KR20180037117A - Vehicle seat - Google Patents

Abstract

The present invention relates to a vehicle seat (10), which forms a framework of at least one between a seat cushion (12) and a seat back (40). Moreover, the present invention comprises: a pair of frame members (14, 44) disposed leaving an interval each other with respect to a position covering a seat area for supporting an occupant; and a fabric spring member (22) disposed between the frame members (14, 44) to cover the seat area. According to the fabric spring member (22), the length in the direction in which a fabric spring member (2) spreads on at least one end side of the longitudinal direction of the frame members (14, 44) is shorter than the length in which the fabric spring member (22) spreads on a central portion of the longitudinal direction of the frame members (14, 44). Moreover, the fabric spring member (22) is elastic.

Description

VEHICLE SEAT {VEHICLE SEAT}

The present invention relates to a vehicle seat.

With respect to a cushion member of a vehicle seat, a technique of using a net member as a cloth spring has been developed. For example, Japanese Unexamined Patent Application Publication No. 2015-20596 discloses a seat cushion in which an occupant seats, a pair of side frames, a U-shaped pipe frame disposed between the side frames, Discloses a vehicular seat structure having a built-up spring (net material). Thus, by using the cloth spring as the cushion member, the weight of the cushion member can be reduced as compared with the urethane pad, the metal spring, and the like. Further, in the structure disclosed in Japanese Patent Application Laid-Open No. 2015-20596, the tension of the cloth spring is secured by using the pipe frame having high rigidity.

However, in the case of using the cloth spring as described above, the tension of the cloth spring can be ensured in the direction in which the cloth spring is laid. However, in the direction perpendicular to the direction in which the cloth springs are laid (the direction in which they are spread) and in the plane perpendicular to the cloth springs, the end portions of the cloth springs are free ends. In the direction in which the free ends of the cloth springs are opposed to each other, tension is not applied even when a load is applied by seating of the occupant, and it is difficult to restrict the movement of the occupant. That is, in the direction orthogonal to the direction in which the cloth springs are laid, it is difficult to control the deformation of the cloth springs.

The present invention provides a vehicle seat capable of changing the amount of deformation of a thin spring member with respect to a load from a seating occupant even in a direction orthogonal to a direction in which the cloth spring member extends.

A vehicle seat according to an aspect of the present invention includes a pair of frame members which form a skeleton of at least one of a seat cushion and a seatback and are spaced apart from each other at a position surrounding a seat region for supporting a passenger; And a thinning spring member disposed between the pair of frame members so as to cover the seat area, wherein the thinning spring member is configured such that the thinning spring member on at least one end side in the longitudinal direction of the frame member Is shorter than the length in the direction in which the thick spring member is spread in the central portion in the longitudinal direction of the frame member, and the thick spring member has elasticity.

According to the vehicle seat of the present invention, a pair of frame members are disposed at positions spaced apart from each other at a position surrounding a seat area for supporting a passenger. The pair of frame members forms a skeleton of at least one of a seat cushion and a seat back. The stylus spring member has elasticity and is placed between a pair of frame members so as to cover the seat area. The length of the cloth spring member in the extending direction of at least one end in the longitudinal direction of the frame member is shorter than the length of the frame member in the extending direction in the central portion in the longitudinal direction of the frame member. As a result, the elastic modulus of the one end of the elastic spring member is higher than that of the center portion. In addition, the elastic modulus here means Young's modulus. As described above, the elastic modulus of one end side of the thick spring member is made higher than that of the central portion. Thus, the elastic spring member is less likely to be deformed at the one end side even if a load from the occupant is applied, and the amount of deformation can be reduced. The " length in the extending direction " of the thick spring member in the present invention means the length of the portion in which the thick spring member is laid. In other words, this means the length of the portion where the elastic spring force can be exerted in the state where the elastic spring member is laid.

In the vehicle seat of the present invention, it is preferable that the seat region includes a seat surface region for supporting the thigh of the occupant from below, and the pair of frame members are arranged at a position surrounding the seat surface region, And a pair of cushion front and rear frames extending in the seat width direction with an interval in the front-rear direction. The length of the thick spring member in the seat front-rear direction placed between the front and rear frames of the cushion, And may be configured to be shortened from the central portion toward the outer side in the seat width direction.

According to the vehicle seat of the present invention, the pair of frame members extend in the seat width direction at intervals in the seat back-and-forth direction at a position surrounding the seat area for supporting the thigh of the occupant from below . Then, the thin spring member placed in the front-back direction of the seat becomes shorter in length from the center in the sheet width direction toward the outer side in the seat width direction. Therefore, the modulus of elasticity of the thick spring member is higher than that of the central portion in the seat width direction, and the amount of deformation due to the load from the occupant is smaller on the outer side in the seat width direction than in the center portion in the seat width direction. Thus, it is possible to restrict the movement of the seat occupant in the seat width direction.

In the vehicle seat of the present invention, the seat region includes a seat surface region for supporting the femoral portion of the occupant from below, and the pair of frame members are arranged at a position surrounding the seating surface region And a pair of cushion side frames extending in the front-back direction of the seat at intervals in the seat width direction, wherein the length of the cushion side frame in the seat width direction of the cushion side frame , And may be configured to be elongated toward the front of the seat from the rear of the seat.

According to the vehicle seat of the present invention, the pair of frame members extend in the front-rear direction of the seat at intervals in the seat width direction at a position surrounding the seat area for supporting the thigh of the occupant from below . The thin spring member laid across the seat width direction is long in length from the rear of the seat toward the front of the seat, and has a large elastic modulus on the rear side of the seat. The load from the occupant to the thin spring member is larger at the hip side than at the femoral side so that the elasticity of the back side of the seat is increased so that the load of the seated occupant can be stably received by the thin spring member.

In the vehicle seat of the present invention, at least a portion of the thick spring member which is lower than both ends in the seat width direction may be formed at least on the seat rear side.

