丹麦专利DK201670177A1 Eyeglasses and method of making eyeglasses

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专利摘要:
There is disclosed an eyeglass bar with a first end portion which comprises a hinge portion intended for connection with a hinge portion of a front piece as well as a second end portion which is intended to be bent to form an earlobe. The eyeglass bar is made of plastic. In a channel extending at least over the second end portion of the eyeglass rod, a metal rod is attached for stiffening the plastic rod. An elastic resilient friction element is connected to the eyeglass rod in a position at the earlobe for contact behind the ear of a user. The channel is connected to a recess in the side of the plastic rod, which faces inwards into the earlobe. The metal bar is provided with first lateral projections intended for fastening in the plastic bar and with second lateral projections for releasable snap engagement with openings in the friction element.
公开号:DK201670177A1
申请号:DKP201670177
申请日:2016-03-30
公开日:2017-07-17
发明作者:Hans Boye-Nielsen
申请人:Lindberg As；
IPC主号:

专利说明:

Eyeglass Bar and Method of Manufacturing Eyeglass Field of the Invention
The present invention relates to an eyeglass bar having a first end portion comprising a hinge portion intended for connection with a hinge portion of a front piece, and a second end portion intended to be bent to form an earlobe formed by plastic and wherein in a channel extending at least over the second end portion of the eyeglass is a metal bar for stiffening the plastic rod, and wherein an elastic resilient friction member is connected to the eyeglass in a position at the earlobe for contact behind the ear of a user .
The invention further relates to a method of producing an eyeglass bar having a first end portion comprising a hinge portion intended for connection with a hinge portion of a front piece and a second end portion which is intended to be bent to form an earhook which a spectacle rod is formed of plastic and in which, in a channel at least extending over the second end portion of the spectacle rod, is attached a metal rod for stiffening the plastic rod, and wherein an elastic resilient friction member is connected to the spectacle rod in a position at the rear ear contact. the ear of a user.
BACKGROUND OF THE INVENTION
Eyeglass rods are used for a spectacle frame comprising a front piece, two glasses rods connected to the front piece, preferably via respective hinges, with which the glasses rods are pivotally connected to the front piece.
It has been known for many years to produce plastic eyeglasses in the form of acetate. The present invention has been made in light of the problems which arise from it. However, the invention also applies to eyeglass rods of other types of plastics, although it will be explained in the following in connection with acetate.
It is known to provide the eyeglasses with the function element, which should preferably be replaced by the user. This fiction element is often a tube pulled over an eyeglass in a position at the earlobe for contact behind the ear of a user. This is typically applied to metal eyeglasses for user comfort, but is also applied to plastic eyeglasses. This avoids direct contact between plastic and sweat, grease and other excretions that are degrading to the plastic. However, these pipes can cause reduced comfort as the edges of the pipes may appear uncomfortable to the user. Furthermore, there is a risk of the tube being displaced along the eyeglass rod so that it does not maintain an optimal placement in the earlobe.
It is proposed, for example, in US 6,045,221, to place a friction element in a recessed manner in a recess in the side of the first end of the eyeglass, which is intended for connection with a front piece. Plastic and especially acetate are very sensitive to notch effects, which means that no strong dimensional transitions can be made in the eyeglass bar, which is especially true of the earlobe. This imposes constraints on the design of the plastic rod and stiffening element. Thus, in the US publication, a fictional element in the form of a tube for use in the ear canal is also shown.
Acetate is a soft plastic material and is therefore suitable for bending in a plane for forming an earlobe adapted for placement behind the ear of a user and for bending in another plane for adaptation to the shape of the wearer's head. Due to the softness of acetate, the eyeglasses have previously had a considerable size, which has made it difficult to bend and made the glasses unwanted heavy and filling behind the ear.
It is a desire to minimize the size of the eyeglass rod for the user's comfort, both in weight and fullness. However, strength and shape stability become insufficient. Therefore, it is also known to insert a reinforcing reinforcing element in the form of a metal bar into a longitudinal bore of the eyeglass bar. This is known, for example, from US 1,736,953. This makes it possible to bend the plastic and establish a stiffening of the plastic rod which ensures a permanent shape of the bending due to the properties of the metal rod and at the same time an increase in strength is obtained. Such an eyeglass rod can be easily adjusted by an optician or user without the risk of damaging the eyeglasses.
