JP6379747B2 - Vehicle seat structure - Google Patents

Description

  The present invention relates to a vehicle seat structure configured such that a locking member provided on a skin is locked to a wire frame provided on a cushion frame.

  As a vehicle seat, for example, a seat configured by covering a cushion pad with a skin as disclosed in Patent Document 1, Patent Document 2, and the like is known. The epidermis is locked to a cushion frame that supports the cushion pad. A wire frame is fixed to the cushion frame, and a locking material provided on the skin is locked to the wire frame. Thereby, the tension state of the skin which covers a cushion pad is maintained.

  Patent Document 1 discloses a cushion frame. The cushion frame includes a main frame and a sub-wire on which a seat cushion cover that forms the peripheral shape of the seat cushion is stretched. Further, Patent Document 2 discloses a seat back frame including a trim cover that covers a cushion material and an attachment wire for attaching the trim cover. A trim cord provided on the end side of the trim cover is hooked on the mounting wire of this example.

Japanese Utility Model Publication No. 64-119 JP2013-133052A

  In the structure disclosed in the above-mentioned patent document, the wire frame (sub-wire, mounting wire, etc.) to which the locking material is locked is fixed to the side portion of the cushion frame with both ends curved. . This curvature is provided in order to provide an appropriate space between the side of the cushion frame and the straight portion of the wire frame. The locking material is locked in the straight portion of the wire frame, and it is difficult to lock the locking material in the curved portion of the wire frame.

  The wire frame may be made smaller due to the layout of the members constituting the vehicle body. On the other hand, since the wire frame has a curved portion as described above, the locking region of the locking material becomes small. If the locking region is small, it may be difficult to adjust the locking position of the locking material, and as a result, it may be difficult to keep the skin tension state good.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a vehicle seat structure capable of maintaining a good tension of the skin of the vehicle seat.

In order to achieve the above object, a vehicle seat structure according to the present invention has a skin covering a cushion pad of a vehicle seat, and a cushion frame on which the cushion pad is placed and a linear wire frame is connected, In the vehicle seat structure provided with a locking member for locking to the wire frame at the edge of the skin, the vehicle front portion of the cushion frame extends in the vehicle width direction, and the side portions on both sides in the vehicle width direction are Extending in the vehicle front-rear direction, a bracket is fixed to the inner side in the vehicle width direction of the side portion of the cushion frame, and the wire frame is disposed in the vehicle front-rear direction on the inner side in the vehicle width direction of the side portion of the cushion frame. An extending linear portion is provided, and the locking member is locked to the linear portion, and fixing portions connected to the cushion frame are provided at both ends of the linear portion. It is and either one of the fixing portion is fixed to the side walls of the bracket.

  Further, in one aspect of the vehicle seat structure according to the present invention, a through hole is formed in the side wall of the bracket, or a slit that opens upward of the vehicle is provided, and the straight portion of the wire frame is provided. The fixing portion is fixed to the side wall in a state where the tip is inserted through the through hole or the slit.

  In one aspect of the vehicle seat structure according to the present invention, a seat rail extending in the vehicle front-rear direction is disposed below the cushion frame in the vehicle, and the seat rail is a lower rail fixed on a vehicle body floor; A slider is slidably engaged with the lower rail, and the bracket is connected to the slider.

  Further, in one aspect of the vehicle seat structure according to the present invention, a bottom portion that extends horizontally is provided at a vehicle lower portion of the side wall of the bracket, and a bolt hole that penetrates in the vehicle vertical direction on the vehicle upper surface of the bottom portion. The bracket and the slider are connected by screwing the bolt into the welding nut with the bottom interposed from the bottom of the bracket at the bottom of the vehicle. In a state where the bracket and the slider are connected, the wire frame is disposed on the outer side in the radial direction of the axial center than the outer portion of the welding nut.

  According to the present invention, since one end of the wire frame is not fixed directly to the cushion frame but fixed to the bracket, it is not necessary to bend the wire frame toward the cushion frame. For this reason, the linear part used as the latching | locking part of a latching material can ensure long as much as it is not necessary to provide a bending margin. As a result, even in a narrow range, it is possible to secure a sufficient hook range of the epidermis. Further, in a state where the locking member is hooked on the wire frame, even when the locking member is displaced along the wire frame, the shift is stopped by the end portion of the locking member coming into contact with the side wall of the bracket. For this reason, it can suppress that a latching material moves to a bending part, and remove | deviates. Further, by joining the wire frame to the tip of the bracket, it is possible to obtain the effect that the wire frame supports the bracket, and to obtain a synergistic effect that improves the holding strength of the bracket.

