Vehicle seat

Abstract

To provide a seat for a vehicle which attaches a cushion material for a shell with good workability and at the same time enhances attachment strength of the cushion material for the shell in the seat for the vehicle on which the cushion material is attached so as to cover surface of the shell.SOLUTION: A seat for a vehicle comprises a shell 10 which includes concave surface shape corresponding to a body of a seated person P and supports the seated person P from back side and a side cushion body 23 which is attached to side of the seated person P of the shell 10 and is split into left and right. An engagement body 16 is attached to a standing wall surface part 13 opposed to a lateral surface part of the seated person P in the shell 10. A plate-like body 24 is attached to a left cover part 23b1 of the side cushion body 23. The seat for the vehicle is attached to the shell 10 by sliding and moving the side cushion body 23 so as to insert a connection part 16b of the engagement body 16 into a slit 24a of the plate-like body 24.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a vehicle seat.

Background Art

[0002] Conventionally, a vehicle seat including a shell attached to a seat frame and a cushion material attached so as to cover the seating surface side of the shell is known. The vehicle seat described in Patent Document 1 is a vehicle seat of such a type. A magnet is attached to the surface of the shell and a concave portion is formed, and a magnetic body is attached to the back surface of the cushion material and a convex portion is formed. When the cushion material is positioned with respect to the shell, the magnet and the magnetic body are joined, and the concave portion and the convex portion are engaged so that the cushion material is attached to the shell.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the technique described in Patent Document 1, at the joining interface between the shell and the cushion material, when a shearing force parallel to the interface is applied to the cushion material, the joining strength is high, but when a peeling force perpendicular to the interface is applied to the cushion material, there is a problem that the joining strength is low. Specifically, in the shell, at the portion corresponding to the side portion of the seated person's body, when the seated person gets on and off, a peeling force that tends to peel the cushion material from the shell is likely to be applied, and in such a case, there is a problem that the cushion material may be peeled off from the shell.

[0005] In view of such problems, an object of the present invention is to provide a vehicle seat in which a cushioning material is attached so as to cover the surface of a shell, and the cushioning material can be attached to the shell with good workability and the attachment strength of the cushioning material to the shell is increased.

Means for Solving the Problems

[0006] A first invention of the present invention is a vehicle seat, comprising a shell having a concave shape corresponding to the body of a seated person and supporting the seated person from the back side, and a cushion body divided into left and right parts and attached to the side of the seated person of the shell. An engaging portion is attached to a vertical wall surface portion of the shell facing the side surface portion of the seated person, and an engaged portion is attached to a surface of the cushion body on the side opposite to the seated person. The cushion body is attached to the engaging portion by sliding and engaging the engaged portion with respect to the engaging portion.

[0007] According to the first invention, when a seated person gets on and off the vehicle seat, in the vertical wall surface portion where a peeling force from the shell is likely to be applied to the cushion body, the engaged portion of the cushion body slides and engages with the engaging portion of the shell to be connected. As a result, the cushion body can be attached to the shell with good workability, and since the direction perpendicular to the sliding direction is the direction in which the peeling force is applied, the attachment strength of the cushion body to the shell can be increased by increasing the strength of the engaging portion and the engaged portion.

[0008] A second invention of the present invention is the first invention described above, wherein the engaging portion is an engaging body having a cylindrical portion erected on the vertical wall surface portion and a diameter-expanded portion provided at the top of the cylindrical portion, and the engaged portion is a resin plate-like body provided with a slit through which the cylindrical portion attached to the skin material covering the cushion body by sewing passes.

[0009] According to the second invention, by engaging the cylindrical portion of the engaging body erected on the shell so as to pass through the slit of the plate-like body attached to the skin material of the cushion body, the plate-like body is caught by the enlarged diameter portion of the engaging body and connected. As a result, the cushion body can be attached to the shell with good workability, and the direction perpendicular to the direction of sliding movement becomes the direction in which the peeling force is applied, and by increasing the strength of the engaging body and the plate-like body, the attachment strength of the cushion body to the shell can be increased.

