Seat for vehicle

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 technology]

[0002] Conventionally, vehicle seats have been known that include a shell attached to a seat frame and a cushion attached to cover the surface of the shell facing the occupant. Patent Document 1 describes a vehicle seat of this type, in which a magnet is attached to the surface of the shell and a recess is formed thereon, and a magnetic body is attached to the back surface of the cushion and a protrusion is formed thereon. When the cushion is positioned relative to the shell, the magnet and the magnetic body are joined, and the recess and protrusion are engaged with each other, thereby attaching the cushion to the shell. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2012-192896 Summary of the Invention [Problem to be solved by the invention]

[0004] The technology described in Patent Document 1 has a problem in that, at the joint interface between the shell and the cushioning material, when a shear force parallel to the interface is applied to the cushioning material, the joint strength is high, but when a peel force perpendicular to the interface is applied to the cushioning material. Specifically, when the occupant gets in or out of the seat, the shell is susceptible to the application of a peel force that tries to peel the cushioning material from the shell, which can cause the cushioning material to peel off from the shell.

[0005] In view of these problems, an object of the present invention is to provide a vehicle seat in which a cushioning material is attached to cover the surface of a shell, in which the cushioning material can be attached to the shell with ease and the attachment strength of the cushioning material to the shell is increased. [Means for solving the problem]

[0006] The 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 halves attached to the seated person side of the shell, wherein an engaging portion is attached to the upright wall surface portion of the shell facing the side portion of the seated person, and an engaged portion is attached to the surface of the cushion body opposite the seated person, and the cushion body is attached to the cushion body by sliding the engaged portion relative to the engaging portion to engage it.

[0007] According to the first aspect of the present invention, when a seated person gets on or off the vehicle seat, the cushion body is connected by sliding the engaged portion of the cushion body relative to the engaging portion of the shell to engage with it at the upright wall surface portion where a peeling force from the shell is likely to be applied to the cushion body. This allows the cushion body to be attached to the shell with good workability, and because the peeling force is applied in the direction perpendicular to the sliding direction, increasing the strength of the engaging portion and the engaged portion increases the attachment strength of the cushion body to the shell.

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

[0009] According to the second aspect of the present invention, the cylindrical portion of the engaging body erected on the shell is inserted into a slit in a plate-like body attached to the surface material of the cushion body, and the plate-like body is hooked onto and connected to the enlarged diameter portion of the engaging body. This allows the cushion body to be attached to the shell with ease, and the direction perpendicular to the sliding direction is the direction in which a peeling force is applied, thereby increasing the strength of the engaging body and the plate-like body and thereby increasing the attachment strength of the cushion body to the shell.

[0010] The third invention of the present invention is characterized in that, in the first invention, the engaging portion is a wire-shaped member extending parallel to the vertical wall surface portion, and the engaged portion is a hook-shaped member made of resin that can engage with the wire-shaped member and is attached by sewing to a skin material that covers the cushion body.

[0011] According to the third aspect of the present invention, the hook-shaped member attached to the cushion's cover material is connected by engaging with the wire-shaped member disposed on the shell. This allows the cushion to be attached to the shell with good workability, and the direction perpendicular to the sliding direction is the direction in which the peeling force is applied, thereby increasing the strength of the wire-shaped member and the hook-shaped member, thereby increasing the attachment strength of the cushion to the shell.

[0012] The fourth invention of the present invention is characterized in that, in the first invention, the engaging portion is a hook-shaped member having a substantially U-shaped cross section, and the engaged portion is a hook-shaped member made of resin that is attached by sewing to a skin material covering the cushion body and can engage with the hook-shaped member.

