Vehicle seats

Abstract

To provide a vehicular seat that facilitates a disassembly work thereof.SOLUTION: A vehicular seat 10 includes: a cushion body covered with a skin 14; a holding member 20 provided integrally inside the cushion body; and a frame member 18 detachably held to the holding member 20.SELECTED DRAWING: Figure 1

Description

[Technical Field]

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

[0002] Vehicle seats (seat cushions) in which urethane foam and a metal frame are integrally molded to ensure ease of assembly with the vehicle body and rigidity have been known for some time (see, for example, Patent Document 1). In this vehicle seat, a groove is formed in the urethane foam on the back surface of the seat cushion where the metal frame is embedded, making it easy to identify the embedded position of the metal frame when the vehicle seat is disassembled for disposal. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 3602196 Summary of the Invention [Problem to be solved by the invention]

[0004] However, when dismantling a vehicle seat (seat cushion), it is not easy to peel off each and every piece of urethane foam that has been integrally molded onto the metal frame. In addition to metal frames, structures such as expanded polypropylene (EPP) are sometimes integrally molded with urethane foam. However, since EPP itself has properties that make it difficult for urethane foam to adhere, the structure is shaped to allow the urethane foam to grip. Therefore, removing the structure from the urethane foam is not easy.

[0005] Thus, when a vehicle seat (seat cushion) is dismantled, the urethane foam does not pose a problem in terms of recyclability, but the metal frame and EPP structures do. In other words, the metal frame and EPP structures are difficult to recycle because the urethane foam cannot be completely removed.

[0006] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a vehicle seat that can be easily disassembled. [Means for solving the problem]

[0007] In order to achieve the above object, the present invention No. 1 Aspects of The vehicle seat includes a cushion body covered with a skin, a holding member integrally provided inside the cushion body, and a frame member detachably held by the holding member.

[0008] No. 1 Aspects of According to the invention, a holding member is integrally provided inside the cushion body, and the frame member is detachably held by the holding member. Therefore, when dismantling the vehicle seat, the frame member can be easily detached from the holding member. In other words, dismantling work can be easily performed.

[0009] Also, The present invention 2 Aspects of The vehicle seats are No. 1 Aspects of The vehicle seat further includes a housing member provided inside the cushion body and housing the frame member.

[0010] No. 2 Aspects of According to the invention, a housing member that houses the frame member is provided inside the cushion body, and therefore the rigidity of the vehicle seat is improved by the housing member.

[0011] Also, The present invention 3 Aspects of The vehicle seats are No. 2 Aspects of In the vehicle seat of claim 1, the storage member has an inclined surface that is pressed by the frame member when the frame member is held by the holding member.

[0012] No. 3 Aspects of According to the invention, the storage member has an inclined surface that is pressed by the frame member when the frame member is held by the holding member. That is, a component force acts on the inclined surface, pressing the storage member outward from the vehicle seat. Therefore, the storage member can be easily positioned relative to the cushion body.

[0013] Also, The present invention 4 Aspects of The vehicle seats are No. 2 or No. 3 Aspects of In the vehicle seat, the accommodation member is not joined to the cushion body.

[0014] No. 4 Aspects of According to the invention, the containing member is not joined to the cushion body, so that the containing member can be easily removed from the cushion body, which means that disassembly can be easily performed. [Effects of the Invention]

[0015] As described above, according to the present invention, the vehicle seat can be easily dismantled. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a schematic plan view showing an internal structure of a seat cushion of a vehicle seat according to an embodiment of the present invention. [Figure 2] FIG. 2 is an enlarged cross-sectional view taken along the line XX in FIG. [Figure 3] FIG. 2 is an enlarged cross-sectional view taken along the line YY in FIG. [Figure 4] FIG. 2 is an enlarged cross-sectional view taken along the line ZZ in FIG. [Figure 5]5 is a schematic enlarged cross-sectional side view of the housing member in FIG. 4. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0017] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. For convenience of explanation, the arrow UP shown in each drawing indicates the upward direction of the seat cushion, the arrow FR indicates the forward direction of the seat cushion, and the arrow LH indicates the leftward direction of the seat cushion. In the following description, when the directions of up / down, front / rear, and left / right are mentioned unless otherwise specified, they refer to up / down in the up / down direction of the seat cushion, front / rear in the front / rear direction of the seat cushion, and left / right in the left / right direction (width direction) of the seat cushion.

