Vehicle seat and manufacturing method of the same

Abstract

To provide a vehicle seat which achieves improvement of assemblability of a wire member to a seat frame.SOLUTION: A vehicle seat S includes a seat frame 1. The seat frame 1 has: a pair of side frames 10a disposed at side parts of the vehicle seat S; and a bridge frame 14 which bridges an area between the pair of side frames 10a. A wire member 30 is disposed between the pair of side frames 10a. The bridge frame 14 has a wire receiving part 15 which receives the wire member 30. The wire member 30 is hooked on the wire receiving part 15.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a vehicle seat and a method for manufacturing a vehicle seat, and more particularly to a vehicle seat provided with a wire member that connects a pressure-receiving member to a seat frame, and a method for manufacturing a vehicle seat. [Background technology]

[0002] Conventionally, vehicle seats equipped with a plate-shaped pressure-receiving member that receives the load of a seated occupant are known. The vehicle seat described in Patent Document 1 is equipped with a wire member that connects the pressure-receiving member to a seat back frame. The wire member is connected to the seat back frame by inserting an upper end portion into a support hole formed on the lower side of a bridge frame. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2018-144521 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the vehicle seat described in Patent Document 1, the end of the wire member needs to be inserted into a support hole formed in the bridge frame, so that the wire member is difficult to install in the seat frame.

[0005] The present invention has been made in consideration of the above problems, and has an object to provide a vehicle seat and a method for manufacturing a vehicle seat in which the ease of assembling a wire member to a seat frame is improved. [Means for solving the problem]

[0006] The above problem is solved by the vehicle seat of the present invention, which is a vehicle seat having a seat frame, the seat frame having a pair of side frames arranged on the sides of the vehicle seat and a bridging frame bridging the pair of side frames, a wire member being arranged between the pair of side frames, the bridging frame having a wire receiving portion that receives the wire member, and the wire member being hung on the wire receiving portion.

[0007] In the vehicle seat of the present invention configured as described above, the wire member is attached to the seat frame by being hooked onto the wire receiving portion, thereby improving the ease of attachment of the wire member to the seat frame.

[0008] In the above configuration, the wire member may be hooked and fastened to the wire receiving portion in a width direction of the vehicle seat. In the above configuration, since the wire member is hooked on the wire receiving portion in the seat width direction, the wire member can be easily assembled to the seat frame.

[0009] In the above configuration, an end portion of the wire member in a width direction of the vehicle seat may be bent outwardly and inserted into an end receiving portion provided on the bridging frame. In the above arrangement, the ends of the wire members are held in place.

[0010] In addition, in the above configuration, the wire receiving portion has a first portion close to the occupant support surface and a second portion far from the occupant support surface, and the first portion is formed shorter than the second portion in the width direction of the vehicle seat. In the above configuration, when the wire member is attached to the seat frame, the first portion does not become an obstacle, and the wire member can be hooked to the wire receiving portion by abutting against the second portion and sliding it.

[0011] In the above configuration, the wire receiving portion may be curved in a direction toward an occupant support surface. In the above configuration, it is possible to guide the wire member to the wire receiving portion.

[0012] In the above configuration, it is preferable that a planar pressure-receiving member is attached to the wire member. In the above configuration, it was previously necessary to insert the end of the wire member molded integrally with the planar pressure-receiving member into a support hole formed in the bridging frame, but it is now possible to make the wire member separate from the planar pressure-receiving member and attach the pressure-receiving member to the wire member at any time before or after it is hung on the wire receiving portion.

[0013] In addition, in the above configuration, the wire members are arranged at a distance from each other in the width direction of the vehicle seat, and the distance between the wire members arranged at a distance from each other in the width direction of the vehicle seat becomes wider as they approach the bridging frame. In the above-described configuration, the position of the pressure-receiving member with respect to the wire member is regulated.

[0014] In addition, in the above configuration, the pressure-receiving member may have an engagement portion on the opposite side to the occupant support surface for fixing it to the wire member, and the engagement portion may have an inclined portion inclined outward in the width direction of the vehicle seat. In the above-described configuration, the wire member is fixed so as to be guided by the engaging portion of the pressure-receiving member, so that the ease of assembling the pressure-receiving member to the wire member is improved.