[0013] According to the fourth aspect of the present invention, the cushion body is connected by engaging a hook-shaped member attached to the cover material of the cushion body with a hook-shaped member disposed on the shell. This allows the cushion body to be attached to the shell with good workability, and the direction perpendicular to the sliding movement is the direction in which the peeling force is applied, thereby increasing the strength of the hook-shaped member and the hook-shaped member, thereby increasing the attachment strength of the cushion body to the shell. [Brief explanation of the drawings]

[0014] [Figure 1] 1 is a perspective view of a vehicle seat according to a first embodiment of the present invention, as viewed obliquely from the front. [Figure 2] FIG. 2 is a cross-sectional view taken along the line II-II of FIG. [Figure 3] FIG. [Figure 4] FIG. [Figure 5] 10A and 10B are diagrams showing modified examples of the plate-shaped body; [Figure 6] FIG. 4 is a view corresponding to FIG. 2 and showing a second embodiment of the present invention. [Figure 7] FIG. 7 is a cross-sectional view taken along the line VII-VII of FIG. 6. [Figure 8] FIG. 10 is a view corresponding to FIG. 2 and showing a third embodiment of the present invention. [Figure 9] 9 is a cross-sectional view taken along the line IX-IX of FIG. 8. DETAILED DESCRIPTION OF THE INVENTION

[0015] 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 automobile seat 1. In each figure, arrows indicate the directions of the automobile seat 1 and the automobile when the automobile seat 1 is attached to the floor of the automobile. In the following description, descriptions regarding directions will be made based on these directions.

[0016] As shown in FIGS. 1 and 2 , an automobile seat 1 according to this embodiment is known as a bucket seat, and is used by drivers, particularly in rallies and other races. The automobile seat 1 is fixed to the floor of the automobile and includes a cushion 2 for supporting the buttocks and thighs of an occupant P, a back 3 for supporting the lower back and back, a shoulder 4 for supporting the shoulders, and a headrest 5 for supporting the head. The automobile seat 1 is configured by a shell 10 formed in a container-like shape from fiber-reinforced plastic, and multiple cushion bodies 20 are disposed on the surface of the shell 10 facing the occupant P. As a result, the cushion 2, back 3, shoulder 4, and headrest 5 are integrated and cannot move relative to each other. The cushion body 20 is formed by covering a pad body 20a made of urethane foam resin with a cover body 20b made of fabric or leather. The cover body 20b is formed by sewing multiple pieces together to fit the outer shape of the cushion body 20. Here, the automobile seat 1 corresponds to the "vehicle seat" in the claims.

[0017] As shown in Figures 1 and 2, the cushion section 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 are parts corresponding to the cushion section 2 of the cushion body 20, on top of a shell cushion section 11, which is the part corresponding to the cushion section 2 of the shell 10.

[0018] The shell cushion portion 11 is formed in a concave shape that bulges downward to fit the outer shape of the lower surface of the lower half of the body of the seated occupant P, and is symmetrical with respect to the center plane in the left-right direction of the automobile seat 1, so the left shell cushion portion 11 will be described as a representative example. The shell cushion portion 11 has a lower bottom surface portion 12, an upright wall surface portion 13 extending from the left end side of the bottom surface portion 12 toward the upper left, a frame surface portion 14 extending from the upper end of the upright wall surface portion 13 toward the left direction, which is the outer side in the seat width direction, approximately parallel to the bottom surface portion 12, and a folded surface portion 15 extending downward from the left end of the frame surface portion 14 approximately parallel to the upright wall surface portion 13. A resin engaging body 16 is attached to the right side surface, which is the inner surface in the seat width direction, of the upright wall surface portion 13, approximately in the vertical center. As shown in Figures 2 and 3, the engaging body 16 has a disk-shaped base portion 16a, a cylindrical connecting portion 16b that is erected on the same central axis as the base portion 16a, and an expanded-diameter portion 16c that is erected on the opposite end of the connecting portion 16b from the base portion 16a and has the same central axis as the base portion 16a and the connecting portion 16b. The ratio of the diameters of the base portion 16a, the connecting portion 16b, and the expanded-diameter portion 16c is approximately 8:1:4. The axial dimensions of the base portion 16a, the connecting portion 16b, and the expanded-diameter portion 16c are also approximately the same. One engaging body 16 is disposed in the center of the upright wall portion 13 in the front-to-rear direction, but multiple engaging bodies may be disposed side by side in the front-to-rear direction as necessary. The resin forming the engaging body 16 is the same as the matrix resin of the shell 10. When the shell 10 is molded, the base portion 16a is integrally molded and connected to the upright wall portion 13. However, the present invention is not limited to this, and after molding the shell 10, the base portion 16a of the engaging body 16 may be attached to the vertical wall surface portion 13 by adhesive, screwing, etc. In this case, the resin from which the engaging body 16 is formed 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 shaped to fit the upper rear surface of the bottom surface 12 of the shell cushion portion 11 with a cover body 22b. The cover body 22b is formed by sewing a lower cover portion 22b1 and an upper cover portion 22b2 together along a seam 22b3. A fastener that can be opened and closed to insert the pad body 22a into the cover body 22b is disposed between the lower cover portion 22b1 and the upper cover portion 22b2, but is not shown. The lower cover portion 22b1 of the rear main cushion body 22 is attached to the bottom surface 12 of the shell cushion portion 11 with a surface fastener, but may also be attached by adhesive. The front main cushion body 21 differs from the rear main cushion body 22 only in shape, and the internal structure and attachment structure to the bottom surface 12 are the same.

