JP2014104926A - Vehicle seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the seating side of a seat component member to be smoothly bent.SOLUTION: In a vehicle seat, the seating side of a seat component member 6 may be deformed in a bending manner. A frame shape body 10 is provided with a hinge portion 14 and thus may deform in a bending manner according to the deformation of the seating side of the seat component member 6.

Description

  The present invention relates to a vehicle seat including a frame member, a frame-like body attached to the frame member, and a planar body stretched on the frame-like body.

As this type of vehicle seat, a vehicle seat disclosed in Patent Document 1 is known. The vehicle seat includes a substantially arch-shaped frame member, a frame-shaped body, and a planar body.
The frame-like body is a frame body (typically a resin molded product) having a shape that follows the outer shape of the frame member, and can be assembled along the outer shape of the frame member. The planar body is a planar material stretched in the frame body and can be formed of a cloth or a net body.
In the known technique, the occupant can be elastically supported by the planar body after assembling the frame body on the seating side of the frame member.

By the way, in this kind of seat configuration, from the viewpoint of improving the comfort of the seat, a folding mechanism or the like may be provided on the seat back (frame member) so that the seat can be bent halfway.
For example, in the vehicle seat disclosed in Patent Document 2, the seatback upper part (the part that supports the occupant's scapula) is moved forward in the seating side with respect to the lower part of the seatback (the part that supports the occupant's waist) by the folding mechanism. Tilt (turn).
In this way, the seat back side of the seat back can be bent and deformed in the middle, and the seat back can be partially protruded to change the seating surface shape of the seat according to the posture of the occupant (configuration that excels in seat comfort) Is).

JP 2010-240276 A JP 2008-254645 A

And also in the vehicle seat of patent document 1, it is desirable that the seating side of the seat back can be bent halfway in consideration of the comfort of the seat.
However, the frame member of Patent Document 1 is assembled with a frame-like body (a resin molded product that is relatively difficult to bend and deform). For this reason, in the structure of patent document 1, while it was difficult to bend a frame member smoothly, there existed a possibility that an excessive load might be applied to a frame-shaped body, etc. (it is a structure unsuitable for bending deformation). there were).
The present invention has been devised in view of the above points, and the problem to be solved by the present invention is to make it possible to smoothly deform the seating side of the seat constituent member into a bent shape.

As means for solving the above-mentioned problems, the vehicle seat of the first invention has a seat constituent member such as a seat cushion or a seat back. The seat component includes a frame-shaped frame member that forms a seat skeleton, a frame-shaped body that can be attached along the outer shape of the frame member, and a planar body that is stretched on the frame-shaped body and can support an occupant Prepare.
In the present invention, the seating side of the seat constituent member is appropriately deformed into a bent shape, but at this time, it is desirable that the seating side can be smoothly deformed.
Therefore, in the present invention, a hinge portion is provided in the frame-like body so that it can be bent and deformed according to the deformation on the seating side of the seat constituent member.

The vehicle seat of the second invention is the vehicle seat of the first invention, and the planar body is integrated on the inner peripheral side of the frame-like body. And the frame-shaped body has a first part constituting one side of the frame-like body, a second part constituting the other side of the frame-like body different from the one side, and a hinge disposed between the first part and the second part. Part.
Therefore, in the present invention, the first portion and the second portion are connected by the planar body, so that the strength reduction of the frame-like body at the hinge portion can be avoided as much as possible.

The vehicle seat of the third invention is the vehicle seat of the first invention or the second invention, wherein the frame member has an extrusion mechanism that pushes the frame-shaped body toward the seating side of the seat constituent member.
And by the extrusion mechanism, it was set as the structure which deform | transforms the seat side of a sheet | seat structural member into a bending shape by extruding at least one part position of a 1st site | part, a 2nd site | part, and a hinge site | part, and making a frame-shaped body bend and deform | transform.
In the present invention, the seating side of the seat constituent member can be deformed without requiring significant improvement of the frame member itself (with a relatively simple configuration).

  According to the first aspect of the present invention, the seating side of the seat component can be smoothly deformed into a bent shape. According to the second invention, the seating side of the seat component can be smoothly deformed into a bent shape while avoiding the strength reduction of the frame-like body as much as possible. According to the third aspect of the present invention, the seating side of the seat component can be smoothly deformed into a bent shape with a relatively simple configuration.

It is a partially exploded perspective view of a vehicle seat. It is a perspective view of a frame-shaped body part. It is a front view of a frame-shaped body. It is a side view of a part of the seat back. FIG. 6 is a partially exploded perspective view of a vehicle seat according to a second embodiment. It is a perspective view of a part of frame member concerning Example 2. FIG. It is a side view of a part of the seat back according to the second embodiment.

