Vehicle seat

Abstract

The present invention aims to provide a vehicle seat including a cushion having an air passage, a skin material, and a skin locking clamp, and capable of preventing the skin locking clamp from coming off. A vehicle seat (51) includes a cushion (52) having an air passage (55), a skin material (33), and a skin locking clamp (35) embedded in the cushion (52) and configured to fold a prescribed linear portion (34) of the skin material (33) in. The cushion (52) includes a main body member (56) in which the skin locking clamp (35) is embedded, an intermediate layer member (57) arranged on the main body member (56), and a surface layer member (58) arranged on the intermediate layer member (57). The main body member (56) includes a linear raised portion (59) extending along the linear portion (34) and raised to define a plane substantially the same as a surface of the surface layer member (58), and the skin material (33) is folded in by the skin locking clamp (35) at a portion further away from the surface layer member (58) than the linear raised portion (59) extends.

Description

Technical Field

[0001] The present invention relates to a vehicle seat comprising a liner having an air passage, a cover material covering the surface side of the liner in the thickness direction of the liner, and a cover locking clamp embedded in the liner and configured to fold in a predetermined linear portion of the cover material. Background Technology

[0002] In some cases, the seat back and seat cushion of a vehicle seat have linear recesses on their seating surface to maintain their shape (see [reference]). Figure 1 The skin material is folded into a linear recess and secured to the liner by a skin locking clip. For example, each of Patent Documents 1 and 2 discloses a skin locking clip comprising a base plate embedded in the liner and a pair of locking portions erected on the base plate to lock the skin material.

[0003] Furthermore, Patent Document 3 discloses a vehicle seat equipped with an air ventilation system (AVS) that delivers air to / draws air from the seat surface via air channels provided in the cushion. The cushion is formed by stacking multiple components to create the air channels.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent No. 6228562

[0007] Patent Document 2: Japanese Patent No. 6339802

[0008] Patent Document 3: JP2019-206340A Summary of the Invention

[0009] The task to be accomplished by this invention

[0010] The padding is made of a foaming resin such as polyurethane foam, and skin locking clips are embedded in the padding during foaming. The surface portion of the padding with air channels consists of relatively thin padding components. If the skin locking clips are embedded in such a thin portion of the padding, the skin locking clips may not be able to withstand loads and may detach from the padding when the skin material is pulled.

[0011] In view of the above background, the object of the present invention is to provide a vehicle seat that includes a pad with an air passage, a cover material and a cover locking clamp, and is capable of preventing the cover locking clamp from disengaging.

[0012] means of completing the task

[0013] One aspect of the invention provides a vehicle seat (51) comprising: a cushion (52) having an air passage (55); a cover material (33) covering a surface side of the cushion (52) in the thickness direction; and a cover locking clip (35) embedded in the cushion (52) and configured to fold in a predetermined linear portion (34) of the cover material (33), wherein the cushion (52) comprises: a body member (56) in which the cover locking clip (35) is embedded; and an intermediate layer member (57) disposed on the body member (56). The air passage (55) is defined by a portion (55b); and a surface member (58) is disposed on the intermediate layer member (57) and defines the portion (55b) of the air passage (55) from the surface side, and the body member (56) includes a linear raised portion (59) extending along the linear portion (34) and raised to define a plane substantially the same as the surface of the surface member (58), and the skin material (33) is folded into the skin locking clamp (35) at a portion extending further away from the surface member (58) than the linear raised portion (59).

[0014] According to this aspect, the main body member includes a linear raised portion extending along the linear portion and bulging to define a plane substantially the same as the surface of the surface member (58), and the skin material is folded into the skin locking clip at a portion extending further away from the surface member than the linear raised portion. Therefore, the skin locking clip can be embedded in a thicker portion of the padding, enabling the provision of a vehicle seat that prevents the skin locking clip from disengaging.

[0015] In the above aspects, preferably, a linear shelf surface (61) extending along the linear raised portion (59) is provided on one side of the linear raised portion (59), the side of the linear raised portion (59) being opposite to the other side in which the skin material (33) of the linear raised portion (59) is folded in, and a first side surface (62) and a second side surface (63) are defined, the first side surface (62) being disposed on the base side of the linear shelf surface (61) of the linear raised portion (59), the second side surface (63) being disposed on the end side of the linear shelf surface (61) of the linear raised portion (59), and the intermediate layer member (57) being arranged such that its edge is substantially in contact with the first side surface (62), and the surface layer member (58) being arranged such that its edge is substantially in contact with the second side surface (63).

[0016] In this respect, the linear raised portion is provided with the linear shelf surface, the first side surface, and the second side surface, and the intermediate layer member is arranged such that its edge substantially contacts the first side surface, and the surface layer member is arranged such that its edge substantially contacts the second side surface. Therefore, it is possible to prevent the skin locking clamp from disengaging and to easily position the intermediate layer member and the surface layer member.

[0017] In the above aspects, preferably, the portion of the skin locking clamp (35) embedded in the main body member (56) is arranged closer to the linear portion (34) than the extended surface of the second side surface (63).

[0018] Accordingly, the portion of the skin locking clamp embedded in the main body member is arranged closer to the linear portion than the extended surface of the second side surface. Therefore, the pad is able to securely hold the skin locking clamp.

[0019] In the above aspects, preferably, the skin locking clamp (35) includes a base plate (40) and a locking member (12), the base plate (40) being embedded in the body member (56), the locking member (12) extending from the base plate (40) toward the surface side in the thickness direction and engaging with the linear portion (34), and the extended end of the locking member (12) not being embedded in the pad (52), but being arranged in the thickness direction closer to the surface side than the bottom surface of the surface member (58).

[0020] Accordingly, the extended end of the locking member of the skin locking clamp is not embedded in the pad, but is arranged in the thickness direction closer to the surface side than the bottom surface of the surface member. Therefore, the distance from the surface of the pad to the locking member of the skin locking clamp becomes relatively short, allowing the linear portion to be easily attached to the skin locking clamp.

[0021] Depending on the layout of the components constituting the seat, the size of the skin locking clamp needs to be reduced; in particular, the width of the base plate needs to be narrowed. Even in this case, it is desirable for the padding to firmly support the skin locking clamp. The object of the present invention is to provide a skin locking clamp that is firmly supported by a padding.

[0022] One aspect of the invention provides a skin locking clamp (10) that is embedded in a groove (8) of a pad (5) for securing a locked portion (6c) of skin material (6) covering at least a portion of the pad (5), the groove (8) extending in a predetermined direction with a predetermined width and depth, the skin locking clamp (10) comprising: a base plate (11) extending along the predetermined direction and the width direction of the groove (8), and embedded in the pad (5) at least at one end in the width direction; a pair of locking members (12) erected opposite each other on the base plate (11) in the width direction for locking the locked portion (6c), each locking member including a locking claw (18) on one side of the locking members (12) opposite each other; and an overhang (13) including an overhang portion (21) opposite the base plate (11) on the outside of at least one of the locking members (12) in the width direction.

[0023] In this respect, not only the two ends of the substrate in the width direction, but also the overhang portion is embedded in the pad, so that the skin locking clamp can be firmly supported by the pad.

[0024] In the above aspects, preferably, the overhang (13) includes an upright portion (20) erected on the substrate (11), and the overhang portion (21) extends outward from the end side of the upright portion (20) along the width direction of the substrate (11).