[0020] The side cushion body 23 is formed by covering a pad body 23a, which has a shape corresponding to the right surface portion of the upright wall surface portion 13 of the shell cushion portion 11, with a cover body 23b. The cover body 23b is formed by sewing together a left cover portion 23b1 on the left side and a right cover portion 23b2 on the right side along an upper and lower seam line 23b3. A fastener that can be opened and closed to insert the pad body 23a into the cover body 23b is disposed between the left cover portion 23b1 and the right cover portion 23b2, but is not shown in the figure. A resin plate-like body 24 is attached to the left side surface, which is the outer surface in the seat width direction, of the left cover portion 23b1, approximately in the vertical center. As shown in Figures 2 and 4, the plate-like body 24 has a rectangular shape with its long side extending in the front-to-rear direction, and a slit 24a extending in the front-to-rear direction is provided in the vertical center with an opening facing forward. The vertical width of the slit 24a is set slightly larger than the diameter of the connecting portion 16b of the engaging body 16. The upper and lower ends of the plate-like body 24 are connected to the left cover portion 23b1 by stitching along seams 24b that extend parallel to the front-to-rear direction. Although the plate-like body 24 can be sewn, a plate-like body made of a foamed olefin resin with high tensile strength is preferably used. The plate-like body 24 is attached to the left cover portion 23b1 so that the side cushion body 23 is properly attached to the upright wall surface portion 13 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. In this proper attachment position, if the side cushion body 23 attempts to move rightward, the left side surface of the enlarged diameter portion 16c of the engaging body 16 catches on the peripheral portion of the right side surface of the slit 24a of the plate-like body 24, preventing rightward movement. Here, the side cushion body 23 and the plate-like body 24 correspond to the "cushion body" and the "engaged portion" in the claims, respectively.

[0021] As shown in FIG. 5, plate-like body 25 can be used instead of plate-like body 24. Plate-like body 25 differs from plate-like body 24 only in the shape of slit 25a; the material and external shape are the same. Plate-like body 25 is connected to left cover portion 23b1 by sewing along stitching lines 25b. Slit 25a is closed at the front, and a circular hole 25c is formed at the front end. The diameter of hole 25c is slightly larger than the diameter of enlarged diameter portion 16c of engaging body 16, and when enlarged diameter portion 16c is inserted and slid so that connecting portion 16b abuts against bottom portion 25d of slit 25a, side cushion body 23 is attached to left cover portion 23b1 in the correct mounting position relative to upright wall surface portion 13. In this proper mounting position, when the side cushion body 23 attempts to move to the right, the left side surface of the enlarged diameter portion 16c of the engaging body 16 gets caught on the peripheral portion of the right side surface of the slit 25a of the plate-shaped body 25, preventing the movement to the right.

[0022] As shown in FIG. 1 , the back section 3 is configured by placing a back main cushion body 27a and a pair of left and right back side cushion bodies 27b, which correspond to the back section 3 of the cushion body 20, on a shell back section 11a, which corresponds to the back section 3 of the shell 10. The back main cushion body 27a differs from the front main cushion body 21 and the rear main cushion body 22 only in shape, but has the same internal structure and attachment structure to the shell 10. The back side cushion body 27b differs from the side cushion body 23 only in shape, but has the same internal structure, and can be attached to the shell 10 in the same way as the side cushion body 23. The shoulder section 4 is configured by placing a shoulder main cushion body 28a and a pair of left and right shoulder side cushion bodies 28b, which correspond to the shoulder section 4 of the cushion body 20, on a shell shoulder section 11b, which corresponds to the shoulder section 4 of the shell 10. The shoulder main cushion body 28a differs from the front main cushion body 21 and the rear main cushion body 22 only in shape, but has the same internal structure and attachment structure to the shell 10. The shoulder side cushion body 28b differs only in shape from the side cushion body 23, but has the same internal structure, and can be attached to the shell 10 in the same way as the side cushion body 23. That is, the back side cushion body 27b and the shoulder side cushion body 28b can be attached 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 the shell headrest portion 11c, which has a concave shape that opens forward. The headrest cushion body 29 differs only in shape from the front main cushion body 21 and the rear main cushion body 22, but has the same internal structure and attachment structure to the shell 10.