  When bending is performed on both ends of the wire frame, elastic deformation is likely to occur at the bent portion, so that there is a possibility that sagging or wrinkles of the skin due to deformation of the wire may occur due to the tension of the skin. On the other hand, according to the sheet | seat of this invention, since the bending part of a wire frame can be reduced, it becomes possible to make it difficult to produce the elastic deformation at the time of receiving the tension | tensile_strength of skin.

  Further, according to one aspect of the vehicle seat structure according to the present invention, when the hole is provided in the side wall of the bracket and the wire frame is passed, the wire frame is supported and stabilized in the hole. At the time of welding, the positioning location by a jig can be reduced. Further, only by adjusting the length of the tip of the wire frame to be longer, it is possible to absorb the error in the dimensions of the parts constituting the bracket and other frames. Further, the welding distance can be shortened as compared with the case where the tip of the wire frame is welded along the cushion frame. Furthermore, since the tip of the wire frame can be accommodated in the bracket, there is no need for processing or covering the tip.

  Moreover, according to the aspect of the vehicle seat structure according to the present invention, since the wire frame is fixed to the bracket connected to the slider of the seat rail, it is possible to ensure high strength for the portion to which the wire frame is fixed. It becomes possible.

  Further, according to one aspect of the vehicle seat structure according to the present invention, since the tip of the straight portion of the wire frame is located in the outer region of the welding nut above the vehicle, the tip of the straight portion extends to the inside of the bracket. When letting out, when the bolt is fastened to the welding nut from the lower side of the vehicle, it is possible to prevent the upper part of the bolt from contacting the wire frame.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of an embodiment of a vehicle seat structure according to the present invention, in which (a) shows a skin, (b) shows a cushion pad, and (c) shows a cushion frame. It is AA sectional drawing of FIG. It is a top view of the wire frame of FIG. 1 and its periphery. It is the perspective view which looked at the wire frame of FIG. 3 from the vehicle back. It is a schematic exploded perspective view which shows the cushion frame of FIG. 1, and the seat rail arrange | positioned under it. It is a schematic perspective view which shows the modification of embodiment of FIG.

  Hereinafter, an embodiment of a vehicle seat structure according to the present invention will be described with reference to the drawings (FIGS. 1 to 6). The vehicle seat structure of the present embodiment includes a cushion pad 18 serving as a cushion material and a skin 15 that covers the cushion pad 18. Further, the vehicle seat structure has a cushion frame 10 on which a cushion pad 18 covered with an outer skin 15 is placed. A seat rail 45 for moving the vehicle seat is disposed below the cushion frame 10 in the vehicle.

  First, the skin 15 will be described. As shown in FIGS. 1 and 2, the skin 15 is configured by stitching a plurality of skin materials 15 a to 15 c along the shape of the cushion pad 18. The skin 15 includes a skin material 15a that covers a seat surface portion of the seat, a skin material 15c that covers an outer portion in the vehicle width direction, and a skin material 15b provided at a corner of the seat surface so as to connect the skin materials 15a and 15c. Etc. These skin materials 15a to 15c are stitched as shown in FIG.

  At the outer edge of the skin 15 in the vehicle width direction, a locking member 16 that locks the wire frame 20 is provided. As shown in FIG. 2, the locking member 16 is attached to the vehicle lower portion of the skin material 15c covering the outer side in the vehicle width direction by stitching. The locking member 16 has a hook shape in cross section.

  The locking member 16 is configured to be hooked on a wire frame 20 described later. Specifically, in the direction indicated by the arrow X in FIG. 2, the wire 16 is disposed inside the U-shaped pipe frame 11 by winding the locking member 16 from the vehicle lower side to the lower surface of the U-shaped pipe frame 11 described later. By being hooked on the 20 straight portions 21, the state in which the skin 15 is stretched is maintained. In addition, illustration of the cushion pad 18 is abbreviate | omitted in FIG.