According to the vehicular seat of the present invention, at least a portion of the stylus spring member that is lower in height than the both ends in the seat width direction is formed on the rear side of the seat. Since the deformation starting position (deflection start position) with respect to the load from the seating occupant is lower in the lower portion of the seat in the vertical direction than in the seat width direction, at least the left pressures on the buttocks of the occupant are locally .

In the vehicular seat of the present invention, the seat region includes an area for supporting the back portion of the passenger, and the pair of frame members are arranged at a position that surrounds the above- And the upper and lower back frames extend in the sheet width direction at intervals in the direction of the sheet width direction and the length of the sheer spring member placed between the upper and lower back frames in the up- And may be configured to be shortened toward the outside in the width direction.

According to the vehicle seat of the present invention, the pair of frame members extend in the seat width direction at intervals in the seat top-to-bottom direction at the positions surrounding the seat portion for supporting the occupant's seat. The thin spring member laid across the seat width direction is shortened in length as it extends outward from the center in the seat width direction toward the seat width direction outward. Therefore, the modulus of elasticity of the thick spring member is higher than that of the central portion in the seat width direction, and the amount of deformation due to the load from the occupant is smaller on the outer side in the seat width direction than in the center portion in the seat width direction. Thus, it is possible to restrict the movement of the seat occupant in the seat width direction.

In the vehicle seat of the aspect of the present invention, the seat region may include a rear portion region for supporting the occupant's back portion, and the pair of frame members may be spaced apart from each other at a position surrounding the rear portion region in the seat width direction And a length in the seat width direction of the thick spring member laid between the back side frames is set in such a manner that in the vertical direction of the seat, Or may be configured to be longer.

According to the vehicle seat of the present invention, the pair of frame members extend in the up-and-down direction of the seat at intervals in the seat width direction at a position surrounding the deploying region for supporting the passenger's seat. The thin spring member laid across the seat width direction is long in length from the bottom of the seat toward the top of the seat, and has a small elastic modulus above the seat. By reducing the elastic modulus of the upper side of the seat in this way, the cushion performance when leaning against the seating seat occupant can be improved.

According to an aspect of the present invention, a vehicle seat includes: a wire for supporting a short side edge of the thin spring member; And a mounting member for mounting the wire to the frame member, wherein an annular portion sewn by folding back the short side of the stylus spring member along the frame member is formed on the stylus spring member, And may be configured to be inserted into the shape portion to support the short side of the stylus spring member.

According to the aspect of the present invention, the thin spring member of the vehicle seat is formed with an annular portion sewn by folding back the short side along the frame member. By inserting the wire into the annular portion, the short side of the thin spring member can be easily supported. Further, by attaching the wire to the frame member by the mounting member, it is possible to easily mount the elastic member to the frame member via the wire.

In the vehicle seat of the present invention, a pair of the wires are arranged at intervals in the sheet width direction, and a curved portion convex downward from the seat width direction is formed on the rear side of the wire do.

According to the vehicle seat of the present invention, a curved portion that is convex toward the bottom of the seat is formed on the rear side of the seat of the wire as viewed from the seat width direction. Therefore, at the portion corresponding to the curved portion of the wire of the stylus spring member, the fitting of the seated occupant to the buttocks is improved, and the movement of the seated occupant in the seat back-and-forth direction can be regulated.

In the vehicle seat of the present invention, the pair of wires may be formed with a curved portion that curves in an arc shape in a direction away from each other on the rear side of the seat.

In the vehicle seat of the present invention, the density of the warp yarns of the elastic fibers forming the elastic members may be denser than the rear side of the seat at the front side of the seat, and may be sprued at the rear side of the seat .

In the vehicle seat of the present invention, the density of the warp yarns of the elastic fibers forming the thick spring member is denser than that between the central portion in the sheet width direction and both ends in the center portion and both ends in the sheet width direction, And may be sparse between the center in the width direction and the both ends.

In the vehicle seat of the aspect of the present invention, the seat region may include a rear portion region for supporting the occupant's back portion, and the pair of frame members may be spaced apart from each other at a position surrounding the rear portion region in the seat width direction And a backside side frame extending in a vertical direction of the seat, wherein the vehicle seat comprises: a wire supporting a short side of the thin spring member; And a mounting member for mounting the wire to the back side frame, wherein an annular portion sewn by folding back the short side of the thin spring member along the back side frame is formed in the thin spring member, And may be inserted into the annular portion to support the short side of the thin spring member.

In the vehicular seat of the present invention, the wire may include: a first curve portion curved in an arc shape in a direction away from each other in a direction from the lower side of the sheet toward the intermediate portion; and a second curve portion curved in an arc- And the first bend section may be curved in an arc shape so as to be convex from above the seat toward the upper side of the seat.

In the vehicle seat of the present invention, the density of the weft yarns of the elastic fibers forming the elastic members is denser than that of the second bends in the first bends, and spun in the second bends .

According to the vehicle seat of the present invention, the deformation amount due to the load from the occupant on the one end side or the both end sides of the thin spring member can be made smaller than the central portion in the direction orthogonal to the spreading direction.

According to the vehicle seat of the present invention, it is possible to restrict the movement of the seat occupant in the seat width direction by increasing the elasticity modulus of the thin spring member at both ends in the seat width direction.

According to the vehicle seat of the present invention, by increasing the elastic modulus of the thin spring member on the rear side of the seat, it is possible to stably receive the load of the seating passenger in the thin spring member.

According to the vehicle seat of the present invention, it is possible to locally reduce the pressure on the buttocks side of a seated occupant.

According to the vehicle seat of the present invention, it is possible to restrict the movement of the seat occupant in the seat width direction by increasing the elasticity modulus of the thin spring member at both ends in the seat width direction.

According to the vehicle seat of the present invention, the cushion performance when leaning against the seating seat occupant can be improved by reducing the elastic modulus of the thick spring member above the seat.

According to the vehicle seat of the present invention, it is possible to easily mount the cloth spring member on the frame member.

According to the vehicle seat of the present invention, it is possible to restrict the movement of the seat occupant in the seat front-rear direction.

