Vehicular seat

Abstract

To provide a vehicular seat whose frame can be reduced in size and in weight.SOLUTION: A vehicular seat 1 comprises a seat cushion 2 and a seat back 3. The seat cushion 2 has a frame-like frame 7 and a support member 8 that is supported by the frame 7 to support an occupant. The support member 8 has a plate-like main body 20 and an inclined part 21 inclining from portions of left and right side edges of the main body 20 toward a front side and extended outward. A central hole 29 is formed at a center in a lateral direction of a portion fitting in the lateral direction to the inclined part 21 in the main body 20. A pair of lateral holes 30 are formed at left and right sides of the central hole 29 to stride across the main body 20 and the inclined part 21. Lateral dented parts 32 dented toward a back side are provided on edge parts of the lateral holes 30 at the front side of the inclined part 21.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a vehicle seat, and more particularly to a vehicle seat having a support member provided inside a frame for supporting an occupant. [Background technology]

[0002] A vehicle seat is known in which a support member that is provided inside a seat cushion frame and supports an occupant is formed from a plate-shaped resin member (for example, see Patent Document 1). The support member has inclined portions that extend outward at an upward angle from the left and right side edges of the rear portion of the main body. The inclined portions support the occupant's buttocks from diagonal sides, so the support force on the occupant's buttocks is distributed. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6309130 specification Summary of the Invention [Problem to be solved by the invention]

[0004] An object of the present invention is to provide a vehicle seat that can reduce the size and weight of the frame. In addition, in a plate-shaped support member having an inclined portion, it is sometimes desired to attach another component to the back surface of the inclined portion. Providing mounting holes in the inclined portion to attach a clip that grips the other component reduces the strength of the inclined portion. In light of this background, one aspect of the present invention aims to provide a vehicle seat that has a plate-shaped support member having an inclined portion, in which mounting holes are provided in the inclined portion and the reduction in strength caused by providing the mounting holes can be compensated for. [Means for solving the problem]

[0005] In order to solve the above problems, the present invention provides a vehicle seat (1) having a seat cushion (2) and a seat back (3), comprising: a frame (7) provided on at least one of the seat cushion and the seat back; a plate-shaped main body (20) provided within the frame and extending substantially parallel to the frame; a pair of left and right inclined portions (21) extending outward from at least a part of the left and right side edges of the main body at an inclination toward the front side; a support member (8) for supporting an occupant; and a support member (8) provided on the front side of the frame and the support member. The support member has a pad (9) placed on the support member and a skin material (10) covering the pad, and the support member is formed from resin into which a linear member (24) is insert-molded, and a central hole (29) is provided in the center of the left-right direction of a portion of the main body that is aligned in the left-right direction with the inclined portion, and a pair of side holes (30) are provided on the left and right of the central hole so as to straddle the main body and the inclined portion, and side recesses (32) recessed toward the back side are provided at the edges of the side holes on the front side of the inclined portion. With this configuration, hooks or the like can be engaged with a support member having a central hole, side holes, and side recesses, so there is no need to provide protrusions or the like on the frame for engaging hooks or the like, and the frame can be made smaller and lighter. In order to solve the above problems, one aspect of the present invention is a vehicle seat (1) having a seat cushion (2) and a seat back (3), comprising a frame-shaped frame (7) provided on at least one of the seat cushion and the seat back, a plate-shaped main body (20) provided within the frame and extending approximately parallel to the frame, a pair of left and right inclined portions (21) extending outward at an angle toward the front from at least a portion of the left and right side edges of the main body, a support member (8) for supporting an occupant, and a clip (37) for fixing another member to the back side of the inclined portions, wherein a cylindrical portion (34) is formed in the inclined portion and protrudes toward the back side approximately perpendicular to the main body, and an attachment hole (35) for inserting the clip is formed within the interior space of the cylindrical portion. The main body may include a portion offset from the inclined portion in a vertical direction perpendicular to the left-right direction, i.e., along the plate-shaped main body, and the left and right side edges of the support member may have side notches (49) recessed inward in the left-right direction between the main body and the inclined portion. The inclined portion may be formed from resin with a metal wire (24) insert-molded, and the wire may have a hole-circular wire (24g) surrounding the mounting hole. Here, the "hole-circular wire" may be a single wire arranged in a ring shape, or two or more wires working together to form a ring shape. The vehicle seat (1) preferably further includes a pad (9) arranged on the front side of the frame and the support member, a cover material (10) covering the pad, a headrest (4), and a pair of left and right slide rails (6, 6) fixed to a floor (5) on which the vehicle seat is to be placed and supporting the seat cushion so that it can slide back and forth, the slide rails preferably including lower rails (11) connected to the floor, upper rails (12) supported on the lower rails so that they can slide back and forth, and a rail cover (13) covering at least a portion of the upper rails. The frame preferably is provided on the seat cushion, the inclined portion preferably being rearward of the side cutouts, and the main body preferably includes a front portion (50) located forward of the side cutouts, the front portion preferably having a shape (50a) that is lower in front than in rear in a side view.

