JPH11103965A - Tumble seat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the interference of a seat cushion to a seat back by arranging linkage, or the like disposed between a cushion frame and a base plate and supporting the tumble state and the using state of a seat so as to kick up the sheet cushion into a forward standing state while moving. SOLUTION: At the time of pushing and moving an operation lever 61 forward against the elasticity of a spring 61B, the lever 61 slides to move a guide pin 60B upward to the hole edge of an arc-formed unlocking hole 61A. As a lock shaft 60 is moved upward with it, a locked state made by a locking lever 62 is released. After then, at the time of lifting the front side of the seat cushion SC, the linkage 3 is turned and a hinge 10 is rotated while moving to the front side of a guide hole 20 by this linkage 3. As is kicked up in a standing state while moving forward as a whole at the time of kicking up then, the seat cushion SC never interferes the seat surface of the seat back SB.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001] The present invention relates to an automobile seat (seat), and more particularly to a tumble seat in which a seat cushion (seat portion) can be lifted upright around a rear side as a center of rotation.

[0002]

2. Description of the Related Art A conventional tumble of this kind has an advantage that a seat cushion can be effectively used as a loading platform by jumping up a seat cushion along a seat back (backrest).

[0003]

When the seat cushion is jumped up, the seating surface of the seat cushion interferes with the seating surface of the seat back. The seating surface does not interfere with the seat back.

[0004] Therefore, since the seat back is lowered, the width in the front-rear direction of the seat cushion standing upright and the seat back in the rear-down state is widened, and the space behind the seat back is reduced.

[0005] Therefore, an object of the present invention is to eliminate such disadvantages of the conventional tumble sheet.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a pair of left and right base plates having a long slide hole in the front-rear direction. A cushion frame having hinge pins slidably engaging in the direction on the rear left and right outer surfaces, and a link provided between the cushion frame and the base plate to hold a seat in a tumble state and a use state. Is what you do.

When the seat cushion is lifted up, the seat cushion is lifted upright while moving forward in the guide hole of the base plate, so that the seat cushion does not interfere with the seat back.

Further, the left and right base plates are integrally connected by a connecting shaft, and an upper rail which is slidably fitted in a lower rail of a slide rail provided on the vehicle floor side in a front-rear direction is attached to the connecting shaft. The jumping position can be adjusted in the front-back direction.

Further, the link is formed in a substantially rectangular shape, one end of which is pivotally connected to the cushion frame and the intermediate portion thereof is pivotally connected to the base plate, and the other end of the link releases the lock of the cushion frame to the base plate. Since the lock release mechanism is mounted, the lock can be released accurately.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of the present invention will be described.
This will be described with reference to the drawings. FIG. 1 shows a tumble seat according to the present invention, in which (SC) is a seat cushion showing a tumble (jumping) state, and (SB) is a seat back attached to a base plate (2) (2) by a reclining mechanism. Are respectively shown.

A pair of left and right base plates (2) (2)
Are integrally connected by connecting shafts (23) and (23),
It is slidably mounted in the front-rear direction by slide rails provided on the connecting shafts (23).

A guide hole (20) which is long in the front-rear direction is formed in the upper part of the base plate (2).
An operation lever (61) constituting a lock release mechanism for operating the lock shaft (60) is provided on the outer surface of the one base plate (2). In the figure, (4) is the connecting shaft (2
3) a bracket provided on (23) for fixing the upper rail of the slide rail; and (5) a lower rail fixed to the vehicle floor side and fitted with the upper rail so as to be slidable in the front-rear direction.

FIG. 2 shows a main part of the present invention. In FIG. 2, (1) shows a cushion frame of a seat cushion (SC), and hinge pins (10) ( 10) are protruded, and each of the hinge pins (10) (10) is rotatable vertically in the guide hole (20) of the base plate (2).
Engage slidably in the front-rear direction.

An intermediate portion of a link (3) (3) is pivotally attached to each base plate (2) (2) by a pivot pin (30) so as to be vertically rotatable. One end is pivotally connected to the cushion frame (1) by a pin (31) as shown by a chain line.
In the figure, (30A) is an insertion hole of the pivot pin (30), (31A).
B) is a guide pin (60) provided at the other end of the link (3).
B) and (60A) insertion holes are shown respectively.

The base plates (2) and (2) include
As shown in FIG. 3, a through hole (30B) through which the pivot pin (30) is inserted is opened, and arc-shaped operation holes (21) (21) centered on the through hole (30B) are opened. Have been.

The pair of left and right brackets (4) (4 ') are mounted on the front and rear connecting shafts (23) (23), and the upper ends of the slide rails shown in FIG. The rail (7) is fastened, and the upper rail (7) is a long lower rail (5) fixed to the vehicle floor.
(5 ') is slidably fitted.