[0023] The present embodiment configured as described above provides the following advantageous effects. When a seated occupant P gets in or out of the automobile seat 1, the side cushion body 23 is likely to be subjected to a peeling force from the upright wall surface portion 13 of the shell cushion portion 11. Therefore, the plate-like body 24 attached to the side cushion body 23 slides forward to engage with and connect to the engaging body 16 attached to the upright wall surface portion 13. This allows the side cushion body 23 to be attached to the shell 10 with ease, and because the peeling force is applied in the left-right direction, which is perpendicular to the front-to-rear direction of the sliding movement, the strength of the engaging body 16 and the plate-like body 24 is increased, thereby increasing the attachment strength of the side cushion body 23 to the shell 10. Specifically, the connecting portion 16b of the engaging body 16 erected on the upright 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, thereby causing the plate-like body 24 to be caught on the enlarged diameter portion 16c and connected. This allows the cushion body to be attached to the shell 10 with good workability, and the direction perpendicular to the sliding direction is the direction in which the peeling force is applied, thereby increasing the strength of the engaging body 16 and the plate-like body 24 and thereby increasing the attachment strength of the side cushion body 23 to the shell 10.

[0024] 6 and 7 show a second embodiment of the present invention. This embodiment differs from the first embodiment in that a wire member 17 and a hook member 26 are used to attach a side cushion body 23 to the upright wall surface portion 13 of the shell cushion portion 11, instead of the engagement member 16 and plate-like member 24. 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 to the upright wall surface portion 13 of the shell cushion portion 11 by being integrally molded or connected by adhesive. The hook member 26 is a resin member and has a base portion 26a that is approximately square when viewed from the left and right, and a hook portion 26b that extends downward, with a slit 26c opening downward between the base portion 26a and the hook portion 26b. The front-rear dimension of the hook portion 26b is approximately half the front-rear dimension of the base portion 26a and is slightly shorter than the front-rear dimension of the protruding portion 17b of the wire member 17. The left-right width of the slit 26c is slightly smaller than the diameter of the wire member 17. The hook body 26 is connected by sewing to the left cover portion 23b1 of the side cushion body 23 along stitching lines 26d that extend parallel to the front-rear direction at its upper and lower ends. Although sewing is possible, the hook body 26 is preferably made of a foamed olefin resin with high tensile strength. The hook body 26 is attached to the left cover portion 23b1 such that the protruding portion 17b of the wire member 17 of the shell 10 is inserted through the opening 26e of the slit 26c, and when the protruding portion 17b abuts against the bottom 26f of the slit 26c, the side cushion body 23 is in the correct mounting position relative to the upright wall surface portion 13. In this proper mounting position, if the side cushion body 23 attempts to move to the right, the protrusion 17b of the wire member 17 gets caught on 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 provides the following advantageous effects. The hook body 26 attached to the left cover portion 23b1 of the side cushion body 23 is engaged with the wire member 17 disposed on the shell 10 to connect them. This allows the side cushion body 23 to be attached to the shell 10 with ease, and because a peeling force is applied in the left-right direction, which is perpendicular to the up-down direction, which is the direction of sliding movement, increasing the strength of the wire member 17 and the hook body 26 increases the attachment strength of the side cushion body 23 to the shell 10.

