VEHICLE SEAT EQUIPPED WITH SIDE AIRBAG DEVICE, AND SIDE AIRBAG DEVICE

专利摘要:
The present invention relates to a vehicle seat (10) equipped with a side airbag device (14) which includes: an inflation device (22) disposed on an external side in a relative vehicle width direction. to a side frame (30); an inner chamber (64) housed within the side (16a), being configured to be inflated and disposed towards a portion of an occupant on the outside, toward the width of the vehicle, when receiving a gas from the flow device. inflation (22); an outer chamber (62) housed within the side (16a) being configured to be inflated and disposed towards the outer side, towards the width of the vehicle and on a front side of the vehicle relative to the inner chamber (64), when receiving gas supply; and a diffuser (53) housed within side (16a) and configured to supply gas to the inner chamber (64) of a first supply port (55) formed in a peripheral wall of the diffuser (53) when the inflation device (22) is activated.
公开号:BR102018067908A2
申请号:R102018067908-2
申请日:2018-09-05
公开日:2019-05-28
发明作者:Osamu Fukawatase；Takamichi KOMURA；Takeharu SUGISHIMA；Takayuki Shimizu；Mitsuo Nogami；Yuto Kobayashi
申请人:Toyota Jidosha Kabushiki Kaisha；
IPC主号:

专利说明:

Invention Patent Descriptive Report for VEHICLE SEAT EQUIPPED WITH SIDE AIRBAG DEVICE, AND SIDE AIRBAG DEVICE.
BACKGROUND OF THE INVENTION
1. FIELD OF THE INVENTION [001] The present invention relates to a vehicle seat equipped with a side airbag device, and a side airbag device.
2. DESCRIPTION OF RELATED TECHNIQUE [002] The publication of Japanese patent application No. 2009023494 (JP 2009-023494 A) describes a side airbag device including an inflation device, a main airbag and an auxiliary airbag. In this side airbag device, the inflation device, which is arranged on an external side in a direction the width of the seat, relative to an external lateral structure of a backrest, is contained within a base end part of the auxiliary airbag. A base end part of the main airbag is attached to that base end part of the auxiliary airbag, and the interior part of the auxiliary airbag and the interior part of the main airbag communicate with each other through a communication hole, formed in one part between those base end parts.
[003] In the side airbag device of the above configuration, the auxiliary airbag is inflated and is placed inside a lateral part of the backrest, before the main airbag, and moves an occupant towards the inner side in the direction of the seat width ( an inner side in a vehicle width direction), thereby expanding a space between the occupant and the side of a vehicle body in the direction of the vehicle width. This facilitates inflation and the deployment of the main airbag in the space between the occupant and the side of the vehicle body.
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2/37 [004] On the other hand, the publication of Japanese patent application No. 2014-080169 (JP 2014-080169 A) describes a vehicle seat equipped with a side airbag device. In this vehicle seat, an external side structure, provided within a lateral part of a backrest on an external side in a direction the width of the vehicle, has a side wall and a rear wall, and an airbag module is installed on one side side wall in a direction the width of the seat.
[005] The airbag module consists of a folded side airbag and an inflation device, which form a module. The side airbag includes a front deployment airbag, which is inflated and arranged in a space between an occupant and a side part of a vehicle body, and an internal inflation airbag, which is inflated inside the backrest. The internal inflation airbag is integrally attached to a rear end of the front deployment airbag, and the inner side of the internal inflation airbag communicates with the inner side of the front deployment airbag. A gas from the inflation device, contained within the front deployment airbag, near a joint with the internal inflation airbag, is distributed in the front deployment airbag and the internal inflation airbag.
SUMMARY OF THE INVENTION [006] In the side airbag device described in JP 2009-023494 A, the inflation device is arranged on the outside of the external side structure in the direction of the seat width. A part of the auxiliary airbag, on a forward end side from the base end part, rotates around the front side of the outer side frame to the inner side of the outer side frame, in the direction of the seat width, and is folded like an accordion. Therefore, a gas supply path from the base end part to the side of the forward end of the auxiliary airbag, if
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3/37 very curved (in a U shape as seen in a sectional plan view) on the vehicle's front side of the external side structure. This can cause a delay in inflation and in the arrangement of the auxiliary airbag, as the gas from the inflation device is not uniformly supplied to the side of the forward end of the auxiliary airbag. In this way, there is room for improvement from the point of view of restraint of the occupant by the auxiliary airbag (inside the bag) earlier.
[007] On the other hand, in the side airbag device described in JP 2014-080169 A, the inflation device is arranged on the inner side of the outer side structure in the direction of the seat width. As long as a gas supply path, from the inflation device to the internal inflation airbag, is thus not curved by the external side structure, the internal inflation airbag can be inflated and deployed earlier, and thus the occupant can be retained earlier. However, as long as the inflation device is provided within the internal inflation airbag, a gas at a high temperature, supplied from the inflation device, is supplied directly to the internal inflation airbag. Thus, there is room for improvement in view of the possibility that the occupant may come into contact with the internal inflation airbag, when it has reached a high temperature.
[008] The present invention provides a side airbag device and a vehicle seat equipped with a side airbag device, which can achieve both improvements in the initial containment performance of an occupant and a reduction in the possibility of injury to the occupant.
[009] A first aspect of the invention provides a vehicle seat, equipped with a side airbag device, including: an inflation device arranged on an external side in a direction the width of the vehicle, relative to an installed side structure
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4/37 inside a lateral part of a backrest, the lateral part being located on an external side on the backrest in the direction of the width of the vehicle; an internal chamber housed inside the side, being configured to be inflated and arranged towards a part of an occupant on the external side, towards the width of the vehicle, when receiving a gas supply from the inflation device; an external chamber housed inside the side, being configured to be inflated and disposed towards the external side, towards the width of the vehicle and at the front side of the vehicle, relative to the inner chamber, when receiving gas supply; and a diffuser, housed inside the side and containing the inflation device, the diffuser being configured to supply gas to the inner chamber of a first supply orifice, formed in a peripheral wall of the diffuser, when the inflation device is activated.
[0010] In the first aspect, for example, when a side collision of the vehicle occurs, the inflation device, contained inside the diffuser, is activated and the gas from the inflation device is supplied to the inner chamber and the outer chamber. Therefore, the inner chamber and the outer chamber are inflated and arranged. In this case, the first supply port is formed in the peripheral wall of the diffuser, and, when the inflation device is activated, gas is supplied from the first supply port to the inner chamber. As the gas of the inflation device is thus controlled by the first supply orifice, formed in the diffuser, in order to flow into the inner chamber, the gas is supplied earlier to the inner chamber. Consequently, inflation and the internal chamber layout can be completed earlier.
[0011] The gas from the inflation device is supplied to the inner chamber through the first supply orifice, after being blown into the diffuser, which can prevent the outer chamber from reaching a high temperature.
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5/37 [0012] In the first aspect, the inner chamber and the outer chamber can be configured to be inflated and arranged towards the front side of the vehicle by tearing a backrest lining, so that a space between the occupant and a side part of a vehicle cabin, be filled with the inner chamber and the outer chamber inflated and arranged.
[0013] In this configuration, when inflating and disposing, the inner chamber and the outer chamber are inflated and arranged towards the front side of the vehicle by tearing the backrest lining. In this way, the inner chamber and the outer chamber fill the space between the occupant and the side of the vehicle cabin. It is, therefore, possible to obtain an initial containment of the occupant earlier by the inner chamber, which completes the inflation and disposition earlier, and to push the occupant towards the inside of the vehicle cabin by the outer chamber, which obtains a reaction force. side of the vehicle's cab.
[0014] In the first aspect, the first supply hole can be opened towards a part of the occupant, on the outside towards the width of the vehicle.
