 553 may decrease towards the second part 554. The upper surface 555 of the basket installation part 550 is provided with a plurality of movement prevention parts 556 to prevent front and rear movement and left and right movement of the third basket 560 when the third basket 560 is placed on the surface upper 555. The motion prevention parts 556 are arranged at both ends of the upper surface 555. The second basket 540 has an open top surface. When the second basket 540 is installed on the basket installation part 550, the open top surface of the second basket 540 is covered by the upper surface 555 of the basket installation part 550. Both side surfaces 541 of the second basket 540 are provided with the first guide part 542 that interacts with the second guide part 552. The first guide part 542 extends along the front and rear direction over the side surfaces 541 of the second basket 540, respectively. The second guide part 552 receives the first guide part 542. The lengths up and down the inlets of the first parts 553 are greater than those of the first guide part 542. The lengths up and down of the second parts 554 are equal to or greater than those of the first guide part 542. Since the lengths up and down the inlets of the first parts 553 are greater than those of the first guide part 542, the first guide part 542 can be easily inserted into the first parts 553. The first parts 553 of the second guide part 552 are provided with the first projection parts 553a inserted in the first guide part 542, and the first guide parts 542 are provided with the first insertion recesses 543 into which the first projection parts 553a are inserted. . The first guide parts 542 are provided with the second projection parts 544, and the second parts 554 of the second guide part 552 are provided with second insertion recesses 554a into which the second projection parts 544 are inserted. The second projection parts 544, the first projection parts 553a, the first insertion recesses 543, and the second insertion recesses 554a prevent the forward and backward movement of the second basket 540 in the state where the second basket 540 is installed on the basket installation part 550. The left and right length of the second basket 540 may be less than that of the opening 316 such that a second basket 540 can be removed from the basket installation part 550 through the opening 316. The third basket 560 is placed on the upper surface 555 of the basket installation part 550. The third basket 560 is placed on and removed from the basket installation part 550 along the upward and downward direction. The third basket 560 has an open top surface, the front surface 561, both side surfaces 562, and a bottom surface (not shown). Each of the side surfaces 562 of the third basket 560 includes a first side surface 563 which extends backwards from the front surface 561, a second side surface 564 extending backwards from the first side surface 563, and a third surface side 565 extending backwards from the second side surface 564. The first side surfaces 563 are substantially parallel to the third side surfaces 565. The second side surfaces 564 extend obliquely in the directions in which they depart from each other (in the outer directions) of the first side surfaces 563. Because of the second side surfaces 564, the distance between the first side surfaces 563 is less than the distance between the third side surfaces 565. When the third basket 560 is placed on the basket installation part 550, the movement prevention parts 556 are arranged on the exteriors of the first side surfaces 563 of the third basket 560. The movement prevention parts 556 prevent movement to the left and right of the third basket 560, and prevent the forward removal of the third basket 560 when the first door 310 or the second door 340 is moved. Thus, when the first door 310 is closed, the second door 340 can be opened to access the structure 41, the basket installation part 550, and the plurality of baskets 510, 540, and 560. Fig. 8 is a side view illustrating a state where a storage device is coupled to the door of the refrigerator compartment. With reference to Figs. 4 and 8, first, the second coupling parts 425, 445, and 515 of the storage device 40 are disposed between the pits 323 of the refrigerator compartment door 30 to couple the storage device 40 to the refrigerator compartment door 30. At this point, the second coupling parts 425, 445, and 515 are arranged between the pits 323 in the manner where the second coupling parts 425, 445, and 515 do not interfere with the first coupling parts 330, 331, and 332. As illustrated in Fig. 8, the second coupling parts 425, 445, and 515 do not interfere with the first coupling parts 330, 331, and 332. When the second coupling parts 425, 445, and 515 are disposed between the pits 323, the insertion parts 427 respectively of the second coupling parts 425, 445, and 515 are aligned with the spaces 335 between the first projection parts 333 and the second projection parts 334, respectively. In this state, the storage device 40 is moved downwardly to be coupled to the refrigerator compartment door 30. Then, the insertion parts 427 are inserted in the spaces 335, and the second projection parts 334 support the placement parts 426 of the second parts coupling 425, 445, and 515. Since the food is accommodated in the storage device 40 in the spaced positions of the second coupling parts 425, 445, and 515, when the food is accommodated in the storage device 40, the storage device 40 tends to rotate around the second parts coupling 425, 445, and 515. However, in the current embodiment, spaces 335 are provided to arrange insertion parts 427 between the first projection parts 333 and the second projection parts 334. Thus, insertion parts 427 come into contact with the first projection parts 333 to prevent rotation of the storage device 40 and to maintain the stable coupling of the storage device 40 to the door of the refrigerator compartment 30. When the storage device 40 is installed on the first door 310, the rear surface of the storage device 40 projects at a predetermined distance H from the rear surface of the first door 310. At least one of the baskets 318 can be installed on the rear surface of the first door 310 corresponding to the underside of the storage device 40. The rear surface of the basket 318 can project at a predetermined distance H from the rear surface of the first door 310. In detail, when the storage device 40 and the basket 318 are installed on the first door 310, the rear surfaces of the same protrude the same distance. That is, the rear surfaces of the storage device 40 and the basket 318 are arranged on the same extension line. Thus, when the first door 310 is closed, the storage device 40 and the basket 318 do not interfere with the shelves and drawers within the first storage compartment 104. Fig. 9 is a perspective view illustrating a state where the basket is removed when the second door opens a second storage compartment. With reference to Figs. 1 to 9, first, the front surface of the second door 340 is pressed to place or remove food in or from the second storage compartment 405. Then, the lock hook 341 and the lock notch 317 are released from each other so that the second door 340 can be rotated. After the second door 340 is rotated, a user can rotate the cover 520 covering the first basket 510. In addition, a user can lift the third basket 560 to the upper side of the basket installation part 550 to remove the third basket 560 from the basket installation part 550. In addition, a user can pull the second basket 540 forward such that a second basket 540 slides out of the second storage compartment 405. According to the modalities, the baskets arranged along the upward and downward direction can be used to efficiently store food in the second storage compartment. In addition, since the baskets can be removed from the accommodation device, and removed by opening the first door, the food can be easily placed in or removed from the baskets. In addition, since the second door has the same left and right length as the left and right length of the first door, the appearance of the refrigerator compartment door is improved. In addition, one group of the second coupling parts is disposed on the structure, and the other group is disposed on the basket. Thus, the load of the structure applied to the basket can be reduced. In addition, the basket load applied to the structure can be reduced. Thus, damage to the boundaries between the second coupling parts and the first basket or frame respectively can be prevented. In addition, since a space into which a portion of the second coupling part is inserted is disposed between the first projection part and the second projection part, the second coupling part comes into contact with the first projection part to prevent rotation of the accommodation device and maintain the stable coupling of the accommodation device to the door of the refrigerator compartment. Fig. 10 is an enlarged perspective view illustrating a refrigerator including the first door and the second door according to an embodiment. Fig. 11 is an enlarged perspective view showing a first hinge and a second hinge according to an embodiment. Fig. 12 is a side view illustrating an installation status of the first and second hinges of Fig. 11. Fig. 13 is a plan view showing the first and second hinges of Fig. 11 when the first and second doors of Fig. 10 are closed. From now on, a description of the same configuration as that of refrigerator 1 will be omitted. With reference to Figs. 10 to 13, as described above, the exterior of the refrigerator 1 can be formed by cabinet 10 and doors 20 and 30. Cabinet 10 defines a storage space, and doors 20 and 30 open and close the storage space. The refrigerator 1 can be a side-by-side refrigerator in which the freezer compartment 102 and the refrigerator compartment 104 are arranged on the left and right sides, respectively. The second door 340 can be provided for the refrigerator compartment door 30 that opens and closes the refrigerator compartment 104. The opening 316 provided for the first door 310 can extend from the clamping part 313 to a position adjacent to the upper end of the first door 310 and to the positions adjacent to the left and right ends of the first door 310. The front surface of the locking device storage 40 is to open to communicate with opening 316 of first door 310. A first installation part 310b is arranged on the upper surface of the first door 310. The second hinge 51 is attached to the first installation part 310b, and a portion of the first hinge 52 is arranged on the first installation part 310b. The first installation part 310b extends to a side end of the first door 310. A portion of the upper surface of the first door 310 has a protruding shape, and the first hinge 52 is arranged on the first installation part 310b which is lowered downwardly. Thus, the first hinge 52 is arranged in a lower position than the upper surface of the first door 310. The second door 340 opens and closes the opening 316, and is pivotally connected to the first door 310 through the second hinge 51. The second hinge 51 has an end fixed to the first installation part 310b of the first door 310, and is pivotally connected to the surface upper part of the second door 340. A lower hinge assembly to be described later is installed on the lower end of the second door 340, and is fixed to the front surface of the second door 340 through a hinge support to be described later. According to this structure, even when the first door 310 is closed, the second door 340 can rotate independently and selectively opens and closes the opening 316. The second door 340 rotates in the direction of rotation of the first door 310. A second installation part 340b provided with the second hinge 51 is recessed on the upper surface of the second door 340. The second installation part 340b extends to a side end of the second door 340. A portion of the upper surface of the second door 340 has a format skipped to the second part of installation 340b. Thus, the second hinge 51 is arranged on the second installation part 340b which is lowered downwardly, so that the second hinge 51 is arranged in a lower position than the upper end of the second door 340. In detail, a protected part 57 is arranged in front of the second installation part 340b. The protected part 57 forms the front surface of the second door 340. That is, the upper and lateral ends of the protected part 57 and the upper and lateral ends of the second door 340 are arranged in the same planes, respectively. This is because the second installation part 340b is recessed on the rear side of the upper surface of the second door 340. The protected part 57 covers the first hinge 52 and the second hinge 51 placed on the first installation part 310b and the second installation part 340b. That is, when viewed from the front side of the refrigerator 1, the first hinge 52 and the second hinge 51 are not exposed to the outside, and the second door 340 and the first door 310 can be perceived as a single body. The first hinge 52 is configured such that the first door 310 is pivotally installed on a cabinet 10. A portion of the first hinge 52 is arranged on the cabinet 10, and the other portion is arranged on the first installation part 310b. The first hinge 52 may include a first hinge plate 523 and a first hinge axis 524. The first hinge plate 523 can have a plate shape, so that the first hinge 52 can be attached to the case 10. The first hinge plate 523 can include a first coupling part 521 attached to the case 10, and a first extension 522 extending from the first coupling part 521 to the first port 310. The first coupling part 521 has fixing holes 521a for fixing the first hinge plate 523, an insertion hole 521b, and a fixing recess 521c. In detail, the fixing holes 521a are drilled such that fixation protrusions 11 on the upper surface of the cabinet 10 can be inserted into the fixing holes 521a. The insertion hole 521b is drilled with a predetermined length and a predetermined width. A confinement part 12 projecting from the upper portion of the cabinet 10 to secure a confinement lever 525 is inserted into the insertion hole 521b. The fixing recess 521c is recessed at the rear end of the first coupling part 521 to receive a fixing segment 13 projecting from the upper surface of the cabinet 10. The containment lever 525 is installed to secure the first hinge 52 installed on a cabinet 10, and is placed on the upper surface of the first coupling part 521 to secure the first hinge plate 523. The first extension 522 may extend from one end of the first coupling part 521, and may have a protruding or angled portion to be arranged on the first coupling part 521. An end of the first extension 522 can be folded towards the exterior of the first door 310, and is provided with a first hinge shaft 524. A first hinge axis 524 extends vertically downwardly from one end of the first extension 522, and is inserted into a first hinge recess 310a of the first door 310 to function as a center of rotation of the first door 310. A first hinge axis hinge 524 can have a tube shape that is open at the top and bottom sides, and has a cut. Thus, an electrical wire, a ground wire, or a water supply pipe, which is guided to the first door 310, can be guided through the interior of the first hinge shaft 524. A first hinge shaft 524 has a larger diameter than that of a second hinge shaft 514. This is because the first door 310 is larger than the second door 340. Furthermore, since the storage device 40 is installed on the first port 310, when the food is stored in the storage device 40, the first port 310 becomes heavier. Thus, the diameter of a first hinge shaft 524 can be large to stably support a first revolving door 310. Also, the diameter of a first hinge recess 310a into which a first hinge shaft 524 is inserted can be large. The second hinge 51 is configured such that the second door 340 is pivotally installed over the first door 310. A portion of the second hinge 51 is installed in the first installation part 310b, and the other portion is installed in the second installation part 340b. The second hinge 51 can include a second hinge plate 513 and a second hinge axis 514. The second hinge plate 513 has a plate shape to be coupled to the upper surface of the first door 310. In detail, the second hinge plate 513 can include the second coupling part 511 coupled to the first door 310 and a second extension 512 that extends from the second coupling part 511 to an axis of rotation of the second port 340. The second coupling part 511 is provided with a plurality of coupling holes 511a, and is coupled to the upper surface of the first port 310 through a coupling member like a screw. The second coupling part 511 is arranged inside the first hinge 52 (left side in Fig. 13). The second extension 512 extends externally from the second coupling part 511, and can be folded towards the side surface of the second door 340. An end of the second extension 512 is arranged outside an end of the first extension 522 of the first hinge 52 (right side in Fig. 13). In detail, the end of the second extension 512 can be provided with a second hinge axis 514. Thus, a second hinge axis 514 is disposed closer to the side edge of the second door 340 than a first hinge axis 524. That is, , a distance D1 from the outer end of the cooler compartment door 30 to the center of the second hinge axis 10 10 is less than a distance D2 from the outer end of the cooler compartment door 30 to the center of a first hinge axis. hinge 524. A first hinge shaft 524 has a relatively larger diameter, and supports the first door 310 by applying a large load. Thus, when a first hinge axis 524 is disposed closer to the side edge than a second hinge axis 514, a first hinge axis 524 can be broken. However, since the second door 340 does not have a separate storage space and is significantly smaller in thickness and size than the first door 310, a second hinge axis 514 can be arranged closer to the outside than a first axis hinge shaft 524. As a second hinge shaft 514 is arranged closer to the outside than a first hinge shaft 524 and closes to the outer edge of the second door 340, the second door 340 is prevented from interfering with the first door 310 during the rotation of the second door 340. As a result, when the second door 340 is closed, the distance between the first door 310 and the second door 340 can be further reduced. Thus, when viewed from the outside, the first door 310 and the second door 340 can be perceived as a single door, thus improving the sense of unity. A second hinge axis 514 vertically extends 30 downwardly from one end of the second extension 512, and is inserted into a second hinge recess 340a of the second door 340 to function as a center of rotation for the second door 340. A second axis hinge 514 can have a tube shape that is open at the top and bottom sides, and has a cut. Thus, an electrical wire, a ground