Hereinafter, embodiments for carrying out the present invention will be described with reference to FIGS. In each of the drawings, a reference symbol F is attached to the front of the vehicle seat, a reference symbol B is attached to the rear of the vehicle seat, a reference symbol UP is provided above the vehicle seat, and a reference symbol DW is provided below the vehicle seat.
The vehicle seat 2 in FIG. 1 has a seat component (seat cushion 4, seat back 6, headrest 8).
Here, the seat back 6 is connected to the seat cushion 4 so as to be able to be tilted. The headrest 8 is attached to the upper portion of the seat back 6 via a pair of stay members 8a (bar-shaped).

<Example 1>
The seat back 6 of the present embodiment has a configuration (frame member 6F, frame body 10, and plane body 20) described later, and can be displaced from a basic posture to a bent posture.
The seat back 6 in the basic posture is connected to the seat cushion 4 in an upright manner (see FIG. 1). Further, in the seat back 6 in the folded position, the upper side tilts forward toward the front of the seat (seat side), and the seat side of the seat back 6 is deformed into a bent shape (see FIG. 4).
And in the seat back 6 of a present Example, after attaching the frame-shaped body 10 to the frame member 6F, a passenger | crew is supported by the planar body 20 in the frame-shaped body 10. FIG. In this type of seat configuration, it is desirable that the seat back side of the seat back 6 can be smoothly deformed.
Therefore, in this embodiment, the seating side of the seat back 6 can be smoothly bent into a bent shape with the configuration described later. Hereinafter, each configuration will be described in detail.

(Frame member)
The frame member 6F is a frame-like member (substantially reverse U-shape in a front view) that forms a seat skeleton, and includes an upper frame 6a, a pair of side frames 6b, and a rotating portion 6c (a center folding mechanism) ( (See FIGS. 1 and 4).
The upper frame 6a is a pipe-like member (substantially inverted U shape in front view) that forms the upper part of the seat. A pair of brackets 6d (cylindrical members) are attached to the upper frame 6a with a predetermined interval, and a stay member 8a can be inserted therein.
Each of the pair of side frames 6b is a flat plate member that forms a seat side, and is attached to the lower end of the upper frame 6a.
And the rotation part 6c is a site | part which connects the free end of the top frame 6a, and each side frame 6b upper end rotatably. In the present embodiment, for example, a cylindrical portion protruding in the sheet width direction is provided at the upper end of each side frame 6b, and is rotatably inserted into the free end (hole) of the upper frame 6a (the rotating portion 6c is formed). To do). Then, by rotating the upper frame 6a forward of the seat with respect to the side frames 6b with the rotation portion 6c as the rotation center, the seat back 6 can be displaced from the basic posture to the folded posture.

(Frame body)
The frame-shaped body 10 is a frame-shaped member (the center is hollow) that follows the outer shape of the frame member 6F, and has a first portion 11, a second portion 12, and a hinge portion 14 (described later). 1 to 4).
Here, the first portion 11 is a portion (substantially reverse U-shape in front view) that forms the upper side of the frame-like body 10 and can be arranged along the upper frame 6a. Moreover, the 2nd site | part 12 is the site | part (substantially U shape by a front view) which makes the lower part side of the frame-shaped body 10, and can be arrange | positioned along each side part frame 6b. Each part of the present embodiment is substantially U-shaped or substantially L-shaped in a sectional view, and can be fitted to the frame member 6F (sitting side). In addition, a pair of dent parts 11a are formed in the 1st site | part 11, and the bracket 6d can be each fitted.
And the frame-shaped body 10 of a present Example is a resin molded product, and it can form each part by integral molding so that it may mention later. Here, the material of the frame 10 is not particularly limited, and examples thereof include thermoplastic resins (polypropylene, vinyl chloride resin, polyethylene) and thermosetting resins (phenol resin, melamine resin, epoxy resin, urea resin).

(Hinge part)
The hinge part 14 is a part that enables the frame-shaped body 10 to bend and deform, and can be formed between the first part 11 and the second part 12 (position that can face the rotating portion 6c).
The hinge part 14 (integral hinge) of the present embodiment is formed on both sides of the frame-like body 10 and has a groove part 14a on the seat front side (seat side) and a notch part 14b on the seat rear side.
The groove portion 14 a is a linear concave portion extending in the sheet width direction on the front surface of the frame-like body 10, and is disposed at a position that divides the first portion 11 and the second portion 12. Moreover, the notch part 14b is a substantially rectangular recessed part on the side surface of the frame-like body 10, and is drilled from the back of the seat to the front and is disposed facing the groove part 14a.

(Planar body)
The planar body 20 is a planar member (typically a member constituting a seating surface) that elastically supports an occupant, and is preferably elastically extendable (see FIG. 1).
Here, the material of the planar body 20 is not particularly limited, and examples thereof include fabric (woven fabric, knitted fabric, non-woven fabric), leather (natural leather, synthetic leather), and net body (member obtained by weaving fibers in a mesh shape). In the net body, fibers (natural fibers or synthetic fibers) may be entangled two-dimensionally or the fibers may be entangled three-dimensionally.

