JPH092109A - Seat slide device - Google Patents

Abstract

(57) [Abstract] [Purpose] A seat slide device capable of suppressing the deformation of the lower rail without increasing the weight of the device itself and deteriorating the assembly work while avoiding a problem in appearance at the end of the lower rail. To provide. [Structure] A lower rail 1 is attached to a synthetic resin cap main body 40 that is fitted to the rear end of the lower rail 10 having a substantially U-shaped cross section.
Steel plate 50 interposed between the left and right side portions 10B, 10C of 0
Equipped with.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat slide device for a vehicle or the like, and more particularly to a seat slide device provided with a cap at an end portion of a lower rail.

[0002]

2. Description of the Related Art Generally, a vehicle seat slide device is mounted on a floor surface of a vehicle body via a bracket B, as shown in FIG.
The upper rail R2 on which the seat S is mounted is slidably fitted, and by a lock mechanism (not shown),
The upper rail R2 can be locked at a desired slide position. In such a seat slide device, especially when the seat S is set to the forward position, the rear end portion of the lower rail R1 is largely exposed, which is easily noticeable from the rear seat, and its appearance is poor. Therefore, the appearance was not preferable.

Conventionally, as a method for avoiding such a problem in appearance, for example, in Japanese Utility Model Laid-Open No. 4-69220, a method of mounting a cover for hiding the cut end face on the rear end of the lower rail R1 is known. Have been described.

Further, as a conventional seat slide device,
Deformation when a large peeling load is applied between the lower rail R1 having a substantially U-shaped cross section and the upper rail R2, in particular, the left and right side portions R1-1 and R2 of the lower rail R1 having a substantially U-shaped cross section.
-To prevent the deformation that narrows the interval of -2, lower rail R
There is also one with a larger wall thickness or additional reinforcement members. A seat slide device having such a reinforcement member added thereto is disclosed in, for example, Japanese Utility Model Laid-Open No. 63-80 previously proposed by the present applicant.
It is also described in Japanese Laid-Open Patent Publication No. 225.

[0005]

SUMMARY OF THE INVENTION
In the one disclosed in Japanese Patent No. 69220, although a problem in appearance can be avoided by a cover attached to the end portion of the lower rail R1, left and right side portions R1-1, R of the lower rail R1.
In order to suppress the deformation in which the interval of 1-2 is narrowed, it is still necessary to increase the wall thickness of the lower rail R1 or to add a reinforcing member, and accordingly, the weight of the device itself is increased,
Also, there is a problem that the assembly work is deteriorated due to an increase in the number of parts.

An object of the present invention is to provide a seat slide device capable of suppressing deformation of the lower rail without inviting an increase in weight of the device itself and deterioration of assembly work while avoiding a problem in appearance at the end portion of the lower rail. To provide.

[0007]

A seat slide device according to the present invention comprises a lower rail which is installed on a floor and has a substantially U-shaped cross section formed by a bottom portion and left and right side portions, and a seat attached to the lower rail. In a seat slide device including an upper rail that is movably guided,
A resin cap mounted on an end portion of the lower rail, and a reinforcing member held by the cap and interposed between left and right side portions of the lower rail are provided.

[0008]

In the seat slide device of the present invention, the resin cap mounted on the end portion of the lower rail is provided with the reinforcing member interposed between the left and right side portions of the lower rail.
While avoiding appearance problems at the end of the lower rail,
Deformation of the lower rail is suppressed without increasing the weight of the device itself or worsening the assembly work.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 and FIG. 2 are explanatory views of the entire seat slide device of this example. In these figures, 10
Is a lower rail that is mounted on the floor surface in the vehicle through the brackets 1 and 2, and as shown in FIG.
A and the left and right side portions 10B and 10C are formed into a substantially U-shaped cross section. Furthermore, their side portions 10B, 10C
The bent portions 10D and 10E that extend outward are formed on the. A cap 30 described later is attached to the rear end portion (the right end portion in FIG. 1) of the lower rail 10. In FIGS. 1 and 2, reference numeral 20 denotes an upper rail to which a bottom portion of a seat (not shown) is mounted, and left and right side portions 20B and 20C of an intermediate portion 20A thereof are curved in a U-shape, and a cross-section is substantially C-shaped. It is formed into a shape. These rails 10 and 20 are slidable along their longitudinal directions so that the latter side portions 20B and 20C surround the former side portions 10B and 10C and the bent portions 10D and 10E (see FIG. 3). It is fitted. Their mating parts and
A slider, a ball or the like (not shown) is interposed in the facing portion between the bottom portion 10A and the intermediate portion 20A.