wire, or a water supply pipe 35, which is guided to the second door 340, can be guided through the interior of the second hinge shaft 514. As a second hinge shaft 514 may have a smaller diameter than that of a first hinge shaft 524, a second hinge recess 340a in which a second hinge shaft 514 is installed has a small diameter. From now on, the opening and closing of the first door and the second door will now be described with reference to the accompanying drawings according to one modality. Fig. 14 is a plan view showing the first and second hinges when the first door is opened. Fig. 15 is a plan view showing the first and second hinges when the second door is opened. Referring to Fig. 13, the first door 310 and the second door 340 are closed. In detail, when the first door 310 and the second door 340 are closed as shown in Fig. 13, the first door 310 completely closes the first refrigerator compartment 104, and the second door 340 completely closes the second storage compartment 405. To open the first door 310, the clamping part 313 is held and pulled forward to rotate the first door 310. At this point, the first door 310 rotates about a first hinge axis 524 of the first hinge 52 as a center of rotation, which is illustrated in Fig. 15. In this state, the refrigerator compartment 104 is opened by the rotation of the first door 310. To open the second door 340, a separate handle provided for the second door 340 can be held, or a confinement of the locking unit provided for the second door 340 is released, and then the second door 340 is held to rotate it. At this point, the second door 340 rotates about a second hinge axis 514 of the second hinge 51 as a center of rotation, which is illustrated in Fig. 14. Thus, the second storage compartment 405 is opened by rotating the second door. 340. At this point, since a second hinge axis 514 that functions as the axis of rotation of the second door 340 is arranged closer to the side surface of the second door 340 than a first hinge axis 524, an interference of the second revolving door 340 with the first port 310 is minimized. Thus, a distance back and forth between the first door 310 and the second door 340 can be reduced in the design. Fig. 16 is a perspective view illustrating a refrigerator when the second door is opened according to an embodiment. With reference to Fig. 16, the refrigerator described above 1 will be described shortly. In detail, the front surface of the second door 340 and the front surfaces of the first door 310 and the door 20 are formed from the same material and have a continuous pattern or pattern. When the second door 340 is closed, the front surface of the second door 340 and the front surface of the refrigerator compartment door 30 arranged on the underside of the second door 340 are arranged in the same plane. The rear surface of the second door 340 can be provided with a protruding part 342a that protrudes internally. The protrusion part 342a consists of a portion of the rear surface of the second door 340, and has a shape corresponding to the opening 316. Thus, when the second door 340 is closed, the protrusion part 342a is arranged inside the opening 316, and fits with opening 316 to primarily prevent a cold air leak. A gasket 344 extends along the edge of the protruding part 342a. A gasket 344 is formed of a material such as rubber or silicone that can be elastically deformed, and is adhered close to the front surface of the first door 310 when the second door 340 is closed. In detail, the gasket 344 is adhered close to the front surface of a second part 321 of the first door 310 corresponding to the inner periphery surface of the opening 316 or the outer edge of the opening 316. At this point, the gasket 344 is compressed to prevent the leakage of cold air from the storage device 40. The upper end of the refrigerator compartment door 30 can be provided with a second door switch 349 that detects the opening and closing of the second door 340. The second door switch 349 can be configured to produce an alarm signal when the second door 340 is opened. The locking unit is provided for the side end of the rear surface of the second door 340 disposed on the side opposite to the side connected to the axis of rotation of the second door 340, and the front surface of the first door 310 corresponding to the opposite side. The locking unit maintains the closed state of the second door 340, and switches a confined state by the pressure operation to selectively confine the second door 340. The locking unit has the same structure as that of typical pressure switching, and may include a locking device 60 installed on the door of the refrigerator compartment 30, and a locking hook 341 provided for the second door 340. In addition, the front surface of the refrigerator compartment door 30 provided with the locking device 60 is provided with a locking notch 317. The locking unit can be a push and pull button on which the locking hook 341 is attached to the locking device 60 by a primary pressure operation and a catch state of the lock hook 341 is released by a secondary pressure operation. Thus, when the second door 340 is closed, the lock hook 341 can be inserted into the lock notch 317, and be coupled to the locking device 60. In this case, when the second open door 340 is closed and pressed, the lock hook lock 341 is inserted into lock notch 317 and attached to locking device 60 to maintain the closing state of second door 340. Then, when the second door 340 is pressed again, locking hook 341 is released from the locking device 60 and removed through the lock notch 317 to allow the opening of the second door 340. A limiting member 350 is disposed on the vertical bottom side of the locking hook 341. The limiting member 350 prevents the locking unit from being unwantedly opened by rotating the first door 310 when the second door 340 is closed. The limiting member 350 is disposed outside the gasket 344 and adhered close to the front surface of the first door 310 outside the opening 316. The limiting member 350 will now be described in more detail with reference to the accompanying drawings. Fig. 17 is a partial perspective view illustrating a second door with a limiting member coupling structure according to an embodiment. With reference to Fig. 17, the limiting member 350 is disposed on the lower portion of the rear surface of the second door 340. The limiting member 350 can be formed of rubber, silicone, or synthetic resin, which can be elastically deformed. The limiting member 350 may include a contact 352 contacting the first port 310, and an installation part 354 attached to the second port 340. Contact 352 can have a cylindrical or hemisphere shape having a predetermined height, and protrudes from the rear surface of the second door 340. A protrusion height of contact 352 can be less than the height of gasket 344 when the external force it is not applied to it. When the second door 340 is closed, the limiting member 350 may contact the first door 310 or be slidably spaced from the first door 310. In the state where the second door 340 is closed, even when a predetermined amount of external force is applied to the limiting member 350, the limiting member 350 maintains the distance between the first door 310 and the second door 340. That is, the external force is prevented from causing the locking hook 341 to press the locking device 60 and release the lock hook 341. Thus, when the second door 340 is closed, the gasket 344 contacts the first door 310 first. When the gasket 344 is compressed to a predetermined degree, the contact end 352 contacts the rear surface of the first door 310. The installation part 354 extends from one side of the contact 352, and can be formed in a hook structure that can be deformed by pressure. The installation part 354 can have a plurality of hook structures, and is pressed into an installation hole 342b provided for the rear surface of the second door 340. Thus, after the second door 340 is assembled, when the installation part 354 is pressed into the installation hole 342b, the limiting member 350 is continuously attached to the rear surface of the second door 340. From now on, the opening and closing of the refrigerator door configured as described above will now be described with reference to the accompanying drawings. Fig. 18 is a partial side view showing a refrigerator with a limiting member when the first and second doors are closed according to an embodiment. Referring to Fig. 18, to store food in the refrigerator compartment 104, the clamping part 313 is held and pulled out. Then, the first door 310 rotates and the refrigerator compartment 104 is opened. At this point, the second door 340 rotates, adhering very close to the first door 310. To store food in the storage device 40, a portion of the front surface of the second door 340 corresponding to the locking unit is pressed and released. Then, the lock hook 341 is released and removed from the lock notch 317, and the second door 340 rotates from the first door 310. At this point, the refrigerator compartment door 30 can still be closed. When the second door 340 is closed, the protrusion part 342a of the second door 340 is disposed within the opening 316 of the refrigerator compartment door 30. A gasket 344 adheres very close to the front surface of the refrigerator compartment door 30 around the opening 316 to seal the internal space of the storage device 40. After the second door 340 is closed, the lock hook 341 is continuously disposed in the lock notch 317. That is, the lock hook 341 is continuously confined by the locking device 60. While the second door 340 is continuously closed by the locking unit, the gasket 344 is maintained in a state of light compression as shown in Fig. 18. The limiting member 350 contacts the front surface of the first door 310, or is spaced a short distance from the front surface of the first door 310. In this state, to open the second door 340, the portion of the second door 340 corresponding to the position where the locking unit is arranged is pressed first. When the second door 340 is pressed, the second door 340 presses on the front surface of the first door 310, and the lock hook 341 is removed from the locking device 60. At this point, the gasket 344 is compressed, and the limiting member 350 it is also slightly compressed, bringing the first door 310 into contact. That is, to remove the coupling state from the locking unit, the second door 340 must be pressed with the predetermined amount of force to compress the limiting member 350. While the second door 340 is closed, when the refrigerator compartment door 30. particularly, the first door 310 is suddenly rotated to open or close, inertia can be applied to the second door 340. For example, when the clamping part 313 is held and the refrigerator compartment door 30 is pulled, the second door 340 presses the front surface of the first door 310 by the inertia applied to the second door 340. That is, since the force is generated along the direction in which a second door 340 presses on the first door 310, the gasket 344 is still compressed. This phenomenon can occur when the first door 310 adhered very close to the cabinet 10 by the magnetic force is pulled to remove the first door 310 from the front surface of a cabinet 10. When the second door 340 rotates along the direction in which a second door 340 presses the front surface of the first door 310, that is, in the opposite direction to the direction of rotation of the first door 310, the limiting member 350 presses the front surface of the first door 310. Thus, the limiting member 350 prevents the rotation of the second door 340 from pressing on the first door 310. When inertia applied to the second port 340 is greater than the force compressing the limiting member 350, the second port 340 can press the first port 310. Thus, the refrigerator 1 can be designed such that inertia applied to the second port 340 by rotation of the refrigerator compartment door 30 is less than the force compressing the limiting member 350. In other words, the refrigerator 1 can be designed such that a limiting member 350 is compressed to remove the coupling state of the locking unit only when the second port 340 is pressed with greater force than inertia. Then, while the first door 310, that is, the refrigerator compartment door 30 rotates, the limiting member 350 prevents the second door 340 from compressing the front surface of the first door 310. The coupling state of the locking unit is maintained to prevent the second door 340 from being inadvertently opened while the first door 310 is opened and to maintain the closing state of the second door 340. A refrigerator according to the present disclosure will be described according to several modalities. From now on, a refrigerator will now be described according to another embodiment. The refrigerator according to the current mode includes an elastic limiting member between the first door and the second door to prevent the second door from being inadvertently opened, and the second door is automatically rotated by the elastic force when the second door is opened. Thus, in the current modality, the rest of the parts for the limiting member are the same as in the previous modalities, a description of it will be omitted, and reference numerals denote equal elements. Fig. 19 is a perspective view showing a refrigerator when the second door is opened according to another embodiment. With reference to Fig. 19, limiting members 356 according to the current mode are configured to prevent the second door 340 from being inadvertently opened and automatically rotate and open the second door 340 when the second door 340 is opened. In detail, the limiting members 356 can be arranged on the front surface of the first door 310 outside the opening 316. The limiting member 356 can be arranged outside the opening 316 on the side opposite the side where the axis of rotation of the second door 340 is willing. That is, the limiting members 356 can be arranged in a vertical line passing through the locking device 60. The limiting members 356 can be formed of an elastic material such as a spring or in a structure that is elastically deformed. The limiting members 356 are compressed when the second door 340 is closed, and the covers of the limiting member 358 are arranged outside the limiting member 356 to cover the limiting member 356 from the outside. The covers of the limiting member 358 can be movable in a back and forth direction from the front surface of the first door 310, so that the covers of the limiting member 358 can be moved together with the limiting members 356 when the limbs of 356 limitation are compressed or extended. The covers of the limiting member 358 can be formed of an elastic material such as rubber or silicone. The limiting member 356 can be provided in a pair respectively at the upper and lower points spaced the same distance from the middle of the second door 340 to prevent the second door 340 from being tilted back and forth when the second door 340 is closed. Alternatively, the limiting members 356 can be arranged on the rear surface of the second door 340 in the same way. Fig. 20 is a schematic view illustrating a limiting member when the first and second doors are opened according to an embodiment. Fig. 21 is a schematic view showing the limiting member of Fig. 20 when the second door is closed. With reference to Figs. 20 and 21, the states of the limiting member 356 will now be described according to the opening and closing of the first door 310 and the second door 340. First, when the second door 340 is opened, external force is not applied to the limiting member 356 in a normal state as illustrated in Fig. 20. As the second door 340 rotates to be closed, the second door 340 comes to closer to the end of the limiting member 356. Before the second port 340 is completely closed, the end of the limiting member 356 contacts the second port 340. To maintain the closing state of the second door 340, the lock hook 341 is inserted into the lock notch 317 and attached to the locking device 60. For this purpose, the second door 340 must also rotate towards the front surface of the first door 310 At this point, the limiting member 356 is compressed by the movement of the second door 340, and simultaneously, the gasket 344 is in contact with the second door 340 and compressed to be adhered very close to the external front surface of the opening 316 of the first door 310 . When the second door 340 is completely closed, the limiting member 356 is compressed and the state of adhesion of the gasket 344 to the opening 316 is maintained, as shown in Fig. 21. When the second door 340 is closed, the locking hook 341 it is continuously attached to the locking device 60 to prevent the second port 340 from being the resilient force of the limiting member 356 and the gasket 344. In this state, when the refrigerator compartment door 30 is suddenly rotated to open the refrigerator compartment, inertia of the second door 340 presses the limiting member 356. Then, the resilient force along a direction in which a second door 340 is pushed is applied to the limiting member 356, and a catch state of the lock hook 341 for the locking device 60 is maintained. That is, a push and pull function is limited. Thus, the inadvertent opening of the second door 340 due to the push and pull operation is prevented although the first door 310 is suddenly rotated. To open the second door 340 which is completely closed as shown in Fig. 21, the portion of the front surface of the second door 340 corresponding to the position of the lock hook 341 is pressed to activate the push and pull operation. Then, the lock hook 341 is released from the locking device 60. At this point, since a limiting member 356 is still compressed, when the force pressing on the front surface of the second port 340 is removed, the resilient force of the limiting member 356 rotates the second door 340 in the open direction. Thus, a user can easily open the second door 340 with little force. Fig. 22 is a perspective view showing a refrigerator according to an embodiment. Fig. 23 is a perspective view illustrating a refrigerator when the second door is opened according to an embodiment. With reference to Figs. 22 and 23, an opening unit 630 as a release member for releasing the locking state of the locking unit is disposed on one side of the second door 340 in a position corresponding to the locking device 60. The opening unit 630 is moved in the back and forth direction by a user operation to remove the coupling of the locking device 60 and the locking hook 341, and is exposed to the front surface of the second door 340. Thus, when the opening unit 630 is operated through from the front surface of the second door 340, the locking device 60 and the locking hook 341 are decoupled from each other to allow opening of the second door 340. The locking unit and the opening unit will now be described in more detail. Fig. 24 is an enlarged perspective view illustrating a