JP7202203B2 - vehicle seat - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle seat, and more particularly to a vehicle seat provided with a support member provided inside a frame to support an occupant.

2. Description of the Related Art A vehicle seat is known in which a support member that is provided inside a seat cushion frame and supports an occupant is formed of a plate-like resin member (see, for example, Patent Document 1). The support member has slanted portions that slant upward and extend outward from the left and right side edges of the rear portion of the main body.

Patent No. 6309130

In a supporting member having inclined portions on the left and right sides, stress may be concentrated on the inclined portions depending on how the person sits, and it has been required to reinforce the inclined portions. SUMMARY OF THE INVENTION In view of such a background, an object of the present invention is to provide a vehicle seat in which the strength of an inclined portion is reinforced.

To solve the above problem, at least some embodiments of the present invention provide a vehicle seat (1) having a seat cushion (2) and a seat back (3), wherein the seat cushion and the seat back are It has a frame-shaped frame (7) provided on at least one side, and a support member (8) supported by the frame so as to be positioned in the frame and supporting an occupant. It has a side member (14) and cross members (15, 16) connecting corresponding ends of the side members, and the left and right side members are provided with covers covering at least a part of the side faces facing each other. A member (60) is provided, and the support member includes a plate-like main body (20) extending substantially parallel to the frame, and inclined portions (21) extending outward from left and right side edges of the main body. ), the left and right inclined portions abut on the corresponding left and right cover members, and the connection portion between the main body and the inclined portions includes a connecting recess (47) recessed on the surface side. , and a connecting rib (48) arranged in the connecting recess (46).

According to this configuration, the connection reinforcing portion can reinforce the strength of the connecting portion between the inclined portion and the main body. Further, by adjusting the size of the connecting recess and the orientation, thickness, number, etc. of the connecting ribs, it is possible to design the support member so that the slanted portion can be easily bent with respect to the main body to a desired degree.

At least some embodiments of the present invention are characterized in that, in the above configuration, the inclined portion has a mounting hole for mounting a clip.

According to this configuration, a member such as a wire harness can be attached to the inclined portion via the clip.

At least some embodiments of the present invention are characterized in that, in the above configuration, at least some of the connecting ribs are arranged on lateral sides of the mounting holes. "Lateral direction" means a left-right direction, or a left-right direction inclined up and down or back and forth along the surface of the support member.

According to this configuration, the connecting rib can compensate for the strength of the portion where the strength is impaired by the mounting hole.

At least some embodiments of the present invention are characterized in that, in any of the above configurations having mounting holes, the longitudinal length of the connecting recess is longer than the longitudinal length of the mounting holes. "Longitudinal" means along the surface of the support member perpendicular to the transverse direction.

According to this configuration, it is possible to reinforce the connecting portion between the inclined portion and the main body in a range wider than the mounting hole in the vertical direction.

At least some embodiments of the present invention, in any of the above configurations having mounting holes, extend from one longitudinal edge of the ramp to the back side perpendicular to the surface of the ramp. an upright wall (43); a bottom wall (44) extending from a lower edge of the upright wall in a direction inclined toward the extended surface of the surface with respect to the one or the one of the longitudinal directions; It is characterized by the provision of longitudinal edge reinforcements (42) having reinforcing walls (45) fixed perpendicular to the bottom wall.

According to this configuration, the strength of the inclined portion is reinforced by the vertical end portion reinforcing portion, and the easiness of bending of the inclined portion can be adjusted as desired by adjusting the thickness, number, etc. of the reinforcing walls. The support member can be designed to be approximately

At least some embodiments of the present invention are characterized in that, in the above configuration, the mounting holes are positioned on extension lines in the longitudinal direction of at least a portion of the reinforcing walls.

According to this configuration, the reinforcing wall can compensate for the strength of the portion where the strength is impaired by the mounting hole.

At least some embodiments of the present invention are characterized in that in any of the above configurations having longitudinal edge reinforcements, the reinforcing walls are positioned laterally outwardly of the connecting ribs.

According to this configuration, since the longitudinal end reinforcing portion is positioned laterally outward of the connecting rib, the connecting portion between the connecting portion and the main body is excessively reinforced to prevent the supporting member from sufficiently bending. In addition to preventing this, it is possible to reinforce the outer side in the horizontal direction from the connecting portion by the vertical end reinforcing portion.

