Vehicle seat and method for manufacturing a vehicle seat

Abstract

To provide a vehicle seat in which no engagement member is exposed even after a skin is attached to a pad.SOLUTION: A vehicle seat S comprises a frame F, a pad 16 provided on the frame F, and a skin 17 covering the pad 16. The skin 17 has a frame engagement member 18 engaging with the frame F at an end part of the skin 17. Engaging parts 19 are formed on the frame engagement member 18, and engaged parts 15 corresponding to the engaging parts 19 are disposed on the frame F. The engaged part 15 is engaged from a front side 18a of the frame engagement member 18. In a state in which the engaging part 19 and the engaged part 15 engage with each other, the skin 17 is folded back at a portion connected with the frame engagement member 18, and the engaged part 15 is provided to be covered with the skin 17.SELECTED DRAWING: Figure 10B

Description

Technical Field

[0001] The present invention relates to a vehicle seat and a method for manufacturing a vehicle seat, and more particularly to a vehicle seat provided with a skin engaged with a frame and a method for manufacturing the vehicle seat.

Background Art

[0002] Conventionally, a vehicle seat installed in a vehicle such as an automobile includes a skin fixed to a frame by covering a pad arranged on the frame. A plurality of hook pieces are sewn to an end portion of the skin, and the skin is fixed by hanging the plurality of hook pieces on a frame or the like (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] However, after the hook pieces are hung on a frame or the like, the hook pieces or the hooked portions of the frame may be exposed and visible from the outside.

[0005] The present invention has been made in view of the above problems, and an object thereof is to provide a vehicle seat and a method for manufacturing a vehicle seat in which engagement members such as hook pieces are not exposed even after the skin is attached to the pad.

Means for Solving the Problems

[0006] According to the vehicle seat of the present invention, the above problem is solved by providing a frame, a pad disposed on the frame, and a skin covering the pad. The skin has a frame engaging member that engages with the frame at an end of the skin. An engaging portion is formed in the frame engaging member, and an engaged portion corresponding to the engaging portion is provided in the frame. The engaged portion is engaged from the surface side of the frame engaging member. With the engaging portion and the engaged portion engaged, the skin is folded back at a connection portion with the frame engaging member and is arranged to cover the engaged portion with the skin. , the frame engaging member is a plate-like member attached along the end of the skin, the engaging portion has an opening through which the engaged portion is inserted, and the opening is formed in a trapezoidal shape This solves the problem.

[0007] Further, according to the method for manufacturing a vehicle seat of the present invention, the above problem is solved by including steps of preparing a frame, a pad, and a skin covering the pad; disposing the pad on the frame and covering the pad with the skin; engaging an engaged portion corresponding to the engaging portion provided on the frame with an engaging portion of a frame engaging member that engages with the frame and is provided at an end of the skin, from the surface side of the skin; and folding back an end of the skin at a connection portion with the frame engaging member and covering the engaged portion with the skin. . The frame engaging member is a plate-like member attached along the end of the skin. The engaging portion has an opening through which the engaged portion is inserted, and the opening is formed in a trapezoidal shape This solves the problem.

[0008] According to the vehicle seat and the method for manufacturing a vehicle seat of the present invention configured as described above, in a state where the engaging portion of the frame engaging member and the engaged portion of the frame are engaged, the engaged portion is covered with the skin, so that the engaged portion (for example, a hook or the like) is not exposed. Therefore, the engaged portion is not visually recognized from the outside, and the design property of the vehicle seat is improved. . Further, since the frame engaging member is a plate member, an opening having higher strength can be formed as compared with the case where an opening is formed in the skin . Further, by forming the opening in a trapezoidal shape, it becomes difficult for the engaged portion to come off from the opening

[0009] In the above vehicle seat, the engaged portion may preferably be an L-shaped hook integrally formed with the frame. By making the engaged portion an L-shaped hook, it becomes easier for each engaging portion of the frame engaging member to engage with the engaged portion. Therefore, the skin can be more easily attached to the frame.

[0011] In the vehicle seat described above, it is preferable that the length of the engaging edge that engages with the engaged portion at the opening is formed to be larger than the length of the portion where the engaged portion engages with the engaging portion. By making the length of the engaging edge at the opening larger than the length of the engaging portion of the engaged portion, that is, by forming a play portion at the opening, the skin covering the pad can be displaced. Even when the occupant shifts their body while sitting on the seat, the skin can easily follow the shift of the body, and damage to the skin and the like is suppressed.

