Vehicle seats

Abstract

To secure installation space for both of a hook part and a fixing material while restraining enlargement of a structure in the direction in which a cover material is pulled to the surface side.SOLUTION: A hole 23 for use in fixation to a baseplate 10 is formed in a terminal part 21 of a cover material 20 covering a cushion material. The baseplate 10 is formed projecting from a reverse surface of the baseplate 10, and has a hook part 16 to be inserted into and hooked on the hole 23 of the cover material 20. The terminal part 21 of the cover material 20 has the hook part 16 being inserted in and hooked on the hole 23, and has a fixing material 25 driven in the baseplate 10 via the terminal part 21 and fixed to the baseplate 10. The hook part 16 and the fixing material 25 are positioned so as not to overlap in a direction in which the terminal part 21 of the cover material 20 is pulled.SELECTED DRAWING: Figure 1

Description

[Technical field]

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

[0002] In Patent Document 1, for example, when fastening an end portion of a cover material that covers a cushion material of a motorcycle seat to a flange portion of a base plate of the seat, the end portion of the cover material is temporarily fastened to a hook portion for temporary fastening formed on the flange portion of the base plate. Furthermore, the end portion of the cover material is permanently fastened by a staple on the outside of each hook portion of the flange portion using a tool such as a stapler. In other words, a technique of simultaneously using a hook portion and a staple when fastening a cover material of a vehicle seat is conventionally known. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2014-151789 A Summary of the Invention [Problem to be solved by the invention]

[0004] Incidentally, when an occupant sits on a vehicle seat or when the center of gravity of the occupant moves, the cushion material of the cover material for the vehicle seat is deformed, and the end portion is pulled toward the surface of the vehicle seat. In the technology of Patent Document 1, the hook portion and the staple are arranged side by side in the direction in which the end portion of the cover material is pulled toward the surface. Therefore, it is necessary to secure a position in the flange portion of the base plate for attaching the hook portion and the staple side by side, which raises concerns about the increase in size of the structure. Furthermore, if the hook portion and the staple (fixing material) are arranged close to each other to avoid an increase in size of the structure, there may be cases where a sufficient mounting space for both of them cannot be secured.

[0005] The present invention has been made in consideration of the above-mentioned circumstances, and its objective is to ensure installation space for both the hook portion and the fixing material while suppressing the increase in size of the structure in the direction in which the cover material is pulled toward the surface. [Means for solving the problem]

[0006] In order to solve the above problems, the invention described in claim 1 Vehicle seat relating to teeth, a base plate having a cushioning material provided on a surface thereof and supporting the cushioning material; A cover material that covers the cushion material and has an end portion fixed to the base plate; Equipped with A hole is formed in an end portion of the cover material to be used for fixing to the base plate, the base plate has a hook portion formed to protrude from a rear surface of the base plate and to be passed through the hole of the cover material for hooking; The base plate has a plurality of through holes formed therein, the through holes passing through the base plate in a thickness direction, The hook portion is passed through the hole to hook the terminal portion of the cover material, and a fixing material is driven into the base plate via the terminal portion, so that the cover material is fixed to the base plate. The hook portion and the fixing member are arranged so as not to overlap in the direction in which the end portion of the cover material is pulled. 、 The hook portion and the plurality of through holes are arranged so as not to overlap with each other in the front-rear direction of the base plate. It is characterized by:

[0007] The invention according to claim 2 Vehicle seat relating to teeth, a base plate having a cushioning material provided on a surface thereof and supporting the cushioning material; A cover material that covers the cushion material and has an end portion fixed to the base plate; Equipped with A hole is formed in an end portion of the cover material to be used for fixing to the base plate, the base plate has a hook portion formed to protrude from a rear surface of the base plate and to be passed through the hole of the cover material for hooking; The terminal portion of the cover material is The terminal portion has an elastic portion that expands and contracts in at least one direction in which the terminal portion is pulled and in the opposite direction, The hook portion is passed through the hole and hooked, and a fixing material is driven into the base plate via the terminal portion, so that the fixing member is fixed to the base plate. the hook portion and the fixing material are arranged so as not to overlap in a direction in which the terminal portion of the cover material is pulled, The stretchable portion is provided at a portion of the end portion of the cover material that is fixed by the fixing material, and is not provided at a portion where the hook portion is hooked. It is characterized by:

[0008] The invention described in claim 3 is 2 In the vehicle seat described in A plurality of through holes are formed in the base plate so as to penetrate the base plate in a thickness direction, The hook portion and the plurality of through holes are arranged so as not to overlap with each other in the front-rear direction of the base plate. It is characterized by:

[0009] The invention described in claim 4 is Any one of 1 to 3 In the vehicle seat described in The hook portion is formed in a plurality of portions on the front and rear of the base plate, The end portions of the cover material are hooked by passing the hook portions through the holes at the front and rear portions of the base plate, and the fixing materials are driven into the base plate via the end portions at the left and right sides of the base plate, so that the cover material is fixed to the base plate. It is characterized by:

[0010] The invention described in claim 5 is the vehicle seat described in any one of claims 1 to 4, The hook portion is formed in a plurality of portions on the front and rear of the base plate, The end portions of the cover material are hooked by passing the hook portions through the holes at the front and rear portions of the base plate, and the fixing materials are driven into the base plate via the end portions at the left and right sides of the base plate, so that the cover material is fixed to the base plate. It is characterized by:

[0011] The invention described in claim 6 is the vehicle seat described in any one of claims 1 to 5, The terminal portion of the cover material is bent from the front surface side to the back surface side of the base plate and fixed, and a bent portion, which is a portion of the cover material bent from the front surface side to the back surface side of the base plate, is along an edge portion of the base plate, The hook portion has a head portion located at a tip end in a direction protruding from the rear surface of the base plate, the head portion having a short side and a long side in a rear view of the base plate, The head is disposed such that the direction of the long side is perpendicular to the bent portion of the cover material when viewed from the back side of the base plate. It is characterized by:

[0012] The invention described in claim 7 is the vehicle seat described in any one of claims 1 to 6, a portion of the terminal portion of the cover material in which one of the adjacent holes is located and a portion of the terminal portion of the cover material in which the other of the adjacent holes is located are overlapped with each other; One of the hook portions of the base plate is passed through and hooked onto both the one hole and the other hole. It is characterized by:

[0013] The invention described in claim 8 is the vehicle seat described in any one of claims 1 to 7, A temporary fastening hole is formed in a portion of the terminal portion of the cover material that is fixed by the fixing material, the temporary fastening hole being used for temporary fastening to the base plate, The base plate has temporary fastening hook portions that protrude from a rear surface of the base plate, are passed through the temporary fastening holes of the cover material, and are formed in a number corresponding to the number of the temporary fastening holes. It is characterized by: Effect of the Invention

[0014] According to the invention described in claim 1, the hook portion and the fixing material are not arranged side by side in the direction in which the terminal portion of the cover material is pulled toward the surface, thereby making it possible to ensure installation space for both the hook portion and the fixing material while suppressing the increase in size of the structure in the direction in which the cover material is pulled toward the surface. In addition, forming multiple through holes in the base plate not only contributes to reducing the weight of the entire seat, but also improves drainage and breathability, and in particular reduces discomfort when sitting by allowing air to escape from the cushioning material and dissipating heat. The hook parts are arranged so as not to overlap with the multiple through holes that provide such effects in the front-to-rear direction of the base plate, so the hook parts can be arranged in a position with relatively high strength. This allows the cover material to be fixed in a good condition by the hook parts.

[0015] According to the invention described in claim 2, Since the hook portion and the fixing material are not positioned side by side in the direction in which the terminal portion of the cover material is pulled toward the surface, it is possible to ensure installation space for both the hook portion and the fixing material while suppressing the increase in size of the structure in the direction in which the cover material is pulled toward the surface. In addition, the expansion and contraction is caused by the fixing material at the end of the cover material. Since it is provided at the portion to be fixed, it can be easily fixed with a fixing material. Furthermore, the stretchable portion is not provided at the portion where the hook portion is to be hooked. The part is hooked onto the end of the cover material at a location that does not have a stretchable part. Therefore, it is easier to prevent the cover material from coming off than if it were hooked on a part with an elastic part, for example. Moreover, the lack of an expandable section leads to cost reduction. .

[0016] According to the invention described in claim 3, Forming multiple through holes in the base plate not only contributes to reducing the weight of the entire seat, but also improves drainage and breathability, and in particular reduces discomfort when seated by allowing air to escape from the cushioning material and dissipating heat. The hook parts are positioned so as not to overlap with the multiple through holes that provide this effect in the front-to-rear direction of the base plate, so the hook parts can be positioned in a relatively strong position. This allows the cover material to be well fixed by the hook parts. can.

