Vehicle seat

Abstract

Provided is a vehicle seat capable of stably holding a load applied to a cloth liner when an airbag is deployed by means of a clip. A vehicle seat includes: a frame; a pad (10) disposed on the frame; a skin covering the pad (10); an airbag device attached to the frame and having an airbag and an inflator (4b); a guide member (31) that is provided on the inner surface side of the skin at a position corresponding to the airbag device and that guides deployment of the airbag; and an engagement member (40) that engages the skin with the pad (10). The length (L2) of the engagement member (40) in the vertical direction from the first upper end to the first lower end is longer than the length (L1) of the first end portion (32) of the guide member (31) in the vertical direction from the first upper end portion (32a) to the first lower end portion (32b).

Description

Technical Field

[0001] The present invention relates to a vehicle seat, in particular to a vehicle seat comprising a safety airbag device. Background Art

[0002] In recent years, side air bags have been provided in vehicle seats to protect passengers from side impacts. Side air bags protect passengers by buffering and distributing impact loads.

[0003] The side airbag provided on the seat back efficiently transmits the inflation energy of the airbag to the joint portion (tear line) of the seam of the cover, and breaks the joint portion in a short time.

[0004] For example, in the vehicle seat of Patent Document 1, in order to deploy the airbag without delay, one end of the patch is sewn together with the cover at a joint portion, and the other end of the patch is fixed to the back frame.

[0005] In addition, for example, in the vehicle seat of Patent Document 2, the following operation is performed: a hook (suspender) (installation component) having a roughly triangular cross-section is provided on the surface, and the hook is engaged with a clamp (engaging component) embedded in a locking groove of a cushion pad, thereby fixing the surface to the cushion pad.

[0006] Prior art literature

[0007] Patent Literature

[0008] Patent Document 1: Japanese Patent Application Publication No. 2022-033340

[0009] Patent Document 2: Japanese Patent Application Publication No. 2011-069417 Summary of the invention

[0010] Problems to be solved by the invention

[0011] When fixing the cloth padding as described in Patent Document 1 together with the outer skin to the seat cushion pad, it is conceivable to fix the cloth padding together with the outer skin to the seat cushion pad using an engaging member such as a clip as described in Patent Document 2.

[0012] However, when the side airbag is deployed, since the load of the patch cloth is applied to the engaging member, there is a possibility that the engaging member may come out of the engaging groove of the seat cushion pad.

[0013] The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a vehicle seat capable of stably maintaining, by a clip, a load applied to a pad when an airbag is deployed.

[0014] Technical means of solving problems

[0015] The above-mentioned problem can be solved by the following manner: the vehicle seat according to the present invention is a vehicle seat, which includes: a frame; a cushion arranged on the frame; a skin covering the cushion; an airbag device installed on the frame and having an airbag and an inflator; a guide member arranged on the inner surface side of the skin and at a position corresponding to the airbag device, and guiding the deployment of the airbag; and a snap-fit ​​member, which snaps the skin into the cushion, and the skin has: a central portion covering the central portion of the cushion in the seat width direction; a first side portion joined to an end portion of the central portion in the seat width direction; a second side portion joined to an outer end portion of the first side portion in the seat width direction; a first joining portion, The central portion is joined with the first side portion; and a second joining portion is joined with the first side portion and the second side portion, the first joining portion is engaged with the engaging member and is engaged with the cushion, a breaking portion is formed at the second joining portion which breaks when the airbag is deployed, the outer end portion of the guide member in the seat width direction, i.e., the first end portion, is joined with the first side portion at the breaking portion, and the inner end portion of the guide member in the seat width direction, i.e., the second end portion, is joined with the first side portion at the first joining portion, and the length of the engaging member in the up-down direction from the first upper end to the first lower end is longer than the length of the first end portion of the guide member in the up-down direction from the first upper end portion to the first lower end portion.

[0016] According to the above configuration, the load applied to the guide member (cloth patch) when the airbag is deployed can be stably maintained by the engaging member (clip) with a simple structure.

[0017] To describe in detail, when the airbag is deployed, when the force of cutting the broken portion (tear line) is applied to the broken portion, the guide member is supported by the snapping member, but since the vertical length from the upper end to the lower end of the snapping member is longer than the vertical length of the outer end of the guide member, the guide member can be stably held by the snapping member.

[0018] At this time, the first upper end portion of the guide member may be arranged above the first upper end of the locking member, and the length in the up-down direction between the first upper end portion of the guide member and the first upper end of the locking member may be shorter than the length in the up-down direction from the first upper end to the first lower end of the locking member.

[0019] With the above configuration, even when the length of the engagement groove cannot be ensured due to design constraints and the engagement member cannot be arranged at an ideal position, the eccentric load from the guide member can be stably supported by the engagement member.

[0020] At this time, the second upper end of the second end of the guide member may be arranged above the first upper end of the engaging member, and the second lower end of the second end of the guide member may be arranged below the first lower end of the engaging member.

[0021] According to the above configuration, the load applied to the guide member when the airbag is deployed can be more stably maintained by the engagement member with a simple structure.

[0022] At this time, the engaging member may also include: a first engaging member; and a second engaging member, which is arranged below the engaging member, and the guide member may include: a first guide member, which is arranged at a position corresponding to the height of the chest of the occupant on the seat and is engaged with the first engaging member; and a second guide member, which is arranged at a position corresponding to the height of the chest of the occupant on the seat and is engaged with the second engaging member, and the length of the second engaging member in the up-down direction from the second upper end to the second lower end is longer than the length of the outer side of the second guide member in the seat width direction from the third upper end to the third lower end in the up-down direction.

[0023] According to the above configuration, the load applied to the guide member when the airbag is deployed can be more stably maintained by the engagement member with a simple structure.

[0024] At this time, the locking member may also include: a first locking member; and a second locking member, which is arranged at a lower position than the locking member, and the guide member includes: a first guide member, which is arranged at a position corresponding to the height of the chest of the occupant on the seat and is engaged with the first locking member; and a second guide member, which is arranged at a position corresponding to the height of the chest of the occupant on the seat and is engaged with the second locking member, the gas blowing part of the inflator is arranged at a position closer to the first guide member than the second guide member, and the length of the outer side of the second guide member in the seat width direction from the third upper end to the third lower end in the up-down direction is longer than the length from the first upper end to the first lower end in the up-down direction.

[0025] Through the above structure, since the first guide member is located near the high-pressure gas injection port of the inflator, it is easy to cut the broken part. The second guide member is located away from the high-pressure gas injection port of the inflator, and the broken part can be easily cut by lengthening the upper and lower lengths of the end portion on the broken part side.

[0026] At this time, the locking member may also include: a first locking member; and a second locking member, which is arranged at a lower position than the locking member, and the guide member includes: a first guide member, which is arranged at a position corresponding to the height of the chest of the occupant on the seat and is engaged with the first locking member; and a second guide member, which is arranged at a position corresponding to the height of the chest of the occupant on the seat and is engaged with the second locking member, the gas blowing part of the inflator is arranged at a position closer to the second guide member than the first guide member, and the length of the outer side of the second guide member in the seat width direction from the third upper end to the third lower end in the up-down direction is longer than the length from the first upper end to the first lower end in the up-down direction.

[0027] According to the above structure, since the second guide member is located near the high-pressure gas injection port of the inflator, the fracture portion can be cut more easily.

[0028] At this time, the locking member may also include: a first locking member; and a second locking member, which is arranged below the locking member, the second locking member includes: an upper locking member; an intermediate locking member, which is arranged below the upper locking member; and a lower locking member, which is arranged below the intermediate locking member, the guide member includes: a first guide member, which is arranged at a position corresponding to the height of the chest of the occupant on the seat and is engaged with the first locking member; and a second guide member, which is arranged at a position corresponding to the height of the chest of the occupant on the seat and is engaged with the second locking member, and the length of the outer side of the second guide member in the seat width direction from the third upper end to the third lower end in the up-down direction is longer than the length from the first upper end to the first lower end in the up-down direction.

[0029] According to the above configuration, by increasing the number of engagement members for fixing the second guide member having a longer vertical length at the end portion on the rupture portion side, the load applied to the guide member when the airbag is deployed can be more stably maintained by the engagement members.

[0030] Effects of the Invention

[0031] According to the present invention, the load applied to the guide member (cloth patch) when the airbag is deployed can be stably maintained by the engaging member (clip) with a simple structure.

[0032] Furthermore, according to the present invention, even when the length of the engagement groove cannot be ensured due to design constraints and the engagement member cannot be arranged at an ideal position, the eccentric load from the guide member can be stably supported by the engagement member.

[0033] Furthermore, according to the present invention, the load applied to the guide member when the airbag is deployed can be more stably maintained by the engagement member with a simple structure.

[0034] Furthermore, according to the present invention, the fractured portion can be easily cut.

[0035] In addition, according to the present invention, the fractured portion can be cut more easily.

[0036] Furthermore, according to the present invention, the load applied to the guide member when the airbag is deployed can be more stably maintained by the engaging member. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] [ Figure 1 ] is a three-dimensional view of the vehicle seat of the first embodiment.

[0038] [ Figure 2 ] is a front view of the seat back, showing the state after the cover is removed.

[0039] [ Figure 3 ] is a partial enlarged view of the seat back.

[0040] [ Figure 4 ]yes Figure 2 IV-IV cross-sectional view of the .

[0041] [ Figure 5 ] is a front view of the seat back of a modified example.