  Next, the cushion frame 10 will be described. As shown in FIG. 1, the cushion frame 10 includes a U-shaped pipe frame 11, a pair of hinge brackets 13, and a pipe member 12 that connects the hinge brackets 13 to each other, and has a frame shape when viewed from above the vehicle. The U-shaped pipe frame 11 has a U-shape that opens rearward of the vehicle as viewed from above the vehicle. A vehicle front portion 11a of the U-shaped pipe frame 11 extends in the vehicle width direction, and side portions 11b on both sides in the vehicle width direction extend in the vehicle front-rear direction.

  The hinge bracket 13 is connected to each of the vehicle rear portions of the side portions 11b on both sides in the vehicle width direction of the U-shaped pipe frame 11. The hinge bracket 13 is a member for rotating a seat back (not shown) of the vehicle seat, and a rotation shaft (not shown) for rotating the seat back is directly or indirectly attached thereto. A horizontal flat surface 13 a is formed at the vehicle lower portion of the hinge bracket 13. A rear welding nut 42 for connecting the hinge bracket 13 to the seat rail 45 is fixed on the flat surface 13a. The rear welding nut 42 has a bolt hole penetrating in the vehicle vertical direction. The seat rail 45 will be described later.

  The pipe material 12 is a member extending in the vehicle width direction, and connects the hinge brackets 13 on both sides (left and right) in the vehicle width direction. As described above, the cushion frame 10 is configured in a frame shape by the pipe material 12, the pair of hinge brackets 13, and the U-shaped pipe frame 11.

  Further, the cushion frame 10 includes two strip-shaped plate members 14 extending in the vehicle front-rear direction. These plate members 14 are arranged at intervals in the vehicle width direction so as to bridge the vehicle front portion 11a of the U-shaped pipe frame 11 and the pipe member 12, and are configured to receive cushion pads 18. . The vehicle front portions of these plate members 14 are fixed to the vehicle front portion 11a of the U-shaped pipe frame 11 by welding or the like, and the vehicle rear portions are fixed to the pipe material 12 by welding or the like.

  Next, the front bracket 30 will be described. A pair of left and right front brackets 30 are attached to the U-shaped pipe frame 11. Each front bracket 30 is fixed to the front side of the vehicle among the side portions 11b on both sides in the vehicle width direction of the U-shaped pipe frame 11 by welding or the like. A front bracket 30 on the near side in FIG. 1 is fixed to a curved portion of the U-shaped pipe frame 11. The back side front bracket 30 in FIG. 1 is fixed to a side portion 11b of the U-shaped pipe frame 11 and extending in the vehicle front-rear direction. The pair of front brackets 30 are brackets for connecting the cushion frame 10 to a seat rail 45 described later.

  As described above, the hinge bracket 13 is disposed at the rear portion of the cushion frame 10. Since the flat surface 13a is formed in the bottom part of the hinge bracket 13, the space which attaches the welding nut (rear welding nut 42) for connecting with the seat rail 45 can be ensured. However, since the front side of the cushion frame 10 is constituted by the U-shaped pipe frame 11 having a circular cross section, there is no flat portion to which a welding nut (front welding nut 41) can be attached. Therefore, a bracket for attaching the front welding nut 41 is required.

  As shown in FIGS. 3 and 4, a front side wall 31 extending in the vehicle vertical direction is provided at the front of the front bracket 30, and a rear side wall 32 extending in the vertical direction of the vehicle is provided at the rear of the vehicle. . The front side wall 31 and the rear side wall 32 are arranged at an interval in the vehicle front-rear direction. A bottom 33 is provided at the vehicle lower portion of the front side wall 31 and the rear side wall 32 so as to connect the front side wall 31 and the rear side wall 32. A horizontal flat surface 33a is formed on the bottom 33, and a front welding nut 41 for connecting the front bracket 30 to the seat rail 45 is fixed on the flat surface 33a. The bolt hole formed in the front welding nut 41 penetrates in the vehicle vertical direction.

  A front side wall 31 and a rear side wall 32 related to the front side bracket 30 (the front side bracket 30 shown in FIGS. 3 and 4) in FIG. 1 are arranged in parallel. The front side wall 31 and the rear side wall 32 of the front bracket 30 on the near side in FIG. 1 are arranged so that the front side wall 31 is inclined with respect to the rear side wall 32. It arrange | positions so that the distance of the vehicle width direction inner side edge of the front side wall 31 and the rear side wall 32 may become smaller than the distance of outer side edges. The front side wall 31 and the rear side wall 32 are arranged so as to have a square shape when viewed from above. This is because the front side wall 31 of the front bracket 30 is configured so as to follow the shape of the curved portion of the U-shaped pipe frame 11.