In the present embodiment, the planar body 20 (net body) can be attached to the center (hollow shape) of the frame body 10 (see FIG. 1).
Here, a method for attaching the planar body 20 to the frame body 10 is not particularly limited. For example, in this embodiment, when the frame-shaped body 10 (made of resin) is molded, the planar body 20 is stretched in a cavity of a mold (not shown). Then, by pouring a molding raw material (molten resin or the like) into the molding die, the planar body 20 can be integrally attached to the inner surface side of the frame-shaped body 10 while molding the frame-shaped body 10. At this time, the resin of the frame-like body 10 enters and solidifies into the edge (mesh) of the planar body 20, so that the peripheral end of the planar body 20 can be integrated into the frame-like body 10 relatively firmly. .
In this embodiment, the frame body 10 and the planar body 20 are integrated as described above, so that the first part 11 and the second part 12 are bridged over the entire inner circumference of the frame body 10. ) The planar body 20 is integrated. In this way, the first portion 11 and the second portion 12 are connected by the planar body 20, so that the strength reduction of the frame-like body 10 at the hinge portion 14 can be avoided as much as possible.

[Assembly of seat back]
With reference to FIGS. 1, 3, and 4, the frame body 10 is attached to the frame member 6 </ b> F so that the occupant can be supported by the planar body 20 in the frame body 10.
In the present embodiment, the first portion 11 is assembled to the upper frame 6a and the second portion 12 is assembled to each side frame 6b while the frame-like body 10 is stacked on the seating side of the frame member 6F. At this time, the other first part 11 and the second part 12 are respectively fixed to the frame member 6F while the hinge part 14 is disposed facing the rotating part 6c.
Here, the fixing method of the frame-like body 10 is not particularly limited, but examples thereof include adhesion, fusion, fastening such as bolting, and locking to the periphery of the frame member 6F. For example, in this embodiment, the frame-like body 10 is fastened and fixed to the frame member 6F. At this time, the fastening points FP are not particularly limited, but a plurality of fastening points FP can be provided at appropriate intervals in each part except the hinge part 14.

[Seatback posture displacement]
With reference to FIGS. 1 and 4, the seat back 6 is displaced from the basic posture to the folded posture according to the posture of the occupant (the seating side is deformed into a bent shape).
At this time, in the frame member 6F, the upper frame 6a tilts forward with respect to the side frame 6b with the rotating portion 6c as the center. By the bending operation of the frame member 6F, the first portion 11 tries to bend the second portion 12 following the upper frame 6a.
At this time, in the present embodiment, the first part 11 can bend smoothly with respect to the second part 12 around the hinge part 14 (the frame-like body 10 can bend and deform smoothly). For this reason, in the present embodiment, the frame-like body 10 is bent and deformed following the bending of the frame member 6F, so that the seating side of the seat back 6 can be smoothly bent into a bent shape.

As described above, in this embodiment, the frame-like body 10 is provided with the hinge portion 14 so that it can be bent and deformed according to the bending deformation of the seat back 6 on the seating side.
In the present embodiment, the first portion 11 and the second portion 12 are connected by the planar body 20, so that the strength reduction of the frame-like body 10 at the hinge portion 14 can be avoided as much as possible.
For this reason, according to the present Example, the seating side of the seat back 6 can be smoothly bent and deformed.

<Example 2>
Since the vehicle seat of the second embodiment is substantially the same as the basic structure of the first embodiment, the same reference numerals are given to the common structures and the detailed description is omitted.
The frame-shaped body 10 of the present embodiment has a first part 11, a second part 12, and a hinge part 14 (see FIG. 5). The frame member 6F has an upper frame 6a and a side frame 6b fixed to be non-rotatable (a configuration in which the rotating portion 6c is omitted), and has an extrusion mechanism 30 (see FIGS. 5 to 7).
The push-out mechanism 30 is a mechanism that pushes the frame-shaped body 10 toward the seating side of the seat back 6, and includes a push-out arm 32, a mounting portion 34, a connecting portion 36, and a mechanism portion 38.
The extrusion arm 32 is a cylindrical portion that is long in the sheet width direction, and can be attached with a pair of brackets 6d. The attachment portion 34 is a substantially inverted L-shaped (side view) flat plate material and can be attached to the frame member 6F. The connecting portion 36 is a ball screw-like portion, and is connected to the push-out arm 32 (center) in an orthogonal shape and extends in the seat front-rear direction. And the mechanism part 38 is a site | part which can fit (screwing) the edge part of the connection part 36, and can rotate (or reversely rotate) the connection part 36, and can extend (or shorten) in the seat front-back direction. .