To avoid the metal rod being displaced out of the spectacle rod, it is typically attached by gluing. However, it turns out that shear stresses caused by bending the plastic rod to fit the user means that a glue joint cannot hold. Therefore, another method of attachment is needed which ensures that the metal rod remains firmly connected to the plastic rod.
For plastic eyeglasses, there is thus a need to be able to integrate both the fiction element and the stiffening element into the plastic rod in a single way, which allows an optician or user to easily adjust the shape of the eyeglass and where the user can easily and easily replace the friction element.
The object of the invention
It is the object of the present invention to provide an eyeglass bar and a method of making such an eyeglass bar which alleviates the problems of the known eyeglass bars and which allows a fictional element and a stiffening element to be integrated into the plastic bar in a simple manner and which allows the optician or user to easily adjust the shape of the eyeglass at the same time as the user can easily and easily replace the friction element.
Description of the Invention
This is achieved in accordance with the present invention with an eyeglass of the preamble type, which is characterized in that the channel is connected to a recess in the side of the plastic rod which faces inwards into the earlobe and that the metal rod is provided with first lateral projections intended for fastening in the plastic rod and with other lateral projections for releasable snap engagement with openings in the fiction element.
The method according to the invention is characterized by comprising the steps of a - producing a plastic rod having the basic shape of the eyeglass rod, b - producing a channel in the plastic rod, c - producing a lateral recess in the plastic rod extending from a side edge and in connection with the channel, d - manufacture of a metal rod of greater length than the recess and with first lateral projections and with second lateral projections on opposite side edges of a central portion of the metal rod between end portions not provided with projections, e - placement of the metal rod in the recess as the metal rod end portions are inserted into the recess. channel - optionally when bending plastic rod and metal rod, if an inner channel is used, f - attaching the first lateral projections to the plastic rod while simultaneously applying pressure to establish a fixed engagement between the first lateral projections and the plastic rod, g - manufacture of an elastic resilient friction harness h - placement of the friction element in the recess, thereby pressing the other lateral projections into the openings of the friction element for elastically releasable snap engagement, - bending the eyeglass bar to form an earlobe.
Thus, with the present invention, it is possible to overcome the problem associated with the prior art in which a stiffening element is attached to the plastic rod by gluing. When bending the eyeglass rod, it has been found that the bonding has been insufficient, since the forces acting during the bending of the eyeglass rod can cause a breakage of the glue.
Furthermore, with the present invention there will also be provided a stiffening of the plastic rod, the stiffening element in the form of the metal rod extending on each side of the recess and into channels established in the plastic rod. This will avoid the risk of breaking due to the carving effect in the recess.
As the metal rod has lateral projections, a secure attachment is obtained in the plastic rod when a fastener is established, which preferably occurs as a weld. The welding is preferably carried out by ultrasonic welding, at the same time applying pressure such that the lateral projections are inserted into the plastic rod during the welding.
Since the metal bar has other lateral projections that can engage releasably snap engagement with a friction member in the earpiece, it will be easy for a user to replace the friction member. Since the friction element is placed in a recess in the plastic rod, no sharp edges will appear which may be bothersome to the user.
As the plastic rod is reinforced by a metal rod fully or partially contained, small dimensions can be worked so that the eyeglass rod would not appear with a nuisance size at our ear. According to a further embodiment, the spectacle rod according to the invention is characterized in that the projections, in their connection to the metal rod, have a smaller cross-section than the cross-sections of the projections at a distance from the metal rod. Both the first and second lateral projections may have the same shape or different shape. However, it is preferred that they appear with the indicated cross-sectional shape, e.g. with a mushroom shape or an arrow shape. In this way, the embedding in the plastic will create a secure engagement and thus a secure retention via the first lateral projections. The other lateral projections can easily establish a snap effect when they have a mushroom or arrow shape.