locking device and an opening unit according to an embodiment. With reference to Fig. 24, the locking hook 341 that constitutes the locking unit can be fixed by screws to the rear surface of the second door 340. The locking device 60 that constitutes the locking unit can be arranged in a portion of the front surface of the first door 310 corresponding to the lock hook 341. The lock hook 341 is attached to the rear surface of the second door 340, and includes a hook fastening part 341a attached to the screws, and a hook part 341b extending from the rear surfaces of the hook fastening part 341a. The hook part 341b is inserted through the lock notch 317, and is selectively confined by the locking device 60. The locking device 60 includes a locking device 610 installed on a locking device installation part 314a lowered in the first door 310, and a locking device cover 620 covering the locking device 610. The locking device cover 620 covers locking set 610 to protect you. One side of the locking assembly 610 is attached to the interior of the locking device part of the installation 314a, the other side is fixed by a screw to the interior of the locking device part of the installation 314a. A locking rod 615 which is pressed by a clamping rod 633 of the opening unit 630 is installed on a locking assembly 610. Locking rod 615 is elastically supported on locking assembly 610 by an elastic member 617 like a spring. The locking device cover 620 has a plate shape, and has the locking notch 317 which is opened to receive the locking hook 341. A hole in the rod 621 is arranged on one side of the locking device 60 corresponding to the locking rod. lock 615. The stem hole 621 can be arranged in a position corresponding to the clamping rod 633 to allow access of the clamping rod 633. The opening unit 630 can be arranged within the second door 340, and at least a portion of it can be exposed through the front surface of the second door 340 to allow user operation. Opening unit 630 may include an opening unit body 631 which is attached to the interior of the second door 340, an operating button 632 which is movable in the back and forward direction over the opening unit body 631 and pressed by a user, and the clamping rod 633 which is moved in the back and forth direction by an operation of the operation button 632 to clamp the clamping rod 615. The opening unit body 631 can be bolted to a door case 342 that forms the rear surface of the second door 340. A side decoration 346 of the second door 340 provided with the opening unit body 631 can be cut to do not interfere with the opening unit body 631. The rear surface of the opening unit body 631 is attached to the door case 342, and the front surface of the same contacts the rear surface of the door plate 343. The opening unit body 631 may include a stem guide part 635 to guide the back and forth movement of the clamping stem 633. The stem guide part 635 may have a protruding shape that passes through the stem body. opening unit 631. The front portion of the rod guide part 635 protrudes in a protruding shape to be inserted into the operation button 632. Thus, the operation button 632 is allowed to move backwards and forwards along the circumferential surface of the projection, which constitutes a front portion of the rod guide part 635. The clamping rod 633 extends to a predetermined length, and is inserted into the rod guide part 635. The clamping rod 633 may be of a length to protrude back through a hole in the door case 342 when the operation 632 is operated. The front end of the clamping rod 633 can contact the rear surface of the operating button 632. The clamping rod 633 can contact the locking rod 615 while the second door 340 is closed. A support flange projects in the radial direction from the circumferential surface of the clamping rod 633, so that the clamping rod 633 can be supported by an elastic member 634 like a spring. Thus, after the operating button 632 is operated, the clamping rod 633 and the operating button 632 return to their original positions by the resilient force of the elastic member 634. Operator button 632 is placed over stem guide part 635, and can move back and forth along stem guide part 635. Operator button 632 is exposed to the front surface of second door 340 through hole 343a of the port plate 343, and can be pressed by a user. The operating button 632 includes button fixing parts 632a having 10 hook shapes, and the button fixing parts 632a are confined by a fixing ring 636 installed over a hole 313a of the door plate 343, so that the parts button holders 632a are prevented from being removed forward. Fig. 25 is a cross-sectional view taken along line 4-4 'of Fig. 24. Fig. 26 is a cut-away perspective view taken along line 5-5' of Fig. 25 while the second door is closed. Fig. 27 is a cut-away perspective view taken along line 6-6 'of Fig. 25 while the second door is closed. With reference to Figs. 25 to 27, locking device 60 includes locking assembly 610 and locking device cover 620. In detail, the locking set 610 includes a locking set case 611 which is attached to the locking device installation part 314a, a locking meat 612 which is rotatably installed within the locking set case 611 to selectively confine a hook latch 341, a stop 613 that selectively limits the rotation of the latch 612, and the latch rod 615 that pushes the stop 613 back to allow rotation of the latch 612. The front surface of a locking kit case 611 has an opening for receiving locking hook 341. The opening matches the locking notch 317 of the locking device cover 620. A space for storing locking meat 612, the stop 613, and the locking rod 615 are defined in the case of the locking assembly 611. The locking meat 612 is pivotally disposed within the case of the locking assembly 611, and the rotating locking meat 612 can be returned to its original position by a torsion spring 612c (refer to Fig. 28). The locking meat 612 is provided with a hook insertion part 612a that receives and secures the lock hook 341. The insertion hook part 612a is lowered to be selectively coupled to the lock hook 341. Thus, when the second door 340 is closed, the lock hook 341 inserted through the lock notch 317 pushes and rotates the lock meat 612. When the lock meat 612 rotates and the lock hook 341 is attached to the hook insertion part 612a, the latch hook 341 is confined by latch meat 612. A catch part 612b such as a protrusion or a sprung part can be arranged on an external side surface of a latch meat 612. Catch part 612b is illustrated in detail in Fig 28, but the present disclosure is not limited to that. The stop 613 is arranged on the underside of the locking meat 612 to selectively limit the rotation of the locking meat 612. The lower end of the stop 613 can be coupled to the case of the locking assembly 611 using a method such as rotating shaft coupling left and right or back and forth. The upper end of the stop 613 is folded forward to selectively contact the catch part 612b. The upper end of the stop 613 moves along a surface of the catch part 612b when the locking meat 612 rotates. The stop 613 can be connected to one side of the locking kit case 611 through an elastic member 614 (refer to Fig. 27) as a spring, and returns to its original position by the elasticity of the elastic member 614, after move back and forth or left and right. A rod installation part 616 is arranged on the front side of the stop 613, and the lock rod 615 can move back and forth within the rod installation part 616. The rod installation part 616 is open to the front side of the locking kit case 611. In this case, the rod installation part 616 is arranged in a position corresponding to the position of the clamping rod 633. The locking rod 615 can be moved back and forth within the rod installation part 616. The front end of the locking rod 615 is arranged in the bore of the rod 621 provided for a locking device cover 620, and the end rear end comes into contact with stop 613. A stem support 615a can project outwardly from locking stem 615 and interfere with stem installation part 616 to limit forward movement. Since locking rod 615 is supported by elastic member 617 like a spring, when the external force is removed after locking rod 615 moves back, locking rod 615 returns to its original position by the elastic strength of the elastic member 617. Thus, when the rear end of the clamping rod 633 presses the front end of the locking rod 615, and the locking rod 615 moves backwards, the locking rod 615 pushes the stop 613. At this point, the stop 613 is pushed and is removed from the catch part 612b of the locking meat 612. Simultaneously, the locking meat 612 is rotated forward by the resilient force of the torsion spring 612c, and the locking meat 612 and the locking hook 341 are allowed to be removed from each other. Fig. 28 is a rear view illustrating a locking assembly when a stop is pushed by a locking rod, according to an embodiment. Fig. 29 is a rear view illustrating a locking assembly when the second door is closed and a stop is attached to a locking meat, according to an embodiment. Referring to Fig. 28, when the lock rod 615 pushes the stop 613, the folded upper end of the stop 613 is removed from the catch part 612b of the lock meat 612. Then, the lock meat 612 is rotated forward by resilient force of the torsion spring 612c installed on an axis of rotation of the locking meat 612. Thus, the hook part 341b is allowed to be removed from the locking meat 612. The elastic member 614 is connected to the stop 613, and one end of the elastic member 614 is arranged in a laterally spaced position from the other end as shown in Fig. 27. Thus, when the stop 613 is pressed backwards by the locking rod 615, the stop 613 is rotated by the elastic force of the elastic member 614. Thus, as illustrated in Fig. 28, when it is pressed by the locking rod 615, the stop 613 slightly rotates to the left. However, this is only one mode, and thus, the elastic member 614 can be bent back and forth without rotation to the left. Referring to Fig. 29, while the second door 340 is closed, the hook part 341b pushes the latch 612 back. Then, the locking meat 612 rotates backwards, and the outer circumferential surface of the locking meat 612 rotates, contacting the folded upper end of the stop 613. Then, the upper end of the stop 613 is attached to the catch part 612b arranged on the outer circumferential surface of the locking meat 612. Henceforth, the opening and closing of the second door of a refrigerator door configured as described above will now be described in more detail with reference to the accompanying drawings according to an embodiment. Fig. 30 is a schematic view showing a locking device and an opening unit when the second door is closed according to an embodiment. Fig. 31 is a schematic view illustrating the locking device and the opening unit when the opening unit is operated. Fig. 32 is a schematic view illustrating the locking device and the opening unit when the second door is opened. With reference to Figs. 30 to 32, while the second door 340 is closed, the hook part 341b of the latch hook 341 is inserted into the latch notch 317 as shown in Fig. 30. At this point, the hook part 341b is inserted into and secured to the hook insert part 612a provided for a locking meat 612. In addition, the stop 613 is attached to the catching part 612b of the locking meat 612 to stop the rotation of the locking meat 612. In this state, a user operates the opening unit 630 to open the second door 340. In detail, the user presses the operation button 632 to open the second door 340. Then, as shown in Fig. 31, the clamping rod 633 is moved backwards (right side in Fig. 31). Then, the locking rod 615 in contact with the clamping rod 633 is also moved backwards. Then, the lock rod 615 presses the stop 613 backwards, and thus, the upper end of the stop 613 is removed from the catch part 612b. Then, the locking meat 612 is turned forward (counterclockwise in Fig. 31) by the resilient force of the torsion grinder 612c. Simultaneously, the second door 340 is opened by the resilient elastic force of the gasket 344 and the torque of the lock meat 612. Thus, the hook part 341 b of the lock hook 341 is removed from the hook insertion part 612a and removed from the notch. latch 317. As a result, second port 340 is completely released as shown in Fig. 32. While the clamping rod 633 and the locking rod 615 are moved backward by pressing the operating button 632 to open the second door 340, the elastic members 617 and 634 supporting the clamping rod 633 and the locking rod 615 are compressed . Then, when the operating button 632 is released, the resilient force of the elastic members 617 and 634 returns the operating button 632, the clamping rod 633, and the locking rod 615 to their original positions. As illustrated in Fig. 32, when the second door 340 is opened, the locking meat 612 rotates forward, and an entrance of the hook insertion part 612a faces the locking notch 317. At this point, the stop 613 is arranged on the underside of the locking meat 612 and comes in contact with the outer circumferential surface of the locking meat 612. In this state, when the second door 340 is closed again, the hook part 341b of the lock hook 341 is inserted into the lock notch 317, and then is attached to the hook insertion part 612a. At this point, the hook part 341b pushes the rear surface of the hook insertion part 612a, and the locking meat 612 is rotated backwards (clockwise). Then, the torsion spring 612c is compressed, and the locking meat 612 rotates in the state where the outer circumferential surface of the locking meat 612 comes into contact with the upper end of the stop 613. Then, the upper end of the stop 613 is attached to the capture part 612b of lock meat 612 as shown in Fig.30. In summary, a release member for releasing the confined state of the locking unit, particularly a release member for releasing the coupling (or confined state) between a lock hook 341 and the lock meat 612 includes a first member including the operating button 632, clamping rod 633, and elastic member 634, and a second member including locking rod 615 and elastic member 617. A refrigerator according to the present disclosure will be described according to several modalities. From now on, a refrigerator will now be described according to another embodiment. In the refrigerator according to the current mode, an input member that is provided for the second door and can insert an electrical signal is manipulated to operate a trigger provided for a locking device, and the trigger works to release the coupling between a device locking hook and the locking hook, so that the second door can be opened. Thus, in the current mode, the remainder of the parts except for the incoming member and the trigger is the same as in the previous modes, a description of the same will be omitted, and reference numerals denote equal elements. Fig. 33 is a perspective view showing a refrigerator according to an embodiment. Fig. 34 is a perspective view showing the refrigerator of Fig. 33 when the second door is opened. Fig. 35 is a schematic view illustrating a locking unit when the second door of Fig. 34 is closed. Fig. 36 is a schematic view illustrating the locking unit of Fig. 35 when a signal to open the second door is inserted. With reference to Figs. 33 to 36, the second port 340 can be provided with an input member 640 to decouple the locking unit. Input member 640 can convert a user operation to an electrical signal and transmit the electrical signal to a trigger 618 of the locking device 60. The entry member 640 can be arranged on the rear side or the rear surface of the door plate 343 (refer to Fig. 24) which constitutes a front appearance of the second door 340. Thus, the entry member 640 is not exposed directly outside the second door 340. However, to manipulate the entry member 640, a printed portion 641 can be arranged on the door plate 343 in a portion corresponding to the entry member 640 to display the position of the entry member 640 . Input member 640 includes a touch switch that detects a change in electrostatic ability to function, or a pressure switch. However, this disclosure is not limited to switches as the user's operation is detected. Even in this case, the input member 640 can be supplied to the rear surface of the door plate 343. The input member 640 can be supplied in plurality if necessary, and in this case, the input members 640 can be manipulated to control refrigerator 1. The second port 340 can include a monitor 650. The monitor 650 can be arranged on the rear side of the second port 340 to contact the rear surface of the port plate 343. Thus, while a monitor 650 is turned off, the monitor 650 does not it is visible on the port plate 343, and when the monitor 650 is turned on, information can be displayed through the port plate 343. Input member 640 can be integrally formed with the monitor 650. An electrical wire 642 connected to input member 640 and monitor 650 passes through a second port 340, and is guided outward through the hinge axis of the second hinge 51. At this point, when a ground wire is disposed within the second port 340, electrical wire 642 along with ground wire can be guided out through the hinge axis of the second hinge 51. An electrical wire 619 and electrical wire 642 can be connected to a main controller (not shown) provided for the cabinet 10 through the first hinge 52. The locking device 60 can include the locking set 610 which is installed inside the first door 310, and the locking device cover 620 which protects the locking set 610. The locking set 610 includes the locking set case 611, the locking meat 612 which is installed inside the locking kit case 611 to confine the locking hook 341, the stop 613 which selectively limits the rotation of the locking meat 612, and the driver 618 which moves the stop 613 to allow rotation of the locking meat 612. The configuration of the locking device 60 except for the driver 618 is the same as that of the previous mode. The driver 618 may include a solenoid. When an operation signal is inserted for the driver 618, the driver 618 pushes the stop 613 to release the locking meat 612. The operation signal is transmitted to the driver 618 by manipulating the input member 640, and the driver 618 momentarily pushes stop 613, and then returns to its original position. Alternatively, the driver 618 can include another power member or mechanism, and can selectively push the stop 613 to release the lock meat 612. Electric wire 619 connected to driver 618 passes through the first port 310, and is guided out of the first port 310 through the hinge axis of the first hinge 52. Electric wire 619 guided out of the first port 310, and the electric wire 642 guided out through the second hinge 51 can be connected to the main controller of cabinet 10. Also at this point, when a ground wire is laid inside the first port 310, electrical wire 619 together with the ground wire can be guided to cabinet 10 Thus, when input