[0006] According to this configuration, the mounting hole is surrounded by the hole-annular wire, so that it is possible to compensate for the reduction in strength of the inclined portion caused by providing the mounting hole.

[0007] At least some embodiments of the present invention are characterized in that, in the above configuration, a lattice-shaped reinforcement portion (39) consisting of ribs (40, 41) arranged in a lattice pattern is provided on the back side of the inclined portion, and the tubular portion is provided within the lattice-shaped reinforcement portion.

[0008] According to this configuration, the grid-shaped reinforcing portion can compensate for the reduction in strength of the inclined portion caused by providing the mounting holes.

[0009] At least some embodiments of the present invention are characterized in that, in the above-described configuration, at least some of the ribs of the lattice-shaped reinforcing portion intersect the hole-circumferential wire at a right angle.

[0010] According to this configuration, the wire and the rib reinforce the area around the mounting hole in different directions, thereby improving the rigidity around the mounting hole.

[0011] At least some embodiments of the present invention are characterized in that in any of the above configurations having a lattice-shaped reinforcing portion, the tubular portion is connected to a part of the rib.

[0012] According to this configuration, the cylindrical portion is connected to the rib, which can further compensate for the reduction in strength of the inclined portion caused by providing the mounting hole.

[0013] At least some embodiments of the present invention are characterized in that, in the above configuration, the ribs have vertical ribs (40) extending in the vertical direction and horizontal ribs (41) extending in the horizontal direction, the tubular portion has a rectangular bottom wall (34a) having a through hole and sides in the extension direction of the ribs arranged in a lattice in a planar view, and side walls (34b) erected from the sides of the bottom wall, and at least a portion of the vertical ribs are connected to the tubular portion between the outer surface of the side wall extending in the vertical direction and the inner surface near the side wall at the through hole.

[0014] With this configuration, the side walls extending vertically of the tubular portion and the vertical ribs are only slightly misaligned horizontally from each other, so that the two essentially form a single wall, improving the relative strength of the tubular portion and the vertical ribs.

[0015] At least some embodiments of the present invention are characterized in that, in the above configuration, at least a portion of the transverse rib is connected to the tubular portion, and the lower edge of the portion of the transverse rib that is located laterally inward from the tubular portion is located below the lower end of the tubular portion.

[0016] According to this configuration, the lower edge of the horizontal rib connected to the inside of the cylindrical portion is positioned lower than the lower end of the cylindrical portion, so that the cylindrical portion is reinforced over its entire length in the vertical direction.

[0017] At least some embodiments of the present invention are characterized in that in any of the above configurations having vertical ribs and horizontal ribs, the wire has a rib wire contained within the horizontal rib connected laterally inwardly to the tubular portion.

[0018] According to this configuration, the rigidity of the horizontal ribs connected to the lateral inner side of the cylindrical portion by the rib wire is improved, thereby reinforcing the cylindrical portion.

[0019] In at least some embodiments of the present invention, in the above configuration, the rib wire extends along the lower end of the transverse rib that contains the rib wire.

[0020] According to this configuration, the rib wire is arranged along the lower end of the transverse rib, thereby reinforcing the lower edge of the transverse rib, thereby further reinforcing the tubular portion.

[0021] At least some embodiments of the present invention are characterized in that, in the above configuration, the rib wire is positioned at the same height as or lower than the lower end of the cylindrical portion.

[0022] With this configuration, the rib wire is positioned at the bottom, so that the rigidity of the portion that receives the most load when the clip is attached to the attachment hole can be reinforced by the rib wire at the same height. [Effects of the Invention]

[0023] The present invention provides a vehicle seat (1) having a seat cushion (2) and a seat back (3), the vehicle seat (1) comprising: a frame (7) provided on at least one of the seat cushion and the seat back; a plate-shaped main body (20) provided within the frame and extending substantially parallel to the frame; a pair of left and right inclined portions (21) extending outward at an angle toward the front side from at least a portion of the left and right side edges of the main body; a support member (8) for supporting an occupant; pads (9) arranged on the front side of the frame and the support member; and a cover material (10) covering the pad; the support member is formed of resin into which linear members (24) are insert-molded; a central hole (29) is provided in the center in the left-right direction of a portion of the main body that is aligned with the inclined portions in the left-right direction; a pair of side holes (30) provided on the left and right of the central hole so as to straddle the main body and the inclined portions; and side recesses (32) recessed toward the back side are provided at the edges of the side holes on the front side of the inclined portions. With this configuration, hooks or the like can be engaged with a support member having a central hole, side holes, and side recesses, so there is no need to provide protrusions or the like on the frame for engaging hooks or the like, and the frame can be made smaller and lighter. According to one aspect of the present invention, the mounting hole is surrounded by the hole-circular wire, so that the reduction in strength of the inclined portion caused by providing the mounting hole can be compensated for.