[0013] . According to the vehicle seat of the present invention, the above problem is solved by providing a frame, a pad arranged on the frame, and a skin covering the pad. The skin has a frame engaging member that engages with the frame at the end of the skin. An engaging portion is formed in the frame engaging member, and an engaged portion corresponding to the engaging portion is provided in the frame. The engaged portion is engaged from the surface side of the frame engaging member. In a state where the engaging portion and the engaged portion are engaged, the skin is folded back at the connection portion with the frame engaging member and is arranged to cover the engaged portion with the skin. The frame engaging member is a plate-like member attached along the end of the skin, and the engaging portion has an opening through which the engaged portion is inserted The opening is formed by an H-shaped or U-shaped slit. . This solves the problem 。 By forming the opening by an H-shaped or U-shaped slit, it is possible to suppress dust or dirt from entering through the opening.

[0014] . According to the vehicle seat of the present invention, the above problem is solved by providing a frame, a pad arranged on the frame, and a skin covering the pad. The skin has a frame engaging member that engages with the frame at the end of the skin. An engaging portion is formed in the frame engaging member, and an engaged portion corresponding to the engaging portion is provided in the frame. The engaged portion is engaged from the surface side of the frame engaging member. In a state where the engaging portion and the engaged portion are engaged, the skin is folded back at the connection portion with the frame engaging member and is arranged to cover the engaged portion with the skin. The frame engaging member is a plate-like member attached along the end of the skin, and the engaging portion has an opening through which the engaged portion is inserted The opening is formed by a notch formed in the frame engaging member and an end portion of the skin that closes the opening of the notch. . This solves the problem 。 By forming the opening by cutting out a plate member and forming the opening of the notch at the end portion of the skin, the opening can be easily formed.

[0015] According to the vehicle seat of the present invention, the above problem is solved by providing a frame, a pad disposed on the frame, and a skin covering the pad. The skin has a frame engaging member that engages with the frame at an end of the skin. An engaging portion is formed in the frame engaging member, and a engaged portion corresponding to the engaging portion is provided in the frame. The engaged portion is engaged from the surface side of the frame engaging member. In a state where the engaging portion and the engaged portion are engaged, the skin is folded back at a connection portion with the frame engaging member and is arranged to cover the engaged portion with the skin. The frame engaging member is a plate-like plate member attached along an end of the skin, and the engaging portion has an opening through which the engaged portion is inserted. A constriction portion that protrudes toward the inside of the opening is provided on a side portion of the opening. is solved thereby 。 By providing a constriction portion that protrudes inward on the side portion of the opening, the engaged portion inserted into the opening is less likely to come out.

[0016] According to the vehicle seat of the present invention, the above problem is solved by providing a frame, a pad disposed on the frame, and a skin covering the pad. The skin has a frame engaging member that engages with the frame at an end of the skin. An engaging portion is formed in the frame engaging member, and a engaged portion corresponding to the engaging portion is provided in the frame. The engaged portion is engaged from the surface side of the frame engaging member. In a state where the engaging portion and the engaged portion are engaged, the skin is folded back at a connection portion with the frame engaging member and is arranged to cover the engaged portion with the skin. The frame engaging member is a plate-like plate member attached along an end of the skin, and the engaging portion has an opening through which the engaged portion is inserted. The opening is an elongated hole that extends along an end portion of the skin. is solved thereby 。 Since the opening is an elongated hole, the engaged portion inserted into the opening is less likely to come out.

Advantages of the Invention

[0017] According to the vehicle seat and the method for manufacturing the vehicle seat of the present invention, since the engaged portion of the frame is covered with the skin in a state where the engaging portion of the frame engaging member and the engaged portion of the frame are engaged, the engaged portion (for example, a hook or the like) is not exposed. Therefore, the engaged portion is not visually recognized from the outside, and the design property of the vehicle seat is improved. Further, by forming the engaged portion as an L-shaped hook, it becomes easier for each engaging portion of the frame engaging member to engage with the engaged portion. Therefore, the skin can be attached to the frame more simply. Further, since the frame engaging member is a plate member, an opening having higher strength can be formed as compared with the case where an opening is formed in the skin. Further, by making the length of the engaging side in the opening larger than the length of the portion where the engaged portion engages, that is, by forming a play portion in the opening, the skin covering the pad becomes displaceable. Even when the occupant shifts their body while sitting on the seat, the skin easily follows the shift of the body, and damage to the skin is suppressed. Further, by forming the opening in a trapezoidal shape, it becomes difficult for the engaged portion to come off from the opening. Further, by forming the opening as an H-shaped or U-shaped slit, it is possible to suppress dust or dirt from entering through the opening. Further, the opening can be easily formed by forming the opening by cutting out the plate member and forming the opening of the cutout at the end of the skin. Further, by providing a constriction portion protruding inward on the side portion of the opening, the engaged portion inserted into the opening is less likely to come out. Further, since the opening is an elongated hole, the engaged portion inserted into the opening is less likely to come out.