  As shown in FIGS. 3 and 4, the rear side wall 32 is formed with a through hole 32 c that penetrates in the vehicle front-rear direction. The straight portion 21 of the wire frame 20 is inserted into the through hole 32c. With the straight portion 21 inserted, the wire frame 20 is fixed to the front surface 32a of the rear side wall 32 by welding or the like. The through hole 32 c is provided in the rear side wall 32 of both the left and right front brackets 30. The fixing of the wire frame 20 will be described later.

  Here, the seat rail 45 will be described. As shown in FIG. 5, the seat rail 45 includes a pair of left and right lower rails 46 fixed on a vehicle body floor (not shown) and a pair of sliders 47 that are slidably engaged with the respective lower rails 46. Yes. The pair of lower rails 46 extends in the vehicle front-rear direction. The cushion frame 10 is connected to each slider 47. One slider 47 is provided with a lever 49 for operating to move the sheet.

  Each slider 47 has a U-shape extending in the vehicle front-rear direction and having a transverse section opened downward. A fixing surface 47 a to which the front bracket 30 and the hinge bracket 13 are fixed is formed on the upper portion of the slider 47. Bolt holes 47b through which the bolts 43 are inserted one by one in the front and rear are formed in the fixed surface 47a. The front bolt hole 47 b corresponds to the front welding nut 41 of the front bracket 30, and the rear bolt hole 47 b corresponds to the rear welding nut 42 fixed to the hinge bracket 13. The front bracket 30 is connected to the vehicle front side of the fixed surface 47a of one slider 47, and the hinge bracket 13 is connected to the rear side of the fixed surface 47a. Similarly, the front bracket 30 and the hinge bracket 13 are connected to the fixing surface 47a of the slider 47 on the opposite side. The connection between the slider 47 and the front bracket 30 and the hinge bracket 13 will be described later.

  Next, the wire frame 20 will be described. As shown in FIGS. 3 and 4, wire frames 20 are provided on the side portions 11 b on both sides in the vehicle width direction of the U-shaped pipe frame 11. That is, the wire frame 20 is disposed within the frame of the cushion frame 10. The wire frame 20 is made of a metal wire, and includes a straight portion 21, a front fixing portion 23, a bending portion 22, and a rear fixing portion 24. The wire frame 20 shown in FIGS. 3 and 4 is the wire frame 20 shown on the back side of the two wire frames 20 in FIG. 5.

  The straight line portion 21 is disposed on the inner side in the vehicle width direction of the side portion 11b of the U-shaped pipe frame 11 with an interval in the vehicle width direction, and extends in the vehicle front-rear direction. As described above, the locking member 16 of the skin 15 is locked to the straight portion 21. The vehicle front portion of the straight portion 21 is in a state of being inserted through the through hole 32 c of the rear side wall 32 of the front bracket 30. The front adhering portion 23 is a part of the straight portion 21 and is not bent. The front fixing portion 23 includes a portion inserted through the through hole 32 c of the rear side wall 32 of the front bracket 30. The front fixing part 23 is fixed to the front surface 32a of the rear side wall 32 around the through hole 32c of the rear side wall 32 by welding or the like. In this example, welding is performed at a portion indicated by W in FIG.

  The curved portion 22 is a portion that is curved in the horizontal direction at two front and rear portions in the vehicle rear portion of the straight portion 21. The front side is curved outward in the vehicle width direction, and the rear side is curved inward in the vehicle width direction. The rear side of the vehicle extends beyond the curved portion 22 in the vehicle front-rear direction. The rear adhering portion 24 is a portion extending in the vehicle front-rear direction on the vehicle rear side with respect to the bending portion 22. The rear fixing part 24 is fixed to the side part 11b of the U-shaped pipe frame 11 by welding or the like. That is, the wire frame 20 is bent at the curved portion 22 toward the side portion 11b of the U-shaped pipe frame 11, and the rear end of the vehicle is placed parallel to the side portion 11b and fixed by welding or the like. Has been. In addition, although the wire frame 20 (FIGS. 3 and 4) shown on the back side in FIG. 5 has been described, the wire frame 20 on the near side in FIG. 5 is similarly configured.

  Here, the connection between the slider 47 and the front bracket 30 and the hinge bracket 13 will be described.