[0017] According to the invention described in claim 4, The base plate can be made thinner in the area where the hooks are provided than in the area where the fixing materials are driven in, because the hooks provide additional strength. In other words, the plate can be made thicker in areas where strength is required, and the covering material can be fixed by driving in the fixing materials, while the plate can be made thinner in areas where strength is not required as much, and the covering material can be fixed by the hooks in order to reduce weight. The left and right sides of the base plate are the areas where the legs of the occupant come into contact when seated, so these are used as the areas where the fixing materials are driven in, improving the strength of the left and right sides of the base plate. .

[0018] According to the invention described in claim 5, For example, the head can be used to fix the cover more smoothly than with a tool with a square head, improving workability. can.

[0019] According to the invention described in claim 6, When the end of the cover material is pulled toward the front surface, a force is applied to the cover material toward the folded portion. Therefore, if the long side of the head of the hook portion is oriented perpendicular to the folded portion of the cover material, the cover material will not easily come off the hook portion. .

[0020] According to the invention described in claim 7, The end of the cover material can be secured with one hook at the location where one adjacent hole is located and the other adjacent hole is located, which contributes to reducing the number of parts. can.

[0021] According to the invention described in claim 8, If the temporary fastening hook portion of the base plate is passed through the temporary fastening hole in the terminal portion of the cover material and temporarily fastened, the portion of the terminal portion of the cover material that is to be fixed by the fixing material can be easily fixed by the fixing material. . [Brief description of the drawings]

[0022] [Figure 1] FIG. 2 is a perspective view showing the rear surface side of the vehicle seat in the first embodiment. [Diagram 2] FIG. 2 is a perspective view for explaining the vehicle seat of FIG. 1 in more detail. [Diagram 3]11A and 11B are diagrams showing a configuration of a hook portion. [Figure 4] 13 is a perspective view showing a state in which the hook portion is passed through a hole in the cover material. FIG. [Diagram 5] 13 is a diagram for explaining the orientation of the head of the hook portion. FIG. [Figure 6] 13A and 13B are diagrams for explaining modified examples of the hook portion. [Figure 7] FIG. 11 is a perspective view showing the rear surface side of a vehicle seat in a second embodiment. [Figure 8] FIG. 8 is a perspective view for explaining the vehicle seat of FIG. 7 in more detail. [Figure 9] 13 is a diagram for explaining a manner of fixing when terminal portions of the cover material overlap each other. FIG. [Figure 10] 13A and 13B are diagrams for explaining modified examples of the terminal portion of the cover material. [Figure 11] FIG. 11 is a perspective view showing the front surface side of a vehicle seat in a third embodiment. [Figure 12] FIG. 13 is a diagram for explaining the arrangement of a hook portion. [Figure 13] FIG. 11 is a perspective view showing the rear surface side of a vehicle seat in a fourth embodiment. [Figure 14] FIG. 13 is a perspective view showing the rear surface side of a vehicle seat in a fifth embodiment. [Figure 15] FIG. 15 is a perspective view for explaining the vehicle seat of FIG. 14 in more detail. [Figure 16] 13 is a diagram for explaining a manner in which a portion of an end portion of a cover material that is fixed by a fixing material is temporarily fastened to a base plate. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] Hereinafter, the embodiments of the present invention will be described with reference to the drawings. However, the embodiments described below are subject to various technically preferable limitations for carrying out the present invention, but the technical scope of the present invention is not limited to the following embodiments and illustrated examples.

[0024] Furthermore, the vehicle seat described below includes vehicle seats for ships, airplanes, snowmobiles, personal watercraft, etc., but mainly refers to a vehicle seat, and examples of vehicles include not only straddle-type or non-straddle-type motorcycles and automobiles (passenger cars), but also bicycles, mopeds, construction vehicles, military vehicles, industrial vehicles, railroad cars, and agricultural vehicles such as tillers and tractors. An occupant sits in the vehicle seat. In this embodiment, a vehicle seat for a straddle-type two-wheeled motor vehicle (so-called bike, motorbike, or motor cycle) will be described as an example.

[0025] The vehicle seat further includes a base plate fixed to the vehicle body, a cushioning material provided on and supported by an upper surface of the base plate, and a cover material that covers the base plate and the cushioning material. That is, the vehicle seat is configured such that the cushioning material is supported on the base plate and is covered with the cover material.

[0026] The base plate is a resin molded product made of a resin material such as polypropylene or polyvinyl chloride, molded into a shape corresponding to the body of the vehicle, and attached to the body. For this reason, the base plate is made particularly hard. In addition, metal fittings required for fixing the base plate to the body may be attached to the base plate, or metal may be inserted into the base plate during the manufacturing process.

[0027] The cushioning material is made of a flexible foam material, such as urethane foam, polypropylene foam, or polyethylene foam, and is softer than the base plate. In addition, since the cushion material is supported by the upper surface of the base plate, the lower surface of the cushion material has a shape that easily matches the shape of the upper surface of the base plate, making it easier for the cushion material to be stably supported by the upper surface of the base plate. Furthermore, the surfaces where the base plate and the cushioning material come into contact with each other, that is, the upper surface of the base plate and the lower surface of the cushioning material, are each set as a reference surface.

[0028] The cover material constitutes the seating surface of the vehicle seat and is the part that comes into contact with the occupant, and is made of a resin material, synthetic leather, cloth, genuine leather, or the like as appropriate. The end portion of the cover material is folded toward the back (lower surface) side of the base plate and fixed to the base plate. The end portion of the cover material refers to the entire peripheral edge of the cover material. Therefore, the end portion of the cover material is fixed to the entire peripheral edge of the base plate.

[0029] [First embodiment] Hereinafter, the vehicle seat S1 in the first embodiment will be described in detail with reference to FIGS. The vehicle seat S1 in this embodiment includes a base plate 10, a cushion material (not shown), and a cover material 20.

[0030] The base plate 10 is also called a bottom plate or a cushion support member, and since it is a resin molded product as described above, most of the parts are integrally formed, and accessories are attached as necessary. In other words, the base plate 10 is mainly composed of the main body plate 11, and the parts having each function are integrally formed with this main body plate 11.

[0031] The body plate 11 is formed so that the portion where the rider sits is lower than other portions in a side view. The vicinity of the portion formed to be lower than other portions in this way corresponds to the position of the rider's sitting bones when driving a motorcycle, and is the most heavily loaded portion of the seat where the rider's load (rider load) is greatest.

[0032] Such a body plate 11 has a flange portion 12 provided along the periphery of the body plate 11, and the flange portion 12 makes it possible to improve the rigidity of the periphery of the body plate 11.

[0033] The flange portion 12 is formed integrally with the periphery of the body plate 11 and refers to a portion that protrudes outward like a brim. Such flange portion 12 has a front portion 12a located on the leading edge side of the main body plate 11 and reinforcing the area near the leading edge, a rear portion 12b located on the trailing edge side of the main body plate 11 and reinforcing the area near the trailing edge, and left and right side portions 12c, 12d located on the left and right side edges of the main body plate and reinforcing the areas near the side edges, and is roughly divided into areas.

[0034] Furthermore, the flange portion 12 is formed so as to not only protrude outward from the body plate 11 but also extend obliquely downward. In the flange portion 12 having such a shape, the surface facing the vehicle body is referred to as the back surface, and the surface opposite the vehicle body is referred to as the front surface. The cushioning material is provided on the front surface as described above.

[0035] The base plate 10 includes a plurality of reinforcing portions 13, a plurality of load receiving portions 14, and a plurality of ribs 15 as portions integrally formed with the main body plate 11. The base plate 10 also includes a plurality of hook portions 16 formed integrally with the flange portion 12 and protruding from the rear surface of the flange portion 12 .

[0036] Each of the multiple reinforcing portions 13 is ridge-shaped extending in the front-to-rear direction, and includes a reinforcing portion 13 located at the center of the main body plate 11, and left and right reinforcing portions 13 located laterally away from the central reinforcing portion 13. Although not shown, the surface side of each reinforcing portion 13 is formed to be recessed with respect to the above-mentioned reference plane. Also, the surface side of each reinforcing portion 13 is provided with a reinforcing rib that spans between the side walls that constitute the reinforcing portion 13. And, a through hole for weight reduction may be formed at the position reinforced by the reinforcing rib.

[0037] The load receiving portions 14 are located between the base plate 10 and the vehicle body and receive the load of an occupant, and are disposed on the outer sides of the left and right reinforcing portions 13 in the left-right direction. The multiple load receiving portions 14 arranged on the left and right outer sides respectively include a load receiving portion 14 located on the front side, a load receiving portion 14 located on the central side, and a load receiving portion 14 located on the rear side, has.

