Epidermal retention clip

Abstract

To suppress breakage during roller clashing of a foaming body and to suppress coming-off of the foaming body in comparison with a structure where a part suppressing deformation of an extension part is stood on the base part held by the foaming body in a skin-locking clip arranged inside the foaming body.SOLUTION: A skin-locking clip has: a plate-like base part embedded in a foaming body and held by the foaming body; a pair of extension parts which are provided at intervals in a width direction of the base part and extend in a plate thickness direction of the base part; engaging parts which are provided for end parts of the pair of extension parts and engage engaged parts with which a skin covering the foaming body is provided; and a support part which extends from the extension parts outward in the width direction of the base part and contacts the base part and supports the extension parts when the extension parts are warped outside in the width direction.SELECTED DRAWING: Figure 8

Description

[Technical field]

[0001] The present invention relates to a skin-fastening clip. [Background technology]

[0002] Patent Document 1 discloses a cover fastening clip. This cover fastening clip is disposed inside a seat pad (foam material) and engages with suspenders attached to a cover material (cover) that covers the seat pad, thereby restraining the cover material to the pad. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6345143 Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, in the epidermis-fastening clip described in Patent Document 1, when the extended portion is pushed and elastically deformed during roller crushing of the pad, the protrusion on the extended portion abuts against the rising portion erected on the base, thereby suppressing plastic deformation (breakage) of the extended portion.

[0005] In addition, the above-mentioned skin-fastening clip has a pair of notches on the edge of the base that is held by the foam. When a force acts on the skin-fastening clip to pull out of the foam, the vicinity of the pair of notches in the base deforms and twists, preventing the base from pulling out of the foam. However, there is a demand in the market for a method to further prevent the skin-fastening clip from pulling out of the foam.

[0006] The objective of the present invention is to provide a skin-fastening clip that is placed inside a foam body, which is capable of suppressing damage to the foam body when subjected to roller crushing, and is also capable of suppressing slippage from the foam body, compared to a configuration in which a portion that suppresses deformation of the extension portion is provided on the base held in the foam body. [Means for solving the problem]

[0007] The skin-engaging clip of a first embodiment of the present invention has a plate-shaped base embedded in a foam and held by the foam, a pair of extension portions spaced apart in the width direction of the base and extending in the plate thickness direction of the base, locking portions provided at the tips of the pair of extension portions and engaging lockable portions of the skin covering the foam, and a support portion extending from the extension portions outward in the width direction of the base and abutting against the base to support the extension portions when the extension portions bend outward in the width direction.

[0008] In the first embodiment of the epidermis-fastening clip, when an external force is applied to the extended portion by, for example, roller crushing while the clip is held by the foam, the extended portion bends outward in the width direction of the base, and when the support portion abuts against the base, the extended portion is supported by the support portion. In this way, in the epidermis-fastening clip, the abutment of the support portion and the base suppresses the extended portion from being deformed by bending, and therefore the extended portion is prevented from being plastically deformed and broken when the foam is subjected to roller crushing.

[0009] In the first embodiment of the epidermis fastening clip, the extension is provided with a support portion for preventing damage to the extension, so that the foam is more likely to get in between the extension and the base than in a configuration in which the base has a rising portion for preventing damage to the extension. Therefore, in the above-mentioned epidermis fastening clip, the foam is sufficiently allowed to get into the area surrounded by the extension, the base, and the support portion, so that the force with which the base is held by the foam is increased. In other words, the above-mentioned epidermis fastening clip is prevented from slipping out of the foam.

[0010] The second aspect of the epidermis-holding clip of the present invention is the epidermis-holding clip of the first aspect, wherein the base has an insertion portion into which the tip of the support portion is inserted and an engaged portion provided on the widthwise outer side of the insertion portion, and the support portion has an engaging portion on the tip side of the support portion that engages with the engaged portion.

[0011] In the epidermis anchoring clip of the second embodiment, the foam enters the insertion portion of the base, thereby further preventing the foam from slipping out of the base.