[0015] The above problem is solved by the method for manufacturing a vehicle seat of the present invention, which comprises the steps of: preparing a seat frame having a pair of side frames arranged on the sides of the vehicle seat and a bridging frame bridging the pair of side frames; hanging a wire member on a wire receiving portion of the bridging frame; and attaching an upholstery material and a padding member to the seat frame. In the manufacturing method for a vehicle seat of the present invention as described above, the wire member is assembled to the seat frame by being hooked onto the wire receiving portion in the seat width direction, thereby improving the ease of assembly of the wire member to the seat frame.

[0016] In the above configuration, the wire member may move from an inner side to an outer side in a width direction of the vehicle seat and be hooked onto the wire receiving portion. In the above configuration, the wire member can be easily assembled to the seat frame. Effect of the Invention

[0017] According to the vehicle seat of the present invention, the wire member is assembled to the seat frame by being hooked onto the wire receiving portion, and therefore the ease of assembly of the wire member to the seat frame is improved. Furthermore, according to the vehicle seat of the present invention, since the wire member is hooked and fastened to the wire receiving portion in the seat width direction, the wire member can be easily assembled to the seat frame. Furthermore, according to the vehicle seat of the present invention, the end of the wire member is held in an appropriate position. Furthermore, according to the vehicle seat of the present invention, when assembling the wire member to the seat frame, the first portion does not become an obstacle, and the wire member can be abutted against the second portion and slid to be hooked onto the wire receiving portion. Furthermore, according to the vehicle seat of the present invention, it is possible to guide the wire member to the wire receiving portion. In addition, according to the vehicle seat of the present invention, whereas in the past it was necessary to insert the end of the wire member molded integrally with the planar pressure-receiving member into a support hole formed in the bridging frame, it is now possible to make the wire member separate from the planar pressure-receiving member, and attach the pressure-receiving member to the wire member either before or after it is hung on the wire receiving portion. Furthermore, according to the vehicle seat of the present invention, the position of the pressure-receiving member with respect to the wire member is regulated. Furthermore, according to the vehicle seat of the present invention, the wire member is fixed so as to be guided by the engaging portion of the pressure-receiving member, which improves the ease of assembling the pressure-receiving member to the wire member. Furthermore, according to the vehicle seat of the present invention, the wire member is attached to the seat frame by being hooked onto the wire receiving portion in the seat width direction, improving the ease of attachment of the wire member to the seat frame. Furthermore, according to the vehicle seat of the present invention, the wire member can be easily assembled to the seat frame. [Brief description of the drawings]

[0018] [Figure 1] 1 is an external view of a vehicle seat according to an embodiment of the present invention; [Diagram 2] 1 is a perspective view of a seat frame included in a vehicle seat according to an embodiment of the present invention; [Diagram 3] 1 is a front view of a seat back frame included in a vehicle seat according to an embodiment of the present invention; [Figure 4] 4 is an enlarged view of the vicinity of a wire receiving portion of the bridge frame. FIG. [Diagram 5] 5 is an enlarged view illustrating an engagement portion of the pressure-receiving member. FIG. [Figure 6] FIG. 2 is a flow diagram of a method for manufacturing a vehicle seat according to an embodiment of the present invention. [Figure 7] 5A to 5C are schematic diagrams showing states before and after the wire member is engaged with the wire receiving portion. [Figure 8] 13 is a schematic diagram showing a state in the middle of engaging the wire member with the wire receiving portion; FIG. [Figure 9] FIG. 13 is a diagram showing a modified example (part 1) of the bridging frame. [Figure 10] FIG. 13 is a diagram showing a modified example (part 2) of the bridging frame. [Figure 11] FIG. 13 is a diagram showing a modified example (part 3) of the bridging frame. [Figure 12] FIG. 13 is a diagram showing a fourth modified example of the bridging frame. [Figure 13]FIG. 11 is a perspective view of a seat frame according to a first modified example. [Figure 14] FIG. 11 is a front view of a seat frame according to a first modified example. [Figure 15] FIG. 11 is a perspective view of a seat frame according to a second modified example. [Figure 16] FIG. 13 is a front view of a seat frame according to a third modified example. [Figure 17] FIG. 13 is a front view of a seat frame according to a fourth modified example. [Figure 18] FIG. 13 is a perspective view of a seat frame according to a fourth modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] A vehicle seat and a method for manufacturing a vehicle seat according to an embodiment of the present invention (hereinafter, the present embodiment) will be described below with reference to Fig. 1 to Fig. 18. As the vehicle seat according to the present embodiment, a vehicle seat mounted on a vehicle will be described as an example, but the vehicle seat is not limited to a vehicle seat mounted on a ground-traveling vehicle having wheels such as an automobile or a train, and may be a seat mounted on an aircraft, a ship, or the like that moves other than on the ground.