[0025] Based on this aspect, it is easy to form a liner such that the liner does not enter the space between the pair of locking members and the liner is filled in the portion surrounded by the base plate, the upright portion and the overhanging portion.

[0026] In the above aspects, preferably, the upright portion (20) includes at least a pair of pillars (20a) extending from the substrate (11) at intervals in a predetermined direction, and an opening (23) is formed between the pillars (20a).

[0027] In this respect, the padding enters the opening so that the skin locking clamp can be firmly supported by the padding.

[0028] In the above aspects, preferably, the overhang (13) further includes a reinforcing rib (22) that connects the middle portion of the overhang (21) in a predetermined direction to the substrate (11).

[0029] In this respect, the overhang is reinforced by reinforcing ribs embedded in the padding, so that the skin locking clamp can be firmly supported by the padding.

[0030] In the above aspects, preferably, the overhang portion (21) has a facing surface that is parallel to a facing surface disposed at one end of the substrate (11) in the width direction.

[0031] According to this aspect, the pad enters the space between the overhang portion and the end of the substrate in the width direction, so that the skin locking clamp can be firmly supported by the pad. Furthermore, the opposing surfaces provided at the ends of the overhang portion and the substrate in the width direction are parallel to each other. Therefore, the mold for forming the skin locking clamp can be easily removed therefrom, and the complexity of the mold can be suppressed.

[0032] In the above aspects, preferably, a stepped portion (16) is provided at the end of the substrate (11) in the width direction, the stepped portion (16) being offset from the adjacent portion in the depth direction of the groove (8).

[0033] In this respect, the padding is incorporated into the stepped portion, allowing the skin locking clamp to be securely supported by the padding. Furthermore, the shape of the step used to form the stepped portion increases the rigidity of the skin locking clamp.

[0034] Furthermore, in conventional skin locking clamps, when the locked portion of the skin material is engaged with the locking portion of the clamp, a gap exists in the linear recess in the depth direction of the clamp, causing the locked portion to potentially wobble within the clamp. If the design is modified to eliminate this gap, it may be difficult for the worker to push the locked portion in. In view of the above background, the object of the present invention is to provide a skin locking clamp that facilitates the attachment of the locked portion of the skin material to the clamp and prevents the locked portion of the skin material from detaching from the clamp.

[0035] One aspect of the invention provides a skin locking clamp (10) that is embedded in a groove (8) of a pad (5) for securing a locked portion (6c) of skin material (6) covering at least a portion of the pad (5), the groove (8) extending in a predetermined direction with a predetermined width and depth, the skin locking clamp (10) comprising: a base plate (11) extending along the predetermined direction and the width direction of the groove (8), and the pad being embedded at at least one end in the width direction. (5) Inside; a pair of locking members (12), which includes a pair of walls (17) and a pair of locking claws (18), the pair of walls being erected opposite each other on the substrate (11) in the width direction for locking the locked portion (6c), the pair of locking claws being disposed at the end portions of the walls (17), wherein a biasing portion (14) is disposed between the walls (17) in the width direction, the biasing portion (14) biasing the locked portion (6c) locked by the locking members (12) in a direction away from the substrate (11).

[0036] Accordingly, when the locked portion is pushed in, the biasing portion deforms, allowing the locked portion to easily attach to the skin locking clamp. Furthermore, with the skin locking clamp locking the locked portion, the locked portion is held between the locking claw and the biasing portion. Therefore, the locked portion will not swing within the skin locking clamp and is unlikely to detach from it.

[0037] In the above aspects, preferably, the pair of locking claws (18) are offset from each other in the prescribed direction, and the distance in the width direction between the locking claw (18) of one of the locking members (12) and the wall (17) of the other of the locking members (12) is less than the width of the locked portion (6c), and the locking member (12) is elastically deformable such that the distance is equal to or greater than the width of the locked portion (6c).

[0038] Based on this aspect, when the skin locking clamp is locking the locked portion, the locking member can lock the locked portion. Furthermore, the locking claws are offset from each other in a predetermined direction, allowing the worker to easily make the distance between the upper ends of the pair of locking members greater than the width of the locked portion by rotating the locked portion, thereby disengaging the locked portion from the skin locking clamp.

[0039] In the above aspects, preferably, the skin locking clamp (10) is made of resin, and the biasing portion (14) includes a pair of leaf springs cantilevered by the substrate (11).

[0040] Based on this, the bias portion can be integrally formed with the substrate.

[0041] In the above aspects, preferably, the pair of leaf springs are disposed outside the locking pawl (18) in the prescribed direction and offset from each other in the width direction.

[0042] Based on this aspect, when forming the skin locking fixture, the direction of mold removal can be ensured, and mold complication can be suppressed.

[0043] In the above aspects, preferably, each locking member (12) includes a guide portion (19) extending outward in the width direction from the end portion of the wall (17), and the upper surfaces of the locking claw (18) and the guide portion (19) are smoothly continuous with each other in the depth direction and inclined downward inward in the width direction.

[0044] According to this aspect, when the locked part is pressed against the upper part of the locking member so that the locked part is locked by the skin locking clamp, the guide part guides the locked part into the space between the pair of locking members, and even if the position of the locked part is offset in the width direction, the locked part can still be inserted between the upper parts of the pair of locking members.

[0045] The effects of the invention

[0046] According to one aspect of the invention, the body member includes a linear raised portion extending along a linear portion and bulging to define a plane substantially the same as the surface of the surface member, and the skin material is folded into a skin locking clip at a portion extending further away from the surface member than the linear raised portion. Therefore, the skin locking clip can be embedded in a thicker portion of the padding, enabling the provision of a vehicle seat that prevents the skin locking clip from disengaging.

[0047] According to one aspect of the invention, the linear raised portion is provided with a linear shelf surface, a first side surface, and a second side surface, and the intermediate layer member is arranged such that its edge substantially contacts the first side surface, and the surface layer member is arranged such that its edge substantially contacts the second side surface. Therefore, it is possible to prevent the skin locking clamp from disengaging and to easily position the intermediate layer member and the surface layer member.

[0048] According to one aspect of the invention, the portion of the skin locking clamp embedded in the body member is arranged closer to the linear portion than the extended surface of the second side surface. Therefore, the pad is able to securely hold the skin locking clamp.

[0049] According to one aspect of the invention, the extended end of the locking member of the skin locking clamp is not embedded in the pad, but is arranged in the thickness direction closer to the surface side than the bottom surface of the surface member. Therefore, the distance from the surface of the pad to the locking member of the skin locking clamp becomes relatively short, allowing the linear portion to be easily attached to the skin locking clamp. Attached Figure Description

[0050] Figure 1 This is a perspective view of a vehicle seat that uses the skin locking clamp according to the first embodiment;

[0051] Figure 2 This is a front cross-sectional view showing the state in which the skin locking clamp according to the first embodiment is attached to the pad;

[0052] Figure 3 This is a perspective view of the skin locking clamp according to the first embodiment;

[0053] Figure 4 This is a perspective view of the skin locking clamp according to the first embodiment;

[0054] Figure 5 This is a plan view of the skin locking clamp according to the first embodiment;

[0055] Figure 6 This is a side view of the skin locking clamp according to the first embodiment;

[0056] Figure 7 This is a perspective view showing the state in which the skin locking clamp according to the first embodiment locks the locked portion;

[0057] Figure 8 is a front view showing the skin locking clamp and the locked portion according to the first embodiment (A: the locked portion is pushed in, B: the locked portion is locked).