BRIEF DESCRIPTION OF THE DRAWINGS Features, advantages, and technical and industrial significance of an exemplary embodiment of the present invention will be described below with reference to the accompanying drawings, wherein like reference numerals designate like elements.
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is an overall schematic perspective view of a vehicle seat and a cloth spring unit according to a first embodiment; FIG.
2 is a perspective view of a cloth spring unit of a vehicle seat according to the first embodiment.
3 is an exploded perspective view of a cloth spring unit of a vehicle seat according to the first embodiment.
4 is a plan view of a cloth spring unit of a vehicle seat according to the first embodiment.
5 is an overall schematic perspective view of the vehicle seat and cloth spring unit according to the second embodiment.
6 is a perspective view of a cloth spring unit of a vehicle seat according to a second embodiment.
7 is an exploded perspective view of a cloth spring unit of a vehicle seat according to a second embodiment.
8 (a) is a plan view of a cloth spring unit of a vehicle seat according to a third embodiment.
Fig. 8 (b) is a view of the cloth spring unit of Fig. 8 (a) viewed from the direction of arrow 8B.
Fig. 8 (c) is a view of the cloth spring unit of Fig. 8 (a) viewed from the direction of arrow 8C.
9 is a perspective view showing a modified example of the cloth spring unit of the third embodiment.
10 is a plan view showing another modified example of the cloth spring unit of the third embodiment.
11 (a) is a plan view of a cloth spring unit of a vehicle seat according to a fourth embodiment.
11 (b) is a view of the cloth spring unit of Fig. 11 (a) viewed from the direction of the arrow 11B.
12 is a plan view of a modification of the cloth spring unit of the vehicle seat according to the fourth embodiment.
13 is a plan view of a modified example of a cloth spring unit of a vehicle seat according to a fourth embodiment.
14 (a) is a plan view of a cloth spring unit of a vehicle seat according to a fourth embodiment.
Fig. 14 (b) is a view of the cloth spring unit of Fig. 14 (a) viewed from the direction of arrow 14B.
15 is a plan view of a modified example of the cloth spring unit of the vehicle seat according to the fourth embodiment.
Fig. 16 (a) is a plan view of a cloth spring unit of a vehicle seat according to another embodiment. Fig.
16 (b) is a view of the cloth spring unit of Fig. 16 (a) viewed from the direction of arrow 16B.
Fig. 16 (c) is a view of the cloth spring unit of Fig. 16 (a) viewed from the direction of the arrow 16C.
Fig. 16 (d) is a view of the cloth spring unit of Fig. 16 (a) viewed from the direction of the arrow 16D.
17 (a) is a plan view of a cloth spring unit of a vehicle seat according to another embodiment.
Fig. 17 (b) is a view of the cloth spring unit of Fig. 17 (a) viewed from the direction of arrow 17B.
Fig. 17 (c) is a view of the cloth spring unit of Fig. 17 (a) viewed from the direction of arrow 17C.
Fig. 17 (d) is a view of the cloth spring unit of Fig. 17 (a) viewed from the direction of arrow 17D.

[First Embodiment]

Hereinafter, with reference to Figs. 1 to 4, a first embodiment of a vehicle seat relating to the present invention will be described. Arrows FR and arrows W in the front and rear directions of the seat, the seat width direction and the up-and-down direction of the seat are respectively shown in the front and rear direction of the seat.

1, the vehicle seat 10 is provided with a seat cushion 12 on which a passenger seats, and a seatback 40 provided on the rear end of the seat cushion 12 to support the upper body of the passenger . The seat cushion 12 supports the femoral portion of the occupant from the lower side.

The seat cushion 12 is provided with a pair of cushion front and rear frames 14 at both ends in the front and rear direction of the seat. The cushion front and rear frames 14 are disposed on both sides of the seat front-back direction surrounding the occupant's seat area 17 as an example of the seat area with a space therebetween. The frame 14 before and after the cushion extends along the seat width direction and forms the skeleton of the seat cushion 12. [ The front cushion frame 14A on the front side of the cushion front and rear frames 14 and the rear cushion frame 14B on the rear side are used. A cloth spring unit 20 is provided across the pair of cushion front and rear frames 14.

2, the cloth spring unit 20 includes a cloth spring member 22, a first wire 30, a second wire 32, and a hook 34. As shown in Fig.

The elastic member 22 is formed of elastic material such as an elastic fabric and has elastic members such as a cloth spring main body portion 24, one end portion 26, and the other end portion 28 Have. One end portion 26 is disposed on the front side of the seat and the other end portion 28 is disposed on the rear side of the seat with the cloth spring main body portion 24 therebetween.

The one end portion 26 is folded back from the folding line 26A to the other end portion 28 and is sewn to the cloth spring main body portion 24 at the seam line 26B as shown in Fig. An annular portion 26C is sewn on the folding line 26A side of the seam line 26B by the thinning spring main body portion 24 and the one end portion 26. [ An opening 23 is formed at a position corresponding to the longitudinal center portion of the folding line 26A.

3, the other end portion 28 is formed on both sides in the sheet width direction with a cutout 27 formed at the center in the sheet width direction interposed therebetween. The other end portion (28) is inclined so that the outer side in the seat width direction is directed toward the one end portion (26) side when seen in plan view. The other end portion 28 is folded back from the folding line 28A to the end 26 side and is sewn to the cloth spring main body portion 24 at the seam line 28B as shown in Fig. An annular portion 28C is sewn to the other end 28 side of the sewing line 28B by the cloth spring main body portion 24 and the other end portion 28. [ The other short side 22C of the stylus spring 22 is formed by the folding line 28A.

As shown in Fig. 2, the stylus spring 22 has one end 22A disposed on the front side of the seat, a lateral side 22B disposed on both sides in the seat width direction, And has the other short side 22C to be disposed. One side 22A is disposed along the seat width direction, and the side edge 22B is disposed along the seat front-rear direction. The other short side 22C is formed at a position along the folding line 28A and is inclined such that the outside in the sheet width direction faces the front of the seat.