[0024] In at least some embodiments of the present invention, in the above-described configuration, the grid-shaped reinforcing portion can compensate for the reduction in strength of the inclined portion caused by providing the mounting holes.

[0025] In at least some embodiments of the present invention, in the above configuration, the wire and the rib reinforce the area around the mounting hole in different directions, thereby improving the rigidity around the mounting hole.

[0026] In at least some embodiments of the present invention, in any of the above configurations having a lattice-shaped reinforcement portion, the cylindrical portion is connected to the rib, which can further compensate for the reduction in strength of the inclined portion caused by the provision of the mounting holes.

[0027] In at least some embodiments of the present invention, in the above configuration, the side walls extending vertically of the tubular portion and the vertical ribs have a small lateral offset from each other, so that the two essentially form a single wall, thereby improving the relative strength of the tubular portion and the vertical ribs.

[0028] In at least some embodiments of the present invention, in the above configuration, the lower edge of the cross rib connected to the inside of the tubular portion is located below the lower end of the tubular portion, so that the tubular portion is reinforced throughout the entire vertical direction.

[0029] In at least some embodiments of the present invention, in any of the above configurations having vertical ribs and horizontal ribs, the rigidity of the horizontal ribs connected laterally inward to the tubular portion by rib wires is improved, thereby reinforcing the tubular portion.

[0030] In at least some embodiments of the present invention, in the above configuration, the rib wire is arranged along the lower ends of the transverse ribs, thereby reinforcing the lower edges of the transverse ribs and thereby further reinforcing the tubular portion.

[0031] In at least some embodiments of the present invention, in the above configuration, the rib wire is positioned at the bottom, so that the rigidity of the part that is most heavily loaded when the clip is attached to the mounting hole can be reinforced by the rib wire at the same height. [Brief explanation of the drawings]

[0032] [Figure 1] 1 is a side view of a seat according to an embodiment; [Figure 2] 1 is a perspective view of a frame and a support member according to an embodiment; [Figure 3] FIG. 1 is a longitudinal cross-sectional view seen from the rear side passing through the inclined portion and the cylindrical portion around the cover member according to the embodiment (the pad is not shown). [Figure 4] FIG. 1 is an enlarged plan view of a side portion of a support member and a side frame according to an embodiment; [Figure 5] 1A and 1B are diagrams showing engagement of a skin material with a support member according to an embodiment (A: plan view, B: cross-sectional view, C: cross-sectional view according to a modified example); [Figure 6] FIG. 10 is an enlarged perspective view of an inclined portion according to an embodiment (illustration of a cover member is omitted); [Figure 7] 1 is a rear view of the periphery of an inclined portion according to an embodiment; [Figure 8] FIG. 1 is a perspective view of a frame and a support member from the right rear according to an embodiment; [Figure 9] FIG. 1 is a rear view of a pad in a seat back according to an embodiment; [Figure 10] FIG. 1 is a perspective view of a side frame of a seat back according to an embodiment, seen from the front inner side; [Figure 11] 10 is a bottom view of an inclined portion according to a modified example. DETAILED DESCRIPTION OF THE INVENTION

[0033] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that front-rear, left-right, and up-down directions correspond to front-rear, left-right, and up-down directions of a vehicle.

[0034] As shown in Figure 1, seat 1 is used as a driver's seat or passenger seat in a vehicle and includes a seat cushion 2, a seat back 3, and a headrest 4. The seat cushion 2 is supported by a pair of left and right slide rails 6, 6 fixed to the floor 5 of the vehicle interior so as to be slidable back and forth. The seat 1 also includes a flexible pad 9 made of urethane foam or the like that is arranged on a frame 7 and a support member 8 (see Figure 2), and a cover material 10 that covers the pad 9. The slide rail 6 includes a lower rail 11 connected to the floor 5, an upper rail 12 that is supported on the lower rail 11 so as to be slidable back and forth, and a rail cover 13 (see Figure 3) that covers at least a portion of the upper rail 12.