[0042] [ Figure 6 ] is a three-dimensional view of the seat of the second embodiment.

[0043] [ Figure 7 ] is a cross-sectional view of the embedding portion of the first embodiment (a cross-section orthogonal to the extension direction of the embedding groove).

[0044] [ Figure 8 ] is a three-dimensional view of the engaging component and the position deviation suppression component of the first embodiment.

[0045] [ Fig. 9 ] is a stereoscopic view of the engaging component and the position deviation suppression component of the second embodiment.

[0046] [ Fig.10 ] is a three-dimensional view of the engaging component and the position deviation suppression component of the third embodiment.

[0047] [ Fig.11 ] is a three-dimensional view of the engaging component and the position deviation suppression component of the fourth embodiment.

[0048] [ Fig.12 ] is a development view of the position deviation suppression member of the fourth embodiment.

[0049] [ Fig.13 ] is along Fig.11 Cross-sectional view along line XIII-XIII.

[0050] [ Fig.14 ] is a partial sectional side view of the locking portion of the fourth embodiment.

[0051] [ Fig.15 ] is a side view of a partial cross-section (a cross-section orthogonal to the width direction of the embedding groove) of the embedding portion of the fifth embodiment.

[0052] [ Fig.16 ] is a side view of a partial cross-section (a cross-section orthogonal to the width direction of the card embedding groove) of the sixth embodiment. DETAILED DESCRIPTION

[0053] <First embodiment>

[0054] Below, refer to Figure 1 to Figure 5 , a first embodiment of the present invention is described.

[0055] In the following description, the "front-rear direction" refers to the front-rear direction of the vehicle seat, which is the direction that coincides with the traveling direction of the vehicle when the vehicle is traveling. In addition, the "seat width direction" refers to the width direction of the vehicle seat, which is the direction that coincides with the left-right direction as viewed by the occupant sitting on the vehicle seat. In addition, the "up-down direction" refers to the up-down direction of the vehicle seat, which is the direction that coincides with the vertical direction when the vehicle is traveling on a horizontal plane.

[0056] <<Overall structure of the seat>>

[0057] like Figure 1 As shown, the vehicle seat S1 of this embodiment is a seat placed on the vehicle body floor for the passengers of the vehicle to sit. In this embodiment, the vehicle seat S1 is used as a front seat equivalent to the front seat of the vehicle. However, it is not limited to this, and the vehicle seat S1 can also be a rear seat of the vehicle. In addition, in a vehicle including three rows of seats in the front and rear direction, it can also be used as a middle seat of the second row or a rear seat of the third row.

[0058] like Figure 1 , Figure 2 As shown, the vehicle seat S1 is mainly composed of the following components: a seat body having a seat cushion 1 , a seat back 2 , and a headrest 3 ; and an airbag device 4 .

[0059] The vehicle seat S1 is provided with a seat frame F inside. The seat cushion 1 and the seat back 2 include a pad 10 disposed on the seat frame F and a cover 20 covering the pad 10. The seat back 2 includes a pad 30 (guide member) on the inner surface side (pad 10 side) of the cover 20 and at a location corresponding to the airbag device 4.

[0060] The gasket 10 has a clamp 40 (engagement member) for engaging with the skin 20. The skin 20 has a mounting member 50 engaged with the clamp 40. The skin 20 is fixed to the gasket 10 by engaging and fitting the mounting member 50 with the clamp 40.

[0061] Furthermore, although the clamp 40 is exemplified as the engaging member, the present invention is not limited thereto, and the skin 20 and the gasket 10 may be engaged with each other using a wire member.

[0062] like Figure 1 As shown, the seat cushion 1 is a seat portion that supports an occupant from below, and is configured by placing a pad 10 on a cushion frame (not shown) that forms a framework of the seat cushion 1 and covering the pad 10 with a cover 20 .

[0063] The seat back 2 is a backrest that supports the back of the occupant from behind. Figure 4 The seat frame F (back frame) shown is configured by placing a cushion 10 thereon and covering the cushion with a cover 20 .

[0064] The seat back 2 includes a back center portion 2 a for supporting an occupant from behind and a bank portion 2 b for supporting the occupant from the side.

[0065] The headrest 3 supports the head of the occupant from behind, and is formed by placing a cushion material on a pillar (not shown) serving as a core material and covering the cushion material.

[0066] like Figure 1 , Figure 2 , Figure 4 As shown, the airbag device 4 includes a known structure, is mounted on the seat frame F, and is arranged inside the bank portion 2 b of the seat back 2 and inside the skin 20 .

[0067] The airbag device 4 comprises: an airbag 4a; an inflator 4b, which supplies gas to the airbag 4a; a gas blowing portion 4c, which sprays gas into the airbag 4a; a shell 4d, which covers the airbag 4a, the inflator 4b and the gas blowing portion 4c; and a fixture 4e, which fixes the shell 4d to the seat frame F.

[0068] like Figure 4As shown, the airbag device 4 is mounted on the right side of the seat frame F (outside the vehicle seat S1) by means of a fixing device 4e such as a bolt, and is accommodated inside the cushion 10. When the airbag 4a is expanded outward from the housing 4d by ejecting gas from the gas blowing portion 4c by the inflator 4b, the cushion 10 is broken, and the surface skin 20 is cut, and the airbag 4a is deployed outward.

[0069] <<Padding>>

[0070] The cushion 10 has a cushioning portion formed of a foam, and the cushioning portion is covered by a skin 20. As the foam, polypropylene bead foam, polyethylene bead foam, polypropylene foam, polyethylene foam, acrylonitrile-styrene foam, ethylene vinyl acetate copolymer resin, urethane foam material, etc., or a combination thereof can be used. In the present embodiment, the cushion 10 is a urethane cushion formed by foaming using a urethane foaming agent.

[0071] like Figure 2 As shown, the cushion 10 of the seat back 2 is formed with two engaging grooves 10a extending in the longitudinal direction of the seat and a transverse engaging groove 10b extending in the width direction of the seat. The transverse engaging groove 10b connects the upper ends of the two engaging grooves 10a. In addition, the arrangement of the engaging grooves 10a and the transverse engaging grooves 10b is an example, and the transverse engaging groove 10b can also be arranged between the two engaging grooves 10a to form a substantially H-shaped when viewed from the front of the seat.

[0072] A plurality of clamps 40 are provided at predetermined intervals inside the locking groove 10a. Figure 4 As shown, the clamp 40 is fixed to the gasket 10 by partially embedding the clamp 40 in the bottom of the engaging groove 10a.

[0073] like Figure 4 As shown, the pad 10 of the seat back 2 is provided with a housing portion 10 c for housing the airbag device 4 and a slit 10 d for making the pad 10 easily breakable.

[0074] The housing portion 10c is a space for housing the airbag device 4 mounted on the seat frame F. The slit 10d is a portion that is broken by the airbag 4a that expands from the housing 4d.

[0075] <<Epidermis>>

[0076] The cover 20 is made of cloth, film, fabric, leather, sheet or the like, and is attached so as to cover the pad 10 in a state where it is stretched so as to apply a predetermined tension.

[0077] like Figure 1 , Figure 4As shown, the skin 20 covering the seat back 2 has: a central portion 21 covering the front side of the central portion 2a of the backrest; a first side portion 22 covering the inner side (passenger side) of the embankment 2b in the seat width direction; and a second side portion 23 covering the outer side of the embankment 2b in the seat width direction.

[0078] The first side portion 22 is joined to an end portion 21a on the outer side in the seat width direction of the center portion 21. The second side portion 23 is joined to a first side portion outer end portion 22b on the outer side in the seat width direction of the first side portion 22.

[0079] like Figure 1 , Figure 4 As shown, the first joint portion 24 (joint portion) that joins the center portion 21 and the first side portion 22 connects the end portion 21 a of the center portion 21 and the first side portion inner end portion 22 a by sewing.

[0080] The second joint portion 25 (joined portion) joining the first side portion 22 and the second side portion 23 connects the first side portion outer end 22b and the front end 23a of the second side portion 23 by sewing. The second joint portion 25 has a breaking portion 25a (tear line) that breaks when the airbag 4a is deployed.

[0081] Furthermore, the rear end portion 23 b of the second side portion 23 is connected to the skin back surface portion 26 on the back surface side of the cover pad 10 via a wire fastener 27 .

[0082] <<Cloth>>

[0083] The pad 30 is a guide member for guiding the deployment of the airbag 4a. Figure 1 to Figure 4 As shown, the patch cloth 30 is disposed on the inner surface side (pad 10 side) of the cover 20 and at a location corresponding to the airbag device 4 .

[0084] The cloth pad 30 includes an inner cloth pad (a chest cloth pad 31 and a waist cloth pad 34) provided along the first side portion 22 and an outer cloth pad 37 provided along the second side portion 23. The inner cloth pad is divided into upper and lower parts and includes a chest cloth pad 31 (a first guide member) provided at the height of the chest of the occupant and a waist cloth pad 34 (a second guide member) provided below the chest cloth pad 31 and at the height of the waist of the occupant.

[0085] The pad 30 is also called an inner pad, and is formed of a material having a smaller tensile elongation than the outer skin 20. In other words, the pad 30 is formed of a sheet member that is less elastic than the outer skin 20. Therefore, the pad 30 can transfer the force applied when the airbag 4a is deployed to the tear line, i.e., the rupture portion 25a, thereby promoting the deployment of the airbag 4a.