A first wire (30) is attached to the annular portion (26C) of the spring member (22). As shown in Fig. 3, the first wire 30 has an insertion passage portion 30A and a hooking portion 30B bent from both ends of the insertion passage portion 30A. The insertion passage portion 30A is inserted into the annular portion 26C and the hook portion 30B extends in the front and rear direction of the seat from the outside of the elastic spring member 22. [ The first wires 30 are provided on both sides with the openings 23 therebetween.

A hook 34 is provided at each tip of the hook portion 30B. The hook 34 is hooked and engaged with the front cushion frame 14A. The hooks 34 provided on the hooking portion 30B adjacent to each other with the opening portion 23 therebetween are connected to each other by a connecting portion 34A.

A second wire (32) is attached to the annular portion (28C) of the spring member (22). The second wire 32 has an insertion passage portion 32A and a hooking portion 32B curved from both ends of the insertion passage portion 32A as shown in Fig. The insertion passage portion 32A is inserted into the annular portion 28C and the hook portion 32B extends from the outside of the stylus spring 22 in the seat forward direction. The second wires 32 are provided on both sides of the cutout 27, respectively. The length of the hooking portion 32B arranged on the center side in the seat width direction is shorter than the length of the hooking portion 32B arranged outside the seat width direction.

A hook 34 is provided at each tip end of the hooking portion 32B. The hook 34 is shaped like a hook and hooked to the rear cushion frame 14B. The tips of the hooks 34 of the respective second wires 32 are connected to each other by a connecting portion 34B. The hooks 34 provided on the neighboring hooking portion 32B with the cutout 27 therebetween are connected to each other by a connecting portion 34A.

The one end 26 side of the elastic spring member 22 is attached to the front cushion frame 14A with the first wire 30 and the hook 34 interposed therebetween. The other end portion 28 side is attached to the rear cushion frame 14B via the second wire 32 and the hook 34. [ That is, the cloth spring member 22 is placed between the front cushion frame 14A and the rear cushion frame 14B. 4, the length L1 of the side lengthwise side 22B is shorter than the length L2 of the middle widthwise direction in the seat width direction in the direction in which the thick spring member 22 is extended. The " length in the extending direction " of the tongue spring member 22 in the present invention is a length of the portion in which the tongue spring member 22 is laid, that is, The length of the portion capable of exerting the elastic force. Therefore, even if the other end portion 28 side of the elastic spring member 22 extends rearward beyond the second wire 32, for example, in the direction in which the elastic spring member 22 is extended, , The extending portion of the rearward projecting portion is excluded from the length. The portion of the annular portion 28C into which the second wire 32 is inserted becomes the end of the length of the stylus spring member 22. [

As shown in Fig. 1, a pair of upper and lower back frames 44 are arranged at both ends of the seat back 40 in the vertical direction of the seat. The upper and lower back frames 44 are disposed on both sides in the vertical direction of the seat which surrounds the passenger's seat area 47 as an example of the seat area with an interval therebetween. The upper and lower back frames 44 extend along the seat width direction to form the skeleton of the seat back 40. [ The lower side of the upper and lower back frames 44 is a lower back frame 44A and the upper side is an upper back frame 44B. In the pair of upper and lower back frames 44, the aforementioned cloth spring units 20 are laid.

One end 26 side of the cloth spring unit 20 is disposed on the upper back frame 44B side and the other end 28 side is disposed on the lower back frame 44A side. That is to say, the elastic spring member 22 is attached to the upper back frame 44B via the first wire 30 and the hook 34 at one end 26 side. The other end portion 28 side is attached to the lower back frame 44A via the second wire 32 and the hook 34. [ That is, the thin spring member 22 is placed between the lower back frame 44A and the upper back frame 44B.

Further, in the seat cushion 12 and the seat back 40, the load of the occupant is elastically supported by the cloth spring unit 20. A ventilated foam layer or a topsheet layer (not shown) is laminated on the sitting occupant side of the cloth spring unit 20 of the seat cushion 12 and the seat back 40. [

Next, the operation of the present embodiment will be described.

When the seat cushion 12 is seated on the vehicle seat 10, the thigh and the buttocks of the occupant are supported from below by the seat cushion 12, and the upper half of the occupant is supported by the seatback 40 from the back side. At this time, the stylus spring member 22 is elastically deformed by the load from the occupant.

The elastic members 22 of the cloth spring unit 20 placed over the front and rear frames 14 of the cushion in the seating surface area 17 are arranged such that the length in the extending direction Is shorter. Even in the distribution area 47, the elastic members 22 of the cloth spring unit 20 placed over the upper and lower back frames 44 are arranged such that the length in the extending direction is smaller in the sheet width direction Both sides are short. Therefore, the elastic members of the elastic members of the elastic members 22 are shorter than those of the central portions in the sheet width direction. Therefore, the amount of deformation due to the load from the occupant can be reduced, as compared with the central portion, on the side of the side portion 22B of the elastic spring member 22 having a high elastic modulus. Accordingly, it is possible to restrict the movement of the occupant in the seat width direction. In this embodiment, the one end 26 side of the stylus spring 22 is attached to the front cushion frame 14A via the first wire 30 and the hook 34, and the other end 28 Is attached to the rear cushion frame 14B via the second wire 32 and the hook 34 but may be attached to the front cushion frame 14A and the rear cushion frame 14B in other configurations. For example, the hook 34 is directly attached to the one end 26 and the other end 28 of the elastic spring member 22 and the front cushion frame 14A and the rear cushion frame 14B. The longitudinal direction of the front cushion frame 14A and the rear cushion frame 14B is made to follow the one end portion 26 and the other end portion 28 of the stylus spring member 22, It may be mounted on the cushion frame 14A and the cushion frame 14B. The above configuration may be applied to the second to fourth embodiments and modified examples described later.

