JPS5835544Y2 - Automobile seat slide device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a sliding device for an automobile seat.More specifically, the present invention relates to a sliding device for an automobile seat. A movable rail to which the seat portion of the seat is attached, a locking means for holding the movable rail at a desired position on the fixed portion, and a sliding means for moving the movable rail provided between the fixed portion and the movable torque. The present invention relates to an automobile seat slide device having the following features.

Conventionally, automobile seats have been designed to be able to be moved forward or backward to suit the occupant's preference or physique. For example, as schematically shown in FIG. 1, hook parts 3 and 4 are provided on a fixed part 1 consisting of a fixed rail, etc., and a movable rail 2 provided so as to be movable back and forth along the fixed part 1, respectively. , and both ends of the helper spring 50 are hooked and stretched to the pair of hook parts 3 and 4 so that the movable rail 2 can automatically slide against the fixed part 1 such as a fixed rail. It is composed of

However, as shown in FIG. 2, the helper spring 5 in such a configuration has a predetermined spring constant, and has a relationship in which the tensile force increases in proportion to the tensile length of the helper spring 5. , when locking the seat part of the seat at a desired position, the tensile force must be gradually increased, and when releasing this locking means, the tensile force of the helper spring 5 increases when the operating lever is operated. have shortcomings that come once or once,
Furthermore, since the hook portions 3 and 4 are formed protruding from the rotating portion 1 and the movable rail 2, respectively, and the presence of the helper spring 5 itself, the slide device must be enlarged, and there is a limit to miniaturization. Met.

Purpose of this invention (It is extremely easy to slide the seat part of one seat back and forth, and it is also possible to slide a part of the seal back and forth with a set constant tension, so that there is no impact during the sliding operation.) The purpose of the present invention is to provide a seat slide device for an automobile that is free from the possibility of applying a large tensile force and also does not require the formation of a hook portion protruding from a fixed portion and a movable rail. Probably.

3 and 4 schematically show a slide device for an automobile seat according to the present invention, and this slide device 1
0 has a fixed part 13 consisting of a fixed rail provided at the bottom of the seat 12, and a movable rail 14 supported so as to be able to reciprocate in the front and back direction along this fixed part 13. The seat portion 12a of the seat 12 is attached to the seat portion 12a, and the seat back 12 is attached to the seat portion 12a.
b is provided so that it can be folded forward or in a fixed state, and the movable rail 1 is further provided in the fixed portion 13 and the movable rail 14.
Appropriate locking mechanisms 15 for holding the locking mechanism 4 at a desired position on the fixing part 13 are formed to complement each other, and an operating lever is used to change the locked state and unlocked state of the locking mechanisms 15. 16 is disposed in front of the seat portion 12a.

In this embodiment, the seat back 12b is shown in a state where it can be folded forward behind the seat portion 12a, but the seat back 12b may be fixed to the seat portion 12a.
Furthermore, in conjunction with the forward folding of the seat back 12b, the seat portion 1
It is also possible to provide an interlocking mechanism for sliding 2a.

FIG. 4 shows an example of a sliding means 1γ for moving the movable rail 14, and this sliding means 1γ (1 fixed part 13
A spiral plate 2 whose central portion 20a is rotatably supported by a pivot pin 19 on a bracket 18 connected to the bracket 18, and whose outer end 20b is locked to the side wall 14a of the movable rail 14.
Consists of 0.

Therefore, when the movable rail 14 moves in the direction of arrow A, the center portion 20a of the spiral leaf spring 20 rotates around the pivot pin 19 and is then pulled and locked at the desired position. When the mechanism 15 is locked, the seat portion 12a
can be held at a desired position, and when the locking mechanism 15 is in the unlocked state, it is automatically slid in the direction of arrow B of the movable rail 14 or the spiral plate 20 by the return force D, The seat portion 12a can be moved forward.

FIG. 5 shows the relationship between the tensile force and the tensile length of the spiral plate spring 20. By using the spiral plate spring 20, it is possible to avoid impact when the locking mechanism 15 is unlocked. The movable rail 4 can be slid with a predetermined constant tensile force without the risk of applying a tensile force, and the slide device 10 can be made smaller.