[0015] In this configuration, the first diffuser supply hole is opened towards the occupant part on the outside towards the width of the vehicle, so that the gas, supplied to the inner chamber, flows towards the occupant part on the outside towards the width of the vehicle. In this way, not only the static pressure of the gas, inside the inner chamber, but also the dynamic pressure of the gas flowing from the first supply hole towards the occupant part, on the outside towards the width of the vehicle, can be used to contain the occupant. Therefore, the occupant can be contained even in an initial state of inflation and disposition, in which the amount of gas in the inflation device is small.
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6/37 only.
[0016] Furthermore, in the configuration shown above, the diffuser can be configured to be foldable, and the diffuser and the inner chamber can be configured so that, when the diffuser has received the gas supply from the inflation device, the first The supply port is located further away from the front side of the vehicle than in the side frame, and gas, supplied to the inner chamber, is supplied to the outer chamber through a second supply orifice in the inner chamber.
[0017] In this configuration, the diffuser is configured to be foldable. When the diffuser has received the gas supply from the inflation device, the first supply port is located further away from the front side of the vehicle than the side frame, and the gas, supplied from the first supply port to the inner chamber, is supplied to the outer chamber through the second supply hole of the inner chamber. In this way, the gas from the inflation device can be supplied to the inner chamber, in order to bypass the lateral structure, which allows for inflation and an early arrangement of the inner chamber. Furthermore, the inner chamber is inflated and disposed of earlier than the outer chamber. These factors contribute to the initial containment of the occupier earlier.
[0018] Furthermore, in the configuration mentioned above, the external chamber can be divided by a partition in a front chamber, located on the front side of the vehicle, and a rear chamber, located on a rear side of the vehicle, the partition having a hole communication, and the inner chamber can be communicated with the rear chamber through the second supply orifice.
[0019] In this configuration, the external camera is divided into the front camera and the rear camera by the partition, having the communication hole, and the internal camera communicates with the rear camera through
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7/37 second supply hole. Consequently, the gas from the inflation device flows from the first supply port of the diffuser through the inner part of the rear chamber, from the second supply port, through the rear chamber, through the communication hole and through the front chamber, in that order. In this way, the gas from the inflation device is supplied to the inner chamber in order to surround the side structure, and is then supplied to the rear chamber and the front chamber. Therefore, the inner chamber can be inflated and arranged early to provide early containment for the occupant sooner. Furthermore, the rear camera is inflated and arranged earlier than the front camera, and then the rear camera comes into contact with the inner chamber and the side of the vehicle's cabin. The rear chamber thus obtains a reaction force from the side of the vehicle's cab early, and that reaction force is transmitted from the rear chamber to the inner chamber, which can further improve the occupant's initial containment performance.
[0020] Furthermore, in the configuration mentioned above, the diffuser can be provided inside the rear chamber.
[0021] In this configuration, the diffuser is provided inside the rear chamber, and, thus, the volume of the rear chamber can be reduced by the volume of the diffuser. Therefore, inflation and rear camera layout can be completed early.
[0022] Furthermore, in the configuration mentioned above, the diffuser can have a third supply hole, which provides communication between an internal part of the diffuser and an internal part of the rear chamber on the peripheral wall of the diffuser.
[0023] In this configuration, the third supply orifice, through which gas is supplied to the rear chamber, is formed in the peripheral wall of the diffuser, which allows inflation and the rear chamber layout to be completed early.
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8/37 [0024] Furthermore, in the configuration mentioned above, an opening area of the third supply hole may be smaller than an opening area of the supply hole.
[0025] In this configuration, the opening area of the third supply orifice is adjusted to be smaller than the opening area of the first supply orifice, and thus a large amount of gas from the inflation device, inside the diffuser. , is provided to the inner chamber. Therefore, the inner chamber is inflated and arranged early, which can improve the performance of the initial containment of the occupant. [0026] In the first aspect, when the external camera is divided by a partition in a front camera, located on the front side of the vehicle, and a rear camera, located on a rear side of the vehicle, the partition having a communication hole, and the inner chamber communicates with the rear chamber through the second supply hole, the inner chamber and the rear chamber can be configured so that the inner chamber and the rear chamber, both in an inflated and disposed state, fill a space between the occupant and a side part of a vehicle cabin.
[0027] In this configuration, the space between the occupant and the side of the vehicle cabin is filled with both the inner chamber and the rear chamber in the inflated and disposed state. In this case, the inner chamber and the rear chamber are inflated and arranged earlier than the front chamber and can obtain a reaction force from the side of the vehicle's cabin early, which can further improve the performance of the initial containment of the occupant. .
[0028] In the first aspect, the external chamber can be formed by a single chamber.
[0029] In this configuration, the external chamber is formed by a single chamber, and, thus, the manufacturing cost can be reduced.
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9/37 [0030] In the first aspect, one end of a strap can be mounted on the inner chamber, and the other end of the strap is mounted on the side frame.
[0031] In this configuration, one end of the strap is mounted on the inner chamber and the other end of the strap is mounted on the side frame. In this way, a positional displacement of the inner chamber, due to inflation and arrangement of the inner chamber, can be eliminated by the belt. Therefore, the inner chamber can be inflated and arranged with high probability towards the part of the occupant on the outside, towards the width of the vehicle.
[0032] In the first aspect, the diffuser can be configured to be located between a rear part of the outer chamber and a rear part of the inner chamber, when the outer chamber and the inner chamber are inflated and arranged.
[0033] In this configuration, the diffuser is configured to be located between the rear of the external chamber and the rear of the internal chamber, when the diffuser has been inflated and disposed, so that the gas flow surrounds the lateral structure. In this way, gas can be supplied to the inner chamber and the outer chamber, without the gas flow being impeded by the side structure. Therefore, it is possible to inflate and arrange the inner chamber towards the occupant early, and eliminate the need for processing the side structure with the gas supply being considered.
[0034] In the first aspect, the external chamber can be configured to retain a part of an occupant of normal construction from shoulder to waist, seen from the side of a vehicle, when the external chamber is inflated and arranged, and the internal chamber it can be configured to retain a rear part of the normally built occupant from shoulder to chest, as seen from the side of the vehicle, when the inner chamber is inflated and arranged.
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10/37 [0035] In this configuration, in the event of a side collision of the vehicle, a wide area of the normally constructed occupant, from shoulder to waist can be contained by the external camera. In addition, the rear part of the normal built occupant, from shoulder to chest, which is a part having a relatively high resistance value, can be contained early and effectively by the inner chamber, which is inflated and disposed of early.
[0036] In this case, the normal construction is based on the AM50 standard (representing 50% of an American male adult).
[0037] In the first aspect, the first supply hole can be an elongated hole having a longitudinal direction oriented substantially in an up and down direction of the seat.
[0038] In this configuration, the first supply hole, provided in the diffuser, is a long hole having the longitudinal direction oriented substantially in the up and down direction of the seat, and thus a relatively large opening area of the first hole. supply can be guaranteed. Consequently, a greater amount of gas from the inflation device, inside the diffuser, can be supplied to the inner chamber. Therefore, the inner chamber can be inflated and arranged earlier.
[0039] In the first aspect, when the external camera is divided by a partition in a front camera, located on the front side of the vehicle, and a rear camera, located on a rear side of the vehicle, the partition having a communication hole, and the inner chamber communicates with the rear chamber through the second supply orifice, and when the outer chamber is configured to contain a part of a normally constructed occupant from shoulder to waist, as seen from the side of a vehicle, when outer chamber is inflated and disposed, and the inner chamber is configured to contain a back of the normally constructed occupant from shoulder to chest, as seen
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11/37 of the side of the vehicle, when the inner chamber is inflated and arranged, a shoulder restraint part projecting towards the front of the vehicle, relative to a part of the partition in a lower part of the outer chamber, can be provided integrally in an upper part of the rear chamber, and the second supply orifice may include an upper supply orifice, provided in an upper side of the vehicle in a connecting part, between the inner chamber and the rear chamber, and a lower supply, provided on a lower side of the vehicle relative to the upper supply hole and from which an opening area can be adjusted to be smaller than an opening area of the upper supply hole.
