JPH10315818A - Lock releasing mechanism for slide rail - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the weight of a seat, and to increase degree of freedom of design by providing a lock piece to be slid in the vertical direction by a nearly L-shaped rotary lever, of which one end is connected to an upper rail and which is rotated by the horizontal slide of a release plate to be freely slid in the longitudinal direction thereof, and to be locked with a lock hole of a lower rail of a car body side freely to be released. SOLUTION: In a release plate 33, a seat side release lever 37 is arranged in an operation end 36 of a synthetic resin operating body fixed to an end of a vertical part 33A provided with a guide long hole 35A, in which a guide pin 35 of an upper rail 1 is to be inserted. The release plate 33 is slid backward by the operation of the release lever 37 to be turned in the fore and aft direction by pulling a seat side knob, resisting to the elastic force of a spring 34. A rotary lever 32 connected to a release lever 33B is turned in an arrow direction so as to move a lock piece 30 upward, and a lock tooth 31 is removed from a lock hole 21 so as to release the lock condition of the upper rail 1 with the lower rail 2. Weight of a seat is reduced, and since a stroke in the vertical direction is small, degree of freedom of design is increased.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock release mechanism for a slide rail for adjusting the front / rear position of an automobile seat,
More specifically, the present invention relates to a lock release mechanism for an upper rail of a slide rail for a jump-up sheet with respect to a lower rail.

[0002]

2. Description of the Related Art A conventional slide rail is composed of a lower rail fixed to the vehicle floor and an upper rail slidably fitted into the lower rail. By doing so, the upper rail is locked to the lower rail.

[0003] On the other hand, a conventional seat called a jumping seat is removably connected to the upper rail, and has an operation section on the seat side for unlocking by the lock piece. Then, by operating the operation unit, the jumping sheet is jumped forward or sideward so that luggage and the like can be placed at the seat installation location.

The above-mentioned lock piece is moved upward by a rotating lever pivotally mounted on the upper rail so as to be rotatable in the vertical direction by an operating member provided on the seat side, thereby moving the lock piece upward and locking the lock piece. It is configured to escape from the hole.

[0005]

Accordingly, since the lock state by the lock piece is released by pushing the rotary lever downward, when the load from the seat side is input to the rotary lever, the lock lever is locked. There is a possibility that it will be released.
Therefore, the seat side is reinforced so as not to cause such a case. Therefore, there is a problem that the sheet weight is increased by the reinforcement and it is difficult to perform the sheet lifting operation.

[0006] In addition, it is necessary to provide an operation member for pressing the rotary lever movably in the vertical direction on the seat side. Therefore, a space is required on the seat side in which the operation member can move in the vertical direction, and there is a problem that the degree of freedom in designing the seat is impaired.

Therefore, an object of the present invention is to eliminate such a problem caused by the conventional product.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, a slide rail unlocking mechanism according to the present invention is provided.
A release plate slidably attached to the upper rail in the length direction of the upper rail, an approximately L-shaped rotary lever connected to one end of the release plate and rotated by sliding the release plate in the horizontal direction, And a lock piece that slides up and down by the rotational force of the lever to engage and disengage with a lock hole provided in the lower rail on the vehicle body side. Therefore, the upper rail can be unlocked by sliding the release plate in the horizontal direction, which is the length direction of the upper rail.

Further, since the release lever provided on the seat side is disposed vertically on the operation end of the release plate, the release plate may be operated in response to a vertical load from the seat. Absent.

Further, the release plate is disposed below the top plate of the upper rail, and a passage for inserting the release lever on the seat side is provided at a position corresponding to the operating end of the release plate on the top plate. Since the opening is formed, the release plate is not exposed to the outside when the sheet is jumped up.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. (1) in the figure is the upper rail,
Reference numeral (2) denotes a lower rail fixed to the vehicle floor, and a plurality of lock holes (21) are formed at the bottom of the lower rail (2). The upper rail (1) side is provided in the lock hole (21). Lock teeth (31) of lock pieces (30) provided on
Is engaged, the upper rail (1) is locked to the lower rail (2).

The illustrated upper rail (1) is slidably inserted into the lower rail (2), and has rollers (10) and (10) and locking pieces (12) at lower front and rear portions thereof, and a top plate ( 13) to be welded through (11) (1)
1) Each of (16) is provided.

As described above, the top plate (13) is integrally formed with the upper rail (1), and the through hole (42A) for inserting the striker (42) hooked on the upper rail (1) is opened. Under the through hole (42A), a striker hook (4) constituting a seat lock mechanism (4) is provided.
0) is mounted on a shaft so as to be rotatable vertically.