In the first embodiment, the other end portion 28 of the elastic spring member 22 is inclined such that the outer side in the sheet width direction is directed toward the one end portion 26 side as seen in plan view. However, It does not. For example, the other end 28 of the elastic spring member 22 is inclined such that the outer side in the sheet width direction is directed toward the one end 26 side when viewed from the plane, Direction may be inclined toward the other end 28 side. The above configuration may be applied to the second to fourth embodiments described later and modified examples.

[Second Embodiment]

Next, a second embodiment of the vehicle seat will be described. In this embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and a detailed description thereof will be omitted.

As shown in Fig. 5, the seat cushion 12 is provided with a pair of cushion side frames 16 at both ends in the seat width direction. The cushion side frames 16 are disposed on both outer sides in the seat width direction surrounding the occupant's seat area 17 with a space therebetween. The cushion side frame 16 extends along the front and rear direction of the seat and forms the skeleton of the seat cushion 12. [ A pair of cushion side frames (16) is provided with a cloth spring unit (50).

6, the cloth spring unit 50 is provided with a cloth spring member 52, a third wire 60, a fourth wire 62, and a hook 64.

7, the cloth spring member 52 is formed of a cloth material having elasticity, such as an elastic fabric, and the cloth spring main body portion 54, the one end portion 56, and the other end portion 58 Have. One end portion 56 is disposed on one side of the outside in the seat width direction and the other end portion 58 is disposed on the other side outward in the seat width direction with the cloth spring main body portion 54 interposed therebetween.

The one end portion 56 and the other end portion 58 are inclined such that the front side of the seat is directed outward in the seat width direction when seen in plan view. Cutout portions 55 and 57 are respectively formed at the centers of the one end portion 56 and the other end portion 58 in the longitudinal direction.

The one end portion 56 is folded back from the folding line 56A toward the other end portion 58 and is sewn to the cloth spring main body portion 54 at the seam line 56B as shown in Fig. The other end 58 is folded back from the folding line 58A toward the one end 56 and seals the cloth spring main body 54 at the seam line 58B. An annular portion 56C is sewn on one end portion 56 side of the sewing line 56B by the cloth spring main body portion 54 and the one end portion 56. [ The laterally short side 52B of the elastic spring member 52 is formed by the folding line 56A. An annular portion 58C is sewn on the other end 58 side of the sewing line 58B by the cloth spring main body portion 54 and the other end portion 58. [ By the folding line 58A, the laterally short side 52B of the elastic spring member 52 is formed.

As shown in Fig. 6, the elastic spring member 52 is an outer rim when viewed in a planar shape, and has a long short side 52A disposed on the front side or the sheet side of the sheet, And a short side 52C disposed on the rear side of the seat or on the lower side of the seat. The proximal side 52A and the proximal side 52C are disposed along the sheet width direction and the proximal side 52B is inclined along the folding lines 56A and 58A.

A third wire (60) is mounted on the annular portion (56C) of the elastic spring member (52). As shown in Fig. 7, the third wire 60 has an insertion passage portion 60A and a hooking portion 60B curved from both ends of the insertion passage portion 60A. The insertion passage portion 60A is inserted into the annular portion 56C and the engaging portion 60B extends from the outside of the elastic spring member 52 in the sheet width direction. The third wires 60 are provided on both sides of the cutout portion 55, respectively. The length of the hook portion 60B disposed on the front side of the seat is shorter than the length of the hook portion 60B disposed on the rear side of the seat.

A hook 64 is provided at each tip end of the hooking portion 60B. The hook 64 is hooked and hooked to the cushion side frame 16 at one end. The hooks 64 provided on the adjacent hooking portion 60B with the cutout portion 55 therebetween are connected to each other by a connecting portion 64A.

A fourth wire (62) is attached to the annular portion (58C) of the elastic spring member (52). The fourth wire 62 has an insertion passing portion 62A and a hooking portion 62B bent from both ends of the insertion passing portion 62A. The insertion passage portion 62A is inserted into the annular portion 58C and the hook portion 62B extends from the outside of the elastic spring member 52 in the sheet width direction. The fourth wires (62) are provided on both sides of the cutout portion (57). The length of the hook portion 62B disposed on the front side of the seat is shorter than the length of the hook portion 62B disposed on the rear side of the seat.

A hook 64 is provided at each tip end of the hooked portion 62B. The hook 64 is shaped like a hook and hooked to the cushion side frame 16 on the other end side. The ends of the hooks 64 of the respective fourth wires 62 are connected to each other by a connecting portion 64B. The hooks 64 provided on the adjacent hooking portions 62B with the cutout portion 57 therebetween are connected to each other by a connecting portion 64A.

One end portion 56 side of the elastic spring member 52 is attached to the cushion side frame 16 at one end via the third wire 60 and the hook 64. [ The other end 58 is attached to the other side cushion side frame 16 via the fourth wire 62 and the hook 64. That is, the cloth spring member 52 lies between the pair of cushion side frames 16.

5, the seatback 40 is provided with a pair of back side frames 46 at both ends in the seat width direction. The back side frames 46 are arranged on both sides in the seat width direction surrounding the occupant's distribution area 47 with an interval therebetween. The back side frame 46 extends along the up-and-down direction of the seat, and forms a skeleton of the seat back 40. In the pair of back side frames 46, the aforementioned cloth spring units 50 are laid.

One side of the spring side unit 50 is disposed on one side of the back side frame 46 and the other side is disposed on the other side of the back side frame 46. [ That is, one end of the elastic spring member 52 is attached to one side of the back side frame 46 via the third wire 60 and the hook 64. The other side is attached to the other side of the back side frame 46 via the fourth wire 62 and the hook 64. [ That is, the stylus spring members 52 are placed between the pair of back side frames 46.

Next, the operation of the present embodiment will be described. When the seat cushion 12 is seated on the vehicle seat 10, the thigh and the buttocks of the occupant are supported from below by the seat cushion 12, and the upper half of the occupant is supported by the seatback 40 from the back side. At this time, the stylus spring member 52 is elastically deformed by the load from the occupant.