In at least some embodiments of the present invention, in any of the above configurations having longitudinal edge reinforcements, the longitudinal edge reinforcements are located on the one side of the longitudinal direction relative to the connecting reinforcements. Characterized by

According to this configuration, since the vertical end reinforcing portion is arranged with a vertical shift with respect to the connecting reinforcing portion, excessive reinforcement locally and concentration of stress on other portions can be prevented. can be prevented.

At least some embodiments of the present invention are characterized in that in any of the above configurations with longitudinal edge reinforcements, the connecting ribs are arranged at an angle to the reinforcing walls.

According to this configuration, since the connecting rib forms an angle with respect to the reinforcing wall, the connecting rib and the reinforcing wall reinforce the inclined portion in different directions.

At least some embodiments of the present invention are characterized in that, in the above construction, the connecting rib extends in the lateral direction and the reinforcing wall extends in the longitudinal direction.

According to this configuration, the inclined portion can be reinforced in the vertical and horizontal directions.

According to the present invention, the connection reinforcing portion can reinforce the strength of the connecting portion between the inclined portion and the main body. Further, by adjusting the size of the connecting recess and the orientation, thickness, number, etc. of the connecting ribs, it is possible to design the support member so that the slanted portion can be easily bent with respect to the main body to a desired degree.

In at least some embodiments of the present invention, the sloping portion has an attachment hole so that a member such as a wire harness can be attached to the sloping portion via a clip.

In at least some embodiments of the present invention, the connecting ribs are arranged laterally to the sides of the mounting holes, so that the connecting ribs can compensate for the strength of the portion where the strength is impaired by the mounting holes.

In at least some embodiments of the present invention, the vertical length of the connecting recess is longer than the vertical length of the mounting hole, so that the connecting portion between the inclined portion and the main body is wider than the mounting hole in the vertical direction. can be reinforced.

At least some embodiments of the present invention reinforce the strength of the slanted portion with the longitudinal end reinforcing portion, and adjust the thickness, number, etc., of the reinforcing walls to increase the flexibility of the slanted portion to a desired degree. The support member can be designed so that

In at least some embodiments of the present invention, the mounting holes are positioned on the longitudinal extension of at least a portion of the reinforcing wall, so that the reinforcing wall compensates for the strength of the portion where the strength is impaired by the mounting hole. can be done.

At least some embodiments of the present invention provide that the reinforcing walls are positioned laterally further than the connecting ribs to over-strengthen the connection between the connection and the body to allow sufficient deflection of the support member. In addition, the longitudinal end reinforcing portion can reinforce the laterally outward side of the connecting portion.

At least some embodiments of the present invention avoid over-reinforcing locally and stressing elsewhere due to longitudinal edge reinforcements being longitudinally offset relative to the connecting reinforcements. It prevents you from concentrating.

In at least some embodiments of the present invention, the connecting ribs are angled with respect to the reinforcing wall so that the connecting ribs and the reinforcing wall reinforce the ramp in different directions.

In at least some embodiments of the present invention, the connecting ribs extend laterally and the stiffening walls extend longitudinally, thereby stiffening the ramp in both the longitudinal and lateral directions.

Side view of the seat according to the embodiment A perspective view of a frame and supporting members according to the embodiment. Longitudinal cross-sectional view seen from the back through the inclined portion and the cylindrical portion around the cover member according to the embodiment (illustration of the pad is omitted) Enlarged plan view of support member side portion and side frame according to the embodiment Figures showing the engagement of the covering material with the supporting member according to the embodiment (A: plan view, B: cross-sectional view, C: cross-sectional view according to the modification) FIG. 2 is an enlarged perspective view of an inclined portion according to an embodiment (illustration of a cover member is omitted); Rear view of the vicinity of the inclined portion according to the embodiment FIG. 4 is a right rear perspective view of a frame and a support member according to the embodiment; Longitudinal cross-sectional view including a pad seen from the front around the inclined portion and the cover member according to the embodiment Rear view of the pad in the seat back according to the embodiment The perspective view which looked at the side frame of the seat back which concerns on embodiment from the front inside.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings. The front-rear, left-right, and up-down directions correspond to the front-rear, left-right, and up-down directions of the vehicle.

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

As shown in FIG. 2, the seat cushion 2 is supported by a frame-shaped frame 7 so as to be positioned within the frame 7, and the seat cushion 2 is seated via an upholstery material 10 and a pad 9 (see FIG. 1). and a support member 8 for resiliently supporting the load of one passenger.