[0035] As shown in FIG. 2, the seat cushion 2 has a frame-shaped frame 7 and a support member 8 that is supported by the frame 7 so as to be positioned within the frame 7 and that resiliently supports the weight of the occupant on the seat 1 via a cover material 10 and a pad 9 (see FIG. 1).

[0036] The frame 7 includes a pair of left and right side members 14, 14; a front cross member 15 connecting the front ends of the pair of left and right side members 14, 14; a rear cross member 16 connecting the rear ends of the pair of left and right side members 14, 14; and a pan frame 17 connected to the front ends of the pair of left and right side members 14, 14, with its left and right intermediate portions positioned forward of the front cross member 15. The pair of left and right side members 14, 14 are elongated members made of sheet metal and have flanges formed on the top and bottom. The side members 14 are supported on the upper rail 12 via a base member 65 (see Figure 3). The front cross member 15 and the rear cross member 16 are made of metal pipes extending in the left-right direction. The pan frame 17 is made of sheet metal and has a surface that roughly conforms to the front portion of the seat cushion. As shown in Figure 4, a position sensor 19 is attached to the right side member 14 to detect the fore-and-aft position of the seat 1 relative to the floor 5.

[0037] 2, the support member 8 has a plate-shaped main body 20 extending substantially parallel to the frame 7, inclined portions 21 extending outward from the left and right side edges at the rear of the main body 20 at an angle toward the front, a front mounting portion 22 extending forward from the front edge of the main body 20 and engaging with the front cross member 15, and a rear mounting portion 23 extending diagonally upward and rearward from the rear edge of the main body 20 and engaging with the rear cross member 16. The support member 8 is formed from resin into which a metal wire 24 is insert-molded, and flexes when subjected to the weight of the occupant to resiliently support the occupant.

[0038] A sensor mounting portion 26 on which a pressure sensor 25 is mounted is formed on the front side of the center portion in the left-right direction of the front part 50 of the main body 20. The pressure sensor 25 detects the pressure acting on the seat cushion 2 to determine whether or not an occupant is seated in the seat 1. At the rear part of the main body 20, the inclined portion 21 distributes the weight of the occupant, so that the pressure applied when seated is small. Therefore, the pressure sensor 25 is disposed at a position offset forward from the inclined portion 21 so as not to be affected by the pressure distribution by the inclined portion 21. This improves the accuracy of the seating determination by an occupancy determination means (not shown), such as an ECU, that receives a signal from the pressure sensor 25.

[0039] The sheet 1 (see FIG. 1) employs an air ventilation system that adjusts humidity by sucking or blowing air onto the surface of the sheet 1, and a pair of air openings 27, 27 that penetrate vertically to serve as air passages are provided on the left and right sides of the sensor mounting portion 26 in the main body 20. Each air opening 27 has a rectangular shape in a plan view. A central vertical wire 24a for reinforcement, which runs vertically, is embedded in the resin portion of the sensor mounting portion 26 sandwiched between the pair of air openings 27, 27.

[0040] The rear of the main body 20 is provided with a central locking hole 29 located in the center in the left-right direction and a pair of side locking holes 30, 30 located on the left and right of the central locking hole 29. These through-holes engage with multiple hooks 28 (see FIG. 5) attached to the end of the upholstery material 10 and adjust the flexure of the support member 8. The side locking holes 30 may be provided so as to straddle the main body 20 and the inclined portion 21. The central locking hole 29 and the pair of side locking holes 30, 30 each have a rectangular shape in a plan view. The central locking hole 29 and the pair of side locking holes 30, 30, which are aligned left-right, have the same width in the front-to-back direction, but the central locking hole 29 is longer in the left-to-right direction than the pair of side locking holes 30, 30. This increases the flexibility of the center of the support member 8, resulting in a softer sitting experience. By making the length of the central locking hole 29 and the length of the pair of side locking holes 30, 30 different from each other in this way, the flexure of the support member 8 is set to improve seating comfort. Furthermore, the central vertical wire 24a runs vertically through the center of the central locking hole 29 in the left-right direction, reinforcing the strength around the central locking hole 29. As shown in FIG. 5(A), the hook 28 engaged with the central locking hole 29 has a slot 31 that receives the central vertical wire 24a, thereby strengthening the engagement of the hook 28 with the central locking hole 29. Furthermore, due to the slot 31, the hook 28 engaged with the central locking hole 29 has a different shape and is wider than the hook 28 engaged with the side locking hole 30. By changing the shape and size of the hook 28 according to the shape and size of the locking hole to be engaged, it is possible to prevent an operator from assembling the hook 28 into the wrong locking hole. Workability is improved because the central locking hole 29 and the pair of side locking holes 30, 30 are spaced apart from the rear mounting portion 23. Because the cover material 10 can be locked to the support member 8, there is no need to provide the frame 7 with protrusions or the like to form locking portions, allowing the frame 7 to be made smaller and lighter.