member 640 is manipulated, an operating signal is transmitted to driver 618 to release the locking unit. In detail, when the second door 340 is completely closed, the lock hook 341 is attached to the hook insertion part 612a of the lock meat 612 as illustrated in Fig. 35. Thus, the second door 340 is kept in the closed state . In this state, a user touches the printed part 641 to open the second door 340 as shown in Fig. 36. Then, the input member 640 senses the touch and transmits an operation signal to the main controller, and the main controller commands the actuator 618 to function. At this point, the driver 618 pushes the stop 613, and the stop 613 is removed from the lock meat 612, and the lock meat 612 rotates counterclockwise (in Fig. 36) by the resilient force of the stop 613. When the latch meat 612 rotates, latch hook 341 and latch meat 612 are released from each other, and latch hook 341 is removed out through latch notch 317. In this state, second door 340 can rotate freely . When the second open door 340 is closed, the lock hook 341 is inserted into the lock notch 317 to rotate the lock meat 612, and is attached to the hook insertion part 612a to maintain the closed state, as shown in Fig 35. In the current embodiment, a release member may include a first member that includes input member 640 provided for the first port 310, and driver 618 provided for the second port 340. Fig. 37 is a perspective view showing a refrigerator when the second door is opened according to an embodiment. With reference to Fig. 37, as described above, the rear surface of the second port 340 can be provided with the protruding part 342a. The protruding part 342a includes the part skipped in the lower part, and a shelf 370 to be described later is vertically stored in the part skipped. Thus, the depth of the protruding part may correspond to the thickness of the 370 shelf. In detail, the shelf 370 which can be swiveled forward is arranged on one side of the first door 310, and a connection assembly 390 that connects the shelf 370 to the second door 340 is arranged on one side of the second door 340. Thus, the rotation the shelf 370 is connected with the opening and closing of the second door 340. The shelf 370 is coupled to the inner edge of the opening 316 such that a shelf 370 can rotate up and down. The axes of rotation of the shelf 317 are arranged on the left and right sides of the shelf 370, and are inserted on both side edges of the opening 316 at the lower end of the opening 316. Alternatively, the axis of rotation of the shelf 317 can project from from the inner edge of opening 316 and are inserted at the side edges of shelf 370. The shelf 370 can have a width corresponding to the lateral width of the opening 316, so that a shelf 370 can be stored in the opening 316. The width of the shelf 370 can match the width of the protruding part 342a, so that a shelf 370 can be stored in the protrusion part 342a when the second door 340 is closed, as illustrated in Fig. 37. An installation part connection set 342d is arranged on the underside of the rear surface of the second door 340. The connection part installation part 342d can be arranged on the protrusion part 342a of the second door 340, and is lowered to receive an end connection set 390. Henceforth, shelf 370 will now be described in more detail with reference to the accompanying drawings. Fig. 38 is a schematic view showing the shelf in Fig. 37 rotated by opening the second door. Fig. 39 is a schematic view showing the rear surface of the first door in Fig. 37 when the second door in Fig. 38 is closed. Fig. 40 is a schematic view illustrating a joint member coupled to the connection set, according to an embodiment. With reference to Figs. 38 to 40, the bottom surface of the shelf 370 can be provided with a gasket member 380 which is coupled with the connection assembly 390. The gasket member 380 can include a gasket coupling part 381 which is coupled with the shelf 370 , and a joint receiving portion 382 on which one end of the connection assembly 390 is pivotally arranged. In detail, the gasket coupling part 381 has a plate shape, and screw holes 381a are arranged respectively on both sides of the gasket coupling part 381 such that the gasket coupling part 381 is coupled with the shelf 370 Thus, the joint member 380 is installed on a shelf 370 by the screws coupled to the screw holes 381a. The joint receiving part 382 receives a ball-shaped bearing 391a that forms the connection assembly 390, so that a bearing 391a is surrounded by the joint receiving part 382. The joint coupling part 381 that constitutes the surface bottom of joint receiving part 382 is opened to receive bearing 391a. One side of the joint receiving part 382 is provided with a cut part 382a which is cut to define a rotation path of the joint stem 391. The shape of the cut part 382a defines a portion of the joint rod 391 movement path, and the cut part 382a prevents a bearing 391a from being removed from the joint receiving part 382. A guide part 382b protrudes from a side of the cut part 382a, When the shelf 370 is completely folded and completely unfolded, the bearing 391a is arranged in the recesses at both ends of the cut part 382a. One side of the shelf 370 can be provided with a containment member 372 (referring to Fig. 38) that abuts the connection set 390. The containment member 372 is arranged on the bottom surface of the shelf 370, and the set of connection 390 passes through containment member 372. Thus, connection assembly 390 is prevented from moving along an unintended path when shelf 370 rotates. Fig. 41 is an enlarged perspective view illustrating a connection set according to an embodiment, (a), (b) and (c) in Fig. 42 are schematic views illustrating an operation of the connection set. With reference to Figs. 41, 42, connection set 390 includes joint stem 391 connected to joint member 380, a damping unit 394 that adjusts the length of joint stem 391 and absorbs shock during the movement of joint stem 391, a installation member 398 installed on a connection assembly installation part 342d of the second port 340, a connection member 395 pivotally coupled to the installation member 398, and a connecting rod 392 connecting the joint stem 391 to the connecting member 395 . In detail, one end of the joint stem 391 is provided with the ball-shaped bearing 391 which is pivotally coupled to the joint member 380. The other end of the joint stem 391 is inserted into the connecting rod 392. The stem of the joint gasket 391 goes in and out of the connecting rod 392 according to the movement paths of the connecting assembly 390 during the rotation of the shelf 370. Connecting rod 392 receives a joint rod end 391, and can be axially coupled to connecting member 395. In detail, a hollow part having a predetermined length from one end of connecting rod 392 is formed on the rod connecting rod 392 to receive the joint rod 391 and the damping unit 394. The end of the connecting rod 392 is provided with a rod cap 393 into which the joint rod 391 is inserted. The stem cap 393 can be coupled to the end of the connecting stem 392. Both ends of the stem cap 393 can be opened to receive the stem from the gasket 391 and at least a portion of the damping unit 394. The other end of the stem connector 392 is provided with a stem connection delivery 392a. The connecting part of the stem 392a can be arranged within the connecting member 395, and the connecting part of the stem 392a is pivotally connected to one end of the connecting member 395 through an axis of the stem 397a. Thus, the connecting rod 392 can rotate about the axis of the rod 397a. The other end of the connecting member 395 is pivotally connected to the installation member 398 via a rotation axis 396a. The center of rotation of the connecting rod 392 is perpendicular to the center of rotation of the connecting member 395. That is, the axis of rotation 396a is vertically inserted into the installation member 398, and the axis of the stem 397a is horizontally connected to the member of connection 395. An end 392b of the connecting part of the stem 392a has a curved surface with a predetermined curvature as illustrated in (b) of Fig. 42. Thus, while the connecting rod 392 rotates according to the rotation of the second port 340, even when the user's hand comes into contact with the connecting rod 392, the hand is not attached to the connecting rod 392 and slides along the curved surface, thus preventing an accident. The damping unit 394 is arranged on the connecting rod 392 and supports one end of the joint rod 391 to absorb the shock caused by the movement of the joint rod 391. The damping unit 394 includes a spring 394a that supports the rod end of the joint. gasket 391, a stop 394b that slides inside the connecting rod 392 and supports a spring 394a, an O ring 394c installed on a stop 394b and in contact with the inner surface of the connecting rod 392 to provide friction force, a washer 394d installed on a stop 394b to prevent the removal of the O ring 394c, and a snap ring 394e that secures the washer 394d and prevents movement of the stop 394b. When the shelf 370 rotates, since the joint rod 391 goes in or out of the connecting rod 392 through the damping unit 394, the shelf 370 can efficiently rotate. When the joint rod 391 goes in and out of the connecting rod 392, the spring 394a is extended or compressed. In this way, the stop 394b moves to absorb the shock transmitted from the joint rod 391 to slow down the joint rod 391. Since the joint rod 391 is decelerated, a rapid rotation of the shelf 370 can be prevented. In the current mode, the damping unit 394 is provided only for one end of the connecting rod 392, but the damping unit 394 can be provided at both ends of the connecting rod 392, so that the connecting rod 392 can experiment travel variations at both ends of the 392 connecting rod. Installation member 398 is inserted into connection assembly installation part 342d, and may include a cup 398a that defines a receiving space for connection member 395, and a flange 398b arranged around cup 398a and coupled to the second port 340 through the screws. In detail, connection member 395 most efficiently rotates connection assembly 390, and is pivotally connected to installation member 398 through axis of rotation 396a. The connecting member 395 includes an axis coupling part 396 through which the axis of rotation 396a passes, and a receiving rib 397 that receives the connecting part of the stem 392a. The shaft coupling part 396 has a shaft insertion hole 396b that is vertically opened. The axis of rotation 396a passes through the cup 398a, and is installed in the shaft insertion hole 396b. Thus, the axis of rotation 396a functions as the center of rotation of the connecting member 395. The connecting rod 392 is arranged within the receiving rib 397 which can be arranged on both sides of the connecting rod 392 to move the connecting rod. connection 392 up and down. The shaft of the rod 397a passes through the receiving strip 397 and the connecting portion of the rod 392a to rotate the connecting rod 392. Thus, the connecting rod 392 can rotate up and down and right and left through the connecting member 395, and the connecting rod 392 rotates freely during the opening and closing of the second door 340, so that a shelf 370 it can be smoothly folded or unfolded. A lower hinge assembly provided for the second door will now be described. Fig. 43 is an enlarged perspective view illustrating an installation structure for the second door. Fig. 44 is a schematic view illustrating a lower hinge assembly when the second door is closed. Fig. 45 is a schematic view illustrating the lower hinge assembly when the second door is opened. With reference to Figs. 43 to 45, the lower end of the second door 340 is supported by a hinge support 53. Hinge support 53 is provided for the front surface of the first door 310 to support the second door 340 from the bottom side, and is coupled to a lower hinge assembly 54 provided for the second door 340. The lower hinge assembly 54 and the hinge support 53 can be formed of conductive metal. When the second door 340 is opened, the lower hinge assembly 54 automatically opens a second door 340 through a predetermined angle, and then prevents the second door 340 from further rotation. In detail, the lower hinge assembly 54 includes the hinge attachment part 55 attached to the hinge bracket 53, and the hinge rotation part 56 attached within the second door 340 and in contact with the hinge attachment part 55. The hinge rotation part 56 rotates together with the second door 340, and moves up and down along an upper surface of the hinge attachment part 55. The hinge fixing part 55 can include an insertion protrusion 551 which is inserted and fixed to the hinge support 53, and a lower cam 552 disposed above the insertion protrusion 551. In detail, since the hinge fixation part 55 is attached to the hinge support 53, the hinge fixing part 55 is not affected by the rotation of the second door 340. In detail, the upper surface of the lower meat 552 includes a first meat surface 552a which is angled downwards, and a second meat surface 552b which is angled upwards from the lower end of the first meat surface 552a. The first meat surface 552a can be continuously connected to the second meat surface 552b to form a structure that can be supplied continuously in duplicate along the edge of the upper surface of the lower meat 552. A securing protrusion 561 can be arranged around the side surface of the hinge rotation part 56. The hinge receiving part 340a is arranged within the second door 340, and the hinge rotation part 56 is installed in the receiving part. hinge 340a. A protrusion receiving recess 340b is recessed around the inner surface of the hinge receiving portion 340a, and the securing protrusion 561 is arranged in the protrusion receiving recess 340b. Thus, the hinge rotation part 56 rotates integrally with the second door 340. An upper cam 562 is provided for a lower surface of the hinge rotation part 56. The upper cam 562 is provided with a third cam surface 562a which is sloping downwards, and a fourth cam surface 562b which is sloped upwards from the lower end of the third cam surface 562a. The third meat surface 562a can be continuously connected to the fourth meat surface 562b to form a structure that can be supplied continuously in duplicate along the edge of the upper surface of the lower meat 562. The third and fourth meat surfaces 562a and 562b lay contact the first and second surfaces 552a and 552b in corresponding formats, respectively. The upper surface of the hinge rotation part 56 can be supported by an elastic member 563 as a spring arranged within the hinge receiving part 340a. Thus, the lower surface of the hinge rotation part 56 continuously contacts the upper surface of the hinge fixing part 55, and the first and second cam surfaces 552a and 552b of the hinge fixing part 55 and the third hinge surface. meat 562a and 562b of the hinge rotation part 56 relatively moves in contact with each other, according to the rotation of the second door 340. For example, when the second door 340 is closed, the first meat surface 552a comes into contact with the third meat surface 562a as illustrated in Fig. 44. Since the first meat surface 552a and the third meat surface 562a are tilted downwards, when the second door 340 is released, the third meat surface 562a slides down along the first meat surface 552a by the weight of the second door 340. Thus, the second door 340 is automatically rotated without applying torque to the second port 340. When the second door 340 is rotated by a predetermined angle to open the second door 340, the first meat surface 552a does not come into contact with the third meat surface 562a anymore, and the second meat surface 552b comes into contact with the fourth meat surface 562b. As illustrated in Fig. 45, since the second meat surface 552b and the fourth meat surface 562b are angled upwards in the opening direction, a rotation speed of the second door 340 is gradually decreased. When the second door 340 rotates through a predetermined angle, for example, around 110 °, the second meat surface 552b completely contacts the fourth meat surface 562b as illustrated in Fig. 45. Furthermore, since an elastic member 563 is sufficiently compressed, the hinge rotation part 56 cannot move upwards ever again. In this state, the rotation of the second door 340 is stopped or limited. An angle that limits the opening of the second door 340 can be determined by the curvature of the second meat surface 552b and the fourth meat surface 562b and the elasticity of the elastic member 563, and the second door 340 can be designed to be opened up to about 110 °, considering the unfolding of the shelf 370 connected with the rotation of the second door 340. Hereinafter, an operation of the second door of a refrigerator will now be described according to an embodiment. When the second door 340 is closed, the shelf 370 is folded to remain vertically and is adhered very close to the protrusion part 342a. After shelf 370 is folded, connection set 390 is also adhered very close to shelf 370. In this state, when the lock hook 341 is released to open the second door 340, the lower hinge assembly 54 operates simultaneously with the release of the lock hook 341, so that the second door 340 automatically rotates. At this point, shelf 370 connected via connection assembly 390 rotates down and unfolds until shelf 370 is positioned horizontally. The connection assembly 390 rotates according to the rotation of the shelf 370. The shelf 370 is slowly moved downwards by the damping unit 394. The second door 340 is automatically opened by the lower hinge assembly 54 to a predetermined angle, and is stopped when the shelf 370 is positioned horizontally. At this point, the second door 340 is arranged at about 110 °, and the second door 340 is gradually decelerated by the lower hinge assembly 54 and stopped just before the shelf 370 is completely unfolded to be positioned horizontally. When shelf 370 is fully unfolded, connection assembly 390 is also positioned horizontally to support a shelf 370. At this point, the bottom surface of shelf 370 is supported by the lower end of opening 316, so that a shelf 370 is held in place a stable state. After the shelf 370 is fully unfolded, the joint rod 391 of the connection assembly 390 is continuously arranged at the end of the cut portion 382a of the joint member 380. The lower hinge assembly 54 prevents the second door 340 from being opened further, and thus, shelf 370 is maintained in an additional stable state. Fig. 46 is a perspective view illustrating a second door. Fig. 47 is an enlarged perspective view showing the front side of the second door. Fig. 48 is an enlarged perspective view showing the rear side of the second door. Fig. 49 is a cross-sectional view taken along line 7-7 'of Fig. 46. Fig. 50 is a cross-sectional view taken along line 8-8' of Fig. 46. Fig. 51 is a perspective view illustrating