Brief Description of the Drawings

[0018]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7A

Figure 7B

Figure 8A

Figure 8B

Figure 9A

Figure 9B

Figure 9C

Figure 9D

Figure 9E

Figure 9F

Figure 10A

Figure 10B

Figure 11

Figure 12

Embodiments for Carrying Out the Invention

[0019] Hereinafter, the configuration of the vehicle seat according to an embodiment of the present invention (this embodiment) will be described with reference to the drawings. However, the embodiment described below is an example for facilitating the understanding of the present invention and does not limit the present invention. That is, the present invention can be changed and improved without departing from its gist, and it goes without saying that the equivalents of the present invention are included therein.

[0020] Note that hereinafter, as an example of the vehicle seat, a vehicle seat will be cited and its configuration example will be described. However, the present invention is not limited to the vehicle seat mounted on a ground vehicle having wheels such as an automobile or a railway, and may be a seat mounted on an aircraft, a ship, or the like that moves other than on the ground.

[0021] In the following description, the "front-rear direction" is the front-rear direction of the vehicle seat and coincides with the traveling direction when the vehicle is running. Also, the "seat width direction" is the width direction of the vehicle seat and coincides with the left-right direction as seen from the occupant sitting on the vehicle seat. Also, the "vertical direction" is the vertical direction of the vehicle seat and coincides with the vertical direction when the vehicle is traveling on a horizontal plane. In the following description, when various directions are described with "seat" attached, such as the "seat width direction" and the "seat height direction", it indicates the direction with respect to the vehicle seat, and when "vehicle" is attached, such as "inside the vehicle" and "outside the vehicle", it indicates the direction with respect to the vehicle. Also, regarding the shape, position, posture, etc. of each part of the vehicle seat described below, unless otherwise specified, it will be described assuming the case where the vehicle seat is in the sitting state described later.

[0022] <Basic Configuration of Vehicle Seat> The basic configuration of the vehicle seat (hereinafter, vehicle seat S) according to this embodiment will be described with reference to FIGS. 1 and 2. FIG. 1 is a perspective view of the vehicle seat S. In FIG. 1, for the convenience of illustration, a part of the vehicle seat S is shown with the trim covers 17 and 27, which are the skin, removed.

[0023] The vehicle seat S is a seat placed on the vehicle body floor for the vehicle occupants to sit on. In the present embodiment, the vehicle seat S is used as a front seat corresponding to the front seat of the vehicle. However, it is not limited thereto, and the vehicle seat S may be a rear seat of the vehicle, or may also be used as a middle seat in the second row or a rear seat in the third row in a vehicle equipped with three rows of seats in the front-rear direction.

[0024] As shown in FIG. 1, the vehicle seat S mainly includes a seat cushion S1 serving as a seating portion for supporting the buttocks of the seated person, a seat back S2 serving as a backrest portion for supporting the back of the seated person, and a headrest S3 arranged at the upper part of the seat back S2 for supporting the head of the seated person. The seat cushion S1 and the seat back S2 are connected with the reclining mechanism 60 (see FIG. 2) interposed therebetween. Although not shown, a slide rail is installed at the lower part of the seat cushion S1, and by this slide rail, the vehicle seat S is placed on the vehicle body floor in a state where it can slide in the front-rear direction.

[0025] A frame F shown in FIG. 2 is provided in the vehicle seat S, and the frame F is mainly composed of a cushion frame 1 and a back frame 2. The cushion frame 1 forms the skeleton of the seat cushion S1 in the frame F, and the back frame 2 forms the skeleton of the seat back S2 in the frame F.

[0026] The rear end portion of the seat cushion S1 is connected to the lower end portion of the seat back S2. Further, the seat cushion S1 is configured by arranging a cushion pad 16 on the cushion frame 1 and further covering the cushion pad 16 with a trim cover 17 for the cushion. The seat back S2 is configured by arranging a back pad 26 on the back frame 2 and further covering the back pad 26 with a trim cover 27 for the back.