[0038] Here, the load receiving portion 14 refers to the portion itself that is fixed to the vehicle body, as well as to an elastic member such as rubber that is attached to that portion and the portion to which the elastic member is attached. This elastic member is softer than the base plate 10, and is fixed to the lower surface of the base plate 10, for example, by welding. Alternatively, an insertion hole may be formed in the base plate 10, an insertion portion that can be inserted into the insertion hole may be formed in the elastic member of the load receiving portion 14, and the elastic member of the load receiving portion 14 may be fixed to the base plate 10 by inserting and fitting the insertion portion into the insertion hole.

[0039] Of the multiple load receiving portions 14, the load receiving portion 14 located on the central side is disposed near the maximum load portion of the main body plate 11. In other words, the maximum load portion is located between the load receiving portions 14 on the central side on the left and right sides of the base plate 10. Therefore, the load receiving portion 14 on the central side is more likely to receive the load of an occupant than the front and rear load receiving portions 14. The front load receiving portion 14 is located between the front portions of the side portions 12c, 12d of the flange portion 12 and the left and right reinforcing portions 13 and is formed integrally with the main body plate 11. The rear load receiving portion 14 is integrally formed with the main body plate 11 at the position of the rear portion 12 b of the flange portion 12 . Bolt holes are formed near the centers of the load receiving portions 14, and the base plate 10 can be fixed to the vehicle body by bolts inserted through the bolt holes.

[0040] Next, the multiple ribs 15 have a reinforcing shape for reinforcing the base plate 10, and are arranged extending in the left-right direction from the side walls of the multiple reinforcing parts 13. Furthermore, the multiple ribs 15 are arranged at intervals in the front-rear direction of the main body plate 11. More specifically, the multiple ribs 15 include those that are bridged between the side walls of the multiple reinforcing parts 13 and those that extend further laterally from the side walls of the left and right reinforcing parts 13. The multiple ribs 15 that are bridged between the side walls of the multiple reinforcing parts 13 and the multiple ribs 15 that extend further laterally from the side walls of the left and right reinforcing parts 13 are both spaced apart in the front-rear direction of the main body plate 11.

[0041] Next, the multiple hook portions 16 are adapted to be passed through holes 23 (described later) formed in the terminal portion 21 of the cover material 20 and hooked, and are formed in multiple portions on the front portion 12a and the rear portion 12b of the flange portion 12 of the base plate 10. Although the number is not particularly limited, in this embodiment, seven hooks are provided on the front portion 12a and eight hooks are provided on the rear portion 12b. Of the hooks 16 provided on the rear portion 12b, four hooks 16 are located between the rear load receiving portions 14, and two hooks are provided on each of the left and right outer sides of the rear load receiving portions 14.

[0042] 3(a), the hook portion 16 includes a shaft portion 16a protruding from the rear surface of the flange portion 12, and a head portion 16b located at the tip of the shaft portion 16a in the protruding direction. The head portion 16b has a tip portion 16c protruding beyond the side surface of the shaft portion 16a. More specifically, the head 16b of the hook portion 16 has a shape having a short side and a long side when viewed from the rear surface of the base plate 10. The length of the short side is set to be the same as the width of the side surface of the shaft portion 16a, and the length of the long side is set to be longer than the side surface of the shaft portion 16a. Therefore, the tip portion 16c in the longitudinal direction of the head portion 16b protrudes laterally beyond the side surface of the shaft portion 16a. Moreover, in the present embodiment, the head 16b has both longitudinal ends formed as tip portions 16c that protrude beyond the side surfaces of the shaft portion 16a. That is, the hook portion 16 is formed in a substantially T-shape in side view.

[0043] 3(b) and (c), the head 16b of the hook portion 16 has a curved upper surface, i.e., the head 16b is curved in both the short side direction and the long side direction. The lower surface of the tip portion 16c of the head portion 16b is not curved but is formed flat.

[0044] The portion of the base plate 10 where the hook portion 16 is provided can be made thinner because the hook portion 16 provides strength. That is, in this embodiment, the plate thickness of the front portion 12a and the rear portion 12b of the flange portion 12 in the base plate 10 can be made thinner. If the plate thickness can be made thinner even partially, this is preferable because it contributes to reducing the weight of the entire vehicle seat S1. In this embodiment, the plate thickness of the front portion 12a and the rear portion 12b of the flange portion 12 is set to, for example, 1.0 mm.

[0045] Next, the cover material 20 will be described. The cover material 20 includes a cushion material, a main body cover portion (not shown) that covers the front side of the base plate 10, and a terminal portion 21 that is folded onto the back side of the base plate 10.

[0046] In the cover material 20, a portion 22 that is bent from the front side to the back side of the base plate 10 (hereinafter, bent portion 22) is aligned along the edge of the base plate 10 as shown in FIG. In other words, the boundary between the cushioning material and the main body cover portion that covers the front side of the base plate 10, and the terminal portion 21 that is folded onto the back side of the base plate 10 is always in a folded state. The folded portion goes around the edge of the base plate 10 (the boundary between the front and back sides), so it follows the edge of the base plate 10. Such a portion is hereinafter referred to as the folded portion 22.

[0047] The terminal portion 21 is formed with holes 23 used for fixing to the base plate 10. The hook portions 16 protruding from the rear surface of the flange portion 12 of the base plate 10 are passed through the holes 23 and hooked onto the edge. Therefore, the number of holes 23 is set to be equal to or greater than the number of hook portions 16. In other words, the number of hook portions 16 is formed to be at least the number corresponding to the number of holes 23, and is not formed to be greater than the number of holes 23. The holes 23 are formed in the terminal portion 21 at locations corresponding to the front portion 12a and the rear portion 12b of the flange portion 12 of the base plate 10.

[0048] In this embodiment, the hole 23 may be formed in a round hole shape, or in an elongated hole shape or an elliptical hole shape to match the shape of the head 16b of the hook portion 16. Also, it may be formed in a rectangular hole shape to match the cross-sectional shape of the shaft portion 16a, and can be changed as appropriate. However, if the maximum diameter of the hole 23 is longer than the length of the long side of the head 16b of the hook portion 16, the hook portion 16 will easily come out of the hole 23, so it is preferable that the maximum diameter of the hole 23 is shorter than the length of the long side of the head 16b.

[0049] Although not shown, since the strength of the area around the hole 23 in the terminal portion 21 is low, a reinforcing portion is appropriately provided around the hole 23. Examples of the reinforcing portion include attaching a bead-shaped part, attaching a tape with high tear strength, and processing to create an uneven shape.

[0050] The end portion 21 of the cover material 20 as described above is hooked by passing the hook portion 16 through the hole 23, and the fixing material 25 is driven into the base plate 10 via the end portion 21. It is fixed to the base plate 10. That is, the terminal portion 21 of the cover material 20 is fixed to the base plate 10 by a first means of hooking the hook portion 16 through the hole 23 and a second means of the fixing material 25. When such fixing is performed, the hook portion 16 and the fixing material 25 are arranged so as not to overlap in the direction in which the end portion 21 of the cover material 20 is pulled.

[0051] In this embodiment, the fixing material 25 is a staple that is driven in using a tool such as a tacker. However, this is not limited to this, and other fixing materials such as nails and screws may be used, or an adhesive may be used in combination. The base plate 10 is thickened at portions where strength is required (in this embodiment, the left and right side portions 12c, 12d of the flange portion 12 of the base plate 10 against which the legs of the occupant come into contact). Such thick portions are suitable for driving in the fixing material 25. In this embodiment, the plate thickness of the left and right side portions 12c, 12d of the flange portion 12 is, for example, 2.0 mm, which is twice the plate thickness of the front portion 12a and the rear portion 12b.

[0052] Here, the direction in which the terminal portion 21 of the cover material 20 is pulled is the direction indicated by the arrow A in Figures 4 and 5. Explaining in more detail, when an occupant sits on the vehicle seat or when the center of gravity of the occupant moves, the cushion material deforms, and the terminal portion 21 is pulled toward the front surface of the vehicle seat as the cushion material deforms. That is, the main body cover portion of the cover material 20 that contacts the occupant is pushed toward the front surface of the base plate 10 as the cushion material deforms. At this time, the terminal portion 21 that has been bent at the bent portion 22 and wrapped around to the back surface of the base plate 10 is pulled toward the bent portion 22. The hook portion 16 and the fixing member 25 are arranged so as not to overlap in the direction in which they are pulled.

[0053] As described above, a plurality of hook portions 16 are formed on each of the front portion 12a and the rear portion 12b of the base plate 10. In other words, no hook portions 16 are formed on the left and right side portions 12c, 12d of the base plate 10. Therefore, in this embodiment, the terminal portion 21 of the cover material 20 is hooked to the hole 23 at the front portion 12a and rear portion 12b of the flange portion 12 on the base plate 10 by passing the hook portion 16 through the hole 23, and the fixing material 25 is driven into the base plate 10 via the terminal portion 21 at the left and right side portions 12c, 12d of the flange portion 12 on the base plate 10, thereby fixing the cover material to the base plate 10.