[0012] An epidermis-holding clip of a third aspect is the epidermis-holding clip of the second aspect, wherein the insertion portion is a through hole provided in the base portion.

[0013] In the epidermis fastening clip of the third aspect, the foam can easily enter between the extension and the base, specifically into the area surrounded by the extension, the base, and the support, through the through hole as the insertion part provided in the base, which further prevents the foam from slipping out of the clip.

[0014] An epidermis-holding clip of a fourth aspect is the epidermis-holding clip of any one of the first to third aspects, wherein the support portion has a curved portion.

[0015] In the fourth aspect of the epidermis-fastening clip, the support part has a curved portion, and the curved portion disperses the direction of an external force acting on the support part when the support part abuts on the base part, thereby preventing the extension part from being plastically deformed and broken even if a large external force acts on the support part.

[0016] An epidermis-holding clip of a fifth aspect is the epidermis-holding clip of any one of the first to fourth aspects, wherein a base end of the support portion is located on the tip end side of the extension portion.

[0017] In the epidermis fastening clip of the fifth aspect, since the base end of the support part is located on the tip end side of the extension part, the area surrounded by the extension part, the base part, and the support part is wider than in a configuration in which the base end of the support part is located on the base end side of the extension part, and more foam can easily get in between the extension part, the base, and the support part. This further prevents the foam from slipping out of the foam in the epidermis fastening clip. Effect of the Invention

[0018] According to the present invention, in the skin fastening clip disposed inside the foam, damage to the foam during roller crushing is suppressed, and the clip is prevented from coming out of the foam, compared to a configuration in which a portion that suppresses deformation of the extension portion is provided on the base portion held by the foam. [Brief description of the drawings]

[0019] [Figure 1] 1 is a perspective view showing a clip according to an embodiment of the present invention; [Diagram 2] 1 is a perspective view showing a clip according to an embodiment of the present invention; [Diagram 3] 1 is a cross-sectional view showing a clip according to an embodiment of the present invention. [Figure 4] 1 is a cross-sectional view showing a clip according to an embodiment of the present invention. [Diagram 5] 1 is a cross-sectional view showing a clip according to an embodiment of the present invention. [Figure 6] 1 is a cross-sectional view showing a clip according to an embodiment of the present invention. [Figure 7] 1 is a cross-sectional view showing a clip according to an embodiment of the present invention. [Figure 8] 1 is a cross-sectional view showing a clip according to an embodiment of the present invention. [Figure 9] 1 is a perspective view of a clip according to an embodiment of the present invention, seen from above. FIG. [Figure 10] 1 is a perspective view of a clip according to an embodiment of the present invention, as viewed from below. FIG. [Figure 11] FIG. 2 is a plan view showing a clip according to an embodiment of the present invention. [Figure 12] FIG. 2 is a bottom view showing the clip of the embodiment of the present invention. [Figure 13] FIG. 2 is a front view showing a clip according to an embodiment of the present invention. [Figure 14] FIG. 2 is an exploded perspective view showing a sheet in which the clip of the embodiment of the present invention is used. [Figure 15] 1 is a perspective view showing a sheet in which a clip according to an embodiment of the present invention is used. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] An example of a skin-fastening clip according to one embodiment of the present invention will be described below with reference to Figures 1 to 15. Note that in the figures, arrow H indicates the component up-down direction, arrow W indicates the component width direction, and arrow L indicates the component front-rear direction.

[0021] First, a vehicle seat 100 in which the epidermis fastening clip 20 (hereinafter simply referred to as the "clip 20") is used will be described. As shown in Fig. 15, the seat 100 includes a cushion portion 110 for supporting the buttocks and the like of an occupant, a back portion 120 for supporting the back and lumbar region and the like, and a headrest 128 for supporting the head.

[0022] 14, the cushion part 110 includes a cushion 112 (an example of a foam body) and a skin 114. Furthermore, the cushion 112 includes a main part 112A and a pair of support parts 112B arranged to sandwich the main part 112A in the width direction.