A lock lever (62) is provided on one of the brackets (4).
2) lock the lock shaft (60),
The rotation of one link (3) is restricted. Note that FIG.
As shown in the figure, the lock lever (62) has a through hole (62A).
The lock shaft (60) is inserted into the long holes (44) and (62B) by rotating around the pin inserted in (42).

The lock shaft (60) has a guide pin (60A) connected at one end to the bracket (4) and at the other end through an operation hole (21) of one base plate (2). 61) is inserted through the lock release hole (61A) opened.

As shown in FIG. 3, a pin (2) provided on the outer surface of the base plate (2) is attached to the operation lever (61).
6) A through hole (61E) (6
1D) is opened, and a spring (61) stretched between the projection (61C) and the locking projection (72) of the base plate (2).
The operation lever (61) is urged rearward by the elasticity of B).

In FIG. 3, (23A) in FIG.
Are through holes through which the connecting shafts (23) and (23) pass, and (24) and (2)
4) indicates nuts for mounting the reclining device.

The upper rail (7) slides in the lower rail (5) by the roller (71), and the lock teeth (72) are inserted into the lock holes (50) of the lower rail (5) as shown in FIGS. The lower rail (5) is locked by being engaged with the lower rail (5) when the locking piece (73) abuts against the protruding piece (51) fixed in the lower rail (5).
Is restricted to a certain range.

FIG. 4 shows the use state of the seat cushion (SC), and shows the hinge pin (1) of the seat cushion (SC).
0) is a guide hole (20) provided in the base plate (2).
And is held in use by a link (3).

That is, the guide pin (60B) provided at the other end of the link (3) is connected to the operation hole (2) of the base plate (2).
Since the lock shaft (60), which is located at the lower end of (1) and is integral with the guide pin (60B), is locked by the lock lever (62), the seat cushion (SC) does not jump due to impact or the like.

FIG. 5 shows a state in which the seat cushion (SC) is lifted up from the state shown in FIG. ) Slides, whereby the guide pin (60B) moves upward to the edge of the arc-shaped unlocking hole (61A). Accordingly, the lock shaft (60) moves upward, so that the lock state by the lock lever (62) is released.

Thereafter, when the front side of the seat cushion (SC) is lifted, the link (3) rotates, and the hinge pin (10) is moved by the link (3) to the guide hole (2).
It rotates while moving to the front side of 0).

Therefore, the seat cushion (SC)
At the time of jumping up, the whole is jumped up in a standing state while moving forward, so that it does not interfere with the seating surface of the seat back (SB).

The front and rear positions of the seat cushion (SC) where the seat cushion (SC) can jump up are restricted to a fixed value. That is,
The lower rail (5) can jump up to a position where the locking piece (73) of the upper rail (7) abuts against the protrusion (51) of the lower rail (5), and has moved forward with respect to the protrusion (51) of the lower rail (5). Sometimes, it is configured not to be able to jump up.

[0028]

As described above, the present invention is constructed as described above, and when the seat cushion is jumped up, the seat cushion is jumped upright while moving forward. Therefore, the seat cushion can jump up without interfering with the seat back, and the disadvantage of the conventional product can be eliminated.

Further, the base plate on which the seat cushion is mounted can be jumped up and down by the slide rail at the front and rear positions where it can be jumped up.

Further, since the lock releasing mechanism is provided at the other end of the link, the structure is simple and the lock is reliably released.

[Brief description of the drawings]

FIG. 1 is a perspective view of the present invention.

FIG. 2 is a perspective view of a main part.

FIG. 3 is an exploded perspective view.

FIG. 4 is a sectional view of a use state of the seat cushion.

FIG. 5 is a cross-sectional view of the seat cushion in a jumped state.

[Explanation of symbols]

 SC Seat cushion 1 Cushion frame 2 Base plate 3 Link 10 Hinge pin 20 Slide hole 23 Connecting shaft 5 Lower rail of slide rail 7 Upper rail of slide rail

Claims (3)

[Claims] 1. A pair of left and right base plates each having a slide hole elongated in the front-rear direction, and hinge pins that are rotatably vertically movable and slidably move in a front-rear direction are fitted in the slide holes of the base plate. A tumble seat comprising: a cushion frame having a tumble state and a use state provided between the cushion frame and the base plate to maintain a tumble state and a use state of the seat. 2. The left and right base plates are integrally connected with a connecting shaft, and an upper rail is fitted to the connecting shaft so as to be slidably fitted to a lower rail of a slide rail provided on a vehicle floor side in a front-rear direction. 1. The tumble sheet according to 1. 3. The link is formed in a substantially rectangular shape, one end of which is pivotally connected to the cushion frame and the intermediate portion is pivotally connected to the base plate, and the other end of the link is provided with a lock of the cushion frame to the base plate. 3. The tumble seat according to claim 2, further comprising a lock release mechanism for releasing the lock.