[0058] Figure 9 This is a cross-sectional view (in a section perpendicular to the extension direction of the groove) of the folded portion of the vehicle seat according to the second embodiment;

[0059] Figure 10 This is a schematic front view of the seat back of a vehicle seat according to the second embodiment;

[0060] Figure 11 This is an exploded perspective view showing the liner according to the third embodiment;

[0061] Figure 12 This is a plan view showing the pad according to the third embodiment;

[0062] Figure 13 This is a cross-sectional view showing the folded-in portion of the vehicle seat according to the third embodiment (along...). Figure 12 (in the cross section of line AA);

[0063] Figure 14 This is a perspective view showing a portion of the liner according to the fourth embodiment;

[0064] Figure 15 This is a cross-sectional view (in a section perpendicular to the extension direction of the groove) showing the folded portion of the vehicle seat according to the fourth embodiment;

[0065] Figure 16 This is a cross-sectional view showing the folded-in portion of the vehicle seat according to the fourth embodiment (along...). Figure 15 (in the cross section of line BB);

[0066] Figure 17 This is a cross-sectional view showing the folded portion of the vehicle seat according to a modified embodiment of the fourth embodiment;

[0067] Figure 18 is a cross-sectional view (in a section perpendicular to the extension direction of the groove) of the pad according to a modified embodiment of the shape of each protrusion according to the fourth embodiment.

[0068] Figure 19 This is a cross-sectional view (in a section perpendicular to the thickness direction of the pad) showing a modified embodiment of the arrangement of protrusions according to the fourth embodiment, including the pad and the linear portion.

[0069] Figure 20 This is a plan view showing the gasket and heater elements according to a modified embodiment of the fourth embodiment;

[0070] Figure 21 This is a plan view showing a pad and a skin locking clamp according to a modified embodiment of the orientation of the skin locking clamp according to the fourth embodiment;

[0071] Figure 22 This is a partial cross-sectional side view of a pad and a skin locking clamp according to another modified embodiment of the orientation of the skin locking clamp according to the fourth embodiment;

[0072] Figure 23 This is a partial cross-sectional side view of a pad and a skin locking clamp according to another modified embodiment of the orientation of the skin locking clamp according to the fourth embodiment;

[0073] Figure 24 This is a partial cross-sectional side view of a pad and a skin locking clamp according to another modified embodiment of the orientation of the skin locking clamp according to the fourth embodiment;

[0074] Figure 25 This is a horizontal cross-sectional view showing the side portion of the seat back of the vehicle seat according to the fifth embodiment.

[0075] Figure 26 This is a cross-sectional view showing the folded portion of a modified embodiment of the bonding device for the skin locking material and the padding according to the fifth embodiment;

[0076] Figure 27 This is a cross-sectional view (in a section perpendicular to the width direction of the groove) showing the folded portion of the vehicle seat according to the sixth embodiment. Detailed Implementation

[0077] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0078] Figure 1 This is a perspective view of a vehicle seat 1 according to an embodiment of the present invention. The vehicle seat 1 includes a seat cushion 2 supported by the vehicle body, a seat back 3 connected to the seat cushion 2, and a headrest 4 connected to the seat back 3. Each of the seat cushion 2, seat back 3, and headrest 4 includes a padding 5 made of a foamed resin such as polyurethane foam (see...). Figure 2 The surface material 6 covering the seat cushion 5 and the seat back 3 has multiple folded portions 7 formed on the surface of the seat cushion 2 and the seat back 3 in the vertical and horizontal directions. When the surface material 6 is folded into the cushion 5, the multiple folded portions are linearly recessed.

[0079] Figure 2 The illustration shows the state in which the skin locking clamp 10 (hereinafter referred to as "clamp 10") according to an embodiment is embedded in the pad 5. A groove 8 is provided at the portion of the pad 5 corresponding to each fold-in portion 7, the groove 8 extending in a predetermined direction with a predetermined width and depth, and opening on opposite sides of its bottom in the depth direction. In the following, unless otherwise indicated, the directions "upper" and "lower" do not refer to the upper and lower sides of the vehicle, but rather to the open side and bottom side of the groove 8 in the depth direction. Skin material 6 (see...) Figure 1 The device includes a main body portion 6a covering the pad 5, a fabric-like skin connecting portion 6b connected to the main body portion 6a at its upper end and extending along the extending direction of the groove 8, and a locked portion 6c connected to the lower end of the skin connecting portion 6b and extending along the extending direction of the groove 8. The locked portion 6c is a rod-like or rope-like member that protrudes from the skin connecting portion 6b in the width direction of the groove 8 and is locked by a clamp 10. The locked portion 6c has a generally rectangular shape in a cross section perpendicular to its extending direction. The upper side of the locked portion 6c is V-shaped recessed, and a pair of side members of the locked portion 6c are slightly inclined to approach each other downwards. In the cross-sectional view, the locked portion 6c is connected to the skin connecting portion 6b at the center of the upper V-shaped side of the locked portion 6c. The skin connecting portion 6b and the locked portion 6c are made of resin and are integrally formed by extrusion molding.

[0080] Figures 3 to 6 Clamp 10 is shown. Figures 2 to 6 As shown, the clamp 10 includes a base plate 11 embedded in pads 5 at both ends in its width direction, a pair of locking members 12 erected on the upper surface of the base plate 11 and configured to lock the locked portion 6c, a pair of overhanging members 13 erected on the upper surface of the base plate 11 outside the pair of locking members 12 in the width direction, and a pair of biasing portions 14 supported by the base plate 11 and configured to bias the locked portion 6c upward. The clamp 10 has a symmetrical shape (double symmetrical shape), and when the clamp 10 is rotated 180° (360° / 2) about an upper and lower axis passing through the center in its extension direction and the center in its width direction, the shape of the clamp 10 before rotation is the same as the shape of the clamp 10 after rotation. Preferably, the clamp 10 is an injection-molded product made of resin.

[0081] The substrate 11 is a plate-shaped portion, and its longitudinal and width directions are aligned with the extending and width directions of the groove 8, respectively. In the following text, unless otherwise specified, "prescribed direction" refers to the direction aligned with the extending direction of the groove 8 and the length direction of the substrate 11, and "width direction" refers to the direction aligned with the width directions of the groove 8 and the substrate 11. At both ends of the substrate 11 in the width direction, a plurality of through holes 15 extending vertically are provided. Furthermore, at each of the two ends of the substrate 11 in the width direction, a recessed stepped portion 16 is formed to allow for translation parallel to the upper side.

[0082] The pair of locking members 12 are configured to be arranged in the groove 8. Each of the pair of locking members 12 includes: a wall 17 erected on the base plate 11, a locking claw 18 extending inward from the end portion of the wall 17 in the width direction to lock the locked portion 6c, and a guide portion 19 extending outward from the end portion of the wall 17 in the width direction.

[0083] The wall 17 is a plate-shaped portion arranged substantially perpendicular to the width direction. The wall 17 is arranged at the center in a predetermined direction, and the length of the wall 17 in the predetermined direction is preferably about 1 / 4 to 1 / 2 of the length of the substrate 11 in the predetermined direction, more preferably about 1 / 3.