[0086] like Figure 1 , Figure 2As shown, one end of the cloth pad 30 in the seat width direction is joined to the first side portion 22 at the break portion 25a of the second joint portion 25, and the other end of the cloth pad 30 in the seat width direction is joined to the first side portion 22 at the first joint portion 24. The cloth pad 30 is engaged with the surface skin 20 and fixed to the cushion 10 by engaging the mounting member 50 with the clamp 40.

[0087] The chest cloth pad 31 is fixed to the skin 20 by sewing the outer end portion (chest cloth outer end portion 32) in the seat width direction to the first side outer end portion 22b of the first side portion 22 at the second joint portion 25, and sewing the inner end portion (chest cloth inner end portion 33) in the seat width direction to the first side inner end portion 22a of the first side portion 22 at the first joint portion 24. The chest cloth pad 31 is sewn together with the skin 20 and the mounting member 50, and is therefore fixed to the pad 10 by engaging and fitting the mounting member 50 with the clamp 40.

[0088] The waist cloth pad 34 is fixed to the cover 20 by sewing one end portion (waist cloth pad outer end portion 35) in the seat width direction to the first side portion outer end portion 22b of the first side portion 22 at the second joint portion 25, and sewing the other end portion (waist cloth pad inner end portion 36) to the first side portion inner end portion 22a of the first side portion 22 at the first joint portion 24. The waist cloth pad 34 is sewn together with the cover 20 and the mounting member 50, and is fixed to the pad 10 by engaging and fitting the mounting member 50 with the clamp 40.

[0089] Regarding the outer pad 37, the front end portion in the front-to-rear direction of the seat (the front end portion 37a of the outer pad) is sewn together with the front end portion 23a of the second side portion 23 at the second joint portion 25, and the rear end portion (the rear end portion 37b of the outer pad) is sewn together with the rear end portion 23b of the second side portion 23, thereby being fixed to the surface skin 20.

[0090] When the airbag 4a is inflated by the airbag device 4, the expansion energy of the airbag 4a is transmitted to the pad 30 via the liner 10. When the chest pad 31, the waist pad 34, and the outer pad 37 receive the expansion energy of the airbag 4a, the expansion energy of the airbag 4a is concentrated on the sewing line of the second joint 25 (breaking part 25a), and the sewing line is cut. Then, the chest pad 31, the waist pad 34, and the outer pad 37 are cut at the second joint 25, and the liner 10 is broken at the slit 10d, so that the airbag 4a is deployed to the outside.

[0091] Here, the gas blowing portion 4c of the inflator 4b of the airbag device 4 is arranged closer to the chest cloth 31 than the waist cloth 34. That is, the chest cloth 31 is more susceptible to the load caused by the airbag 4a than the waist cloth 34. Therefore, the breaking portion 25a near the chest cloth 31 is easier to cut than the breaking portion 25a near the waist cloth 34.

[0092] <<Clamp>>

[0093] like Figure 4 As shown, the clamp 40 is an engaging member having a substantially V-shaped cross section. The clamp 40 has a holding portion 40a for holding the mounting member 50. The clamp 40 may also have a U-shaped or C-shaped cross section.

[0094] The clamp 40 is made of resin, for example, polyacetal (POM), polypropylene (PP), polyamide (PA), polycarbonate (PC), etc. In addition, the clamp 40 can be made of POM resin having relatively high strength.

[0095] like Figure 2 As shown, a plurality of clips 40 are provided at predetermined intervals inside the engagement groove 10a of the gasket 10. The clips 40 are integrally formed during the foaming of the gasket 10, and thus are attached to the gasket 10 in a state of being buried inside the gasket 10.

[0096] The skin 20 and the pad 30 are fixed to the pad 10 by engaging and fitting the mounting member 50 with the clamp 40 at the first joint portion 24 provided at a position corresponding to the locking groove 10a. In addition, the clamp 40 may also be provided in the transverse locking groove 10b.

[0097] like Figure 1 , Figure 2 As shown, at the right bank 2b of the seat back 2 in the seat width direction, i.e., the portion corresponding to the airbag device 4, the clamp 40 has: a first engaging member (a first clamp 41, a second clamp 42), which engages the chest pad 31 to the pad 10; and a second engaging member (a third clamp 43, a fourth clamp 44, a fifth clamp 45), which is arranged below the first engaging member and engages the waist pad 34 to the pad 10.

[0098] The chest cloth 31 is engaged with the first and second clamps 41 and 42 and is fitted to the pad 10. The waist cloth 34 is engaged with the third, fourth and fifth clamps 43, 44 and 45 arranged below the first and second clamps 41 and 42 and is fitted to the pad 10.

[0099] The first clamp 41 is engaged with the upper portion of the inner end portion 33 of the chest cloth to fix the chest cloth 31 to the pad 10 .

[0100] The second clamp 42 is provided below the first clamp 41 , and is engaged with the lower portion of the inner end portion 33 of the chest cloth to fix the chest cloth 31 to the pad 10 .

[0101] The third clamp 43 (upper engaging member) is engaged with the upper portion of the inner end portion 36 of the waist cloth patch to fix the waist cloth patch 34 to the pad 10 .

[0102] The fourth clamp 44 (intermediate engaging member) is provided below the third clamp 43 , and is engaged with the center portion of the inner end portion 36 of the waist cloth pad in the vertical direction to fix the waist cloth pad 34 to the pad 10 .

[0103] The fifth clamp 45 (lower engaging member) is provided below the fourth clamp 44 , and is engaged with the lower portion of the inner end portion 36 of the waist cloth pad to fix the waist cloth pad 34 to the pad 10 .

[0104] <<Mounting components>>

[0105] like Figure 4 As shown in FIG. 1 , the mounting member 50 is a clip having a top portion with an arrow-shaped cross section. The mounting member 50 is made of resin, for example, polypropylene (PP) resin.

[0106] The mounting member 50 includes a top end portion 50a inserted into the holding portion 40a, and a base end portion 50b connected to the epidermis 20. The base end portion 50b is sewn together with the epidermis 20 and the chest pad 31 at the first joint portion 24. In addition, the mounting member 50 is indirectly connected to the epidermis 20 via a nonwoven fabric (not shown). One end side of the nonwoven fabric is fixed to the epidermis 20 at the first joint portion 24 by sewing, and the other end side of the nonwoven fabric is connected to the base end portion 50b of the mounting member 50 by sewing.

[0107] In this way, the cover 20 and the patch 30 are fixed to the gasket 10 by engaging and fitting the tip portion 50 a of the mounting member 50 with the holding portion 40 a of the clamp 40 at the first joint portion 24 .

[0108] <<Layout of mat and clamp>>

[0109] like Figure 2 , Figure 3As shown, the length L1 of the chest pad outer end 32 of the chest pad 31 from the first upper end 32a to the first lower end 32b in the vertical direction is shorter than the length L2 from the first clamp upper end 41a of the first clamp 41 to the second clamp lower end 42b of the second clamp 42 in the vertical direction.

[0110] Therefore, when the airbag 4a is deployed, when a force for cutting the rupture portion 25a is applied to the rupture portion 25a, since the length L2 from the first clamp upper end 41a to the second clamp lower end 42b is longer than the length L1 from the first upper end 32a to the first lower end 32b, the chest pad 31 can be stably held by the first clamp 41 and the second clamp 42.

[0111] At this time, if Figure 3 As shown, the first upper end 32a of the chest pad 31 is arranged above the first clamp upper end 41a of the first clamp 41. Moreover, the length L3 in the vertical direction between the first upper end 32a and the first clamp upper end 41a is shorter than the length L2 in the vertical direction from the first clamp upper end 41a of the first clamp 41 to the second clamp lower end 42b of the second clamp 42.

[0112] Therefore, the eccentric load from the chest pad 31 can be stably supported by the first clamp 41 and the second clamp 42 .

[0113] In addition, if Figure 3 As shown, the second upper end 33a of the chest pad inner end 33 of the chest pad 31 is arranged above the first clamp upper end 41a, and the second lower end 33b is arranged below the second clamp lower end 42b.

[0114] Therefore, when the clip 40 is embedded in the pad 10 , even if the position of the clip 40 is displaced due to foam molding of the pad 10 , the chest pad 31 can be stably held by the first clip 41 and the second clip 42 .

[0115] A vertical length L4 of the waist cloth outer end 35 of the waist cloth 34 from the third upper end 35a to the third lower end 35b is shorter than a vertical length L5 from the third clamp upper end 43a of the third clamp 43 to the fifth clamp lower end 45b of the fifth clamp 45.

[0116] Therefore, when the airbag 4a is deployed, when the force of cutting the broken portion 25a is applied to the broken portion 25a, since the length L5 from the upper end portion 43a of the third clamp to the lower end portion 45b of the fifth clamp is longer than the length L4 from the third upper end portion 35a to the third lower end portion 35b, the waist pad 34 can be stably held by the third clamp 43 and the fifth clamp 45.

[0117] A vertical length L4 of the waist outer end 35 of the waist pad 34 from the third upper end 35a to the third lower end 35b is longer than a vertical length L1 of the chest outer end 32 of the chest pad 31 from the first upper end 32a to the first lower end 32b.

[0118] Since the chest cloth 31 is arranged near the gas blowing part 4c of the inflator 4b, the chest cloth 31 can easily cut the break portion 25a. In addition, the waist cloth 34 located away from the gas blowing part 4c of the inflator 4b can easily cut the break portion 25a by making the length L4 of the waist cloth outer end 35 longer than the length L1 of the chest cloth outer end 32.