  As shown in FIG. 5, the bolt 43 (FIG. 3) inserted through the bolt hole 47 b on the front side of the fixed surface 47 a of the slider 47 passes through a hole (not shown) provided in the bottom 33 of the front bracket 30. The front welding nut 41 is screwed. By performing this with the sliders 47 on both the left and right sides, each slider 47 is connected to each front bracket 30. Similarly, the bolt 43 inserted through the bolt hole 47b on the rear side of the fixing surface 47a of the slider 47 is screwed into the rear welding nut 42 while passing through a hole (not shown) provided in the bottom of the hinge bracket 13. . By performing this with the sliders 47 on the left and right sides, each slider 47 is connected to each hinge bracket 13. Thereby, the cushion frame 10 is fixed to the pair of sliders 47.

  In a state where the front bracket 30 and the slider 47 are connected, the wire frame 20 is disposed on the outer side in the radial direction than the outer portion of the front welding nut 41. Here, the radial direction is a radial direction with respect to the axial center of the front welding nut 41. In this example, the front fixing portion 23 and the tip of the wire frame 20 are disposed in the outer region of the space region above the vehicle of the front welding nut 41. That is, the front welding nut 41 is disposed above the vehicle so that there is no wire frame 20. In this example, as shown in FIG. 3, the front end of the front fixing portion 23 is provided so as to be located on the inner side in the vehicle width direction than the front welding nut 41. That is, the vehicle upper portion of the bolt 43 and the front fixing portion 23 and the tip of the wire frame 20 are configured not to contact each other.

  As a modification of the present embodiment, as shown in FIG. 6, a slit 35 that opens upward of the vehicle may be provided instead of the through hole 32 c in the rear side wall 32 of the bracket. In this case, welding is performed on the front surface 32 a of the rear side wall 32 of the front bracket 30 with the vehicle front end of the straight portion 21 of the wire frame 20 inserted.

  By configuring the vehicle seat structure as described above, the following effects can be obtained. According to the present embodiment, since one end of the wire frame 20 is not directly fixed to the cushion frame 10 but is fixed to the front bracket 30, it is not necessary to bend the wire frame 20 toward the cushion frame 10. For this reason, the linear part 21 used as the hook part of the latching material 16 can be ensured long enough not to provide a bending allowance. As a result, it is possible to sufficiently secure the hooking range of the skin 15 even in a narrow range. Further, in the state where the locking member 16 is hooked on the wire frame 20, the end of the locking member 16 is positioned at the rear side wall 32 of the front bracket 30 even when the locking member 16 is displaced forward along the wire frame 20. The abutment stops when it abuts. For this reason, it is possible to prevent the locking member 16 from moving to the curved portion and coming off. Moreover, by joining the wire frame 20 to the rear side wall 32 of the front bracket 30, the effect that the wire frame 20 supports the front bracket 30 can be obtained, and the synergistic effect of improving the holding strength of the front bracket 30 can be obtained. Can do.

  When bending is performed on both ends of the wire frame 20, elastic deformation is likely to occur at the bent portion, so that the skin 15 may be slack or wrinkled due to the deformation of the wire due to the tension of the skin 15. On the other hand, according to this embodiment, since the bending part (curved part 22) of the wire frame 20 can be reduced, it becomes possible to make it hard to produce the elastic deformation at the time of receiving the tension | tensile_strength of the skin 15. .

  According to the present embodiment, when the through hole 32c is provided in the rear side wall 32 of the front bracket 30 and the wire frame 20 is passed, the wire frame 20 is supported and stabilized in the through hole 32c. At the time of welding 20, positioning positions by the jig can be reduced. Further, only by adjusting the length of the tip of the wire frame 20 to be longer, it is possible to absorb the error in the dimensions of the parts constituting the front bracket 30 and other frames. Further, the welding distance can be shortened as compared with the case where the tip of the wire frame 20 is welded along the cushion frame 10. Furthermore, since the front end of the wire frame 20 is housed in the front bracket 30, that is, the front end of the wire frame 20 is between the front side wall 31 and the rear side wall 32, there is no need for processing or covering the front end.

  Moreover, according to this embodiment, since the wire frame 20 is fixed to the front bracket 30 connected to the slider 47 of the seat rail 45, it is possible to ensure high strength for the portion to which the wire frame 20 is fixed. Become. Thereby, high positional accuracy can be obtained also in the wire frame 20.