[0010] According to a third invention of the present invention, in the above first invention, the engaging portion is a wire-like member arranged to extend parallel to the standing wall surface portion, and the engaged portion is a resin hook-like member engageable with the wire-like member attached to the skin material covering the cushion body by sewing.

[0011] According to the third invention, it is connected by engaging a hook-like member attached to the skin material of the cushion body with a wire-like member arranged on the shell. As a result, the cushion body can be attached to the shell with good workability, and the direction perpendicular to the direction of sliding movement becomes the direction in which the peeling force is applied, and by increasing the strength of the wire-like member and the hook-like member, the attachment strength of the cushion body to the shell can be increased.

[0012] According to a fourth invention of the present invention, in the above first invention, the engaging portion is a key-like member having a substantially U-shaped cross section, and the engaged portion is a resin hook-like member engageable with the key-like member attached to the skin material covering the cushion body by sewing.

[0013] According to the fourth invention, it is connected by engaging a hook-like member attached to the skin material of the cushion body with a key-like member arranged on the shell. As a result, the cushion body can be attached to the shell with good workability, and the direction perpendicular to the direction of sliding movement becomes the direction in which the peeling force is applied, and by increasing the strength of the key-like member and the hook-like member, the attachment strength of the cushion body to the shell can be increased.

Brief Description of the Drawings

[0014]

Figure 1

Figure 2

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MODE FOR CARRYING OUT THE INVENTION

[0015] FIGS. 1 to 5 show a first embodiment of the present invention. This embodiment is an example in which the present invention is applied to an automotive seat 1. In each figure, arrows indicate the automotive seat 1 and each direction of the automobile when the automotive seat 1 is attached to the floor of the automobile. In the following description, descriptions regarding directions are made based on this direction.

[0016] As shown in FIGS. 1 and 2, the vehicle seat 1 of the present embodiment is for a driver to sit on particularly in a race such as a rally, and is called a bucket seat. The vehicle seat 1 is fixed to the floor of the vehicle, and includes a cushion part 2 that supports the buttocks and thighs of the seated person P, a back part 3 that supports the waist and back, a shoulder part 4 that supports the shoulders, and a headrest part 5 that supports the head. The vehicle seat 1 is configured by arranging a plurality of cushion bodies 20 on the surface of a shell 10 made of fiber-reinforced plastic and formed in a container shape on the side of the seated person P. Thereby, the cushion part 2, the back part 3, the shoulder part 4, and the headrest part 5 are integrated so as not to be able to move relative to each other. Each cushion body 20 is formed by covering a pad body 20a made of urethane foam resin with a cover body 20b made of cloth or leather. The cover body 20b is formed by sewing a plurality of pieces together to conform to the outer shape of the cushion body 20. Here, the vehicle seat 1 corresponds to the "vehicle seat" in the claims.

[0017] As shown in FIGS. 1 and 2, the cushion part 2 is configured by placing a front main cushion body 21, a rear main cushion body 22, and a pair of left and right side cushion bodies 23, which correspond to the cushion part 2 of the cushion body 20, on a shell cushion part 11 that corresponds to the cushion part 2 of the shell 10.

[0018] The shell cushion part 11 is formed in a concave shape that bulges downward so as to conform to the outer shape of the lower surface of the lower body of the seated person P, and has a bilaterally symmetric shape with respect to the center plane in the left-right direction of the vehicle seat 1. Therefore, the left shell cushion part 11 will be described as a representative. The shell cushion part 11 includes a lower bottom surface part 12, a standing wall surface part 13 that extends obliquely upward from the left end side of the bottom surface part 12, a frame surface part 14 that extends substantially parallel to the bottom surface part 12 from the upper end part of the standing wall surface part 13 in the left direction which is the outer side in the seat width direction, and a folded-back surface part 15 that extends substantially parallel to the standing wall surface part 13 downward from the left end part of the frame surface part 14. On the right side surface which is the inner side surface of the standing wall surface part 13 in the seat width direction, a resin engaging body 16 is attached at approximately the center in the vertical direction. As shown in FIGS. 2 and 3, the engaging body 16 has a disk-shaped base part 16a, a columnar connecting part 16b that stands upright with the same central axis as the base part 16a, and a diameter-expanded part 16c provided at the end part on the opposite side of the base part 16a of the connecting part 16b with the same central axis as the base part 16a and the connecting part 16b. The ratio of the diameters of the base part 16a, the connecting part 16b, and the diameter-expanded part 16c is about 8:1:4. Also, the axial dimensions of the base part 16a, the connecting part 16b, and the diameter-expanded part 16c are substantially the same. The engaging body 16 is arranged singly at the center in the front-rear direction of the standing wall surface part 13, but a plurality of them may be arranged side by side in the front-rear direction as necessary. The resin forming the engaging body 16 is the same as the matrix resin of the shell 10, and the base part 16a is integrally formed and connected to the standing wall surface part 13 when the shell 10 is molded. However, it is not limited to this, and after molding the shell 10, the base part 16a of the engaging body 16 may be attached to the standing wall surface part 13 by adhesion, screwing, etc. In this case, the resin forming the engaging body 16 can be freely selected.