a second door when only the door plate is removed from the second door. With reference to Figs. 46 to 51, the second door 340 includes the door plate 343 that defines the front exterior of the second door 340, the case of door 342 that defines a rear exterior of the second door 340, cover decorations 345 that define the upper and lower surfaces of the second door 340, and the side decorations 346 that define the right and left surfaces of the second door 340. In detail, the size of the front surface of the second door 340 is determined according to the door plate 343. As described above, the door plate 343, the front surface of the first door 310 and the front surface of a freezer compartment door 20 can have the same material or the same color or the same figure. The door plate 343 can be formed of tempered glass, and the rear surface of the door plate 343 can be provided with a specific pattern or figure. Since the door plate 343 is formed of tempered glass that is transparent, the pattern or figure can be seen from the front side of the door plate 343. The door plate 343 can be adhered to the front surfaces of the cover decorations 345 and the front of the side decoration surfaces 346 through the adhesive members 343b (refer to Fig. 51). A pattern or figure can be formed on the rear surface of the door plate 343 using a method below. In detail, a pattern or figure is printed in a specific format on the opaque film of the front surface that has the same color as that of the front surface of the first door 310. The film with the printed pattern or figure is attached to the back surface of the plate of the door 343. Since the film is opaque, a heat insulator that fills the rear surface of the door plate 343 is not exposed to the outside. In the related technique, a refrigerator door is formed by attaching a separate tempered glass to the front surface of the door cover which is a plastic product through injection molding or a metal plate. However, according to the embodiment, a separate door cover is unnecessary, and the door plate 343 formed of glass performs both functions. That is, the door plate 343 functions both as a cover door and the tempered glass attached to the front surface of the door cover. The case of door 342, which defines the rear surface of the second door 5 340, can be plastic by injection molding. The port case 342 can be lowered to receive a heat insulator. In detail, the protruding part 342a may have a shape corresponding to opening 316, and is arranged within opening 316 when the second door 340 is closed. The port case 342 can have a gasket recess for receiving the gasket 344, and a gasket recess is disposed outside the protruding part 342a. The gasket 344 extends along the edge of the door case 342 and contacts the outside of the opening 316. The lock hook 341 can be installed over a door case 342, and the upper and lower ends of the door case 342 can be provided respectively with spaces in which the first hinge 52 and the lower hinge assembly 54 are installed. The interior and edge surface of the door case 342 can be provided with a plurality of protrusions or ribs to reinforce the door case 342. Reinforcement members 340c to reinforce the second door 340 can be installed on the right and left edges of the door case 342. Reinforcement members 340c can be formed of steel, and be stretched up and down. Reinforcement members 340c installed on a case of port 342 prevent the second door 340 from twisting or deformation. Reinforcement members 340c will be described in more detail later. The decorations of the lid 345 define the upper and lower appearances of the second door 340, and can be formed of plastic through injection molding. The lid decorations 345 include an upper lid decoration that defines an upper surface of the second door 340, and a lower lid decoration that defines a lower surface of the second door 30 340. One side of the top cover decoration of the cover decorations 345 can be provided with the second installation part 340b on which the second hinge 51 is installed, and one side of the bottom cover decoration of the cover decorations 345 can be provided with a third part of installation 345f on which the lower hinge assembly 54 is installed. The bottom lid decoration of the lid decorations 345 can be provided with a handle part 345g that is lowered to be held by a user hand to open the second door 340. The cover 345 decorations can be attached to the door case 342 using screws 345h. For this purpose, the cover decorations 345 can have screw holes 345i through which screws 345h pass, and screw coupling part 342e to which screws 345h are attached can be arranged in the door case 342 to match the holes of 345i screw. The cover 345 decorations may include the door case coupling part 345a installed on the upper and lower ends of the door case 342, and door plate placement parts 345b that support the lower and upper surfaces of the door plate 343. The coupling part of the door case 345a can be coupled to the upper and lower ends of the door case 342. The placement parts of the door plate 345b extend perpendicularly to the coupling part of the case of the door 345a inwards of the door case 342. Thus, the door plate 343 can be coupled to the coupling part of the door case 345a in a way where the door plate 343 is placed on the coupling part of the door case 345a. From now on, the cover decorations will now be arranged in 20 more details. In the installation structures of the cover decorations, the decoration of the upper cover is the same as the decoration of the lower cover, and thus, a description will now be made with respect to decoration of the upper cover. The coupling part door case 345a extends to the door case 342 and can be inserted into an upper edge 342f which is provided for the upper end of the door case 342. The upper edge 342f can have an insert recess 342g into which the door case of the coupling part 345a is inserted. The case of the coupling part door 345a has a protruding shape, and its rear portion is inserted into the recess 342g and its coplanar portion is coplanar with the upper edge 342f to define the upper surface of the second door 340. The placement plate door 345b can extend into the door case 342 and be adhered close to the rear surface of the door plate 343. Movement prevention protrusions 345c project forward from the outer ends of the parts for placing the door plate 345b. The movement prevention protrusions 345c extend in the longitudinal direction of the coupling part of the door case 345a to support and confine the upper and lower ends of the door plate 343. The side decorations 346 form the right and left surfaces of the second door 340, and can be formed of metal like aluminum. The side decorations 346 are installed on the side ends of the door case 342, and can be attached to the door case 342 using screws 346e. The side decorations 346 can be formed of plastic through injection molding, and can be coated or colored to have a metal texture. The side decorations 346 may include the door case coupling part 346a coupled to both side surfaces of the door case 342, and the door plate placement parts 346b that extend perpendicularly to the door case coupling part 346a to support the door plate 343. The door plate placement parts 346b extend towards the interior of the door case 342, and the rear surface of the door plate 343 is placed over the door plate placement parts 346b. Hereafter, the side decorations will now be described in more detail. The coupling part of the port case 346a extends backwards, and hooks 346c can be folded at the rear ends of the coupling part of the port case 346a. The hooks 346c of the coupling part of the door case 346a mate with the coupling recesses of the side decoration 342i arranged on the left and right ends of the door case 342. The edges 342h arranged on the left and right side ends of the door case 342 come into contact with the coupling part of the door case 346a to laterally support the side decorations 346. The door plate placement parts 346b extend towards the interior of the door case 342, and extended ends are folded back to prevent deformation of the side decorations 346. The motion prevention protrusions 346d project forward from the outer ends of the door plate 346b placement parts. The movement prevention protrusions 346d extend in the longitudinal direction of the coupling part of the door case 346a to prevent left and right movement of the door plate 343. Thus, in the second door 340 as shown in Fig. 51, the decorations of the lid 345 are respectively coupled to the upper and lower ends of the door case 342, and the side decorations 346 are respectively attached to the left and right ends of the door case. 342, and the door plate 343 is placed over the door plate placement parts 345b and 346b. Adhesive members 343b can be provided respectively for the parts for placing the door plate 345b and 346b in contact with the door plate 343. The adhesive members 343b can include double-sided adhesive tape or adhesive. Alternatively, the adhesive members 343b can be applied to the rear surface of the door plate 343. When the door plate 343 is adhered to the door plate placement parts 345b and 346b, a foaming agent can be filled between the door plate 343 and the door case 342 to form an insulating layer. Henceforth, the reinforcement members installed inside the door case will now be described in more detail. Fig. 52 is an enlarged perspective view showing a second door coupled to the reinforcement members according to an embodiment. Fig. 53 is a cross-sectional view taken along line 9-9 'in Fig. 52. With reference to Figs. 52 and 53, reinforcement members 340c can be installed on the right and left sides of the door case 342. Reinforcement members 340c can be placed on the front surface of a door case 342 on the edge of the door case 342, and can be arranged behind the door plate mounting parts 346b of the side decorations 346. The front and rear ends of the reinforcement member 340c extend towards the interior of the door case 342, and are spaced at a predetermined distance from each other. Thus, the open parts of the reinforcement members 340c can face the interior of the door case 342, and an insulator can be uniformly injected into the reinforcement members 340c. In addition, the door plate placement parts 346b are spaced from the reinforcement members 340c, so that a foaming agent can be uniformly injected into the spaces between a reinforcement member 340c and the door case 342. The reinforcement members 340c are arranged more outwardly than the portions provided with screws 346e for coupling side decorations 346, so that reinforcement members 340c do not interfere with screws 346e during coupling of screws 346e. Reinforcement members 340c are spaced internally from the side ends of the door case 342, and are spaced from the coupling recesses of the side decoration 342i. Reinforcement member 340c can be provided in quadruplicate around the door case 342 as well as the right and left sides of the door case 342, or can be arranged diagonally. Reinforcement members 340c can be adhered to the front surfaces of a port case 342 using an adhesive. For example, a primer 340d is applied to the bottom surface of reinforcement member 340c, and then the double-sided adhesive tape 340e is attached to the bottom surface. A 340f primer is applied to the upper surface of the 342 door case. That is, primers 340d and 340f are attached to the upper and lower surfaces (or front and rear surfaces) of the double-sided adhesive tape 340e. Henceforth, the assembly of the second door of a refrigerator configured as described above will now be described according to one embodiment. To assemble the second door 340, a color or figure is formed on the back surface of the door plate 343. The door case 342 and the cover decorations 345 are formed of plastic through injection molding, and the side decorations 346 are formed of metal like aluminum. Reinforcement members 340c are formed to have a predetermined length. In detail, reinforcement members 340c are installed on the right and left inner sides of the door case 342. For this purpose, primers 340d and 340f are applied to the reinforcement member 340c and the door case 342, and the reinforcement 340c are fixed to the inner surface of the door case 342 using double-sided adhesive tape 340e. The cover decorations 345 are attached to the upper and lower ends of the door case 342. Thereafter, the side decorations 346 are attached to the left and right ends of the door case 342. In detail, the coupling parts of the door case 345a are respectively inserted in the upper edge 342f and and the lower edge of the door case 342, and the screws 345h are coupled to fix the decorations of the cover 345 to the door case 342. The hooks 346c of the coupling part of the door case 346a are coupled to the coupling recesses of the side decoration 342i, and then the screws 346e are coupled to secure the side decorations 346 to the door case 342. After the cover decorations 345 and the side decorations 346 are attached to the door case 342, the adhesive members 343b are applied to the door plate placement parts 345b and 346b. Then, the door plate 343 is placed over the door plate placement parts 345b and 346b. Then, the door plate 343 is attached to the door plate placement parts 345b and 346b through the adhesive members 343b. The motion prevention protrusions 345c provided for cover decorations 345 and the motion prevention protrusions 346d 5 provided for side decorations 346 support and confine the edge of the door plate 343 to prevent movement of the door plate 343. After the door plate 343 is installed, a defoaming agent is injected between the door plate 343 and the door case 342 to form an insulating layer inside the second door 340. When the injection of the defoaming agent 10 is complete, the assembly of the second door 340 is completed. Various structures including the gasket 344 to be installed on a door case 342, the locking hook 341, and the lower hinge assembly 54 can be fixed just after the door plate 343 is formed, or after or before the defoaming agent be injected. Fig. 54 is an enlarged perspective view showing the front side of the second door. Fig. 55 is an enlarged perspective view showing the rear side of the second door. Fig. 56 is a perspective view showing a second door installed on a jig. With reference to Figs. 54 to 56, as described above, the second door 20 340 can include the door plate 343 that forms the front exterior of the second door 340, the case of door 342 that forms the rear exterior of the second door 340, the decorations of the lid 345 that form the upper and lower surfaces of the second door 340, and the side decoration 346 that forms the right and left surfaces of the second door 340. In detail, an injection part of the foaming agent 342j is arranged in a portion of the protrusion part 342a provided for a port case 342. An opening 342k can be arranged approximately in the center of the injection part of the foaming agent 342j. The opening 342k is a hole through which a defoaming agent 84 is injected to form the insulation layer 30 within the second port 340. The foaming agent part 342j can be arranged in an upwardly spaced position from the lower end of the protrusion part 342a. In detail, the injection part of the foaming agent 342j can be arranged in a position corresponding to about a quarter to about 35 of a third the length of the second door 340 from the lower end of the second door 340. Thus, the opening 342k is arranged in a downwardly spaced position from a horizontal cross section that forks the second door 340. When the foaming agent 84 is injected into the second port 340, the lower end of the second port 340 is moved upward to be tilted 5 at an angle ranging from about 4 ° to about 6 °. Thus, during a defoaming process, the opening 342k is arranged higher than the horizontal cross section that forks the second door 340. In this way, the defoaming agent 84 can be uniformly introduced into a second door 340. In detail, the second door 340 is thinner than a typical refrigerator door, and the length and side width of the second door 340 are large in relation to the thickness of the second door 340. Thus, when a typical method is used to injecting a defoaming agent into the second port 340, since an internal space of the second port 340 is thin and wide, the defoaming agent 84 may spread non-uniformly. However, when the second door 340 is tilted and the foaming agent 84 is injected through the opening 342k, the foaming agent 84 can be introduced downwards to the upper end of the second door 340 along an inclined surface in the second door. 340, and simultaneously, the defoaming agent 84 can be uniformly introduced 20 to other regions in the second port 340. For this purpose, the second door 340 can be installed on a jig 80 which is inclined at an angle ranging from about 4 ° to about 6 ° from the ground. Alternatively, the jig 80 on which the second door 340 is installed is arranged horizontally, and the internal space of the jig 80 can be tilted. When the angle of inclination of the second port 340 is less than about 4 °, it can be difficult to inject defoaming agent 84 into the upper end of the second port 340. When the angle of inclination of the second port 340 is greater than about 6 °, it may be difficult to inject the defoaming agent 84 upwards to the end of the second port 340 spaced 30 upwards from the horizontal cross section, i.e. upwards to the bottom end of the second port 340. In addition , it can be difficult to move and assemble the 80 gig. When jig 80 is tilted in the range of about 4 ° to about 6 °, if the opening 342k is higher, a foaming agent is hardened before reaching the upper end of the second door 340, like a layer of Isolation may not be formed in a predetermined region. If the opening 342k is arranged lower, the foaming agent 84 does not reach the lower end of the second door 340, that is, the uppermost end inside the giga 80, so that an insulating layer may not be formed in one region predetermined. The foaming agent injection part 342j having the opening 342k can be provided with a cover of the injection part 342I covering the injection part of the foaming agent 342j. The injection part of the foaming agent 342j is provided with cover part of the coupling 342m to install the cover of the injection part 342I to the injection part of the defoaming agent 342j. The cover of the injection part 342I installed over the injection part of the defoaming agent 342j can be coplanar with the outer surface of the protrusion part 342a. Henceforth, the assembly of the second door of a refrigerator configured as described above will now be described according to one embodiment. To mount the second door 340, the door plate 343 is formed, and then a film having a pattern or figure and a background color that is the same as that of the front of the first door 310 is fixed to the rear surface of the door plate 343. The door case 342 and the cover