  Furthermore, according to this embodiment, since the front-end | tip of the linear part 21 of the wire frame 20 is located in the outer area | region of the vehicle upper area | region of the front welding nut 41, when extending the front-end | tip of the linear part 21 inside a bracket In this case, when the bolt 43 is fastened to the front welding nut 41 from below the vehicle, it is possible to prevent the vehicle upper portion of the bolt 43 from contacting the wire frame 20.

  The description of the above embodiment is an example for explaining the present invention, and does not limit the invention described in the claims. Moreover, each part structure of this invention is not restricted to the said embodiment, A various deformation | transformation is possible within the technical scope as described in a claim.

  For example, in the present embodiment, the through hole 32c and the slit 35 are provided and the straight portion 21 is inserted and welded. However, the present invention is not limited to this. For example, you may weld directly to the rear surface 32b of the rear side wall 32. FIG. Further, the front bracket has the wire frame 20 fixed to a bracket for connection to the seat rail 45, but is not limited thereto. You may fix to a bracket in order to connect to another member.

  Moreover, although the linear part 21 is provided in the vehicle front part of the wire frame 20, and it adheres to the front bracket 30, it is not restricted to this. You may comprise so that the linear part 21 may be provided in a vehicle rear part and it may adhere to the bracket arrange | positioned at the back of the wire frame 20. FIG. Also in this case, the bracket other than that connected to the seat rail 45 may be used.

  Further, the rear side wall 32 of the front bracket 30 is arranged so as to be orthogonal to the wire frame 20, but is not limited to this, and is inclined with respect to the longitudinal direction of the wire frame 20 in accordance with the layout convenience. You may lean on.

DESCRIPTION OF SYMBOLS 10 Cushion frame 11 U-shaped pipe frame 11a U-shaped pipe frame vehicle front part 11b U-shaped pipe frame side part 12 Pipe material 13 Hinge bracket 13a Flat surface 14 Plate material 15 Skin 15a, 15b, 15c Skin material 16 Locking material 18 Cushion pad 20 Wire frame 21 Linear portion 22 Curved portion 23 Front adhering portion 24 Rear adhering portion 30 Front bracket 31 Front side wall 32 Rear side wall 32a Front surface 32b Rear surface 32c Through hole 33 Bottom portion 33a Flat surface 35 Slit 41 Front welding nut 42 Rear welding nut 42 43 Bolt 45 Seat rail 46 Lower rail 47 Slider 47a Fixing surface 47b Bolt hole 49 Lever

Claims (4)

A skin covering a cushion pad of a vehicle seat, and a cushion frame on which the cushion pad is placed and a linear wire frame is connected, and the edge of the skin is engaged with the wire frame. In the vehicle seat structure provided with the stop material,
The vehicle front portion of the cushion frame extends in the vehicle width direction, the side portions on both sides in the vehicle width direction extend in the vehicle front-rear direction, and a bracket is fixed to the vehicle width direction inner side of the side portion of the cushion frame,
The wire frame is provided with a linear portion extending in the vehicle front-rear direction on the vehicle width direction inner side of the side portion of the cushion frame, and the locking member is locked to the linear portion, and the linear portion At both ends, a fixing portion connected to the cushion frame is provided,
Either one of the fixing portions is fixed to a side wall of the bracket. A through hole is drilled in the side wall of the bracket, or a slit that opens upward in the vehicle is provided,
2. The vehicle seat structure according to claim 1, wherein the fixing portion is fixed to the side wall in a state where a tip of the linear portion of the wire frame is inserted through the through hole or the slit. . A seat rail extending in the vehicle front-rear direction is disposed below the cushion frame in the vehicle,
The seat rail has a lower rail fixed on the vehicle body floor and a slider that slidably engages with the lower rail,
The vehicle seat structure according to claim 1, wherein the bracket is connected to the slider. A bottom portion that extends horizontally is provided at the vehicle lower portion of the side wall of the bracket,
A welding nut formed with a bolt hole penetrating in the vehicle vertical direction is fixed to the vehicle upper surface of the bottom portion,
The bracket and the slider are connected by screwing the bolt to the welding nut in a state where the bottom is interposed from the vehicle lower side of the bottom of the bracket,
4. The vehicle according to claim 3, wherein in a state in which the bracket and the slider are connected, the wire frame is disposed on an outer side in the radial direction of the shaft center with respect to an outer portion of the welding nut. Sheet structure.

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