[0040] In this configuration, the shoulder restraint part, which protrudes towards the front of the vehicle, relative to the part of the partition at the bottom of the external chamber, is provided integrally at the top of the rear chamber. In this way, the occupant's shoulder can be restrained more firmly by the shoulder restraint part, which is provided in a wide area in the forward and backward direction of the vehicle, and which, like the rear chamber, is inflated and arranged earlier. than the front camera. The second supply port includes the upper supply port, which is provided on the upper side of the vehicle at the connection part between the inner chamber and the rear chamber, and the lower supply port, which is arranged on the lower side of the vehicle relative to the upper supply orifice and whose opening area is adjusted to be smaller than the upper supply orifice opening area. Consequently, a greater amount of gas is supplied to the rear chamber of the upper supply port than of the lower supply port, so that the part of the rear chamber on the upper side of the vehicle, including the shoulder restraint part, is in
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12/37 flated and arranged earlier. Therefore, the occupant's shoulder relatively close to the side of the vehicle cab can be more adequately restrained.
[0041] In the first aspect, when the external camera is divided by a partition in a front camera, located in the front of the vehicle, and a rear camera, located in a rear part of the vehicle, the partition having a communication hole, and the inner chamber communicates with the rear chamber through the second supply hole, the inner chamber and the rear chamber can be formed by a single chamber.
[0042] In this configuration, the inner chamber and the rear chamber are formed by the single chamber, and in this way, the manufacturing cost can be reduced.
[0043] A second aspect of the invention provides a side airbag device, including: an inflation device configured to supply a gas; a diffuser that contains the inflation device; an inner chamber from which an inner part communicates with an inner part of the diffuser through a first supply orifice, formed in a peripheral wall of the diffuser; and an outer chamber from which an inner side communicates with the inner side of the inner chamber through a second supply hole formed in the inner chamber.
[0044] In this configuration, in the event of a side collision of the vehicle, the inflation device, housed inside the diffuser, is activated and the gas from the inflation device is supplied to the diffuser. Therefore, the diffuser is inflated and arranged. In this case, the first supply orifice is formed in the peripheral wall of the diffuser, and the second supply orifice is formed in the inner chamber. Consequently, when the inflation device is activated, gas is supplied from the first supply port to the inner chamber, and then that gas is supplied from the second supply port to the outer chamber. As the gas
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13/37 of the inflation device is thus controlled by the first supply orifice, formed in the diffuser, in order to flow into the inner chamber, the gas is supplied to the inner chamber early. Consequently, inflation and the layout of the inner chamber towards the inner side, towards the width of the vehicle, can be completed early. In this way, the performance of the initial containment of the occupant seated on the inside, towards the width of the vehicle, can be improved. [0045] The gas from the inflation device is supplied to the inner chamber through the first supply orifice, after being blown into the diffuser, which can prevent the inner chamber from reaching a high temperature.
BRIEF DESCRIPTION OF THE DRAWINGS [0046] The characteristics, advantages and technical and industrial importance of the exemplary embodiments of the invention will be described below with reference to the attached drawings, in which the similar numbers indicate similar elements, and in which:
[0047] Figure 1 is a side view of a vehicle seat equipped with a side airbag device, according to a first embodiment, showing a state in which an external chamber and an internal chamber have been inflated and arranged;
[0048] Figure 2 is an enlarged sectional plan view of the vehicle seat equipped with the side airbag device, according to the first embodiment, showing the state in which the outer chamber and the inner chamber were inflated and arranged;
[0049] Figure 3 is an enlarged sectional plan view, corresponding to Figure 2, of a vehicle seat equipped with a side airbag device, according to a second embodiment, showing a state in which an external chamber and a chamber internal were inflated and arranged;
[0050] Figure 4 is an enlarged sectional plan view, color
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14/37 responding to Figure 2, of a vehicle seat equipped with a side airbag device, according to a third embodiment, showing a state in which an outer chamber and an inner chamber have been inflated and arranged;
[0051] Figure 5 is an enlarged sectional plan view, corresponding to Figure 2, of a vehicle seat equipped with a side airbag device, according to a fourth embodiment, showing a state in which an external chamber and a chamber internal were inflated and arranged;
[0052] Figure 6 is an enlarged sectional plan view showing part Z in Figure 5;
[0053] Figure 7 is an enlarged sectional plan view, corresponding to Figure 2, of a vehicle seat equipped with a side airbag device, according to a fifth embodiment, showing a state in which an external chamber and a chamber internal were inflated and arranged; and [0054] Figure 8 is an enlarged sectional plan view, corresponding to Figure 2, of a vehicle seat equipped with a side airbag device, according to a modified example of the fifth embodiment, showing a state in which an external chamber and an inner chamber were inflated and arranged.
DETAILED DESCRIPTION OF THE ACCOMPLISHMENTS
First embodiment [0055] Next, a vehicle seat 10, equipped with a side airbag device, according to an embodiment of the present invention, (hereinafter abbreviated as vehicle seat 10) will be described based on the Figures 1 and 2. The arrows FR, UP and OUT, shown as necessary in the drawings, indicate a direction towards a front side of the vehicle (forward direction), a direction towards an upper side of the vehicle, and a direction towards
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15/37 from an external side in a direction the width of the vehicle. Unless otherwise indicated, the directions in the description shown below, referred to simply as the front and rear sides, the right and left sides and the bottom and top sides respectively indicate the front and rear sides in a forward direction and to the rear of the vehicle, the right and left sides in a direction to the left and right of the vehicle (direction of the vehicle width) and the bottom and top sides in an up and down direction of the vehicle.
Configuration [0056] As shown in Figure 1, the vehicle seat 10, according to one embodiment, consists of a main seat body 12 and a side airbag device 14. Each component will be described in detail below.
Main seat body 12 configurations [0057] The main seat body 12 has a seat cushion 15, on which an occupant P sits, a backrest 16, which is coupled to a rear end of seat cushion 15 and supports the rear of occupant P, and a headrest 18, which is coupled to an upper end of the backrest 16 and supports the head of occupant P.
[0058] In this embodiment, a forward and backward direction, a left and right direction (width direction) and an up and down direction of the main seat body 12 and the backrest 16 coincide, respectively, with the forward and backward direction, the left and right direction (width direction) and the vehicle's up and down direction. In Figures 1, 2, 5, 7 and 8, a crash test figure P is seated on the main seat body 12 instead of the actual occupant. For example, the P doll is AM50 (representing 50% of an American adult male) of
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World Side Impact Dummy (WorldSID). To make the description easy to understand, the doll P will be referred to below as the occupant P.
[0059] As shown in Figure 1, Figure 2, etc., the backrest 16 includes a metal backrest structure 20, which is a structuring element, and a back spring (not shown) mounted on the backrest structure 20. The structure backrest 20 and the backrest spring constitute a structuring part 24 of the backrest 16. The backrest 16 includes a backrest cushion 26 (see Figure 2; not shown in the other drawings) placed on the structuring part 24, and a seat cover 28 (see Figure 2; not shown in the other drawings) as a covering covering the back cushion 26.
[0060] The abutment structure 20 includes: an external side structure 30 provided within a lateral part 16A, which is a lateral part of the abutment 16 on the external side in the direction of the width of the vehicle; an internal side structure 31 (see Figure 2) provided within a lateral part of the backrest 16 on the internal side in the direction of the vehicle width; an upper frame (not shown) connecting the upper ends of the outer side frame 30 and the inner side frame 31 between them, and a lower frame (not shown) connecting the lower ends of the outer side frame 30 and the inner side frame 31 between them towards the width of the seat. The outer side structure 30 can be considered as an example of the side structure according to the present invention.
