JP2598791Y2 - Walk-in seat slide device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat slide device, and more particularly to a seat slide device having a walk-in mechanism.

[0002]

2. Description of the Related Art A walk-in seat slide device of this type is mainly used for a front seat of a two-door vehicle. When a rear seat occupant gets on and off, the seat back of the seat is tilted forward.
In conjunction with this operation, the seat slide device is unlocked and the entire seat is moved to the forefront, thereby making it easier for the occupant to get on and off.

[0003]

By the way, recently, it has been required to reduce the cost of each part, and it is desired to share as much of the conventionally used parts as possible when developing a new product. Therefore, conventionally, a seat slide device for a normal stroke width and a seat slide device for a walk-in have been separately manufactured. However, if a lock release mechanism can be attached to the seat slide device for a normal slide stroke width, the walk-in seat slide device can be used. There is no need to newly develop a seat slide device. However, a seat slide device with a normal slide stroke width has a reinforcing plate integrated with a plurality of claws for locking the upper rail with respect to the lower rail and a stopper that regulates the moving range of the upper rail, which is attached to the bottom of the lower rail. Therefore, when the lock is released during walk-in and the seat is moved to the front, the lock-off angle of the lock plate is the same for both manual operation and walk-in. A problem arises in which the walk-in function cannot be completely activated due to contact with the stopper of the reinforcing plate during the movement.

[0004]

In order to solve the above-mentioned problems, the present invention comprises a lower rail fixed to the floor of a vehicle body and an upper rail fitted to the lower rail and slidable back and forth. Left and right seat tracks having a lock mechanism for fixing the relative position of the upper rail to the lower rail are provided, and one of the seat tracks is rotatably held by a plurality of brackets and has a hook at a front portion. An operation shaft is provided, a reinforcing plate having a rising portion on the bottom surface of the lower rail is fixed to the other seat track, and a lock interlocking with a reclining device provided on the upper rail is mounted on the upper rail. In the walk-in seat slide device provided with a release mechanism, the upper part of the hook and the lock plate are further connected to the hook. Providing walk-in seat slide apparatus characterized by the linked with each connecting member the lower link pieces.

[0005]

[Function] The upper part of the hook of the operation shaft and the lock plate, and the lower part of the hook and the link piece are connected by wires, respectively, to increase the lock-off angle of the lock plate at the time of walk-in compared to the manual operation. Slide the seat to the forefront position without abutting the stopper.

[0006]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a view showing the present invention in which an unlocking mechanism is attached to a conventional seat track.
R is a C-shaped lower rail 2 fixed to the floor side of the vehicle body, and an inverted T cross section that engages with the lower rail 2 and slides back and forth.
An operating shaft 6 is rotatably held by brackets 4 and 5 on the upper rail 3. A coil spring 7 for urging the operation shaft 6 clockwise is provided at a rear end of the operation shaft 6. A hook 8 is fixed to a front portion of the operation shaft 6, and a lock tooth 9 is fixed to a rear portion. The lock teeth 9 are
The plurality of lock holes 2a provided on the lower rail 2 and the auxiliary lock teeth 3a provided on the bottom of the upper rail 3 are disengaged with the rotation of. In addition, the hook 8
Are provided with connection holes 10a and 10b on the upper side and the lower side.

[0007] The other seat track 1L comprises a lower rail 11 fixed to the floor side of the vehicle body and an upper rail 12 which is engaged with the lower rail 11 and is slidable. On the bottom surface of the lower rail 11, a reinforcing plate 13 comprising a plurality of claws 13a provided in the longitudinal direction and a rising portion 13b rising along the inner side surface of the seat track 1L.
Is fixed. The rear end of the rising portion 13b of the reinforcing plate 13 serves as a stopper portion 13c.

[0008] A bracket 18 is attached to the side of the upper rail 12.
, A shaft 19 is rotatably held. Further, a lock plate 21 for engaging and disengaging from the claw 13a of the reinforcing plate 13 is fixed to the shaft 19, and is engaged with the claw 13a by the urging of a coil spring 22 disposed at the rear end of the shaft 19. .

A lock release mechanism 14 is provided on the upper rail 12. This lock release mechanism 14
Is a bracket 15 provided on the upper rail 12.
And a link piece 17 rotatably provided by a drive shaft 16 provided on the bracket 15, and a cam piece 20 fixed to the shaft 19. The rear end of the link piece 17 and a reclining device (not shown) are connected by a wire. It is connected at 23 and is linked to the tilting of the reclining device. A spring 29 is provided at one end of the link piece 17 and one end of the bracket 15.

Further, a bracket 26 is provided at the front of the lower rail 11, and a bracket 2 is provided at the upper rail 12.
7 is attached, and an auxiliary spring 28 is disposed on both brackets 26 and 27.