[0023] A groove 116 is formed between each of the support parts 112B and the main part 112A, and the clip 20 is disposed at the bottom of the groove 116. Specifically, when the cushion 112 is foam-molded, the clip 20 is inserted into a mold, so that the clip 20 is disposed at the bottom of the groove 116 (see FIG. 4).

[0024] Suspenders 118 as an example of a locked portion fixed to a sheet member 117 attached to the cover 114 are attached to the clip 20 (see FIG. 7). The suspenders 118 and the clip 20 will be described in detail later.

[0025] 14, the back portion 120 includes a cushion 122 (an example of a foam) and a cover 124. Furthermore, the cushion 122 includes a main portion 122A and a pair of support portions 122B disposed so as to sandwich the main portion 122A in the width direction.

[0026] A groove 126 is formed between each of the support parts 122B and the main part 122A, and the clip 20 is disposed at the bottom of the groove 126. Specifically, when the cushion 122 is foam-molded, the clip 20 is inserted into a mold, so that the clip 20 is disposed at the bottom of the groove 126 (see FIG. 4).

[0027] A side airbag 132 (hereinafter simply referred to as "airbag") is disposed on the side of one support portion 122B. A slit (not shown) is formed in the skin 124 to release the airbag 132 to the outside when the airbag 132 is deployed.

[0028] Suspenders 118, which are an example of a locked portion, are fixed to a sheet member 127 attached to the cover 124 and are attached to the clip 20 (see FIG. 7). The suspenders 118 and the clip 20 will be described in detail later.

[0029] The suspenders 118 extend along the bottom surfaces of the grooves 116, 126 (extending in the depth direction of the paper in Fig. 7) and are tapered towards the tip side as shown in Fig. 7. The base end side of the suspenders 118 is formed with a pair of projections 118A that protrude outwards (to the left and right in Fig. 7).

[0030] <Clip> 9, the clip 20 has a base 22, a holding portion 30, and a support portion 40. The base 22 and the holding portion 30 are integrally formed from a resin material. In other words, the clip 20 of this embodiment is an integrally molded resin product. As described above, a plurality of clips 20 are disposed at the bottom of the groove 116 of the cushion 112 and the bottom of the groove 126 of the cushion 122, respectively.

[0031] (base) The base 22 is a portion of the clip 20 that is embedded in the cushions 112, 122 and held by the cushions 112, 122. The base 22 is in the shape of a plate. Specifically, the base 22 is a rectangular plate whose corners are curved in an arc shape.

[0032] As shown in Fig. 9 and Fig. 10, the base 22 has three through holes 24 aligned in the component front-rear direction along one edge 22A, and three through holes 24 aligned in the component front-rear direction along the other edge 22A. That is, these through holes 24 are aligned in the component front-rear direction and are formed in a plurality of rows (two rows in this embodiment) in the component width direction. When the cushions 112, 122 (see Fig. 14) are foam-molded, the foam enters the through holes 24 (see Fig. 7). As a result, in the clip 20, the base 22 is embedded in the cushions 112, 122 and held by the cushions 112, 122.

[0033] In addition, when the clip 20 is held by the cushions 112, 122, the base 22 is disposed so as to extend along the bottom surfaces of the grooves 116, 126 of the cushions 112, 122, as shown in Fig. 4. In other words, in the clip 20 held by the cushion 112, the extension direction of the groove 116 is the component front-rear direction, and in the clip 20 held by the cushion 122, the extension direction of the groove 126 is the component front-rear direction.

[0034] (holding part) As shown in FIG. 3, the holding portion 30 is a portion capable of holding the suspenders 118. As shown in FIG. 9, two holding portions 30 are provided side by side in the component front-rear direction, rising upward from the surface of the base portion 22. As shown in FIG. 11, one holding portion 30 and the other holding portion 30 are arranged on either side of the center line L1 of the base portion 22 in the component front-rear direction. Of the six through holes 24, a pair of through holes 24C (see FIG. 9) located at the center in the component front-rear direction are arranged on the center line L1 of the base portion 22 (see FIG. 11 and FIG. 12). A pair of through holes 24A located on one side in the component front-rear direction are arranged on both sides in the component width direction across one holding portion 30. In addition, a through hole 24B located on the other side in the component front-rear direction is arranged on both sides in the component width direction across the other holding portion 30. Since the respective holding portions 30 have substantially the same shape, one holding portion 30 will be described below. The pair of through holes 24C in this embodiment is an example of the insertion portion in the present invention.

