JPH0534431Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to an automobile seat slide device.
In particular, the present invention relates to a structure of a seat slide device that prevents separation of the upper rails even if a large force is applied to the upper rails that slide on the lower rails.

[Conventional technology] Most of the seat slide devices for automobiles are
It has a structure in which an upper rail provided on the seat bottom plate is slidably supported by a lower rail provided on the automobile floor, and in this case, both rails are movable in the longitudinal direction at both side edges of each other, but movement in the vertical direction is restricted. They are engaged in such a way that the

Incidentally, it is preferable that the seat belt of a seat having such a sliding device be provided on the seat itself in order to avoid the trouble of readjusting due to seat movement. Acts on Atsupararu.

Therefore, various structures have been proposed to prevent the upper rail from separating from the lower rail due to the action of heavy loads (for example, the
No. 26187, No. 141134, No. 141134, No. 57-
144739 and Utility Model Application Publication No. 60-58539).

[Problems to be solved by the invention] However, even with each structure of the above proposals,
If the seat belt load is particularly large, it may not be possible to completely prevent the seat belt from coming off the rail. Also,
Such a seat slide device is provided with a lock lever that fixes the upper rail at a predetermined position, but the bracket supporting the lock lever deforms under the seat belt load, resulting in the problem that the lock comes off.

The present invention solves this problem, and aims to provide an automobile seat slide device that does not cause the rail to come off even when an excessive seat belt load is applied, and can effectively prevent the seat from becoming unlocked. purpose.

[Means for Solving the Problems] The configuration of the present invention will be explained with reference to FIG. 1. A lower rail 1 provided on the automobile floor and an upper rail 2 provided on the seat bottom plate are movable in the longitudinal direction on both side edges and can be moved vertically. The seat slide device that engages with the upper rail 2 in such a manner as to restrict its movement in the direction and slidably supports the upper rail 2 on the lower rail 1 includes a vertical wall 31 on the automobile lower rail 1 that covers both the rail engaging portions from the outside on both sides. A reinforcing plate 3 having a U-shaped cross section is provided, and the upper opening end 32 of the reinforcing plate 3 is bent inward so as to wrap around both the lower and upper rails 1 and 2, while the upper opening end 32 is bent inward so as to wrap the upper rail 2. A regulating plate 4 having a U-shaped cross section is provided, and the reinforcing plate 3 is covered by the regulating plate 4 from the upper opening side.

More preferably, as shown in FIG. 2, a bracket 5 supporting the lock lever 6 is provided,
One end 51 of the bracket 5 is connected to the upper rail 2.
Lever locks are fixed to the upper surface and the other end 52 is fixed to the side surface of the regulation plate 4, and the lock levers 6 are locked to the reinforcing plate 3 at a plurality of positions in the longitudinal direction to position and fix the top rail 2. A stop portion 33 is provided.

[Function] A pulling force acts on the upper rail 2 due to the seat belt load. The upper rail 2 deformed by this pulling force moves to the bent part 32 of the reinforcing plate 3.
When a larger pulling force is applied, the reinforcing plate 3 also deforms as shown in FIG. 1, but this deformation is restricted by coming into contact with the regulating plate 4.

The seat belt load also acts on the lock lever 6, and the bracket 5 receives a deforming force via the lock lever 6. Here, the above bracket 5
Since it is fixed to both the upper rail 2 and the regulation plate 4, deformation is effectively prevented and no unlocking occurs.

[Example] Fig. 5 and Fig. 6 respectively show an overall side view and an overall plan view of the seat slide device, and Figs. 1 to 4 respectively show - lines, - lines, and - lines in Fig. 5. , a sectional view taken along the - line.

The lower rail has a substantially U-shaped cross section, and is attached to the base plate B on the automobile floor by bolts 34 (Fig. 5) protruding from two locations on the lower surface in the longitudinal direction.
(Fig. 1). Above lower rail 1
An upper rail 2 having a substantially inverted U-shaped cross section is supported so as to cover this, and these rails 1 and 2 are moved in the vertical direction by interposing a ball 71 between the opening edges bent inward and outward, respectively. are engaged with each other in a regulated manner.

The upper rail 2 is movable in the longitudinal direction on the lower rail 1 by the balls 71 and rollers 72 arranged at two locations, front and rear.

A thick-walled reinforcing plate 3 with a substantially U-shaped cross section is provided along the lower rail 1, and is attached to caulking pins 81 (FIGS. 2 and 3) at two longitudinal locations in the center of the bottom surface.
4 and 5) to the lower rail 1. Standing walls 3 on the left and right of the reinforcement plate 3 above
1 (Fig. 1) extends upward along the vertical wall of the upper rail 2 so as to cover it from the outside, and each upper end is bent inward at the rear end of the plate.
It is as follows.

A regulating plate 4 having a substantially inverted U-shaped cross section is provided above the upper rail 2, with the center of its top surface aligned with the regulating plate 4, which is inserted into a common bolt 21, and is positioned by its stepped surface on its outer periphery. The regulating plate 4 is positioned so that its top surface covers the opening of the reinforcing plate 3, and the left and right standing walls 41 fall down from near the outside of the reinforcing plate bent portion 32 and extend along the standing wall 31 of the reinforcing plate 3. It's on. This regulation plate 4 has pins 82 (FIGS. 2, 3,
(Figs. 5 and 6) are passed through the plate surface and fixed by welding thereto.