Next, the operation of the present invention will be described. FIG.
When the seat is locked at an arbitrary position and the normal movement of the seat is performed by rotating the operation shaft 6 of the seat track 1R side counterclockwise, the lock teeth 9 fixed to the operation shaft 6 also move counterclockwise. The lock is released by being released from the auxiliary lock teeth 3a fixed to the bottom of the upper rail 3 and the plurality of lock holes 2a provided on the side wall of the lower rail 2.
At the same time, the lock plate 21 of the seat track 1L
As shown in FIG. 5, the lock plate 2 is connected to the lock plate 2 via the wire 25 with the rotation of the hook 8 fixed to the operation shaft 6.
1 is detached from the claw 13a of the reinforcing plate 13 fixed to the bottom of the lower rail 11. In this unlocked state, the occupant sitting on the seat adjusts the position of the seat by himself. Thereafter, when the operation shaft 6 is released, the coil spring 7 is released.
The seat is locked by the urging of and. The forward movement of the seat is restricted by the stopper 13c of the reinforcing plate 13.

Next, the operation when the walk-in mechanism is used will be described. As the reclining device (not shown) tilts forward, the link piece 17 is rotated counterclockwise via the wire 23 and the cam piece 20 is rotated clockwise. This cam piece 20
The lock plate 21 fixed to the shaft 19 is disengaged from the claw 13a of the reinforcing plate 13 with the rotation of. At this time,
As shown in FIG. 6, the lock-off angle of the lock plate 21 is set to be larger than the lock-off angle at the time of normal seat adjustment so as not to come into contact with the stopper 13c of the reinforcing plate 13.

At the same time, the lock teeth 9 are
With this rotation, the hook 8 fixed to the operation shaft 6 via the wire 24 is rotated counterclockwise to unlock the lock teeth 9. As described above, when the locks of both seat tracks are released, the seat is moved to the frontmost position by the auxiliary spring 28.

[0014]

As is apparent from the above description, the present invention has a lower rail fixed to the floor side of a vehicle body and an upper rail fitted to the lower rail and slidable back and forth. Left and right seat tracks having a lock mechanism for fixing the relative position of the upper rail are provided. One of the seat tracks is rotatably held by a plurality of brackets, and an operation shaft having a hook at a front portion is provided. At the same time, a reinforcing plate having a rising portion on the bottom surface of the lower rail is fixed to the other seat track, and a lock release mechanism interlocked with a reclining device provided on the upper rail is provided on the upper rail. In the walk-in seat slide device, the upper part of the hook and the lock plate are further connected to the lower part of the hook and the link. The walk-in seat slide device is characterized in that the pieces are connected by connecting members, and the walk-in seat slide device can be easily produced simply by assembling several parts to the conventional seat slide device. Most could be shared.

[0015]

[Brief description of the drawings]

1 is a perspective view showing the seat track of the present invention. FIG. 2 is a plan view showing the 1L side seat track of the present invention. FIG. 3 is a cross-sectional view of the 1R side seat track of the present invention. Fig. 5 Cross-sectional view of the present invention when the 1L side seat truck manual operation lock-off is performed.

[Explanation of symbols]

 1R, L Seat track 2, 11 Lower rail 3, 12 Upper rail 2a Lock hole 3a Auxiliary lock teeth 4, 5 Bracket 6 Operating shaft 7 Coil spring 8 Hook 9 Lock teeth 10a, 10b Connection hole 11 Lower rail 13 Reinforcement plate 13a Claw 13b Standing Raised portion 13c Stopper portion 14 Lock release mechanism 15 Flacket 16 Drive shaft 17 Link piece 18 Bucket 19 Shaft 20 Cam piece 21 Lock plate 22 Coil spring 23 Wire 24, 25 Wire 26, 27 Bracket 28 Auxiliary spring 29 Spring

Claims (1)

(57) [Scope of request for utility model registration] 1. A lower rail fixed to the floor side of a vehicle body, an upper rail slidably fitted to the lower rail and slidable back and forth, and a lock mechanism for adjusting and fixing a relative position of the upper rail with respect to the lower rail. Left and right 1 consisting of
In a walk-in seat slide device provided with a pair of seat tracks, an operation shaft for unlocking the lock mechanism is rotatably supported by one of the seat tracks by a bracket or the like, and the other of the operation shaft is A hook for locking an end of a connecting member connected to a lock plate of the seat track side locking mechanism and a link piece linked to the walk-in operation is fixed, and the other seat track has an upper. A reinforcing plate that integrates a plurality of claws for fixing the rail and a stopper that regulates the range of movement of the upper rail is fixed to the lower rail side, and adjusted and fixed only to the normal slide stroke width with the operation of the lock mechanism The other seat track is rotated during a walk-in operation. A link piece and a cam piece for displacing the lock plate of the lock mechanism with the rotation of the link piece to a position where the lock plate does not interfere with the stopper, and being connected to the lock mechanism of one seat track by operating the operation shaft. The lock mechanism of the other seat track connected via the member is released at the same time, and the position can be adjusted within the stroke range regulated by the stopper of the other seat track. The lock plate of the lock mechanism provided in the lock mechanism of the seat track is displaced to a position where it does not interfere with the stopper, and the operation shaft of one of the seat tracks is rotated via the link piece and the connecting member, and the lock mechanism is rotated. Is released, and both seat tracks move beyond the normal stroke width to the walk-in position. A walk-in seat slide device, which is configured to be movable up to