[0026] 8 and 9 show a third embodiment of the present invention. This embodiment differs from the second embodiment in that a hook-shaped member 18 is used instead of the wire member 17. The hook-shaped member 18 has a hook-shaped cross section in the front-rear direction. The hook-shaped member 18 is made of resin and has a rectangular base portion 18a with its longitudinal axis extending up and down when viewed from the left and right. The base portion 18a has a folded portion 18b extending upward, with a slit 18c opening upward between the base portion 18a and the folded portion 18b. The base portion 18a is attached to the upright wall portion 13 of the shell cushion portion 11 by being integrally molded or adhesively connected. 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 front-rear dimension of the folded portion 18b is slightly larger than the front-rear dimension of the hook portion 26b of the hook body 26, and the left-right width of the slit 18c is slightly larger than the left-right thickness of the hook portion 26b. The left-right thickness of folded portion 18b is set slightly smaller than the left-right width of slit 26c of hook portion 26b. Hook body 26 is attached to left cover portion 23b1 so that when folded portion 18b of hook-shaped member 18 of shell 10 is inserted through opening 26e of slit 26c and the upper end of folded portion 18b abuts against bottom 26f of slit 26c, side cushion body 23 is in the proper attachment position relative to upright wall surface portion 13. In this proper attachment position, if side cushion body 23 attempts to move rightward, folded portion 18b of hook-shaped member 18 gets caught on the peripheral portion of the left side surface of slit 26c of hook body 26, preventing rightward movement.

[0027] The present embodiment configured as described above provides the following advantageous effects. The hook members 26 attached to the left cover portion 23b1 of the side cushion body 23 are engaged with the hook-shaped members 18 disposed on the shell 10 to connect them. This allows the side cushion body 23 to be attached to the shell 10 with ease, and because a peeling force is applied in the left-right direction, which is perpendicular to the up-down direction, which is the direction of sliding movement, increasing the strength of the hook-shaped members 18 and the hook members 26 increases the attachment strength of the side cushion body 23 to the shell 10.

[0028] Although specific embodiments have been described above, the present invention is not limited to those external appearances and configurations, and various modifications, additions, and deletions are possible within the scope of the present invention. For example, the following can be mentioned.

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

[0030] 2. In the first embodiment, the slits 24a of the plate-like body 24 may be open rearward and extend in the front-rear direction. In this case, the side cushion body 23 is attached to the engaging body 16 by sliding it rearward. Furthermore, the extending direction of the slits 24a of the plate-like body 24 is not limited to the front-rear direction. In this case, the side cushion body 23 is attached to the engaging body 16 by sliding it in the extending direction of the slits 24a.

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

[0032] 1. Automobile seats (vehicle seats) 2 Cushion part 10 shells 11 Shell cushion part 13 Standing wall section 16 Engaging body (engaging part) 16a Base 16b Connecting part (cylindrical part) 16c Expanded section 17 Wire member (wire-shaped member, engagement portion) 17a Base 17b Protrusion 18 Hook-shaped member (engagement part) 18a Base part 18b Folded 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 stitching line 24c opening 24d bottom 25 Plate body (engaged part) 25a slit 25b stitching line 25c hole 25d bottom 26 Hook body (hook-shaped member, engaged portion) 26a base 26b Hook part 26c slit 26d Stitching line 26e opening 26f bottom P seated person

Claims

1. A vehicle seat, The seat cushion comprises 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 halves attached to the seated person side of the shell, an engaging portion is attached to a vertical wall surface portion of the shell that faces a side surface portion of the seated person, an engaging portion is attached to a surface of the cushion body opposite to the seat occupant, The vehicle seat is attached to the cushion body by sliding the engaged portion relative to the engaging portion to engage with it.

2. 2. The vehicle seat of claim 1, the engaging portion is an engaging body having a cylindrical portion erected on the upright wall surface portion and an expanded diameter portion provided on a top of the cylindrical portion, The engaged portion is a plate-like body made of resin and attached by sewing to a cover material covering the cushion body, the plate-like body having a slit for passing the cylindrical portion therethrough.

3. 2. The vehicle seat of claim 1, the engaging portion is a wire-like member extending parallel to the upright wall surface portion, The engaged portion is a hook-shaped member made of resin and attached by sewing to a cover material covering the cushion body, and is engageable with the wire-shaped member.

4. 2. The vehicle seat of claim 1, The engaging portion is a hook-shaped member having a substantially U-shaped cross section, The engaged portion is a hook-shaped member made of resin and attached by sewing to a cover material covering the cushion body, and is engageable with the hook-shaped member.

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