decorations 345 are formed of plastic through injection molding, and the side decorations 346 are formed of metal like aluminum. After the door case 342, the cover decorations 345, and the side decorations 346 are formed, the upper and lower ends of the door case 342 formed through injection molding are coupled to the cover decorations 345 formed through injection molding. . Thereafter, the side decorations 346 are attached to the left and right ends of the door case 342. After the cover decorations 345 and the side decorations 346 are attached to the door case 342, the door plate 343 is installed over the cover decorations 345 and the side decorations 346. The adhesive can be applied over the cover decorations 345 and the side decorations 346 or the door plate 343. The door plate 343 is attached to the decorations of the cover 345 and the side decorations 346 through the adhesive to form a front exterior of the second door 340. The decorations of the cover 345 and the side decorations 346 are provided with discrete fixing structures as a capture protrusion to prevent movement of the door plate 343. After the port 343 plate is installed, the second port 340 is installed over the port 80. The port 80 is a part for securing the second port 340 when the foaming agent 84 is injected, and includes an upper port 81 and a port bottom 82. The door plate 343 and the door case 342 are placed over the upper jig 81 and the lower jig 82, respectively. The jig 80 may have a shape corresponding to the exterior of the second door 340, and be inclined at a predetermined angle from the ground. Thus, the second door 340 is inclined when it is installed on the giga 80. After the second door 340 is installed to be tilted into the giga 80, the giga 80 is closed. The foaming agent 84 is injected into the opening 342k through an injection nozzle 83 provided to one side of the jig 80. At this point, as illustrated in Fig. 58, the foaming agent 84 flows down along the sloped surface of the door plate 343. Then, the second door 340 is filled with the foaming agent 84 from the lowest region. At this point, the foaming agent 84 is supplied upwards to a region higher than the opening 342k by the pressure of the foaming agent 84 injected through the opening 342k. As an adjustment time elapses, the interior of the second door 340 is entirely and uniformly filled with the defoaming agent 84 to form an insulating layer. Various structures including the gasket 344 to be installed on a door case 342, the locking hook 341, and the lower hinge assembly 54 can be fixed just after the door plate 343 is formed, or after or before the defoaming agent 84 be injected. An injection status of the defoaming agent 84 can be varied according to the inclination angles of the second port 340, which will now be described with reference to the accompanying drawings. Figs. 57 to 61 are graphs that illustrate filling states of a defoaming agent according to giga angles. With reference to Figs. 57 to 61, a simulation is performed when the opening has an injection diameter of 18 mm, a total amount of the defoaming agent to be injected is 1100 g, an injection speed of the defoaming agent is 0.7856 m / sec, a defoaming agent discharge amount per second is 280 g / sec, and a defoaming agent discharge time is 3.93 sec. Under these conditions, the angle of the second door 340 is varied. With reference to Figs. 57 to 61, when the second door 340 is not angled and disposed horizontally, the foaming agent 84 spreads with substantially the same radius around the opening 342k as illustrated in Fig. 57. However, in this case, since the opening 342k is disposed in the lower portion of the second door 340, the defoaming agent 84 is insufficiently supplied to the upper end of the second door 340, and is distributed non-uniformly across a wide region. In other words, the foaming agent 84 can be collected only for the region adjacent to opening 342k, and the foaming agent 84 can be insufficiently injected into the upper and lower ends of the second port 340. When the second door 340 is tilted about 10 ° from the ground, the foaming agent 84 is mainly supplied to the upper end of the second door 340 as shown in Fig. 58, and is partially supplied to the lower end of the second port 340. At this point, the foaming agent 84 is uniformly distributed over the wide surface of the second port 340, having a uniform thickness as a whole. When the foaming agent 84 is further injected, the interior of the second port 340 is uniformly filled with the foaming agent 84. When the second door 340 is tilted about 20 ° from the ground, most of the foaming agent 84 is supplied to the upper end of the second door 340 as shown in Fig. 59. At this point, since a foaming 84 is hardly injected into the lower end of the second port 340, the foaming agent 84 is injected non-uniformly into the second port 340, When the second port 340 is tilted about 30 ° from the ground, the foaming agent 84 flows down to an upper end of the second port 340 as shown in Fig. 60, and is not injected to the lower ends of the second port 340. Thus, in this state, a portion of the lower end of the second port 340 may not be filled with defoaming agent 84. When the second port 340 is tilted about 45 ° from the ground, the foaming agent 84 flows down to an upper end of the second port 340 as illustrated in Fig. 61. In addition, the foaming agent 84 which flows the high speed can be branched into several parts. In this way, an insulating layer can have a non-uniform thickness even at the upper end of the second port 340. In addition, the foaming agent 84 can be hardened in one region beforehand to suppress the movement of the foaming agent 84, so that a foaming agent 84 can be supplied non-uniformly. As a result under the conditions described above, a preferable tilt angle of the second port 340 has been found to be about 10 ° or less when the foaming agent 84 is injected. In more detail, a preferred angle of inclination of the second door 340 can vary from about 4 ° to about 6 °. Fig. 62 is an enlarged perspective view showing a refrigerator with the second door removed according to an embodiment. Fig. 63 is a graph that shows variations in the hardness of the gaskets formed from different materials according to a temperature variation according to a modality. Since the refrigerator illustrated in Fig. 62 is described in the previous modalities, a description of it will be omitted. In Fig. 63, a horizontal axis denotes temperature, and a vertical axis denotes Shore Hardness. With reference to Fig. 63, a variation in the hardness of the silicone gasket formed according to the temperature variation is even less than that of the polyvinyl chloride (PVC) gasket. Specifically, the variation in hardness of the silicone gasket 45 is arranged substantially within 1 to 2 in a range of -20 ° C to 60 ° C. Thus, when gasket 344 is formed of silicone 45, the variation in hardness of gasket 344 is very small even as the temperature varies, so that the resilient strength of the gasket 344 hardly changes while the temperature varies. Thus, the space between the first door 310 and the second door 340 can be efficiently sealed. Especially, even at a low temperature, gasket 344 is adhered very close with the predetermined amount of elastic force to the first port 310 to prevent cold air leakage. Hereinafter, the structure of the second door 340 will now be described in more detail with reference to the accompanying drawings. Fig. 64 is an enlarged perspective view showing the front side of the second door. Fig. 65 is a rear view showing a second door on which a ground wire is laid. Since the second door illustrated in Fig. 64 is described with reference to Figs. 47 and 54, a description of it will be omitted here except for a ground wire 347 which is disposed on the second door. With reference to Figs. 64 and 65, the door case 342 can be formed of plastic, and the door plate 343 can be formed of tempered glass or transparent plastic. In detail, an insulator can be arranged between a door case 342 and the door plate 343. The insulator can be formed by filling the door case 342 and door plate 343 with a foaming agent. Alternatively, the insulator (e.g., a vacuum insulator) disposed between a door case 342 and the door plate 343 can be removable when the second door 340 is mounted. The lower hinge assembly 54 is formed of metal to be installed on a door case 342 as described above. When the lower hinge assembly 54 comes into contact with the door case 342, the lower hinge assembly 54 may come into contact with the side decoration 346 which is formed of metal. That is, after the second door 340 is assembled, the lower hinge assembly 54 contacts the side decoration 346 to allow a movement of the electrical charges. The decorations of the lid 345 can be formed of plastic or metal like aluminum. The decoration of the lid 345 that forms the upper surface of the second door 340 is provided with a hinge hole that is axially coupled to the second hinge 51, and the decoration of the cover 345 that forms the lower surface of the second door 340 is provided with a hinge hole for axle coupling of the hinge bracket 53 to the lower hinge assembly 54. The side decorations 346 can be formed of metal like aluminum, and form the exterior of the second door 340. The ground wire 347 can be arranged between the side decorations 346. The ground wire 347 is used to discharge an electric current, which can occur while the second port 340 is used, out of the second port 340, and connects the side decorations 346 to each other. The side decorations 346 and both ends of the ground wire 347 can be adhered to each other through the tape, or coupled through a coupling member like screws, or connected through a coupling structure like a clip, but the present disclosure does not is limited to that. For example, with reference to Fig. 64, the ends of the ground wire 347 can be provided with connecting parts 347a having clip shapes to be fitted over the projection ends of the side decorations 346. Thus, the ground wire 347 can be connected to the side decorations 346 only by adjusting the connecting parts 347a respectively on the side decorations 346 without an additional coupling member. Thus, static electricity remaining in one of the side decorations 346 can move the other side decoration 346 through the ground wire 347, and be discharged out through a second port 340. Hereinafter, static electricity that occurs at the second port 340 and a current flow due to static electricity will now be described in detail. Figs. 66A and 66B are schematic views that illustrate the static electricity that occurs in the second port. With reference to Figs. 66A and 66B, electrons do not actively migrate until a second port 340 is opened a few times. As shown in Fig. 66A, a front case 314 (corresponding to the second part 312 in Fig. 4) of the first door 310 and the gasket 344 are electrically neutral to be stable. In this state, although a user holds a second door 340 to open or close the second door 340, static electricity does not occur since a residual charge does not exist. Thus, the user can comfortably use the second door 340. When the second door 340 is frequently opened and closed, the gasket surface 344 repeatedly contacts and separates from the surface of the front case 314 of the first door 310. Especially, as the frequency of contact and separation is increased , the amount of static electricity increases. Thus, since a portion of the gasket 344, which is distant from the axis of rotation of the second port 340, has a large turning radius, contact and separation occur clearly in the gasket portion 344, but contact and separation occur not clearly in a portion of the gasket 344 near the axis of rotation. Thus, the amount of static electricity is relatively large in the front case 314 and the distant portion of the gasket 344 of the axis of rotation. In detail, when the second port 340 is repeatedly opened and closed, contact and separation repeatedly occur between the gasket 344 and the surface of the front case 314, so that the electrons actively migrate. That is, when electrons from the first port 310 migrate to the gasket 344, electrons are accumulated in the gasket 344, and thus, the first port 310 is positively charged, and the second port 340 is negatively charged. As such, since the electrons accumulated in gasket 344 also migrate to the second port 340 provided with the gasket 344, when a user holds the second port 340, static electricity occurs as illustrated in Fig. 66B. In particular, the side decoration 346 distant from the rotation axis of the second door 340 is easily touched by a user hand while the second door 340 rotates. In addition, since a side decoration 346 is adjacent to the gasket 344, electrons migrate easily. In addition, since a side decoration 346 is formed of metal like aluminum, when the negatively charged side decoration 346 is touched by a user's hand, static electricity can cause a spark. Thus, when side decorations 346 are connected via ground wire 347 as shown in Fig. 65, the electrons (charges) remaining in the side decoration distant 346 from the rotation axis of the second port 340 can migrate to the side decoration 346 adjacent to the second port 340. The second door 340 is axially coupled to the hinge support 53 which is formed of metal, and the side decoration 346 adjacent to the axis of rotation of the second door 340 comes into contact with the lower hinge assembly 54. In addition, the lower hinge 54 is coupled to hinge holder 53, and thus, the remaining electrons in the second door 340 are induced to migrate to the first door 310 through adjacent side decoration 346, the lower hinge assembly 54, and the hinge holder 53 . That is, the static electricity that occurs in one of the side decorations 346 can migrate to the other side decoration 346 through the ground wire 347. Since the side decoration 346 adjacent to the axis of rotation of the second door 340 comes into contact with the set of lower hinge 54, and the lower hinge assembly 54 is connected to hinge support 53, the remaining loads can be induced to the first door 310 sequentially. Thus, even when a user touches the side decoration 346 away from the axis of rotation to rotate the second door 340, static electricity does not occur. Loads induced through a second port 340 are disappeared at the first port 310, or are guided to a ground wire 315 disposed within the first port 310, and are then discharged through cabinet 10 or an external floor. Hereinafter, various structures for transmitting an induced current to the first door 310 outwards will now be described according to the modalities. In the following modalities, a description of the equal parts of the second port 340 as that of the previous modalities will be omitted, and similar reference numbers 5 denote equal elements. Fig. 67 is a perspective view illustrating a refrigerator including the second door being opened according to an embodiment. Referring to Fig. 67, the second door 340 is pivotally connected to the first door 310 through the second hinge 51. The side decorations 346 can form the right and left surfaces of the second door 340, and the decorations of the lid 345 can form the upper and lower surfaces of the second door 340. The decorations of the lid 345 can be formed of metal like aluminum. The ground wire 347 can be arranged inside the second port 340 to 15 connect the side decorations 346 to each other. The second hinge 51 can contact the side decoration 346. Thus, loads induced to the side decoration 346 through the ground wire 347 can be induced to the first door 310 sequentially through the cover decoration 345 coupled to the upper end of the second door 340 20 and through the second hinge 51. Then, the loads are unloaded to cabinet 10 through the first hinge 52 connecting the first port 310 to cabinet 10. If necessary, an earth sub-wire 348 can be provided, one end of which is connected to the side decoration adjacent 346 to the axis of rotation of the second door 340. The earth sub-wire 348 can be connected to one side of the cover decoration 345, or be guided out through the second hinge 51 and be connected to cabinet 10. Fig. 68 is a perspective view showing a refrigerator including the second door according to another embodiment. Referring to Fig. 68, the upper and lower ends of the second door 340 are pivotally coupled to the first door 310 through the second hinge 51, the lower hinge assembly 54, and the hinge support 53. The side decorations 346 can form the left and right surfaces 35 of the second door 340, and the cover decorations 345 can form the upper and lower surfaces of the second door 340. Theme wire 347 can be arranged inside the second door 340 to connect the side decorations 346 to each other. The ground wire 315 can be arranged inside the first port 310, and one end of the ground wire 315 can be connected to one side of the hinge support 53 within the first port 310. The ground wire 315 can be indirectly connected to the hinge support 53 through a coupling member that couples the hinge bracket 53 to the first door 310. The other end of the ground wire 315 disposed inside the first door 310 is guided outwards through the first hinge 52, and thus is connected to the side of the cabinet 10. Thus, remaining loads on the second door 340 are induced to migrate through the ground wire 347 to the side decoration 346 adjacent to the axis of rotation of the second door 340. The loads induced to the side decoration 346 are induced sequentially to the lower hinge assembly 54 and the hinge support 53. The loads induced to the hinge support 53 can be discharged to the cabinet 10 or the exterior of the refrigerator 1 through the ground wire 315 which is connected to the hinge support 53 and disposed within the first door 310. Instead of guiding the ground wire 315 disposed inside the first door 310 out through the first hinge 52, the ground wire 315 can be extended downwards to contact the cabinet 10 through a hinge support (not shown) that supports the first port 310 from the bottom. Fig. 69 is a perspective view showing a refrigerator including the second door according to another embodiment. Referring to Fig. 69, the second door 340 is pivotally connected to the first door 310 through the second hinge 51 and the hinge support 53. The side decorations 346 can form the right and left surfaces of the second door 340, and the decorations of the lid 345 can form the upper and lower surfaces of the second door 340. At least one of the cover decorations 345 provided for the upper and lower portions of the second door 340 can electrically connect side decorations 346 to each other. In detail, at least a portion of the lid decoration 345 forming the bottom surface of the second door 340 can be formed of metal. Thus, when the lid decoration 345 is installed, the ends of the lid decoration 345 may come into contact with the lower ends of the side decorations 346, respectively. Thus, the side decorations 346 are electrically connected