[0018] As shown in Fig. 1, a vehicle seat 10 according to this embodiment includes a rear seat cushion 12 extending in the vehicle width direction. The seat cushion 12 has a cushion body 16 (see Figs. 2 to 5) made of an elastic material such as urethane foam, and the cushion body 16 is covered with a surface 14. Inside the cushion body 16, a metal frame member 18 is provided with a predetermined length along a peripheral edge portion 12A of the seat cushion 12.

[0019] 2 to 5, frame member 18 is formed to have a circular cross section, and as shown in Fig. 1, is assembled inside cushion body 16. That is, a resin holding member 20 that detachably holds frame member 18 is integrally provided at an appropriate position inside cushion body 16 on the rear side in the extension direction of a housing member 30, which will be described later.

[0020] 2, the retaining member 20 has a main body 22 in the shape of a substantially rectangular flat plate, and a pair of claws 24 protruding from approximately the center of the lower surface (one surface) of the main body 22, and is embedded integrally inside the cushion body 16 by insert molding when molding the cushion body 16. The main body 22 is formed to the minimum size and shape required for insert molding (a shape that protrudes outward beyond the claws 24).

[0021] Furthermore, since the frame member 18 is inserted between the pair of claw portions 24, the tip portions (lower ends) 24A of the pair of claw portions 24, which are on the back surface (lower surface) side of the seat cushion 12, are exposed from the cushion body 16. In other words, the tip portions 24A of the pair of claw portions 24 are disposed substantially flush with the back surface of the cushion body 16. The distance between the pair of claw portions 24 is set to be substantially the same size as the diameter of the frame member 18.

[0022] Furthermore, because the cushion body 16 is present on the outer sides of the pair of claws 24, the tip ends 24A are configured to be limited in elastic deformation in the direction separating them from each other. The tip ends 24A of the claws 24 are integrally formed with protruding portions 26 having a generally triangular cross section that protrude in the direction in which they approach each other, and the distance between the protruding portions 26 is set much smaller than the diameter of the frame member 18.

[0023] Therefore, when the frame member 18 is inserted from the tip end 24A side of the pair of claws 24, the cushion body 16 and each claw 24 elastically deform in directions separating from each other, pushing the protruding portions 26 away from each other as the frame member 18 is inserted. Then, when the frame member 18 climbs over each protruding portion 26, the cushion body 16 and each claw 24 return to their original positions, and the frame member 18 is held between the pair of claws 24.

[0024] More specifically, the frame member 18 is urged (pressed) downward by the restoring force of the cushion body 16 near the holding member 20, and is thereby held on the inclined surface 26A formed on the upper side of each overhanging portion 26. The inclined surface 26B formed on the lower side of each overhanging portion 26 serves as a guide surface when the frame member 18 is inserted between the pair of claw portions 24.

[0025] Furthermore, at least two holding members 20 are provided so as to be able to hold the frame member 18 disposed at an appropriate position on the rear side in the extension direction of the housing member 30, which will be described later, but this is not limited to this. Three or more holding members 20 may be provided depending on the shape and arrangement position of the frame member 18, etc.

[0026] When the frame member 18 is to be removed from the holding member 20, the frame member 18 is moved downward. As a result, the frame member 18 climbs over the protruding portions 26 while pushing them away from each other. In other words, the cushion body 16 and the claws 24 elastically deform in directions away from each other, allowing the frame member 18 to move. This allows the frame member 18 to come out from between the pair of claws 24 on the holding member 20.

[0027] 1, resin containing members 30 for containing frame members 18 are provided inside the cushion body 16 in predetermined regions including the front corners of the seat cushion 12 (left and right corners that are approximately arc-shaped in a plan view). Each containing member 30 is disposed along the peripheral edge 12A of the seat cushion 12, and has a groove 31 that is closed at the top (open at the bottom) and has a cross section that is approximately inverted "U" shaped, as shown in FIG.