[0054] 4 and 5, the head 16b of the hook portion 16 is disposed so that the long side direction is perpendicular to the bent portion 22 of the cover material 20 when viewed from the back side of the base plate 10. In other words, the direction in which the terminal portion 21 of the cover material 20 is pulled (arrow A) and the long side direction of the hook portion 16 are aligned.

[0055] In this embodiment, the terminal portion 21 of the cover material 20 is fixed by the hook portions 16 at the front portion 12a and the rear portion 12b of the flange portion 12 of the base plate 10 and by the fixing members 25 at the left and right side portions 12c, 12d, but this is not limited to the above. That is, it is sufficient that the hook portions 16 and the fixing members 25 are arranged so as not to overlap in the direction in which the terminal portion 21 of the cover material 20 is pulled. For example, the hook portions 16 and the fixing members 25 may be arranged side by side in the circumferential direction of the terminal portion 21.

[0056] When manufacturing the vehicle seat S1 of this embodiment, the hook portion 16 of the flange portion 12 of the base plate 10 is passed through the hole 23 formed in the end portion 21 of the cover material 20. Then, the fixing material 25 is driven in. Of the multiple hook portions 16 provided on the front portion 12a of the flange portion 12, the hook portions 16 located at the left and right ends and the hook portions 16 provided on the rear portion 12b of the flange portion 12 that are located outside the load receiving portion 14 in the left-right direction are located on an extension line of the arrangement direction of the multiple fastening members 25 on the side portions 12c, 12d of the flange portion 12. Therefore, when manufacturing the vehicle seat S1, if the terminal portions 21 of the cover material 20 are hooked on the hook portions 16 on the outside in the left-right direction in the front portion 12a and the rear portion 12b, the terminal portions 21 of the cover material 20 are less likely to shift position, and the fastening members 25 can be easily driven in.

[0057] According to the above embodiment, the terminal portion 21 of the covering material 20 is formed with a hole 23 used for fixing to the base plate 10, and the base plate 10 has a hook portion 16 formed protruding from the back surface of the base plate 10 and passed through the hole 23 of the covering material 20 to be hooked, and the terminal portion 21 of the covering material 20 is in a state where the hook portion 16 is passed through the hole 23 and hooked, and the fixing material 25 is driven into the base plate 10 via the terminal portion 21 to be fixed to the base plate 10, and the hook portion 16 and the fixing material 25 are arranged so as not to overlap in the direction in which the terminal portion 21 of the covering material 20 is pulled, so that the hook portion 16 and the fixing material 25 are not arranged side by side in the direction in which the terminal portion 21 of the covering material 20 is pulled to the front surface side (arrow A). This makes it possible to secure the mounting space for both the hook portion 16 and the fixing material 25 while suppressing the increase in size of the structure in the direction in which the covering material 20 is pulled to the front surface side.

[0058] In addition, the hook portions 16 are formed in a plurality of portions at the front portion 12a and the rear portion 12b of the flange portion 12 of the base plate 10, and the terminal portions 21 of the cover material 20 are hooked by passing the hook portions 16 through the holes 23 at the front portion 12a and the rear portion 12b of the base plate 10, and the fixing members 25 are driven into the base plate 10 through the terminal portions 21 at the left and right side portions 12c and 12d of the base plate 10, so that the portion of the base plate 10 where the hook portions 16 are provided can gain strength by providing the hook portions 16. Accordingly, the plate thickness can be made thinner than the portion where the fixing members 25 are driven in. In other words, the plate thickness can be made thicker at the portion where strength is required, and the fixing members 25 are driven in to fix the cover material 20, and the plate thickness can be made thinner at the portion where strength is relatively not required, and the cover material 20 is fixed by the hook portions 16 to reduce weight. The left and right side portions 12c, 12d of the base plate 10 are the locations where the legs of an occupant come into contact when seated, and therefore the fixing members 25 are driven in, thereby improving the strength of the left and right side portions 12c, 12d of the base plate 10.

[0059] In addition, the head 16b of the hook portion 16, which is located at the tip of the hook portion 16 protruding from the rear surface of the base plate 10, has a curved shape, so that the work of fixing the cover material 20 can be performed more smoothly than if the head 16b had an angular shape, for example, thereby improving workability.

[0060] In addition, the terminal portion 21 of the cover material 20 is bent from the front side to the back side of the base plate 10 and fixed, and the bent portion 22, which is the portion of the cover material 20 bent from the front side to the back side of the base plate 10, is along the edge of the base plate 10, and the head portion 16b of the hook portion 16 located at the tip in the protruding direction from the back side of the base plate 10 has a shape having a short side and a long side when viewed from the back side of the base plate 10, and the head portion 16b is arranged so that the direction of the long side is perpendicular to the bent portion 22 of the cover material 20 when viewed from the back side of the base plate 10, so that the cover material 20 is less likely to come off the hook portion 16. That is, when the terminal portion 21 of the cover material 20 is pulled toward the front side, a force is applied to the cover material 20 toward the bent portion 22, so if the direction of the long side of the head portion 16b of the hook portion 16 is arranged so that it is perpendicular to the bent portion 22 of the cover material 20, the cover material 20 is less likely to come off the hook portion 16.

[0061] (Variation 1) In addition, the embodiments to which the present invention can be applied are not limited to the above-mentioned embodiment, and can be appropriately modified without departing from the spirit of the present invention, so a modified example will be described here. In this modified example, elements common to the above-mentioned embodiment are given the same reference numerals, and descriptions thereof will be omitted or simplified.

[0062] In the case of the hook portion 16 in the above embodiment, the tip portions 16c on both sides of the long side of the head 16b protrude from the side of the shaft portion 16a by the same length. However, in the case of the hook portion 16Ex in this modified example, one tip portion 16cEx is formed longer than the other tip portion 16c, as shown in Figures 6(a) and (b).

[0063] One tip portion 16cEx is positioned on the edge side (referring to the end portion opposite the folded portion 22) of the terminal portion 21 of the cover material 20, and the other tip portion 16c is positioned on the folded portion 22 side of the cover material 20.

[0064] According to this modified example, one tip 16cEx of the hook portion 16Ex is more likely to hook around the hole 23 in the terminal portion 21 of the cover material 20, thereby preventing the terminal portion 21 of the cover material 20 from coming off the hook portion 16Ex.

[0065] Second Embodiment A vehicle seat S2 in the second embodiment will be described in detail below with reference to Figures 7 to 9. Note that descriptions of elements common to the above-described embodiment will be omitted or simplified as appropriate. The vehicle seat S2 in this embodiment includes a base plate 30, a cushion material (not shown), and a cover material 40.

[0066] As described above, the base plate 30 in this embodiment is a resin molded product, so most of the parts are integrally formed, and accessories are attached as necessary. In other words, the base plate 30 is mainly composed of the main body plate 31, and the parts having each function are integrally formed with this main body plate 31.

[0067] Such a body plate 31 has a flange portion 32 provided along the periphery of the body plate 31, and the flange portion 32 makes it possible to improve the rigidity of the periphery of the body plate 31.

[0068] The flange portion 32 is formed integrally with the periphery of the main body plate 31 and refers to a portion that protrudes outward like a brim. The flange portion 32 has a front portion 32a, a rear portion 32b, and left and right side portions 32c, 32d, similarly to the flange portion 12 in the first embodiment, and is roughly divided into areas.

[0069] The base plate 30 includes a plurality of reinforcing portions 33, a plurality of load receiving portions 34, and a plurality of protruding portions 35 as portions integrally formed with the main body plate 31. The base plate 30 also includes a plurality of hook portions 36 formed integrally with the flange portion 32 and protruding from the rear surface of the flange portion 32 .

[0070] The reinforcing parts 33 are formed in the central area of ​​the back surface (lower surface) of the main plate 31 to reinforce the base plate 10. The reinforcing parts 33 are convex on the lower surface side. The surface of the part farthest from the cushioning material of each of the reinforcing parts 33 is The surface is curved and is formed in a circular shape when viewed from below. The surfaces of the protruding portions of these multiple reinforcing portions 33 are curved and formed in a circular shape, so that when viewed from above or below, they appear to be spheres or hemispheres.

[0071] The reinforcing parts 33 are formed in a recessed state on the front surface side of the body plate 11. That is, the reinforcing parts 33 are formed as recesses that do not penetrate downward when viewed from above. The recesses are formed in a dome shape when viewed from above.

[0072] The plurality of reinforcing portions 33 are arranged in a staggered manner when viewed from below. A portion between the plurality of reinforcing portions 33 forms a recessed portion 33a surrounded by the plurality of reinforcing portions 33.