On the side portion of the upper rail 20, an operating rod 5 is rotatably supported by brackets 3 and 4 in the directions of arrows A1 and A2 about its axis. A handle 5A is bent and formed at one end of the operation rod 5,
The latch plate 6 is welded to the other end side.
On the side portion 10C of the lower rail 10, a plurality of lock holes 10F capable of fitting with the tip 6A of the latch plate 6 are formed at equal intervals along the longitudinal direction of the lower rail 10. Normally, the operating rod 5 is rotated in the direction of arrow A1 by the spring 7, the tip 6A of the latch plate 6 is fitted into the lock hole 10F facing it, and the rails 10 and 20 cannot move relative to each other. Locking the seat as possible. When adjusting the position of the seat, the handle 5A may be operated to rotate the operating rod 5 in the direction of the arrow A2 to temporarily disengage the tip 6A of the latch plate 6 from the lock hole 10F. Therefore, the latch plate 6 and the lock hole 10F constitute a locking means capable of locking and unlocking the rails 10 and 20.

The cap 30 comprises a synthetic resin cap body 40 and a steel plate 50 as a reinforcing member. The cap body 40 of this example is injection-molded, and is fitted into the rear end of the lower rail 10 in the direction of arrow B in FIG. In addition, the cap 30 itself has a shape that does not hinder the sliding of the upper rail 20 as described later.

In the cap body 40, 41 is a lower end surface cover portion, which is the bottom portion 10 of the lower rail 10.
It is formed in a substantially rectangular shape in plan view so as to cover the end surface of A, the end surfaces of the substantially lower halves of the side portions 10B and 10C, and the opening portion on the rear end portion side of the lower rail 10 surrounded by these end surfaces. Left and right slits 41A and 41B are formed in the lower end surface cover portion 41. Also, 42, 43
Are left and right upper end surface cover portions, which are substantially upper half end surfaces of the side portions 10B and 10C of the lower rail 10, and the bent portion 1
It is formed in a plane substantially L-shape so as to cover the end faces of 0D and 10E. Molding holes 42A and 43A are formed in these upper end surface cover portions 42 and 43.

On the rear surface of the lower end surface cover portion 41, a lower side surface portion 44 which is in contact with the inner surface of the bottom portion 10A of the lower rail 10 is formed in a protruding manner.
Left and right slits 44A, 44B continuous to 1A, 41B
The left and right protrusions 44C and 44D are formed along the vertical direction in FIG. Further, the lower rail 1 is provided on the back surfaces of the lower end surface cover portion 41 and the upper end surface cover portions 42, 43.
The left and right side surface portions 45 and 46 that are in contact with the inner surfaces of the side portions 10B and 10C of 0 are formed by protrusion, and the upper and lower wall portions 47A and 47B that extend in the horizontal direction are formed between them. A steel plate 50 having a substantially square plane is inserted and housed between the wall portions 47A and 47B in the direction of arrow C in FIG. Further, the side surface portions 45, 46 have projections 45
A and 46A are formed along the vertical direction in FIG.

Further, on the back surfaces of the upper end surface cover portions 42 and 43, the upper surfaces thereof so as to be fitted with the bent portions 10D and 10E,
Left and right upper side surface portions 48 and 49 having a substantially U-shaped cross section that are in contact with the side surface and the lower surface are formed to project.

Further, the wall thickness W of the end surface of the lower side surface portion 44 and the left and right upper side surface portions 48, 49 is set small by the tapered surfaces formed on the outer edge portions thereof as shown in FIGS. Has been done.

As described above, the cap 30 constituted by the cap body 40 and the steel plate 50 housed therein is fitted in the rear end portion of the lower rail 10 in the direction of arrow B. At that time, the protrusions 44C, 44D and 45
A and 46A are the bottom portion 10A and the side portion 1 of the lower rail 10.
The cap body 40 itself is firmly fitted to and fixed to the rear end of the lower rail 10 with elastic deformation allowed by the slits 41A, 41B and 44A, 44B. Become. When the upper rail 20 moves forward (to the left in FIG. 1) and the rear end portion of the lower rail 10 is largely exposed, the cap 30 thus mounted improves the appearance of the rear end portion. Therefore, the appearance problem will be avoided.