The length of the elastic spring member 52 of the cloth spring unit 50 placed on the cushion side frame 16 in the seating surface area 17 is shorter in the backward direction than in the front side of the seat. Therefore, the rear portion of the thin spring member 52 has a higher elastic modulus than the forward portion. Since the load from the seat occupant to the spring member 52 is larger on the side of the hips than on the side of the thighs, the elasticity of the back of the seat is increased, so that the seat spring member 52 can receive the load of the seat occupant stably.

The elastic members 52 of the cloth spring unit 50 placed over the pair of back side frames 46 in the distribution area 47 are arranged such that the length in the extending direction is smaller short. The thin spring member 52 laid across the sheet width direction is long in length from the bottom of the sheet toward the top of the sheet, and has a low modulus of elasticity above the sheet. By reducing the elastic modulus of the upper side of the seat in this way, the cushion performance when leaning against the seating seat occupant can be improved.

In the present embodiment, the cloth spring unit 50 is provided over the cushion side frame 16 so that the length of the cloth spring member 52 in the extending direction is shorter than that of the front side of the sheet, The spiral spring unit 50 may be provided so as to be longer than the seat front in such a manner that the length in the direction in which the seat backs 52 are laid out is reversed in front and rear directions. In this case, since the resilience of the thin spring member 52 in front of the short seat is higher than that of the rear seat, the movement of the occupant in front of the seat can be restricted at the time of sudden braking or the like.

In the present embodiment, the cloth spring unit 50 is disposed on the seat cushion 12 and the seat back 40. However, the cloth spring unit 50 may be provided on either the seat cushion 12 or the seat back 40, As shown in Fig.

The cloth spring unit 20 of the first embodiment and the cloth spring unit 50 of the second embodiment may be appropriately combined and used. That is, the cloth spring unit 20 may be disposed on the seat cushion 12 and the cloth spring unit 50 may be disposed on the seat back 40. The cloth spring unit 50 may be provided on the seat cushion 12, And a cloth spring unit 20 may be disposed on the seat back 40. [0050]

[Third embodiment]

Next, a third embodiment of the vehicle seat will be described. The present embodiment is the same as the first embodiment except for the structure of the cloth spring unit 50. The same parts as those in the first embodiment are denoted by the same reference numerals, and a detailed description thereof will be omitted.

8A to 8C, the cloth spring unit 70 of the present embodiment includes a cloth spring member 22, a first wire 30, a second wire 72, And a hook 34 is provided. The spring spring unit 70 of the present embodiment is the same as the spring spring unit 20 of the first embodiment except for the configuration of the second wire 72. [

A second wire (72) is mounted on the annular portion (28C) of the spring member (22). 8A to 8C, the second wire 72 has an insertion passage 72A and a bent hook 72B from one end of the insertion passage 72A, And a hooked hook portion 72C bent from the other end of the insertion passage portion 72A. The insertion passage portion 72A is inserted into the annular portion 28C and is inclined such that the other end portion located on the outer side in the seat width direction than the one end portion located on the inner side in the seat width direction is positioned above the seat. The hooking portion 72C extends from the outside of the cloth spring member 22 in the front-rear direction of the seat. On the other hand, the hooking portion 72B extends in the sheet longitudinal direction from the inner side (the cutout 27 side) of the cloth spring member 22 in the sheet width direction. The second wires 72 are provided on both sides of the cutout 27, respectively. The length of the hooking portion 72B disposed on the center side in the seat width direction is shorter than the length of the hooking portion 72C disposed on the outside in the seat width direction.

As shown in Figs. 8 (a) and 8 (c), since the thin spring member 22 is attached to the second wire 72, the height in the up- A portion 22D lower than both ends (the short side 22B) is formed. Since the portion 22D having a low position in the sheet vertical direction relative to both ends in the sheet width direction is formed in the thick spring member 22, (22E) is formed.

The cloth spring unit 70 of the present embodiment is used while being placed over the pair of front and rear frames 14 of the cushion.

Next, the operation of the present embodiment will be described. The description of the operation obtained in the same configuration as that of the first embodiment will be omitted.

In the present embodiment, the second wire 72 forms at least a portion 22D lower than both ends in the sheet width direction of the cloth-like spring member 22 at least toward the back of the sheet. Since the deformation starting position (deflection start position) with respect to the load from the occupant is lower than the both ends in the seat width direction, the portion 22D having a small height in the up-and-down direction of the seat It can be locally reduced. Particularly, since the outer side in the seat width direction than the folding line 22E, which is the boundary of the low height portion 22D in the sheet vertical direction, is higher than the low height portion 22D in the sheet vertical direction, The left-side pressure of the occupant on the seat can be effectively reduced.

In the third embodiment, the other end located on the outer side in the seat width direction than the one end located on the inner side in the sheet width direction of the insertion passage 72A of the second wire 72 is inclined to be positioned above the sheet. The aspects of the invention are not limited to the above configuration. For example, as in the second wire 74 of the modification shown in Fig. 9, the insertion portion 74A may be bent to be convex downward to form a concave portion. By forming the concave portion in the second wire 74, concave portion 22F is formed at the portion corresponding to the concave portion in the cloth spring member 22 as well. Here, the concave portion 22F of the thin spring member 22 has a lower height in the vertical direction of the seat than the other portions, so that the deformation start position (bending start position) with respect to the load from the occupant is lowered, It is possible to reduce the left pressure on the buttocks side to a portion corresponding to the concave portion 22F. For example, when the concave portion 22F corresponds to the sciatica, the ride comfort of the seated occupant is improved.

In the third embodiment, the insertion portion 72A of the second wire 72 is inclined such that the other end located on the outer side in the seat width direction than the one end located on the inner side in the sheet width direction is positioned above the sheet. The embodiment of the present invention is not limited to the above configuration. For example, as in the second wire 76 of another modification shown in Fig. 10, the insertion portion 76A may be bent so as to be convex toward the front of the seat or the back of the seat to form a convex portion. A convex portion is formed on the second wire 76 and a convex portion 78A is formed on a portion corresponding to the convex portion on the second wire 76 of the thin spring member 78. In the convex portion 78A, The longer the length of the overlaying direction is. The seat of the seated person is located at a portion corresponding to the convex portion 78A, thereby improving the ride comfort of the seated person.

