JPH0618833Y2 - Vehicle seat - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention allows a vehicle body to support a seat back so that the seat back can be tilted backward.
The present invention relates to a vehicle seat that can take a comfortable posture.

"Prior Art" Conventionally, as a vehicle seat of this type, for example, there is one as shown in Figs. 6 and 7.

That is, the seat cushion 3 is attached to the floor panel 1 via the slide device 2 so that the front and rear positions can be adjusted, the seat back 4 is divided into an upper back 5 and a lower back 6 in a substantially horizontal manner, and the lower end portion of the upper back 5 is divided. The central portion in the front-rear direction and the central portion in the front-rear direction at the upper end of the lower back 6 are connected to each other by a substantially horizontal pivot shaft 7 so as to be mutually bendable.

The upper back 5 is attached to the back panel 1a with the engagement between the pin 8 and the long hole 9, and the lower end of the lower back 6 is hinged to the rear end of the seat cushion 3.

[Problems to be Solved by the Invention] However, in such a conventional vehicle seat, when the seat cushion 3 is moved and adjusted to the forward position in order to achieve a comfortable posture, the lower end of the lower back 6 also moves forward and the lower back 6 The upper end of the upper back 5 is lowered, the upper back 5 is moved downward along the back panel 1a, and the comfortable posture shown in FIG. 7 is obtained.

In the comfortable posture shown in FIG. 7, the lower end front part of the upper back 5 and the upper end front part of the lower back 6 interfere with each other and bulge forward, giving a seated person a feeling of foreign matter and not comfortable to sit on. There was a problem.

Further, if the interference portion between the lower end front portion of the upper back 5 and the upper end front portion of the lower back 6 is shaved off, a recess is formed in the normal posture, the back of the seated person is not sufficiently supported, and the sitting comfort is not good.

The present invention has been made in view of such a conventional problem, and in a comfortable posture, the front lower end of the upper back and the upper front front of the lower back do not interfere with each other, so that the vehicle is extremely comfortable to sit on. The purpose is to provide a sheet for.

"Means for Solving the Problem" The gist of the present invention for achieving such an object is to provide a seat back in a comfortable posture by supporting the seat back on the vehicle body so that the seat back can be tilted backward. The upper back and the lower back each have a frame and a cushion body, and the upper back frame and the lower back frame are relatively centered about a substantially horizontal axis. Foldingly connected, the lower end front part of the cushion body of the upper back and the upper end front part of the cushion body of the lower back are connected, and one of the cushion body of the upper back and the lower back is connected to the one frame. The vehicle seat is characterized in that the vehicle seat is vertically movable.

[Operation] In the normal posture, the upper back and the lower back are in a state of extending substantially linearly, and are at predetermined vertical height positions.

To ensure a comfortable posture, bend the lower back and upper back in a substantially V shape around a substantially horizontal pivot, and the upper end front part of the lower back cushion body and the lower end front part of the upper back cushion body will be in mutual contact. Push each other. As a result, one cushion main body of the lower back and the upper back mounted to the frame so as to be movable up and down moves in a direction away from the other cushion main body, and the front upper end of the cushion main body of the lower back and the cushion main body of the upper back are separated. The lower end front part does not bulge forward and continues smoothly.

When the comfortable posture is returned to the normal posture, the upper front part of the lower back cushion body and the lower end front part of the upper back cushion body attract each other. As a result, one of the lower back and upper back cushion bodies that are vertically movable on the frame moves in the approaching direction, and the upper end front portion of the lower back cushion body and the lower end front portion of the upper back cushion body smoothly move. It is continuous and comfortable to sit on.

[Examples] Various examples of the present invention will be described below with reference to the drawings. In the various embodiments, the same parts are designated by the same reference numerals, and the duplicated description will be omitted.

1 to 3 show a first embodiment of the present invention.

As shown in FIGS. 1 and 2, the vehicle seat according to this embodiment is a separate type rear seat.

A seat cushion 30 is mounted on the floor 12 of the vehicle body 10 via a seat slide device 20 so that the front and rear positions can be adjusted.

The seat back 40a includes an upper back 40 and a lower back 5.
The lower end portion 51a of the lower back 50 is divided into upper and lower parts.
And a rear end portion 32 of the seat cushion 30 are connected to each other so as to be tiltable.

