JPH0238838Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a seat slide device mounted on a vehicle such as an automobile.

[Conventional technology]

Seats installed in automobiles are equipped with seat slide devices so that the front and rear positions can be adjusted according to one's physique and the like. Conventional devices of this type are
It has a lower rail fixed to the floor side of the vehicle body and an upper rail slidably fitted to the lower rail. The member on the lower rail side is provided with a plurality of lock engaging portions along the longitudinal direction of the rail, and the member on the upper rail side is provided with a lock lever that selectively fits into any of the lock engaging portions. These lock levers, lock engaging portions, etc. constitute a lock mechanism.

In addition, in the case of seats used in two-door cars,
When a rear seat passenger gets in or out of the vehicle, it is necessary to fold the backrest of the front seat forward and slide the entire seat forward. With this type of seat, if the seat slides forward at full stroke when adjusting its longitudinal position, not only will it be difficult to adjust the position, but the seat will become unstable during adjustment, which is dangerous. For this reason, when adjusting the front and rear positions, the seat is allowed to slide back and forth only within a limited stroke range, and only during so-called walk-ins, the seat can be moved to the front position with a full stroke.
Therefore, in addition to the lock mechanism described above, a mechanism dedicated to walk-in is required.

[Problem that the invention attempts to solve]

Like the conventional seat slide device mentioned above,
A system that separately includes a dedicated walk-in mechanism and lock mechanism not only requires many parts and installation space, but also requires a large number of man-hours when assembling it to the vehicle body.

However, if you omit the walk-in mechanism, the seat will slide forward with a full stroke when adjusting the front and back position of the seat, so the stroke will be too long and the front and back position will be adjusted. Not only is it difficult to do this, but the seat becomes extremely unstable even temporarily during adjustment, which is dangerous.

[Means for solving problems]

The seat slide device of the present invention includes: a lower rail fixed to the floor of the vehicle; an upper rail slidably fitted to the lower rail; and an upper rail provided on the lower rail and arranged in the longitudinal direction of the rail. a lock plate having a plurality of lock engaging portions and a stopper wall located at a position different from the lock engaging portions; an operating shaft rotatably attached to the upper rail along the upper rail;
It is fixed to the operating shaft and rotates together with the operating shaft,
and a lock lever having a lock receiving part that removably fits into the lock engaging part; the lock lever is always biased in a direction (in the locking direction) in which the lock receiving part and the lock engaging part are fitted together. a spring; a pivoting arm rotatably attached to the operating shaft, the pivoting arm pivoting between a first position in which it engages with the stopper wall and a second position in which it does not engage; The lock receiver is always biased toward the first position, and when rotated to the second position, engages a part of the lock lever and moves together with the lock lever in the unlocking direction. A rotating arm for disengaging the part from the lock engaging part; and a force transmitting member for operating the arm connected to the rotating arm.

The force transmission member is, for example, a release wire, one end of which is connected to the rotating arm,
The other end is connected to the seat's reclining mechanism.

[Effect]

The seat slide device with the above configuration rotates the operating shaft and rotates the lock lever.
When the lock receiving part is separated from the lock engaging part,
The upper rail is slidable relative to the lower rail. Therefore, it can be adjusted to any desired forward or backward position. However, at this time, the rotating arm is in the first position where it can engage with the stopper wall of the lock plate, so if the upper rail is moved forward by a certain amount, the rotating arm will hit the stopper wall, and it will not move forward further. is prevented.

On the other hand, when the force transmitting member rotates the rotating arm to the second position where it does not engage with the stopper wall, the lock lever rotates together with the rotating arm in the unlocking direction. That is, at the same time that the lock receiving part is disengaged from the lock engaging part, the rotating arm moves to a position where it does not engage with the stopper wall, so that the upper rail can be moved forward to its full stroke.