[0020] The embodiment described below is merely an example for facilitating understanding of the present invention, and is not intended to limit the present invention. In other words, the shapes, dimensions, arrangements, and other aspects of the components described below may be modified or improved without departing from the spirit of the present invention, and the present invention naturally includes equivalents thereof.

[0021] In this specification, the terms indicating directions are defined as shown in FIG. 1. Specifically, in the following description, the "front-rear direction" means the front-rear direction as seen by a person sitting in the vehicle seat, and is the direction that coincides with the vehicle's traveling direction. The "seat width direction" means the width direction of the vehicle seat, and coincides with the left-right direction as seen by a person sitting in the vehicle seat. Additionally, the "up-down direction" means the height direction of the vehicle seat, and coincides with the up-down direction as seen by the vehicle seat from the front.

[0022] [1. Main components of vehicle seat S] The vehicle seat S according to this embodiment has the appearance shown in Fig. 1. In Fig. 1, a part of the vehicle seat S (specifically, a part of the seat back S1 and a front corner of the seat cushion S2) is shown with the cover material T removed for convenience of illustration.

[0023] The vehicle seat S has as its main components a seat back S1 which serves as the backrest supporting the back of the seated occupant (passenger), a seat cushion S2 which serves as the seating portion supporting the buttocks and thighs of the occupant, and a headrest S3 which is disposed on top of the seat back S1 and supports the head of the occupant.

[0024] The seat back S1 is constructed by placing a pad member P on a seat back frame 10, which serves as a skeleton, and covering it with a skin material T. The seat cushion S2 is constructed by placing a pad member P on a seat cushion frame 20 and covering it with a skin material T. The headrest S3 is formed by disposing a pad member (not shown) on a core material (not shown) and covering it with a skin material T.

[0025] [2. Overview of seat frame 1] First, an outline of the configuration of the seat frame 1 will be described with reference to Figures 2 and 3. As shown in Figure 2, the seat frame 1 is mainly composed of a seat back frame 10 and a seat cushion frame 20. The seat back frame 10 forms the framework of the backrest portion of the seat frame 1, and the seat cushion frame 20 forms the framework of the sitting portion of the seat frame 1. The seat back frame 10 is connected to the seat cushion frame 20 via a reclining mechanism RL.

[0026] (Seat back frame 10) As shown in Figures 2 and 3, the seatback frame 10 includes a pair of left and right main side frames 11, an upper frame 12 which is a pipe frame, a lower frame 13 which serves as a lower connecting frame, and a bridging frame 14 which serves as a cross member.

[0027] The pair of main side frames 11 are disposed facing each other and spaced apart in the seat width direction (left-right direction) to define the width of the seat back S1. Both main side frames 11 are disposed to extend in the up-down direction and are formed in an elongated shape.

[0028] The upper frame 12 is formed by bending a metal pipe material, and has a pair of left and right upper side frames 12a (upper frame sides) that extend approximately vertically, and an upper connecting frame 12b that extends to connect the upper ends of the upper side frames 12a.

[0029] The pair of upper side frames 12a are connected at their lower portions to the upper portions of the main side frames 11 by welding, thereby constituting a pair of back side frames 10a together with the pair of main side frames 11. The pair of back side frames 10a are disposed on the sides of the vehicle seat S and constitute the left and right frames of the seat back S1.

[0030] Furthermore, a pillar support portion 12c is attached to the upper connecting frame 12b by welding. The pillar support portion 12c is a tubular body through which two headrest pillars (not shown) hanging down from the headrest S3 are inserted.

[0031] The lower frame 13 is a member that connects the lower portions of the pair of back side frames 10a to each other. The left and right ends of the lower frame 13 are connected by welding to the main side frames 11 that constitute the back side frames 10a.