[0084] The locking claw 18 is inclined downwards and inwards in the width direction, and its thickness in the vertical direction becomes thinner towards the inside in the width direction. Since each of the pair of locking members 12 is provided with a locking claw 18, a total of one pair of locking claws 18 is provided. The pair of locking claws 18 are arranged at offset positions along a predetermined direction. Preferably, each locking claw 18 extends from the center of the wall 17 in the predetermined direction toward one end of the wall 17 in the predetermined direction. In plan view, the side edge of each locking claw 18 on the center side in the predetermined direction is preferably slotted in an inclined manner, such that the shortest distance between the pair of locking claws 18 is extended, and its inclination angle with respect to the width direction is preferably 45°. The distance in the width direction between the locking claw 18 of one of the pair of locking members 12 and the wall 17 of the other of the pair of locking members 12 is less than the width of the locked portion 6c, but the pair of locking members 12 is elastically deformable, such that the aforementioned distance becomes equal to or greater than the width of the locked portion 6c. The shortest distance between the pair of locking claws 18 offset from each other in a specified direction is similar to the distance described above, or equal to or greater than the width of the locked portion 6c before its elastic deformation. The distance from each locking claw 18 to the substrate 11 in the vertical direction is greater than the height of the locked portion 6c in the vertical direction, and preferably at least 1.5 times or more of its height.

[0085] The guide portion 19 slopes outward and upward in the width direction. For each of the pair of locking members 12, at least a portion of the guide portion 19 mates with at least a portion of the locking pawl 18 in the width direction, and the upper surfaces of the guide portion 19 and the upper surfaces of the locking pawl 18 are smoothly continuous with each other. The guide portion 19 is arranged in the center of the wall 17 in a predetermined direction, and its length is preferably equal to or greater than 1 / 4 of the length of the wall 17 in the predetermined direction, more preferably about 1 / 2. Alternatively, the length of the guide portion 19 may be the same as the length of the wall 17.

[0086] The pair of overhangs 13 are arranged to be embedded in the pad 5. The pair of overhangs 13 are mirror images of each other and are symmetrical about a plane that passes through the center of the clamp 10 in the width direction and is arranged perpendicular to the width direction. Each of the pair of overhangs 13 includes: an upright portion 20 that stands upright on the upper surface of the substrate 11; an overhang portion 21 that extends outward from the end side of the upright portion 20 in the width direction and is opposite to the upper surface of the end portion of the substrate 11 in the width direction; and a reinforcing rib 22 that connects the middle portion of the overhang portion 21 in a predetermined direction to the end portion of the substrate 11 in the width direction.

[0087] The upright portion 20 includes a pair of pillars 20a that extend from the base plate 11 at intervals in a predetermined direction of the overhanging portion 21 and connect to the two ends of the overhanging portion 21 in the predetermined direction. The pair of pillars 20a extend substantially in the vertical direction. The pair of pillars 20a, the base plate 11, and the overhanging portion 21 define a first opening 23 extending through in the width direction. A second opening 24 extending through in the vertical direction is formed in the portion of the base plate 11 between the pair of pillars 20a. The second opening 24 communicates with the first opening 23.

[0088] In each of the pair of overhanging members 13, the overhanging portion 21 includes a flat plate portion 21a having a lower surface and a pair of protrusions 21b. The lower surface is opposite to and parallel to the upper surface of the end portion of the substrate 11 in the width direction. The pair of protrusions 21b extend upward from both ends of the flat plate portion 21a in a predetermined direction. The outer end of the flat plate portion 21a in the width direction extends to a position that vertically matches the outer end of the substrate 11 in the width direction. In the front view, the upper edge of each protrusion 21b has an arcuate shape and smoothly connects to the inner edge of each support 20a in the width direction. Recesses 21c are provided on the opposing inner surfaces of the pair of protrusions 21b.

[0089] Preferably, the reinforcing rib 22 extends substantially in the vertical direction and connects to the center of the overhang portion 21 in a predetermined direction. Due to the provision of the second opening 24, the reinforcing rib 22 is offset outward from the support column 20a in the width direction. The upper end of the reinforcing rib 22 extends from the inner end to the outer end of the flat plate portion 21a in the width direction, and the lower end of the reinforcing rib 22 extends from the edge defining the first opening 23 at the end portion of the substrate 11 in the width direction to the outer end of the substrate 11. In the front view, the outer edge of the reinforcing rib 22 in the width direction is arc-shaped and recessed, while the inner edge of the reinforcing rib 22 in the width direction is formed as a straight line along the vertical direction.

[0090] Each of the pair of biasing portions 14 is formed by a leaf spring supported cantilevered by the base plate 11. The pair of biasing portions 14 are arranged inside the pair of locking members 12 in the width direction to bias the locked portion 6c upward. The pair of biasing portions 14 are arranged outside the pair of locking members 12 in a predetermined direction, but can also be modified to be arranged inside the pair of locking members 12 in a predetermined direction. The pair of biasing portions 14 are preferably arranged at offset positions from each other in the width direction. Preferably, a third opening 25 is formed in the portion of the base plate 11 below the pair of biasing portions 14, extending vertically therethrough, to accommodate the biasing portion 14 during elastic deformation. The distance from the biasing portion 14 in its non-elastically deformed state to the locking claw 18 in the vertical direction is less than the height of the locked portion 6c in the vertical direction, such that the pair of biasing portions 14 and the locking claw 18 can hold the locked portion 6c therebetween in the vertical direction. Furthermore, the biasing portion 14 is elastically deformable, such that the distance from the biasing portion 14 to the locking claw 18 in the vertical direction becomes greater than the height of the locked portion 6c in the vertical direction. Incidentally, each biasing portion 14 may be supported by the wall 17 instead of the base plate 11, and may be made of a spring other than a leaf spring, such as a compression coil spring.

[0091] The first opening 23 and the second opening 24 are provided, the lower surface of the overhanging portion 21 and the upper surface of the end portion of the substrate 11 in the width direction are parallel to each other, and the pair of biasing portions 14 are arranged at offset positions in the width direction. Therefore, the direction in which the mold used to form the fixture 10 is removed can be ensured, and the complexity of the mold can be suppressed. The step shape formed on the stepped portion 16 improves the rigidity of the fixture 10. Since the locked portion 6c has a relatively simple shape, the locked portion 6c can be extruded at low cost.

[0092] The attachment state of the clamp 10 to the pad 5 will be described. During the molding of the pad 5, the clamp 10 is positioned in a predetermined location to be secured to the pad 5. The pad 5 enters the space between the end portion of the substrate 11 in the width direction and the overhang portion 21 of each overhang 13, and thus the clamp 10 is firmly supported by the pad 5. Reinforcing ribs 22 connecting the overhang portion 21 and the end portion of the substrate 11 in the width direction reinforce the overhang portion 21. The reinforcing ribs 22 are embedded in the pad 5 to stabilize the position of the clamp 10 relative to the pad 5 and to ensure that the pad 5 firmly supports the clamp 10. Furthermore, the pad 5 enters the through hole 15, the stepped portion 16, the recess 21c, the first opening 23 and the second opening 24 to stabilize the position of the clamp 10 relative to the pad 5 and to ensure that the pad 5 firmly supports the clamp 10.

[0093] Figure 7 Figures 10 and 8 show the clamp 10 and the locked portion 6c (the skin connection portion 6b is not shown). (Refer to...) Figure 7 8 describes the attachment of the locked part 6c to the clamp 10 / the removal of the locked part 6c from the clamp 10.