[0119] In this way, when the pad 30 receives the expansion energy of the airbag 4a, the expansion energy can be received by the clamp 40 via the nonwoven fabric at the first joint portion 24. At this time, since a plurality of clamps 40 are arranged at equal intervals in the vertical direction along the engaging groove 10a, the load can be supported in a well-balanced manner. In addition, the interval between the clamps 40 is preferably 40 mm to 65 mm.

[0120] The first and second clips 41 and 42 are contained within the vertical length range of the chest pad 31 , and the third, fourth, and fifth clips 43 , 44 , and 45 are contained within the vertical length range of the waist pad 34 .

[0121] Moreover, in the chest pad 31, the first upper end 32a of the chest pad outer end 32 is arranged above the second upper end 33a of the chest pad inner end 33, and the first lower end 32b of the chest pad outer end 32 is arranged above the second lower end 33b of the chest pad inner end 33, so that the first pad is arranged obliquely as a whole.

[0122] Furthermore, the expansion energy of the airbag 4 a can be received by the second side portion 23 on the side of the outer cloth rear end portion 37 b .

[0123] <<Modification>>

[0124] Next, based on Figure 5 A modification of the vehicle seat S1 will be described. Note that description of the same contents as those of the vehicle seat S1 will be omitted.

[0125] In the vehicle seat S1 of the modified example, the gas blowing portion 4c of the inflator 4b of the airbag device 4 is arranged closer to the waist cloth pad 34 than the chest cloth pad 31. That is, the waist cloth pad 34 is more susceptible to the load caused by the airbag 4a than the chest cloth pad 31. Therefore, the breaking portion 25a near the waist cloth pad 34 is easier to cut than the breaking portion 25a near the chest cloth pad 31.

[0126] Thus, since the waist cloth pad 34 is arranged near the gas blowing part 4c of the inflator 4b, the chest cloth pad 31 can easily cut the rupture part 25a. In addition, the waist cloth pad 34 located near the gas blowing part 4c of the inflator 4b can be cut more easily by making the length L4 of the waist cloth pad outer end 35 longer than the length L1 of the chest cloth pad outer end 32.

[0127] <<Manufacturing method>>

[0128] A method for manufacturing the vehicle seat S1 will be described.

[0129] First, a seat frame F (back frame) of the seat back 2 is prepared. On the right side of the seat frame F, the airbag device 4 including the airbag 4a and the inflator 4b is mounted using a fixture 4e such as a bolt.

[0130] Then, the pad 10 is disposed on the seat frame F to which the airbag device 4 is mounted. At this time, the airbag device 4 is accommodated in the accommodation portion 10 c of the pad 10 .

[0131] The skin 20 is provided with a patch 30 on the inner side thereof for guiding the deployment of the airbag 4a. The patch 30 is arranged at a position corresponding to the airbag device 4 and the patch 30 is attached to the inner side of the skin 20 by sewing the skin 20 and the patch 30 together.

[0132] Then, the cushion 10 is covered with the cover 20 to which the patch cloth 30 is attached, and the cover 20 is fitted to the cushion 10 via the clamp 40 .

[0133] In the sequence of engaging the epidermis 20 into the liner 10 via the clamp 40, the first joining portion 24 of the epidermis 20 is engaged and engaged into the clamp 40 whose length in the vertical direction from the first clamp upper end 41a to the second clamp lower end 42b is longer than the length in the vertical direction from the first upper end 32a to the first lower end 32b of the chest padding outer end 32 of the pad 30.

[0134] In addition, the skin 20 has: a central portion 21, which covers the central portion of the cushion 10 in the seat width direction, that is, the central portion 2a of the backrest; a first side portion 22, which is joined to an end portion 21a of the central portion 21 in the seat width direction; a second side portion 23, which is joined to an outer end portion 22b of the first side portion 22 in the seat width direction; a first joining portion 24, which joins the central portion 21 with the first side portion 22; and a second joining portion 25, which joins the first side portion 22 with the second side portion 23.

[0135] The first joining portion 24 is engaged with the clip 40 and is fitted to the pad 10 , and a breaking portion 25 a that breaks when the airbag 4 a is deployed is formed in the second joining portion 25 .

[0136] The chest cloth outer end portion 32 of the cloth patch 30 is joined to the first side portion 22 at the break portion 25 a , and the chest cloth inner end portion 33 of the cloth patch 30 is joined to the first side portion 22 at the first joining portion 24 .

[0137] Furthermore, the gas blowing portion 4 c of the inflator 4 b may be disposed closer to the chest cloth 31 than the waist cloth 34 .

[0138] In addition, the gas blowing portion 4c of the inflator 4b may be arranged at a position closer to the waist cloth pad 34 than the chest cloth pad 31.

[0139] In addition, the first upper end portion 32a is arranged above the first clamp upper end portion 41a, and the length in the vertical direction between the first upper end portion 32a and the first clamp upper end portion 41a can be shorter than the length in the vertical direction from the first clamp upper end portion 41a to the second clamp lower end portion 42b.

[0140] In addition, the second upper end portion 33a may be arranged above the first clamp upper end portion 41a, and the second lower end portion 33b may be arranged below the second clamp lower end portion 42b.

[0141] Furthermore, the length in the vertical direction from the third clamp upper end portion 43a to the fifth clamp lower end portion 45b may be longer than the length in the vertical direction from the third upper end portion 35a to the third lower end portion 35b.

[0142] Furthermore, the length in the up-down direction from the third upper end portion 35a to the third lower end portion 35b may be longer than the length in the up-down direction from the first upper end portion 32a to the first lower end portion 32b.

[0143] The method for manufacturing the vehicle seat S1 is as follows.

[0144] A method for manufacturing a vehicle seat, comprising:

[0145] Prepare the framework,

[0146] An airbag device having an airbag and an inflator is installed on the frame.

[0147] A pad is arranged on the frame,

[0148] A skin having a guide member provided on the inner side thereof for guiding the deployment of the airbag is prepared.

[0149] The guide member is arranged at a position corresponding to the airbag device, and the cushion is covered with the skin.

[0150] The skin is engaged with the liner via an engaging member,

[0151] The skin has: a central portion covering a central portion of the cushion in a seat width direction; a first side portion joined to an end portion of the central portion in a seat width direction; a second side portion joined to an outer end portion of the first side portion in a seat width direction; a first joining portion joining the central portion to the first side portion; and a second joining portion joining the first side portion to the second side portion.

[0152] The first engaging portion is engaged with the engaging member and is engaged with the gasket.

[0153] The second joint portion has a breaking portion formed therein to break when the airbag is deployed.

[0154] The first end portion of the guide member, which is an outer end portion in the seat width direction, is joined to the first side portion at the break portion.

[0155] The second end portion, which is an inner end portion of the guide member in the seat width direction, is engaged with the first side portion at the first engagement portion.

[0156] The operation of snapping the skin into the pad via the snap-fitting member includes snapping and snapping the first joining portion of the skin into the snap-fitting member whose length in the up-down direction from the first upper end to the first lower end is longer than the length of the first end portion of the guide member in the up-down direction from the first upper end to the first lower end.

[0157] In the above-described embodiment, a vehicle seat used in a car is described as a specific example, but the invention is not particularly limited thereto and can be used for two-wheeled seats for two-wheeled vehicles, vehicle seats for trains or buses, seats for transportation vehicles such as airplanes or ships, and various other seats such as office chairs for work, wheelchairs, and children's chairs for shopping carts.

[0158] In the present embodiment, the vehicle seat of the present invention is mainly described.

[0159] The above-described embodiment is merely an example for facilitating understanding of the present invention and does not limit the present invention. The present invention can of course be changed and improved without departing from the gist thereof, and the present invention includes equivalents thereof.

[0160] <Second embodiment>

[0161] Below, refer to Figure 6 to Figure 16 A second embodiment of the present invention will be described.

[0162] A second embodiment relates to a vehicle seat in which a surface material is locked to a clamp at a locking portion, and a method for locking the surface material.

[0163] In order to maintain the appearance of vehicle seats, linear recessed engaging portions are sometimes provided on the seating surfaces of the seat cushion and the seat back (for example, Japanese Patent Application Publication No. 2011-069417 and Japanese Patent Application Publication No. 2013-132328).

[0164] Japanese Patent Laid-Open No. 2011-069417 discloses a structure in which a locking groove is concavely provided on a seating surface of a cushion, and a locking portion is formed by fixing a locking member installed on a surface material and extending in the extending direction of the locking groove to a clamp fixed to the cushion using the bottom of the locking groove. The locking member includes a skin connecting portion (hanging cotton cloth) installed on the surface material, and a bulging portion (hook) connected to the lower side edge of the skin connecting portion and bulging in the width direction of the locking groove, and the bulging portion is locked to the clamp.

[0165] In addition, in Japanese Patent Gazette No. 2013-132328, regarding the same locking portion as described above, there is recorded a locking component (introduction component) including an epidermal connecting portion (installation portion) and a locking component that is locked in the bulging portion of the clamp, and the locking component is prevented from falling off by inserting the top end of the clamp into the hole portion provided in the epidermal connecting portion.