[0019] As shown in FIGS. 1 and 2, the rear main cushion body 22 is formed by covering a pad body 22a having a shape corresponding to the upper surface on the rear side of the bottom surface portion 12 of the shell cushion portion 11 with a cover body 22b. The cover body 22b is formed by sewing a lower lower cover portion 22b1 and an upper upper cover portion 22b2 with a sewing line 22b3. In addition, although a fastener that can be freely opened and closed for inserting the pad body 22a into the cover body 22b is provided between the lower cover portion 22b1 and the upper cover portion 22b2, the illustration is omitted. The lower cover portion 22b1 of the rear main cushion body 22 is attached to the bottom surface portion 12 of the shell cushion portion 11 with a planar fastener, but it may be attached by adhesion. The front main cushion body 21 is only different in shape from the rear main cushion body 22, and the internal structure and the attachment structure to the bottom surface portion 12 are the same.

[0020] The side cushion body 23 is formed by covering a pad body 23a having a shape corresponding to the right surface portion of the standing wall surface portion 13 of the shell cushion portion 11 with a cover body 23b. The cover body 23b is formed by sewing a left cover portion 23b1 on the left side and a right cover portion 23b2 on the right side with upper and lower sewing lines 23b3. In addition, although a fastener that can be freely opened and closed for inserting the pad body 23a into the cover body 23b is disposed between the left cover portion 23b1 and the right cover portion 23b2, the illustration thereof is omitted. On the left side surface, which is the outer surface in the sheet width direction of the left cover portion 23b1, a resin plate-like body 24 is attached substantially at the center in the vertical direction. As shown in FIGS. 2 and 4, the plate-like body 24 has a rectangular shape with the long side direction being the front-rear direction, and a slit 24a that extends in the front-rear direction with an opening facing forward is provided at the center in the vertical direction. The vertical width of the slit 24a is set to be slightly larger than the diameter of the connecting portion 16b of the engaging body 16. The plate-like body 24 is sewn and connected to the left cover portion 23b1 by sewing lines 24b where the upper end side and the lower end side extend in parallel in the front-rear direction. The plate-like body 24 is preferably made of a foamed olefin resin that can be sewn and has high tensile strength. The plate-like body 24 is attached to the left cover portion 23b1 such that when the connecting portion 16b of the engaging body 16 of the shell 10 is inserted through the opening 24c of the slit 24a and the connecting portion 16b abuts against the bottom 24d of the slit 24a, the side cushion body 23 is in an appropriate mounting position with respect to the standing wall surface portion 13. At this appropriate mounting position, when the side cushion body 23 tries to move rightward, the left side surface of the expanded diameter portion 16c of the engaging body 16 is caught by the peripheral portion of the right side surface of the slit 24a of the plate-like body 24, and the rightward movement is blocked. Here, the side cushion body 23 and the plate-like body 24 respectively correspond to the "cushion body" and the "engaged portion" in the claims.