The frame 7 includes a pair of left and right side members 14, 14, a front cross member 15 connecting front ends of the pair of left and right side members 14, 14, and a rear end of the pair of left and right side members 14, 14. It has a rear cross member 16 to be connected, and a pan frame 17 which is connected to the front end portions of the pair of left and right side members 14 , 14 and whose left and right intermediate portions are located forward of the front cross member 15 . The pair of left and right side members 14, 14 are long members made of sheet metal that are long in the front-rear direction, and flanges are formed on the upper and lower sides. 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 generally along the front portion of the seat surface. As shown in FIG. 4 , a position sensor 19 is attached to the right side member 14 to detect the longitudinal position of the seat 1 with respect to the floor 5 .

As shown in FIG. 2, the support member 8 includes a plate-like main body 20 that extends substantially parallel to the frame 7 and a slant that extends outward from left and right side edges of the rear portion of the main body 20 . a front attachment portion 22 that extends forward from the front edge of the main body 20 and engages the front cross member 15; and a mating rear mounting portion 23 . The support member 8 is made of resin in which a metal wire 24 is insert-molded, bends under the load of the occupant, and elastically supports the occupant.

A sensor mounting portion 26 on which the pressure sensor 25 is mounted is formed on the front side of the front portion of the main body 20 at the central portion in the left-right direction. A pressure sensor 25 detects pressure applied to the seat cushion 2 in order to determine whether or not an occupant is seated on the seat 1 . Since the load of the occupant is dispersed by the inclined portion 21, the rear portion of the main body 20 receives less pressure when the passenger is seated. Therefore, the pressure sensor 25 is arranged at a position offset forward with respect to the inclined portion 21 so as not to be affected by the pressure dispersion caused by the inclined portion 21 . Therefore, the accuracy of seating determination by a seating determination means (not shown) such as an ECU that receives a signal from the pressure sensor 25 is improved.

The seat 1 (see FIG. 1) employs an air ventilation system that sucks or blows air against the surface of the seat 1 to adjust the humidity. , a pair of air openings 27, 27 penetrating vertically are provided so as to serve as air passages. Each air opening 27 is rectangular in plan view. In the resin portion formed by the sensor mounting portion 26 sandwiched between the pair of air openings 27, 27, a center vertical wire 24a for reinforcement is embedded, passing along the vertical direction.

Further, at the rear of the main body 20, there are through holes for engaging a plurality of hooks 28 (see FIG. 5) attached to the ends of the upholstery 10 and for adjusting the bending of the support member 8. A central locking hole 29 located in the center and a pair of side locking holes 30, 30 located on the left and right sides of the central locking hole 29 are provided. The central locking hole 29 and the pair of side locking holes 30, 30 each form a rectangle in plan view. The central locking hole 29 and the pair of side locking holes 30, 30 aligned in the left-right direction have the same width in the front-rear direction, but the length in the left-right direction is equal to that of the central locking hole 29. It is longer than the side locking holes 30,30. Therefore, the flexibility of the central portion of the support member 8 is increased, resulting in a soft sitting comfort. 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 bending of the support member 8 is set so as to improve the seating comfort. In addition, the central vertical wire 24a runs vertically through the center of the central locking hole 29 in the left-right direction, thereby reinforcing the strength of the periphery of the central locking hole 29. As shown in FIG. As shown in FIG. 5A, the hook 28 to be locked in the central locking hole 29 has a slot 31 for receiving the central vertical wire 24a, so that the hook 28 engages the central locking hole 29. becomes stronger. Moreover, since the slot 31 is provided, the hook 28 engaged with the central engaging hole 29 has a different shape and is wider than the hook 28 engaged with the side engaging hole 30 . By changing the shape and size of the hook 28 according to the shape and size of the locking hole to be locked in this manner, it is possible to prevent the operator from assembling the hook 28 into the wrong locking hole. Since the central locking hole 29 and the pair of side locking holes 30, 30 are separated from the rear mounting portion 23, workability is good. Since the skin material 10 can be locked to the support member 8, there is no need to provide the frame 7 with a projecting piece or the like for forming a locking portion, and the frame 7 can be made smaller and lighter.

As shown in FIGS. 2 and 5, the central locking hole 29 and the pair of side locking holes 30, 30 on the front side of the main body 20 have hook recesses 32 recessed toward the rear side at the rear edge portions. is provided. 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 concave portion 32 . By receiving the tip of the hook 28 in the hook concave portion 32 , the hook 28 can be positioned with respect to the central locking hole 29 and the side locking holes 30 . Instead of the hook concave portion 32, as shown in FIG. The tip may be locked (the same applies to the front side edge of the side locking hole 30). By engaging the tip of the hook 28 with the hook edge wall 33 , the hook 28 is prevented from falling out of the central locking hole 29 and the side locking holes 30 . In addition, the central locking hole 29 and the side locking hole 30 are provided at positions aligned with the pair of left and right inclined portions 21, 21 in the main body 20, that is, at positions with relatively high rigidity. Deformation of 29 and side locking holes 30 can be suppressed, and dropping off of hooks 28 from central locking holes 29 and side locking holes 30 can be prevented.

