JPH1016611A - Slide rail of seat for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the peeling off of an upper rail from a lower rail by a simple structure by providing a fixed roller which receives peeling off load of a seat belt in a rear part of the upper rail and is joined on an inner face in an upper part of the lower rail integrally. SOLUTION: Bolts 6, 6 are provided and protrude in mounting parts 10, 11 on a rear side and a front side of an upper rail 1, and the upper rail 1 is tightened to a seat or a leg by using bolts 6, 6. Moreover, a front roller 5 and a rear roller 3 which roll on an inner bottom face of a lower rail 2 are attached to a front part 13 and a rear part 12 which are vertical and in which the upper rail 1 is fitted and inserted into the lower rail 2, and a fixed roller 4 is provided in parallel on a front side of the rear roller 3. The fixed roller 4 is formed in such a manner that it has a small diameter for the rear roller 3. Upward peeling off load which is generated at the time of collision and is input from the bolt 6 into the upper rail 1 is dispersed due to the joining of the fixed roller 4 and the rear roller 3 on an inner face in an upper part of the lower rail 2. Moreover, it is possible to prevent the deformation of the upper part of the lower rail 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slide rail for adjusting the longitudinal position of a vehicle seat with a seat belt.

[0002]

2. Description of the Related Art Conventionally, a slide rail used for a vehicle seat with a seat belt has a thicker upper rail and lower rail so as to cope with a peeling load applied to a seat belt at the time of a vehicle collision or the like. And reinforced. In particular, a slide rail provided on a second seat with a seat belt of a one-box vehicle uses an elongated lower rail with a slit having a substantially square closed cross section and a central upper rail inserted therein, and the lower rail is provided on the vehicle floor. By being buried in the concave groove, the appearance of the interior of the vehicle is improved, and deformation of the lower rail in the width direction is prevented, so that peeling of the upper rail due to deformation of the lower rail is prevented. On the other hand, the upper rail is deformed by providing a plate-like engaging member that engages with the lower rail by the peeling load on the upper rail side, or by welding a reinforcing member to improve the rigidity of the upper rail itself. .

[0003]

Therefore, in the conventional slide rail in which the lower rail is embedded in the vehicle floor, since the upper rail is reinforced by a reinforcing member or the like, the weight increases, and the slidability with respect to the elongated lower rail is impaired. There was a problem. Accordingly, an object of the present invention is to reduce the weight of an upper rail in a vehicle seat with a seat belt, which is not deformed by a peeling load applied to the upper rail and is not peeled off from a lower rail.

[0004]

According to the present invention, there is provided a slide rail for a vehicle seat according to the present invention, wherein a seat-side upper rail is slidably fitted to a lower rail fixed to a vehicle. The lower rail has a substantially square closed cross section and has a slit for inserting the upper rail in the center, and a roller that rolls in the lower rail at the front and rear portions of the upper rail, and a peeling load from the seat belt is applied to the upper rail. In the slide rail of the vehicle seat added to the rear side of the vehicle, fixed rollers are integrally provided at the rear of the upper rail so as to be joined to the upper inner surface of the lower rail by a peeling load of the seat belt.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a slide rail used for a vehicle seat (a second seat of a one-box vehicle) according to the present invention. 7 shows an upper rail fastened by front and rear bolts (6) (6) via a not-shown).

In the figure, reference numeral (2) denotes a long lower rail having a substantially rectangular closed cross section, and a slit into which a lower portion of the upper rail (1) is inserted is opened in a central longitudinal direction in a width direction at an upper portion thereof. It is buried in a groove provided on the vehicle floor. Therefore, since the left and right side walls of the lower rail (2) are supported by the inner surface of the concave groove, deformation in the left and right direction is prevented.

The upper rail (1) is bent in an L-shape, and a bolt (6) is provided on a horizontal mounting portion (10) provided on a rear portion thereof, and a horizontal mounting portion (10) provided on a front portion side. ) Are provided with bolts (6) projecting upward, and each of the bolts (6)
By (6), the upper rail (1) is fastened to the seat or the leg integral with the seat. And the mounting part (1
The seat belt anchor is attached to the seat or leg located above 0).

The lower rail (2) of the upper rail (1)
A front roller (5) and a rear roller (3) that roll on the inner bottom surface of the lower rail (2) are axially mounted on a vertical front portion (13) and a rear portion (12) that are inserted into the inside. A fixed roller (4) is provided in front of the roller (3).

The fixed roller (4) does not roll and is welded to the upper rail (1) side, and its outer diameter is formed to be smaller than that of the rear roller (3), and the inner bottom surface of the lower rail (2) is formed. It is installed so that it does not come in contact with

In FIG. 1, reference numeral (7) denotes an engaging member which engages with the lower rail (2) by a peeling load applied to the upper rail (1) which is integrally welded to the upper rail (1); Is a lock piece, and this lock piece (14)
Engages with a lock hole provided at the bottom of the lower rail (2), whereby the upper rail (1) is moved to the lower rail (2).
Locked to.