[0061] As shown in Figure 2, the external side structure 30 is composed of a side wall 30A, a front flange 30B and a rear flange 30C. The side wall 30A extends along the backrest 16 in the forward and backward direction, as seen from a height direction of the backrest 16. The front flange 30B extends from a front end of the side wall 30A towards the inner side, towards the width of the seat, and towards the rear side of the seat. The traPetition flange 870180126869, from 09/05/2018, p. 61/143
17/37 seiro 30C extends from a rear end of the side wall 30A towards the inner side towards the width of the seat, and is curved to a leading end side obliquely towards the front side of the seat. Except for being symmetrical with the external lateral structure 30, in the left and right direction, the internal lateral structure 31 has the same configuration as the external lateral structure 30.
[0062] The back cushion 26 is formed by a foamed body, such as polyurethane foam, and is composed of a central part of cushion 26A and a pair of side parts of right and left cushions 26B. The central cushion part 26A is installed on a central side of the backrest 16 in the width direction and is supported by the back spring of the rear side of the seat. The left and right cushion side parts 26B all have a substantially C-shaped cross section and, respectively, contain the outer side structure 30 and the inner side structure 31. The side parts of cushions 26B are formed so that they extend further farther towards the front side of the seat than the central part of cushion 26A and provide lateral support for occupant P.
[0063] The seat cover 28 includes a front cover 36 covering the central cushion part 26A on the front side of the seat, the front side covers 38 covering the seat side parts 26B on the front side of the seat, the side covers 40 covering the seat side portions 26B on the outer side towards the width of the seat and the rear seat side, and a rear liner 42 covering the central cushion part 26A on the rear seat side.
[0064] The front side liners 38 are all sewn with the front liner 36 in a seam 44 and sewn with the side liner 40 in a seam 46. The side liners
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18/37 are all sewn with the backing 42 in a seam 48. The seam 46 between the front side lining 38 and the side lining 40 is located on a front edge 16A1 (called the side ridge) of the side 16A. This seam 46 is configured to be broken along with the side pad 26B, when an outer chamber 62, to be described below, is inflated and arranged.
Configuration of the side airbag device 14 [0065] As shown in Figure 1 and Figure 2, the side airbag device 14 includes a side airbag 50, an inflation device 22 and a diffuser 53. The side airbag 50 is inflated and arranged upon receiving a gas supply from the inflation device 22 (the state shown in Figures 1 and 2). Although this is not shown, the side airbag 50, the diffuser 53 and the inflation device 22 are normally housed as an airbag module 54 in a folded state within the side part 16A. In the description presented below, a forward and backward direction and an up and down direction, described in relation to the side airbag 50, indicate these directions in the inflated and disposed state of the side airbag 50, and substantially coincide with the direction for back and forth and the up and down direction of the backrest 16.
[0066] The inflation device 22 is a so-called cylindrical inflation device, which has a columnar shape. The inflation device 22 is installed on the outer side of the side wall 30A of the outer side structure 30 in the direction of the seat width (its outer side in the direction of the vehicle width), in a position such that an axial direction of the inflation device 22 is oriented along the direction of the backrest height 16. A pair of lower and upper studs 52A protrude from an outer circumference of the inflation device 22 towards the inner side towards the width of the seat.
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Studs 52A extend across side wall 30A and all have a nut 56 attached to a lead end side. In this way, the inflation device 22 is mounted (secured and fixed) to the external side structure 30. Alternatively, a configuration can be adopted in which the prisoners, which project from the outer circumference of the inflation device 22 towards the rear side of the vehicle, are coupled with nuts by extension on the front side of the vehicle by arms, etc., fixed on the external side structure 30 (this configuration is called lateral, rear fixation).
[0067] Several gas blow openings (not shown), arranged in a circumferential direction of the inflation device 22, are formed in an upper end part or a lower end part (in this case, the upper end part) from the inflation device 22. When the inflation device 22 is fired (activated), a gas is blown radially from these gas blow openings. As shown in Figure 1, a side collision ECU 58, installed in the vehicle, is electrically connected to the inflation device 22. A side collision sensor 60, which detects a side collision, is electrically connected to the side collision ECU 58. A Side collision ECU 58 is configured to trigger inflation device 22 by detecting (inevitability of) a side collision based on a signal from the side collision sensor 60. In a case in which a collision prediction sensor (pre- collision), which predicts (anticipates) a side collision, is electrically connected to the side collision ECU 58, the inflation device 22 can be configured to be triggered when the side collision ECU 58 predicts a side collision based on a signal from the collision prediction sensor.
[0068] Diffuser 53 is made of a fabric material in the form of a bag, containing the upper end part of the inflation device 22. Diffuser 53 has through holes (not shown) for
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20/37 secured to a peripheral wall 53A, and prisoners 52A extend through these through holes. Because they are attached together with the inflation device 22 by prisoners 52A, the diffuser 53 is attached and fixed to the external side of the side wall 30A of the external lateral structure 30. In a state in which the diffuser 53 was inflated and disposed, upon receiving a gas supply of the inflation device 22, a front part 53F of diffuser 53 is located farther on the front side of the seat than the front flange 30B of the outer side structure 30.
[0069] A first supply orifice 55 is formed in the peripheral wall 53A of diffuser 53. The first supply orifice 55 is a long bore having a longitudinal direction oriented substantially in the up and down direction, and an internal part of the diffuser 53 communicates with an inner part of an inner chamber 64, to be described below, through the first supply orifice 55. The first supply orifice 55 opens towards a part of the occupant P on the outer side towards the width of the vehicle ( that is, in an inclined direction with the direction towards the front side of the vehicle from the direction towards the inside towards the width of the vehicle), and, when the diffuser 53 has been inflated and disposed, the first supply hole 55 is located farther on the front side of the seat than the front flange 30B of the outer side frame 30.
[0070] The side airbag 50 is composed of the outer chamber 62 and the inner chamber 64. The inner chamber 64 is inflated within the side 16A as the gas of the inflation device 22, inside the diffuser 53, is supplied to the inner chamber 64 through the first supply orifice 55, formed in the peripheral wall 53A of the diffuser 53. The outer chamber 62 is inflated and arranged towards the front side of the side seat 16A when receiving a gas supply from the second supply orifice 67 , formed in a connecting part
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21/37 between the outer chamber 62 and the inner chamber 64, and the inflated and disposed outer chamber 62 is located in a space between the occupant P and a side part of a vehicle body (in this case, at least one door trim) 63 of a side door and a B 65 pillar trim shown in Figure 2).
[0071] The outer chamber 62 is formed of a bag-shaped fabric material and, when viewed in an inflated state and arranged from a side view, as shown in Figure 1, has a substantially rectangular shape elongated along the direction of the backrest height 16. The outer chamber 62 is formed so that it is large enough to contain the shoulder S, the chest C, the abdomen B and the waist L of the occupant P.
[0072] The outer chamber 62 is divided into a front chamber 72 and a rear chamber 74 by a chain lock 70 (divider fabric), as a partition provided inside the outer chamber 62. The chain lock 70 is formed from the same material fabric of the outer chamber 62, having an elongated band shape. An edge on the long side of the chain lock 70 is sewn into a seam T1 (see Figure 2) in a base fabric 66, forming a part of the outer chamber 62 on the outer side in the direction of the vehicle's width, while the edge on the long side it is sewn in a T2 seam (see Figure 2) in a base fabric 68, forming a part of the outer chamber 62 on the inner side in the direction of the vehicle width. [0073] The chain lock 70 is adjusted to have an inverted L shape in the inflated and disposed state of the outer chamber 62, as seen from the side of the vehicle. Specifically, a lower end portion of the chain latch 70 is angled so that it extends towards the rear side, as the chain latch 70 extends from a lower end of the outer chamber 62 towards the upper side, and an intermediate part of the
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22/37 chain 70, in the upward and downward direction, extends towards the height of the backrest 16, so as to extend substantially along the front edge (called the lateral ridge) of the side part 16A of the backrest 16. A part the upper end of the chain latch 70 is inclined to extend towards the rear side, as the chain latch 70 extends from a front end of the outer chamber 62 towards the lower side. Due to this shape of the chain lock 70, a shoulder restraint part 75 projecting towards the front side is provided integrally in an upper part 74U of the rear chamber 74.