As shown in FIGS. 2, 3, and 6 to 8, the inclined portion 21 is formed with a tubular portion 34 projecting downward (backward in a direction perpendicular to the main body 20). A clip 37 for attaching another member such as a linear member 36 such as a wire harness or a cable to the support member 8 is inserted through the attachment hole 35 formed by the inner space of the tube of the tubular portion 34 . The linear member 36 is arranged so as to come into surface contact with the rear reinforcing portion 42 and the rear surface of the inclined portion 21 in order to prevent deformation. Further, the linear member 36 is arranged so as to be shifted from the central locking hole 29 and the pair of side locking holes 30, 30 for the purpose of improving workability. Further, the linear member 36 preferably extends in the front-rear direction or is arranged so as to be laterally inward from the mounting hole 35 . 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 lock the tip of the clip 37 . For example, the cylindrical portion 34 includes a bottom wall 34a having a through-hole for inserting the clip 37 and having a rectangular shape in plan view, and side walls 34b extending upward from the sides of the bottom wall 34a. . The upper surface of the bottom wall 34a constitutes a shoulder surface 38. As shown in FIG. Since the lower end of the tubular portion 34 is positioned substantially on the same plane as the back surface of the main body 20, and the extending direction of the attachment hole 35 is perpendicular to the main body 20, the clip 37 can be attached to the inclined portion 21 from the back surface side. The work can be performed in the same manner as the mounting work for the main body 20 . That is, the workability of attaching the clip 37 to the tubular portion 34 is improved as compared with the case where the clip 37 is inclined and attached. Moreover, since the shoulder surface 38 is provided, the tip of the clip 37 does not protrude from the surface of the inclined portion 21, and the clip 37 can be prevented from affecting the seating comfort. Although illustration is omitted, the longitudinal positions of the central locking hole 29 and the pair of side locking holes 30 , 30 are offset from the hanging position of the upholstery material 10 provided on the pad 9 . Further, when the upholstery material 10 is fixed to the side members 14 as well, the fixing position is shifted forward and backward with respect to the inclined portion 21 . A plurality of mounting holes 35 may be provided in each inclined portion 21 for mounting a plurality of linear members 36 . In this case, by shifting the positions of the plurality of mounting holes 35 in the left-right direction and the front-rear direction, it is possible to mount a plurality of linear members 36 extending in the front-rear direction or the lateral direction, and mounting workability is improved. do.

A grid-like reinforcing portion 39 is provided on the rear surface of the inclined portion 21 . The grid-like reinforcing portion 39 has a plurality of longitudinal ribs 40 that protrude downward and extend in the front-rear direction, and a plurality of lateral ribs 41 that protrude downward and extend in the lateral direction along the inclined portion. Since the rigidity of the inclined portion 21 is improved by the grid-like reinforcing portion 39, the deformation of the inclined portion 21 can be suppressed, and the position of the support member 8 with respect to the frame 7 is fixed. The cylindrical portion 34 is arranged in a grid-like reinforcing portion 39, and some vertical ribs 40 and/or horizontal ribs 41 are connected to the cylindrical portion 34 in order to compensate for a decrease in rigidity due to the provision of the mounting holes 35. is preferred.

A rear reinforcing portion 42 for reinforcing the inclined portion 21 and adjusting the bending of the inclined portion 21 is provided at the rear edge of the inclined portion 21 . The rear reinforcing portion 42 includes an upright wall 43 extending from the rear edge of the inclined portion 21 to the back side so as to be perpendicular to the surface of the inclined portion 21, and a bottom wall 44 extending rearward or obliquely upward and rearward from the lower edge of the upright wall 43. and a plurality of reinforcing walls 45 (ribs) fixed perpendicular to the vertical wall 43 and the bottom wall 44 . In order to compensate for the decrease in rigidity due to the provision of the mounting hole 35, part of the reinforcing wall 45 is preferably positioned on the vertical extension line of the mounting hole 35 and positioned at the same height as the mounting hole 35. . In addition, the vertical ribs 40 of the lattice-like reinforcing portion 39 are connected to the vertical walls 43 so as to cross each other, so that the vertical ribs 40 and the vertical walls 43 can improve the rigidity of the inclined portion 21 against the input of loads in different directions. preferable.