[0073] Although not shown, a plurality of reinforcing parts having the same shape as the above-mentioned plurality of reinforcing parts 33 may also be formed in the central area of ​​the surface (upper surface) of the main body plate 31. In this case, the plurality of reinforcing parts 33 on the lower surface side and the plurality of reinforcing parts on the upper surface side are disposed at different positions when the base plate 30 is projected in the up-down direction. That is, the multiple reinforcing parts 33 on the lower surface side and the multiple reinforcing parts on the upper surface side are arranged in a positional relationship such that they are staggered both in the planar positional relationship and in the vertical positional relationship of the main body plate 11. More specifically, the multiple reinforcing parts 33 on the lower surface side are arranged in a staggered pattern as described above, and the multiple reinforcing parts on the upper surface side are arranged in a staggered pattern that avoids the staggered arrangement of the multiple reinforcing parts 33 on the lower surface side.

[0074] The multiple load receiving portions 34 are disposed on both the left and right outer sides of the main body plate 31. The multiple load receiving portions 34 include a load receiving portion 34a located on the front side and a load receiving portion 34b located on the rear side.

[0075] Next, the multiple protrusions 35 are portions that are fixed to the vehicle body, are disposed on the front side of the base plate 30, and protrude forward from the rear surface of the base plate 30. Moreover, these multiple protrusions 35 are disposed adjacent to the inside in the left-right direction of the front load receiving portions 34 provided on both left-right sides of the base plate 30 .

[0076] Next, the multiple hook portions 36 are adapted to be passed through holes 43 (described later) formed in the terminal portion 41 of the cover material 40 and hooked, and are formed in multiple portions on the front portion 32a and the rear portion 32b of the flange portion 32 of the base plate 30. The configuration of the hook portion 36 in this embodiment is similar to that of the hook portion 16 in the first embodiment described above, and therefore a description thereof will be omitted.

[0077] Next, the cover material 40 will be described. The cover material 40 includes a cushion material and a main body cover portion (not shown) that covers the front side of the base plate 30, and a terminal portion 41 that is folded onto the back side of the base plate 30.

[0078] In the cover material 40 , a portion 42 that is bent from the front side to the back side of the base plate 30 (hereinafter, bent portion 42 ) is aligned along the edge of the base plate 30 . The terminal portion 41 is formed with a hole 43 (see FIG. 10) used for fixing to the base plate 30. The hook portion 36 protruding from the back surface of the flange portion 32 of the base plate 30 is passed through the hole 43 and hooked onto the edge. The holes 43 are formed in the terminal portion 41 at locations corresponding to the front portion 32 a and the rear portion 32 b of the flange portion 32 of the base plate 30 .

[0079] The terminal portion 41 of the covering material 40 as described above is hooked by passing the hook portion 36 through the hole 43, and the fixing material 45 is driven into the base plate 30 via the terminal portion 41, so that the terminal portion 41 of the covering material 40 is fixed to the base plate 30. That is, the terminal portion 41 of the covering material 40 is fixed to the base plate 30 by a first means of hooking the hook portion 36 through the hole 43, and a second means of the fixing material 45. When such fixing is performed, the hook portion 36 and the fixing material 45 are arranged so as not to overlap in the direction in which the end portion 41 of the cover material 40 is pulled. In this embodiment, the fixing material 45 is a staple that is driven in by a tool such as a stapler.

[0080] As described above, a plurality of hook portions 36 are formed on each of the front portion 32a and the rear portion 32b of the base plate 30. In other words, no hook portions 36 are formed on the left and right side portions 32c, 32d of the base plate 30. Therefore, in this embodiment, the terminal portion 41 of the cover material 40 is hooked to the hole 43 at the front portion 32a and rear portion 32b of the flange portion 32 of the base plate 30 by passing the hook portion 36 through the hole 43, and the fixing material 45 is driven into the base plate 30 via the terminal portion 41 at the left and right side portions 32c, 32d of the flange portion 32 of the base plate 30, thereby fixing the cover material 40 to the base plate 30.

[0081] When manufacturing the vehicle seat S2 of this embodiment, the hook portions 36 of the flange portions 32 of the base plate 30 are passed through the holes 43 formed in the terminal portions 41 of the cover material 40, and then the fastening members 45 are driven in. Of the multiple hook portions 36 provided on the front portion 32a of the flange portion 32, the hook portions 36 located at the left and right ends and the hook portions 36 provided on the rear portion 32b of the flange portion 32 that are located outside the load receiving portion 34 in the left-right direction are disposed closer to the side portions 32c, 32d of the flange portion 32. Therefore, when manufacturing the vehicle seat S2, if the terminal portions 41 of the cover material 40 are hooked on the hook portions 36 on the outside in the left-right direction in the front portion 32a and the rear portion 32b, the terminal portions 41 of the cover material 40 are less likely to shift position, and the work of driving in the fixing materials 45 can be easily performed.

[0082] According to the above embodiment, the terminal portion 41 of the covering material 40 is formed with a hole 43 used for fixing to the base plate 30, and the base plate 30 has a hook portion 36 formed protruding from the back surface of the base plate 30 and passed through the hole 43 of the covering material 40 to be hooked, and the terminal portion 41 of the covering material 40 is in a state where the hook portion 36 is passed through the hole 43 and hooked, and the fixing material 45 is driven into the base plate 30 via the terminal portion 41 to be fixed to the base plate 30, and the hook portion 36 and the fixing material 45 are arranged so as not to overlap in the direction in which the terminal portion 41 of the covering material 40 is pulled, so that the hook portion 36 and the fixing material 45 are not arranged side by side in the direction in which the terminal portion 41 of the covering material 40 is pulled toward the front surface. This makes it possible to secure mounting space for both the hook portion 36 and the fixing material 45 while suppressing the increase in size of the structure in the direction in which the covering material 40 is pulled toward the front surface.

[0083] (Variation 2) In addition, the embodiments to which the present invention can be applied are not limited to the above-mentioned embodiment, and can be appropriately modified without departing from the spirit of the present invention, so a modified example will be described here. In this modified example, elements common to the above-mentioned embodiment are given the same reference numerals, and descriptions thereof will be omitted or simplified.

[0084] In this modification, as shown in FIG. 9, adjacent terminal portions 41 of the cover material 40 are A portion 41a where one hole 43 is located and a portion 41b where the other adjacent hole 43 is located are overlapped. One hook portion 36 of the base plate 30 is passed through and hooked onto both the one hole 43 and the other hole 43.

[0085] To explain in more detail, first, the base plate 30 has a three-dimensional shape, and the corners may be rounded. Therefore, when manufacturing the cover material 40, multiple sheets of material are often sewn together to match the shape of the base plate 30. However, when the main body cover portion is formed to match the shape of the base plate 30 in this way, there are cases where the material is left over at the end portion 41 and cannot be folded properly onto the back side of the flange portion 32. To prevent this, the material on one side and the material on the other side that were sewn together at the main body cover portion are not sewn together at the end portion 41, and are instead overlapped and stored on the back side of the flange portion 32. In such a case, the portion 41a where one adjacent hole 43 is located and the portion 41b where the other adjacent hole 43 is located are overlapped, and the two holes 43 are hooked onto one hook portion 36 to fix the two holes 43 in place.

[0086] According to this modified example, the portion 41a of the terminal portion 41 of the cover material 40 where one adjacent hole 43 is located and the portion 41b where the other adjacent hole 43 is located can be fixed by a single hook portion 36, thereby contributing to a reduction in the number of parts. Furthermore, since the material can be adjusted (balanced out) at the terminal portion 41 in this manner, the main body cover portion can be manufactured to correspond to the complex shape of the base plate 30.

[0087] (Variation 3) The flange portion 32 of the base plate 30 is not linear, but has a three-dimensional shape with irregularities and roundness. Therefore, if the stretchability of the terminal portion 41 of the cover material 40 is low, when the cover material 40 is hooked onto the hook portion 36, for example, the sewing line between the main body cover portion and the terminal portion 41, which is normally folded and hidden by the back side of the flange portion 32, may appear to be floating, or wrinkles or twists may occur in the main body cover portion. Furthermore, by forcibly hooking onto the hook portion 36, the hole 43 of the terminal portion 41 may widen sideways or become misaligned. In order to eliminate such a problem, a plurality of slits 44 are formed in the end portion 41 of the cover material 40 in this modified example, as shown in FIG.

[0088] The slit 44 is formed extending from an edge (referring to an end portion located opposite the bent portion 42) of the terminal portion 41 toward the bent portion 42. The end of the slit 44 on the bent portion 42 side is a round hole 44a whose diameter is set to be longer than the slit width. Moreover, the slit 44 is formed in the center between the plurality of holes 43. In other words, the plurality of holes 43 and the slits 44 are arranged at equal intervals. The round hole 44a can suppress the occurrence of twisting when the distance between a portion of the terminal portion 41 located on one side of the slit 44 and a portion located on the other side is reduced.