In the third embodiment, the one end portion of the insertion portion 30A of the first wire 30 positioned on the inner side in the sheet width direction and the other end portion of the other end positioned on the outer side in the sheet width direction are located at substantially the same position But the embodiment of the present invention is not limited to the above configuration. For example, as in the case of the cloth spring unit 110 of another embodiment of the present invention shown in Figs. 16 (a) to 16 (d), the inserted portion of the first wire 112 is positioned inside the sheet width direction The other end positioned outside the seat width direction may be inclined so as to be located above the seat. With the above arrangement, it is possible to more effectively reduce the left-side pressure of the seated occupant. In addition, as in the case of the cloth spring unit 120 according to another embodiment of the present invention shown in Figs. 17 (a) to 17 (d), for example, (Without changing the position in the up-and-down direction of the sheet) from the one end located in the seat width direction toward the other end positioned above the one end than the one end in the seat width direction, It may be inclined toward the other end. With the above arrangement, it is possible to more effectively reduce the left-side pressure of the seated occupant.

[Fourth Embodiment]

Next, a fourth embodiment of the vehicle seat will be described. The present embodiment is the same as the second embodiment except for the structure of the cloth spring unit 80. [ The same parts as those in the second embodiment are denoted by the same reference numerals, and a detailed description thereof will be omitted.

As shown in Figs. 11A and 11B, the cloth spring unit 80 of the present embodiment includes a cloth spring member 82, a first wire 84, a second wire 86, And a hook 34 is provided.

The first wire 84 and the second wire 86 are arranged at intervals in the sheet width direction. Both end portions of the first wire 84 and the second wire 86 are bent outward in the seat width direction, and hooks 34 are attached to the distal end portions, respectively. The insertion portions 84A and 86A, which are respectively inserted into both end portions of the elastic members 82 of the first wire 84 and the second wire 86 in the sheet width direction, Curved portions 84B and 86B curved in an arc shape are formed. The curved portions 84B and 86B are curved so as to be convex toward the lower side of the seat as viewed from the seat width direction.

The stylus spring member 82 is formed of the same material as the stylus spring member 52 of the second embodiment. Both ends of the elastic member 82 in the sheet width direction are attached to the first wire 84 and the second wire 86, respectively.

Next, the operation of the present embodiment will be described. The description of the operation obtained in the same configuration as that of the second embodiment will be omitted.

In the present embodiment, curved portions 84B and 86B are formed on the rear side of the first wire 84 and the second wire 86 to be convex downward from the sheet width direction. Therefore, at the portions corresponding to the curved portions 84B and 86B of the elastic spring member 82, the fitting of the seated occupant to the buttocks is improved, and the movement of the seated occupant in the seat front-rear direction can be restricted. Since the curved portions 84B and 86B have a wider width in the seat width direction from the front side of the seat toward the rear side of the seat, it is possible to improve the fit to the buttocks while reducing the pressure of the thigh of the occupant. The movement of the occupant in the front-back direction of the seat can be more effectively regulated.

Further, since the first wire 84 and the second wire 86 are smoothly curved, it is possible to smoothly change (continuously change) the pressure of the seat occupant. Accordingly, the continuation of the left-seat pressure of the seat occupant is improved.

In the fourth embodiment, the same elastic spring member 82 as the elastic spring member 52 of the second embodiment is used, and the density (arrangement interval) of the warp yarns and the density (arrangement interval) However, the embodiment of the present invention is not limited to the above configuration. 12, the density of the warp yarns 89 of the elastic fibers forming the elastic spring members 88 is made narrow at the front side of the sheet, . With this configuration, it is possible to increase the pressure of the portion located in the thigh portion while reducing the pressure of the portion located in the hip portion of the occupant. The configuration for changing the density of the warp yarns of the elastic fibers may be applied to the first to third embodiments and modified examples. For example, in the case of applying to the first embodiment, it becomes a cloth spring member 90 of a modification shown in Fig. The density of the warp yarns 91 at the central portion and the both end portions in the sheet width direction is dense and the density of the warp yarns 91 between the center portion in the sheet width direction and both ends is sparse. According to the above configuration, since the density of the warp yarn 91 is sparse at the lower part of the sciatica of the seat occupant, the riding comfort is improved. 12 shows the warp yarn 89 such that the intervals of the warp yarns 89 are extremely different from each other so that the density of the warp yarns 89 can be easily discriminated. 13, the warp yarns 91 are shown so as to extremely differently arrange the warp yarns 91 so as to easily discriminate the density of the warp yarns 91, as in Fig.

Further, in the fourth embodiment, the spring spring unit 80 is mounted on the cushion side frame 16, but the embodiment of the present invention is not limited to the above structure. For example, it may be mounted on the back side frame 46. 14 (a) may be attached to the back side frame 46 in place of the cloth spring unit 80. [0100] Curved portions 102A and 104A curved in an arc shape are formed in the first wire 102 and the second wire 104 of the cloth spring unit 100 so as to be widened in directions away from each other toward the middle portion from the sheet bottom side And curved portions 102B and 104B curved in an arc shape are formed so as to be widened in a direction separating from the intermediate portion toward the upper side of the sheet. The curved portions 102A and 104A are curved in an arc shape so as to be convex from below the seat toward the upper side of the seat. Both ends of the first wire 102 and the second wire 104 are mounted on the pair of back side frames 46, respectively. A cloth spring member 106 is attached to the first wire 102 and the second wire 104. In this modification, a third wire 160 extending in the sheet width direction is attached to the lower side of the seat of the elastic spring member 106. With this configuration, the holdability of the portion corresponding to the curved portions 102A, 104A of the elastic spring member 106, that is, the recessed portion of the occupant of the seat occupation, is improved. On the other hand, the cushioning property of the portion corresponding to the curved portions 102B, 104B of the elastic spring member 106, that is, the shoulder portion of the seat occupant, is improved. By making the weft yarn 107 of the elastic spring member 106 of the modified example dense at the positions corresponding to the curved portions 102A and 104A and sparse at the positions corresponding to the curved portions 102B and 104B, The cushioning property of the shoulder portion is further improved (see Fig. 15).