[0035] As shown in FIGS. 4 and 9, the holding portion 30 has a pair of extension portions 32 and a pair of locking claws .

[0036] The pair of extension portions 32 are provided at an interval in the component width direction of the base portion 22 and each extend in the plate thickness direction of the base portion 22. Specifically, the pair of extension portions 32 each rise from the surface of the base portion 22 and are disposed opposite to each other.

[0037] The pair of locking claws 34 are provided at the tip ends of the pair of extension portions 32, respectively, and lock the suspenders 118. Specifically, the pair of locking claws 34 clamp the suspenders 118 and lock them.

[0038] The pair of extension portions 32 and the pair of locking claws 34 are symmetrical with respect to a center line L2 (see FIG. 4) of the base portion 22 in the component width direction.

[0039] The pair of extension portions 32 each extend along the component up-down direction. Each extension portion 32 is elastically deformable so that a tip side of each extension portion 32 moves away from the center line L2.

[0040] The locking claws 34 are formed on the tip end side of the extension portion 32 so that the tip ends of the pair of locking claws 34 are close to each other. Specifically, the tip ends of the locking claws 34 are formed closer to the center line L2.

[0041] Here, when the clip 20 is held by the cushions 112, 122, the holding portion 30 is positioned in the grooves 116, 126 of the cushions 112, 122 as shown in FIG. 4, and the locking claws 34 are exposed to the outside from the foam.

[0042] In addition, when the pair of locking claws 34 clamp and lock the suspenders 118, as shown in Figures 6 and 7, each extension portion 32 is adapted to elastically deform so that the pair of locking claws 34 move away from each other.

[0043] A protrusion 36 is formed on each of the tip ends of the pair of extension portions 32. As shown in Fig. 4, this protrusion 36 protrudes on the side opposite to the side where the extension portions 32 face each other (the side opposite to the side where the locking claws 34 are formed).

[0044] (Support part) The support portion 40 is a portion of the clip 20 that supports the extension portion 32, which is elastically deformed by an external force, to suppress plastic deformation of the extension portion 32. The support portion 40 is a plate-shaped portion extending toward the outside of the base portion 22 of the extension portion 32 in the component width direction. Specifically, the support portion 40 extends from the extension portion 32 toward the outside of the component width direction and toward the base portion 22. Furthermore, the support portion 40 has a curved portion 42 that is curved in an arc shape. The curved portion 42 is curved in an arc shape toward the outside of the component width direction and toward the base portion 22. In addition, the base end portion of the support portion 40 (the connection portion with the extension portion 32) is located on the tip end side of the extension portion 32. In other words, the support portion 40 extends from the tip end side of the extension portion 32 toward the outside of the component width direction and toward the base portion 22.

[0045] 8 and 13, the support portion 40 has an engagement portion 44 on the tip side that engages with the edge portion 25 of the through hole 24C in the base portion 22. The engagement portion 44 is a protrusion that protrudes from the tip side of the support portion 40 toward the outside in the component width direction. When the extension portion 32 bends (elastically deforms) toward the outside in the component width direction, the engagement portion 44 abuts against the base portion 22 to support the extension portion 32. Specifically, as shown in FIG. 8, when the extension portion 32 bends toward the outside in the component width direction, the tip portion of the support portion 40 is inserted into the through hole 24C, and the engagement portion 44 abuts against the edge portion 25 of the through hole 24C to support the extension portion 32. The edge portion 25 of the through hole 24C is an example of an engaged portion provided on the outside in the component width direction of the through hole 24C, which is an example of an insertion portion into which the tip portion of the support portion 40 is inserted. Furthermore, the present invention is not limited to this configuration, and for example, a recess provided in the base portion 22 may be used as an example of the insertion portion.