A connecting reinforcing portion 46 for reinforcing the connection between the main body 20 and the inclined portion 21 is provided at the connecting portion between the main body 20 and the inclined portion 21 in front of the rear reinforcing portion 42 . The connection reinforcing portion 46 includes a connection recess 47 that extends in the vertical direction at the boundary between the main body 20 and the inclined portion 21 on the front side of the support member 8, and a connection recess 47 that is provided in the connection recess 47 and has a main surface perpendicular to the vertical direction. and a plurality of connecting ribs 48 consisting of walls. By adjusting the length and depth of the connecting recess 47, the number and thickness of the connecting ribs 48, and the like, the flexibility of the inclined portion 21 and the rigidity between the main body 20 and the inclined portion 21 are adjusted. The connecting recess 47 is formed on the side of the mounting hole 35 in the horizontal direction, and its length in the front-rear direction is preferably greater than the length in the front-rear direction of the mounting hole 35. 48 reinforces the portion where the strength is impaired by the mounting hole 35 in a wide range. The connecting rib 48 is located laterally inward of the reinforcing wall 45 of the rear reinforcing portion 42 . A side vertical wire 24b is embedded in the support member 8 along between the main body 20 and the inclined portion 21 to reinforce the space between the main body 20 and the inclined portion 21. As shown in FIG. In addition, in order to increase the rigidity of the inclined portion 21, the arrangement of the wire 24 may be changed so as to surround the cylindrical portion 34 and the connection reinforcing portion 46. FIG. In this case, the wires 24 are preferably arranged so as to intersect the vertical ribs 40 and the horizontal ribs 41, and the linear members 36 may be arranged along some sections of the wires 24 in order to improve rigidity. Preferred (not shown).

As shown in FIG. 4, side cutouts 49 are formed in 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 longitudinal position of the position sensor 19 attached to the side member 14 is within the longitudinal position of the side notch 49 . By providing the side notch 49, the support member 8 can be made smaller and lighter, and the mounting state of the position sensor 19 can be easily confirmed. The side cutouts 49 may be provided only on the sides of the left and right side edges of the support member 8 where the position sensors 19 are provided. 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 substantially mirror-symmetrical with respect to the central plane perpendicular to the left-right direction.

Since the inclined portion 21 is not provided in front of the side notch 49 , the side edge of the main body 20 serves as the side edge of the support member 8 at the front portion of the support member 8 . The front side portion 50 of the main body 20 has a crank shape in which the front side is lower than the rear side when viewed from the side, and compensates for the reduced rigidity due to the side cutouts 49 . In addition, when the linear member 36 is attached to the back side of the lowered portion of the crank shape, the influence of the tip of the clip (not shown) protruding from the front side is mitigated by the raised portion of the crank shape, resulting in a decrease in seating comfort. is suppressed. In addition, even if the front side is lowered, the rear side supports the occupant's buttocks, so the influence of the crank shape on the support of the occupant's buttocks is small, and a decrease in seating comfort is suppressed. In addition, the portions near the left and right outer sides of the pair of left and right air openings 27, 27 in the main body 20 are bending portions that are bent in a front view so as to be connected to the portions lowered by the crank shape of the front side portion 50 of the main body 20. 51. The bent portion 51 extends from the vicinity of the air opening 27 to the vicinity of the front edge of the main body 20 . The bent portion 51 compensates for the rigidity that is lowered by the pair of left and right air openings 27 , 27 .

As shown in FIGS. 3 and 4, in order to increase the rigidity of the left and right side edges of the support member 8, the side edges of the front portion of the main body 20 are provided with flanges 53 projecting to the front side. is provided with a flange 54 protruding to the rear side. When a clip (not shown) is attached to the hole 55 provided near the front side edge of the main body 20 , the tip of the clip protrudes to the front side of the main body 20 . The flange 53 protruding to the front side alleviates the influence of the protruding tip of the clip on the seating comfort. On the other hand, since the attachment hole 35 of the inclined portion 21 is provided with a shoulder surface 38, the tip of the clip 37 attached to the attachment hole 35 does not protrude to the front side of the inclined portion. Therefore, the flange 54 of the slanted portion is made to protrude to the rear side so as not to affect the seating comfort.