to each other through the lid decoration 345. To this end, the entire lid decoration 345 can be formed of metal, or a portion of it can be formed of metal. For example, when the decoration of the lid 345 is longitudinally forked in upper and lower portions, one of the upper and lower portions can be formed of metal, and the other can be formed of non-metal. Thus, and although the entire lid decoration 345 is not formed of metal, the side decorations 346 can be electrically connected. Alternatively, when the entire lid decoration 345 is formed of plastic, the top or bottom edge of the lid decoration 345 can be covered with a conductive contact 345a to connect side decorations 346. In detail, contact 345a can include the plate metal or be formed of the same material as that of the ground wire 347, and extend horizontally along the decoration of the lid 345. When installed, the decoration of the lid 345 may come into contact with the side decorations 346. Thus, remaining charges on the second door 340 or on the side decoration 346 can be induced to migrate through contact 345a from the cover decoration 345 to the side decoration 346 to the axis of rotation of the second door 340, and then be induced on the first door 310 through the second hinge 51 or the lower hinge assembly 54 and the hinge bracket 53. Then, the loads can be discharged to the cabinet 10 or out of the refrigerator 1 through a floor structure on the first door 310. Fig. 70 is a perspective view showing a refrigerator when the second door is opened, according to an embodiment. Fig. 71 is a partial front view showing a first door according to an embodiment. Fig. 72 is a rear view showing a second door according to an embodiment. With reference to Figs. 70 to 72, refrigerator 1 has the same configuration as that of the previous modalities except that an inclined surface 316a is formed on the inner edge of opening 316 of the first door 310 and gasket 344 is adhered very close to the inclined surface 316a , which will now be described in more detail. The first door 310 can include the first part 311 on the bottom side of the clamping part 313, and the second part 312 on the top side of the clamping part 313. The first part 311 and the second part 312 can be skipped from one to another, and the second part 312 can be lower than the first part 311. The second door 340 can be installed on a second part 312. When the second door 340 is closed, the front surface of a first part 311 can be coplanar with the surface front of the second door 340. The second part 312 can be constituted by the front case 314 formed of plastic, and the front case 314 can be provided with the opening 316. The inclined surface 316a can be arranged around the opening 316. The inclination of the inclined surface 316a is different from an inclination around the protruding part 342a to mainly prevent cold air leakage. This will be described in more detail with reference to Fig. 73. When the second door 340 is closed, the gasket 344 around the rear surface of the second door 340 comes into contact with the front end of the inclined surface 316a. The gasket 344 extends along the lower edge of the protruding part 342a. That is, the gasket 344 can extend along the boundary between the protrusion part 342a and the rear surface of the second door 340. Thus, when the second door 340 is closed, the gasket 344 is adhered very close to the inclined surface 316a to secondarily prevent cold air from leaking. Henceforth, the opening and closing of the second door of a refrigerator door configured as described above will now be described in detail with reference to the accompanying drawings according to an embodiment. Fig. 73 is a cross-sectional view showing a door of the refrigerator compartment when the second door is opened, according to an embodiment. Fig. 74 is a cross-sectional view illustrating the refrigerator compartment door when the second door is closed. With reference to Figs. 73 and 74, when the second door 340 is opened, the gasket 344 is spaced from the inner edge of the opening 316. In this state, a user still rotates the second door 340 to remove the food from the storage device 40 through the opening 316 or to put the food in the storage device 40. When the second door 340 is rotated and closed, the protrusion part 342a of the second door 340 is inserted into the opening 316. Then, the gasket 344 contacts the inclined surface 316a of the opening 316. The angle of inclination of the inclined surface 316a is different from that of the edge of the protruding part 342a. In detail, from the inner edge of the opening 316 to the center of the opening (from the upper end to the lower end in Fig. 73), the inclined surface 316a is inclined to get closer to the edge of the protruding part 342a. Even when the second door 340 is completely closed, the edge of the protruding part 342a is spaced from the inclined surface 316a to receive the gasket 344. Then, the rear surface of the second door 340 is arranged closer to the first part 311 of the first door 310 to more efficiently prevent cold air leakage. If the gasket 344 is disposed between the rear surface of the second door 340 and the first part 311 of the first door 310, the first door 310 is spaced from the second door 340 by the thickness of the gasket 344. As such, since the gasket 344 is arranged around the lower edge of the protruding part 342a such that the gasket 344 is adhered very close to the inclined surface 316a, the rear surface of the second door 340 can be arranged closer to the front surface of the first door 310. As a result, the possibility that cold air can be exchanged for heat with outside air is still lessened. Fig. 75 is a perspective view illustrating a refrigerator compartment door when the second door is opened, according to an embodiment. Referring to Fig. 75, the front surface of the first door 310, particularly the front surface of the front case 314 corresponding to the outer edge of the opening 316 is provided with a gasket receiving part 314b. The receiving part of the gasket 314b extends in a tight curve around the opening 316. The receiving part of the gasket 314b can be a size corresponding to the gasket 710 of the second port 340 to receive the gasket 710 which will be described later. The gasket 710 can be arranged around the protruding part 342a. When the second door 340 is closed, the gasket 710 is adhered close to the receiving part of the gasket 314b to prevent leakage of cold air. Gasket 710 can be formed of rubber, silicone, or synthetic resin. From now on, the gasket and the first door coming into contact with the gasket will now be described in more detail with reference to the accompanying drawings. Fig. 76 is a cross-sectional view illustrating a refrigerator compartment door according to an embodiment. Referring to Fig. 76, the gasket installation part 342b is arranged on the rear surface of the second door 340. A gasket fixing part 711 7 is inserted and fixed to the gasket installation part 342b, and the gasket installation part gasket 342b is arranged around protrusion part 342a. The gasket 710 can include the fixing part 711 inserted in the gasket installation part 342b, a chamber part 712 that is hollow, and a magnetic part 713 that includes a permanent magnet 714 therein. In detail, the fixing part 711 can be inserted into the gasket installation part 342b. The chamber part 712 extends from the fixing part 711 and has an internal space, so that the gasket 710 can be deformed by pressure. Thus, gasket 710 can absorb shock and improve sealing performance when second door 340 is opened and closed. The magnetic part 713 is configured to receive the permanent magnet 714. The magnetic part 713 can be arranged at one end of the gasket 710, and directly come into contact with the front surface of the first door 310 when the second door 340 is closed. Since the magnetic part 713 can have a shape corresponding to the receiving part of the gasket 314b of the first door 310, when the second door 340 is closed, the magnetic part 713 can be inserted in the receiving part of the gasket 314b. A fixing member 720 is arranged on the first door 310 to adhere closely to the gasket 710. The fixing member 720 can be formed of metal to fix the permanent magnet 714 using magnetic force, and has a plate shape with a width predetermined. The fixing member 720 can be formed of high-strength steel around the opening 316. Thus, the fixing member 720 reinforces the upper portion of the first door 310, that is, the portion of the first door 310 provided with the opening 316 for prevent deformation of the first door 310. The fixing member 720 can be embedded in the first door 310 corresponding to the rear surface of the gasket receiving part 314b, and thus, it can be invisible from the outside. The fixing member 720 can be a metal member that continuously extends along the receiving part of the gasket 314b. Alternatively, the fixing member 720 can include a plurality of plates that are spaced from each other along the gasket receiving part 314b. The fixing member 720 can be bent to surround the rear surface of the gasket receiving part 314b. Henceforth, the opening and closing of the second door of a refrigerator door configured as described above will now be described in detail. First, when a user closes the second door 340, the lock hook 341 is inserted into the lock notch 317 and confined to the locking device 60. Thus, the second door 340 can be confined to the first door 310 and held in the closing state. When the second door 340 is closed, the gasket 710 is adhered close to the first door 310 to prevent cold air from leaking out of the second storage compartment 405. At this point, the magnetic part 713 of the gasket 710 installed on the second door 340 is inserted into the receiving part of the gasket 314b. Then, the magnetic force adheres very closely the magnetic part 713 of the gasket 710 to the fixing member 720 with the front case 314 of the first door 310 between them. The gasket receiving part 314b can completely receive the magnetic part 713. When the second door 340 is completely closed, the chamber part 712 is compressed. In this state, since most of the gasket 710 is inserted into the receiving part of the gasket 314b, the second door 340 can be securely attached to the first door 310. Thus, since the distance between the first door 310 and the second port 340 is minimized, when the second port 340 is closed, the first port 310 and the second port 340 provide a more enhanced sense of unity. A refrigerator according to the present disclosure can be described according to several other modalities in addition to the previous ones. From now on, a refrigerator will now be described with reference to the accompanying drawings according to another modality. In the current mode, the gasket is provided for the first door, and a fixing member is provided for the second door. Thus, in the current modality, the rest of the parts except for the gasket and the fixing member is the same as that of the previous modalities, a description of it will be omitted, and equal reference numerals denote equal elements. Fig. 77 is a perspective view illustrating a refrigerator when the second door is opened according to an embodiment. Fig. 78 is a cross-sectional view illustrating a refrigerator compartment door according to an embodiment. With reference to Figs. 77 and 78, the gasket 730 is arranged around the opening 316 of the first door 310. The gasket 730 is the same as the gasket illustrated in Figs. 75 and 76, and includes a fixing part 731, a chamber part 732 that are integrally formed with the fixing part 731 and is hollow, and a magnetic part 733 that includes a permanent magnet 734 therein. Since the gasket 730 is the same as the gasket illustrated in Figs. 75 and 76, a description of it will be omitted. However, when the second door 340 is closed, the magnetic part 733 directly contacts the rear surface of the second door 340. The magnetic part 733 can be directly or indirectly attached to a fixing member 740 provided for the second door 340 . The fixing member 740 can be arranged on the rear surface or inside the second door 340 corresponding to the edge of the protruding part 342a. In detail, the fixing member 740 can contact the rear surface of the second door 340 within the second door 340. Thus, when the second door 340 is closed, the magnetic part 733 of the gasket 730 is adhered very close to the fixing 740 on the rear surface of the second door 340. The fixing member 740 can have a plate shape with a predetermined width, or have a shape of a tetragonal structure. Alternatively, the fastening member 740 has a folded frame shape to prevent deformation of the second door 340 and to reinforce the second door 340. For this purpose, the fastening member 740 can be arranged on the edge of the rear surface of the second door 340 and be spaced from the protruding part 342a, and the gasket 710 can be arranged on the first port 310 to correspond to the fixing member 740. A refrigerator according to the present disclosure can be described according to several other modalities in addition to the previous ones. From now on, a refrigerator will now be described with reference to the accompanying drawings according to another modality. In the current mode, a magnetic member is provided for the first door, and a fixing member is provided for the second door. Thus, in the current mode, the rest of the parts for the magnetic member and the fixing member are the same as those of the previous modalities, a description of the same will be omitted, and equal reference numerals denote equal elements. Fig. 79 is a perspective view showing a door of the refrigerator compartment when the second door is opened according to an embodiment. Referring to Fig. 79, the magnetic members 750 can be arranged inside the first door 310. The magnetic members 750 can include a permanent magnet, and are arranged outside the opening 316. The magnetic members 750 can be adhered close to the surface. front of the first door 310, and thus can be adhered very close to the fixing members 760 by magnetic force when the second door 340 is closed. The magnetic members 750 can be arranged along the edge of the opening 316, or be arranged on one side of the opening 316. Alternatively, the magnetic members 750 can be arranged on the lower and upper sides of the locking device 60, respectively. For example, as shown in Fig. 79, the magnetic members 750 can be arranged on the first door 310 on the left side of the opening 316. The fixing members 760 can be arranged on the rear surface of the second door 340 to correspond to the magnetic members 750 Thus, the magnetic force between the magnetic members 750 and the fixing members 760 more stably couples the locking hook 341 with the locking device 60. Alternatively, the position of the magnetic members 750 and the position of the fixing members 760 can be modified with each other. That is, the magnetic members 750 can be provided for the second door 340, and the fixing members 760 can be provided for the first door 310, The fixing members 760 can be arranged outside the protruding part 342a, and can be arranged in a position corresponding to the position of the magnetic members 750. That is, the gasket 344 can be arranged between the bottom of the protruding part 342a and the members fastening 760. Thus, when the second door 340 is closed, the magnetic force adheres closely to the magnetic members 750 with the fastening members 760, so that the gasket 344 can be adhered in a manner close to the first door 310. The fixing members 760 can have a predetermined cross section or a folded structure shape, and are arranged within the second door 340 to prevent deformation of the second door 340 and to reinforce the second door 340. Fig. 80 is a perspective view showing a refrigerator when the second door is opened, according to an embodiment. Fig. 81 is an enlarged perspective view illustrating a second door. With reference to Figs. 80 to 81, as described according to the previous modalities, the exterior of the refrigerator 1 can be formed by cabinet 10 and doors 20 and 30. Cabinet 10 forms a storage space, and doors 20 and 30 open and close the storage space. The freezer compartment door 20 can be made up of a single door, and the refrigerator compartment door 30 can be made up of a first door 310 and a second door 340. The front surface of the refrigerator compartment door 30 and the front surface of a freezer compartment door 20 are provided with the clamping part 313 to be held to open and close the refrigerator compartment door 30 and the freezer compartment door 20. A clamping part 313 is pocket-shaped and extends horizontally. The clamping part 313 is arranged at a constant height over the refrigerator compartment door 30 and the freezer compartment door 20, and extends along the same line from an outer end of the refrigerator compartment door 30 to an outer end of the door freezer compartment 20. The clamping part 313 can be arranged in a portion that can be easily held by a user, and be arranged in the middle of the vertical height of the freezer compartment door 20 and the refrigerator compartment door 30. A portion of the clamping part 313 provided for the refrigerator compartment door 30 it can be arranged at the limit between the first door 310 and the second door 340 to be described later. A door basket 342f can be removably attached to the rear surface of the second door 340. The door basket 342f can be installed over the protrusion part 342a, and a region provided with the door basket 342f can be provided with a recess 342g. The basket installation part 342e to which the door basket 342f is removably attached can be arranged on the right and left sides of the protruding part 342a. Thus, both sides of the door basket 342f and the basket installation part 342e can be shaped to couple with one another. When the second door 340 is closed, the basket of door 342f can be inserted into opening 316. When the second door 340 is closed, the basket of door 342f does not interfere with the structures on the storage device 40. For example, when the second door 340 is closed, the rear surface of the basket of door 342f and the rear surface of the first door 310 corresponding to the region provided with the storage device 40 can be arranged on the same vertical surface. That is, the basket of the door 342f may have a front and rear width so as not to enter the storage device 40. Then, when the second door 340 is closed, the rear surface of the basket of the door 342f is disposed outside the storage device 40 to prevent interference with the food stored in the storage device 40 or baskets. Alternatively, when the second door 340 is closed, the basket of the door 342f can be arranged between the baskets within the storage device 40. As described above, the lock hook 341 can be arranged on the rear surface of the second door 340 corresponding to the locking device 60 such that a locking hook 341 is coupled with the locking device 