[0046] Here, when the clip 20 is held by the cushions 112, 122, the area between the extension portion 32, the base portion 22, and the support portion 40 is filled with foam.

[0047] Then, when the extension portion 32 elastically deforms so that the pair of locking claws 34 move away from each other (see Figures 5 and 6), as shown in Figure 8, the engagement portion 44 of the support portion 40 abuts (comes into surface contact with) the edge portion 25 of the through hole 24C of the base 22, suppressing deformation of the extension portion 32.

[0048] Next, the function of clip 20 will be explained by referring to the deformation of the clip when it is roller crushed against cushions 112, 122, the work of attaching suspenders 118 fixed to sheet members 117, 127 attached to covers 114, 124 to clip 20, and the deformation of clip 20 when excessive pulling force acts on clip 20 when airbag 132 is deployed.

[0049] (Roller crushing) FIG. 8 shows the deformation state of the clip 20 when the cushions 112, 122 are crushed by a pair of rollers 140 (only one roller is shown in FIG. 8) after demolding. As shown in FIG. 8, when the cushions 112, 122 are sandwiched by the pair of rollers 140, the extension portion 32 is bent (elastically deformed) outward in the component width direction by the pressure from the pair of rollers 140. When the extension portion 32 is bent, the engagement portion 44 of the support portion 40 abuts against the edge portion 25 of the base portion 22, and the support portion 40 supports the extension portion 32. Since the engagement portion 44 of the support portion 40 abuts against the edge portion 25 of the base portion 22 in this manner, the bending deformation of the extension portion 32 is suppressed, and therefore, when the cushions 112, 122 are roller crushed, the extension portion 32 of the clip 20 is suppressed from being plastically deformed and broken.

[0050] (Installation work) 5, the suspenders 118 are inserted into the grooves 116, 126. When the suspenders 118 are inserted into the grooves 116, 126, the tapered tip end portions of the suspenders 118 come into contact with the pair of locking claws 34.

[0051] Furthermore, when the suspenders 118 are inserted toward the bottoms of the grooves 116, 126, the pair of locking claws 34 are pressed by the suspenders 118, and the extensions 32 are elastically deformed so that the pair of locking claws 34 move away from each other, as shown in Fig. 6. This allows the suspenders 118 to pass between the pair of locking claws 34. At this time, the engaging portion 44 of the support portion 40 and the edge portion 25 of the base portion 22 do not come into contact with each other, and a gap is formed.

[0052] 7, when the projections 118A of the suspenders 118 pass between the pair of locking claws 34, the extensions 32 elastically return to their original position, and the pair of locking claws 34 sandwich and lock the suspenders 118. This causes the suspenders 118 to be attached to the clip 20.

[0053] In this manner, the attachment process of attaching the suspenders 118 to the clips 20 is completed.

[0054] (When airbag deploys) 2 and 7 show the suspenders 118 attached to the clips 20 with no pulling force acting thereon.

[0055] However, if the airbag 132 (see FIG. 14) is deployed for some reason, the airbag 132 presses against the upholstery 124 from inside the seat 100. When the airbag 132 presses against the upholstery 124, the suspenders 118 move upward, as shown in FIGS. 1 and 3. As the suspenders 118 move upward, the projections 118A of the suspenders 118 press against the locking claws 34 of the retaining portion 30, and the retaining portion 30 is lifted upward. This generates a force in the clip 20 that causes the clip 20 to come out of the cushions 112, 122.

[0056] 3, in the clip 20, the support portion 40 for suppressing damage to the extension portion 32 is provided on the extension portion 32, and therefore, compared to a configuration in which, for example, a rising portion for suppressing damage to the extension portion is provided on the base, the foam is more likely to get in between the extension portion 32 and the base portion 22. Therefore, in the clip 20, the foam gets sufficiently in the area surrounded by the extension portion 32, the base portion 22, and the support portion 40, and the force with which the base portion 22 is held by the foam (cushions 112, 122) becomes stronger. In other words, the clip 20 is suppressed from slipping out of the foam.