As shown in FIG. 2, some of the wires 24 embedded in the resin forming the support member 8 extend in the left-right direction (horizontal direction) to increase the rigidity of the periphery 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 approximately along the front edge of the main body 20, and connects the pair of left and right air openings 27, 27, the central locking hole 29 and A central horizontal wire 24d is arranged between the pair of left and right side locking holes 30, 30, and generally behind the main body 20 behind the central locking hole 29 and the pair of left and right side locking holes 30, 30. A rear transverse wire 24e is positioned along the edge. A portion of the central horizontal wire 24d is arranged along the front edges of the central locking hole 29 and the pair of left and right side locking holes 30,30. The central horizontal wire 24d may be arranged in a plurality of rows, and in this case, the central horizontal wire 24d may be configured by part of the wires 24 arranged in a ring.

The front mounting portion 22 engages the front cross member 15 from above and has three front mounting pieces 56 separated from each other for ease of mounting. Similarly, the rear mounting portion 23 engages the rear cross member 16 from above and has three rear mounting tabs 57 separated from each other for ease of mounting. Both ends of the central vertical wire 24a and the side vertical wires 24b are embedded in corresponding front mounting pieces 56 and rear mounting pieces 57, respectively, to reinforce the front mounting portion 22 and the rear mounting portion 23. As shown in FIG.

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 lateral width of the front notch 58 is smaller than the distance between two adjacent front attachment pieces 56 , 56 connected to the front edge of the main body 20 . Therefore, the contour of the space defined by the front edge of the main body 20 and the two front attachment pieces 56, 56 adjacent to each other has a convex shape in plan view. By providing the front notch 58, the portion from the front portion of the main body 20 to the front mounting piece 56 can be greatly bent, and the mounting of the front mounting piece 56 to the front cross member 15 is facilitated. . In addition, since 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 suppresses a decrease in seating comfort. A connection portion 59 is provided between the sensor mounting portion 26 and the central front mounting piece 56, in which the central vertical wire 24a is embedded. Due to the provision of the air opening 27 and the front notch 58 , the rigidity of the front portion of the main body 20 near the center in the left-right direction is reduced, but the necessary rigidity is ensured by the connecting portion 59 . The front attachment piece 56 has a hook shape extending generally forward from the main body 20 , and the rear attachment piece 57 has a hook shape extending obliquely upward and rearward from the rear edge of the main body 20 .

The front transverse wire 24c is bent because it is positioned along the front edge of the body 20 and to avoid the front notch 58. As shown in FIG. In addition, the left and right ends of the front horizontal wire 24c extend forward, extend outward in the left-right direction from the bent portion 51, and extend along the flange 53, thereby increasing the size of the support member 8. The corners on the front side of the body 20 are reinforced.

As shown in FIGS. 2 and 3, a cover member 60 is attached to the side member 14 of the frame 7 . The cover member 60 covers the inner side and upper portion in the left-right direction of the rear portion of the side member 14 . The cover member 60 is made of resin. The side walls 61 forming the left and right inner sides of the cover member 60 are inclined such that the lower sides face inward in the left and right direction. The side edge of the inclined portion 21 contacts the surface of the side wall 61 . The side edge of the inclined portion 21 is configured to make line contact with the surface of the side wall 61 for reliable contact. In order to reduce the frictional force between the side edge of the inclined portion 21 and the surface of the side wall 61 to facilitate assembly, the surface of the side wall 61 has a flat portion 62 in the vicinity of the portion where the side edge of the inclined portion 21 abuts. , and the side edge of the inclined portion 21 is rounded when viewed in longitudinal section. The front and rear ends of the side walls 61 are preferably positioned forward and rearward of the front and rear ends of the side edges of the inclined portion 21, respectively. In order to reduce rubbing between the inclined portion 21 and the side wall 61 , the thickness of the side wall 61 is preferably thinner than the thickness of the inclined portion 21 . By bringing the side edge of the inclined portion 21 into contact with the surface of the side wall 61 of the cover member 60, the support member 8 can be positioned in the left-right direction with respect to the frame 7. The support member 8 is made difficult to shift to the left and right. Since the left inclined portion 21 and the cover member 60 and the right inclined portion 21 and the cover member 60 are mirror-symmetrical to each other, the work of assembling the support member 8 to the frame 7 is easy.