60 according to the rotation of the second door 340 . In detail, the hook fastening part 341a is attached to a base plate 341c which is a separate member. The base plate 341c is coupled to a hook installation recess 342h on the rear surface of the second door 340. In this way, the lock hook 341 is fixed to the rear surface of the second door 340. The hook installation recess 342h is recessed in the door case 342 that forms the rear surface of the second door 340, so that the base plate 341c is coplanar with the door case 342. In detail, the base plate 341c can have a format corresponding to the 342h hook installation recess. The front surface of the base plate 341c can have holes with shapes corresponding to the attachment protrusions of the hook attachment part 341a. The screws passing through the holes are inserted from the rear side of the base plate 341c into the securing protrusions, so that the locking hook 341 can be attached to the base plate 341c. The screws inserted from the front side of the base plate 341c fix the base plate 341c, coupled to the lock hook 341, to the hook installation recess 342h. That is, the lock hook 341 is coupled to the base plate 341c, and then, the base plate 341c is coupled to the hook installation recess 342h. This coupling structure will now be described in more detail. In detail, when a shock or load is applied to the lock hook 341, the lock hook 341 or a portion of the second door 340 provided with the lock hook 341 can be broken. In the current mode, instead of coupling the lock hook 341 directly to the door case 342, the lock hook 341 is indirectly attached to the door case 342 through the base plate 341c. Thus, when the lock hook 341 is broken, the possibility of the door case 342 also being broken is reduced. Only the lock hook 341 can be replaced by removing the lock hook 341 from the base plate 341c, or both the lock hook 341 and the base plate 341c can be replaced. Therefore, it is unnecessary to replace the case of port 342, and thus, repair costs can be reduced. The coupling structure of the first and second doors will now be described in detail with reference to the accompanying drawings. Fig. 82 is an enlarged perspective view illustrating the refrigerator compartment door with the second door and the lower hinge, Fig. 83 is a partial sectioned perspective view illustrating the refrigerator compartment door coupled to the second door. With reference to Figs. 82 and 83, the upper end of the second door 340 is supported by a second hinge 51, and the lower end of the second door 340 is pivotally installed on the first door 310 through a lower hinge assembly 57. The lower hinge assembly 57 according to the current modality it is different in configuration of the lower hinge set described above 54. The lower hinge assembly 57 may include a hinge member 571 attached to the second door 340, a hinge stop 572 coupled to the hinge member 571, a damping member 574 installed on the first door 310 and coupled to the axis of rotation 571b of the hinge member 571, and a containment member 573 installed on the first door 310 to limit a rotation angle of the second door 340. In detail, hinge member 571 can be attached to the hinge installation part 571a provided for the lower end of the second door 340. Then, the hinge member 571 is attached to the second door 340, and thus can be rotated with the second door 340. The axis of rotation 571b as the center of rotation of the second door 340 passes through the containment member 573 and is coupled by the axis to the damping member 574. The hinge stop 572 is coupled to the lower surface of the hinge member 571 through a coupling member. Hinge stop 572 can be integrally formed with hinge member 571. Hinge stop 572 can include confinement protrusion 572a which projects downwards. Confinement protrusion 572a passes through a portion of confinement member 573. Confinement protrusion 572a rotates along with second port 340, and interferes with a portion of confinement member 573 to limit the opening of second port 340 at an angle predetermined. Damping member 574 is attached to first door 310. Damping member 574 is axially coupled to hinge member 571, and the structure can be arranged within damping member 574 to slow the rotation of hinge member 571. O damping member 574 can be configured such that the second port 340 automatically rotates to a predetermined angle and is decelerated over the predetermined angle. The structure described above within the damping member 574 is similar to that of the lower hinge assembly 54 according to the previous embodiments, and a detailed description of it will be omitted. The damping member 574 is installed on a decoration of the clamping part 575 provided for the first door 310. The decoration of the clamping part 575 is installed on the front surface of the first door 310 provided for the clamping part 313. That is, the decoration of the clamping part 575 is installed on a portion that defines a space between the lower end of the second door 340 and the upper end of the first part 311 of the first door 310. The decoration of the clamping part 575 can be additionally provided for a freezer compartment door 20. The decoration of the clamping part 575 may include a thin recess part 575a which is arranged opposite the axis of rotation of the first door 310, and a thick support part 575b which is arranged on one side adjacent to the axis of rotation. Thus, the clamping part 313 provided for the recess part 575a can be held by a user to open the first door 310. Damping member 574 and confining member 573 can be installed on a support part 575b. Containment member 573 is installed on the upper surface of support part 575b. Containment member 573 limits the rotation of second port 340, and confines damping member 574. In detail, the containment member 573 is fixed to the upper surface of the support part 575b by means of a screw, and protects the damping member 574 on the upper side when the containment member 573 is installed on the first door 310. The containment 573 has an axis of rotation of the insertion hole 573a through which the axis of rotation 574a of the damping member 574 is exposed. In more detail, the axis of rotation 571b of the hinge member 571 passes through the insertion hole of the rotation axis 573a, and the axis of rotation 574a of the damping member 574 passes through the insertion hole of the rotation axis 573a and is inserted in the axis of rotation 571b. From now on, the opening and closing of the second door will now be described with reference to the accompanying drawings. Fig. 84 is a front view showing the refrigerator when the second door is closed. Fig. 85 is a bottom view showing a portion of the second door with the lower hinge assembly when the second door is closed. With reference to Figs. 84 and 85, confinement member 573 may have 10 the insertion hole of rotation axis 573a and a confinement protrusion receiving part 573b that receives confinement protrusion 572a. In detail, the confinement protrusion receiving portion 573b extends along a movable confinement protrusion path 572a when the confinement protrusion 572a moves according to the rotation of the second door 340. Thus, when the second door 340 rotates, the confinement protrusion 572a moves within the confinement protrusion receiving part 573b. In detail, while the second door 340 rotates, the confinement protrusion 572a revolves around the axis of rotation 571b. When the second port 340 is completely closed and opened at a predetermined angle, the confinement protrusion receiving portion 573b limits a movement of the confinement protrusion 572a to confine the second port 340. In detail, the confinement protrusion receiving part 573b has a predetermined curvature, and one end of it comes into contact with the confinement protrusion 572a when the second door 340 is closed as illustrated in Fig. 85. Fig. 86 is a front view showing the refrigerator when the second door is opened. Fig. 87 is a bottom view showing a portion of the second door with the lower hinge assembly when the second door is opened. With reference to Figs. 86 and 87, the other end of the confinement protrusion receiving part 573b comes into contact with confinement protrusion 572a when the second port 340 is opened at a predetermined angle (about 100 ° to 130 °). Thus, when the second port 340 is opened at the predetermined angle, the confinement protrusion 572a interferes 35 with the confinement protrusion receiving part 573b to stop the confinement protrusion 572a and limit the rotation of the second port 340. As such, the angle of rotation of the second door 340 is limited by the lower hinge assembly 57 to prevent cold air from leaking due to an excessive opening of the second door 340. In addition, a collision of the second door 340 with furniture adjacent to the refrigerator 1 can be prevented. In addition, structures that limit the rotation of the second door 340 are not exposed to the outside, thus preventing, for example, an accident that a user's finger is stuck to the structures. The terms "first", "second", "A", "B", "(a)", and "(b)" can be selectively or interchangeably used for members. These terms are used only to differentiate one member, component, region, layer or portion from another, and the intrinsic qualities, orders or sequences of the members are not limited by these terms. It will be understood that when an element is referred to as being coupled to, combined with, or connected to another element, it can be directly coupled to, combined with, or connected to another element or intermediate elements may also be present. Although the modalities have been described with reference to a number of illustrative modalities, it should be understood that countless other modifications and modalities can be devised by those versed in the technique that will fall within the spirit and scope of the principles of this disclosure. More particularly, several variations and modifications are possible in the component parts and / or arrangement arrangements of the subject within the scope of the disclosure, the attached drawings and claims. In addition to changes and variations in component parts and / or arrangements, alternative uses will also be evident for those skilled in the art.
权利要求:
Claims (14) [0001] 1. Refrigerator (1), comprising: a cabinet (10); a first storage compartment (104) within the cabinet; a first door (310) having a forward facing surface, a rear facing surface, an upward facing surface, a downward facing surface, a first facing side and a second facing side, the first door being pivotally connected to the cabinet and configured to open and close at least a portion of the first storage compartment so that when the first door is oriented in a closed position, the backward surface of the first door comes into contact with a front facing surface of the cabinet, the first door including: a second storage compartment (405), and an access opening (316) that allows access to the second storage compartment; a second door (340) having a forward facing surface, a rear facing surface, an upward facing surface, a downward facing surface, a first facing side and a second facing side, the second door being pivotally connected to the first door and configured to open and close the access opening so that when the second door is oriented in a closed position, the rear facing surface of the second door comes into contact with the facing front surface the first door to close the access opening; and a hinge assembly including: a first hinge (52) that pivotally connects the upward facing surface of the first door to the cabinet, and a second hinge (51) that pivots connects the upward facing surface of the second door to the upward facing surface the first door, where the first door and the second door are configured to rotate in the same direction, where the first hinge comprises: a first coupling part (521) fixed to the cabinet; a first extension (522) extending from the first coupling part towards the first door; and a first hinge axis (524) coupled to the first extension and inserted into the upwardly facing surface of the first door, the second hinge comprising: a second coupling part (511) attached to the first door; a second extension (512) extending from the second coupling part; and a second hinge axis (514) coupled to the second extension and inserted in the upward facing surface of the second door, characterized by the fact that the first hinge axis is located in a position closer to the forward facing surface of the first door. than the rear facing surface of the first door and, when the second door is oriented in the closed position, the first hinge axis is located closer to the rear facing surface of the second door than the rear facing surface of the first door. [0002] 2. Refrigerator, according to claim 1, characterized by the fact that the first and second doors have a relative orientation in which, when the first door and the second door are oriented in closed positions, the first surface facing the side of the first door and the first surface facing the side of the second door are coplanar. [0003] 3. Refrigerator according to claim 2, characterized by the fact that the upward surface of the first door and the upward surface of the second door are coplanar, and the second hinge axis is positioned in front of the first hinge axis . [0004] 4. Refrigerator according to claim 2, characterized by the fact that the upward facing surface of the first door includes a cut-out portion (310b) which is descended downwardly from a higher upward facing surface of the first door , where the upward surface of the second door includes a second cutout portion (340b) which is recessed in an upper portion of the second door, and where the hinge assembly is connected to the first and second doors in a space that is defined by the first and second cut portions. [0005] 5. Refrigerator according to claim 4, characterized by the fact that the second cut-out portion is lowered downwards starting at a predetermined distance away from the surface facing the second door. [0006] 6. Refrigerator according to claim 4, characterized by the fact that the first hinge axis is inserted in the upward facing surface of the first door in the first cut-out portion, and the second hinge axis is inserted in the upward facing surface. second door in the second cut portion. [0007] 7. Refrigerator, according to claim 2, characterized by the fact that the first extension is configured to be positioned vertically higher than the second extension. [0008] 8. Refrigerator according to claim 2, characterized by the fact that the diameter of the first hinge axis is greater than that of the second hinge axis. [0009] 9. Refrigerator according to claim 2, characterized in that the depth of insertion of the first hinge axis in a first door is greater than the depth of insertion of the second hinge axis in the second door. [0010] 10. Refrigerator according to claim 2, characterized in that the upper ends of the first hinge and the second hinge, respectively, are positioned vertically lower than the uppermost portion of the surface facing the second door. [0011] 11. Refrigerator according to claim 2, characterized by the fact that the position in which the first hinge axis is inserted in the upward facing surface of the first door is located at a midpoint of a distance between an upward facing surface from the first door and a front facing surface of the second door, the distance being the distance between the rear facing surface of the first door and the facing front surface of the second door at a time when the second door is closed. [0012] 12. Refrigerator according to claim 2, characterized by the fact that a distance from a first hinge axis from the first hinge axis to the first surface facing the side of the first door is greater than a distance from a second hinge axis from the second hinge axis to the first surface facing the second door. [0013] 13. Refrigerator according to claim 1, characterized by the fact that it comprises a seal (319) provided on a surface facing the back of the first door, in which the seal is in contact with the surface facing the front of the cabinet when the first door is in the closed position. [0014] 14. Refrigerator according to claim 1, characterized by the fact that it additionally comprises a gasket (334) provided on the rear facing surface of the second door, where the gasket is in contact with the front facing surface of the first door when the second door is in the closed position.
类似技术:
公开号 | 公开日 | 专利标题 BR112012016545B1|2020-10-13|refrigerator containing multiple storage compartments US10054360B2|2018-08-21|Refrigerator AU2014277716B2|2016-02-25|Refrigerator US20190041120A1|2019-02-07|Refrigerator KR101704817B1|2017-02-08|Refirgerator KR102059573B1|2019-12-27|Refrigerator KR20190101596A|2019-09-02|Refrigerator
同族专利:
公开号 | 公开日 DE202010018118U1|2014-07-21| KR20130058085A|2013-06-03| CN105783373B|2018-07-17| EP2521889B1|2018-06-06| CN103673480A|2014-03-26| AU2010339263B2|2014-09-18| CN102116554A|2011-07-06| US20150276301A1|2015-10-01| CN105783373A|2016-07-20| EP2521889A1|2012-11-14| US20140139094A1|2014-05-22| US9200830B2|2015-12-01| KR20130072186A|2013-07-01| RU2503898C1|2014-01-10| US20140139089A1|2014-05-22| CA2786085C|2015-01-20| CN105806008B|2018-09-11| KR101275987B1|2013-06-17| US20140139092A1|2014-05-22| CN104019597A|2014-09-03| AU2010339263B8|2014-10-09| US9322591B2|2016-04-26| KR101774070B1|2017-09-12| KR20130058084A|2013-06-03| KR101347002B1|2014-01-07| USRE48733E1|2021-09-14| CN104019606B|2016-09-14| US9175903B2|2015-11-03| CN102695933B|2015-07-22| EP2521889A4|2014-06-18| US9170045B2|2015-10-27| WO2011081279A1|2011-07-07| DE202010018121U1|2014-07-01| US20140139091A1|2014-05-22| EP2743619A1|2014-06-18| US9175901B2|2015-11-03| EP2759791A1|2014-07-30| KR101346866B1|2014-01-07| USRE47753E1|2019-12-03| CA2786085A1|2011-07-07| KR20130058087A|2013-06-03| US20140139093A1|2014-05-22| AU2010339263A1|2012-07-26| MX343593B|2016-11-10| EP2762817A1|2014-08-06| US20140139090A1|2014-05-22| MX2012007792A|2012-08-03| AU2010339263B9|2014-10-09| CN103673480B|2016-03-16| CN104019606A|2014-09-03| US20140203695A1|2014-07-24| US9175902B2|2015-11-03| BR112012016545A2|2016-04-19| US20130026900A1|2013-01-31| CN104019597B|2016-09-07| USRE48724E1|2021-09-07| CN102695933A|2012-09-26| CN105806008A|2016-07-27|
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法律状态:
2019-01-08| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]| 2019-10-01| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]| 2020-05-26| B09A| Decision: intention to grant [chapter 9.1 patent gazette]| 2020-10-13| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 13/10/2020, OBSERVADAS AS CONDICOES LEGAIS. |
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申请号 | 申请日 | 专利标题 KR20100000086|2010-01-04| KR10-2010-0000086|2010-01-04| PCT/KR2010/006297|WO2011081279A1|2010-01-04|2010-09-15|Refrigerator including multiple storage compartments| 相关专利
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