[0041] 2 and 5, the rear edges of the central locking hole 29 and the pair of side locking holes 30, 30 on the front side of the main body 20 are provided with hook recesses 32 that are recessed toward the back side. The hook 28 passes through the corresponding central locking hole 29 or side locking hole 30 from the back side to the front side, and the tip of the hook 28 is received in the hook recess 32. By receiving the tip of the hook 28 in the hook recess 32, the hook 28 can be positioned with respect to the central locking hole 29 and the side locking hole 30. In addition to or instead of the hook recess 32, as shown in FIG. 5(C), a hook edge wall 33 that protrudes toward the front side may be provided on the rear edge of the front side of the central locking hole 29 to lock the tip of the hook 28 (the same applies to the front edge of the side locking hole 30). The tip of the hook 28 engages with the hook edge wall 33, thereby preventing the hook 28 from falling off from the central locking hole 29 and the side locking hole 30. Furthermore, the central locking hole 29 and the side locking hole 30 are provided in positions aligned with the pair of left and right inclined portions 21, 21 of the main body 20, i.e., in positions with relatively high rigidity, so deformation of the central locking hole 29 and the side locking hole 30 can be suppressed, and the hook 28 can be prevented from falling off from the central locking hole 29 and the side locking hole 30.

[0042] As shown in FIGS. 2, 3, and 6 to 8, the inclined portion 21 is formed with a cylindrical portion 34 that protrudes downward (facing backward in a direction perpendicular to the main body 20). A clip 37 for attaching another member to the support member 8 is inserted into an attachment hole 35 formed from the inner space of the cylindrical portion 34. A shoulder surface 38 is formed on the inner peripheral surface of the cylindrical portion 34 to increase the rigidity of the cylindrical portion 34 and to engage the tip of the clip 37. For example, the cylindrical portion 34 is composed of a bottom wall 34a that has a through hole for inserting the clip 37 and is rectangular in plan view, and a side wall 34b that stands upward from a side portion of the bottom wall 34a. The upper surface of the bottom wall 34a forms the shoulder surface 38. Because the lower end of the tubular portion 34 is located substantially flush with the rear surface of the main body 20 and the extension direction of the mounting hole 35 is perpendicular to the main body 20, the clip 37 can be attached to the inclined portion 21 from the rear surface side in the same manner as the clip 37 is attached to the main body 20. In other words, the clip 37 can be attached to the tubular portion 34 more easily than when the clip 37 is attached at an angle. Furthermore, the shoulder surface 38 prevents the tip of the clip 37 from protruding from the surface of the inclined portion 21, preventing the clip 37 from affecting seating comfort. The positions of the central locking hole 29 and the pair of side locking holes 30, 30 in the front-rear direction are offset from the hanging position 10a of the cover material 10 provided on the pad 9. Furthermore, when the cover material 10 is also fixed to the side member 14, the fixing position is offset from the front-rear direction with respect to the inclined portion 21.

[0043] A lattice-shaped reinforcement portion 39 is provided on the back surface of the inclined portion 21. The lattice-shaped reinforcement portion 39 has multiple vertical ribs 40 that protrude downward and extend in the front-to-rear direction, and multiple horizontal ribs 41 that protrude downward and extend laterally along the inclined portion. The lattice-shaped reinforcement portion 39 improves the rigidity of the inclined portion 21, thereby suppressing deformation of the inclined portion 21 and stabilizing the position of the support member 8 relative to the frame 7. The tubular portion 34 is disposed within the lattice-shaped reinforcement portion 39. To compensate for the reduction in rigidity caused by the provision of the mounting holes 35, it is preferable that some of the vertical ribs 40 and / or horizontal ribs 41 are connected to the tubular portion 34. The lower edge of the portion of the horizontal rib 41 connected to the tubular portion 34 that is located laterally inward of the tubular portion 34 is located at the same height as or lower than the lower end of the tubular portion 34. This portion of the horizontal rib 41 improves the rigidity of the entire vertical length of the tubular portion 34. This portion of the horizontal rib 41 may also contain the rib wire 24f. The rib wire 24f is preferably positioned at the same height as the lower end of the tubular portion 34 or lower than the lower end of the tubular portion 34. The central locking hole 29 and the side locking holes 30 are laterally disposed with the tubular portion 34 reinforced by the vertical ribs 40 and horizontal ribs 41, which also improves the rigidity around the central locking hole 29 and the side locking holes 30. 11, a hole-annular wire 24g may be disposed so as to surround the cylindrical portion 34 in order to increase the rigidity of the inclined portion 21. In this case, it is preferable that the wire 24 be disposed so as to intersect with the vertical ribs 40 and the horizontal ribs 41.

