JPH0520205Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a vehicle seat. To explain in more detail, the present invention includes a seat cushion attached to the vehicle floor via a front-rear sliding mechanism, and a lower part of the seat cushion. is connected to the rear end of the
The present invention relates to a vehicle seat including a seat back whose upper portion is vertically movably attached to a back panel of a vehicle body via an adjuster having an elongated hole extending vertically.

[Conventional technology]

Conventionally, as shown in FIG. 4, in the case of a seat 1 used as a rear seat of a vehicle, etc., when the seat back 2 is tilted backwards, it is sufficiently tilted backwards due to the presence of a back panel 4 etc. of the vehicle body. Therefore, the seat cushion 3 is moved in the front and back direction by the front and rear slide mechanism 5, and the seat bag 2, which is connected to the rear end of the seat cushion 3 via the hinge part 8, is moved through the elongated hole extending in the vertical direction. 7 in the vertical direction using the adjuster 6,
There are cases where the entire body is in a reclining state (backward leaning state) (Utility Model Publication No. 60-31547, Special Publication No. 31547,
59-20491).

[The problem that the idea attempts to solve]

However, in the conventional seat 1, the seat cushion 3 is moved forward and the seat back 2 is moved forward.
When the lower end is moved forward by the adjuster 6, the angle formed between the seat back 2 and the seat cushion 3 becomes larger, so the seated person lies on his back, and his buttocks and lower back are pushed against the seat cushion 3. It is easy to move forward of the seat cushion 3, creating a gap between the rear end of the seat cushion 3 and the lower end of the seat back 2.For this reason, there are some models in which the seat back 2 is divided into parts in recent years, but it is not enough. It was not possible to support the seated person with a good sense of stability.

The purpose of this invention is to enable the seated person to be supported in a stable manner by moving the lower end of the seatback forward so that the buttocks and lumbar region of the seated person, the seat cushion, and the seatback are in close contact with each other without coming apart. In particular, it is an object of the present invention to provide a vehicle seat that can improve lumbar support for a seated person.

[Means to solve the problem]

The present invention was made in view of the above-mentioned problems, and includes a seat cushion attached to the vehicle floor via a front-rear sliding mechanism, a lower part connected to the rear end of the seat cushion via a hinge part, and an upper part connected to the rear end of the seat cushion through a hinge part. A vehicle seat comprising a seat back that is attached to a back panel of a vehicle body so as to be movable in the vertical direction via an adjuster having an elongated hole extending in the vertical direction, wherein a support member is stored in the seat back, and the support member is The seat bag is pressed forward by a link lever of the link mechanism, one end of a wire is connected to the link lever, the other end of the wire is connected to the movable rail side of the longitudinal slide mechanism, and the seat back is pressed forward. The support member is characterized in that the link lever can move the support member forward by moving the support member forward.

[Effect]

According to the present invention, a support member is attached to the seat back of the seat, and the support member is pressed in the front and back direction by a link lever of a link mechanism, and a wire is connected to the link lever, and the wire is connected to the link lever. Since the other end is connected to the movable rail side of the longitudinal slide mechanism, the wire is pulled by the forward movement of the seat cushion, and the link lever of the link mechanism is rotated.
The support member is moved forward by the rotation of the link lever.

〔Example〕

The vehicle seat according to the present invention will be described in detail below with reference to the drawings.

1 and 2 schematically show an embodiment of the present invention, and this vehicle seat 21 includes a seat cushion 22 attached to a vehicle body floor 25 via a longitudinal slide mechanism 24, The lower part is connected to the rear end of the seat cushion 22 via a hinge part 22b, and the upper part is attached to the back panel 26 of the vehicle body so as to be movable in the vertical direction via an adjuster 29 having a long hole 28 extending vertically. It is formed from a seat bag 23 made of

The adjuster 29 is a pin member 27 formed to protrude from a bracket 27 fixed to the back panel 26.
The seat back 23 has a slot 28 extending in the vertical direction, and the pin member 27a is slidably fitted into the slot 28.
8 and the pin member 27a of the bracket 27 can be constructed in a reversed manner.

The seat back 23 includes a seat frame 33 and an S-shaped spring 35 stretched over the seat frame 33.
and the seat frame 33 and the S-shaped spring 35.
It is formed from a pad material 37 made of foamed synthetic resin or the like attached to the front side of the pad, and a skin material 38 made of cloth material or the like covering the surface of the pad material 37.