According to a further embodiment, the spectacle bar according to the invention is characterized in that the friction element is an elastic resilient element having the apertures in the side for receiving the other lateral projections due to the elastic resilience of the material of the fiction element.
In order to obtain a particularly simple snap action, it is preferred that the friction element is made of a resilient resilient material. This will enable the user to establish the snap effect in a particularly simple way. At the same time, the resilient resilience of the material of the friction element will contribute to the secure retention of the friction element. Also, the resilient resilience will make it easy for the user to establish the snap engagement compared to friction elements where a hard material will be provided.
According to a further embodiment, the spectacle rod according to the invention is characterized in that the first lateral projections are fixed in the plastic rod and embedded therein by welding.
As mentioned above, welding is a preferred embodiment for embedding the first lateral projections into the plastic rod. By establishing the embedment during a welding, the plasticized plastic material will safely enclose the lateral projections while being pressed into the plastic material.
According to a further embodiment, the spectacle rod according to the invention is characterized in that the end members of the metal rod are not provided with projections and that the metal rod is longer than the recess, so that the end portions extend into the channel in the form of an inner channel on each side of the recess.
To ensure easy mounting, the metal rod end portions on either side of the first second projections will be a smooth rod or plate shape. This makes it possible in a simple way that these end portions can extend into a channel on each side of the recess. In this way, an effective stiffening of the plastic material is achieved in the area where the recess is provided. Thus, the risk of the plastic material cracking when an earlobe is formed is avoided. An earlobe can thus be safely established by an optician or user.
It should be noted that the stiffening metal bar not only provides security against the plastic cracking in the buck. It also provides a shape stability in the eyeglass bar. This shape stability will not only be provided in the plane of the earlobe, but will also be able to establish a shape stability when the eyebrow is bent in the direction perpendicular to the earlobe to establish an adjustment of the user's head shape.
According to a further embodiment, the eyeglass bar according to the invention is characterized in that the plastic bar is made of acetate.
Acetate is a preferred material. However, other plastic materials can be selected to make the plastic rod.
According to a further embodiment, the eyeglass bar according to the invention is characterized in that the metal bar is made of titanium.
Titanium is preferred for making the metal bar, as this is a very lightweight material. However, other metals may also be used to make the metal rod.
According to a further embodiment, the spectacle rod according to the invention is characterized in that the metal rod has a rectangular cross-section and that the first and second lateral projections are formed on two opposite sides of the metal rod.
Although the metal bar may be provided with a circular or oval cross section, it is preferred that it has a rectangular cross section. It is also preferred that the plastic bar has a rectangular cross section. In this form, the first second projections on the metal rod will be formed on the two narrow opposite sides of the metal rod. The projections may be made by molding or cutting the metal bar from a sheet metal. When the rectangular metal rod is placed and embedded in the plastic rod, the other projections will automatically be placed in the recess opening within the rectangular cross-section of the plastic rod. This is ensured by placing the metal rod in a central recess in the plastic rod.
According to a further embodiment, the spectacle bar according to the invention is characterized in that the fictional element has an outer shape corresponding to that of the recess, such that a cross-section through the spectacle bar next to the recess corresponds to the cross section of the spectacle rod in areas at each side of the recess. When the friction element has an outer shape corresponding to the size of the recess, no sharp transitions will occur. The friction element will be located within the recess so that the cross-section of the eyeglass in areas on each side of the recess will correspond to the cross-section next to the fiction element. Thus, it can be said that the friction element located is recessed into the eyeglass rod and the outer surfaces are planar with the outer surfaces of the plastic rod.