[0074] The chain lock 70 has internal ventilation holes 76 as communication holes. The internal ventilation holes 76 include an upper internal ventilation hole 76A and a lower internal ventilation hole 76B. Specifically, the upper internal ventilation hole 76A is formed at the sloping upper end part of the chain lock 70, and the lower internal ventilation hole 76B is formed at the lower end part of the chain lock 70 extending in the upward direction and down. An inner part of the front chamber 72 and an inner part of the rear chamber 74 communicate with each other through the upper internal ventilation hole 76A and the lower internal ventilation hole 76B. As the gas, inside the inner chamber 64, is supplied to the rear chamber 74, of the configuration mentioned above, through the second supply holes 67, which will be described below, the rear chamber 74 is inflated and arranged towards the outside, in the direction of the seat width, and the front side of the seat, relative to the inner chamber 64, by breaking the seam 46 of the seat cover 28 on the side 16A. Then, the front chamber 72, of the configuration mentioned above, is inflated and arranged towards the front side of the seat, as the gas, inside the rear chamber 74, is supplied to the front chamber 72 through the vent hole.
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23/37 upper internal connection 76A and the lower internal ventilation hole 76B.
[0075] In this inflated and disposed state of the outer chamber 62, the front chamber 72 of the outer chamber 62 contains a side of the front part of the occupant P from the shoulder S to the waist L, while the rear chamber 74 contains a side of the back of the occupant P occupant P from shoulder S to waist L.
[0076] The inner chamber 64 is formed in the form of a bag by the same fabric material as that of the outer chamber 62. The dimensions of the inner chamber 64, in the up and down direction and in the forward and backward direction, are adjusted so that they are small enough, compared to those of the outer chamber 62, and the inner chamber 64 is formed so that it has a volume sufficiently smaller than that of the outer chamber 62.
[0077] As shown in Figure 2, the inner chamber 64 projects from the front 53F of the diffuser 53 towards the inner side of the outer lateral structure 30, towards the seat width, by passing through the front side of the front flange seat 30B. The through holes (not shown) are formed in a portion of a rear portion 64 of the inner chamber 64, corresponding to a portion of the side wall 30A on the inner side in the direction of the width of the seat. Prisoners 52A extend through these through holes, and the inner chamber 64 is secured and secured to the inner side of the side wall 30A of the outer side structure 30 when it is attached together when the inflation device 22 is attached.
[0078] The second supply holes 67 are formed in a part of the inner chamber 64, where the inner chamber 64 is connected to the rear chamber 74 of the outer chamber 62. The inner part of the inner chamber 64 communicates with the inner part of the rear chamber 74 through the second supply holes 67. The second holes
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Supply 24/37 67 includes an upper supply hole 67A, which is provided on the upper side of the connecting portion, between the inner chamber 64 and the rear chamber 74, and a lower supply hole 67B, which is provided on the lower side of the vehicle, relative to the upper supply hole 67A (see Figure 1). The opening area of the lower supply port 67B is adjusted to be less than the opening area of the upper supply port 67A.
[0079] The inner chamber 64 is installed so that it faces the rear side of occupant P from shoulder S to chest C, from the outside towards the width of the seat, as seen in the side view of the seat shown in Figure 1. Thus, the inner chamber 64 is arranged in the vicinity of a side surface 16A on the inner side, in the direction of the vehicle width, as seen in the side view of the seat. As shown in Figure 2, as the gas from the inflation device 22, inside the diffuser 53, is supplied to the inner chamber 64, of the configuration mentioned above, through the first supply orifice 55, the inner chamber 64 is inflated by bursting of the seam 46 of the seat cover 28 on the side 16A. The inflated inner chamber 64 is inflated and arranged towards the inside, towards the seat width (towards the occupant part P on the outside towards the vehicle width) by receiving a reaction force from the front flange 30B of the outer lateral structure 30. In this way, the rear side of the occupant P, from the shoulder S to the chest C, is contained by the inner chamber 64. The diffuser 53 is configured so as to be located between a rear 62R of the outer chamber 62 and the rear 64R of the inner chamber 64, when the diffuser 53 has been inflated and disposed. The inner chamber 64 can be any chamber that can contain at least the rear side of the chest C (one side of the back of the ribs).
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25/37 [0080] Next, as the gas drains into the side airbag 50, when the inflation device 22 is activated, it will be described using Figure 2. To make the description easy to understand, Figure 2 shows the state in which the diffuser 53, the inner chamber 64 and the outer chamber 62 have been inflated and arranged.
[0081] In the side airbag device 14 of the configuration mentioned above, the upper end part of the inflation device 22 is contained within the diffuser 53. Therefore, when the inflation device 22 is activated, gas is first supplied to the diffuser 53 Consequently, diffuser 53 is inflated.
[0082] Next, part of the gas supplied to the diffuser 53 is supplied to the inner chamber 64 through the first supply orifice 55. Therefore, the inner chamber 64 is inflated.
[0083] Next, part of the gas supplied to the inner chamber 64 is supplied to the rear chamber 74 of the outer chamber 62 through the second supply holes 67. Therefore, the rear chamber 74 is inflated.
[0084] Next, part of the gas supplied to the rear chamber 74 is supplied to the front chamber 72 via the upper internal ventilation hole 76A and the lower internal ventilation hole 76B. Therefore, the front chamber 72 is inflated. As a result of the gas flowing as described above, the inner chamber 64 has the highest internal pressure, the back chamber 74 has the second highest internal pressure and the front chamber 72 has the lowest internal pressure.
Execution and effects of the first embodiment [0085] In the following, the execution and effects of that embodiment will be described.
[0086] In this embodiment, for example, when a side collision of the vehicle occurs, the inflation device 22, contained within the diffuser 53, is activated and the gas of the inflation device 22 is supplied to the
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26/37 inner chamber 64 and outer chamber 62. Therefore, inner chamber 64 and outer chamber 62 are inflated and arranged. In this case, the first supply port 55 is formed in the peripheral wall 53A of the diffuser 53, and, when the inflation device 22 is activated, gas is supplied from the first supply port 55 to the inner chamber 64. As the gas of the device inflation rate 22 is thus controlled by the first supply orifice 55, formed in the diffuser 53, in order to flow to the inner chamber 64, the gas is supplied early to the inner chamber 64. Therefore, inflation and the arrangement of the inner chamber 64 can be completed early.
[0087] The gas of the inflation device 22 is supplied to the inner chamber 64 through the first supply orifice 55, after being blown into the diffuser 53, disposed on the external side of the external lateral structure 30, in the direction of the vehicle width, it can prevent the inner chamber 64 from reaching a high temperature. In this way, the side airbag device 14 and the vehicle seat 10 equipped with the side airbag device 14 according to the present invention can both achieve improvement in the initial containment performance of the occupant P and the reduction in the possibility of injury to occupant P.