The side wall 61 is provided with a boss 63 that protrudes from the rear surface and abuts on the side member 14 at its tip. The side member 14 has an attachment hole 14a in the vicinity of the tip of the boss 63 to which a clip (not shown) that grips the linear member 36 can be attached. Even if a load is applied to the cover member 60 from the inclined portion 21, deformation of the side wall 61 of the cover member 60 is suppressed by the boss 63, so that the load is applied to the linear member 36 from the side wall 61 and the linear member 36 does not come off. is suppressed. Moreover, in order to dispose the linear member 36 so as to avoid the rear cross member 16, it is preferable to provide the side member 14 with a bracket for supporting the linear member 36. As shown in FIG. The cover reinforcing portion 64 is composed of ribs connected to the inner surface of the side wall 61 and the boss 63 . The ribs forming the cover reinforcing portion 64 have main surfaces orthogonal to the vertical direction, and are in contact with the side members 14 at the outer ends in the left-right direction. The rigidity of the cover member 60 is improved by the boss 63 and the cover reinforcing portion 64, and deformation of the cover member 60 is suppressed. In addition, this makes it possible to keep the position of the support member 8 constant with respect to the frame 7 . A portion of the lateral rib 41 of the inclined portion 21 and the ribs forming the cover reinforcing portion 64 are preferably arranged on a common straight line. In this case, since the portion whose rigidity is improved by the lateral ribs 41 and the portion whose rigidity is improved by the ribs forming the cover reinforcing portion 64 are arranged side by side, deformation of the support member 8 and the cover member 60 can be suppressed. In order to improve the rigidity, it is preferable that the vertical positions (vertical coordinates) of the cylindrical portion 34 and the boss 63 match. It should be noted that the lateral ribs 41 of the inclined portion 21 and the ribs forming the cover reinforcing portion 64 may be changed so that they are not arranged in a straight line. improve the feeling.

The lower end of the cover member 60 contacts and is supported by the inner side of the rail cover 13 in the left-right direction in the range in the front-rear direction where the inclined portion 21 contacts the cover member 60 . The rail cover 13 is supported by the upper rail 12 , and the side member 14 is supported by the upper rail 12 via the base member 65 . Thereby, deformation of the cover member 60 is suppressed, and the position of the support member 8 with respect to the frame 7 is fixed. Regarding the vertical position of the cover member 60 , the side edge of the inclined portion 21 abuts between the boss 63 abutting the side member 14 and the lower end supported by the rail cover 13 . Further, the side member 14 is arranged on the extended surface of the surface of the inclined portion 21 so as to improve the mounting rigidity.

As shown in FIG. 9 , the surface of the inclined portion 21 abuts against the pad 9 , and a portion of the pad 9 enters between the cover member 60 and the inclined portion 21 . Therefore, the side edge of the inclined portion 21 contacts the cover member 60 via the pad. Friction between the inclined portion 21 and the cover member 60 can be avoided by the pad 9 inserted between the cover member 60 and the inclined portion 21, and frictional noise can be suppressed. The left and right side edges of the pad 9 are located on the cover member 60 , that is, outside the side edges of the inclined portion 21 in the left and right directions. Therefore, the lateral width of the support member 8 can be reduced. If it is desired to increase the deflection of the inclined portion 21, the surface of the pad 9 facing the surface of the inclined portion 21 may be curved with respect to the inclined portion 21, so that the side edge of the inclined portion 21 is covered by the cover member. 60 to prevent the pad 9 from entering between the cover member 60 and the inclined portion 21 .

Pads 9 are also preferably located on front mounting pieces 56 (see FIG. 2) of support member 8 . In this case, the occupant's load is applied to the front attachment piece 56 via the pad, so that the engagement strength of the front attachment piece 56 that is engaged with the front cross member 15 (see FIG. 2) from above increases.

As shown in FIGS. 5B and 5C, hook receiving portions 66 recessed upward are formed in portions of the pad 9 facing the hooks 28 . Interference between the pad 9 and the hook 28 can be avoided by the hook receiving portion 66, and the work of attaching the hook 28 to the central locking hole 29 and the side locking holes 30 is facilitated. 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 .

Also, although not shown, when the heater is provided on the seat cushion 2, the left and right side edges of the base fabric of the heater are located inside the side edges of the left and right inclined portions 21, preferably the left and right side edges. It is positioned inside the vertical wire 24b. Also, the front side of the base fabric of the heater is preferably wider than the rear side.