[0094] The worker presses the locked portion 6c against the upper surfaces of the pair of locking members 12 to attach the locked portion 6c to the clamp 10. Even though the locked portion 6c is pressed against the upper surfaces of the pair of locking members 12 which are offset in the width direction, the guide portion 19, which slopes downwards and inwards in the width direction, guides the locked portion 6c towards the center in the width direction, i.e., towards the space between the pair of locking members 12. The locked portion 6c slides on the inclined upper surfaces of the locking members 12, thus causing the upper parts of the pair of locking members 12 to elastically deform and separate from each other in the width direction. When the distance in the width direction between the locking claw 18 of one locking member 12 and the wall 17 of the other locking member 12 becomes equal to or greater than the width of the locked portion 6c, the locked portion 6c can move under the locking claw 18. When the locked portion 6c passes through the locking claw 18, the pair of locking members 12 returns to their position before elastic deformation.

[0095] By elastically deforming the pair of biasing portions 14, the worker can press the locked portion 6c down a predetermined length below the locking pawl 18 (Fig. 8(A)). Therefore, the worker can easily move the locked portion 6c under the locking pawl 18 by pressing it down in this way, thereby easily attaching the locked portion 6c to the locking pawl 18.

[0096] When the worker releases his / her hand from the locked portion 6c, the locked portion 6c, which is biased upward by the pair of biasing portions 14, is pressed against the pair of locking claws 18 (Fig. 8(B)). The locked portion 6c is supported by the clamp 10 at four points, namely, by the pair of biasing portions 14 and the pair of locking claws 18. Therefore, the movement of the locked portion 6c in the vertical direction is restricted, and rotation of the locked portion 6c about an axis in a predetermined direction is prevented. In this way, the locked portion 6c is locked by the clamp 10 without play, and therefore it is unlikely to disengage from the clamp 10.

[0097] When the locked part 6c is removed from the clamp 10, as Figure 7As indicated by the arrows, the worker rotates the locked portion 6c about an upper and lower axis passing near the center of the locking member 12 in a predetermined direction, causing the pair of locking members 12 to elastically deform, thus widening the distance between the upper portions of the pair of locking members. The locked portion 6c can be removed from the clamp 10 when the distance between the locking claw 18 of one locking member 12 and the wall 17 of the other locking member 12 is equal to or greater than the width of the locked portion 6c. The pair of locking claws 18 are offset from each other in a predetermined direction, making it relatively easy to create a gap between the upper portions of the pair of locking members 12 for removing the locked portion 6c. Furthermore, since the end portion of each locking claw 18 on the center side in the predetermined direction is inclined in the plan view, the shortest distance between the pair of locking claws 18 is increased, making it easy to remove the locked portion 6c.

[0098] Figure 9 and Figure 10 A vehicle seat 31 according to a second embodiment is shown. The vehicle seat 31 includes a cushion 32, a cover material 33 covering the surface side of the cushion 32 in the thickness direction, and a plurality of cover locking clips 35 (hereinafter referred to as clips 35) embedded in the cushion 32 and configured to be folded into a predetermined linear portion 34 of the cover material 33. In the seat back 36 of the vehicle seat 31, a plurality of folded portions 37 are formed on the surface of the seating surface side (surface side). The plurality of folded portions 37 are linearly recessed because the cover material 33 is folded into the cushion 32. In this embodiment, the cushion 32, cover material 33, and clips 35 applied to the seat back 36 of the vehicle seat 31 are described as examples, but the same structure can also be applied to the seat cushion 2 (see reference 2). Figure 1 ).

[0099] The padding 32 is made of a foamed resin such as polyurethane foam and has a groove 38 open on the surface side at a position corresponding to each fold-in portion 37. Each clamp 35 is partially embedded in the bottom and vicinity of the groove 38. The skin material 33 includes a main body portion 33a covering the padding 32 and a linear portion 34 connected to the main body portion 33a and extending in the extending direction of the groove 38. The linear portion 34 includes a skin connection portion 6b of the first embodiment (see...). Figure 2 The corresponding skin connection portion 33b and the locked portion 6c of the first embodiment (see) Figure 2 The corresponding locked portion 33c. The skin connecting portion 33b and the locked portion 33c are made of resin, integrally formed by extrusion molding, and are harder than the pad 32. The locked portion 33c is locked by each clamp 35, so that the linear portion 34 is folded into the groove 38.

[0100] Multiple clamps 35 are arranged in a linearly extending groove 38 to be separated from each other. Preferably, each clamp 35 is arranged at an intersection 39 where the folded-in portions 37 linearly intersect each other. Each clamp 35 includes a base plate 40, a pair of locking members 12 extending from the base plate 40 toward the surface side and facing each other in the width direction of the groove 38, and a pair of overhanging members 41 extending from both ends of the base plate 40 toward the surface side in the width direction. The locking members 12 have locking members 12 (see [reference needed]) of the clamp 10 according to the first embodiment. Figure 3 The two locking members have the same structure. That is, each of the pair of locking members 12 has a wall 17 erected on the base plate 40, a locking claw 18 extending inward in the width direction from the end portion of the wall 17 to lock the locked portion 33c, and a guide portion 19 extending outward in the width direction from the end portion of the wall 17. Each of the pair of cantilever members 41 is shorter than the locking member 12, and its end portion extends further outward in the width direction than both ends of the base plate 40.

[0101] Each overhang 41 of the base plate 40 and each clamp 35 is embedded in a pad 32. The pad 32 does not fill the space between the end portions of the pair of locking members 12, so that the locked portion 33c can be accommodated therein. Each side surface of the recess 38 near its bottom has an inclined surface 42 that points inward toward the bottom in the width direction to connect to the surface of the locking claw 18 or guide portion 19 on one side of the body portion 33a. Preferably, the inclined surface 42 does not cover the entire surface of the locking claw 18 or guide portion 19 on said one side of the body portion 33a, but connects to the middle portion of its surface, such that the inner portion of its surface in the width direction is exposed. More preferably, the exposed surface bulges toward the body portion 33a relative to the extended surface of the inclined surface 42. Furthermore, to enhance the visibility of the exposed surface, the color of each clamp 35 is preferably different from the color of the pad 32; for example, if the pad 32 is white or light yellow, the clamp 35 is preferably blue.

[0102] The function and effect of the vehicle seat 31 according to the second embodiment will be explained. The inclined surface 42 of the groove 38 connects the locking claw 18 of each locking member 12 and the surface of the guide portion 19 on one side of the cover material 33. Therefore, upon attachment, the locked portion 33c is guided into the space between the pair of locking members 12 and prevents accidental entry into the space outside the pair of locking members 12 in the width direction. Some portions of the surfaces of the locking claw 18 and the guide portion 19 on one side of the cover material 33 are exposed from the padding 32. Therefore, the worker can easily find each clamp 35 when assembling the locked portion 33c to the clamp 35. In addition, the exposed portion of its surface is raised towards the side of the main body portion 33a, and the color of the clamp 35 is different from the color of the padding 32, thereby further improving the visibility of the clamp 35. The clamp 35 is arranged at the intersection 39 of the linearly extended folded portion 37, thus preventing the design offset of the skin material 33 at the intersection 39 and preventing the reproducibility degradation of the surface design of the vehicle seat 31.