[0032] The bridging frame 14 is a member that connects the upper portions of the pair of back side frames 10a to each other. The left and right end portions 14a of the bridging frame 14 are connected to the upper portion of the upper side frame 12a that constitutes the back side frame 10a by welding or the like. The left and right end portions 14a of the bridging frame 14 are formed with wire receiving portions 15 (see FIG. 4) that receive wire members 30 (more specifically, upper connecting portions 33) described later.

[0033] In addition, since the configuration of the wire receiving portion 15 on the right and left sides in the seat width direction is the same, the configuration of one end (the right side) will be described below as a representative as necessary. The wire receiving portion 15 is formed as a recess recessed from the inside to the outside in the seat width direction.

[0034] The wire receiving portion 15 has a front portion 15a (first portion) close to the occupant support surface and a rear portion 15b (second portion) far from the occupant support surface. In the seat width direction, the front portion 15a is formed shorter than the rear portion 15b.

[0035] The bridging frame 14 has end receiving portions 16, which are openings for receiving the wire ends 33a of the wire members 30, at the left and right ends 14a, respectively.

[0036] Between the pair of back side frames 10a of the seat back frame 10, a wire member 30 and a pressure-receiving member 40 are disposed.

[0037] (Wire member 30) As shown in Figures 2 and 3, the wire member 30 is a member that connects the pressure-receiving member 40 to the seat back frame 10, and mainly has a pair of left and right extending portions 31, an inclined portion 32, an upper connecting portion 33, and a lower connecting portion 34.

[0038] The extending portions 31 extend in a vertical direction (a direction perpendicular to the seat width direction) as a predetermined direction, and are arranged side by side in the seat width direction. A planar pressure-receiving member 40, which will be described later, is attached to the extending portion 31 of the wire member 30. The inclined portion 32 extends from the upper end of the extending portion 31 diagonally upward toward the outside in the seat width direction.

[0039] The upper connecting portion 33 extends upward from the upper end of the inclined portion 32. As shown in Fig. 4, the upper connecting portion 33 of the wire member 30 has a wire end portion 33a whose end portion in the sheet width direction is bent outward. The wire end portion 33a is inserted into the end portion receiving portion 16 provided in the bridging frame 14, so that the wire end portion 33a is held in an appropriate position. In addition, the wire end portion 33a is prevented from coming out of the end portion receiving portion 16.

[0040] The lower connecting portion 34 connects the pair of left and right extending portions 31, the inclined portion 32, and the upper connecting portion 33. More specifically, the lower connecting portion 34 has a lower end portion extending in the seat width direction, and extends upward from both left and right ends of the lower end portion, then bends and extends toward the inside in the seat width direction to connect to the lower end of the extending portion 31.

[0041] The wire member 30 is connected to the seat back frame 10 by having the lower connecting portion 34 fastened to the front side of the lower frame 13 by a fixing member K and having the upper connecting portion 33 hooked onto a wire receiving portion 15 formed at the end portion 14a of the bridging frame 14.

[0042] More specifically, the wire member 30 (upper connecting portion 33) is hung on the wire receiving portion 15 so as to face from the inside to the outside in the seat width direction. At this time, it is preferable that the extension portion 31, the inclined portion 32 and the upper connecting portion 33 of the wire member 30 are biased toward the outside in the seat width direction (are configured to expand toward the outside in the seat width direction) because this stabilizes the hung state of the wire member.

[0043] In this manner, the wire member 30 is assembled to the seatback frame 10 by hooking the upper connecting portion 33 to the wire receiving portion 15 in the seat width direction. This allows the wire member 30 to be easily assembled to the seatback frame 10, improving the ease of assembly of the wire member 30 to the seatback frame 10. In addition, the upper connecting portion 33 of the wire member 30 is biased outward in the seat width direction and is hooked to the wire receiving portion 15 in a manner that expands its width, which prevents the upper connecting portion 33 from coming off.

[0044] (Pressure-receiving member 40) The pressure-receiving member 40 is a plate-shaped member that receives the load from an occupant sitting in the vehicle seat S, and is made of a material such as resin. The pressure-receiving member 40 is disposed so as to face the back of the occupant.

[0045] 5, the pressure-receiving member 40 has an engagement portion 41 on a back surface 40a opposite to the occupant support surface for engaging with the wire member 30 to fix the pressure-receiving member 40. The engagement portion 41 has an inclined portion 41a inclined outward in the seat width direction. In this configuration, the extension portion 31 of the wire member 30 is fixed to the engagement portion 41 of the pressure-receiving member 40 while being guided by the inclined portion 41a, improving the ease of assembling the pressure-receiving member 40 to the wire member 30.

