JPS6127792Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a sliding device for a seat in a vehicle such as an automobile.

The driver seat and assistant seat of a car are
A slide device is provided so that it can be adjusted forward and backward relative to the vehicle body, but conventional slide devices are
As shown in FIGS. 1 and 2A, the cross section of the fixed rail 01 fixed to the floor surface of the vehicle body is formed into a U-shape with locking flange pieces 01a on both sides, and one seat
The moving rail 02 fixed to the seat frame 03 of S' has an engaging collar piece 02a that can engage with the locking collar piece 01a, and has an inverted U-shaped cross section.
However, in such a conventional slide device, when an excessive force is applied to the device, such as when a car encounters a rear-end collision, as shown in Figure 2 (b), the slide device for fixing or Moving rail 1a,
2a may be deformed to some extent, and the smoothness of the subsequent sliding movement of the seat S' may be impaired. In order to prevent this from happening, various proposals have been made to make the cross-sectional shape of the fixed and moving rails 01 and 02 more complicated, to increase their rigidity by making them thicker, or to reinforce them with other reinforcing members. However, in all cases, the structure was complicated and processing was difficult, the weight increased, and the number of parts increased, resulting in high costs, and so on, and the result was unsatisfactory.

The present invention was proposed in view of the above-mentioned circumstances, and utilizes the flexibility of molding the synthetic resin seat frame of the seat to integrally hang deformation prevention walls covering both sides of the moving rail on the seat frame. This makes it possible to prevent deformation of the fixed and moving rails, and provides a simple structure and low cost.
Moreover, it is an object of the present invention to provide the above-mentioned device which is easy to process and assemble.

In order to achieve this purpose, the present invention
A fixed rail having a U-shaped cross section and having a pair of locking flange pieces on both sides is fixed to the floor surface of the vehicle body, and can be engaged with the locking flange pieces on both sides of the seat frame of the seat. In a slide device for a vehicle seat, a moving rail having an inverted U-shaped cross section and a pair of engaging flange pieces is fixed, and both rails are slidably fitted to each other, and the seat frame is made of synthetic resin. The bottom of this seat frame consists of
The present invention is characterized in that a pair of deformation prevention walls are integrally provided vertically extending along both sides of the moving rail so as to cover the entire length of the moving rail.

Hereinafter, one embodiment of the present invention will be described with reference to FIGS. 3 and 4. A pair of fixed rails 1 are fixed to the floor plate of a vehicle body in parallel with each other in the front-rear direction.
The fixed rail 1 is formed to have a U-shaped cross section, and locking collar pieces 1a are integrally formed outwardly at the upper ends of both sides thereof.

On the other hand, the seat frame 3 of the seat S, which is mounted so as to be able to slide back and forth on the fixed rails 1, is integrally molded from a hard synthetic resin material. A pair of movable rails 2 that are slidably fitted are fixed in parallel to each other in the front-rear direction,
The cross-sectional shape of this moving rail 2 is formed into an inverted U-shape in cross section, and inward engaging collar pieces 2a are integrally formed on the lower edges of both sides thereof. Then, when the fixed rail 1 and the movable rail 2 are fitted, their collar pieces 1
a, 2a are adapted to be slidably engaged with each other.

A pair of deformation prevention walls 4 are provided on both sides of the seat frame 3 and extend along both outer surfaces of the moving rail 2 so as to cover the entire length of the rails 2.
are provided vertically, and these deformation prevention walls 4 can prevent deformation of both side walls of the moving rail 2.

In addition, numeral 5 in the figure is a conventionally known lever for releasing the fixation of the seat.

If the fixation release lever 5 is now released, the seat S can freely reciprocate on the fixed rail 1 on the floor of the vehicle body together with the movable rail 2, and its longitudinal position can be adjusted.

By the way, even if excessive force is applied between the fixed rail 1 and the movable rail 2 due to a sudden stop of the vehicle or a rear-end collision, the movement of the seat frame 3 along the outside of both side walls of the movable rail 2 Since each pair of deformation prevention walls 4 extends, deformation of the movable rail 2 and the fixed rail 1 is prevented.

As described above, according to the present invention, on the floor of the vehicle body,
A fixed rail 1 having a U-shaped cross section and having a pair of locking collar pieces 1a on both sides is fixed to the seat frame 3 of the seat S, and a pair of locking collar pieces 1a can be engaged with the locking collar pieces 1a on both sides. In the slide device for a vehicle seat, a moving rail 2 having an inverted U-shaped cross section and an engaging flange 2a is fixed, and the rails 1 and 2 are slidably fitted to each other, wherein the seat frame 3 is made of a synthetic resin material, and a pair of deformation prevention walls 4 are provided at the lower part of the seat frame 3, extending along both sides of the moving rail 2 so as to cover the entire length of the moving rail 2. Since they are integrally installed vertically, even if an unreasonable force is applied between the fixed and movable rails 1 and 2, their deformation is prevented by the deformation prevention wall 4, and the movable rail 2 is prevented from moving in the lateral direction relative to the fixed rail 1. It is possible to reciprocate along a predetermined trajectory without changing the relative movement position, and it is possible to adjust the movement of the seat S in a constant, smooth and light manner. Moreover, seat frame 3
By making the seat made of synthetic resin, the weight of the seat can be reduced.

In particular, the deformation prevention wall 4, which is integral with the synthetic resin seat frame 3, can be molded integrally with the seat frame 3 during molding, making it easy to process, and does not need to be specially fixed to each rail 1, 2. Easy to assemble. Moreover, the deformation prevention walls 4 serve as reinforcing ribs that reinforce the lower parts of both sides of the seat frame 3 over the entire length thereof, thereby increasing the rigidity of the synthetic resin seat frame 3. It functions as a cover that covers the entire length of both sides of the fixed rail 1, improves the appearance of the lower portions on both sides of the seat, and prevents the hands and clothes of the seat occupants from getting soiled by grease, etc. on the surface of the fixed rail 1. can be prevented. Further, since the number of parts does not increase even if the deformation prevention wall 4 is specially provided, this is combined with the fact that the deformation prevention wall 4 is used both as a reinforcing rib for the seat frame 3 and a cover for the fixed rail 1 as described above. Therefore, the structure of the device can be significantly simplified, which can greatly contribute to cost reduction.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a vehicle seat equipped with a conventional slide device, Fig. 2 A and B are enlarged sectional views taken along the line of Fig. 1, and Figs. 3 and 4 show one embodiment of the device of the present invention. FIG. 3 is a perspective view of the device of the present invention, and FIG. 4 is an enlarged sectional view taken along the line of FIG. S... Seat, 1... Fixed rail, 1a... Locking collar piece, 2... Moving rail, 2a... Engaging collar piece, 3... Shift frame, 4... Deformation prevention wall.

Claims (1)

[Scope of utility model registration request] A fixed rail 1 having a U-shaped cross section and having a pair of locking flange pieces 1a on both sides is fixed to the floor surface of the vehicle body, and on the other hand, the locking flange pieces 1a are attached to the seat frame 3 of the seat S on both sides. A pair of engagement collar pieces 2a that can be engaged with
In the slide device for a vehicle seat, the moving rail 2 having an inverted U-shaped cross section is fixed, and the rails 1 and 2 are slidably fitted to each other, and the seat frame 3 is made of a synthetic resin material. A pair of deformation prevention walls 4 are integrally provided below the seat frame 3 and extend along both side surfaces of the movable rail 2 so as to cover the entire length of the movable rail 2. A sliding device for vehicle seats.