Further, since the steel plate 50 of the cap 30 attached to the rear end of the lower rail 10 is interposed between the left and right side portions 10B and 10C of the lower rail 10, the steel plate 50 is connected to the lower rail 10 and the upper rail. When a large peeling load is applied to the lower rail 20, deformation in the direction in which the distance between the left and right side portions 10B and 10C of the lower rail 10 is narrowed is suppressed. Therefore, the wall thickness of the lower rail 10 can be reduced accordingly, and the weight can be reduced. Further, the steel plate 50 is provided on the left and right side portions 10B, 10
The minimum size required to suppress C deformation,
Therefore, the weight of the cap 30 itself can be prevented from increasing. Furthermore, by treating the steel plate 50 as a single piece of the cap 30 integrated with the cap body 40, the workability of assembling the device itself can be improved.

Further, in the case of this example, since the wall thickness W of the end surface of the lower side surface portion 44 of the cap body 40 and the left and right upper side surface portions 48, 49 is set to be small, there is no catch in those portions. As a result, the cap 30 is prevented from coming off. Further, in this example, as shown in FIGS. 1 and 2, the cap 30 does not hinder the sliding of the upper rail 20 at all, so that the sliding amount of the upper rail 20 can be set sufficiently.

(Other Embodiments) The steel plate 50 is the lower rail 1
Any shape may be used as long as it is interposed between the left and right side portions 10A and 10B of 0, and its shape is not limited to a quadrangle and is arbitrary. Further, as the reinforcing member, various materials other than the steel plate 50 may be used, and the reinforcing member may be molded to be incorporated in the cap member 40. Cap 3
As means for attaching 0 to the end portion of the lower rail 10, other than fitting, for example, means such as partial crimping of the end portion of the lower rail 10, rivet, or adhesion may be used.

Further, the cap body 40 and the lower rail 10
The reinforcing member may be held so as to be sandwiched between the inner surface and the inner surface. In this case, for example, as the reinforcing member, a member having a substantially U-shaped cross section that extends in the width direction of the lower rail 10 (the direction in which the left and right side portions 10B and 10C face each other) is used, and one lower portion thereof is used as the lower rail. It is possible to adopt a configuration in which it is sandwiched and held between the inner surface of the bottom portion 10A of 10 and the lower side surface portion 44 of the cap body 40. When a reinforcing member having a substantially U-shaped cross section is used as described above, the middle piece and the upper piece of the reinforcing member are mainly the left and right side portions 10B of the lower rail 10,
The deformation of 10C will be suppressed. In short, lower rail 1
In order to interpose a reinforcing member between the left and right side portions 10B, 10C of 0, it is only necessary to be able to hold it inside the lower rail 10, and the shape of the reinforcing member can be appropriately changed according to the holding form and the like.

[0022]

As described above, in the seat slide device of the present invention, the resin cap mounted on the end of the lower rail is provided with the reinforcing member interposed between the left and right side portions of the lower rail. Therefore, it is possible to suppress the deformation of the lower rail without increasing the weight of the apparatus itself and deteriorating the assembly work while avoiding the problem of the appearance at the end portion of the lower rail.

[Brief description of drawings]

FIG. 1 is an overall perspective view of an embodiment of the present invention.

FIG. 2 is a view taken in the direction of the arrow II in FIG.

FIG. 3 is an exploded perspective view of a main part of the embodiment of the present invention.

FIG. 4 is an exploded perspective view of the cap shown in FIG. 3 viewed from the back surface direction.

FIG. 5 is a view taken in the direction of the arrow V in FIG. 4;

6 is a view on arrow VI of FIG. 3. FIG.

FIG. 7 is a view taken in the direction of arrow VII in FIG. 5;

8 is a partial cross-sectional view taken along the line VIII-VIII of FIG.

FIG. 9 is a perspective view for explaining a usage state of a conventional seat slide device.

[Explanation of symbols]

 10 Lower rail 20 Upper rail 30 Cap 40 Cap body 50 Steel plate (reinforcing member)

Claims (3)

[Claims] 1. A lower rail, which is installed on a floor surface and has a bottom and left and right side portions which are configured to have a substantially U-shaped cross section, and an upper rail to which a seat is attached and which is movably guided by the lower rail. A seat slide device, comprising: a resin cap mounted on an end portion of the lower rail; and a reinforcing member held by the cap and interposed between left and right side portions of the lower rail. Slide device. 2. The seat slide device according to claim 1, wherein the cap has the reinforcing member built therein. 3. The seat slide device according to claim 1, wherein the cap is fitted and attached to an end portion of the lower rail.