[0103] Figure 11 and 12 A pad 52 according to a third embodiment is shown. Figure 13 The fold-in portion 53 of a vehicle seat 51 according to a third embodiment is shown. Common constructions in the second and third embodiments will be provided as common reference numerals, and their descriptions will be omitted. The vehicle seat 51 according to the third embodiment includes a cushion 52, a cover material 33 covering the surface side of the cushion 52 in the thickness direction, and a clamp 35 embedded in the cushion 52 and configured to fold in a defined linear portion 34 of the cover material 33. In this embodiment, the cushion 52, cover material 33, and clamp 35 applied to the seat cushion 54 of the vehicle seat 51 are described as examples, but the same structure can also be applied to the seat back 3 (see reference 3). Figure 1 ).

[0104] The vehicle seat 51 is equipped with an air ventilation system (AVS). That is, an air passage 55 is provided in the cushion 52, and a blower (not shown) located at the lower part of the vehicle seat 51 sends air to the surface of the vehicle seat 51 via the air passage 55 / draws air from the surface of the vehicle seat 51.

[0105] The liner 52 includes a main body member 56 in which a clamp 35 is embedded, an intermediate layer member 57 disposed on the main body member 56, and a surface member 58 disposed on the intermediate layer member 57. The air passage 55 includes a first section 55a extending vertically within the main body member 56 and open on the upper surface of the main body member 56, a second section 55b extending along the upper surface of the main body member 56 and communicating with the first section 55a, and a third section 55c communicating with the second section 55b and consisting of a plurality of openings penetrating the surface member 58 in the vertical direction. The bottom surface of the second section 55b is defined by the top surface of the main body member 56, the side surfaces of the second section 55b are defined by the intermediate layer member 57, and the upper surface of the second section 55b is defined by the surface member 58. The intermediate layer member 57 and the surface member 58 are members separately formed from the main body member 56 to form the second section 55b and the third section 55c of the air passage 55, and are thinner than the main body member 56. The main component 56, intermediate layer component 57, and surface layer component 58 are made of a foaming resin such as polyurethane foam. The clamp 35 is embedded in the main component 56 during foaming.

[0106] The main body member 56 includes a pair of linear raised portions 59 extending along a linear portion 34 of the skin material 33. Each linear raised portion 59 is closer to the surface side (upper side) than the portion of the main body member 56 on which the intermediate layer member 57 is disposed. The main body member 56 has a groove 60 between the pair of linear raised portions 59. A clamp 35 is embedded near the bottom of the groove 60, a locking member 12 protrudes from the bottom of the groove 60, and a base plate 40 and a cantilever 41 are embedded in the pad. The raised end face of each linear raised portion 59 defines a plane substantially the same as the surface of the surface member 58. The skin material 33 is folded into the clamp 35 at a portion extending further away from the surface member 58 than one of the linear raised portions 59, and the locked portion 33c is locked by the clamp 35.

[0107] Each linear raised portion 59 includes a linear shelf surface 61 on the opposite side of the recess 60. The linear shelf surface 61 faces the surface side (upper) and extends along the extending direction of the linear raised portion 59. Due to the linear shelf surface 61, a first side surface 62 and a second side surface 63 are defined within the linear raised portion 59. The first side surface 62 is disposed on the base side of the linear shelf surface 61 and extends along the extending direction of the linear raised portion 59. The second side surface 63 is disposed on the end side of the linear shelf surface 61 and extends along the extending direction of the linear raised portion 59. The length of the first side surface 62 in the thickness direction is substantially equal to the thickness of the intermediate layer member 57, and the length of the second side surface 63 in the thickness direction is substantially equal to the thickness of the surface member 58. The intermediate layer member 57 is arranged such that its edge substantially contacts (or approaches) the first side surface 62. The surface member 58 is arranged such that its end portion is disposed on the linear shelf surface 61 and its edge is substantially in contact with the second side surface 63.

[0108] Preferably, the portion of the clamp 35 embedded in the main body member 56 (the base of each locking member 12, the base plate 40, and each cantilever 41) is arranged closer to the linear portion 34 than the extended surface of the second side surface 63. Furthermore, the extended ends of the locking members 12 are not embedded in the pad 52, but are preferably arranged closer to the surface side in the thickness direction than the bottom surface of the surface member 58 (the surface disposed on the linear shelf surface 61). Preferably, the cantilever 41 is arranged closer to the back side (lower side) than the linear shelf surface 61. Preferably, the clamp 35 is arranged to avoid the portion near the air passage 55.

[0109] The function and effect of the vehicle seat 51 according to the third embodiment will be explained. By using the intermediate layer member 57 and the surface member 58, the shape of the air passage 55 can be designed more freely. The portion of the main body member 56 in which the clamp 35 is embedded includes a linear raised portion 59, and is therefore thicker than the intermediate layer member 57 and the surface member 58. Therefore, compared to the case where the clamp 35 is embedded in the intermediate layer member 57 or the surface member 58, the pad 52 can more firmly support the clamp 35, thereby preventing the clamp 35 from detaching from the pad 52 due to loads from the locked portion 33c. By providing the linear shelf surface 61, the first side surface 62, and the second side surface 63, the worker can easily attach the intermediate layer member 57 and the surface member 58 to the main body member 56. The clamp 35 is arranged closer to the linear portion 34 than the extended surface of the second side surface 63, and the end portion of the clamp 35 in the width direction is embedded in the relatively thick portion of each linear ridge 59, thereby increasing the force of the main body member 56 for supporting the clamp 35. The extended end of each locking member 12 is not embedded in the pad 52, but is arranged closer to the surface side in the thickness direction than the bottom surface of the surface member 58, thereby preventing the linear ridge 59 from becoming too thick.

[0110] Figure 14 A pad 72 according to the fourth embodiment is shown, and Figure 15 and 16 The fold-in portion 73 of the vehicle seat 71 according to the fourth embodiment is shown. Common constructions in the above embodiments and the fourth embodiment will be provided with common reference numerals, and their description will be omitted. The vehicle seat 71 according to the fourth embodiment includes a cushion 72, a cover material 33 covering the surface side of the cushion 72 in the thickness direction of the cushion 72, and a cover locking clamp 74 (hereinafter referred to as "clamp 74") embedded in the cushion 72 and configured to fold in a predetermined linear portion 34 of the cover material 33.

[0111] The pad 72 is made of a foamed resin such as polyurethane foam and has a groove 75 open on the surface side at a position corresponding to the folded-in portion 73. The linear portion 34 of the skin material 33 is harder than the pad 72. Each clamp 74 includes a base plate 76 embedded in the pad 72 and a pair of locking members 77 extending along the thickness direction of the pad 72 from the base plate 76 toward the surface side of the pad 72 and protruding from the bottom of the groove 75 toward its inward side. The locked portion 33c of the skin material 33 is locked by the pair of locking members 77 to form the folded-in portion 73. Incidentally, as Figure 17As shown, the pad 72 may include a plurality of pad protrusions 82 and a plurality of thick portions 83. The protruding surfaces of the pad protrusions 82 contact the back surface of the main body portion 33a of the skin material 33. The thick portions 83 are disposed at the bottom of the grooves 75 between the pad protrusions 82, and the clamps 74 may be embedded in the thick portions 83. In this case, each thick portion 83 is preferably connected to at least one of the plurality of pad protrusions 82. Although the addition of the thick portions 83 increases the weight of the pad 72, the clamps 74 are held by the thick portions 83 to reinforce the pad protrusions 82, thereby increasing the force by which the clamps 74 are held by the pad 72. That is, the force by which the clamps 74 remain in the pad 72 against the pulling load for pulling the linear portion 34 upward is increased.