〔Example〕

1 and 2 show the sliding device on the right side of the seat. In the figure, the lower rail 1 is
It is fixed to the floor of the vehicle body (not shown). An upper rail 2 is fitted into the lower rail 1 so as to be slidable in the longitudinal direction. A frame 3 of the seat portion is fixed to the upper part of the upper rail 2. A backrest frame is pivotally attached to the rear part of the seat frame 3 (the right end in FIG. 1) in the same way as a normal seat. A well-known reclining mechanism is provided at the pivot point between the seat frame 3 and the backrest frame, so that the backrest can be tilted forward or the angle of backward inclination can be adjusted.

Further, a lock plate 5 is provided on the lower rail 1 side. As shown schematically in FIG.
A plurality of lock engaging parts 6 are formed on the side of the lock plate 5 in the longitudinal direction of the rail, and a stopper wall 8 is provided in front of the lock engaging parts 6. This stopper wall 8
The side edges of the lock plate 5 are bent downward.

An operating shaft 10 is provided along the upper rail 2. This operating shaft 10 is rotatably supported by brackets 11 and 12 attached to the upper rail. The tip of the operating shaft 10 is an operating portion 14 shaped so that the operating shaft 10 can be rotated by hand.

A lock lever 16 is fixed in the middle of the operating shaft 10. This lock lever 16 has a hole-shaped lock receiving part 18 that is removably fitted into the lock engaging part 6. Further, a portion of the lock lever 16 is provided with a projecting portion 19 that projects toward a rotating arm 25, which will be described later.

The lock lever 16 is always urged by the spring 21 in the direction in which the lock receiving portion 18 and the lock engaging portion 6 are fitted together (the locking direction). This spring 21
is a torsion spring wound around the end of the operating shaft 10. One end of the spring 21 is locked in a groove 23 provided in the operating shaft. The other end side of the spring 21 is
It is locked to the upper rail 2 while being torsioned, and always urges the operating shaft 10, that is, the lock lever 16, in the locking direction. Note that a lock mechanism consisting of a lock lever and a lock engaging portion similar to the above is also provided on the left side of the seat. The lock lever of the left lock mechanism is connected to the lock lever 1 of the right lock mechanism via a wire 24 (see FIG. 4).
It is linked to 6.

Further, a rotating arm 25 is rotatably attached to the operating shaft 10. The rotating arm 25 has a shape as shown in FIGS. 4 to 6. That is, the rotating arm 25 has an upper loop portion 26 and a lower loop portion 27, and the operating shaft 10 is rotatably inserted through the upper loop portion 26.

The pivot arm 25 pivots between a first position where it can engage with the stopper wall 8 and a second position where it does not engage with the stopper wall 8. That is,
In the first position, the side surface of the lower loop portion 27 faces the stopper wall 8, as shown in FIG. In the second position, the lower loop part 2
The side surface of 7 does not face the stopper wall 8.

The rotating arm 25 is always urged toward the first position by a torsion spring 30. This torsion spring 30 is wound around the operating shaft 10, and one end of the torsion spring 30 is locked to the rotating arm 25. The other end of the torsion spring 25 is locked to the upper rail 2 in a torsioned state.

The projecting portion 19 of the lock lever 16 is located on the trajectory of the rotating arm 25 from the first position to the second position. Therefore, when the rotating arm 25 is rotated from the first position to the second position, the overhanging portion 19 abuts against the rotating arm 25 during the rotation, so that the rotating arm 2
5 and the lock lever 16 moves in the same direction,
The lock receiving part 18 is removed from the lock engaging part 6.

The rotating arm 25 is driven by a release wire 32, which is an example of a force transmission member. The end 33 of this release wire 32 is connected to the rotating arm 25
By pulling the release wire 32, the rotating arm 25 can be rotated to the above-mentioned second position.

The other end of the release wire 32 is connected to a reclining device (not shown), so that the release wire 32 is pulled when the reclining device is operated and the backrest of the seat is tilted forward.