According to a further embodiment, the spectacle rod according to the invention is characterized in that the channel of the plastic rod has a lateral opening, which has an extension from the recess to terminate the second end portion of the spectacle rod, so that part of the metal rod protrudes from the lateral opening of the channel.
The channel of the plastic rod may be a closed channel - or an inner channel having apertures alone at the ends of the channel, or the channel is made as a channel with a lateral opening. In this situation, the channel can be said to be an open channel. When this channel extends from the end of the second end portion of the eyeglass bar to the recess, it is possible to place the metal bar by insertion through the lateral opening. It is preferred with such an embodiment that the metal bar has an outer end portion which will be placed in a closed bore at the second end portion of the eyeglass in a direction away from the front of the eyeglass.
With this construction, the metal bar can simultaneously form an integral part of the hinge element used to secure the eyeglass bar to the front piece. If operated with closed internal ducts where the metal element does not extend over the entire length of the plastic rod, an additional metal rod is needed. This must be attached to the acetate and at the same time be provided with a hinge element which can cooperate with a hinge element on the front of the glasses. Thus, by using a duct having a lateral opening over most of the extension, it will be possible to obtain a simpler mounting of the hinge portion while establishing a stiffening of the plastic rod.
According to a further embodiment, the spectacle rod according to the invention is characterized in that the plastic rod in the area between the recess and the lateral opening covers the side faces of the metal rod.
To ensure a flat surface at the earlobe, it is preferred that the plastic rod has material on each side of the recess. Although a channel with a lateral opening is used, it is preferred that there is at least one area adjacent to the recess where material of such extent is provided that the cross-sectional shape of the plastic rod will be similar on both sides of the recess. This will allow the friction element to be placed between plastic parts. If the plastic rod does not have material covering the side of the metal rod protruding from the lateral opening of the channel, the friction element will be located in a recess which can be said to have an end only at one end of the friction element. Such an embodiment is also possible. Application description
The invention will then be explained in more detail with reference to the accompanying drawing, in which fig. 1 is a sketch to illustrate the various process steps of producing an eyeglass bar of the invention; FIG. Figure 2 is a side view of a first embodiment of an inner channel eyeglass bar; Figure 3 is a partial view of an eyeglass using a second embodiment of an open channel eyeglass according to the invention; 4 shows a detail of the embodiment of FIG. 3; 5 is a view of single elements used in the construction of FIG. 3 and 4, FIG. 6 shows a spectacle bar according to the invention after it is bent and ready for mounting in a spectacle; FIG. 7 illustrates various examples of embodiments of the first and second lateral projections.
Detailed Description of the Invention In FIG. Figure 1 shows a few steps a-k, which illustrate the method of making the eyeglass bar. In step a, an acetate rod 1 is provided which is provided with a bore 2 as well as a lateral recess 3.
Step b illustrates a metal bar 4 for reinforcement. The metal bar 4 has first lateral projections 5 and second lateral projections 6 positioned opposite the first lateral projections. In step c, it is seen that the metal rod 4 is placed in the plastic rod with the first second lateral projections located from the recess 3. On each side 7 of a section 8 with the lateral projections smooth areas which can be accommodated in the channel 2.1 step d is seen that the metal element ends 7 are located in channel 2 and have a weak waveform. In step e, a welding body 9 is pressed against the metal rod such that it is welded firmly to the rod 1 while being imparted in its shape within the plastic rod. Step f shows the finished shape in which the metal rod 4 is embedded in the plastic rod 2. In step g, it is seen how the exposed other projections 6 are freely accessible in the side edges of the plastic rod. In step h, a fiction element 7 will be pressed into the recess. The friction element is provided with a series of holes 7 in which the other projections are received in a releasable snap engagement. Step i shows the finished eyeglass in a straight shape. Here it is seen that a metal element 10 is mounted on the plastic rod 1. The metal element 10 is provided with a hinge part 11 which serves to cooperate with a hinge part on a front of a spectacle. In step j, it is seen that a bend 12 is made so that an ear canal 13 is formed. At the inner side of the ear canal the friction element 7 is provided in the recess. Step k shows how the plastic rod 1 is also brought into a curved shape which adapts to the user's main shape. In the final form shown in FIG. 1, the eyeglass rod is ready to be mounted on a front piece.