[0027] The cushion pad 16 and the back pad 26 are urethane base materials formed by foam molding using, for example, a urethane foaming agent. The cushion pad 16 and the back pad 26 correspond to the pads of the present invention. Also, the trim cover 17 for the cushion and the trim cover 27 for the back correspond to the skin of the present invention and are composed of cloth, film, cloth, leather, sheet, etc. Further, the trim covers 17 and 27 are attached so as to cover the cushion pad 16 and the back pad 26 in a state of being stretched so that a predetermined tension is applied. When covering the cushion pad 16 with the trim cover 17 for the cushion in the present embodiment, the end portion of the trim cover 17 is attached to a predetermined location, and the attachment method will be described later.

[0028] As shown in FIG. 2, the cushion frame 1 of the frame F has a substantially rectangular frame-shaped outer shape. And the cushion frame 1 has a pair of cushion side frames 12 that respectively constitute the left and right ends in the sheet width direction, a pan frame 11 that constitutes the front end portion of the cushion frame 1, and a spring 14 (S spring) as a main component.

[0029] The two cushion side frames 12 are arranged so as to be separated in the left-right direction and extend in the front-rear direction of the vehicle in order to define the width of the cushion frame 1. And a front pipe 13a that connects the two cushion side frames 12 is attached to the front end portion, and a rear pipe 13b is attached to the rear end portion.

[0030] The pan frame 11 is fixedly joined to the front side of the pair of cushion side frames 12, and the left and right cushion side frames 12 are connected on the front side by the pan frame 11. More specifically, the left and right end portions of the pan frame 11 are respectively fixed to flanges provided on the cushion side frames 12 by fixing means such as welding. The pan frame 11 is mainly for supporting the thighs of the seated person (occupant), and is a frame formed from a metal plate material having an upper surface formed in a substantially rectangular shape that is substantially flat.

[0031] A plurality of springs 14 (S springs) as pressure receiving parts are arranged side by side in the sheet width direction between the left and right cushion side frames 12. The spring 14 extends long in the sheet front-rear direction. The front end portion of the spring 14 is fixed to the front pipe 13a, and the rear end portion of the spring 14 is fastened to the rear pipe 13b. Further, a pressure receiving plate 14a is provided on the spring 14.

[0032] <Engaged portion> A plurality of hooks 15a (engaged portions) for attaching the end portion of the trim cover 17 are formed on the lower surface of the pan frame 11. The hook 15a is formed with an L-shaped cross section and is provided by raising a part of the pan frame 11.

[0033] A plurality of hooks 15b (engaged portions) for attaching the end portion of the trim cover 17 are also formed on each of the left and right cushion side frames 12. The cross section of the hook 15b is formed in an inverted L shape as shown in FIG. 2, and is provided by raising a part of the cushion side frame 12.

[0034] A plurality of hooks 15c (engaged portions) for attaching the end portion of the trim cover 17 are also formed on the lower surface of the pressure receiving plate 14a, similar to the cushion side frame 12 and the pan frame 11. The hook 15c is formed with an L-shaped cross section and is provided by raising a part of the pressure receiving plate 14a. In the following description, when there is no need to particularly distinguish between the hooks 15a to 15c provided on the cushion side frame 12, the pan frame 11, and the pressure receiving plate 14a, they may be simply referred to as hooks 15.

[0035] <Back frame> The back frame 2 is mainly composed of a pipe processed into a rectangular frame shape. As shown in FIG. 2, the back frame 2 includes an inverted U-shaped upper frame 21, a pair of back side frames 22 forming the left and right ends in the sheet width direction, and a lower frame 23 connecting the lower end portions of the pair of back side frames 22. Further, the back frame 2 is provided with a pressure-receiving plate 24 suspended from the back frame 2, and a suspension frame 25 for suspending the pressure-receiving plate 24 is provided so as to span the left and right back side frames 22. A cylindrical headrest guide 21a is attached to the central upper end portion of the back frame 2. The headrest S3 is attached to the seat back S2 by inserting a headrest pillar 61 extending from the lower end of the headrest S3 into the headrest guide 21a.

[0036] As the constituent materials of the respective members constituting the cushion frame 1 and the back frame 2, materials having sufficient rigidity so as not to deform significantly when receiving a load, for example, metal materials such as steel materials and aluminum alloys can be mentioned. The joining means between the respective members constituting the cushion frame 1 and the back frame 2 is welding, but as the joining means, bolting and bonding with an adhesive may be used in combination.