[0088] When inflation and arrangement, the inner chamber 64 and the outer chamber 62 are inflated and arranged towards the front side of the vehicle by breaking the seam 46 of the seat cover 28 of the backrest 16. Thus, the inner chamber 64 and the outer chamber 62 fill the space between the occupant P and at least one of the door trim 63 and the B pillar trim 65, as the side of the vehicle cab. It is therefore possible to obtain an initial containment of occupant P earlier by the inner chamber 64, which completes inflation and disposition early, and pushes the occupant P towards the inside of the vehicle cabin by the outer chamber 62, which obtains
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27/37 a reaction force of at least one door finish 63 and the B pillar trim 65. Figure 2 shows a configuration in which the space between occupant P and door finish 63 is not filled with the inner chamber 64 and outer chamber 62, but another configuration can be adopted in which the space between occupant P and door trim 63 is filled with inner chamber 64 and outer chamber 62, as far as the vehicle seat 10 is slid forward or backward, or is reclined.
[0089] Once the first supply port 55 of the diffuser 53 opens towards the occupant part P on the outside, towards the width of the vehicle, the gas, supplied to the inner chamber 64, flows towards the part occupant P on the outside, in the direction of the vehicle width. In this way, not only the static pressure of the gas, inside the inner chamber 64, but also the dynamic pressure of the gas flowing from the first supply orifice 55 towards the part of the occupant P on the outside, towards the width of the vehicle, can be used to contain occupant P. Therefore, occupant P can be contained even in an initial state of inflation and disposition, in which the amount of gas in the inflation device 22 is small.
[0090] When the diffuser 53 has received gas supply from the inflation device 22, the first supply port 55 is located farther on the front side of the vehicle than the external side structure 30, and the gas, supplied from the first supply port supply 55 for the inner chamber 64, the outer chamber 62 is supplied through the second supply holes 67 of the inner chamber 64. In this way, the gas from the inflation device 22 can be supplied to the inner chamber 64, in order to surround the structure outer side 30, which allows inflation and early disposal of the inner chamber 64. Furthermore, the inner chamber 64 is inflated and disposed earlier than the outer chamber
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28/37 na 62. These factors contribute to the early containment of occupier P.
[0091] The outer chamber 62 is divided into the front chamber 72 and the rear chamber 74 by the chain lock 70, having the internal ventilation holes 76, and the inner chamber 64 communicates with the rear chamber 74 through the second supply holes 67 Consequently, gas from the inflation device 22 flows from the first supply port 55 of diffuser 53 into the inner chamber 64, through the second supply ports 67, through the rear chamber 74, through the internal ventilation holes 76 and through the front chamber 72 , in that order. In this way, the gas from the inflation device 22 is supplied to the inner chamber 64, in order to surround the outer side structure 30, and then it is supplied to the rear chamber 74 and the front chamber 72. Therefore, the inner chamber 64 can be inflated and arranged early, to provide an early containment of the occupant P. The rear chamber 74 is inflated and arranged earlier than the front chamber 72, and the rear chamber 74 contacts the inner chamber 64 and at least one of the door 63 finish and B 65 pillar trim. Rear chamber 74 thus obtains a reaction force of at least one from door 63 finish and B 65 pillar trim early, and that reaction force is transmitted from the rear chamber 74 to the inner chamber 64, can further improve the initial containment performance of occupant P.
[0092] The space between occupant P and at least one of the door trim 63 and the B pillar trim 65 is filled with the inner chamber 64 and the rear chamber 74, both in the inflated and disposed state. In that case, the inner chamber 64 and the rear chamber 74 are inflated and disposed earlier than the front chamber 72, and can obtain a reaction force of at least one of the door finish 63 and the B pillar trim 65 early, which can further improve the
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29/37 initial containment performance of occupant P.
[0093] Diffuser 53 is configured to be located between the rear 62R of the outer chamber 62 and the rear 64R of the inner chamber 64, when the diffuser 53 has been inflated and disposed, so that the gas flow surrounds the side structure external 30. In this way, the gas can be supplied to the inner chamber 64 and the outer chamber 62 without the gas flow being impeded by the outer lateral structure 30. It is, therefore, possible to inflate and arrange the inner chamber 64 towards the occupant P early, and eliminate the need to process the external side structure 30 with the gas supply considered.
[0094] In the event of a vehicle side collision, a large area of occupant P, from shoulder S to waist L, can be contained by the outer chamber 62. Furthermore, the rear of occupant P, from shoulder S to chest C, which is a part having a relatively high resistance value, can be contained early and effectively by the inner chamber 64, which is inflated and disposed of early.
[0095] The first supply orifice 55, provided in the diffuser 53, is formed as a long hole having the longitudinal direction oriented substantially in the up and down direction of the seat, and thus a relatively large opening area of the first supply hole can be stuck. Consequently, a greater amount of gas from the inflation device 22, inside the diffuser 53, can be supplied to the inner chamber 64. Therefore, the inner chamber 64 can be inflated and disposed of earlier.
[0096] As shown in Figure 1, the shoulder restraint part 75, which projects towards the front side of the vehicle relative to a part of the chain lock 70, in a lower part of the outer chamber 62, is provided integrally in the upper part 74U of the rear camera 74. In this way, the shoulder S of the occupant P can be contained more firmly by the shoulder restraint part 75, which is
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30/37 provided by a large area in the forward and backward direction of the vehicle and, like the rear camera 74, is inflated and arranged earlier than the front camera 72. The second supply holes 67 include the upper supply 67A, which is provided on the upper side of the vehicle, at the connection part between the inner chamber 64 and the rear chamber 74, and the lower supply orifice 67B, which is provided on the lower side of the vehicle relative to the upper supply orifice 67A, and of which the opening area is adjusted to be less than the opening area of the upper supply hole 67A. Consequently, a greater amount of gas is supplied to the rear chamber 74 from the upper supply port 67A than from the lower supply port 67B, so that the part of the rear chamber 74 on the upper side of the vehicle, including the containment part of shoulder 75, is inflated and arranged earlier. Therefore, the shoulder S of occupant P, relatively close to the side of the vehicle cab, can be more adequately restrained. Second embodiment [0097] Next, a vehicle seat 80, equipped with a side airbag device, according to a second embodiment of the present invention, will be described using Figure 3. Those components that are the same as in the first embodiment will be indicated by the same reference signs, and their description will be omitted.
[0098] As shown in Figure 3, vehicle seat 80, equipped with a side airbag device 82, according to the second embodiment, has the same basic configuration as that of the first embodiment, and is characterized by the fact that a outer chamber 84 is a single chamber.
[0099] Specifically, the outer chamber 84 has a bag shape, and, when seen in the inflated and disposed state on the side, with
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31/37 m shown in Figure 1, it has a substantially rectangular shape, elongated along the direction of the height of the backrest 16. The outer chamber 84 is a single chamber formed so as to be large enough to contain the shoulder S, the chest C , the abdomen B and the waist L of the occupant P.
Execution and effects of the second embodiment [00100] Next, the execution and the effects of that embodiment will be described.
[00101] The configuration mentioned above can produce effects similar to those of the first embodiment, since the vehicle seat 80 has the same configuration as the vehicle seat 10, equipped with the side airbag device of the first embodiment, except that the external chamber 84 is a single chamber as described above. Furthermore, with the outer chamber 84 being a single chamber, this configuration can reduce the manufacturing cost.
Third embodiment [00102] Next, a vehicle seat 80, equipped with a side airbag device, according to a third embodiment of the present invention, will be described using Figure 4. Those components that are the same as in the first embodiment will be indicated by the same reference signs, and their description will be omitted.
[00103] As shown in Figure 4, vehicle seat 86, equipped with a side airbag device 88, according to the third embodiment, has the same basic configuration as that of the first embodiment, and is characterized by the fact that cameras , corresponding to the inner chamber 64 and the rear chamber 74 of the first embodiment, are formed by a single chamber.