[0166] However, in the structure described in Japanese Patent Laid-Open No. 2011-069417, the engaging member may be offset in the extension direction of the engaging groove, and the appearance of the vehicle seat may be damaged. In the structure described in Japanese Patent Laid-Open No. 2013-132328, by inserting the top end of the clamp into the hole, not only the engaging member is prevented from falling off from the engaging groove, but also the engaging member is prevented from being offset in the extension direction of the engaging groove. However, it is necessary to accurately match the position of the top end of the clamp with the hole, and the position of the top end of the clamp may be offset from the hole due to construction errors. Therefore, since the top end of the clamp is inserted into the hole at a position offset from the original position in the extension direction of the engaging groove, or since the top end of the clamp is assembled without being inserted into the hole and then offset in a direction away from the hole relative to the original position, the appearance of the vehicle seat may be damaged.

[0167] In view of the above background, an object of the present invention is to provide a vehicle seat including an engaging portion that can suppress displacement of an engaging member in the extending direction of an engaging groove and that can facilitate position adjustment.

[0168] In order to solve the above-mentioned problem, a certain form of a vehicle seat of the present invention includes: a cushion as a buffer body, having an embedding groove recessed in a seating surface; a surface material stretched on the seating surface of the cushion; a clamp including a substrate and a locking piece, wherein the substrate is buried in a portion of the cushion located at the bottom of the embedding groove, and the locking piece is upright from the substrate and is formed with a locking claw located in the embedding groove; an embedding member including a surface connecting portion and a bulging portion, wherein the surface connecting portion is in the shape of a strip extending in the extension direction of the embedding groove and is connected to the surface material at one side edge, and the bulging portion is arranged at the other side edge of the surface connecting portion in a manner that bulges in the width direction of the embedding groove and is locked to the locking claw of the clamp; and a position deviation suppression member, which is fixed to the surface connecting portion by sewing and has an end face that can abut against the locking piece and faces the extension direction.

[0169] According to the above aspect, the end surface of the position deviation suppression member abuts against the locking piece, thereby suppressing the displacement of the locking member in the extending direction. In addition, since the position deviation suppression member is fixed to the skin connection portion by sewing, the position relative to the clamp can be easily adjusted.

[0170] In the above aspect, the positional deviation suppressing member may be formed by a portion in which a longitudinal end of the engaging member is folded onto a main body of the engaging member.

[0171] According to the above aspect, one component includes a portion constituting the main body of the engaging member and a portion constituting the positional deviation suppressing member, and thus an increase in the number of components can be suppressed.

[0172] In the above aspect, the bulging portion may be cut off between the main body and the positional deviation suppression member.

[0173] According to the above aspect, since the bulging portion is cut off, it is easy to fold the positional deviation suppression member onto the main body of the engaging member.

[0174] In the above aspect, the positional deviation suppression member may be a member independent of the engaging member.

[0175] According to the above-mentioned form, a simple structure can be used to form a clamping portion that can suppress the positional deviation of the clamping member in the extension direction of the clamping groove and can be easily adjusted. In addition, a positional deviation suppression member can be provided not only for the clamp arranged near the end of the extension direction of the clamping groove, but also for the clamp arranged in the middle part.

[0176] In the above aspect, the positional deviation suppression member and the engaging member may be formed of the same material.

[0177] According to the above aspect, since the material of the positional deviation suppression member and the material of the engaging member are the same, the time and effort required to manufacture the positional deviation suppression member is reduced.

[0178] In the above aspect, the positional deviation suppression member may be configured to overlap the engaging member from both sides in the width direction so as to surround the bulging portion and to have an opening defining the end surface.

[0179] According to the above aspect, positional deviation in two directions in the extending direction can be suppressed with a simple structure.

[0180] One aspect of the present invention is a method for engaging the skin material of the vehicle seat of the aspect, the method comprising: fixing the positional deviation suppression member to the skin connection portion by sewing; and engaging the bulging portion to the engaging claw.

[0181] According to the above aspect, the positional deviation suppressing member can suppress the displacement of the engaging member in the extending direction, and the positional deviation suppressing member can be fixed to the skin connecting portion by sewing, so the position relative to the clamp can be easily adjusted.

[0182] In the above-mentioned form, it also includes: a step of setting the position deviation suppression member by folding the long side end of the embedding member onto the main body of the embedding member, and the fixing step includes: fixing the surface connecting part of the position deviation suppression member to the surface connecting part of the main body by sewing.

[0183] According to the above aspect, one component includes a portion constituting the main body of the engaging member and a portion constituting the positional deviation suppressing member, and thus an increase in the number of components can be suppressed.

[0184] In the above aspect, the step of providing the engaging member may include: cutting the bulging portion between the main body and the positional deviation suppression member.

[0185] According to the above aspect, since the bulging portion is cut off, it is easy to fold the positional deviation suppression member onto the main body of the engaging member.

[0186] In the above aspect, the step of providing the positional deviation suppression member includes: cutting the bulging portion between the main body and the positional deviation suppression member.

[0187] According to the above aspect, since the bulging portion is cut off, it is easy to fold the positional deviation suppression member onto the main body of the engaging member.

[0188] In the above aspect, the positional deviation suppression member may be a member independent of the engaging member.

[0189] According to the above-mentioned form, a simple structure can be used to form a clamping portion that can suppress the positional deviation of the clamping member in the extension direction of the clamping groove and can be easily adjusted. In addition, a positional deviation suppression member can be provided not only for the clamp arranged near the end of the extension direction of the clamping groove, but also for the clamp arranged in the middle part.

[0190] In the above-mentioned form, it may also include: a step of making a material including the epidermal connecting portion and the bulging portion; and a step of cutting the material to make the embedding component and the position deviation suppression component, and the fixing step includes: fixing the epidermal connecting portion of the position deviation suppression component to the epidermal connecting portion of the embedding component by sewing.

[0191] According to the above aspect, since the material of the positional deviation suppression member and the material of the engaging member are the same, the time and effort required to manufacture the positional deviation suppression member is reduced.

[0192] In the above-mentioned form, the position deviation suppression member may also have an opening defining the end face and be flexible, and the fixing step may include: overlapping the position deviation suppression member on the embedding member from both sides in the width direction and fixing it to the epidermis connecting portion by sewing in such a manner that the portion of the bulging portion that is locked to the locking claw is exposed through the opening and the position deviation suppression member surrounds the bulging portion.

[0193] According to the above aspect, positional deviation in two directions in the extending direction can be suppressed with a simple structure.

[0194] According to the above aspect, it is possible to provide a vehicle seat including a locking portion that can suppress displacement of the locking member in the extending direction of the locking groove and that can easily perform position adjustment.

[0195] According to the form in which the position deviation suppression member is composed of a portion in which the longitudinal end of the engaging member is folded onto the main body of the engaging member, since one part includes a portion constituting the main body of the engaging member and a portion constituting the position deviation suppression member, an increase in the number of parts can be suppressed.

[0196] In the above aspect, when the bulging portion is cut off between the main body and the positional deviation suppression member, it is easy to fold the positional deviation suppression member onto the main body of the engaging member.

[0197] Since the position deviation suppression component is a component independent of the embedding component, a embedding portion that can suppress the position deviation of the embedding component and easily adjust the position can be constructed with a simple structure, and a position deviation suppression component can be provided not only for a clamp arranged near the end portion in the extension direction of the embedding groove, but also for a clamp arranged in the middle portion.

[0198] In the above-described embodiment, when the positional deviation suppression member and the engaging member are formed of the same material, the time and effort required to manufacture the positional deviation suppression member is reduced.

[0199] In an embodiment in which the positional deviation suppression member is a member independent of the engaging member, when the positional deviation suppression member has an opening defining the end surface, positional deviation in two directions in the extending direction can be suppressed with a simple structure.

[0200] Hereinafter, the second embodiment will be described in detail with reference to the drawings.

[0201] Figure 6 1 is a perspective view of a vehicle seat S2 (hereinafter referred to as "seat S2") according to a second embodiment. The seat S2 includes a seat cushion 102 supported by the vehicle body, a seat back 103 connected to the seat cushion 102, and a headrest 104 connected to the seat back 103. The seat cushion 102, the seat back 103, and the headrest 104 each include a cushion 105 (see Figure 2 ), comprising a foamed resin such as foamed urethane; and a surface material 106 covering the seat surface of the cushion 105. On the surface of the seat surface of the seat cushion 102 and the seat back 103, a plurality of engaging portions 107 are formed in the longitudinal and transverse directions, and the engaging portions 107 are linearly recessed by engaging the surface material 106 into the cushion 105.

[0202] Figure 2The engaging portion 107 of the first example of the second embodiment is shown in a cross section perpendicular to the extending direction of the engaging portion 107. Figure 6 and Figure 7 As shown, the locking portion 107 of the seat S2 includes: a cushion 105 having a locking groove 108 recessed in the seating surface; a surface material 106 stretched on the seating surface of the cushion 105; a clamp 109 fixed to the cushion 105 in a manner configured in the locking groove 108; a locking component 110 connected to the surface material 106 and locked in the clamp 109; and a position deviation suppression component 111 combined with the locking component 110.

[0203] The cushion 105 is a buffer body made of a foamed resin such as foamed urethane. The engaging groove 108 opens toward the seat surface and includes a portion extending in the longitudinal direction (front-rear direction in the seat cushion 102 and up-down direction in the seat back 103) and a portion extending in the transverse direction (left-right direction). The depth of the engaging groove 108 is substantially constant, and the bottom surface of the engaging groove 108 extends on a substantially flat surface. Hereinafter, unless otherwise specified, the term "extension direction" and the term "width direction" refer to the extension direction and width direction of the engaging groove 108.

[0204] The surface material 106 is a component of the seat S2 (see Figure 6 ) is a component made of leather, cloth, etc. on the surface of the seating surface.