[0037] <Cushion trim cover> Next, the configuration of the trim cover 17 for the cushion will be described with reference to FIGS. 3 to 6. The trim cover 17 is a member that covers the cushion pad 16 of the seat cushion S1, and has a cover body 17a and an extension portion 17b. The cover body 17a covers the upper surface, front surface, and both side surfaces of the cushion pad 16. The extension portion 17b is a portion extending from the rear end portion of the cover body 17a as shown in FIG. 4, and covers the surface of a protruding portion 16a protruding rearward from the cushion pad 16 as shown in FIG. 6. Note that the protruding portion 16a of the cushion pad 16 is a portion inserted into a gap V between the seat back S2 and the rear pipe 13b of the cushion frame 1.

[0038] <Frame engaging member> At the end of the trim cover 17, a frame engaging member 18 that engages with a hook 15 (engaged portion) provided on the cushion frame 1 is provided. Further, a plurality of engaging portions 19 are formed on the frame engaging member 18. On the cushion frame 1, a plurality of hooks 15, which are the engaged portions of the present invention, are provided corresponding to the positions where the engaging portions 19 are arranged. A plurality of engaging portions 19 may be formed on the frame engaging member 18 so as to correspond to the positions provided on the cushion frame 1.

[0039] As shown in FIGS. 3 and 4, the frame engaging member 18 is a plate-like plate member attached along the end of the cover body 17a of the trim cover 17. The frame engaging member 18 is attached by sewing at the end of the cover body 17a. The frame engaging member 18 is also attached by sewing to the tip of the extension portion 17b of the trim cover 17.

[0040] The plate-like frame engaging member 18 is formed of a hard synthetic resin, for example, polypropylene resin or vinyl chloride resin. The frame engaging member 18 may be made of a metal such as iron or aluminum. Further, the thickness of the frame engaging member 18 is preferably 1 to 8 mm, and more preferably 1.5 to 5 mm. The frame engaging member 18 and the frame engaging member 18 are attached by sewing, but may be joined with an adhesive. Further, the tip portion of the frame engaging member 18 that engages with the hook 15 may be formed thicker than other portions. By making the tip portion thicker, the strength is increased and breakage is suppressed.

[0041] In the present embodiment, as shown in FIGS. 4 and 7A, each engaging portion 19 of the frame engaging member 18 is provided with a penetrating opening 30. The width direction size L2 of the lower side 30b of the opening 30 that engages with the hook 15 is formed to be approximately the same size as the width L1 of the hook 15. When assembling, for example, after arranging the cushion pad 16 on the cushion frame 1, covering it with the trim cover 17, the frame engaging member 18 in front of the cushion is hooked on the hook 15a of the pan frame 11. Next, the frame engaging member 18 is hooked on the hook 15b of the cushion side frame 12 as shown in FIG. 5.

[0042] Regarding the extension portion 17b of the trim cover 17, as shown in FIG. 6, it is inserted into the gap V together with the protruding portion 16a of the cushion pad 16, and then the extension portion 17b is folded back, and the frame engaging member 18 provided at the end of the extension portion 17b is attached to the hook 15c of the pressure receiving plate 14a of the frame F.

[0042] In this way, the trim cover 17 is attached to the cushion frame 1. Conventionally, it was attached one by one to the plurality of hooks 15 using J-hooks or the like, but since the frame engaging member 18 having the plurality of engaging portions 19 can be hooked to the plurality of hooks 15 at once, it is possible to easily attach the trim cover 17 to the frame F.

[0043] <Shape of the engaging portion> The shape of the opening 30 formed in the engaging portion 19 will be described with reference to FIGS. 7A to 9F. As shown in FIG. 7A, an opening 30 is formed as a horizontally long through-hole in each engaging portion 19 of the frame engaging member 18. Explaining based on the direction shown in the figure, the lengths of the upper side 30a and the lower side 30b (engaging sides) of the opening 30 are substantially the same as the length L2 in the width direction of the hook 15. Both side portions of the engaging portion 19 are formed so as to draw a curve. Therefore, the central portion bulges slightly in the vertical direction, and the hook 15 can be easily inserted. Depending on the location where the hook 15 is arranged (for example, the hook 15a of the pan frame 11), the upper side 30a is the front side and the lower side 30b is the rear side.