In the seat slide device having the above configuration, the lock lever 16 is operated by manually operating the operating section 14 and rotating the operating shaft 10 against the repulsive force of the spring 21.
When the lock receiving portion 18 is rotated in the unlocking direction, the lock receiving portion 18 is disengaged from the lock engaging portion 6. In this state, the upper rail 2 is slidable relative to the lower rail 1, so it can be adjusted to a desired longitudinal position. However, at this time, since the rotating arm 25 is in the first position where it can engage with the stopper wall 8, when the upper rail 2 is moved forward by a predetermined amount, the pivot arm 25 is engaged with the stopper wall 8 as shown in FIG. Rotating arm 25
Because it hits, it cannot move forward any further. That is, the upper rail 2 can slide only within the stroke range necessary for position adjustment.

After adjusting the front and rear positions, when the operating section 14 is released, the lock engaging section 6 is moved by the repulsive force of the spring 21.
The lock receiving portion 18 is fitted into the lock receiving portion 18, and the locking state is again established.

On the other hand, when the reclining device is operated to tilt the backrest forward, the release wire 32 is pulled in conjunction with this movement. As a result, the rotating arm 25
rotates to the second position where it does not engage with the stopper wall 8, and hits the overhanging portion 19 in the middle of the rotation.
The lock lever 16 also rotates in the same direction, and the lock receiving portion 18 is disengaged from the lock engaging portion 6.

In this state, the upper rail 2 is slidable relative to the lower rail 1, and the rotating arm 25 has moved to a position where it does not engage with the stopper wall 8, so the upper rail 2 can be moved forward to its full stroke. It can be moved. In other words, the seat moves to the frontmost position with the backrest reclined forward, resulting in a walk-in state.

As can be seen from the above description, the seat slide device configured as described above serves both as a lock mechanism for adjusting the front and rear positions of the seat and as a mechanism for regulating the stroke during walk-in.

[Effect of idea]

According to the present invention, compared to a seat slide device that separately includes a dedicated walk-in mechanism and a lock mechanism, there are fewer parts, less installation space is required, and the number of man-hours required when assembling the seat into the vehicle body is also reduced.

[Brief explanation of drawings]

Fig. 1 is a side view of a seat slide device showing an embodiment of the present invention, Fig. 2 is a plan view of the seat slide device shown in Fig. 1, and Fig. 3 is a side view of the seat slide device shown in Fig. 1. 4 is a sectional view taken along the - line in FIG. 1, FIG. 5 is a side view showing the lock lever and rotating arm in FIG. 1, and FIG. 6 is a perspective view of the lower rail and lock plate. FIG. 2 is a perspective view showing the lock lever and rotating arm in FIG. 1; DESCRIPTION OF SYMBOLS 1...Lower rail, 2...Upper rail, 5...Lock plate, 6...Lock engaging portion, 8...Stopper wall, 10...Operation shaft, 16...Lock lever, 18...Lock receiving portion, 21... Spring, 25
... Rotating arm, 32 ... Release wire (force transmission member).

Claims (1)

[Scope of claim for utility model registration] A lower rail fixed to the floor of a vehicle; an upper rail slidably fitted to the lower rail; and an upper rail provided on the lower rail and arranged in the longitudinal direction of the rail. a lock plate having a plurality of lock engaging portions and a stopper wall at a position different from the lock engaging portions; an operating shaft rotatably attached to the upper rail along the upper rail; a lock lever that is fixed to the operating shaft, rotates together with the operating shaft, and has a lock receiving portion that is removably engaged with the lock engaging portion; and the lock lever is always locked in engagement with the lock receiving portion. a spring biased in a direction to cause the parts to fit together; , and is always biased toward the first position, and when rotated to the second position, engages a part of the lock lever and moves together with the lock lever, thereby causing the lock receiving portion to move in unison with the lock lever. A seat slide device comprising: a rotating arm for removing the lock from the lock engaging portion; and a force transmitting member for operating the arm connected to the rotating arm.