FIG. 2 shows a metal bar consisting of two parts, namely a first part 13 and a second part 14. The part 13 has a shape as explained above with reference to FIG. 1. The two parts 13 and 14 are intended to be placed in the plastic rod shown at the bottom of FIG. 2. It is thus seen that the metal bar 14 will extend beyond the plastic bar to provide the hinge portion 11 or in a position outside the plastic bar.
The element 14 can be placed in the plastic rod by providing a through bore for receiving the elongated portion 15 and a cutter for receiving the plate-shaped portion 16.
FIG. 3 illustrates a partial view of a spectacle 17. The spectacle 17 has a front piece 18 comprising a hinge member 19 which cooperates with the hinge member 11 of the spectacle rod. The front piece 18 is obviously provided with a glass 20 and nose pads 21. In FIG. 4, an enlarged view of the ear canal 13 is shown. Here, it is seen how the friction element 7 is fully accommodated in the recess 3 such that the upper sides of the friction element are planar with the planar upper sides of the eyeglass bar 1. Thus, an unchanged cross section will appear over the length of the eyeglass bar.
FIG. 5 illustrates three parts included in the eyeglass bar shown in FIG. 3 and 4. Thus, a plastic rod 1, a metal rod 2 and a friction element 7 are seen.
In FIG. 3-5, it appears that the duct 2 is open such that a through metal bar 2 is projecting from the plastic rod through a lateral opening 22 for the duct 2. In FIG. 6, an area 23 is shown, in which the plastic part is protruding next to the recess 3. This will provide at each end of the recess a protruding part of the plastic material between which the insulating element 7 is placed.
With the embodiment illustrated in FIG. 3-5, the metal rod is thus projecting from the plastic member over its entire length and the metal rod 2 is arranged at its front end to be connected to a hinge member 11. Alternatively, the hinge member 11 may be provided integrally with the metal rod 2 in the form of a folding of the metal rod. In FIG. 6 is a spectacle bar constructed according to the principle illustrated in FIG. 3-5.1 in this embodiment, the metal rod 2 is projected from the side opening of the channel in the plastic rod 1. FIG. 6 illustrates how it is possible to impart plastic-sized mold. Thus, not only is there a curvature at the ear canal 13 in the plane of the paper. As seen in the left side image, a waveform 24 is provided to fit the user's head. The bottom image illustrates how an S-shaped abdomen 25 is formed at the earlobe. The spacious shape to which the eyeglass rod can be provided will be retained and can be formed without the risk of the plastic rod breaking during the bending due to jaw action in the cutouts at the recess 3.
FIG. 7 illustrates different embodiments of the first lateral projections 5 and the second lateral projections 6 in the area of the metal rod 8. Although the projections 5 and 6 may be rectilinear projections of the same cross-sectional shape extending from a central portion 26 of the metal rod, a shape is preferred either with mushroom or arrow shape shown in the top figure or the angular shape and the circle shape shown in the bottom figure. Common to these designs of the projections 5 and 6 is that they have a smaller cross-section by their connection to the central part 26 of the metal rod than at a position at a distance from the central part 26. This provides a particularly secure embedding in the plastic material for the first projections 5.
The other lateral projections, because of their shape, will establish a particularly secure engagement with holes in the friction element as they can enter these holes and be retained by snap engagement. The snap engagement established will be further enhanced when the insulating element is made of a resilient resilient material such as e.g. rubber.
As a practical example, dimensions can be given for plastic bars and metal bars that have rectangular shape. The thickness of such a plastic bar will typically be between 2-5 mm and the height will typically be between 3-7 mm. The thickness of a metal rod included in such a plastic rod will be between 0.5-1.5 mm. The height of the projections will typically be between 0.7-2 mm.