FIGS. 2 to 4 show a main part of the present invention. A fixed roller (4) provided on the rear side of the upper rail (1) is mounted directly below the bolt (6). Reference numeral 4) denotes a hollow roller, which is integrally welded to both ends of a shaft (40), and the shaft (40) is inserted into a rear portion (12) of the upper rail (1) and integrally welded to the shaft.

The shaft (40) is bent by the peeling load of the upper rail (1) against the lower rail (2) at the time of a vehicle collision, and the fixed rollers (4) and (4) at both ends of the shaft (40) are moved by the lower rail. The upper part (22) of (2) is configured to be joined to the inner surface of (22).

The rear rollers (3) and (3) have a shaft (3).
This is a well-known device that is rotatably mounted on the lower rail (0), and improves the slidability of the upper rail (1) with respect to the lower rail (2).

As shown in FIG. 3, the lower rail (2) has a conventionally well-known structure.
1) (21) is the side wall, (22) and (22) are the upper part, (2)
3) and (23) indicate bent portions extending to the upper portions (22) and (22), respectively, and the outer surfaces of the upper portions (22) and (22) are fixed to the lower rail (2) substantially in the same plane as the vehicle floor surface. Covered by cover (8).

As described above, the bolt (6) for attaching the upper rail (1) to the seat side is provided directly above the fixed roller (4) in the upper rail (1).
An upward peeling load input to the upper rail (1) from the bolt (6) generated at the time of a vehicle collision or the like is transmitted to the fixed roller (4). Therefore, the fixed roller (4) and the rear roller (3) are joined to the upper inner surface of the lower rail (2), so that the peeling load can be dispersed to the lower rail (2) side.

The left and right fixed rollers (4) (4)
Are joined to the lower rail (2) side with a substantially equal force due to the bending of the shaft (40), so that deformation of the upper portions (22) and (22) of the lower rail (2) is prevented, and the fixed roller (4) (4) is formed by rollers, and the fixed roller (4) is joined to the upper inner surface of the lower rail (2) regardless of the direction of the load applied to each fixed roller (4).
The bondability to the lower rail (2) is improved. Therefore, the upper rail (1) does not separate from the lower rail (2).

FIG. 5 shows a triangular shape of the fixing roller (4) and the rear roller (3) with respect to the bolt (6), that is, the bolt (6) is connected between the fixing roller (4) and the rear roller (3). With such a configuration, the peeling load input to the bolt (6) is applied to the fixed roller (4) and the rear roller (3) substantially uniformly, and the two rollers (4 )
In (3), a peeling load is borne, and peeling of the upper rail (1) from the lower rail (2) can be prevented.

[0018]

According to the present invention, the separation of the upper rail from the lower rail can be prevented only by providing the fixing roller on the rear roller side of the conventional upper rail. Therefore, the structure of the slide rail is simpler than that of the conventional product, and the weight can be reduced.

Moreover, since the fixed roller has a round cross-section, it is bonded to the upper inner surface of the lower rail accurately without stress concentration in any part and regardless of the direction of the load, and the peeling load is distributed to the lower rail side. Can be done.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view of a slide rail of the present invention.

FIG. 2 is a side view showing a main part of the present invention.

FIG. 3 is a sectional view taken along the line III-III of FIG. 2;

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 2;

FIG. 5 is a partially cutaway side view of another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Upper rail 2 Lower rail 3 Rear roller 4 Fixed roller

Claims (5)

[Claims] 1. A seat-side upper rail is slidably fitted to a lower rail fixed to a vehicle side, wherein the lower rail has a substantially square closed cross-sectional shape, and has a slit at the center for inserting the upper rail. A roller that rolls in the lower rail is provided at the front and rear of the rail, and the peeling load from the seat belt is applied to the rear side of the upper rail on the slide rail of the vehicle seat. A slide rail for a vehicle seat, wherein a fixed roller joined to an upper inner surface of the lower rail is integrally provided. 2. The slide rail for a vehicle seat according to claim 1, wherein the fixed roller is provided at a position close to a rear roller of the upper rail. 3. A slide rail for a vehicle seat according to claim 1, wherein a bolt for fastening an upper rail to a seat side is disposed above the fixed roller and the rear roller. 4. The slide rail for a vehicle seat according to claim 1, wherein the fixed roller has a smaller diameter than a rear roller. 5. The slide rail for a vehicle seat according to claim 1, wherein the fixed roller is welded to both ends of a shaft inserted and fixed to the upper rail, and the shaft is flexible by a peeling load from the seat belt.