[0205] The clamp 109 includes a base plate 112 embedded in the portion of the liner 105 located at the bottom of the locking groove 108, and a pair of locking pieces 113 erected from the base plate 112. The clamp 109 is, for example, an injection molded product made of resin. The base plate 112 is generally flat and is arranged generally parallel to the bottom surface of the locking groove 108. The base plate 112 is entirely embedded in the liner 105, but may be arranged such that the two ends in the width direction are embedded in the liner 105, and the surface in the center in the width direction where the locking piece 113 is provided is exposed from the liner 105. The pair of locking pieces 113 face each other in the width direction and include: a vertical setting portion 114, which is vertically set from a portion of the substrate 112 that is closer to the inner side of the locking groove 108 in the width direction toward the opening of the locking groove 108; and a locking claw 115, which is formed in a manner of being inclined from the top of the vertical setting portion 114 toward the bottom surface of the locking groove 108 and extending toward the inner side in the width direction. The top ends of the pair of locking claws 115 are separated from each other in the width direction. The locking piece 113 can be elastically deformed in a manner that the distance between the top ends of the pair of locking claws 115 is expanded. That is, the vertical setting portion 114 can be elastically deformed in a manner that its top end faces the outer side in the width direction, and / or the locking claw 115 can be elastically deformed in a manner that its top end approaches the vertical setting portion 114.

[0206] The engaging member 110 is arranged in the engaging groove 108, and its long side direction is consistent with the extension direction of the engaging groove 108. The engaging member 110 includes: a strip-shaped skin connection part 116 extending along the long side direction of the engaging member 110; and a bulging part 117 extending along the long side direction of the engaging member 110 and connected to the side edge of the skin connection part 116. The skin connection part 116 is formed of a material that can be sewn, such as a non-woven fabric or a woven fabric. The skin connection part 116 is connected to the skin material 106 by sewing at the side edge part of the opening side of the engaging groove 108, and is connected to the bulging part 117 at the side edge part of the bottom side of the engaging groove 108. The bulging part 117 has a shape that bulges in the width direction relative to the skin connection part 116, and is locked in the locking claw 115. Therefore, the clamp 109 is configured such that the distance between the top ends of the pair of locking claws 115 is narrower than the width of the bulging portion 117 before elastic deformation, and can be greater than the width of the bulging portion 117 during elastic deformation. The bulging portion 117 is made of resin and formed by injection molding. The bulging portion 117 is connected to the epidermis connecting portion 116 by injection molding in a state where the epidermis connecting portion 116 is installed in the cavity of the mold. In addition, the engaging member 110 can also be composed of a resin that integrally molds the epidermis connecting portion 116 and the bulging portion 117.

[0207] Figure 8 1 is a perspective view showing the engaging member 110 and the position deviation suppression member 111. Figure 7 and Figure 8 As shown, the position deviation suppression member 111 is composed of a portion obtained by folding back the longitudinal end of the engaging member 110 onto the main body 110a of the engaging member 110 (including the portion engaged with the clamp 109 and extending on a substantially flat surface). The bulging portion 117 of the position deviation suppression member 111 is arranged adjacent to the bulging portion 117 of the main body 110a of the engaging member 110. The surface connecting portion 116 of the position deviation suppression member 111 is fixed to the surface connecting portion 116 of the main body 110a of the engaging member 110 by sewing at the side edge portion on the opening side of the engaging groove 108. In order to facilitate folding back the longitudinal end of the engaging member 110 as the position deviation suppression member 111, it is preferable to provide a cutout portion 118 between the main body 110a of the engaging member 110 and the position deviation suppression member 111 at the side edge portion on the side where the bulging portion 117 is provided. The bulging portion 117 is divided into the main body 110a side and the positional deviation suppression member 111 side by the cutout portion 118. Instead of the cutout portion 118, the side edge portion of the engaging member 110 on which the bulging portion 117 is provided may be cut to provide a slit (not shown) to thereby divide the bulging portion 117 into the main body 110a side and the positional deviation suppression member 111 side.

[0208] In the engaging groove 108 in which the engaging member 110 is housed, the engaging piece 113 of the clamp 109 disposed at the position closest to the position deviation suppression member 111 is located closer to the center side of the extending direction than the position deviation suppression member 111, and the end face 119 of the position deviation suppression member 111 facing the center side of the extending direction can abut against the side surface of the engaging piece 113 in the extending direction. The end face 119 can actually abut against the side surface of the engaging piece 113, or there can be a gap between the end face 119 and the side surface of the engaging piece 113. In the case of providing a gap, the distance between the end face 119 and the side surface of the engaging piece 113 is less than the length that allows the engaging member 110 to deviate in the extending direction. The end face 119 of the position deviation suppression member 111 can abut against the side surface of the engaging piece 113 at the epidermis connecting portion 116 or the bulging portion 117, or both.

[0209] A method of engaging the surface material 106 of the engaging portion 107 will be described.

[0210] The operator installs the jig 109 in a mold (not shown), injects a foaming resin raw material into the mold, and causes the raw material to foam and harden, thereby forming the gasket 105 in which the jig 109 is embedded.

[0211] The worker fixes the engaging member 110 to the surface material 106 by sewing (reference numeral 120 indicates a sewing thread used for sewing). The position deviation suppression member 111 is fixed to the surface material 106 by sewing together with the main body 110 a of the engaging member 110 . In addition, the position deviation suppression member 111 may be fixed to the overlapping portion of the surface material 106 and the surface connecting portion 116 of the main body 110a of the embedded member 110 by sewing after the main body 110a of the embedded member 110 is fixed to the surface material 106 by sewing. It may also be fixed to the surface connecting portion 116 of the main body 110a of the embedded member 110 by sewing instead of being fixed to the surface material 106 after the main body 110a of the embedded member 110 is fixed to the surface material 106 by sewing. It may also be first fixed to the surface connecting portion 116 of the main body 110a of the embedded member 110 by sewing and then fixed to the surface material 106 together with the main body 110a by sewing.

[0212] Next, the operator inserts the engaging member 110 from the bulging portion 117 into the engaging groove 108, and pushes the bulging portion 117 against the pair of locking claws 115 of the clamp 109, thereby elastically deforming the locking piece 113 of the clamp 109 in such a way as to expand the distance between the top ends of the pair of locking claws 115, and allowing the bulging portion 117 to pass between the top ends of the pair of locking claws 115. After the bulging portion 117 passes between the top ends of the pair of locking claws 115, the locking piece 113 returns to its original shape, thereby locking the bulging portion 117 to the locking claws 115.

[0213] Reference Figure 6 to Figure 8 The effects of the first embodiment of the second embodiment are described below. The protruding portion 117 is locked to the locking claw 115 to prevent the locking member 110 from being separated from the locking groove 108, thereby forming the locking portion 107.

[0214] The end face 119 of the positional deviation suppressing member 111 abuts against the side face of the locking piece 113 in the extending direction, thereby suppressing the positional deviation of the engaging member 110 in the extending direction in the direction in which the end face 119 faces. Therefore, the appearance of the seat S2 can be prevented from being damaged due to the positional deviation of the engaging member 110.

[0215] Since the means for fixing the position deviation suppression member 111 to the main body 110a of the engaging member 110 is sewing, the sewn thread 120 can be untied and sewn again, and the position of the position deviation suppression member 111 relative to the clamp 109 can be easily adjusted. In addition, when the position deviation suppression member 111 is fixed to the main body 110a of the engaging member 110 after the main body 110a of the engaging member 110 is fixed to the surface material 106, the position deviation suppression member 111 can be fixed to the main body 110a of the engaging member 110 after the position of the position deviation suppression member 111 relative to the clamp 109 is adjusted, so that the position of the position deviation suppression member 111 relative to the clamp 109 can be easily adjusted. In addition, when the end surface 119 of the position deviation suppression member 111 protrudes from the side surface of the locking piece 113 of the clamp 109 and exists closer to the center in the extension direction, the position of the position deviation suppression member 111 can be adjusted by cutting off the protruding portion.

[0216] Next, refer to Fig. 9 The second embodiment of the present invention will be described. In the description, for the structures common to the first embodiment, the description thereof is omitted and the same symbols are marked. In addition, in the description of the third embodiment and thereafter, for the structures common to the embodiments already described, the description thereof is also omitted and the same symbols are marked. Fig. 9 It is a perspective view showing the engaging member 110 and the positional deviation suppression member 111 of the engaging portion 121 .

[0217] In the first embodiment, the position deviation suppression member 111 is provided at only one end portion of the engaging member 110 in the long-side direction, but the engaging portion 121 and the position deviation suppression member 111 of the second embodiment are provided at both ends of the engaging member 110 in the long-side direction. Therefore, at one end portion in the long-side direction, the end surface 119 of the position deviation suppression member 111 can abut against the side surface of the locking piece 113 of the clamp 109 in the direction opposite to the other end portion. Therefore, the position deviation of the engaging member 110 in both directions with respect to the extending direction of the engaging groove 108 can be suppressed. Other effects are the same as those of the first embodiment.

[0218] Reference Fig.10 The third embodiment will be described. Fig.10 1 is a perspective view showing the engaging member 132 and the positional deviation suppressing member 133 of the engaging portion 131. The engaging portion 131 of the third embodiment is different from the first embodiment in that the engaging member 132 and the positional deviation suppressing member 133 are independent members.