On the top surface of the regulation plate 4 is a seat bottom plate P.
(Fig. 1) is mounted and fixed.

A long plate-shaped bracket 5 is provided (Fig. 6),
The inner end 51 of the bracket 5 is connected to the regulation plate 4.
The upper rail 2 passes through the vertical wall 41 of the reinforcing plate 3 and the vertical wall 31 of the reinforcing plate 3,
(FIG. 2), and its outer rear end 52, which is one step lower, is fixed to the outer surface of the vertical wall 41 of the regulation plate 4. The edges of the vertical wall 41 of the regulating plate 4 and the vertical wall 31 of the reinforcing plate 3 are cut out in front of the portion where the bracket 5 passes through, thereby preventing the upper rail 2 with the bracket 5 fixed from moving forward with respect to the lower rail 1. is made possible.

The front half of the bracket 5 in the longitudinal direction is a support shaft 63.
A lock lever 6 is integrally formed on the support shaft 63 (FIG. 4). The lock lever 6 has a pair of rectangular claws 61 at front and rear positions, and is biased to rotate counterclockwise in FIG. 3 by a coil spring 64 disposed around the support shaft 63. An operating wire W for unlocking is connected to the lever portion 62 of the lock lever 6.

The reinforcing plate 3 is provided with locking holes 33, which are a pair of front and rear lever locking portions, at two locations in the longitudinal direction, and the claw portions 61 of the lock lever 6 engage with the locking holes 33 (first and second positions). 5), position the upper rail 2 in two positions, front and rear.

Note that the seat belt load is applied to the Atsupa rail 2 via the rear bolt 21 installed upright on the Atsupa rail 2.
It acts on

In the seat slide device having the above structure, when a large seatbelt load is applied, a pulling force acts on the rear end of the upper rail 2, and the opening edges of both the lower and upper rails 1 and 2 that engage are deformed, causing the upper rail to deform. 2 deforms and moves upward. This movement is regulated by the upper rail 2 coming into contact with the reinforcing plate 3.

When a larger seat belt load is applied, the reinforcing plate 3 that the upper rail 2 abuts also deforms, but this deformation is effectively regulated by the regulating plate 4, as shown by the chain line in FIG. Ru.

In this way, even if an excessive seatbelt load is applied, the upper and lower rails will not come off.

The above-mentioned seat belt load also acts on the bracket 5 via the lock lever 6 due to its forward horizontal component, but the bracket 5 has its inner end fixed to the upper rail 2 and its outer rear end fixed to the regulation plate 4. Because of this, the deformation is kept small and the engagement between the lock lever 6 and the locking hole 33 does not come off.

[Effect of the invention] According to the invention described in claim 1, a reinforcing plate with a U-shaped cross section is provided so as to wrap both the lower and top rails, and an inverted U-shaped cross-section is restricted so as to cover the reinforcing plate from the opening side. By providing the plate, even if an excessive seatbelt load is applied, the two rails will not separate.

According to the invention as claimed in claim 2, since both ends of the bracket are fixed to both the upper rail and the regulation plate, the bracket will not be deformed even when the seat belt load is applied, and the lock will not come off. .

Furthermore, since the lever locking portion is provided on the reinforcing plate, there is no need to prepare a separate member for locking.

[Brief explanation of the drawing]

Figures 1 to 4 are cross-sectional views of the seat slide device, and the - line and - line in Figure 5, respectively.
5 and 6 are an overall side view and an overall plan view of the seat slide device, respectively. 1...Lower rail, 2...Atsupa rail, 3...
... Reinforcement plate, 31 ... Standing wall, 32 ... Bent part, 33 ... Locking hole (lever locking part), 4 ... Regulation plate, 5 ... Bracket, 51 ... Inner end (one end), 52 ... ... Outer rear end, 6... Lock lever, 61... Claw portion, 62... Lever portion, B... Base plate (automobile floor), P... Seat bottom plate.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A lower rail provided on an automobile floor and an upper rail provided on a seat bottom plate are engaged with each other at both side edges so as to be movable in the longitudinal direction but restricted in the vertical direction. , in the seat slide device that slidably supports the upper rail by a lower rail, the lower rail is provided with a reinforcing plate having a U-shaped cross section and having a standing wall that covers both rail engaging portions from the outside on both sides;
The upper opening end of the reinforcing plate is bent inward so as to wrap around both the lower and upper rails, while a regulating plate with an inverted U-shaped cross section is provided on the upper rail, and the regulating plate allows the reinforcing plate to open upwardly. An automobile seat slide device characterized by being covered from the side. (2) A bracket supporting the lock lever is provided, one end of the bracket is fixed to the upper surface of the upper rail, and the other end is fixed to the side surface of the regulation plate, while the reinforcing plate is provided with 2. The automobile seat slide device according to claim 1, further comprising a lever locking portion for positioning and fixing the upper rail by locking the lock lever.