[0028] Each accommodating member 30 is assembled to ensure the rigidity of the seat cushion 12, and is arranged inside the cushion body 16 after the cushion body 16 is molded. That is, each accommodating member 30 is configured not to be joined to the cushion body 16 (is non-jointed). Each accommodating member 30 is arranged in a state in which it will not fall out of the cushion body 16 due to the pressing force generated by the frame member 18 held by the holding member 20.

[0029] 4 and 5, a sloped surface 32 facing downward and toward the rear inside of the seat cushion 12 is formed on part of the bottom surface (the upper surface inside the groove 31) of the groove 31 of the accommodating member 30. Therefore, when a part of the frame member 18 held by the holding member 20 abuts against the sloped surface 32 and applies a load F1 toward the upward side, a load F2 acts on the accommodating member 30 as a component force toward the outward side (front outside) of the seat cushion 12. As a result, the accommodating member 30 is positioned relative to the cushion body 16 and is configured to be disposed in a state where it will not fall out from inside the cushion body 16.

[0030] Moreover, the storage member 30 is molded from expanded polypropylene (EPP) as an example, but is not limited to this. The storage member 30 may be made of any material as long as it can ensure the rigidity of the seat cushion 12 to an extent that it can suppress the movement of the occupant in the event of a vehicle collision, and may be molded from, for example, expanded polystyrene (EPS) or a non-foamed resin material. The storage member 30 may also be configured to be disposed in the center of the front side of the seat cushion 12.

[0031] Next, the operation of the vehicle seat 10 according to this embodiment configured as described above will be described.

[0032] As described above, only the retaining member 20 is integrally embedded in the cushion body 16 of the seat cushion 12 that constitutes the vehicle seat 10. In other words, the frame member 18 and the accommodating member 30 are separate from the cushion body 16 and are assembled to the cushion body 16.

[0033] Specifically, the storage member 30 is arranged inside the cushion body 16 in a predetermined region including the front corners (left and right corners) from the rear surface side of the seat cushion 12, along the peripheral edge 12A of the seat cushion 12. The frame member 18 is inserted into the groove 31 of the storage member 30 from below, and is also inserted between a pair of claws 24 of the holding member 20 provided at an appropriate position on the rear side of the storage member 30 in the extension direction.

[0034] That is, the frame member 18 is inserted while pushing the overhanging portions 26 away from each other due to the elastic deformation of the cushion body 16 and the claws 24 in directions away from each other. Then, when the frame member 18 climbs over the overhanging portions 26, the cushion body 16 and the claws 24 return to their original positions. As a result, the frame member 18 is held on the inclined surfaces 26A on the upper sides of the overhanging portions 26.

[0035] Furthermore, when the frame member 18 is inserted between a pair of claw portions 24 of the holding member 20, the inclined surfaces 26B on the lower side of each protrusion portion 26 formed on the tip portions 24A of the pair of claw portions 24 act as guide surfaces to guide the frame member 18, so that the frame member 18 is smoothly inserted between the pair of claw portions 24.

[0036] Furthermore, as the frame member 18 is held by a pair of claw portions 24 (on the inclined surfaces 26A of each protrusion portion 26) of the holding member 20, in other words, as the frame member 18 is biased downward by the restoring force of the cushion body 16 near the holding member 20, an upward load F1 acts on the inclined surface 32 of the accommodating member 30 against which a portion of the frame member 18 abuts.

[0037] Here, since the inclined surface 32 faces downward on the rear inner side of the seat cushion 12, a load F2 acts on the accommodating member 30 as a component force directed outward (toward the front outer side) of the seat cushion 12. As a result, the accommodating member 30 is positioned relative to the cushion body 16 and is disposed in a state in which it will not fall out from inside the cushion body 16.

[0038] Because the seat cushion 12 of the vehicle seat 10 according to this embodiment is configured as described above, when the seat cushion 12 is to be disposed of, the seat cushion 12 can be easily disassembled. That is, the seat cushion 12 can be easily disassembled into the cover 14, the cushion body 16, the frame member 18, the holding member 20, and the housing member 30. This will be explained below.

[0039] When dismantling the seat cushion 12, first, the cover 14 is removed from the cushion body 16. Then, the frame member 18 is removed from the cushion body 16. That is, the frame member 18 is removed from between the pair of claw portions 24 of the holding member 20. When removing the frame member 18 from between the pair of claw portions 24 of the holding member 20, the frame member 18 is moved downward.