[0044] <Another example of the engaging portion> Figures 8A and 8B show an alternative example of the opening 30, namely the opening 30A. The opening 30A shown in Figure 8A is also a horizontally elongated through-hole formed in each engaging portion 19 of the frame engaging member 18. Based on the direction of the description in the figure, in the opening 30A, the length L2 of the upper side 30Aa is substantially the same as the length L1 in the width direction of the hook 15. On the other hand, the length L3 of the lower engaging side (lower side 30Ab) where the hook 15 directly engages is formed to be larger than the length L1 of the portion where the hook 15 engages. In other words, the opening 30A is formed in a trapezoidal shape that partially protrudes in the direction along the end of the trim cover 17 (direction of arrow A). Since the lower side 30Ab of the opening is larger than the length L1 in the width direction of the hook 15, a so-called play portion is formed. The play portion is formed on either one of the portions where the hook 15 engages as shown in Figure 8A. The play portion may be provided on both sides. The presence of the play portion has the following effects.

[0045] When an occupant sits on the seat cushion S1, as shown in Figure 7B, the trim cover 17 may be pulled upward following the occupant's buttocks. As shown in Figure 7A, when the opening 30 into which the hook 15 is inserted is formed without a play portion, even when pulled, the displacement amount C1 of the frame engaging member 18 is small, and the trim cover 17 does not shift significantly. Therefore, if a stronger force is applied to the trim cover 17, there is a possibility that the connection portion 31 between the trim cover 17 and the frame engaging member 18 may be damaged.

[0046] When there is a play portion as in the opening 30A shown in Figure 8A, when the trim cover 17 is pulled upward as shown in Figure 8B, the trim cover 17 and the frame engaging member 18 shift more significantly compared to the case shown in Figure 7B. Since the displacement amount C2 is large, the force applied to the connection portion 31 between the trim cover 17 and the frame engaging member 18 is weakened, and damage can be suppressed. The size of the length L3 of the engaging side including the play portion is set according to the desired size of the displacement amount C2, but it is preferably about 1.2 to 2.0 times the length L1 in the width direction of the hook 15, and more preferably about 1.5 times.

[0047] <Modification example of the opening> A modification example of the opening 30 formed in the engaging portion 19 will be described with reference to FIGS. 9A to 9F. The opening 30C shown in FIG. 9A is formed by an H-shaped slit 32. A tongue piece 33 formed by the slit 32 is bent when the hook 15 is inserted, and the hook 15 can be inserted into and engaged with the opening 30C.

[0048] Also, the opening 30D shown in FIG. 9B is formed by a U-shaped slit 32A. FIG. 9C shows a cross-section taken along the line A-A of FIG. 9B. When the hook 15 is inserted into the opening 30D, the tongue piece 33A is bent as shown in FIG. 9C, and the hook 15 engages with the opening 33D. By forming a through-hole by a slit like the openings 30C and 30D, it becomes difficult for the hook 15 to come off, and the intrusion of dust, dirt, etc. from the openings 30C and 30D is suppressed.

[0049] The opening 30E formed in FIG. 9D is formed by a notch 34 formed in the frame engaging member 18 and an end portion of the trim cover 17. The opening of the notch 34 is blocked by an end portion of the trim cover 17. Thus, for the opening 30E, it is sufficient that a portion into which the hook 15 can be inserted is formed, and the engaging portion can be formed more simply. Also, as shown in FIG. 9E, the opening 30F may be formed by an elongated hole 35 extending along an end portion of the trim cover 17. The hook 15 inserted into the elongated hole 35 is difficult to come out because its vertical movement is suppressed.

[0050] Also, as shown in FIG. 9F, constriction portions 36 protruding inward of the opening 30G may be provided on both sides of the opening 30G. The constriction portions 36 are formed closer to the lower side 30Gb where the hook 15 is applied, slightly below the vertical center of the opening 30G, in other words. In the opening 30G, a wide portion (wide portion 37) and a narrow portion (narrow portion 38) are formed. By inserting the hook 15 into the wide portion 37 and passing the hook 15 through the constriction portion 36 into the narrow portion 38, an opening 30G that is difficult for the hook 15 to come off can be realized.

[0051] <Method of attaching the frame engagement member> Using FIGS. 10A and 10B, a method of attaching the frame engagement member 18 to the hook 15 will be described. FIG. 10A is a diagram showing a method of inserting and attaching the hook 15 into the opening 30 from the back side 17d of the trim cover 17 (more specifically, the back side 18b of the frame engagement member 18). As shown in FIG. 10A, when the hook 15 is inserted from the back side 17d, the hook 15 is exposed. Although the attachment of the frame engagement member 18 is easy, there is a problem that the hook 15 can be seen from the outside.