[00104] Specifically, a side airbag 90 is composed of an inner chamber 92 and a front chamber 94. As the gas
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32/37 of the inflation device 22, inside the diffuser 53, is supplied to the inner chamber 92 through the first supply orifice 55, formed in the peripheral wall 65A of the diffuser 53, the inner chamber 92 is inflated and arranged towards the outer side of the seat by breaking the seam 46 of the seat cover 28 on the side 16A, and is located in the space between the occupant P (see Figure 2) and at least one of the door trim 63 and the B pillar trim 65. Thus , the inner chamber 92 is a chamber corresponding to the inner chamber 64 and the rear chamber 74 of the first embodiment.
[00105] The front chamber 94 is inflated and arranged towards the front side of the seat of the side part 16A when receiving gas supply from an internal ventilation hole 96, formed in a limit with the internal chamber 92, in order to be located in the space between the occupant P, on one side, and the door trim 63 of the side door and the B 65 pillar trim, on the other side.
Execution and effects of the third embodiment [00106] Next, the execution and the effects of that embodiment will be described.
[00107] This configuration can produce effects similar to those of the first embodiment, since the vehicle seat 86 has the same configuration as the vehicle seat 10, equipped with the side airbag device of the first embodiment, except that the cameras, corresponding to the inner chamber 64 and rear chamber 74 of the first embodiment, are formed by the single inner chamber 92, as described above. Furthermore, with the chambers, corresponding to the inner chamber 64 and the rear chamber 74 of the first embodiment, being formed by the single inner chamber 92, this configuration can reduce the manufacturing cost.
Fourth embodiment [00108] Next, a vehicle seat 98, equipped with a dis
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33/37 positive side airbag, according to a fourth embodiment of the present invention, will be described using Figures 5 and 6. Those components that are the same as in the first embodiment will be indicated by the same reference signs, and their description will be omitted.
[00109] As shown in Figure 5, vehicle seat 98, equipped with a side airbag device 100, according to the fourth embodiment, has the same basic configuration as that of the first embodiment, and is characterized by the fact that a strap 102 is mounted on the inner chamber 64.
[00110] Specifically, as shown in Figure 6, an end 104 of the strap 102, having a longitudinal direction oriented in the forward and backward direction, is mounted on the rear 64R of the inner chamber 64. A through hole (not shown) it is formed on the side of the other end 106 of the strap 102, and the stud 52A extends through this through hole. Because it is attached together when the inflation device 22 is attached, the other end 106 of the strap 102 is attached and fixed to the inner side of the side wall 30A of the outer side structure 30. In this way, the inner chamber 64 is secured and fixed on the inner side of the side wall 30A of the outer side structure 30 by the strap 102.
Execution and effects of the fourth embodiment [00111] Next, the execution and the effects of that embodiment will be described.
[00112] This configuration can produce effects similar to those of the first embodiment, since the vehicle seat 98 has the same configuration as the vehicle seat 10, equipped with the side airbag device 14 of the first embodiment, except that the strap 102 is mounted on the inner chamber 64, as described above. One end 104 of the strap 102 is mounted on the inner chamber 64, and the other end
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34/37 end 106 of brace 102 is mounted on the outer side frame
30. In this way, a positional displacement of the inner chamber 64, due to inflation and arrangement of the inner chamber 64, can be eliminated by the strap 102. Therefore, the inner chamber 64 can be inflated and arranged with a high probability towards the occupant part P on the outside, in the direction of the vehicle width (see Figure 5). Fifth embodiment [00113] Next, a vehicle seat 108, equipped with a side airbag device, according to a fifth embodiment of the present invention, will be described using Figure 7. Those components that are the same as in the first embodiment will be indicated by the same reference signs, and their description will be omitted.
[00114] As shown in Figure 7, vehicle seat 108, equipped with a side airbag device 110, according to the fifth embodiment, has the same basic configuration as that of the first embodiment, and is characterized by the fact that the diffuser 53 is contained within the rear chamber 74 of the outer chamber 62.
[00115] Specifically, the diffuser 53 is contained within the rear chamber 74 of the outer chamber 62. More specifically, a rear end 66A of the basic fabric 66, forming the part of the outer chamber 62 on the outer side, in the direction of the vehicle width, it is sewn on the rear 53R of diffuser 53, and thus diffuser 53 is provided on the rear side within the rear chamber 74.
Execution and effects of the fifth embodiment [00116] Next, the execution and the effects of that embodiment will be described.
[00117] This configuration can produce effects similar to those of the first embodiment, since vehicle seat 108 has the same configuration as vehicle seat 10, equipped with the device.
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35/37 side airbag positive 14 from the first embodiment, except that the diffuser 53 is contained within the rear chamber 74 of the outer chamber 62. Furthermore, with the diffuser 53 being provided within the outer chamber 74, the volume of the rear chamber 74 can be reduced by the volume of the diffuser 53. Therefore, inflation and the arrangement of the external chamber 74 can be completed early.
Modified examples [00118] In the fifth embodiment, the gas from the inflation device 22, inside the diffuser 53, is supplied by the first supply orifice 55 to the inner chamber 64, and then the gas, within the inner chamber 64, is supplied to the chamber rear 74 by the second supply holes 67. However, the present invention is not limited to that example. For example, as shown in Figure 8, a third supply port 112, which provides communication between the inside of the diffuser 53 and the inside of the rear chamber 74, can be formed on the peripheral wall 53a of the diffuser 53. In this way, the inflation and rear camera layout can be completed early. The opening area of the third supply port 112 can be adjusted to be smaller than the opening area of the first supply port 55. In this case, a large amount of gas from the inflation device 22, inside the diffuser 53, is provided to the inner chamber 64. Consequently, the inner chamber 64 is inflated and disposed of early, which can improve the performance of the initial containment of the occupant P. Furthermore, the initial containment performance can be regulated by adjusting the gas flow by adjusting each of the opening area of the first supply hole 55 and the opening area of the third supply hole 112.
[00119] In this embodiment, the diffuser 53 is contained within the rear chamber 74 of the outer chamber 62, but the present invention is not limited to that example. In contrast, diffuser 53 can be
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36/37 provided within the inner chamber 64.
[00120] In the first to fifth embodiments, the outer chambers 62, 84 and the inner chambers 64, 92 are configured to be inflated and arranged towards the front side of the vehicle by breaking the seam 46 of the seat cover 28 of the backrest 16. However, the present invention is not limited to that configuration. These chambers can be configured to be inflated and arranged by breaking another seam other than the seam 46 of the seat cover 28. Furthermore, the inner chambers 64, 92 can be configured to be inflated and arranged inside the side part 16A of the backrest 16.
[00121] The first supply hole 55 of diffuser 53 opens towards the occupant part P on the outside, towards the width of the vehicle, but the present invention is not limited to this example. The first supply hole 55 can open in another direction.
[00122] The first supply port 55 of diffuser 53 is located farther on the front side of the vehicle than the external side structure 30, when diffuser 53 has been inflated and disposed, but the present invention is not limited to that example. The first supply orifice 55 can be located in another position, for example, substantially in the same position as that of the front flange 30B of the external side structure 30, in the forward and backward direction of the seat.
[00123] The first supply port 55 of diffuser 53 is a long hole, with the longitudinal direction oriented substantially in the up and down direction of the seat, but the present invention is not limited to this example. The first supply orifice 55 may, in contrast, be substantially circular in shape, and several first supply orifices 55 may be provided.
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37/37 [00124] The outer chamber 84 of the second embodiment and the inner chamber 92 of the third embodiment are provided adjacent the diffuser 53, but the present invention is not limited to that example. The diffuser 53 can be provided inside the outer chamber 84 and the inner chamber 92.
[00125] The first supply hole 55 of the diffuser 53 opens towards the occupant part P on the outside, towards the width of the vehicle, but the present invention is not limited to this example. As long as the gas flows towards the occupant P, another configuration can be adopted, in which, for example, a flow control part is provided.
[00126] It should be understood that the present invention is not limited to the embodiments presented above, but can also be implemented in other embodiments, with several modifications made within the scope of the essence of the invention.