[0089] By forming the slit 44 in the terminal portion 41 in this manner, it becomes possible to easily widen or narrow the distance between a portion of the terminal portion 41 located on one side of the slit 44 and a portion located on the other side. Therefore, even if a position error occurs between adjacent hook portions 36 when the terminal portion 41 of the cover material 40 is hooked and fixed to the hook portion 36, the position of the hole 43 can be adjusted by widening or narrowing the slit 44, so that, for example, it is not necessary to forcibly hook the terminal portion 41 of the cover material 40 to the hook portion 36. This prevents the sewing lines from floating or becoming visible, and prevents wrinkles or twists in the main cover. Furthermore, the expansion and positional deviation of the hole 43 in the terminal portion 41 can be suppressed and optimized.

[0090] Third Embodiment Hereinafter, a vehicle seat S3 in the third embodiment will be described in detail with reference to Figures 11 and 12. Note that the description of elements common to the above-mentioned embodiments will be omitted or simplified as appropriate. The vehicle seat S3 in this embodiment includes a base plate 50, a cushion material (not shown), and a cover material (not shown).

[0091] Most of the parts of the base plate 50 are integrally formed, and accessories are attached as necessary. In other words, the base plate 50 is mainly composed of the main body plate 51, and the parts having each function are integrally formed with this main body plate 51.

[0092] Such a body plate 51 has a flange portion 52 provided along the periphery of the body plate 51, and the flange portion 52 makes it possible to improve the rigidity of the periphery of the body plate 51.

[0093] The flange portion 52 is formed integrally with the periphery of the body plate 51 and refers to a portion that protrudes outward like a brim. The flange portion 52 has a front portion 52a, a rear portion 52b, and left and right side portions 52c, 52d, similarly to the flange portion 12 in the first embodiment, and is roughly divided into areas.

[0094] The base plate 50 includes a plurality of reinforcing portions 53, a plurality of load receiving portions 54, and a plurality of protruding portions 55 as portions integrally formed with the main body plate 51. The base plate 50 also includes a plurality of hook portions 56 formed integrally with the flange portion 52 and protruding from the rear surface of the flange portion 52 .

[0095] The multiple reinforcing portions 53 are each ridge-shaped and extend in the front-rear direction, and a pair are disposed in the center of the main body plate 51 . The portions located on both the left and right sides of the pair of reinforcing parts 53 are formed in a recessed state. In other words, the pair of reinforcing parts 53 and the recesses on both sides form an uneven shape in the main body plate 51, thereby improving the overall rigidity. In addition, a plurality of ribs 53a are formed at intervals in the front-rear direction on the side walls constituting the pair of reinforcing parts 53.

[0096] The multiple load receiving portions 54 are disposed on both the left and right outer sides of the main body plate 51. The multiple load receiving portions 54 include a load receiving portion 54a located on the front side and a load receiving portion 54b located on the rear side.

[0097] Next, the multiple protrusions 55 are portions that are fixed to the vehicle body, are disposed on the front side of the base plate 50, and protrude forward from the rear surface of the base plate 50.

[0098] Next, the multiple hook portions 56 are adapted to be passed through holes formed in the terminal portion of the cover material and hooked onto it, and are formed in multiple portions on the front portion 52a and the rear portion 52b of the flange portion 52 of the base plate 50. The configuration of the hook portion 56 in this embodiment is similar to that of the hook portion 16 in the first embodiment described above, and therefore a description thereof will be omitted.

[0099] In the base plate 50 as described above, a plurality of through holes 50a are formed penetrating the base plate 50 in the thickness direction. The plurality of through holes 50a are mainly formed in the main body plate 51, but are also partially formed in the flange portion 52. In this manner, forming multiple through holes 50a in the base plate 50 not only contributes to reducing the overall weight of the vehicle seat S3, but also improves drainage and breathability, in particular allowing air to escape from the cushioning material to dissipate heat.

[0100] In this embodiment, the hook portions 56 and the plurality of through holes 50a are arranged so as not to overlap with each other in the front-rear direction of the base plate 50, as shown in FIG. In this embodiment, a plurality of hook portions 56 are provided, and a large number of through holes 50a are also formed. Therefore, it is not necessary that all of the hook portions 16 and all of the through holes 50a are disposed in such a positional relationship, and a partial positional relationship may be acceptable.

[0101] The configuration of the cover material (not shown) is similar to that of the cover material 20 in the first embodiment described above, and therefore a description thereof will be omitted. The terminal portion of such a cover material is hooked by passing the hook portion 56 through the hole, and a fixing material (not shown) is driven into the base plate 50 via the terminal portion, so that the terminal portion of the cover material is fixed to the base plate 50. That is, the terminal portion of the cover material is fixed to the base plate 50 by the first means of passing the hook portion 56 through the hole and hooking it, and the second means of the fixing material. When such fastening is performed, the hook portion 56 and the fastening material are arranged so as not to overlap in the direction in which the end portion of the cover material is pulled.

[0102] According to the above embodiment, a hole used for fixing to the base plate 50 is formed in the terminal portion of the covering material, and the base plate 50 has a hook portion 56 formed protruding from the back surface of the base plate 50 and passed through the hole of the covering material to be hooked, and the terminal portion of the covering material is in a state where the hook portion 56 is passed through the hole and hooked, and the fixing material is driven into the base plate 50 via the terminal portion, and is fixed to the base plate 50, and the hook portion 56 and the fixing material are arranged so as not to overlap in the direction in which the terminal portion of the covering material is pulled, so that the hook portion 56 and the fixing material are not arranged side by side in the direction in which the terminal portion of the covering material is pulled toward the front surface. This makes it possible to secure the installation space for both the hook portion 56 and the fixing material while suppressing the increase in size of the structure in the direction in which the covering material is pulled toward the front surface.

[0103] In addition, the base plate 50 is formed with a plurality of through holes 50a that penetrate the base plate 50 in the thickness direction. By forming a plurality of through holes in the base plate, not only can the weight of the entire vehicle seat S3 be reduced, but drainage and breathability can be improved. In particular, by allowing air to escape from the cushioning material and dissipating heat, discomfort when sitting can be reduced.

[0104] Furthermore, since the hook portions 56 and the multiple through holes 50a are arranged so as not to overlap in the front-rear direction of the base plate 50, the hook portions 56 can be arranged in a position with relatively high strength. This makes it possible to maintain a good fixed state of the cover material compared to, for example, a case in which the cover material is fixed by hooking it onto the hook portions 56 arranged so as to overlap the through holes 50a in the front-rear direction.

[0105] [Fourth embodiment] Hereinafter, a vehicle seat S4 in the fourth embodiment will be described in detail with reference to Fig. 13. Note that the description of elements common to the above-mentioned embodiments will be omitted or simplified as appropriate. The vehicle seat S4 in this embodiment includes a base plate 60 and a cushion material (not shown). The device is provided with a cover material 70.

[0106] Most of the parts of the base plate 60 are integrally formed, and accessories are attached as necessary. In other words, the base plate 60 is mainly composed of the main body plate 61, and the parts having each function are integrally formed with this main body plate 61.

[0107] Such a body plate 61 has a flange portion 62 provided along the periphery of the body plate 61, and the flange portion 62 makes it possible to improve the rigidity of the periphery of the body plate 61.

[0108] The flange portion 62 is formed integrally with the periphery of the body plate 51 and refers to a portion that protrudes outward like a brim. The flange portion 62, like the flange portion 12 in the first embodiment, has a front portion (not shown), a rear portion 62b, and left and right side portions 62c, 62d, and is roughly divided into areas.

[0109] The base plate 60 includes a plurality of reinforcing portions 63, a plurality of load receiving portions 64, and a plurality of protruding portions 65 as portions that are integrally formed with the main body plate 61. The base plate 60 also includes a plurality of hooks 66 formed integrally with the flange portion 62 and protruding from the rear surface of the flange portion 62 .

[0110] Each of the multiple reinforcing portions 63 is ridge-shaped extending in the front-to-rear direction, and includes a reinforcing portion 63 located at the center of the main body plate 61, and left and right reinforcing portions 63 located laterally away from the central reinforcing portion 63. Further, reinforcing ribs 63a configured in a lattice pattern are integrally formed between the multiple reinforcing portions 63 and on the outer sides of the left and right reinforcing portions 63 in the left and right direction.

[0111] The load receiving portions 64 are disposed on both the left and right outer sides of the main body plate 61 . The multiple protrusions 65 are fixed to the vehicle body, are disposed on the rear side of the base plate 60, and protrude rearward from the rear surface of the base plate 60.

[0112] The multiple hook portions 66 are intended to be passed through holes (not shown) formed in the terminal portion 71 of the cover material 70 and hooked onto it, and are formed in multiple portions on the front and rear portions 62b of the flange portion 62 of the base plate 60. The configuration of the hook portion 66 in this embodiment is similar to that of the hook portion 16 in the first embodiment described above, and therefore a description thereof will be omitted.