The upper back 40 includes a frame 41 and a cushion body 42.
And similarly, the lower back 50 has a frame 51
And a cushion body 52. Upper back 4
The frame 41 of 0 and the frame 51 of the lower back 50 are connected so as to be relatively bendable about a substantially horizontal pivot 43.

On the frame 41 of the upper back 40, the engagement pin 4 is provided on the rear side.
4 is fixed, and an engaging pin 44 is vertically movably fitted into a vertically elongated hole 18 of a connecting bracket 16 fixed to the back panel 14 side. The upper end of the cushion body 42 is hooked on the hook portion 41a of the frame 41, and the lower end of the cushion body 42 is fastened to the bracket 41b on the frame 41 side.

An insert wire 45 is built in the cushion body 42 of the upper back 40, and an insert wire 55 is built in the cushion body 52 of the lower back 50 in the same manner. A lower end portion of the insert wire 45 constitutes a substantially horizontal pivot shaft 46, and an upper end portion of the insert wire 55 is fitted onto the substantially horizontal pivot shaft 46 and constitutes a relatively tiltable hooking portion 56.

.. are fixed to both sides of the frame 51 of the lower back 50 at upper and lower positions, and vertically elongated holes 53 are formed in the guide member 52. A slide frame 60 is arranged between the frame 51 and the cushion main body 52, and engagement pins 61, 61 ... Are fixedly installed at upper and lower positions on the rear surface of the slide frame 60, and the slide frame 60 can be guided and moved in the vertical direction. Thus, the engagement pin 61 is movably fitted along the longitudinal direction of the vertically elongated hole 53 of the guide member 52.

A mounting plate 65 is vertically bridged and fixed to the slide frame 60, a hooking hole 66 is formed in the upper part of the mounting plate 65, and a positioning hole 67 is formed in the lower part. On the cushion body 52 side of the lower back 50, a pin 57 that can be engaged with a locking hole 66 and a pin 58 that can be fitted into a positioning hole 67 are provided.

Next, the operation will be described.

In the normal posture in FIG. 2, the front surface of the cushion main body 42 of the upper back 40 and the front surface of the cushion main body 52 of the lower back 50 are smoothly continuous, and the upper back 40 and the lower back 50 have a predetermined vertical height. In position.

When the seat cushion 30 is moved forward by the seat slide device 20 so as to be in a comfortable posture, the rear end portion 32 of the seat cushion 30 is moved to the lower end portion 51 a of the lower back 50.
Pull forward. Along with this, the frame 51 of the lower back 50 is lowered, and the entire lower back 50 moves forward and tilts backward.

When the frame 51 of the lower back 50 is lowered, the upper back 40 is pulled downward via the pivot 43, and the engagement pin 44
Slides in the vertically long hole 18 of the connecting bracket 16, and the entire upper back 40 descends along the back panel 14.

As a result, the upper back 40 and the lower back 50 are bent in a substantially V shape around the pivot 43. When bent in a substantially V shape, the lower end front portion 42a of the cushion body 42 of the upper back 40 and the upper end front portion 52a of the cushion body 52 of the lower back 50 are pressed against each other. The slide frame 60 is pushed downward with respect to the frame 51 by the pressing force, and the engagement pin 6 on the slide frame 60 side is pushed.
1 moves along the vertically long hole 53 of the guide member 52 on the frame 51 side. As a result, the cushion body 52 moves downward with respect to the frame 51.

As a result, the lower end front portion 42a of the cushion body 42 of the upper back 40 and the cushion body 52 of the lower back 50.
The upper end front portion 52a does not have a flesh-like shape, and does not bulge forward and smoothly continues.

Further, since the pivot shaft 46 of the insert wire 45 and the hooking portion 56 of the insert wire 55 are connected, the skins are appropriately stretched without being pulled more than necessary.

In this comfortable posture, the lower end front portion 42a of the cushion main body 42 of the upper back 40 and the upper end front portion 52a of the cushion main body 52 of the lower back 50 are smoothly continuous, so that the seated person's back is sufficiently relaxed without being pressed. be able to.

Further, when the comfortable posture is adopted, the cushion body 52 of the lower back 50 moves downward, and no gap is formed between the rear end portion of the seat cushion 30 and the lower end portion of the cushion body 52 of the lower back 50, so that small objects and the like can be removed from the gap. Fall,
When returning to the normal posture, small objects are not caught in the gap, which is convenient.