[0044] As shown in FIG. 4 , side notches 49 are formed on the left and right side edges of the support member 8 between the main body 20 and the inclined portion 21 provided at the rear. The position sensor 19 attached to the side member 14 is located within the front-rear position of the side notch 49. By providing the side notch 49, the support member 8 can be made smaller and lighter, and the attachment state of the position sensor 19 can be easily confirmed. The side notch 49 may be provided only on the side of the left and right side edges of the support member 8 where the position sensor 19 is provided. Note that, except for the fact that the position sensor 19 is provided only on one of the left and right sides, the frame 7 and the support member 8 are approximately mirror-symmetrical with respect to a central plane perpendicular to the left-right direction.

[0045] Because the inclined portion 21 is not provided in front of the side cutout 49, the side edges of the main body 20 become the side edges of the support member 8 at the front portion 50 of the support member 8. The front-to-rear length of the front portion 50 is shorter than the front-to-rear length of the inclined portion 21, and the left-to-right outer edges of the front portion 50 are located inward relative to the left-to-right outer edges of the inclined portion 21. This reduces the load on the front portion and distributes the load on the rear portion laterally, improving the overall strength of the support member. Furthermore, the front portion 50 of the main body 20 has a crank shape 50a that is lower at the front than at the rear in a side view, thereby compensating for the reduced rigidity caused by the side cutout 49. Because the crank shape 50a is lower at the front than at the rear, the load on the occupant's legs is reduced. Furthermore, when attaching another component to the backside of the lowered portion of the crank shape 50a, the higher portion of the crank shape 50a mitigates the effect of the tip of a clip (not shown) protruding from the front side, thereby suppressing a decrease in seating comfort. Furthermore, even if the front side is lowered, the rear side supports the occupant's buttocks, so the crank shape 50a has little effect on supporting the buttocks, preventing a decrease in seating comfort. Furthermore, the left and right outer portions of the main body 20 near the pair of left and right air openings 27, 27 each have a bent portion 51 that is bent in a front view to connect to the portion of the front portion 50 of the main body 20 that is lowered by the crank shape 50a. The bent portion 51 extends from near the air opening 27 to near the front edge of the main body 20. The bent portion 51 compensates for the reduced rigidity caused by the pair of left and right air openings 27, 27. The crank shape 50a, the bent portion 51, and the front wall portion 50b extending outward in the left-right direction from the front end of the bent portion 51 define recesses 50c on the front side of both left and right sides of the front portion 50. The recesses 50c improve the rigidity around the recesses 50c, thereby improving the attachment stability of the front mounting portions 22 located on both left and right sides to the front cross member 15. Ribs 50d extending in the front-rear and left-right directions may be provided on the surface of the recess 50c.

[0046] As shown in FIGS. 3 and 4 , to increase the rigidity of the left and right side edges of the support member 8, flanges 53 protruding toward the front side are provided on the side edges of the front portion 50 of the main body 20, and flanges 54 protruding toward the back side are provided on the side edges of the inclined portion 21. The flanges 53 are continuous at least over the longitudinal range in which the bent portion 51 extends. To increase rigidity, the rear end of the flanges 53 may extend to the portion of the inclined portion 21 where the side notches 49 are formed. When a clip (not shown) is attached to a hole 55 provided near the front side edge of the main body 20, the tip of the clip protrudes toward the front side of the main body 20. The flanges 53 protruding toward the front side mitigate the impact of the protruding tip of the clip on seating comfort. Meanwhile, because the mounting hole 35 of the inclined portion 21 has a shoulder surface 38, the tip of the clip 37 attached to the mounting hole 35 does not protrude toward the front side of the inclined portion. Therefore, the flanges 54 of the inclined portion protrude toward the back side to avoid affecting seating comfort.

[0047] As shown in Fig. 2, some of the wires 24 embedded in the resin constituting the support member 8 extend in the left-right direction (lateral direction), each of which increases the rigidity of the surrounding area of ​​the support member. A front horizontal wire 24c is disposed in front of the pair of left and right air openings 27, 27 and generally along the front edge of the main body 20. A central horizontal wire 24d is disposed between the pair of left and right air openings 27, 27 and the central locking hole 29 and the pair of left and right side locking holes 30, 30. A rear horizontal wire 24e is disposed behind the central locking hole 29 and the pair of left and right side locking holes 30, 30 and generally along the rear edge of the main body 20. A portion of the central horizontal wire 24d is disposed along the front edges of the central locking hole 29 and the pair of left and right side locking holes 30, 30.