Although the embodiment of the present invention has been described above, it is needless to say that the present invention is not limited to the above, but may be modified in various ways within the scope not departing from the gist of the present invention.

Claims (15)

In the vehicle seat 10,
A pair of frame members (14, 44; 16, 46, 46) which are arranged at a distance from each other at a position surrounding the seat area for supporting the occupant and forming a skeleton of at least one of the seat cushion (12) ); And
A pair of frame members (14, 44; 16, 46) covering the seat area; a plurality of elastic members (22, 52; 78; 82; 88; 22; 52; 78; 82; 88; 90; 106)
Wherein the length of the stretching spring member (22; 52; 78; 82; 88; 90; 106) at the at least one end side in the longitudinal direction of the frame member (14, 44; Wherein the elastic members of the elastic members in the longitudinal direction of the frame members are shorter than the length in the extending direction of the frame members,
The seat (10) of any preceding claim, wherein the spring member (22; 52; 78; 82; 88; The method according to claim 1,
Wherein the seat region includes a seat surface region (17) for supporting the thigh of a passenger from below, and the pair of frame members (14) are arranged at a position surrounding the seating surface region (17) And a pair of cushion front and rear frames 14 extending in the sheet width direction with an interval between the cushion front and rear frames 14. The longitudinal length of the cushion front and rear frames 14, (10) is configured to be shorter in the width direction as it goes outward in the seat width direction than the center in the seat width direction. The method according to claim 1,
Wherein the seat region includes a seat surface region (17) for supporting the thigh of a passenger from below, and the pair of frame members (16) And a pair of cushion side frames 16 extending in the front and rear direction of the seat with an interval between the cushion side frames 16. The length of the cushion side frame 16 in the seat width direction, (10) is configured to be elongated from the rear of the seat toward the front of the seat in the front-rear direction. The method according to claim 2 or 3,
Wherein at least a portion of the seat back member (22; 52; 78; 82; 88; 90) having a height lower than both ends in the seat width direction is formed at least on the seat rear side. 5. The method according to any one of claims 1 to 4,
Wherein the seat region includes an abutment region (47) for supporting the occupant's abdomen, and the pair of frame members (44) are spaced apart from each other in the vertical direction of the seat And the upper and lower back frames 44 extending in the sheet width direction and the length of the vertical spring members 22 laid between the upper and lower back frames 44 in the vertical direction is set to be shorter than the length (10) is configured to become shorter as it goes outward from the center in the width direction toward the seat width direction. 5. The method according to any one of claims 1 to 4,
Wherein the seat region includes a backing region (47) for supporting a back portion of a passenger, and the pair of frame members (46) are spaced apart from each other at a position surrounding the backing region (47) And a back side frame 46 extending in the up and down direction of the seat and the length of the thin spring member 52 placed between the back side frames 46 in the sheet width direction is set to be, (10) configured to extend from the lower side toward the upper side of the seat. The method according to any one of claims 1, 2, and 4 to 6,
Wires (30, 32) supporting short sides of the stylus spring members (22; And
Further comprising a mounting member (34) for mounting the wires (30, 32) to the frame members (14, 44)
Wherein a short side of the thin spring member (22; 78; 88; 90) along the frame member (14, 44) is folded back to an annular portion And the wires 30 and 32 are inserted into the annular portions 26C and 28C to support the short sides of the stylus spring members 22 and 78 and 88 Sheet (10). The method of claim 3,
Wires (60, 62) supporting the short side of the stylus spring member (52); And
Further comprising a mounting member (64) for mounting the wires (60, 62) to the frame members (16, 46)
The elastic members 52 are formed with annular portions 56C and 58C sewn by folding back the short sides of the elastic members 52 along the frame members 16 and 46, , 62; 84, 86) are inserted into the annular portions (56C, 58C) to support the short side of the stylus spring member (52). 9. The method of claim 8,
A pair of the wires 84 and 86 are arranged at intervals in the sheet width direction and curved portions 84B and 86B which are convex toward the sheet downward as viewed from the sheet width direction are formed on the rear side of the sheets 84 and 86 (10). 10. The method of claim 9,
Wherein the pair of wires (84, 86) are formed with curved portions (84B, 86B) curving in an arc shape in a direction away from each other on the rear side of the seat. 11. The method of claim 10,
Wherein the density of the warp yarns of the elastic fibers forming the stylus spring member (90) is denser than that of the seat back side on the front side of the seat, and is sparse on the rear side of the seat. 3. The method of claim 2,
The density of the warp yarns of the elastic fibers forming the elastic spring member 90 is denser than that between the central portion in the sheet width direction and both ends in the center portion and both ends in the sheet width direction, (10). 5. The method according to any one of claims 1 to 4,
Wherein the seat region includes a backing region (47) for supporting a back portion of a passenger, and the pair of frame members (46) are spaced apart from each other at a position surrounding the backing region (47) And a back side frame (46) extending in the vertical direction of the seat,
The vehicle seat (10)
Wires (102, 104) supporting the short side of the stylus spring member (106); And
Further comprising a mounting member for mounting the wire (102, 104) to the back side frame (46)
An annular portion sewn by folding back the short side of the elastic member 106 along the back side frame 46 is formed in the elastic member 106, and the wire 102, And is configured to support the short side of the stylus spring member (106). 14. The method of claim 13,
The wire (30, 32; 60, 62; 84, 86) includes: a first bend portion curved in an arc shape in a direction away from each other toward the intermediate portion from the sheet lower side; And the first curve portion curves in an arc shape so as to be convex from the lower side of the seat toward the upper side of the seat. 15. The method of claim 14,
Wherein the weft density of the weft yarns of the elastic fibers forming the thick spring member is denser than that of the second bend portion in the first bend portion and formed in the second bend portion.

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