[0219] The position deviation suppression member 133 and the engaging member 132 are made of the same material. The materials used to make the engaging member 132 and the position deviation suppression member 133 are made by the same method as the engaging member 110 described in the first embodiment (see Figure 8 ). Therefore, the material includes the epidermis connecting portion 116 and the bulging portion 117. The length of the material is set to be longer than the total value of the lengths in the long side direction of the engaging member 132 and the position deviation suppression member 133. The engaging member 132 and the position deviation suppression member 133 are manufactured by cutting the material in a plane orthogonal to the extending direction.

[0220] Since the material of the position deviation suppression member 133 is the same as that of the engaging member 132, the time and effort required to manufacture the position deviation suppression member 133 is small. Figure 8 ) except for the case related to the first embodiment. In addition, similarly to the second embodiment, the position deviation suppression member 133 can be installed not only at one end portion of the long side direction of the engaging member 132, but also at both ends. In addition, the position deviation suppression member 133 can be set not only at a position abutting against the clamp 109 set at the end portion in the extension direction, but also at a position abutting against the clamp 109 set at the middle portion in the extension direction. In the example shown in the figure, the position deviation suppression member 133 is set only on one side of the extension direction relative to one clamp 109, but can also be set on both sides thereof. One position deviation suppression member 133 arranged between two clamps 109 can abut against the corresponding clamp 109 at its two end surfaces 119 in the extension direction.

[0221] Reference Figure 11 to Figure 14 A fourth embodiment will be described. Fig.11 1 is a perspective view showing the engaging member 142 and the positional deviation suppressing member 143 of the engaging portion 141. Figure 7 14 is a development diagram showing the positional deviation suppression member 143. Fig.13 1 is a cross-sectional view showing the installation status of the engaging member 142 to the clamp 109. Fig.14It is a partial cross-sectional side view showing the attachment state of the engaging member 142 to the clamp 109. The fourth embodiment is different from the third embodiment in the engaging member 142 and the positional deviation suppression member 143.

[0222] like Fig.14 As shown, the engaging member 142 is relatively similar to the engaging member 132 (see Fig.10 ), which are common in having an epidermis connecting portion 116 and a bulging portion 117, but are different in the following aspects: a cutout portion 144 is provided in a bent portion 108a of the bottom surface of the engaging groove 108. The cutout portion 144 is provided from the bulging portion 117 side, cuts off the bulging portion 117, and cuts the epidermis connecting portion 116 into a concave shape. The engaging member 142 includes a plate 145 provided at a position closer to the seating surface side than the cutout portion 144. The plate 145 is fixed to a single surface of the epidermis connecting portion 116 by sewing. Both ends of the plate 145 in the extension direction are located at a position closer to the outer side of the extension direction than both ends of the cutout portion 144 in the extension direction. In the portion where the bottom surface of the engaging groove 108 is inclined relative to the horizontal plane, it is preferred that the ends of the plate 145 overlap with the ends of the position deviation suppression member 143 in the extension direction when viewed from the depth direction of the engaging groove 108. The bending rigidity of the plate 145 is preferably higher than the bending rigidity of the skin connecting portion 116 . For example, the plate 145 is made of a sewing-capable resin.

[0223] like Figure 11 to Figure 14 As shown, the position deviation suppression member 143 is a flexible sheet-like member having an opening 146 penetrating in the thickness direction. Preferably, when the position deviation suppression member 143 is unfolded, the opening 146 is rectangular, and the outer shape of the position deviation suppression member 143 is also rectangular with sides parallel to the sides of the opening 146. The position deviation suppression member 143 has a predetermined thickness, and an end surface 147 is formed on the inner periphery of the position deviation suppression member 143 defining the opening 146. The position deviation suppression member 143 preferably has a greater thickness than the skin connection portion 116, and is made of, for example, felt.

[0224] The position deviation suppressing member 143 overlaps the bulging portion 117 of the engaging member 132 and the skin connecting portion 116 from both sides in the width direction (in the front and back direction of the skin connecting portion 116) and is fixed to the skin connecting portion 116 by sewing, so that the portion of the bulging portion 117 of the engaging member 132 engaged with the engaging claw 115 is exposed through the opening 146 and the position deviation suppressing member 143 surrounds the portion adjacent to the portion of the bulging portion 117 exposed through the opening 146. Therefore, the end faces 147 of the position deviation suppressing member 143 facing each other in the extension direction face the side faces in the extension direction of the engaging piece 113 of the clamp 109, and the end faces 147 abut against the engaging piece 113 by a slight displacement of the engaging member 132 in the extension direction. In addition, one or both of the end faces 147 may abut against the engaging piece 113 in the original position.

[0225] The work of forming the cutout portion 144, the work of attaching the plate 145 to the engaging member 142, and the work of attaching the position deviation suppression member 143 to the engaging member 142 are performed after the position deviation suppression member 143 is attached to the surface material 106 in order to facilitate the position adjustment. In addition, these operations may be performed before the position deviation suppression member 143 is attached to the surface material 106 in order to improve the workability.

[0226] By providing the cutout portion 144 , it is easy to deform the engaging member 142 in accordance with the shape of the engaging groove 108 .

[0227] Since the plate 145 compensates for the decrease in bending rigidity of the engaging member 142 caused by the bulging portion 117 being cut off by the cutout portion 144 , it is possible to suppress the two bulging portions 117 facing each other across the cutout portion 144 from shifting toward each other.

[0228] Since the end surface 147 of the position deviation suppression member 143 defining the opening 146 can abut against the locking piece 113 of the clamp 109, the position deviation of the engaging member 142 in the extension direction can be suppressed. The position deviation suppression member 143 can be applied to the clamp 109 provided at the end in the extension direction or to the clamp 109 provided in the middle.

[0229] Reference Fig.15 A fifth embodiment will be described. Fig.15 151 is a partial cross-sectional side view of the locking portion 151. The fifth embodiment is different from the fourth embodiment in that the locking member 142 of the fourth embodiment has a cutout portion 144 (see Fig.14 ) has a slit 153 instead of the cutout portion 144.

[0230] The slit 153 is provided by cutting the engaging member 152 from the bulging portion 117 at a position corresponding to the bent portion 108a. The slit 153 cuts through the bulging portion 117 and reaches the vicinity of the portion of the skin connecting portion 116 that is attached to the plate 145. The fifth embodiment has the same effects as the fourth embodiment.

[0231] Reference Fig.16 A sixth embodiment will be described. Fig.16 161 is a partial cross-sectional side view of the locking portion 161. The sixth embodiment is different from the fourth embodiment in that the cutout portion 144 of the locking member 142 of the fourth embodiment is provided from the bottom surface side of the locking groove 108 (see FIG. Fig.14 ), the cutout portion 163 of the engaging member 162 is provided from the side edge portion of the skin connecting portion 116 connected to the skin material 106, and no plate 145 is provided (refer to Fig.14 ).

[0232] The cutout 163 cuts the epidermis connecting portion 116 from the side edge of the epidermis connecting portion 116 connected to the epidermis material 106 to the bulging portion 117 at a position corresponding to the bent portion 108a. By providing the cutout 163, it is easy to deform the engaging member 162 in accordance with the shape of the engaging groove 108. Unlike the fourth embodiment, since the bulging portion 117 having a higher bending rigidity than the epidermis connecting portion 116 exists at a position corresponding to the bent portion 108a, it is possible to suppress the portion of the bulging portion 117 that engages with two adjacent clamps 109 separated by the cutout 163 from shifting in a direction approaching each other.

[0233] The following is a supplementary note on the second embodiment.

[0234] (Note 1)

[0235] A seat for a vehicle, comprising:

[0236] The cushion as a buffer body has a snap-fitting groove recessed on the seating surface;

[0237] A surface material, stretched on the seating surface of the cushion;

[0238] A clamp, comprising a base plate, and a locking piece, wherein the base plate is embedded in a portion of the pad located at the bottom of the locking groove, and the locking piece is vertically arranged from the base plate and is formed with a locking claw located in the locking groove;

[0239] A clamping member, comprising a skin connecting portion and a bulging portion, wherein the skin connecting portion is in the shape of a strip extending in the extending direction of the clamping groove and is connected to the skin material at one side edge, and the bulging portion is provided at the other side edge of the skin connecting portion in a manner of bulging in the width direction of the clamping groove and is clamped to the clamping claw of the clamp; and

[0240] The positional deviation suppression member is fixed to the skin connection portion by sewing, and has an end surface that can abut against the locking piece and faces the extending direction.

[0241] (Note 2)

[0242] The vehicle seat according to Supplementary Note 1, wherein the positional deviation suppression member is formed by folding a longitudinal end of the engaging member onto a main body of the engaging member.

[0243] (Note 3)

[0244] The vehicle seat according to Supplementary Note 2, wherein the bulging portion is cut off between the main body and the positional deviation suppression member.

[0245] (Note 4)

[0246] The vehicle seat according to Supplementary Note 1, wherein the positional deviation suppression member is a member independent of the engaging member.

[0247] (Note 5)

[0248] The vehicle seat according to Supplementary Note 4, wherein the positional deviation suppression member and the engaging member are formed of the same material.

[0249] (Note 6)

[0250] The vehicle seat according to Supplementary note 4, wherein the positional deviation suppression member is configured to overlap the engaging member from both sides in the width direction so as to surround the bulging portion and has an opening defining the end surface.

[0251] (Note 7)

[0252] A method is a method for inserting the surface material of the vehicle seat according to Supplement 1, the method comprising:

[0253] The step of fixing the positional deviation suppression member to the skin connection portion by sewing; and

[0254] The step of causing the bulging portion to be locked to the locking claw.