FIG. 10 is a rear view of the pad 101 in the seatback 3 (see FIG. 1), and FIG. 11 is a perspective view of the side frame 102 of the seatback 3 as seen from the front inside. In order to improve workability, among the skin fixing members 103 for fixing the skin material 10 (see FIG. 1), those provided on the upper end side of the skin material 10 are positioned above the airbag 104 attached to the side frame 102. , and the attachment position 105 of the linear member 36 is preferably separated from the webbing clip attachment position 106 of the airbag 104 . When the linear member 36 is arranged on the front side of the side frame 102, the pad 101 is preferably arranged between the linear member 36 and the skin fixing material 103 so that the skin fixing material 103 does not come off. In order to improve rigidity, it is preferable that the skin fixing member 103 is provided at a position where the side frame 102 and the lower frame (not shown) are overlapped with each other or at a position where they are welded. When fixing the linear member 36 to the side frame 102, the mounting position 105 of the linear member 36 should be near the bead 107 facing the airbag 104 and avoid the module holder 108 in order to improve rigidity. is preferred. Moreover, it is preferable that the mounting position of the airbag 104 is on the extension line of the bead 107 in order to improve rigidity. Furthermore, in order to improve workability, it is preferable that the mounting position of the module holder 108 avoids the flange 109 of the side frame 102 in a side view.

The pad 101 is arranged on the back side so as to overlap the main portion 101a arranged on the front side and the upper portion and the left and right side portions of the main portion 101a, and cooperates with the main portion 101a to form an upper frame (not shown) and a side frame. and an end portion 101b that wraps around the frame 102 . The main portion 101a is provided with a hanging hole 110 for hanging the skin material 10 (see FIG. 1). In the end portion 101b, a notch 111 extending from the inside to the outside is provided at the connecting portion between the upper portion and the left and right side portions. A through-hole 112 provided in a side portion of the main portion 101a is provided flush with the module holder 108 attached to the side frame 102 . The through hole 112 is provided at a position avoiding the wire 114 holding the support member 113 .

Although the specific embodiments have been described above, the present invention is not limited to the above embodiments and can be widely modified. Instead of the hook, the end portion of the skin material may be a locking portion having another structure such as a clip. Some ribs may be omitted to increase the deflection of the member. A part of the linear member may be fixed to a place other than the inclined portion, for example, to a highly rigid side member or the like. The configurations of the above embodiments and modified embodiments may be applied to seat backs, and may be applied to seats of vehicles other than vehicles, such as airplanes.

1: Seat 2: Seat cushion 7: Frame 8: Support member 9: Pad 10: Skin material 20: Main body 21: Inclined portion 35: Mounting hole 42: Rear reinforcing portion (longitudinal end reinforcing portion)
43: Standing wall 44: Bottom wall 45: Reinforcement wall 46: Connection reinforcing part 47: Connection concave part 48: Connection rib

Claims (10)

A vehicle seat having a seat cushion and a seat back,
a frame-shaped frame provided on at least one of the seat cushion and the seat back;
a support member supported by the frame so as to be positioned within the frame and supporting an occupant;
The frame has a pair of left and right side members and a cross member connecting corresponding ends of the side members,
The left and right side members are provided with cover members that cover at least part of the side surfaces facing each other,
The support member has a plate-like main body extending substantially parallel to the frame, and inclined portions extending outward from left and right side edges of the main body while being inclined toward the front side,
the left and right inclined portions abut on the corresponding left and right cover members,
A connection reinforcement portion having a connection recess recessed on a surface side and a connection rib disposed in the connection recess is provided at the connection portion between the main body and the inclined portion. vehicle seat. 2. The vehicle seat according to claim 1, wherein said inclined portion has a mounting hole for mounting a clip. 3. The vehicle seat according to claim 2, wherein at least some of said connecting ribs are arranged laterally laterally of said mounting holes. 4. The vehicle seat according to claim 2, wherein the longitudinal length of said connecting recess is longer than the longitudinal length of said mounting hole. an upright wall extending from one end edge of the inclined portion in the vertical direction to the back side so as to be orthogonal to the surface of the inclined portion; and a vertical end reinforcing portion having a bottom wall extending in an inclined direction toward the extended surface of the vertical end portion and a reinforcing wall fixed so as to be orthogonal to the standing wall and the bottom wall. A vehicle seat according to any one of claims 2 to 4. 6. The vehicle seat according to claim 5, wherein the mounting holes are positioned on the longitudinal extension of at least a portion of the reinforcing wall. 7. The vehicle seat according to claim 5, wherein said reinforcing wall is positioned laterally outwardly of said connecting rib. The vehicle seat according to any one of claims 5 to 7, wherein the longitudinal end reinforcement portion is located on the one side in the longitudinal direction relative to the connection reinforcement portion. A vehicle seat according to any one of claims 5 to 8, characterized in that said connecting ribs are arranged at an angle to said reinforcing wall. 10. A vehicle seat according to claim 9, wherein said connecting ribs extend in the transverse direction and said stiffening walls extend in said longitudinal direction.

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