[0048] The front mounting portion 22 engages with the front cross member 15 from above and has three front mounting pieces 56 that are separated from one another to make attachment easier. Similarly, the rear mounting portion 23 engages with the rear cross member 16 from above and has three rear mounting pieces 57 that are separated from one another to make attachment easier. Both ends of the central vertical wire 24a and the side vertical wires 24b are embedded in the corresponding front mounting pieces 56 and rear mounting pieces 57, respectively, to reinforce the front mounting portion 22 and the rear mounting portion 23.

[0049] A front notch 58 is provided in a portion of the front edge of the main body 20 that is not connected to the front mounting piece 56. The width of the front notch 58 in the left-right direction is smaller than the distance between two adjacent front mounting pieces 56, 56 connected to the front edge of the main body 20. Therefore, the outline of the space defined by the front edge of the main body 20 and the two adjacent front mounting pieces 56, 56 is convex in plan view. The provision of the front notch 58 allows the portion of the main body 20 from near the front edge to the front mounting piece 56 to be significantly flexible, facilitating the attachment of the front mounting piece 56 to the front cross member 15. Furthermore, because the width of the front notch 58 is smaller than the distance between the two adjacent front mounting pieces 56, the provision of the front notch 58 prevents a decrease in seating comfort. A connecting portion 59 for embedding the central vertical wire 24a is provided between the sensor mounting portion 26 and the central front mounting piece 56. Although the rigidity of the front part of the main body 20 near the center in the left-right direction is reduced due to the provision of the air opening 27 and the front cutout 58, the necessary rigidity is ensured by the connecting part 59. The front mounting piece 56 is hook-shaped and extends generally forward from the main body 20, and the rear mounting piece 57 is also hook-shaped and extends diagonally upward and rearward from the rear edge of the main body 20.

[0050] The front horizontal wire 24c is bent because it is arranged along the front edge of the main body 20 and to avoid the front notch 58. In addition, both left and right ends of the front horizontal wire 24c extend forward, outward in the left-right direction from the bent portion 51, and along the flange 53, thereby reinforcing the front corners of the main body 20 without increasing the size of the support member 8.

[0051] The pad 9 (see FIG. 5) is preferably also disposed on the front mounting piece 56 (see FIG. 2) of the support member 8. In this case, the weight of the occupant is applied to the front mounting piece 56 via the pad, which increases the engagement strength of the front mounting piece 56 that engages with the front cross member 15 (see FIG. 2) from above.

[0052] 5(B) and (C), a hook receiving portion 66 recessed upward is formed in the portion of the pad 9 facing the hook 28. The hook receiving portion 66 makes it possible to avoid interference between the pad 9 and the hook 28, and facilitates the work of attaching the hook 28 to the central locking hole 29 and the side locking hole 30. Note that, in order to prevent the hook 28 from falling off, the portion of the pad 9 facing the hook 28 may be pressed against the hook 28 instead of the hook receiving portion 66.

[0053] FIG. 9 is a rear view of the pad 101 in the seat back 3 (see FIG. 1), and FIG. 10 is a perspective view of the side frame 102 of the seat back 3 as viewed from the front inside. To improve workability, among the upholstery fixing members 103 for fixing the upholstery material 10 (see FIG. 1), those provided on the upper end side of the upholstery material 10 are preferably fixed above the airbag 104 attached to the side frame 102, and the attachment position 105 of the other member is preferably spaced apart vertically, horizontally, or frontward and rearward from the webbing clip attachment position 106 of the airbag 104. When the other member is attached to the side frame 102, it is preferable that the pad 101 be placed between the other member and the upholstery fixing member 103 so that the upholstery fixing member 103 does not come off. It is also preferable that the other member be attached near a portion of the side frame 102 where shallow irregularities are provided in the plate-shaped main body portion to improve rigidity. Furthermore, when a bracket (not shown) for supporting another component is provided on the side frame 102, it is preferable to install the bracket at an angle to avoid a cross member (not shown) in order to contribute to miniaturization while suppressing the dislocation of the other component. To improve rigidity, the skin fixing member 103 is preferably provided at a position where the side frame 102 and the lower frame (not shown) overlap or are welded to each other. When another component is fixed to the side frame 102, in order to improve rigidity, the attachment position 105 of the other component is preferably near a bead 107 facing the airbag 104 and avoids the module holder 108, and is preferably offset from the attachment position 105 of the other component in a front view. To improve rigidity, the attachment position of the airbag 104 is preferably on an extension of the bead 107. Furthermore, to improve workability, it is preferable that the attachment position of the module holder 108 avoids a flange 109 of the side frame 102 in a side view.