[0052] Therefore, in the attachment method shown in FIG. 10B, the hook 15 is covered by the trim cover 17 and attached so that the hook 15 is not exposed on the outside. In the opening 30, the hook 15 is inserted from the front side 17c of the trim cover 17 (more specifically, the front side 18a of the frame engagement member 18), and in a state where the hook 15 (engaged portion) is engaged with the engagement portion 19, the trim cover 17 is folded back to the opposite side at the connection portion 31 with the frame engagement member 18. By folding back the trim cover 17, the trim cover 17 covers the hook 15 as shown in FIG. 10B.

[0053] Using FIG. 11, a manufacturing method of the vehicle seat S including the attachment method of the frame engagement member 18 shown in FIG. 10B will be described. The frame F shown in FIG. 2 is prepared in advance, the back pad 26 is arranged on the frame F, and it is assumed that the back trim cover 27 that covers the back pad 26 is attached. Then, the cushion pad 16 and the trim cover 17 that constitute the seat cushion S1 are prepared (step S101).

[0054] Arrange the cushion pad 16 on the frame F and cover the cushion pad 16 with the trim cover 17 (step S102). Then, insert the hook 15 provided on the frame F into the engaging portion 19 (more specifically, the opening 30) of the frame engaging member 18 provided at the end of the trim cover 17 from the surface side 18a (skin side) of the frame engaging member 18 to engage the engaging portion 19 and the hook 15 (step S103). After engaging the hook 15 with the engaging portion 19, fold back the end of the trim cover 17 at the connection portion 31 with the frame engaging member 18 and arrange the trim cover 17 so as to cover the hook 15 (step S104). By hanging the frame engaging member 18 on the hook 15, a predetermined tension is applied, and the trim cover 17 is attached to the cushion pad 16. Also, by attaching the frame engaging member 18 to the hook 15 in this way, the hook 15 is not exposed and not visible from the outside, improving the design of the vehicle seat S.

[0055] <Another example of the frame engaging member> At the end of the trim cover 17 for the cushion shown in FIG. 4, a plate-like plate member is attached as the frame engaging member 18. The frame engaging member 18 is not limited to a plate shape, and may be realized by a linear wire member 39 as shown in the frame engaging member 18A in FIG. 11. The wire member 39 is attached along the end of the trim cover 17.

[0056] The wire member 39 is passed through and stored in a bag formed by folding back and sewing the end of the trim cover 17. Then, a part of the trim cover 17 is cut out to expose a part of the wire member 39 as the engaging portion 19A. The exposed wire member 39 (engaging portion 19A) is hooked on the hook 15. By applying a predetermined tension, the trim cover 17 for the cushion is fixed to the cushion pad 16.

[0057] The wire member 39 is preferably made of a metal or resin wire in the form of a rod, wire, tube, etc. Further, the diameter of the wire member 39 is preferably 1 to 8 mm, more preferably 1.5 to 5 mm.

[0058] As described above, the vehicle seat and its manufacturing method according to this embodiment have been described with reference to the drawings. In the above examples, the trim cover 17 used for the seat cushion S1 has been described as an example, but this is just an example, and the present invention may also be applied to the seat back S2. That is, a frame engaging member may be provided and attached to the trim cover 27 for the back pad that covers the back pad 26 of the seat back S2. Since a plurality of engaging portions corresponding to the hooks provided on the back frame 2 can be collectively attached, the workability when assembling the back pad 26 is improved.

Explanation of Reference Numerals

[0059] S Vehicle seat (automobile seat) S1 Seat cushion S2 Seat back S3 Headrest F Frame 1 Cushion frame (frame) 2 Back frame (frame) 11 Pan frame 12 Cushion side frame 13a Front pipe 13b Rear pipe 14 Spring 14a Pressure receiving plate 15, 15a, 15b, 15c Hooks (engaged portions) 16 Cushion pad (pad) 16a Protrusion 17 Trim cover (skin) 17a Cover body 17b Extension 17c Front side 17d Back side 18, 18A Frame engaging member 18a Front side Inner side of 18b Engagement parts 19, 19A Upper frame 21 Headrest guide 21a Backside frame 22 Lower frame 23 Pressure receiving plate 24 Back pad 26 Trim cover 27 Openings 30, 30A - 30G Connection part 31 Slit 32 Tongue piece 33 Notch 34 Elongated hole 35 Throttling part 36 Wide part 37 Narrow part 38 Wire member 39 Reclining mechanism 60 Headrest pillar 61

Claims

1. A vehicle seat comprising a frame, a pad disposed on the frame, and a skin covering the pad, wherein the skin has a frame engaging member that engages with the frame at an end of the skin, an engaging portion is formed in the frame engaging member, a engaged portion corresponding to the engaging portion is provided in the frame, the engaged portion is engaged from the surface side of the frame engaging member, with the engaging portion and the engaged portion engaged, the skin is folded back at a connection portion with the frame engaging member and is arranged to cover the engaged portion with the skin, the frame engaging member is a plate-like member attached along an end of the skin, the engaging portion has an opening through which the engaged portion is inserted, the opening is formed in a trapezoidal shape, characterized in that it is a vehicle seat.