[0046] The pressure-receiving member 40 is disposed in front of the pair of extending portions 31 of the wire member 30, and the engaging portions 41 on the back surface 40a engage with the extending portions 31. In this manner, the pressure-receiving member 40 is connected to the seat back frame 10 via the wire member 30. That is, the pair of extending portions 31 are disposed at positions overlapping with the pressure-receiving member 40 when viewed from the front side.

[0047] [3. Manufacturing method of vehicle seat] As shown in FIG. 6, the vehicle seat S of this embodiment is manufactured by the following vehicle seat manufacturing method.

[0048] Specifically, the manufacturing method for a vehicle seat of this embodiment is characterized by carrying out the steps of: preparing a seat frame 1 (step ST1) having a pair of back side frames 10a (a pair of side frames) arranged on the sides of the vehicle seat S and a bridging frame 14 bridging the pair of back side frames 10a (a pair of side frames); hanging a wire member 30 to a wire receiving portion 15 provided on the bridging frame 14 (step ST2); and attaching an upholstery material T and a pad member P to the seat frame 1 (step ST3).

[0049] Each step will now be described in detail. In the process (step ST1) of preparing a seat frame 1 having a pair of back side frames 10a arranged on the sides of a vehicle seat S and a bridging frame 14 bridging the pair of back side frames 10a, a seat frame 1 having a seat back frame 10 as shown in Figures 2 and 3 is prepared.

[0050] Specifically, a seatback frame 10 is prepared which includes a pair of left and right main side frames 11, an upper frame 12 which is a pipe frame, a lower frame 13 which serves as a lower connecting frame, and a bridging frame 14 which serves as a cross member.

[0051] Next, in the process (step ST2) of hanging the wire member 30 on the wire receiving portion 15 of the bridging frame 14, the upper connecting portion 33 of the wire member 30 moves from the inside to the outside in the seat width direction and is hung on the wire receiving portion 15 (FIG. 7). At this time, the wire end portion 33a of the wire member 30 moves from the inside to the outside in the seat width direction and is inserted into the end receiving portion 16.

[0052] 7 shows an example in which the upper connecting portion 33 of the wire member 30 is operated by the working arm ARM of the robot. At this time, the upper connecting portion 33 may be hooked to the wire receiving portion 15 and the lower connecting portion 34 may be fixed to the front side of the lower frame 13 by the fixing member K at approximately the same time.

[0053] As described above, the wire receiving portion 15 is formed such that the front portion 15a is shorter than the rear portion 15b in the seat width direction. Therefore, when the wire member 30 is attached to the seat back frame 10 from the front (FIG. 7), the front portion 15a (first portion) does not become an obstacle.

[0054] Moreover, the vicinity of the wire end 33a of the upper connecting part 33 is brought into contact with the rear part 15b (second part) from the front (FIG. 8) and slid outward in the seat width direction, so that it can be hooked to the wire receiving part 15. At this time, the insertion direction when hooking the upper connecting part 33 (wire end 33a) is reversed on the right side (FIG. 4) and the left side (not shown) in the seat width direction.

[0055] Next, in the process of attaching the cover material T and the pad member P to the seat frame 1 (step ST3), the cover material T and the pad member P are attached to the seat back frame 10 and the seat cushion frame 20, respectively.

[0056] According to the manufacturing method for a vehicle seat of this embodiment, the wire member 30 (upper connecting portion 33) is assembled to the seatback frame 10 by hanging it on the wire receiving portion 15 in the seat width direction, thereby improving the ease of assembly of the wire member 30 to the seatback frame 10.

[0057] In addition, since the wire member 30 moves from the inside to the outside in the seat width direction and is hooked onto the wire receiving portion 15, the wire member 30 can be easily assembled to the seat back frame 10.

[0058] Conventionally, it was necessary to insert the end of the wire member molded integrally with the planar pressure-receiving member into a support hole formed in the bridge frame. In contrast, according to the manufacturing method for a vehicle seat of the present embodiment, the upper connecting portion 33 (wire end portion 33a) of the wire member 30 is hooked to the wire receiving portion 15 in the seat width direction. Therefore, it is possible to attach the wire member 30 to the planar pressure-receiving member 40 separately from the wire member 30 at any timing before or after the wire member 30 is hooked to the wire receiving portion 15.