[0054] The pad 101 has a main portion 101a disposed on the front side, and end portions 101b disposed on the back side so as to overlap the top and left and right side portions of the main portion 101a and wrap around an upper frame (not shown) and side frames 102 in cooperation with the main portion 101a. The main portion 101a is provided with a hanging hole 110 for hanging the covering material 10 (see FIG. 1). The end portions 101b are provided with cutouts 111 extending from the inside to the outside at the joints between the top and the left and right side portions. A through-hole 112 is provided in the side portion of the main portion 101a, and is located flush with the module holder 108 attached to the side frame 102. The through-hole 112 is located at a position that avoids wires 114 that hold support members 113.

[0055] Although the description of the specific embodiment has been completed, the present invention is not limited to the above embodiment and can be widely modified. The end of the cover material may be a fastening portion with another structure, such as a clip, instead of a hook. Some of the ribs may be omitted to increase the deflection of the member. The configurations of the above embodiment and modified embodiment may be applied to seat backs, or to seats in vehicles other than automobiles, such as airplanes. [Explanation of symbols]

[0056] 1: Sheet 2: Seat cushion 3: Seat back 7: Frame 8: Support member 9: Pad 10:Skin material 20:Main body 21: Inclined part 24: Wire 24f: Rib wire 24g: Hole circular wire 34: Cylindrical part 34a: Bottom wall 34b: Side wall 35: Mounting hole 37: Clip 39: Lattice reinforcement section 40:Vertical rib 41: Horizontal rib

Claims

1. A vehicle seat having a seat cushion and a seat back, a frame provided on at least one of the seat cushion and the seat back; a support member provided within the frame and configured to support an occupant, the support member having a plate-shaped main body extending substantially parallel to the frame and a pair of left and right inclined portions extending outward from at least a portion of the left and right side edges of the main body while inclining toward the front side; a pad disposed on the front side of the frame and the support member; a skin material covering the pad; a plurality of hooks attached to an end of the skin material; the support member is formed of a resin into which a linear member is insert-molded, a central hole is provided at the center in the left-right direction of a portion of the main body that is aligned with the inclined portion in the left-right direction, a pair of side holes are provided on the left and right of the central hole so as to straddle the main body and the inclined portion; a side recess recessed toward a rear side is provided at an edge of the side hole on the front side of the inclined portion, At least one of the plurality of hooks passes through the side hole from the back side to the front side, and a tip end of the hook is received in the side recess, thereby being engaged with the support member; The vehicle seat is characterized in that the pad has a hook receiving portion that receives the tip of the at least one of the plurality of hooks, or that presses against the at least one of the plurality of hooks.

2. 2. The vehicle seat according to claim 1, wherein a central recess is provided on the edge of the central hole on the front side of the main body, the central recess being recessed toward the back side.

3. the frame, the support member, the pad, and the cover material are provided on the seat cushion, the side recesses are provided rearward relative to the side holes, and the central recess is provided rearward relative to the central hole; 3. The vehicle seat according to claim 2, wherein at least one other of the plurality of hooks is engaged with the support member by passing through the central hole from the back side to the front side and having its tip received in the central recess.

4. 4. The vehicle seat according to claim 3, wherein hook edge walls protruding toward the front side are provided at front edges of the side recesses and the central recess.

5. 5. The vehicle seat according to claim 3, wherein the hook receiving portion is formed in an upward recess in the portion of the pad facing the pair of side holes, and the central hook receiving portion is formed in an upward recess in the portion of the pad facing the central hole.

6. 6. The vehicle seat according to claim 1, wherein the central hole and the pair of side holes each have a rectangular shape when viewed from the front and back.

7. 7. The vehicle seat according to claim 1, wherein a portion of the linear member extends vertically through the central hole.

8. The vehicle seat according to any one of claims 1 to 7, characterized in that the inclined portion is formed with a cylindrical portion that protrudes toward the back side and is approximately perpendicular to the main body.

9. a lattice-shaped reinforcing portion made of ribs arranged in a lattice pattern is provided on the back side of the inclined portion, 9. The vehicle seat according to claim 8, wherein the cylindrical portion is provided within the lattice-shaped reinforcing portion.

10. A headrest and a pair of left and right slide rails fixed to a floor on which the vehicle seat is to be installed and supporting the seat cushion so that the seat cushion can slide forward and backward; The slide rail includes a lower rail connected to the floor, an upper rail supported on the lower rail so as to be slidable forward and backward, and 10. The vehicle seat according to claim 1, further comprising a rail cover that covers at least a portion of the upper rail.

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