[0112] like Figures 14 to 17 As shown, the pad 72 includes a plurality of protrusions 78 projecting from the side surface of the groove 75 toward the width direction of the groove 75. When viewed in the extending direction of the groove 75, each protrusion 78 has a generally rectangular shape. Each protrusion 78 is preferably located at the center of the groove 75 in the depth direction, and more preferably within the range of the skin connection portion 33b arranged in its depth direction. The protrusions 78 are located near the respective ends of the linear portion 34 of the skin material 33 in its extending direction. The protruding length of each protrusion 78 can be extended such that the protrusion 78 can lock the linear portion 34 from the outside in its extending direction. The protrusions 78 can be integrally molded with the body of the pad 72, or can be constituted by a component separate from the body of the pad 72. When the protrusions 78 are separate from the body of the pad 72, the protrusions 78 can be attached to the body of the pad 72 using an adhesive or the like, or attached to the body of the pad 72 by insertion therein when the body of the pad 72 is molded. Furthermore, the protrusion 78 is preferably harder than the body of the pad 72.

[0113] Each protrusion 78 serves as a mark for attaching the linear portion 34 to each clamp 74. The protrusion 78 protrudes from the side surface of the recess 75, thus making it easier to locate compared to a protrusion 78 protruding from the bottom of the recess 75. With each protrusion 78 capable of locking the linear portion 34 from the outside in its extending direction, it is possible to prevent the linear portion 34 from shifting in the extending direction of the recess 75.

[0114] Figure 18 shows a modified embodiment of the shape of each protrusion 78. When viewed along the extension direction of the groove 75 ( Figure 18A The protruding surface of protrusion 78 may be circular. Protrusion 78 may extend to reach the opening of groove 75 in its depth direction. Figures 18B to 18D When viewed along the extension direction of the groove 75, the protruding surface of the protrusion 78 can be tilted, such that its protruding width decreases towards the bottom of the groove 75. Figure 18C) or its protruding width increases toward the bottom of the groove 75 ( Figure 18D ).

[0115] Figure 19 A modified embodiment of the arrangement of the protrusions 78 is shown. Each protrusion 78 contacts the main surface of the skin connection portion 33b of the skin material 33. The protrusions 78 are arranged not only at both ends in the extension direction of the main surface, but also at the middle portion in its extension direction. The plurality of protrusions 78 includes protrusions 78 projecting from one side surface of the groove 75 and protrusions 78 projecting from the other side surface. Preferably, the protrusions 78 projecting from one side surface and the protrusions 78 projecting from the other side surface are arranged alternately. In this modified embodiment, the friction between the protrusions 78 and the skin connection portion 33b prevents the linear portion 34 from shifting in the extension direction of the groove 75.

[0116] Figure 20 The illustration shows a cushion 72 and a heater element 79 in the case where a seat heater is applied to a vehicle seat 71 according to the fourth embodiment. The heater element 79 includes fabric and heater lines 80 disposed along the surface of the fabric. The heater element 79 is attached to the surface of the cushion 72 by an adhesive or the like. When viewed in the thickness direction of the cushion 72, the clamps 74 and protrusions 78 are offset from the heater element 79.

[0117] The mold (not shown) used during the foaming of the gasket 72 has an inclined lower cavity surface and a ridge extending linearly to intersect the inclined direction of the lower cavity surface perpendicularly. A clamp 74 is attached to an upper cavity surface located on the upper side of the ridge in the inclined direction. The foaming resin material for the gasket 72 is injected individually into the areas separated by the ridges, and the volume of the foaming resin material for the gasket 72 increases as the foaming resin material foams and hardens. Defects such as voids may occur in portions where the foaming resin material arrives later than other portions. However, because the foaming resin material is injected individually, the difference in arrival time is small, and defects such as voids are less likely to occur. Therefore, defects such as voids are less likely to occur around the clamp 74, allowing the clamp 74 to be securely fixed to the gasket 72.

[0118] Since the mold includes a ridge, the liner 72 has a recess 81 with a shape corresponding to the ridge. When viewed in the thickness direction of the liner 72, the recess 81 is offset from the heater element 79 so as not to interfere with the adhesion between the heater element 79 and the liner 72.

[0119] Figures 21 to 24Modified embodiments relating to the shape and orientation of the clamp 10 of the vehicle seat 71 according to the fourth embodiment are shown. Incidentally, in these modified embodiments, the clamp 10 according to the first embodiment is used instead of the clamp 74, but clamp 35 or 74 may be used in these modified embodiments.

[0120] Figure 21 This is a schematic diagram of the groove 75 as viewed from one side of the opening. Multiple clamps 10 are arranged such that the axis of each clamp 10 in its longitudinal direction is alternately tilted left and right in the width direction (lateral direction) of the groove 75. Therefore, the linear portion 34 engaging with the clamp 10 bends, increasing the friction between the linear portion 34 and the clamp 10, thereby suppressing any deviation of the linear portion 34 in its extension direction.

[0121] Figure 22 This is a side view of the linear portion 34 and the clamp 10, showing a cross-section of the groove 75. Multiple clamps 10 are arranged such that the axis of each clamp 10 is alternately inclined in opposite directions in its longitudinal direction towards the thickness of the pad 72. Therefore, the linear portion 34, engaging with the clamp 10, bends, increasing the friction between the linear portion 34 and the clamp 10, thereby suppressing any deviation of the linear portion 34 in its extension direction.

[0122] Figure 23 and 24 This is a cross-sectional view along a section perpendicular to the extension direction of the groove 75. Incidentally, in these modified embodiments, clamp 35 of the second and third embodiments is used instead of clamp 74, but clamp 10 or 74 can be used in these modified embodiments. Clamp 35 is arranged such that the thickness direction (with respect to the arrangement on the seat cushion 2 (see...)) Figure 1 The axis of the clamp 35 in the vertical direction is inclined relative to the width direction of the groove 75. Therefore, the linear portion 34 may contact the side surface of the groove 75 or the protrusion 78, thereby suppressing the offset of the linear portion 34 in its extension direction by the friction between the linear portion 34 and the side surface of the groove 75 or the protrusion 78.

[0123] Figure 25 A horizontal cross-section of the side portion of the seat back 92 of the vehicle seat 91 according to the fifth embodiment is shown. Common features in the above embodiments and the fifth embodiment will be provided with common reference numerals, and their description will be omitted. The seat back 92 includes a frame 99, a pad 93 supported by the frame 99, a cover material 33 covering the surface side of the pad 93 at the side portion of the seat back 92, a clamp 35 embedded in the pad 93 and configured to fold in a predetermined linear portion 34 of the cover material 33, and an airbag 94 disposed within the side portion of the seat back 92. The pad 93 has a groove 38 at a position corresponding to the folded-in portion 37.

[0124] When the airbag 94 inflates, its pressure causes the breakable portion 95 located on the side portion of the seat back 92 to open, and thus the airbag 94 deploys outward toward the seat back 92. In the breakable portion 95, two portions of the cover material 33 are connected to each other in a breakable state. When the airbag 94 inflates, tension is applied to the cover material 33 to cause the breakable portion 95 to break, and thus each clamp 35 receives a force in the direction that causes the clamp 35 to disengage from the padding 93 via a locking portion 33c of the cover material 33. If the clamp 35 disengages from the padding 93 before the breakable portion 95 breaks, the tension applied to the cover material 33 decreases and is therefore not effectively transmitted to the breakable portion 95, which may result in poor deployment of the airbag 94. Various measures have been conventionally taken to prevent such deployment failures. The object of this embodiment is to provide a vehicle seat 91 capable of preventing such deployment failures with a relatively simple structure.

