JP2568296Y2 - Slide rail device for vehicle seat - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slide rail device used for adjusting the front / rear position of a vehicle seat such as an automobile.

[0002]

2. Description of the Related Art
A vehicle seat of an automobile or the like is mounted on a slide rail so that the position in the front-rear direction can be adjusted according to the physique of the occupant.

[0003] The seat for adjusting the front / rear position tends to increase the amount of sliding in order to obtain a better sitting posture for passengers of all sizes recently. In order to increase the amount of sliding of the seat, it is necessary to lengthen the slide rail, but if it is lengthened, the rear end of the lower rail of the slide rail fixed to the vehicle body will be exposed when the seat moves forward, As a result, not only was the end edge of the lower rail exposed, which was dangerous, but also the grease applied to the rail made shoes and the like dirty and had a very poor appearance.

The present invention has been made in order to solve the above-mentioned problem. The purpose of the present invention is to ensure a sufficient sliding amount and prevent the rear end of the lower rail from being exposed even when the seat is advanced. An object of the present invention is to provide a slide rail device for a vehicle seat.

[0005]

According to the present invention, a lower rail fixed to a floor panel is provided to achieve the above object.
An upper rail that is linked to a seat and slides in the front-rear direction along the lower rail; a guide portion provided integrally with the upper rail; and a fin that engages with the guide portion at the rear end of the upper rail so as to be relatively movable in the front-rear direction. And a cover that covers the rear end of the lower rail when the upper rail is advanced.

[0006]

According to the present invention, the rear end portion of the lower rail exposed by the advancement of the upper rail accompanying the advancement of the seat is covered with the cover body.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the illustrated embodiments. 1 and 2 show a slide rail device 1 according to a first embodiment of the present invention. The slide rail device 1 is generally constituted by a lower rail 2, an upper rail 3, and a cover body 4.

The lower rail 2 has a section H substantially as shown in FIG.
The front end and the rear end are fixed to the floor panel 5 via a front leg bracket 21 and a rear leg bracket 22, respectively.

The upper rail 3 is made of a long material having a substantially U-shaped cross section which opens downward as shown in FIG.
a is extrapolated to the upper part of the lower rail 2 and is slidably assembled in the front-rear direction of the vehicle by sliders 6 and 7 interposed between the lower rail 2 and the lower rail 2. On the upper surface of the upper rail 3, an engagement piece 31 linked to a seat (not shown)
Are formed upright in the length direction, and the upper surface and the side surfaces thereof have L-shaped guide portions 3 along the length direction, respectively.
b and 3c are formed to protrude. These engagement pieces 31,
The guide portions 3b and 3c are formed at the same time as the upper rail 3 is formed by extruding a light alloy.

The cover body 4 comprises two cover pieces 41,
42 and is fixed to the rear end of the lower rail 2. The cover piece 41 is formed by being bent into a substantially L-shape, while the cover piece 42 is formed by being bent into a shallow U-shape, and both cover pieces 41 and 42 are provided when the seat is fully advanced. the exposed portion L ₁ a that is possible length to cover the lower rail 2 are those having at least be formed. In the present embodiment, the seat is designed to have a length L having a portion that slightly overlaps with the upper rail 3 when the seat is moved forward most (FIG. 1). Fins 41a and 42a engaging with the guide portions 3b and 3c of the upper rail 3 are formed on the cover pieces 41 and 42, respectively, in the longitudinal direction.

The cover pieces 41 and 42 are assembled from the outside of the upper rail 3 such that the inner surfaces face each other. This assembling is performed by engaging the fins 41a and 42a with the guide portions 3b and 3c, respectively, as shown in FIG.
The lower end of the cover rails 41 and 42 is screwed to the outside of the lower end of the lower rail 2 at the lower end thereof.

The cover body 4 is formed by this assembly, and a slit 9 through which the engagement piece 31 of the upper rail 3 can pass is formed at the upper part of the cover body 4 by the gap between the cover pieces 41 and 42. (See FIG. 2).

In the slide rail device 1 thus formed, even if the upper rail 3 is brought to the position shown in FIG. 1 by moving the seat forward most, the rear end L ₁ of the lower rail 2 where the upper rail 3 is no longer present can be maintained. It is covered with the cover body 4 without being exposed. When the seat at the most advanced position shown in FIG. 1 is moved rearward, the upper rail 3 is moved rearward accordingly, but the movement is not obstructed by the slit 9 of the cover body 4 and a sufficient sliding amount is obtained. Can be secured.

Next, a slide rail device 10 according to a second embodiment shown in FIGS. 3 to 6 will be described. The same components as those of the slide rail device 1 described above are denoted by the same reference numerals, and redundant description will be omitted.