[0040] As a result, the frame member 18 climbs over the protruding portions 26 of the pair of claws 24 while pushing them away from each other. In other words, the cushion body 16 and the claws 24 elastically deform in directions away from each other, allowing the frame member 18 to move. This allows the frame member 18 to easily come out from between the pair of claws 24 of the holding member 20. Once the frame member 18 has come out of the holding member 20, the frame member 18 is removed from inside the groove 31 of the accommodating member 30.

[0041] Next, the accommodating member 30 is removed from the cushion body 16. Here, when the frame member 18 is held by the holding member 20, the inclined surface 32 formed on part of the bottom surface of the groove portion 31 of the accommodating member 30 is pressed upward and outward (toward the front and outside) by part of the frame member 18, so that the accommodating member 30 does not fall out from inside the cushion body 16; it is not joined to the cushion body 16. Therefore, the accommodating member 30 can be easily removed from the cushion body 16.

[0042] Finally, the retaining member 20 is removed from the cushion body 16. The retaining member 20 is provided integrally with the cushion body 16 by insert molding, but the tip portions 24A of the pair of claw portions 24 of the retaining member 20 are exposed from the back surface side of the cushion body 16, so the position of the retaining member 20 can be easily determined. In addition, the main body portion 22 of the retaining member 20 is also formed to the minimum size and shape required for insert molding. Therefore, the retaining member 20 can also be easily peeled off (removed) from the cushion body 16.

[0043] As described above, the structure of the seat cushion 12 of the vehicle seat 10 according to this embodiment allows for easy dismantling of the seat cushion 12. Therefore, the cover 14, cushion body 16, frame member 18, holding member 20, and storage member 30 that constitute the seat cushion 12 can be easily recycled.

[0044] Furthermore, in this embodiment, the cushion body 16 is configured to have the accommodation member 30 that accommodates the frame member 18 inside, and therefore the rigidity of the seat cushion 12 can be improved by the accommodation member 30. Furthermore, the accommodation member 30 has an inclined surface 32 that is pressed by a part of the frame member 18 when the frame member 18 is held by the holding member 20, and therefore can be easily positioned with respect to the cushion body 16.

[0045] While the vehicle seat 10 according to this embodiment has been described above with reference to the drawings, the vehicle seat 10 according to this embodiment is not limited to the one shown in the drawings and may be modified in design as appropriate within the scope of the present invention. For example, the accommodating member 30 may also be configured to be integrally provided with the cushion body 16, similar to the holding member 20.

[0046] Furthermore, the inclined surface 32 formed on a part of the bottom surface of the groove portion 31 of the accommodating member 30 is not limited to being directed downward and toward the rear inside of the seat cushion 12. The inclined surface 32 only needs to be inclined in a direction and at an angle that causes a component force (load F2) toward the outside of the seat cushion 12 to act on the accommodating member 30 when pressed by a part of the frame member 18, and the direction and angle are set appropriately depending on the part of the frame member 18 with which it comes into contact, etc.

[0047] Furthermore, the groove 31 of the accommodating member 30 is not limited to a configuration in which the upper side is closed (the lower side is open) and the cross section is formed in a generally inverted "U" shape, but may be configured, for example, to have a generally "U" shape in which the outer side of the seat cushion 12 is closed (the inner side is open). In this case, the ease of disassembling the seat cushion 12 is lower than in the above configuration, but because the frame member 18 is not exposed from the accommodating member 30, the risk of the frame member 18 falling off from the accommodating member 30 when the seat cushion 12 is in use can be further reduced. [Explanation of symbols]

[0048] 10 Vehicle seats 14 Epidermis 16 Cushion body 18 Frame members 20 Retaining member 30 Storage member 32 Slope

Claims

[Claim 1] A cushion body covered with skin, a holding member integrally provided inside the cushion body; a frame member detachably held by the holding member; a housing member that is not joined to the cushion body and is provided inside the cushion body, and that houses the frame member; Equipped with The accommodating member has an inclined surface that is pressed outward by the frame member when the frame member is held by the holding member to prevent the accommodating member from falling out from inside the cushion body.

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