[0125] The airbag 94 is disposed on one lateral side of the seat back 92, but not on the other lateral side. The base plate 40 of the clamp 35, which receives the load when the airbag 94 inflates, is larger, and preferably thicker and longer in the extending direction of the recess 38, compared to the base plate 40 of the clamp 35 disposed on the other lateral side where the airbag 94 is not located. Therefore, even when receiving the load when the airbag 94 deploys, each clamp 35 is unlikely to detach from the padding 93 because the force supporting the clamp 35 by the padding 93 is large.

[0126] Figure 26 This is a cross-sectional view of the recess 38 of the vehicle seat 91 according to a modified embodiment of the fifth embodiment. Figure 26 In this embodiment, a C-ring 96 is used instead of a clamp 74. The C-ring 96 engages with the locked portion 33c and a linear member 97, such as a metal wire, arranged within the pad 93 along the extending direction of the groove 38. A hole 98 is provided at the portion of the skin connecting portion 33b adjacent to the locked portion 33c for the C-ring 96 to pass through. The structure for connecting the skin connecting portion 33b and the main body portion 33a can be the same as in the above embodiment, but the skin connecting portion 33b has a Y-shape in its cross-section perpendicular to its extending direction, and can be connected to the main body portion 33a at both ends of the Y-shape, as shown in the example. Figure 26 As shown. The locked portion 33c can have the same structure as in the above embodiment, but the shape of the locked portion 33c in the horizontal cross-section can be simpler than that in the above embodiment, for example... Figure 26 The shape is either rectangular or circular. The force that holds the C-ring 96 by the pad 93 and the linear member 97 is greater than the force that holds the clamp 74 by the pad 93. Therefore, even when receiving loads during airbag 94 deployment, the C-ring 96 cannot detach from the pad 93.

[0127] Figure 27 The fold-in portion 102 of a vehicle seat 101 according to a sixth embodiment is shown. The vehicle seat 101 includes a pad 32, a cover material 33 covering the surface side of the pad 32 in the thickness direction of the pad 32, a clamp 10 embedded in the pad 32 and configured to fold in a predetermined linear portion 34 of the cover material 33, a fabric-like first hook-and-loop fastener 103 extending from the main body portion 33a of the cover material 33, the cover connecting portion 33b or the locked portion 33c, and a second hook-and-loop fastener 104 fixed to the bottom of a groove 38 in the pad 32 and engaging with the first hook-and-loop fastener 103.

[0128] Multiple clamps 10 are arranged separately on the bottom of the groove 38, and second hook fasteners 104 are arranged between adjacent clamps 10. Marks 105 are provided on the skin connection portion 33b at positions corresponding to the clamps 10.

[0129] If only the first and second hook-and-loop fasteners 103 and 104 are used as tools for folding the skin material 33 in without using the clamp 10, the position of the skin material 33 is likely to shift in the extending direction of the groove 38. By using both the clamp 10 and the first and second hook-and-loop fasteners 103 and 104 as tools for folding the skin material 33 in, the shift of the skin material 33 can be suppressed. In addition, by using both the clamp 10 and the first and second hook-and-loop fasteners 103 and 104 as tools for folding the skin material 33 in, the number of clamps 10 and the weight of the vehicle seat 101 can be reduced compared to using only the clamp 10. Furthermore, it is possible to suppress the positional shift of the skin material 33 by having the worker insert the wire portion 34 into the groove 38 so that the mark 105 and the clamp 10 match each other.

[0130] The invention has been described with reference to specific embodiments, but the invention is not limited to these embodiments and can be modified in various ways. The invention can be applied not only to vehicle seats but also to seats in vehicles other than vehicles. The stepped portion can be modified to be recessed downwards. The overhang of the first embodiment can be modified such that the wall of each locking member serves as an upright portion, and the overhang extends outwardly in the width direction from the wall of the locking member. The linear raised portion of the third embodiment can be provided on only one side of the groove, the other side of the padding may not include the intermediate layer member and the surface member, and the entire body member can have substantially the same thickness as the linear raised portion. The skin locking clamp of the first embodiment can be applied to a vehicle seat of one of the second to sixth embodiments, the skin locking clamp of one of the second, third, fifth, and sixth embodiments can be applied to a vehicle seat of the fourth embodiment, and the skin locking clamp of the fourth embodiment can be applied to a vehicle seat of one of the second, third, fifth, and sixth embodiments. The entire contents of the basic application of this application, which claims priority under the Paris Convention, and the entire contents of the prior art referenced in this application are incorporated herein by reference.

[0131] Glossary

[0132] 1, 31, 51, 71, 91, 101: Vehicle seats

[0133] 5, 32, 52, 72, 93: Padding

[0134] 6.33: Surface material

[0135] 34: Linear portion

[0136] 10, 35, 74: Skin locking clamps

[0137] 11, 40, 76: substrate

[0138] 12, 77: Locking components

[0139] 37, 57, 73, 102: Folded-in portion

[0140] 55: Air passage

[0141] 56: Main Components

[0142] 57: Intermediate layer components

[0143] 58: Surface components

[0144] 59: Linear ridges

Claims

1. A vehicle seat, comprising: A liner that has air passages; A skin material that covers the surface side of the pad in the thickness direction of the pad; as well as A skin locking clip, which is embedded in the padding and configured to fold in a predetermined linear portion of the skin material. The gasket includes: The main component, in which the skin locking clamp is embedded; Intermediate layer member, which is disposed on the main body member and defines a portion of the air passage; and A surface member, disposed on the intermediate layer member, and defining the portion of the air passage from the surface side. The main body member includes a linear raised portion extending along the linear portion and bulging to define a plane substantially the same as the surface of the surface member, and the skin material is folded in by the skin locking clamp at a portion extending further away from the surface member than the linear raised portion. The portion of the main component in which the skin locking clamp is embedded includes the linear raised portion.

2. The vehicle seat according to claim 1, wherein, A linear shelf surface extending along the linear raised portion is provided on one side of the linear raised portion. This side of the linear raised portion is opposite to the other side in which the skin material of the linear raised portion is folded in. A first side surface and a second side surface are defined. The first side surface is disposed on the base side of the linear shelf surface of the linear raised portion, and the second side surface is disposed on the end side of the linear shelf surface of the linear raised portion. The intermediate layer member is arranged such that its edge is substantially in contact with the first side surface, and the surface layer member is arranged such that its edge is substantially in contact with the second side surface.

3. The vehicle seat according to claim 2, wherein, The portion of the skin locking clamp embedded in the main body member is arranged closer to the linear portion than the extended surface of the second side surface.

4. The vehicle seat according to any one of claims 1 to 3, wherein, The skin locking clamp includes a base plate and a locking member. The base plate is embedded in the main body member, and the locking member extends from the base plate toward the surface side in the thickness direction and engages with the linear portion. The extended end of the locking member is not embedded in the liner and is arranged to be closer to the surface side in the thickness direction than the bottom surface of the surface member.

Images