[0057] Furthermore, in the clip 20, the foam enters the through holes 24A, 24B, and 24C of the base 22, thereby further preventing the foam from slipping out.

[0058] Furthermore, in the clip 20, the foam can easily enter between the extension portion 32 and the base portion 22, specifically, into the region surrounded by the extension portion 32, the base portion 22, and the support portion 40, through the through hole 24C provided in the base portion 22. This further prevents the foam from slipping out of the clip 20.

[0059] In addition, in the clip 20, since the support portion 40 has the curved portion 42, the force direction of the external force acting on the support portion 40 can be dispersed by the curved portion 42 when the support portion 40 abuts against the base portion 22. This prevents the extension portion 32 from being plastically deformed and broken, even if a large external force acts on the support portion 40.

[0060] In the clip 20, since the base end of the support portion 40 is located on the tip end side of the extension portion 32, the area surrounded by the extension portion 32, the base portion 22, and the support portion 40 is wider than in a configuration in which the base end of the support portion 40 is located on the base end side of the extension portion 32, and more foam can easily get in between the extension portion 32, the base portion 22, and the support portion 40. This further prevents the foam from slipping out of the clip 20.

[0061] Furthermore, in the clip 20, the through holes 24A, 24B are formed in the base 22 on both outer sides in the component width direction, sandwiching the holding portion 30, so that the amount of resin in the base 22 can be reduced, for example, compared to a configuration in which a rising portion is provided in the corresponding portion. This reduces the weight of the clip 20, and the weight of a vehicle seat using this clip 20 can be reduced. Using such a lightweight vehicle seat can improve the fuel efficiency of the vehicle.

[0062] Although the present invention has been described in detail with respect to a specific embodiment, it is clear to those skilled in the art that the present invention is not limited to the embodiment, and various other embodiments are possible within the scope of the present invention. For example, in the above embodiment, the clip 20 is provided with two holding portions 30, but it may be provided with three or more holding portions.

[0063] In the above embodiment, an example was given of a case in which the airbag 132 presses against the outer skin 124 when it is deployed, causing the clip 20 to attempt to come out of the cushions 112, 122. However, it is not necessary for the airbag 132 to be deployed, and it is sufficient that the aforementioned force is generated in the clip 20.

[0064] In the above embodiment, the clip 20 is used in the vehicle seat 100, but the clip 20 may be used in other seats (chairs) such as an office chair, a home sofa, or a chair. [Explanation of symbols]

[0065] 20 clips 22 Base 24C Through hole (an example of an insertion part) 25 Edge portion (an example of an engaged portion) 32 Extension section 34 Locking claw (an example of a locking part) 40 Support part 42 Curved section 44 Engagement part 112 Cushion (an example of foam) 118 Suspenders (an example of a fastening part) 122 Cushion (an example of foam)

Claims

1. A plate-shaped base portion embedded in the foam and held by the foam; A pair of extension portions provided at an interval in the width direction of the base and extending in the plate thickness direction of the base; a locking portion provided at each of the pair of extension portions and configured to lock a locked portion of a skin covering the foam; a support portion that extends from the extension portion toward an outer side in a width direction of the base portion and abuts against the base portion to support the extension portion when the extension portion bends toward the outer side in the width direction; having the base portion has an insertion portion into which a tip end of the support portion is inserted, and an engaged portion provided on an outer side of the insertion portion in the width direction, The support portion has an engaging portion on a tip side of the support portion that engages with the engaged portion.

2. The epidermis-fastening clip according to claim 1 , wherein the insertion portion is a through hole provided in the base portion.

3. The epidermis-anchoring clip according to claim 1 or 2, wherein the support portion has a curved portion.

4. 4. The epidermis-holding clip according to claim 1, wherein a base end of said support portion is located on the side of a tip end of said extension portion.

Images