[0059] In other words, the step of attaching the planar pressure-receiving member 40 to the wire member 30 can be performed either before or after the step of hanging the wire member 30 on the wire receiving portion 15 provided on the bridging frame 14 (step ST2).

[0060] In particular, in the manufacturing method for a vehicle seat of this embodiment, after the wire member 30 is hooked to the wire receiving portion 15 of the bridging frame 14, the planar pressure-receiving member 40 can be engaged and fixed to the wire member 30 (extension portion 31) from the front (the side of the seat occupant).

[0061] The movement of the wire member 30 at this time, when viewed from the front of the seatback frame 10, is movement in the front-to-rear direction (the entire wire member 30 moving closer to the seatback frame 10) and movement in the width direction (movement of the upper connecting portion 33 from the inside to the outside in the seat width direction).

[0062] That is, unlike the conventional method, it is not necessary to move the wire member 30 vertically between the pair of back side frames 10a of the seat back frame 10. Furthermore, at the time of assembling the wire member 30 to the seat back frame 10, the wire member 30 and the pressure-receiving member 40 can be separate bodies.

[0063] Therefore, while it is usually difficult for a robot to handle complex movements, the manufacturing method for a vehicle seat of this embodiment makes it possible to use a robot to assemble the wire member 30 to the seatback frame 10, and then assemble the planar pressure-receiving member 40 to the wire member 30 assembled to the seatback frame 10. Note that the manufacturing method for a vehicle seat of this embodiment allows a human to perform manual assembly in each process, or allows an appropriate combination of automated work by a robot and manual work by a human.

[0064] [4. Modifications] The present invention is not limited to the above embodiment. In the following, the description of the parts common to the above embodiment will be omitted, and the description will focus on the differences. Modified examples of the bridge frame are shown in Figs. 9 to 12.

[0065] In the above embodiment, the bridging frame 14 and the wire receiving portion 15 are formed separately, but as shown in Fig. 9, the wire receiving portion 15X may be integrally formed with the bridging frame 14X. Specifically, the front portion 15Xa and the rear portion 15Xb are integrally formed with the end portion 14Xa of the bridging frame 14X and receive the upper connecting portion 33 of the wire member 30. The wire receiving portion 15X is a cutout extending from the inside to the outside in the seat width direction.

[0066] 10, the wire receiving portion 15Y may be integrally formed with the bridging frame 14Y as a three-dimensionally formed cutout. Specifically, the bridging frame 14Y has a front surface, an upper surface, and a lower surface, and the front surface and the lower surface are cut out to form the wire receiving portion 15Y.

[0067] A front portion 15Ya and a rear portion 15Yb are formed on the lower surface of the bridging frame 14Y, and the wire end portion 33a of the wire member 30 passes through a notch in the front surface of the bridging frame 14Y and is hooked onto the wire receiving portion 15Y.

[0068] In the above embodiment, the end receiving portion 16 is formed as a hole that opens in the seat width direction, but the end receiving portion 16Z of the bridging frame 14Z may be formed as a cylinder extending in the seat width direction as shown in Fig. 11. The outer end of the end receiving portion 16Z in the seat width direction may be open or closed.

[0069] Furthermore, in the above embodiment, the wire receiving portion 15 is formed linearly in the seat width direction, but may be formed curved in the direction (forward) toward the occupant support surface like the wire receiving portion 15Z. Specifically, as shown in Fig. 12, the front portion 15Za (first portion) and the rear portion (second portion) 15Zb may be formed curved in the direction (forward) toward the occupant support surface. In such a configuration, it is possible to guide the upper connecting portion 33 of the wire member 30 toward the wire receiving portion 15Z.

[0070] 13 to 18 show seat frames according to modified examples. The seat frames according to the modified examples differ from the above embodiment in the configurations of the wire members and the pressure-receiving members.

[0071] (First Modification) Fig. 13 is a perspective view of a seat frame according to a first modified example, and Fig. 14 is a front view of the seat frame according to the first modified example. As shown in Fig. 13, a pair of extension parts 131 of the wire member 130 are arranged spaced apart in the seat width direction. The distance between the extension parts 131 of the wire member 130 arranged spaced apart in the seat width direction becomes wider from the lower frame 113 on the lower side to the bridging frame 114 on the upper side.