In the drawing, (SC) is a sheet, (5) is provided on the bottom of the sheet (SC) and is placed on the top plate (13), and (50) is provided on the leg (5). Pedestal, (4
0A) is a slot for rotating a hook (40), (41) is an operation section for unlocking a seat lock mechanism (4), and (11).
A) and (12A) show fixing holes to which the protrusions (11) and (16) are inserted and welded, respectively.

The lower rail (2) of the upper rail (1)
The lock release mechanism for the release plate (3
3) a rotating lever (32), and a lock piece (30) which is vertically moved by the rotating lever (32) to be in a locked state and an unlocked state.

The lock piece (30) is provided on the top plate (13) from the through hole (14A) of the support piece (14) whose top (30B) is bent horizontally to the top of the upper rail (1). It is inserted through the port (30 '), and the rotary lever (32)
With the rotation of, it slides up and down.

The rotary lever (32) is a substantially L-shaped plate, and is rotatably mounted on the upper rail (1) by a pin (32C) so as to be vertically rotatable. One end (32A) is connected to the lock piece (30). It is inserted into the provided opening (32A).
The other end (32B) has a release plate (3
3), the spring (34) is connected, and the resilient force of the spring (34) urges the lock piece (30) in the locking direction.

The release plate (33) has a vertical portion (33A) with a guide slot (35A) through which a guide pin (35) provided on the upper rail (1) is inserted, and extends to the vertical portion (33A). And a horizontal portion (33B) disposed along the inner surface of the top plate (14).

An operating end (36) made of a synthetic resin operating body is fixed to an end of the vertical portion (33A), and a release lever provided on the seat (SC) side on the operating end (36) side. (37) is provided. The release lever (37) rotates in the front-rear direction by pulling a knob provided on the seat (SC) side.

The upper rail (1) is cut out so that the release lever (37) can be inserted downward, and the top plate (14) has a through hole (38) for inserting the release lever (37).
Is open.

The horizontal portion (33) of the release plate (33)
B) is guided by a guide member provided on the inner surface of the top plate (14), and the rotation lever (32) is connected to the tip.

When the release lever (37) on the seat (SC) side is actuated in the direction of the arrow in FIG.
The release plate (33) slides backward against the elasticity of 4).

Therefore, the rotation lever (32) connected to the release lever (33) rotates in the direction of the arrow to move the lock piece (30) upward. As a result, the lock teeth (31) escape from the lock holes (21), and the locked state of the upper rail (1) with respect to the lower rail (2) is released.

[0024]

According to the present invention, since the lock is released by sliding the release plate in the horizontal direction, the lock is not released by a downward load from the seat side. Therefore, like the conventional product,
There is no need to reinforce the sheet with a reinforcing member, and the weight of the sheet can be reduced.

Further, since the release plate is not exposed to the outside, the appearance quality of the slide rail is improved.

In addition, since the release of the lock is performed by sliding the release plate in the horizontal direction, the release lever on the seat for operating the release plate may be provided so as to be movable in the front-rear direction. Therefore, as compared with the related art in which the release lever on the seat side can be moved in the vertical direction, the stroke in the vertical direction is small, and the degree of freedom in designing the seat is increased.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view of the present invention.

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

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper rail 2 Lower rail 30 Lock piece 32 Rotating lever 33 Release plate

Continued on the front page (72) Inventor Yasuo Hirama 10-1, Amanuma, Hiratsuka, Kanagawa Prefecture Inside Nissan Shatai Co., Ltd. (72) Inventor Yoshihiko Yamauchi 771 Koizono, Ayase City, Kanagawa Prefecture Ikeda Bussan Co., Ltd. Person Masami Yonekura 771 Kozono, Ayase-shi, Kanagawa Prefecture Ikeda Bussan Co., Ltd. (72) Inventor Harutoshi Fujii 3-2-12-1 Matsubaracho, Akishima-shi, Tokyo Tachi-S Co., Ltd.

Claims (3)

[Claims] A release plate slidably mounted on the upper rail in a length direction of the upper rail; and a substantially L-shaped rotation which is connected to one end of the release plate and rotates by sliding the release plate in a horizontal direction. A lock release mechanism for a slide rail, comprising: a lever; and a lock piece that slides up and down by a rotational force of the rotary lever to engage and disengage with a lock hole provided in a lower rail on the vehicle floor side. 2. The slide rail lock release mechanism according to claim 1, wherein a release lever provided on a seat side is disposed vertically on an operation end of said release plate. 3. The release plate is disposed below the top plate of the upper rail, and a release lever on the seat side is inserted into a portion of the top plate corresponding to the operating end of the release plate. 3. The slide rail unlocking mechanism according to claim 2, wherein the opening is opened.