JPS6322100Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a seat slide mechanism, and more particularly to a seat slide mechanism that controls the slide movement speed of the seat to be below a certain speed.

For example, in a car seat with a walk-in function, a coil spring is installed between the upper rail and lower rail of the seat's sliding mechanism, and the action of this spring moves the seat forward. Conventionally, since the weight of the seat is relatively heavy, it is necessary to increase the tension of the coil spring, which has the drawback that the sliding speed of the seat gradually increases as the seat starts to slide.

The purpose of the present invention is to eliminate the above-mentioned conventional drawbacks by providing a speed reduction unit in the seat, and connecting the sliding movement of the seat to this through a rack and pinion mechanism to reduce the sliding movement speed of the seat below a certain speed. To provide a sliding mechanism for the seat.

The present invention will be explained below with reference to illustrated embodiments.

The seat slide mechanism of the present invention shown in FIG.
The seat has upper rails 2, 2' integrally attached to the lower end of the seat part 1, and these upper rails 2, 2' have mounting holes 3a, 3' for attaching the seat to an immovable part such as a frame or floor. Lower rail 4 fixed on mounting plate 3, 3' with a
4', and by sliding the upper rails 2, 2' with respect to the lower rails 4, 4', the seat can slide in the front and back direction. A fixing plate 5 is attached to the mounting plate 3.
are integrally attached, and the fixing plate 5 is easily attached to the fixing plate 5.
A is formed so that its longitudinal direction is parallel to the sliding direction of the seat, and a pinion 6 meshes with this rack 5a. The rotation support shaft 7 of the pinion 6 is
The reduction unit 8 disposed above is attached to a support plate 9 fixed on the upper rail 2. A slide operating lever 10 projects from the front of the seat 1, and the rear end of the seat 1 extending deep is attached to a lock member 11 connected to a slide lock mechanism (not shown). and,
When the slide operation lever 10 is operated,
The locking member 11 is actuated, thereby actuating the slide lock mechanism to release the slide lock, and the seat begins to slide.

As the seats begin to slide,
Since the pinion 6 moves while meshing on the rack 5a, the pinion 6 rotates, and this rotation is caused by the support shaft 7.
The signal is transmitted to the deceleration unit 8 via. The speed reduction unit 8 is constituted by a well-known device such as a resistance wheel, and when the rotation from the pinion 6 is transmitted, it exerts a deceleration effect on the rotation to reduce the rotation to a constant speed or less. As a result, the sliding speed of the seat is limited by the rotational speed of the pinion and becomes less than a certain speed. That is, when the seat is slid forward by, for example, a coil spring with strong tension, or is pushed strongly by a hand, the sliding speed becomes faster as it moves from the beginning, and the pinion Even if the rotational speed of the pinion 6 tries to increase, the resistance generated by the resistance wheel of the deceleration unit 8 increases in proportion to this rotational speed, so the rotational speed of the pinion 6 cannot increase and remains below a certain speed. Therefore, the rotational speed of the pinion 6 is controlled to be below a certain constant speed, and the sliding movement speed of the seat is also held down, so that the speed does not gradually increase but becomes below a certain speed.

As explained above, according to the present invention, the sliding movement speed of the seat is held down to a certain speed or less by the action of the deceleration unit via the rack and pinion. Due to the action of the coil spring, which is too strong even during operation, the sliding movement speed of the seat does not gradually increase, but is kept below a certain speed, preventing impact to the seat when the sliding movement stops, and furthermore, the structure due to this. This has the effect of not only preventing deterioration of the slide mechanism but also extending the durability of the slide mechanism and its stopping structure.

In addition, in the above embodiment, a coil spring is not provided between the upper rail 2 and the lower rail 4, but by providing this,
It goes without saying that the present invention may be used to reduce the slide movement speed in a walk-in mechanism, or furthermore, as a deceleration mechanism in a general slide operation.

[Brief explanation of drawings]

FIG. 1 is a perspective view of a seat slide mechanism showing an embodiment of the present invention. 1... Seat, 2... Upper rail, 3... Lower rail, 5a... Rack, 6... Pinion,
7... Rotating support shaft, 8... Reduction unit.

Claims (1)

[Scope of claim for utility model registration] A deceleration unit including a resistance wheel disposed on either the seat side that slides in the longitudinal direction or the fixed side that does not slide, and either the seat side or the fixed side that does not slide. and a rack provided on the other side with a longitudinal direction parallel to the sliding direction of the seat, and a pinion that meshes with the rack and is connected to the resistance wheel of the reduction gear unit via a rotating support shaft, When the seat slides, the resistance by the resistance wheel of the deceleration unit is transmitted to the rack via the pinion to control the slide movement speed of the seat to be below a certain speed.