2. The vehicle seat according to claim 1, wherein the engaged portion comprises an L-shaped hook integrally formed with the frame.

3. The vehicle seat according to claim 1 or 2, characterized in that a length of an engaging side that engages with the engaged portion in the opening is formed to be larger than a length of a portion where the engaged portion engages with the engaging portion.

4. A vehicle seat comprising a frame, a pad disposed on the frame, and a skin covering the pad, wherein the skin has a frame engaging member that engages with the frame at an end of the skin, an engaging portion is formed in the frame engaging member, a engaged portion corresponding to the engaging portion is provided in the frame, the engaged portion is engaged from the surface side of the frame engaging member, In a state where the engaging portion and the engaged portion are engaged, the skin is folded back at the connection portion with the frame engaging member and is arranged to cover the engaged portion with the skin. The frame engaging member is a plate-like member attached along the end of the skin. The engaging portion has an opening through which the engaged portion is inserted. The opening is formed by an H-shaped or U-shaped slit, and the seat is for a vehicle. **Claim 5**: A seat for a vehicle, comprising a frame, a pad arranged on the frame, and a skin covering the pad. The skin has a frame engaging member that engages with the frame at the end of the skin. An engaging portion is formed in the frame engaging member. An engaged portion corresponding to the engaging portion is provided on the frame. The engaged portion is engaged from the surface side of the frame engaging member. In a state where the engaging portion and the engaged portion are engaged, the skin is folded back at the connection portion with the frame engaging member and is arranged to cover the engaged portion with the skin. The frame engaging member is a plate-like member attached along the end of the skin. The engaging portion has an opening through which the engaged portion is inserted. The opening is formed by a notch formed in the frame engaging member and an end of the skin that closes the opening of the notch, and the seat is for a vehicle. **Claim 6**: A seat for a vehicle, comprising a frame, a pad arranged on the frame, and a skin covering the pad. The skin has a frame engaging member that engages with the frame at the end of the skin. An engaging portion is formed in the frame engaging member. An engaged portion corresponding to the engaging portion is provided on the frame. The engaged portion is engaged from the surface side of the frame engaging member. In a state where the engaging portion and the engaged portion are engaged, the skin is folded back at a connection portion with the frame engaging member, and is arranged to cover the engaged portion with the skin. The frame engaging member is a plate-like member attached along an end portion of the skin. The engaging portion has an opening through which the engaged portion is inserted. A constriction portion protruding toward the inside of the opening is provided on a side portion of the opening. A vehicle seat characterized by this.

7. A vehicle seat comprising a frame, a pad arranged on the frame, and a skin covering the pad. The skin has a frame engaging member that engages with the frame at an end portion of the skin. An engaging portion is formed in the frame engaging member. An engaged portion corresponding to the engaging portion is provided on the frame. The engaged portion is engaged from the surface side of the frame engaging member. In a state where the engaging portion and the engaged portion are engaged, the skin is folded back at a connection portion with the frame engaging member, and is arranged to cover the engaged portion with the skin. The frame engaging member is a plate-like member attached along an end portion of the skin. The engaging portion has an opening through which the engaged portion is inserted. The opening is an elongated hole extending along an end portion of the skin. A vehicle seat characterized by this.

8. Steps of preparing a frame, a pad, and a skin covering the pad. A step of arranging the pad on the frame and covering the pad with the skin. A step of engaging, from the surface side of the skin, an engaged portion corresponding to the engaging portion provided on the frame with an engaging portion of a frame engaging member that engages with the frame and is provided at an end portion of the skin. Folding back the end portion of the skin at the connection portion with the frame engaging member and covering the engaged portion with the skin. The frame engaging member is a plate-like member attached along the end portion of the skin. The engaging portion has an opening through which the engaged portion is inserted. The opening is formed in a trapezoidal shape, and a method for manufacturing a vehicle seat is characterized thereby.

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