[0113] Next, the cover material 70 will be described. The cover material 70 includes a cushion material and a main body cover portion (not shown) that covers the front side of the base plate 60, and a terminal portion 71 that is folded onto the back side of the base plate 60.

[0114] In the cover material 70 , a portion 72 that is bent from the front side to the back side of the base plate 60 (hereinafter, bent portion 72 ) is aligned along the edge of the base plate 60 . The terminal portion 71 is formed with a hole (not shown) used for fixing to the base plate 60. The hook portion 66 protruding from the back surface of the flange portion 62 of the base plate 60 is passed through the hole and hooked onto the edge. The holes are formed in the terminal portion 71 at the front and rear portions of the flange portion 62 of the base plate 60. The recessed portions 62a and 62b are formed at positions corresponding to the rear portion 62b.

[0115] An end portion 71 of the cover material 70 has an elastic portion 71a that expands and contracts at least in a direction in which the end portion 71 is pulled (see arrow A in FIG. 5) and in the opposite direction. The stretchable portion 71a is made of a flat sheet-like stretchable material such as mesh rubber, invel rubber, or a stretch material. The stretchable portion 71a is provided at a portion of the terminal portion 71 of the covering material 70 that is fixed by the fixing material 75, and is not provided at a portion on which the hook portion 66 is hooked. In other words, the portion of the terminal portion 71 of the covering material 70 that has a hole on which the hook portion 66 is hooked is made of the same material as the main body cover portion, and the portion that is fixed by the fixing material 75 is made of the above-mentioned stretchable flat sheet-like material.

[0116] The terminal portion 71 of the covering material 70 as described above is hooked by passing the hook portion 66 through the hole, and the fixing material 75 is driven into the base plate 60 via the expandable portion 71a of the terminal portion 71, so that the terminal portion 71 of the covering material 70 is fixed to the base plate 60. That is, the terminal portion 71 of the covering material 70 is fixed to the base plate 60 by a first means of hooking the hook portion 66 through the hole, and a second means of the fixing material 75. When such fixing is performed, the hook portion 66 and the fixing material 75 are arranged so as not to overlap in the direction in which the terminal portion 71 of the cover material 70 is pulled. In this embodiment, the fixing material 75 is a staple that is driven in by a tool such as a stapler.

[0117] As described above, a plurality of hook portions 66 are formed on each of the front and rear portions 62b of the base plate 60. In other words, no hook portions 66 are formed on the left and right side portions 62c, 62d of the base plate 60. Therefore, in this embodiment, the terminal portion 71 of the cover material 70 is hooked to the front and rear portions 62b of the flange portion 62 of the base plate 60 by passing the hook portion 66 through holes, and the fixing material 75 is driven into the base plate 60 via the expandable portion 71a of the terminal portion 71 at the left and right side portions 62c, 62d of the flange portion 62 of the base plate 60, thereby fixing the terminal portion 71 to the base plate 60.

[0118] According to the above embodiment, the terminal portion 71 of the covering material 70 has a hole used for fixing to the base plate 60, and the base plate 60 has a hook portion 66 formed protruding from the back surface of the base plate 60 and passed through the hole of the covering material 70 to be hooked, and the terminal portion 71 of the covering material 70 is in a state where the hook portion 66 is passed through the hole and hooked, and the fixing material 75 is driven into the base plate 60 via the terminal portion 71 to be fixed to the base plate 60, and the hook portion 66 and the fixing material 75 are arranged so as not to overlap in the direction in which the terminal portion 71 of the covering material 70 is pulled, so that the hook portion 66 and the fixing material 75 are not arranged side by side in the direction in which the terminal portion 71 of the covering material 70 is pulled toward the front surface. This makes it possible to secure mounting space for both the hook portion 66 and the fixing material 75 while suppressing the increase in size of the structure in the direction in which the covering material 70 is pulled toward the front surface.

[0119] In addition, terminal portion 71 of cover material 70 has an elastic portion 71a that elastically expands and contracts at least in the direction in which terminal portion 71 is pulled and in the opposite direction, and elastic portion 71a is provided at a portion of terminal portion 71 of cover material 70 that is fixed by fixing material 75, making it easy to fix using fixing material 75. Furthermore, since the stretchable portion 71a is not provided at a portion where the hook portion 66 is to be hooked, the hook portion 66 is to be hooked at a portion of the terminal portion 71 of the cover material 70 where the stretchable portion 71a is not provided. This makes it easier to prevent the cover material 70 from falling off. Furthermore, not providing the stretchable portion 71a leads to cost reduction.

[0120] Fifth embodiment Hereinafter, a vehicle seat S5 in the fifth embodiment will be described in detail with reference to Figures 14 and 15. Note that the description of elements common to the above-mentioned embodiments will be omitted or simplified as appropriate. The vehicle seat S5 in this embodiment includes a base plate 80, a cushion material (not shown), and a cover material 90.

[0121] The base plate 80 is also called a bottom plate or a cushion support member, and since it is a resin molded product as described above, most of the parts are integrally formed, and accessories are attached as necessary. In other words, the base plate 80 is mainly composed of a main body plate 81, and the parts having each function are integrally formed with this main body plate 81.

[0122] Such a body plate 81 has a flange portion 82 provided along the periphery of the body plate 81, and the flange portion 82 makes it possible to improve the rigidity of the periphery of the body plate 81. The flange portion 82 has a front portion 82a, a rear portion 82b, and left and right side portions 82c, 82d, similarly to the flange portion 12 in the first embodiment, and is roughly divided into areas.

[0123] The base plate 80 includes a plurality of reinforcing portions 83, a plurality of load receiving portions 84, and a protruding portion 85 as portions that are integrally formed with the main body plate 81. The base plate 80 also includes a plurality of hooks 86 formed integrally with the flange portion 82 and protruding from the rear surface of the flange portion 82 .

[0124] Each of the multiple reinforcing portions 83 is ridge-shaped extending in the front-to-rear direction, and includes three reinforcing portions 83 arranged at a distance from each other in the center of the main body plate 81, and left and right reinforcing portions 83 arranged laterally away from the three central reinforcing portions 83. Further, reinforcing ribs 83a are integrally formed between the three central reinforcing portions 83 and on the outer sides in the left and right direction of the left and right reinforcing portions 83.

[0125] The multiple load receiving portions 84 are arranged on both the left and right outer sides of the main body plate 81. The multiple load receiving portions 84 arranged on each of the left and right outer sides each have a load receiving portion 84 located on the front side, a load receiving portion 84 located on the central side, and a load receiving portion 84 located on the rear side. The multiple protrusions 85 are fixed to the vehicle body, are disposed on the front side of the base plate 80, and protrude forward from the rear surface of the base plate 80.

[0126] The multiple hook portions 86 are intended to be passed through holes (not shown) formed in the terminal portion 91 of the cover material 90 and hooked onto it, and are formed in multiple portions on the front portion 82a and rear portion 82b of the flange portion 82 of the base plate 80. The configuration of the hook portion 86 in this embodiment is similar to that of the hook portion 16 in the first embodiment described above, and therefore a description thereof will be omitted.

[0127] Next, the cover material 90 will be described. The cover material 90 includes a main body cover portion (not shown) that covers the cushion material and the front side of the base plate 80, and a terminal portion 91 that is folded onto the back side of the base plate 80. do.

[0128] In the cover material 90, a portion 92 that is bent from the front side to the back side of the base plate 80 (hereinafter, bent portion 92) is aligned along the edge of the base plate 80. The terminal portion 91 is formed with a hole (not shown) used for fixing to the base plate 80. The above-mentioned hook portion 86 protruding from the back surface of the flange portion 82 of the base plate 80 is passed through the hole and hooked onto the edge. The holes are formed in the terminal portion 91 at locations corresponding to the front portion 82a and the rear portion 82b of the flange portion 82 of the base plate 80.

[0129] The terminal portion 91 of the covering material 90 as described above is hooked by passing the hook portion 86 through the hole, and the fixing material 95 is driven into the base plate 80 via the terminal portion 91, so that the terminal portion 91 of the covering material 90 is fixed to the base plate 80 by the first means of hooking the hook portion 86 through the hole, and the second means of the fixing material 95. When such fixing is performed, the hook portion 86 and the fixing material 95 are arranged so as not to overlap in the direction in which the end portion 91 of the cover material 90 is pulled. In this embodiment, the fixing members 95 are staples that are driven in using a tool such as a stapler.

[0130] As described above, a plurality of hook portions 86 are formed on each of the front portion 82a and the rear portion 82b of the base plate 80. In other words, no hook portions 86 are formed on the left and right side portions 82c, 82d of the base plate 80. Therefore, in this embodiment, the terminal portion 91 of the cover material 90 is hooked by passing the hook portion 86 through holes in the front portion 82a and rear portion 82b of the flange portion 82 of the base plate 80, and the fixing material 95 is driven into the base plate 80 via the terminal portion 91 at the left and right side portions 82c, 82d of the flange portion 82 of the base plate 80, thereby fixing the cover material to the base plate 80.