[0021] As shown in FIG. 5, it is also possible to use a plate-like body 25 instead of the plate-like body 24. The plate-like body 25 differs from the plate-like body 24 only in the form of the slit 25a, and the material and the outer shape are the same. The plate-like body 25 is sewn and connected to the left cover portion 23b1 by a sewing line 25b. The slit 25a is not open at the front side, and a circular hole 25c is formed at the front end portion. The diameter of the hole 25c is slightly larger than the diameter of the enlarged diameter portion 16c of the engaging body 16. When the enlarged diameter portion 16c is inserted and slid, and the connecting portion 16b abuts against the bottom portion 25d of the slit 25a, it is attached to the left cover portion 23b1 so that the side cushion body 23 with respect to the vertical wall surface portion 13 is at an appropriate attachment position. At this appropriate attachment position, when the side cushion body 23 tries to move rightward, the left side surface of the enlarged diameter portion 16c of the engaging body 16 is caught by the peripheral portion of the right side surface of the slit 25a of the plate-like body 25, and the rightward movement is blocked.

[0022] As shown in Fig. 1, the back portion 3 is configured by placing a back main cushion body 27a, which corresponds to the back portion 3 of the cushion body 20, and a pair of left and right back side cushion bodies 27b on a shell back portion 11a, which corresponds to the back portion 3 of the shell 10. The back main cushion body 27a has the same internal structure and mounting structure to the shell 10 as the front main cushion body 21 and the rear main cushion body 22, except for the different shape. The back side cushion body 27b has the same internal structure as the side cushion body 23, except for the different shape, and can be mounted to the shell 10 in the same manner as the side cushion body 23. The shoulder portion 4 is configured by placing a shoulder main cushion body 28a, which corresponds to the shoulder portion 4 of the cushion body 20, and a pair of left and right shoulder side cushion bodies 28b on a shell shoulder portion 11b, which corresponds to the shoulder portion 4 of the shell 10. The shoulder main cushion body 28a has the same internal structure and mounting structure to the shell 10 as the front main cushion body 21 and the rear main cushion body 22, except for the different shape. The shoulder side cushion body 28b has the same internal structure as the side cushion body 23, except for the different shape, and can be mounted to the shell 10 in the same manner as the side cushion body 23. That is, the back side cushion body 27b and the shoulder side cushion body 28b can be mounted to the shell 10 with the same structure as the side cushion body 23. The headrest portion 5 is configured by attaching a headrest cushion body 29 that covers the front side of a shell headrest portion 11c having a concave shape that opens forward. The headrest cushion body 29 has the same internal structure and mounting structure to the shell 10 as the front main cushion body 21 and the rear main cushion body 22, except for the different shape.

[0023] The present embodiment configured as described above has the following operational effects. When the seated person P gets on and off the vehicle seat 1, a peeling force from the vertical wall surface portion 13 of the shell cushion portion 11 is likely to be applied to the side cushion body 23. Therefore, the plate-like body 24 attached to the side cushion body 23 slides forward and engages with the engaging body 16 attached to the vertical wall surface portion 13, thereby being connected. As a result, the side cushion body 23 can be attached to the shell 10 with good workability, and since the peeling force is applied in the left-right direction, which is perpendicular to the front-rear direction in which the sliding movement occurs, the attachment strength of the side cushion body 23 to the shell 10 can be increased by enhancing the strength of the engaging body 16 and the plate-like body 24. Specifically, the connecting portion 16b of the engaging body 16 erected on the vertical wall surface portion 13 of the shell cushion portion 11 is engaged so as to pass through the slit 24a of the plate-like body 24 attached to the cover body 20b of the side cushion body 23, and thus the plate-like body 24 is caught by the diameter-expanding portion 16c and connected. As a result, the cushion body can be attached to the shell 10 with good workability, and the direction perpendicular to the direction of the sliding movement becomes the direction in which the peeling force is applied, and the attachment strength of the side cushion body 23 to the shell 10 can be increased by enhancing the strength of the engaging body 16 and the plate-like body 24.