In the slide rail device 10, the cover body 50 is not formed of a divided cover piece but is integrally formed, and is engaged with the upper rail 3 so as to be relatively movable in the front-rear direction without being fixed to the lower rail 2. Along with
The slide rail device 1 is different from the slide rail device 1 in that the upper rail 3 is connected to the slide rail device 1 via a coil spring 60, and the other structure has the same structure as the slide rail device 1.

As shown in FIGS. 5 and 6, the cover 50 is formed by cutting out the entire surface 50a and the bottom surface 50b of a rectangular parallelepiped box so that the engagement piece 31 of the upper rail 3 can enter the upper surface 50e. A slit 51 is formed.
The cover body 50 is assembled with the guide rails 3b and 3c formed on the upper and side surfaces of the upper rail 3 by engaging the fins 50a and 50b formed on the inner surface of the cover body with the upper rail 3 so as to be slidable in the front-rear direction. (See FIG. 5). At this time, the upper rail 3 is attached to the lower rail 2 by the interposed sliders 6 and 7 so as to be slidable in the front-rear direction.

The cover body 50 thus assembled is further connected to the upper rail 3 by a coil spring 60. For this connection, the upper rail 3 and the cover body 50 are provided with brackets 70 and 71, respectively, and the coil spring 60 is attached by locking the hook 61 at one end to the bracket 70 and the hook 62 at the other end to the bracket 71. ing.

The slide rail device 10 configured as described above operates as follows. 3 shows the positional relationship of the upper rail 3 when the seat (not shown) is most advanced, the rear end L ₁ of the lower rail 2 which is the upper rail 3 is exposed due to advanced is covered with a cover member 50. At this time, the inner surface of the rear surface portion 50c of the cover body 50 abuts against the rear end surface of the lower rail 2 to prevent further advancement regardless of the tensile force of the coil spring 60.
It has stopped at a position of covering the rear end portion L _1. At this time, the front side portion of the cover body 50 is engaged with the upper rail 3 so as to be movable in the front-rear direction. At this time, the coil spring 60 is in the maximum tension state, and the tensile force acts on the cover body 50 to suppress the rattling of the cover body 50 as much as possible.

FIG. 4 shows the positional relationship of the upper rail 3 when the seat (not shown) has moved rearmost. At this time, the rear end of the upper rail 3 protrudes rearward of the lower rail 2, and the cover body 50 is also pushed rearward by the upper rail 3. When the seat is moved backward from the most advanced state (FIG. 3), the engagement piece 31
1, the upper rail 3 moves backward. In this case the cover member 50 is in a state of still covers the rear end L ₁ of the lower rail 2 as shown in FIG. Then, the rear end surface of the upper rail 3 abuts against the inner surface of the rear surface portion 50c of the cover body 50, and the subsequent rearward movement of the upper rail 3 is performed in a state in which the cover body 50 is engaged. Becomes Therefore, the sliding amount of the upper rail 3 can be sufficiently secured without any hindrance by the cover body 50.

As described above, also in the slide device 10,
The exposed rear end of the lower rail 2 as the seat advances is covered with the cover body 50, thereby preventing the exposed rear end from danger to the occupant, contamination, and the like.

[0021]

As described above, according to the present invention, a sufficient amount of sliding can be ensured, and the rear end of the lower rail is covered with the cover body even when the seat is advanced, so that the exposed state does not occur. In addition, the danger to the occupant and the contamination by the grease applied to the lower rail can be effectively prevented, and the appearance is excellent. The upper rail is
And a cover body engaged with the guide portion.
Fins when moving back and forth.
Is engaged with the guide part and moves, so there is no backlash,
Smooth movement becomes possible.

[Brief description of the drawings]

FIG. 1 is a side view of a slide rail device according to a first embodiment of the present invention in a most advanced state.

FIG. 2 is a rear front view of the slide rail device of FIG. 1;

FIG. 3 is a side view of a slide rail device according to a second embodiment of the present invention in a most advanced state.

FIG. 4 is a side view of the slide rail device of FIG. 3 in a most advanced state.

FIG. 5 is a sectional view taken along line AA of FIG. 3;

FIG. 6 is an exploded perspective view of a main part of a slide rail device according to a second embodiment.

[Explanation of symbols]

 1, 10 slide rail device 2 lower rail 3 upper rail 4, 50 cover body 3b, 3c guide portion 41a, 42a, 50a, 50b fin 60 coil spring

Claims (1)

(57) [Scope of request for utility model registration] 1. A lower rail fixed to a floor panel, an upper rail linked to a seat and slid in the front-rear direction along the lower rail, a fin guide provided integrally with the upper rail, and a rear end of the upper rail Having a fin that engages with the guide portion so as to be relatively movable in the front-rear direction,
A slide rail device for a vehicle seat, comprising: a cover body that covers a rear end of the lower rail when the upper rail is advanced.