[0072] The engaging portions 141 of the pressure-receiving member 140 are disposed at a predetermined distance apart in the seat width direction, and the distance between the engaging portions 141 is different in the up-down direction. Therefore, in this configuration, when the distance between the extending portions 131 of the wire member 130 disposed at a distance in the seat width direction approximately matches the distance between the engaging portions 141, the engaging portions 141 appropriately engage with the extending portions 131. Thus, the position of the pressure-receiving member 140 with respect to the extending portions 131 of the wire member 130 is regulated to be an appropriate position.

[0073] (Second Modification) 15 is a perspective view of a seat frame 200 according to a second modified example. A wire member 230 is disposed between back side frames 210a disposed on the sides of a seat back frame 210. An extension portion 231 of the wire member 230 is formed by repeatedly bending outward and inward in the seat width direction.

[0074] The engaging portion 241 arranged on the back surface of the pressure-receiving member 240 is arranged between the bent extending portions 231 in the up-down direction. More specifically, the engaging portion 241 is arranged in the recess of the extending portion 231 bent so as to be recessed outward in the sheet width direction in the up-down direction. With this configuration, the position (up-down position) of the pressure-receiving member 240 relative to the extending portion 231 of the wire member 230 is regulated to be an appropriate position.

[0075] (Third Modification) 16 is a front view of a seat frame 300 according to a third modified example. A wire member 330 is disposed between back side frames 310a disposed on the sides of a seat back frame 310. The wire member 330 has a protruding portion 335 bent so as to protrude upward from a lower connecting portion 334 between a pair of extending portions 331 spaced apart in the seat width direction.

[0076] The distance between the extensions 331 of the wire members 330 arranged at a distance in the sheet width direction becomes wider from the lower frame 313 on the lower side to the bridging frame 314 on the upper side. In other words, the extensions 331 are tapered so as to widen outward in the sheet width direction.

[0077] The protruding portion 335 of the wire member 330 is tapered so that its width narrows toward the top. The interval between the adjacent extending portion 331 and protruding portion 335 widens toward the top. In this case, the position of the engaging portion 341 with respect to the protruding portion 335 is disposed lower than the position of the engaging portion 341 corresponding to the extending portion 331. The pressure-receiving member 340 is inclined so that the upper and outer portion in the sheet width direction faces forward.

[0078] (Fourth Modification) Fig. 17 is a front view of a seat frame 400 according to the fourth modified example, and Fig. 18 is a perspective view of the seat frame 400 according to the fourth modified example. The pressure-receiving member 440 has a central portion corresponding to the backrest, and further has side support portions 445 corresponding to the sides of the occupant. The side support portions 445 mainly support the rearward portions of the sides of the upper body of the occupant at chest height.

[0079] The side support parts 445 are formed integrally as the pressure-receiving member 440, and extend diagonally forward outward in the left-right direction from upper parts of both left and right ends of the central part, more specifically, from parts corresponding to the height of the occupant's chest, and extend to the front side of the back side frame 410a with a predetermined gap in the front-rear direction between the support wire 410b of the back side frame 410a. The support wire 410b is curved so as to protrude forward, and supports the side support parts 445 from their backsides.

[0080] (Other variations) In the above embodiment, the wire member 30 engaged with the clip-shaped engaging portion 41 provided on the back surface 40a of the pressure-receiving member 40, but the wire member 30 may also be fixed by entering a groove formed on the back surface 40a of the planar pressure-receiving member 40 so as to extend in the vertical direction.

[0081] In the above embodiment, the shape of the upper frame is inclined inward in the seat width direction from the pair of left and right upper side frames (upper frame side portions) to the upper connecting frame extending to connect the upper ends of the upper side frames. The upper frame may not be inclined inward in the seat width direction from the pair of left and right upper side frames to the upper connecting frame, and the upper side frames may be bent at approximately a right angle to form the upper connecting frame.

[0082] In the above embodiment, the bridging frame is attached to the upper side frame at a position above the area where the main side frame and the upper side frame overlap. The positions of the bridging frame and the wire receiving portion are not limited to this, and may be at a position below the upper end of the main side frame and at the same height as the area where the main side frame and the upper side frame overlap.

[0083] The vehicle seat and the method for manufacturing the vehicle seat have been described above by taking the wire member hung on the seat back frame as an example. The vehicle seat and the method for manufacturing the vehicle seat are not limited to application to the seat back frame, but may also be applied to the seat cushion frame.