When the seat cushion 30 is moved rearward to return from the comfortable posture in FIG. 3 to the normal posture, the cushion main body 52 of the lower back 50 and the cushion main body 42 of the upper back 40 which are bent in a substantially V shape are shown in FIG. As shown in FIG. Thereby, lower back 5
The upper end front portion 52a of the cushion main body 52 of 0 and the lower end front portion 42a of the cushion main body 42 of the upper back 40 attract each other.

As a result, the cushion body 52 of the lower back 50, which is vertically movably mounted on the frame 51, moves in the approaching direction, and the upper end front portion 52a of the cushion body 52 of the lower back 50 and the lower end front portion of the cushion body 42 of the upper back 40 are moved. 42a is smoothly continuous, and it is comfortable to sit even in a normal posture.

4 and 5 show a second embodiment of the present invention.

In the present embodiment, the cushion body 42 is supported by the frame 41 of the upper back 40 via the slide frame 70 so as to be vertically movable, and the skin material 48 covering the front surface of the cushion body 42 of the upper back 40 and the cushion body of the lower back 50. A skin material 58 covering the front surface of 52 is connected.

The frame 51 side of the lower back 50 is supported so as to be vertically movable with respect to the back panel 14. Further, an adjusting mechanism 80 capable of adjusting a relative tilt angle is attached to the frame 41 of the upper back 40 and the frame 51 of the lower back 50.

In the adjustment mechanism 80, a screw member 81 is rotatably supported on the frame 41 side and the frame 51 side, and by rotating the screw member 81 forward and backward, the interval between the frame 41 side and the frame 51 side is adjusted. It has become.

In the comfortable posture, when the lower end front portion 42a of the cushion body 42 of the upper back 40 and the upper end front portion 52a of the cushion body 52 of the lower back 50 are pressed against each other, the cushion body 42 of the upper back 40 moves upward with respect to the frame 41. To do.

As a result, the lower end front portion 42a of the cushion body 42 of the upper back 40 and the cushion body 52 of the lower back 50.
The upper end front portion 52a does not become a flesh-like shape and does not bulge forward, and the skin material 48 on the upper back 40 side and the skin material 58 on the lower back 50 side smoothly continue.

[Advantage of the Invention] According to the vehicle seat of the present invention, the lower back front part of the upper back cushion body and the upper end front part of the lower back cushion body are connected to form the upper back cushion body and the lower back cushion body. Since either one of them was supported so that it could move vertically with respect to each frame,
In a comfortable position, when the lower end front part of the upper back cushion body and the upper end front part of the lower back cushion body are pressed against each other, one of them is pushed and moves in a direction away from the other, and the upper end front part of the lower back and the upper part. The lower part of the back and the front part of the back are smoothly continuous, and it is possible to fully relax without pressing the back of the seated person.

[Brief description of drawings]

1 to 3 show a first embodiment of the present invention. FIG. 1 is an exploded perspective view of a vehicle seat, FIGS. 2 and 3 are side views of the vehicle seat, and FIG. FIG. 5 and FIG. 5 show a second embodiment, respectively, a side view of a vehicle seat, and FIGS. 6 and 7 show a conventional example, which are side views of a vehicle seat, respectively. 10 ... Car body, 12 ... Floor 20 ... Seat slide device 30 ... Seat cushion 40a ... Seat back, 40 ... Upper back 41 ... Frame, 42 ... Cushion body 42a ... Bottom front part, 43 ... Axis 50 ...... Lower back 51 ...... Frame 52 ...... Cushion body 52a ...... Upper end front 60, 70 ...... Slide frame 80 ...... Adjustment mechanism

Claims (1)

[Scope of utility model registration request] 1. In a vehicle seat in which a seat back is supported by a vehicle body so as to be able to lean rearward, and a comfortable posture can be taken, the seat back is divided into an upper back and a lower back, and the upper back and the lower back are respectively a frame. A cushion main body, and connects the upper back frame and the lower back frame so as to be relatively bendable about a substantially horizontal pivot, and the lower back front portion of the upper back cushion main body and the lower back. The seat for a vehicle, wherein the cushion main body is connected to an upper front portion of the cushion main body, and one of the upper back and the lower back is attached to the one frame so as to be vertically movable.