权利要求:
Claims (12)
[1]
An eyeglass bar having a first end portion comprising a hinge portion intended for connection with a hinge portion of a front member and a second end portion intended to be bent to form an earpiece, said spectacle bar being formed of plastic and wherein in a channel extending at least over the second end portion of the eyeglass, is attached a metal rod for stiffening the plastic rod, and wherein an elastic resilient friction member is connected to the eyeglass in a position at the earlobe for contact behind the ear of a user, characterized by, that the channel is connected to a recess in the side of the plastic rod which faces inwards into the earlobe, and that the metal rod is provided with first lateral projections intended for attachment to the plastic rod and with other lateral projections for releasable snap engagement with openings in the friction element.
[2]
Glass bar according to claim 1, characterized in that the projections, by their connection to the metal bar, have a smaller cross section than the cross sections of the projections at a distance from the metal bar.
[3]
Spectacle bar according to claim 1 or 2, characterized in that the friction element is an elastic resilient element having the openings in the side for receiving the other lateral projections due to the elastic resilience of the material of the friction element.
[4]
Glass bar according to any one of the preceding claims, characterized in that the first lateral projections are fixed in the plastic bar by being embedded therein by welding.
[5]
Glass bar according to any one of the preceding claims, characterized in that the end members of the metal bar are not provided with projections and that the metal bar is longer than the recess such that the end parts extend into the channel in the form of an inner channel on each side. of the recess.
[6]
Glass bar according to any of the preceding claims, characterized in that the plastic bar is made of acetate.
[7]
Eyeglass bar according to any one of the preceding claims, characterized in that the metal bar is made of titanium.
[8]
Glass bar according to any of the preceding claims, characterized in that the plastic bar has a rectangular cross-section, that the metal bar has a rectangular cross-section and that the first and second lateral projections are formed on two opposite sides of the metal bar.
[9]
An eyeglass bar according to any one of the preceding claims, characterized in that the friction element has an outer shape similar to that of the recess such that a cross section through the eyeglass bar next to the recess corresponds to the cross section of the eyeglass bar in areas at each side of the recess.
[10]
Spectacle bar according to claim 8 or 9, characterized in that the channel of the plastic rod has a lateral opening which has an extension from the recess for terminating the second end portion of the spectacle rod, such that a part of the metal rod protrudes from the lateral opening of the channel.
[11]
11. Glass bar according to claim 10, characterized in that the plastic bar covers the side surfaces of the metal bar in an area between the recess and the lateral opening.
[12]
A method of manufacturing an eyeglass bar having a first end portion comprising a hinge portion intended for connection with a hinge portion on a front piece, and a second end portion intended to be bent to form an earlobe formed of plastic and wherein in a channel extending at least over the second end portion of the eyeglass is a metal bar for stiffening the plastic rod, and wherein an elastic resilient friction member is connected to the eyeglass in a position at the ear bud for contact behind the ear user, comprising the steps of a - producing a plastic rod having the basic shape of the eyeglass rod, b - producing a channel in the plastic rod, c - producing a lateral recess in the plastic rod extending from a side edge and in connection with the channel, d - manufacturing of a metal rod of greater length than the recess and with first lateral projections and with second lateral projections leap on opposite side edges of a central portion of the metal bar between non-projecting end portions, e - placing the metal bar in the recess as the metal bar end port is inserted into the channel - optionally by bending the plastic bar and metal bar, if an inner channel is used, f - attaching the first lateral projections to the plastic rod while simultaneously applying a pressure to establish a fixed engagement between the first lateral projections and the plastic rod; g - producing an elastic resilient friction member with openings for cooperating with the second lateral projections; h the friction element in the recess, thereby pushing the other lateral projections into the openings of the friction element for elastically releasable snap engagement;

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法律状态:

优先权:

申请号 | 申请日 | 专利标题

DKPA201670177A|DK178971B1|2016-03-30|2016-03-30|Eyeglasses and method of making eyeglasses|DKPA201670177A| DK178971B1|2016-03-30|2016-03-30|Eyeglasses and method of making eyeglasses|

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KR1020187031356A| KR102366742B1|2016-03-30|2017-03-29|Temple Bars and How to Craft Temple Bars|

PCT/DK2017/050092| WO2017167342A1|2016-03-30|2017-03-29|Temple bar and a method of manufacturing a temple bar|

JP2018551401A| JP6932139B2|2016-03-30|2017-03-29|Temple bar and method of manufacturing temple bar|

CN201780026883.5A| CN109477975B|2016-03-30|2017-03-29|Temple bar and method for producing a temple bar|

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