[0084] In addition, with regard to the wire member, a wire member that connects the pressure-receiving member to the seat back frame has been described as an example, but as long as the wire member is placed between a pair of side frames, it is also possible for the wire member not to have a pressure-receiving member attached. [Explanation of symbols]

[0085] S Vehicle seats (vehicle seats) S1 Seat Back S2 Seat Cushion S3 Headrest P Pad material T Skin material 1 Seat frame 10 Seat back frame (seat frame) 10a Backside frame (side frame) 11 Main side frame 12 Upper frame 12a Upper Side Frame 12b Upper connecting frame 12c Pillar support 13 Lower frame 14 Bridge Frame 14a End 15, 15X, 15Y, 15Z Wire Receptacle 15a,15Xa,15Ya,15Za Front part (1st part) 15b,15Xb,15Yb,15Zb Rear part (2nd part) 16,16Z End Receptacle 20 Seat cushion frame RL Reclining mechanism 30 Wire material 31 Extension 32 Slope 33 Upper connection part 33a Wire End 34 Lower connection part 40 Pressure-receiving member 40a Back 41 Engagement part 41a Slope 41b Recess K Fixing member ARM Working arm 100,200,300,400 Seat frame 110,210,310,310,410 Seat back frame (seat frame) 110a, 210a, 310a, 410a Back side frame (side frame) 410b Support wire 111,211,311,411 Main side frame 112,212,312,412 Upper frame 112a, 212a, 312a, 412a Upper side frame 112b, 212b, 312b, 412b Upper connecting frame 112c, 212c, 312c, 412c Pillar support 113,213,313,413 Lower frame 114,214,314,414 Bridge frame 120,320,420 Seat cushion frame 130,230,330,430 Wire material 131,231,331,431 Extension 132,232,332,432 Slope 133,233,333,433 Upper connection part 133a, 233a, 333a, 433a Wire ends 134,234,334,434 Lower connection 140,240,340,440 Pressure-receiving member 141,241,341,441 Engagement part

Claims

1. A vehicle seat having a seat frame, The seat frame includes: A pair of side frames disposed on sides of the vehicle seat; A bridging frame that bridges the pair of side frames, A wire member is disposed between the pair of side frames, A planar pressure-receiving member is attached to the wire member, The vehicle seat, wherein the pressure-receiving member extends in a width direction of the vehicle seat and is bridged across the side frames and the wire members.

2. A vehicle seat as described in claim 1, characterized in that the pressure-receiving member has an inclined surface that is inclined relative to the side frame when viewed from the direction in which the side frame extends.

3. A vehicle seat as described in claim 2, characterized in that the inclined surface of the pressure-receiving member inclines so as to move away from the occupant side as it moves inward in the width direction of the vehicle seat.

4. The pressure-receiving member has an engagement portion for fixing the pressure-receiving member to the wire member on an opposite side to the occupant support surface, 4. The vehicle seat according to claim 1, wherein the pressure-receiving member is bridged across the side frame and the wire member when the engaging portion is attached to the wire member.

5. A vehicle seat as described in Claim 4, characterized in that the engagement portion has an inclined portion inclined outward in the width direction of the vehicle seat.

6. The pressure-receiving member has a side support portion corresponding to a side of an occupant, The vehicle seat according to claim 4, wherein the side frame supports the pressure-receiving member from a surface opposite to the occupant support surface.

7. The pressure-receiving member has a side support portion corresponding to a side of an occupant, The vehicle seat according to claim 4, wherein the engagement portion is disposed on the pressure-receiving member further inward in the width direction of the vehicle seat than the side support portion.

8. A vehicle seat as described in claim 4, characterized in that the engagement portion is positioned at a position overlapping the pressure-receiving member when viewed from the occupant support surface.

9. A vehicle seat as described in claim 4, characterized in that the engagement portion is positioned at a position farthest from the occupant on the surface of the pressure-receiving member opposite the occupant support surface.

10. The bridge frame has an end receiving portion that opens in the width direction of the vehicle seat, A vehicle seat as described in any one of claims 1 to 9, characterized in that an end of the wire member in the width direction of the vehicle seat is bent outward and inserted into the end receiving portion from the inside of the vehicle seat in the seat width direction.