[0131] According to the above embodiment, a hole used for fixing to the base plate 80 is formed in the terminal portion 91 of the covering material 90, and the base plate 80 has a hook portion 86 formed protruding from the back surface of the base plate 80 and passed through the hole of the covering material 90 to be hooked, and the terminal portion 91 of the covering material 90 is in a state where the hook portion 86 is passed through the hole and hooked, and the fixing material 95 is driven into the base plate 80 via the terminal portion 91 to be fixed to the base plate 80, and the hook portion 86 and the fixing material 95 are arranged so as not to overlap in the direction in which the terminal portion 91 of the covering material 90 is pulled, so that the hook portion 86 and the fixing material 95 are not arranged side by side in the direction in which the terminal portion 91 of the covering material 90 is pulled toward the front surface. This makes it possible to secure mounting space for both the hook portion 86 and the fixing material 95 while suppressing the increase in size of the structure in the direction in which the covering material 90 is pulled toward the front surface.

[0132] (Variation 4) In addition, the embodiments to which the present invention can be applied are not limited to the above-mentioned embodiment, and can be appropriately modified without departing from the spirit of the present invention, so a modified example will be described here. In this modified example, elements common to the above-mentioned embodiment are given the same reference numerals, and descriptions thereof will be omitted or simplified.

[0133] As described above, the hook portions 86 in the above embodiment are not formed on the left and right side portions 82c, 82d of the base plate 80 into which the fixing material 95 is driven. In contrast, in this modified example, as shown in FIG. 16, the base into which the fixing material 95 is driven is A plurality of temporary fastening hook portions 87 are formed on the left and right side portions 82c, 82d of the base plate 80. The configuration of the plurality of temporary fastening hook portions 87 is similar to that of the plurality of hook portions 86 formed on the front portion 82a and the rear portion 82b of the base plate 80, and therefore a description thereof will be omitted.

[0134] Furthermore, in the portion of the terminal portion 91 of the cover material 90 that is fixed by the fixing material 95, a plurality of temporary fastening holes (not shown) are formed for temporary fastening to the base plate 80. The above-mentioned temporary fastening hook portions 87 are passed through these multiple temporary fastening holes and hooked onto the edge. Therefore, the number of temporary fastening holes is set to be the same as the number of temporary fastening hook portions 87. In other words, the number of temporary fastening hook portions 87 is formed on the left and right side portions 82c, 82d of the base plate 80 in a number corresponding to the number of temporary fastening holes of the cover material 90.

[0135] When fixing the portions of the terminal portion 91 of the cover material 90 corresponding to the left and right side portions 82c, 82d of the flange portion 82 of the base plate 80 with the fixing material 95, first, the temporary fastening hook portion 87 of the flange portion 12 of the base plate 10 is passed through the temporary fastening hole formed in the terminal portion 91 of the cover material 90, and then the fixing material 95 is driven in. When the temporary fastening hook portion 87 is passed through the temporary fastening hole formed in the terminal portion 91 of the covering material 90, the hook portions 86 of the front portion 12a and the rear portion 12b of the flange portion 82 of the base plate 80 are also passed through holes formed in the front and rear terminal portions 91 of the covering material 90 at the same time. This results in a state in which the entire periphery of the covering material 90 is fastened to the entire periphery of the base plate 80. Driving the fixing material 95 in this state makes the work easier.

[0136] The provisional fastening hook portion 87 and the fixing material 95 are arranged so as not to overlap in the direction in which the terminal portion 91 of the cover material 90 is pulled. That is, in this modified example, the provisional fastening hook portion 87 and the multiple fixing materials 95 are arranged so as not to overlap in the left-right direction of the base plate 80.

[0137] According to this modified example, temporary fastening holes (not shown) used for temporary fastening to the base plate 80 are formed in the portions of the terminal portion 91 of the covering material 90 that are fixed by the fixing material 95, and the base plate 80 has temporary fastening hook portions 87 that protrude from the back surface of the base plate 80 and are passed through the temporary fastening holes of the covering material 90, and are formed in a number corresponding to the number of the temporary fastening holes. Therefore, by temporarily fastening the temporary fastening hook portions 87 of the base plate 80 through the temporary fastening holes in the terminal portion 91 of the covering material 90, the portions of the terminal portion 91 of the covering material 90 that are fixed by the fixing material 95 can be easily fixed by the fixing material 95. [Explanation of symbols]

[0138] S1 Vehicle seat S2 Vehicle seat S3 Vehicle seat S4 Vehicle seat S5 Vehicle seat 10 Base plate 12 Flange 12a front 12b Rear 12c Side 12d Side 16 Hook part 16a Shaft 16b Head 16c Tip 20 Cover material 21 Terminal Unit 22 Bend section 23 holes 25 Fixing material

Claims

1. a base plate having a cushioning material provided on a surface thereof and supporting the cushioning material; A cover material that covers the cushion material and has an end portion fixed to the base plate; Equipped with A hole is formed in an end portion of the cover material to be used for fixing to the base plate, the base plate has a hook portion formed to protrude from a rear surface of the base plate and to be passed through the hole of the cover material for hooking; The base plate has a plurality of through holes formed therein, the through holes passing through the base plate in a thickness direction, The hook portion is passed through the hole to hook the terminal portion of the cover material, and a fixing material is driven into the base plate via the terminal portion, so that the cover material is fixed to the base plate. the hook portion and the fixing material are arranged so as not to overlap in a direction in which the terminal portion of the cover material is pulled, The vehicle seat, wherein the hook portion and the plurality of through holes are arranged so as not to overlap in the front-rear direction of the base plate.

2. A base plate having a cushioning material on its surface and supporting the cushioning material; A cover material that covers the cushion material and has an end portion fixed to the base plate; Equipped with A hole is formed in an end portion of the cover material to be used for fixing to the base plate, the base plate has a hook portion formed to protrude from a rear surface of the base plate and to be passed through the hole of the cover material for hooking; The terminal portion of the cover material is The terminal portion has an elastic portion that expands and contracts in at least one direction in which the terminal portion is pulled and in the opposite direction, The hook portion is passed through the hole and hooked, and a fixing material is driven into the base plate via the terminal portion, so that the fixing member is fixed to the base plate. the hook portion and the fixing material are arranged so as not to overlap in a direction in which the terminal portion of the cover material is pulled, A vehicle seat characterized in that the stretchable portion is provided at a portion of the terminal portion of the cover material that is fixed by the fixing material, and is not provided at a portion where the hook portion is hooked.

3. The base plate is formed with a plurality of through holes penetrating the base plate in a thickness direction, 3. The vehicle seat according to claim 2, wherein the hook portion and the plurality of through holes are arranged so as not to overlap with each other in the front-rear direction of the base plate.

4. The hook portion is formed in a plurality of portions on the front and rear of the base plate, A vehicle seat as described in any one of claims 1 to 3, characterized in that the terminal portions of the cover material are hooked by passing the hook portions through the holes at the front and rear of the base plate, and the fixing material is driven into the base plate via the terminal portions at the left and right sides of the base plate, thereby fixing the cover material to the base plate.

5. 5. The vehicle seat according to claim 1, wherein the hook portion has a head portion that is positioned at a tip end in a direction in which the hook portion protrudes from the rear surface of the base plate and has a curved shape.

6. The terminal portion of the cover material is bent from the front surface side to the back surface side of the base plate and fixed, and a bent portion, which is a portion of the cover material bent from the front surface side to the back surface side of the base plate, is along an edge portion of the base plate, The hook portion has a head portion located at a tip end in a direction protruding from the rear surface of the base plate, the head portion having a short side and a long side in a rear view of the base plate, The vehicle seat according to any one of claims 1 to 5, characterized in that the head portion is arranged such that the direction of the long side is perpendicular to the folded portion of the cover material when viewed from the back side of the base plate.

7. a portion of the terminal portion of the cover material in which one of the adjacent holes is located and a portion of the terminal portion of the cover material in which the other of the adjacent holes is located are overlapped with each other; 7. The vehicle seat according to claim 1, wherein one of the hook portions of the base plate is passed through and hooked onto both the one hole and the other hole.

8. A temporary fastening hole is formed in a portion of the terminal portion of the cover material that is fixed by the fixing material, the temporary fastening hole being used for temporary fastening to the base plate, The vehicle seat according to any one of claims 1 to 7, characterized in that the base plate has temporary fastening hook portions that protrude from the back surface of the base plate, pass through the temporary fastening holes of the cover material, and are formed in a number corresponding to the number of the temporary fastening holes.

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