[0024] Figs. 6 and 7 show the second embodiment of the present invention. The difference from the first embodiment is that, instead of the engaging body 16 and the plate-like body 24, a wire member 17 and a hook body 26 are used to attach the side cushion body 23 to the vertical wall surface portion 13 of the shell cushion portion 11. The wire member 17 is a member formed by bending a wire into a hat shape when viewed from above, and has a base portion 17a and a protruding portion 17b that is parallel to the base portion 17a and protrudes to the right. The base portion 17a is attached by being integrally formed or adhered to the vertical wall surface portion 13 of the shell cushion portion 11. The hook body 26 is a resin member and has a base portion 26a that is substantially square when viewed from the left and right directions, and a hook portion 26b that extends downward with a slit 26c that opens downward sandwiched between the base portion 26a. The dimension of the hook portion 26b in the front-rear direction is about half of the dimension of the base portion 26a in the front-rear direction, and is set slightly shorter than the dimension of the protruding portion 17b of the wire member 17 in the front-rear direction. The width of the slit 26c in the left-right direction is set slightly smaller than the diameter of the wire member 17. The hook body 26 is sewn and connected to the left cover portion 23b1 of the side cushion body 23 by a sewing line 26d whose upper end side and lower end side extend parallel to each other in the front-rear direction. The hook body 26 is preferably made of a foamed olefin resin that can be sewn but has high tensile strength. The hook body 26 is attached to the left cover portion 23b1 such that when the protruding portion 17b of the wire member 17 of the shell 10 is inserted through the opening 26e of the slit 26c and the protruding portion 17b abuts against the bottom portion 26f of the slit 26c, the side cushion body 23 is in an appropriate mounting position with respect to the vertical wall surface portion 13. At this appropriate mounting position, when the side cushion body 23 attempts to move to the right, the protruding portion 17b of the wire member 17 is caught by the peripheral portion of the left side surface of the slit 26c of the hook body 26, preventing the movement to the right. Here, the hook body 26 corresponds to the "hook-shaped member" in the claims. Also, the wire member 17 corresponds to the "wire-shaped member" in the claims.

[0025] The present embodiment configured as described above has the following effects. The side cushion body 23 is connected to the wire member 17 disposed on the shell 10 by engaging a hook body 26 attached to the left cover portion 23b1 of the side cushion body 23. As a result, the side cushion body 23 can be attached to the shell 10 with good workability, and since a peeling force is applied in the left - right direction, which is perpendicular to the up - down direction in which the slide movement occurs, the attachment strength of the side cushion body 23 to the shell 10 can be increased by enhancing the strength of the wire member 17 and the hook body 26.

[0026] FIG. 8 and FIG. 9 show a third embodiment of the present invention. The difference from the second embodiment is that a key - shaped member 18 is used instead of the wire member 17. The key - shaped member 18 is a member whose cross - section in the front - rear direction is key - shaped. The key - shaped member 18 has a rectangular base portion 18a made of resin with the up - down direction as the major axis direction when viewed from the left - right direction, and a folded - back portion 18b that extends upward with a slit 18c opening upward sandwiched between the base portion 18a. The base portion 18a is attached by being integrally formed or adhered to the vertical wall surface portion 13 of the shell cushion portion 11. The hook body 26 has the same structure as in the second embodiment and is attached to the side cushion body 23 in the same manner. The dimension of the folded - back portion 18b in the front - rear direction is slightly larger than the dimension of the hook portion 26b of the hook body 26 in the front - rear direction, and the width of the slit 18c in the left - right direction is set slightly larger than the thickness of the hook portion 26b in the left - right direction. The thickness of the folded - back portion 18b in the left - right direction is set slightly smaller than the width of the slit 26c of the hook portion 26b in the left - right direction. The hook body 26 is attached to the left cover portion 23b1 such that when the folded - back portion 18b of the key - shaped member 18 of the shell 10 is inserted through the opening 26e of the slit 26c and the upper end portion of the folded - back portion 18b abuts against the bottom 26f of the slit 26c, the side cushion body 23 is in an appropriate attachment position with respect to the vertical wall surface portion 13. At this appropriate attachment position, when the side cushion body 23 attempts to move rightward, the folded - back portion 18b of the key - shaped member 18 is caught by the peripheral portion of the left side surface of the slit 26c of the hook body 26, preventing the rightward movement.