A recess 41 is provided in the lower part of the back side of the pad material 37 of the seat back 23, and in this embodiment, this recess 41 is provided corresponding to the position of the seated person's waist, but the recess 41 is provided in the lower part of the seat back 23 in the width direction. It can also be formed along the

A support member 43 is housed in the recess 41, and a link mechanism 45 for pressing the support member 43 forward is provided. One end of the support member 43 is rotatably supported by the seat back frame 33 or a bracket provided on the seat back frame 33, and the other end is movable in the front-rear direction. Furthermore, support member 4
3 is not limited to one in which one end is pivotally supported, but may be any other as long as it can be moved in the front-back direction by a guide member, a link member, or other means.

The link mechanism 45 is connected to the seat back frame 3.
A link lever 48 is rotatably supported by a pivot pin 47 on a bracket 46 provided at the support member 4 .
Provided at a position abutting the lower end or upper end of 3,
One end 49 of a wire 49 is connected to the other end.
The other end 49b of the wire 49 is the front and back slide mechanism 24
The movable rail 24a is connected to the movable rail 24a. wire 4
The outer periphery of the wire 9 is covered with a flexible tube 51 so that the wire 49 can slide inside the flexible tube 51. This tube 51 is attached to the back surface of the seat bag 23 and along the movable rail 24a of the longitudinal slide mechanism 24.

Therefore, when the seat cushion 22 of the seat 21 is moved forward by the longitudinal slide mechanism 24,
As the movable rail 24a moves forward, the wire 49 is pulled forward, and the link lever 48 of the link mechanism 45 is moved around the pivot pin 47 as shown in FIG.
It is rotated counterclockwise, and as a result, the support member 43 is pressed forward, the pad material 38 at the lower part of the seat bag 23 is pressed forward, and the lower part of the seat bag 23 bulges forward. As the seat cushion 22 moves forward, the seat back 23 moves downward by sliding between the elongated hole 28 of the adjuster 29 and the pin member 27a, and is held in a backward tilted state by the forward movement of the hinge portion 22b. be done.

Conversely, when the seat cushion 22 is moved rearward, the seat back 23 is moved upward by an operation opposite to that described above, and the wire 49 is pulled back by a return spring (not shown) provided in the link mechanism 45. , the forward pressure by the link lever 48 is released, the support member 45 moves rearward, the lower portion of the seat back 23 no longer protrudes, and the seat is in a normal seating state.

[Effect of idea]

The above is the configuration of one embodiment of the vehicle seat according to the present invention. According to this configuration, the seat cushion is made to be movable back and forth by the front and rear sliding mechanism, and the seat back has an adjuster mounted on the back panel of the vehicle body. A support member installed at the bottom of the seat bag so as to be movable up and down through the link mechanism is pressed in the front and back direction by a link lever of the link mechanism, and a wire connected to the link lever is attached to the back and forth slide mechanism. Since the seat cushion is connected to the movable rail side of the seat cushion, the seat back can tilt backward when the seat cushion moves forward, and the lower part of the seat bag bulges diagonally upward, causing the buttocks and lumbar region of the seated person to overlap with the seat cushion. It is possible to obtain a vehicle seat in which the seat back and the seat back are in close contact with each other without coming apart, supporting the seated person with a good sense of stability, and particularly improving lumbar support for the seated person.

[Brief explanation of drawings]

Figures 1 and 2 schematically show an embodiment of the vehicle seat according to the present invention, and Figures 1 and 2 show the front and back of the seat cushion being moved forward by the front and rear slide mechanism. 3 is an explanatory side view of the seat, FIG. 3 is an explanatory view of the operation of the link mechanism, and FIG. 4 is an explanatory side view of a conventional rear seat. In the figure, 21... Seat, 22... Seat cushion, 22b... Hinge part, 23... Seat back, 24... Front and rear slide mechanism, 24a... Movable rail, 26... Back panel, 27... Bracket, 27a...Pin member, 28...Elongated hole, 29...
...Adjuster, 43...Support member, 45...
Link mechanism, 47... Pivot pin, 48... Link lever, 49... Wire.

Claims (1)

[Scope of utility model registration request] A seat cushion attached to the vehicle floor via a front-back sliding mechanism, and an adjuster whose lower part is connected to the rear end of the seat cushion via a hinge, and whose upper part has a long hole extending vertically into the back panel of the vehicle body. A vehicle seat is provided with a seat back that is attached in a vertically movable state via a support member, and a support member is housed in the seat back, and the support member is pushed forward of the seat back by a link lever of a link mechanism. one end of a wire is connected to the link lever, the other end of the wire is connected to a movable rail side of the front and back slide mechanism, and the link lever moves the support member forward as the seat cushion moves forward. A vehicle seat, characterized in that it is configured to allow