In this embodiment, an extrusion mechanism 30 is attached to the upper frame 6a (center) so that the extrusion arm 32 can be extruded in the front-rear direction of the seat (see FIGS. 6 and 7).
In this state, the first portion 11 is assembled to the upper frame 6a and the second portion 12 is assembled to the side frame 6b while the frame-like body 10 is stacked on the frame member 6F (sitting side). Then, only the second part 12 is fastened and fixed to the frame member 6F while the first part 11 and the upper frame 6a are held to be relatively movable.
And the 1st site | part 11 is made to incline forward with respect to the 2nd site | part 12 by pushing the extrusion arm 32 ahead of a sheet | seat by the mechanism part 38. FIG. At this time, in this embodiment, the first portion 11 is smoothly bent with respect to the second portion 12 around the hinge portion 14 while being separated from the frame member 6F (the frame-like body 10 is smoothly bent and deformed). . The seating side of the seat back 6 can be smoothly deformed into a bent shape by the bending deformation of the frame body 10 alone.
In this embodiment, the seating side of the seat back 6 can be bent into a bent shape without requiring significant improvement of the frame member 6F (with a relatively simple configuration).

The vehicle seat of the present embodiment is not limited to the above-described embodiment, and can take other various embodiments.
(1) In the present embodiment, the middle folding mechanism is exemplified as the folding mechanism of the frame member 6F, but the type of the folding mechanism is not limited. For example, a two-stage hinge mechanism can be exemplified as the bending mechanism.
Further, the seating side can be bent by a mechanism separate from the frame member. For example, the seat back 6 (seat side) can be bent (bent in a mountain) by a mechanism such as a lumbar support. The side portion of the seat back 6 (seat side) can be protruded (bent) with respect to the center by a mechanism such as a side support mechanism. The seating side of the seat constituent member can be in various bent states according to various mechanisms.

(2) Moreover, in this embodiment, although the structure (shape, dimension, etc.) of the frame-shaped body 10 and the planar body 20 was illustrated, the structure of the same member can be suitably changed according to a sheet | seat structure. For example, in the present embodiment, the hinge part 14 having the groove part 14a and the notch part 14b is illustrated, but the configuration of the part is not intended to be limited. For example, as a hinge part, a part having a hinge-like structure, a gap formed by dividing the first part and the second part, a rotating shaft that rotatably connects the first part and the second part, the first part and the second part The elastic part (part which can be bent and deformed elastically) which connects a part can be illustrated. Further, when there are a plurality of hinge parts to be bent and deformed (in the case of a two-stage hinge mechanism or the like), a plurality of hinge parts can be appropriately provided on the frame-like body.
(3) In this embodiment, the frame body 10 and the planar body 20 are integrated at the time of molding. However, the planar body can be attached after the frame body is molded. In this case, the frame body can be made of metal.

(4) Moreover, in this embodiment (Example 2), the structure which extrudes the 1st site | part 11 in the extrusion mechanism 30 was illustrated, However, At least 1 of the 1st site | part 11, the 2nd site | part 12, and the hinge site | part 14 is shown. It can also be extruded.
(5) In the present embodiment, the seat back 6 has been described as an example, but the configuration of the present embodiment can be applied to various seat components such as a seat cushion. For example, when the seat cushion is provided with a tilt mechanism and the seat cushion (front side) can be bent, the configuration of the present embodiment can be suitably applied.

2 Vehicle seat 4 Seat cushion 6 Seat back 8 Headrest 6F Frame member 6a Upper frame 6b Side frame 6c Rotating part 10 Frame-like body 11 First part 12 Second part 14 Hinge part 14a Groove part 14b Notch part 20 Planar shape Body 30 Extrusion mechanism

Claims (3)

With seat components such as seat cushions and seat backs,
The seat constituent member is a frame-shaped frame member that forms a seat skeleton, a frame-shaped body that can be attached along the outer shape of the frame member, and a planar body that is stretched over the frame-shaped body and can support an occupant A seat for a vehicle in which a seating side of the seat constituent member is deformable in a bent shape,
A vehicle seat in which a hinge portion is provided in the frame-like body so that it can be bent and deformed according to deformation of a seating side of the seat constituent member.   The planar body is integrated on the inner peripheral side of the frame-like body, and the frame-like body is different from the first portion constituting the one side of the frame-like body and the one side. A second part constituting the other side of the body, and the hinge part disposed between the first part and the second part, wherein the first part and the second part are connected by the planar body. The vehicle seat according to claim 1. The frame member has an extrusion mechanism that pushes out the frame-like body on the seating side of the seat constituent member,
By the pushing mechanism, at least a part of the first part, the second part, and the hinge part is pushed out to bend and deform the frame-like body, thereby deforming the seating side of the seat constituent member into a bent shape. The vehicular seat according to claim 1 or 2 constituted.

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