6 to 8 show different sliding means of the sliding device for an automobile seat according to the present invention, and this sliding means 30 is formed between the fixed part 13 and the movable rail 14. It has a configuration in which the spiral plate spring 20 is housed in the space, that is, the center portion 20a of the spiral plate spring 20 is pivoted on a pivot pin 31 attached to both side walls 13a, 13b of the fixed part 13. The outer end 20b of the movable rail 14 is supported by a groove 32 formed in the upper wall 14c of the movable rail 14.
Slide the movable rail 14 in the direction of arrow A from the state shown in Fig. 6, slide the movable rail 14 to the position shown in Fig. 7, and move it again from the state shown in Fig. 7 to the position shown in Fig. 6. This allows the rail 14 to slide.

In this embodiment, the center portion 20a of the spiral plate spring 20
is provided on the fixed part 13 and the outer end 20b is provided on the movable rail 14 side. It is possible to install it even when the roof falls.

According to such a configuration, in addition to the above-mentioned effects, there is no need to provide a storage space for the spiral leaf spring outside the movable rail.
This allows the sliding means to be further downsized.

Next, using a spiral plate (the spiral plate 20 is formed into a tapered shape as shown in FIG. 9), the center portion 2 of the spiral plate
The reason why 0a is made narrow and the outer end 20b is made wide is as follows.
It is also possible to reduce the tensile force as the tensile length of the spiral plate 20 increases (see Fig. 10).

The above is an example of the configuration of a sliding device for an automobile seat according to the present invention. With this configuration, the seat portion of the seat can be slid back and forth extremely easily, and the tensile force at the start of sliding can be reduced. The tension can be set arbitrarily, and the seat part can be slid back and forth with a set constant tension force or with a tension force that changes relatively slowly, without applying an impactful tension force. Moreover, it is possible to obtain an automobile seat slide device in which the size of the slide device can be reduced.

The above description merely shows one embodiment of the present invention, and it will be obvious that various modifications and changes can be made without departing from the spirit of the present invention.

[Brief explanation of the drawing]

Fig. 1 is a perspective view schematically showing a conventional slide device, Fig. 2 is a perspective view showing an outline of a conventional slide device;
The figures are a diagram showing the relationship between the tensile force and the tensile length of the helper spring shown in Fig. 1, Fig. 3 is a schematic perspective view showing the automobile seat slide device according to the present invention, and Fig. 4 is a diagram showing the relationship between the tensile force and the tensile length of the helper spring shown in Fig. 1. A perspective view, FIG. 5 is a diagram showing the relationship between the tensile force and the tensile length of the spiral plate spring, and FIGS. 6 to 8 are perspective views and longitudinal sectional views showing different embodiments of the sliding means. 9 and 10 are plan views showing different embodiments of the spiral leaf spring and diagrams showing the relationship between the tension length and the tension force. In the figure, 10... slide device, 12...
・Seat, 12a... Seat part, 12b...
...Seat back, 13... Fixed part, 14.
...Movable l-le, 15...Lock mechanism,
17.30...Sliding means, 20...Spiral plate spring, 20a...Center, 20b...
...zu; 1 side end.

Claims (2)

[Scope of utility model registration request] (1) A nationally designated part provided in one part of the seat, a movable rail that is supported so as to be reciprocally movable in the front and back direction along the nationally designated part and attached to the seat part of the seat, and a movable rail that connects the movable rail to the desired position of the fixed part. In a sliding device for a seat of an automobile or the like, the sliding device has a locking means for holding the movable rail in a position, and a sliding means for moving the movable rail provided between the fixed part and the movable rail, wherein the sliding means is An automobile seat comprising a spiral plate whose center part is rotatably supported on one side of the fixed part and the tilting of the movable rail, and whose outer end is locked on the other side. Slide device. (2) The automobile according to claim 1, wherein the spiral plate is housed in a space formed between the defining portion and the movable rail. Seat sliding device.