权利要求:
Claims (19)
[1]
1. Vehicle seat (10) equipped with a side airbag device (14), characterized by the fact that it comprises:
an inflation device (22) arranged on an external side in a direction of the width of the vehicle, relative to a lateral structure (30) installed inside a lateral part (16A) of a backrest (16), the lateral part (16A) being located on an external side on the backrest (16) in the direction of the vehicle width;
an internal chamber (64) housed inside the side (16A), being configured to be inflated and arranged towards a part of an occupant on the external side, towards the width of the vehicle, when receiving a gas supply from the device inflation (22);
an external chamber (62) housed inside the side (16A), being configured to be inflated and arranged towards the external side, towards the width of the vehicle and at the front side of the vehicle, relative to the inner chamber (64), when receiving gas supply; and a diffuser (53), housed inside the side (16A) and containing the inflation device (22), the diffuser (53) being configured to supply gas to the inner chamber (64) from a first supply orifice (55 ), formed in a peripheral wall of the diffuser (53), when the inflation device (22) is activated.
[2]
2. Vehicle seat (10) equipped with a side airbag device (14) according to claim 1, characterized by the fact that the inner chamber (64) and the outer chamber (62) are configured to be inflated and arranged towards the front side of the vehicle by tearing a backrest cover (16), so that a space between the occupant (P) and a side of a vehicle cabin is filled with the inner chamber (64) and the external camera
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2/6 in (62) inflated and disposed.
[3]
3. Vehicle seat (10) equipped with a side airbag device (14) according to claim 1 or 2, characterized in that the first supply hole (55) opens towards a part of the occupant (P) on the outside, in the direction of the vehicle width.
[4]
4. Vehicle seat (10) equipped with a side airbag device (14) according to claim 3, characterized by the fact that:
the diffuser (53) is configured to be foldable; and the diffuser (53) and the inner chamber (64) can be configured so that when the diffuser (53) has received the gas supply from the inflation device (22), the first supply port (55) is located further on the front side of the vehicle than on the side frame (30), and gas, supplied to the inner chamber (64), is supplied to the outer chamber (62) through a second supply port (67) of the inner chamber ( 64).
[5]
5. Vehicle seat (10) equipped with a side airbag device (14), according to claim 4, characterized by the fact that:
the outer chamber (62) is divided by a partition (70) in a front chamber (72), located on the front side of the vehicle, and a rear chamber (74), located on a rear side of the vehicle, the partition (70) having a communication hole (76); and the inner chamber (64) communicates with the rear chamber (74) through the second supply port (67).
[6]
6. Vehicle seat (10) equipped with a side airbag device (14) according to claim 5, characterized by the fact that the diffuser (53) is provided inside the rear chamber (74).
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3/6
[7]
7. Vehicle seat (10) equipped with a side airbag device (14), according to claim 6, characterized by the fact that the diffuser (53) has a third supply hole (112), which provides communication between an inner part of the diffuser (53) and an inner part of the rear chamber (74) on the peripheral wall of the diffuser (53).
[8]
8. Vehicle seat (10) equipped with a side airbag device (14) according to claim 7, characterized in that the opening area of the third supply hole (112) is smaller than an opening area opening the first supply hole (55).
[9]
9. Vehicle seat (10) equipped with a side airbag device (14) according to any one of claims 5 to 8, characterized in that the inner chamber (64) and the rear chamber (74) are configured so that the inner chamber (64) and the rear chamber (74), both in an inflated and disposed state, fill a space between the occupant (P) and a side part of a vehicle cabin.
[10]
Vehicle seat (10) equipped with a side airbag device (14) according to any one of claims 1 to 4, characterized in that the outer chamber (62) is formed by a single chamber.
[11]
Vehicle seat (10) equipped with a side airbag device (14) according to any one of claims 1 to 10, characterized in that one end of a strap (102) is mounted on the inner chamber (64 ), and the other end of the strap (102) is mounted on the side frame (30).
[12]
12. Vehicle seat (10) equipped with a side airbag device (14) according to any one of claims 1 to 11, characterized in that the diffuser (53) is configured to
Petition 870180126869, of September 5, 2018, p. 85/143
4/6 be located between a rear part of the outer chamber (62) and a rear part of the inner chamber (64), when the outer chamber (62) and the inner chamber (64) are inflated and arranged.
[13]
13. Vehicle seat (10) equipped with a side airbag device (14) according to any one of claims 1 to 12, characterized in that the outer chamber (62) is configured to contain a part of an occupant of normal construction, from a shoulder to a waist of a side of a vehicle, when the outer chamber (62) is inflated and arranged, and the inner chamber (64) is configured to contain a rear part of the normally constructed occupant, from shoulder to chest, as seen from the side of the vehicle, when the inner chamber (64) is inflated and arranged.
[14]
14. Vehicle seat (10) equipped with a side airbag device (14) according to any one of claims 1 to 13, characterized in that the first supply hole (55) is an elongated hole having a direction longitudinally oriented substantially in an upward and downward direction of the seat.
[15]
15. Vehicle seat (10) equipped with a side airbag device (14) according to claim 5, characterized by the fact that:
the outer chamber (62) is configured to restrain a part of a normally constructed occupant from a shoulder to a strap, viewed from the side of a vehicle when the outer chamber (62) is inflated and deployed, and the chamber internal (64) is configured to retain a rear part of the normal construction occupant from the shoulder to the chest as seen from the side of the vehicle when the inner chamber (64) is inflated and unfolded;
a shoulder restraint part (75) projecting towards the front side of the vehicle, relative to a part of the partition (70), in a lower part of the outer chamber (62), is integrally proposedPetition 870180126869, 05/09 / 2018, p. 86/143
5IQ attached to an upper part of the rear chamber (74); and the second supply port (67) includes an upper supply port (67A), provided on an upper side of the vehicle in a connection part between the inner chamber (64) and the rear chamber (74), and a lower supply (67B), provided on a lower side of the vehicle relative to the upper supply port (67A) and of which an opening area is adjusted to be smaller than an upper supply port opening area (67A).
[16]
16. Vehicle seat (10) equipped with a side airbag device (14) according to any one of claims 5 to 9, characterized in that the inner chamber (64) and the rear chamber (74) are formed by a single chamber.
[17]
17. Vehicle seat (10) equipped with the side airbag device (14) according to any of claims 5 to 9, characterized in that an end of a strap (102) is mounted on the inner chamber (64) , and the other end of the strap (102) is mounted on the side frame (30), and the inner chamber (64) and the rear chamber (74) are formed by a single chamber.
[18]
18. Vehicle seat (10) equipped with the side airbag device (14) according to any one of claims 5 to 9, characterized in that the first supply hole (55) is an elongated hole that has a longitudinal direction oriented substantially in an upward direction of the seat and the inner chamber (64) and the rear chamber (74) are formed by a single chamber.
[19]
19. Lateral airbag device (14), characterized by the fact that it comprises:
an inflation device (22) configured to supply a gas;
a diffuser (53) containing the inflation device (22);
Petition 870180126869, of September 5, 2018, p. 87/143
6/6 an inner chamber (64) of which an inner side communicates with an inner side of the diffuser (53) through a first supply orifice (55), formed in a peripheral wall of the diffuser (53); and an outer chamber (62) of which an inner part communicates with the inner part of the inner chamber (64) through a second supply orifice (67), formed in the inner chamber (64).

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同族专利:

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法律状态:
2019-05-28| B03A| Publication of a patent application or of a certificate of addition of invention [chapter 3.1 patent gazette]|

优先权:

---

申请号 | 申请日 | 专利标题

---

JP2017-180670|2017-09-20|

---

JP2017180670A|JP6856482B2|2017-09-20|2017-09-20|Vehicle seats and side airbags equipped with side airbags|

---