[0255] (Note 8)

[0256] The method according to Supplementary Note 7 further includes: providing the positional deviation suppression member by folding the longitudinal end of the engaging member onto the main body of the engaging member,

[0257] The fixing step includes fixing the skin connection portion of the positional deviation suppression member to the skin connection portion of the main body by sewing.

[0258] (Note 9)

[0259] The method according to Supplementary Note 8, wherein the step of providing the position deviation suppression member includes: cutting the bulging portion between the main body and the position deviation suppression member.

[0260] (Note 10)

[0261] The method according to Supplementary Note 7, wherein the positional deviation suppression member is a member independent of the engaging member.

[0262] (Note 11)

[0263] The method according to Supplementary Note 10 further includes: a step of preparing a material including the epidermis connecting portion and the bulging portion; and

[0264] The step of cutting the material to form the engaging member and the position deviation suppression member,

[0265] The fixing step includes fixing the skin connecting portion of the positional deviation suppression member to the skin connecting portion of the engaging member by sewing.

[0266] (Note 12)

[0267] The method according to Supplementary Note 10, wherein the positional deviation suppression member has an opening defining the end surface and has flexibility,

[0268] The fixing step includes overlapping the position deviation suppression member on the engaging member from both sides in the width direction and fixing the position deviation suppression member to the skin connecting portion by sewing in such a manner that the portion of the bulging portion that is engaged with the engaging claw is exposed through the opening and the position deviation suppression member surrounds the bulging portion.

[0269] Explanation of symbols

[0270] S1, S2: Vehicle seats (transportation seats)

[0271] F: Seat frame (frame)

[0272] 1: Seat cushion

[0273] 2: Seat back

[0274] 2a: Center of backrest

[0275] 2b: Embankment

[0276] 3: Headrest

[0277] 4: Airbag device

[0278] 4a: Airbag

[0279] 4b: Inflator

[0280] 4c: Gas blowing part

[0281] 4d: Shell

[0282] 4e: Fixtures

[0283] 10: Padding

[0284] 10a: Card slot

[0285] 10b: Horizontal card slot

[0286] 10c: Containment

[0287] 10d: Slit

[0288] 20: Epidermis

[0289] 21: Central

[0290] 21a: End of the center part

[0291] 22: First side

[0292] 22a: First side inner end

[0293] 22b: first side outer end (outer end)

[0294] 23: Second side

[0295] 23a: Front end

[0296] 23b: rear end

[0297] 24: First joint

[0298] 25: Second joint

[0299] 25a: Fracture

[0300] 26: Back of the epidermis

[0301] 27: Wire fasteners

[0302] 30: Cloth

[0303] 31: Chest pad (guide member, first guide member)

[0304] 32: Outer end of chest pad (first end)

[0305] 32a: First upper end portion

[0306] 32b: First lower end

[0307] 33: Inner end of chest pad (second end)

[0308] 33a: Second upper end

[0309] 33b: Second lower end

[0310] 34: Waist pad (second guide member)

[0311] 35: Outer end of waist pad

[0312] 35a: Third upper end

[0313] 35b: Third lower end

[0314] 36: Inner end of waist pad

[0315] 37: Outer padding

[0316] 37a: Front end of outer cloth

[0317] 37b: Rear end of outer pad

[0318] 40: Fixture

[0319] 40a: Holding part

[0320] 41: First clamp (engaging member, first engaging member)

[0321] 41a: first clamp upper end (first upper end)

[0322] 42: Second clamp (engaging member, first engaging member)

[0323] 42b: Second clamp lower end (first lower end)

[0324] 43: Third clamp (second engaging member, upper engaging member)

[0325] 43a: Third clamp upper end (second upper end)

[0326] 44: Fourth clamp (second engaging member, intermediate engaging member)

[0327] 45: Fifth clamp (second engaging member, lower engaging member)

[0328] 45b: lower end portion of the fifth clamp (second lower end)

[0329] 50: Install components

[0330] 50a: Top

[0331] 50b: Base end

[0332] 102: Seat Cushion

[0333] 103: Seat back

[0334] 104: Headrest

[0335] 105: Padding

[0336] 106: Surface material

[0337] 107: Card embedding part

[0338] 108: Card slot

[0339] 108a: Flexure

[0340] 109: Fixture

[0341] 110: Embedded components

[0342] 110a: Main body

[0343] 111: Position deviation suppression member

[0344] 112: Substrate

[0345] 113: Stopper

[0346] 114: Vertical setting part

[0347] 115: Locking claw

[0348] 116: Epidermal junction

[0349] 117: Protrusion

[0350] 118: Incision

[0351] 119: End face

[0352] 120: Suture

[0353] 121: Card embedding part

[0354] 131: Card embedding part

[0355] 132: Embedded components

[0356] 133: Position deviation suppression member

[0357] 141: Card embedding part

[0358] 142: Embedded components

[0359] 143: Position deviation suppression member

[0360] 144: Incision

[0361] 145: Board

[0362] 146: Opening

[0363] 147: End face

[0364] 151: Card embedding part

[0365] 152: Embedded components

[0366] 153: Slit

[0367] 161: Card embedding part

[0368] 162: Embedded components

[0369] 163: Incision

Claims

1. A vehicle seat, characterized in that: include: frame; A pad, disposed on the frame; an epidermis covering said pad; an airbag device mounted on the frame and having an airbag and an inflator; a guide member disposed on the inner surface side of the skin and at a position corresponding to the airbag device and guiding the deployment of the airbag; as well as A snap-fit ​​member snaps the skin into the liner, The skin has: a central portion covering a central portion of the cushion in the seat width direction; a first side portion joined to an end portion of the central portion in the seat width direction; a second side portion joined to an outer end portion of the first side portion in the seat width direction; a first joining portion joining the central portion to the first side portion; and a second joining portion joining the first side portion and the second side portion, The first engaging portion is engaged with the engaging member and is engaged with the gasket. The second joint portion has a breaking portion formed therein to break when the airbag is deployed. The first end portion, which is an outer end portion of the guide member in the seat width direction, is joined to the first side portion at the break portion. The second end portion, which is an inner end portion of the guide member in the seat width direction, is engaged with the first side portion at the first engagement portion. A length of the engaging member from the first upper end to the first lower end in the vertical direction is longer than a length of the first end portion of the guide member from the first upper end portion to the first lower end portion in the vertical direction.

2. The vehicle seat according to claim 1, characterized in that: The first upper end portion of the guide member is arranged above the first upper end of the engagement member. A vertical length between the first upper end of the guide member and the first upper end of the engagement member is shorter than a vertical length from the first upper end to the first lower end of the engagement member.

3. The vehicle seat according to claim 1, characterized in that: The second upper end portion of the second end portion of the guide member is disposed above the first upper end of the engagement member. The second lower end portion of the second end portion of the guide member is disposed below the first lower end of the engagement member.

4. The vehicle seat according to any one of claims 1 to 3, characterized in that: The engaging member includes: a first engaging member; and a second engaging member disposed below the engaging member. The guide member comprises: a first guide member disposed at a position corresponding to the height of the chest of the occupant on the seat and engaged with the first engaging member; and a second guide member disposed at a position corresponding to the height of the chest of the occupant on the seat and engaged with the second engaging member. A vertical length from the second upper end to the second lower end of the second engagement member is longer than a vertical length from the third upper end to the third lower end of the outer side of the second guide member in the seat width direction.

5. The vehicle seat according to any one of claims 1 to 3, characterized in that: The engaging member includes: a first engaging member; and a second engaging member disposed below the engaging member. The guide member comprises: a first guide member disposed at a position corresponding to the height of the chest of the occupant on the seat and engaged with the first engaging member; and a second guide member disposed at a position corresponding to the height of the chest of the occupant on the seat and engaged with the second engaging member. The gas blowing portion of the inflator is arranged closer to the first guide member than the second guide member. A vertical length from a third upper end portion to a third lower end portion of the outer side of the second guide member in the seat width direction is longer than a vertical length from the first upper end portion to the first lower end portion.

6. The vehicle seat according to any one of claims 1 to 3, characterized in that: The engaging member includes: a first engaging member; and a second engaging member disposed below the engaging member. The guide member comprises: a first guide member disposed at a position corresponding to the height of the chest of the occupant on the seat and engaged with the first engaging member; and a second guide member disposed at a position corresponding to the height of the chest of the occupant on the seat and engaged with the second engaging member. The gas blowing portion of the inflator is arranged closer to the second guide member than the first guide member. A vertical length from a third upper end portion to a third lower end portion of the outer side of the second guide member in the seat width direction is longer than a vertical length from the first upper end portion to the first lower end portion.

7. The vehicle seat according to any one of claims 1 to 3, characterized in that: The engaging member includes: a first engaging member; and a second engaging member disposed below the engaging member. The second engaging member comprises: an upper engaging member; an intermediate engaging member disposed below the upper engaging member; and a lower engaging member disposed below the intermediate engaging member. The guide member comprises: a first guide member disposed at a position corresponding to the height of the chest of the occupant on the seat and engaged with the first engaging member; and a second guide member disposed at a position corresponding to the height of the chest of the occupant on the seat and engaged with the second engaging member. A vertical length from a third upper end portion to a third lower end portion of the outer side of the second guide member in the seat width direction is longer than a vertical length from the first upper end portion to the first lower end portion.

Images