[0027] The present embodiment configured as described above has the following effects. The hook body 26 attached to the left cover portion 23b1 of the side cushion body 23 is engaged with the key-shaped member 18 disposed on the shell 10, thereby being connected. As a result, the side cushion body 23 can be attached to the shell 10 with good workability, and since a peeling force is applied in the left-right direction, which is perpendicular to the vertical direction, which is the direction of sliding movement, the attachment strength of the side cushion body 23 to the shell 10 can be increased by increasing the strength of the key-shaped member 18 and the hook body 26.

[0028] Although specific embodiments have been described above, the present invention is not limited to their appearance and configuration, and various changes, additions, and deletions are possible without changing the gist of the present invention. For example, the following are examples.

[0029] 1. In the above embodiment, the engaging portions (engaging body 16, wire member 17, key-shaped member 18) are disposed on the vertical wall surface portion 13 of the shell cushion portion 11, and the engaged portions (plate-like body 24, plate-like body 25, hook body 26) are disposed on the side cushion body 23. However, the present invention is not limited to this, and the engaging portions (engaging body 16, wire member 17, key-shaped member 18) may be disposed on the vertical wall surface portion of the shell back portion 11a or the shell shoulder portion 11b, and the engaged portions (plate-like body 24, plate-like body 25, hook body 26) may be disposed on the back side cushion body 27b or the shoulder side cushion body 28b.

[0030] 2. In the above first embodiment, the slit 24a of the plate-like body 24 may be opened rearward and extend in the front-rear direction. In this case, the side cushion body 23 is slid rearward with respect to the engaging body 16 and attached. Further, the extending direction of the slit 24a of the plate-like body 24 is not limited to the front-rear direction. In that case, the side cushion body 23 is slid in the direction in which the slit 24a extends with respect to the engaging body 16 and attached.

[0031] 3. In the above-described embodiment, the present invention is applied to the seat of an automobile, but it may also be applied to the seats installed in vehicles such as airplanes, ships, and trains.

Explanation of Reference Numerals

[0032] 1 Automobile seat (vehicle seat) 2 Cushion part 10 Shell 11 Shell cushion part 13 Upright wall surface part 16 Engaging body (engaging part) 16a Base part 16b Connecting part (cylindrical part) 16c Diameter-expanded part 17 Wire member (wire-shaped member, engaging part) 17a Base part 17b Protruding part 18 Key-shaped member (engaging part) 18a Base body part 18b Folded-back part 18c Slit 20 Cushion body 20a Pad body 20b Cover body 23 Side cushion body (cushion body) 23a Pad body 23b Cover body (skin material) 23b1 Left cover part 23b2 Right cover part 24 Plate-shaped body (engaged part) 24a Slit 24b Sewing line 24c Opening 24d Bottom part 25 Plate-shaped body (engaged part) 25a Slit 25b Sewing line 25c Hole 25d Bottom part 26 Hook body (hook-shaped member, engaged part) 26a Base part 26b Hook part 26c Slit 26d Sewing line 26e opening 26f bottom P sitter

Claims

1. A vehicle seat, comprising: a shell having a concave shape corresponding to the body of a seated person and supporting the seated person from the back side; and a cushion body divided into left and right parts and attached to the side of the seated person of the shell. An engaging portion is attached to a vertical wall surface portion of the shell facing the side surface portion of the seated person. A engaged portion is attached to the surface of the cushion body opposite to the seated person. The cushion body is attached to the vehicle seat by sliding and engaging the engaged portion with the engaging portion.

2. The vehicle seat according to Claim 1, wherein the engaging portion is an engaging body having a cylindrical portion erected on the vertical wall surface portion and a diameter-expanded portion provided at the top of the cylindrical portion. The engaged portion is a resin plate-like body provided with a slit through which the cylindrical portion attached to the skin material covering the cushion body by sewing passes.

3. The vehicle seat according to Claim 1, wherein the engaging portion is a wire-like member extending in parallel with the vertical wall surface portion. The engaged portion is a resin hook-like member engageable with the wire-like member attached to the skin material covering the cushion body by sewing.

4. The vehicle seat according to Claim 1, wherein the engaging portion is a key-like member having a substantially U-shaped cross section. The engaged portion is a resin hook-like member engageable with the key-like member attached to the skin material covering the cushion body by sewing.

Images