JPS5853610B2 - Automotive seat adjuster - Google Patents

Description

[Detailed description of the invention] The present invention relates to a seat adjuster for an automobile.

Automobile seat adjusters (in this case, a lower rail fixed to the vehicle body side and an upper rail fixed to the seat side are slidably combined with each other,
It is required to increase the peel strength at the part where the two are combined.

Furthermore, it is required that both slide smoothly, and that the locking strength of the locking mechanism that engages and fixes both at a desired position after adjustment is required to be strong.

Among the above requirements, in order to increase the peel strength, conventional structures have been designed to have sufficient strength by devising the cross-sectional shapes of the lower rail and upper rail, but in order to increase the locking strength, , which was previously solved by using separate parts.

An object of the present invention is to improve these points and provide an automobile seat adjuster that has extremely strong locking strength and can slide smoothly without using separate parts.

An embodiment of the present invention will be described below with reference to FIGS. 1 to 7.

In this automobile seat adjuster, an upper rail 1 fixed to the seat side and a lower rail 2 fixed to the floor side of the vehicle body are assembled so as to be slidable in the longitudinal direction.

The upper rail 1 includes a flat upper surface part 1a, side parts 1c, 1c hanging down from both sides of the upper surface part 1a through curved shoulder parts 1b, 11, and the side parts 1c.

U-shaped flange part 1 bent inward from 1c
d and 1d, and the lower rail 2 includes a flat bottom part 2a and side parts 2c and 2 rising from both sides thereof.
c, and inverted U-shaped flange parts 2d, 2a which are bent outward from the side parts 2c, 2c. Assembled so as to be movably engaged with each other.

A locking hole 3 having a substantially rectangular shape is provided in one shoulder portion 1b of the shaft in the longitudinal direction of the upper rail 1, and two locking notches 31 are provided at corresponding positions on the flange portion 1d.
31 will be provided.

Flange portion 2 of lower rail 2 corresponding to the hole 3 directly below
The upper rail 1 is provided with a plurality of locking square holes 4°4.4... at a constant pitch along the longitudinal direction.
the hole 3 of the lower rail 2, the desired two of the square holes 4, 4... of the upper rail 1, and the locking notch 3L3 of the upper rail 1.
1 and the locking pieces 51 and 51 of the locking member 5 are configured so that both rails 1 and 2 are locked at a desired position.

The locking member 5 is fixed to the lever 7 at a support portion 52 that supports two locking pieces 51, 51.

The lever T is rotatably supported by a lever holding part 62 bent downward along the shape of the upper rail 1 from a flat main body 61 of the lever bracket 6 fixed to the upper surface part 1a of the upper rail 1. The locking member 5 is configured to be rotatable in conjunction with the lever 7 at the notch 63 of the locking member 5 .

The lower part of the support part 52 of the locking member 5 is cut out diagonally to form a locking surface 53.

In order to smooth the sliding movement of both rails 1 and 2, rollers 8 are disposed between the upper surface portion 1a of the upper rail 1 and the lower surface portion 1b of the lower rail.

Furthermore, it has a square hole 91 in the center for receiving the roller 8, and is provided with a flange portion 92.92v extending downward along the shape of the upper rail 1 (this is a U-shaped flange portion 1d of the upper rail 1). A bent portion 93.
A retainer 9 having a diameter of 93 is disposed between both rules 1 and 2,
In addition, the ball 10 is held in a ball holding part 94 cut out in the bent part 93 of the retainer 9, and the ball 10 is
is interposed and held between the flange portion 1d of the upper rail and the lower end of the inverted U-shaped flange portion 2d of the lower rail.

Further, the slider 11 is engaged with the flange portion 92 of the retainer 9 (a hole 95 provided therein), so that the slider 11 can slide between the flange portions 1d, 1d, 2d, and 2d of both rails 1.2.

Since the seat adjuster of the present invention has the above-described configuration, when the seat adjuster is unlocked (when the locking member 5 is disengaged as shown by the imaginary line in FIG. 1), both rails 1
, 2 slide smoothly due to the action of rollers 8 and balls 10.

In addition, when the lever γ is operated at the desired position, the locking pieces 51, 51 of the locking member 5 engage the hole 3 of the upper rail 1, the two square holes 4, 4 of the lower rail 2, and the notch of the upper rail 1. 31.31 (this engages).

This engagement can be easily disengaged using the lever 7, and in this case, in order to prevent unnecessary movement of the locking member 5, the locking surface 53 of the support portion 52 comes into contact with the upper rail 1 and plays the role of a stopper.

FIG. 8 shows a partial modification of the above embodiment.

That is, in the above example, the locking surface 53 of the support part 52 is arranged so as to come into contact with the upper rail 1 and function as a stopper, but as shown in FIG. The tip 51a of the stopper 51 is connected to the upper rail 1.
It can also be made to come into contact with and serve as a stopper.

As is clear from the above-mentioned Example G, the seat adjuster of the present invention has a flat plate-like upper surface portion 1a from both sides of the shoulder portion 1a.
b, an upper rail consisting of side parts 1c, 1c hanging down through 1b, and U-shaped flange parts 1d, 1d bent inward from the side parts 1c, 1c, and both sides of a flat bottom part 2a. A lower rail is made up of side parts 2c, 2c rising from the side surface and inverted U-shaped flange parts 2d, 2d bent outward from the side part, and both flange parts 1a, 1a, 2d, 2a are engaged with each other. The upper rail is assembled in a slidable manner, and a locking hole 3 is provided in one shoulder of the upper rail, and a notch 31 is provided in the corresponding flange 1d of the shoulder hole. The flange portion 2d is provided with a plurality of locking holes 4, 4, . Both rails 1 and 2 are locked by the locking piece 51 of the locking member being in communication engagement with the locking member.
The locking piece 51 connects the upper rail 1 to the hole 3 and the notch 31.
The locking mechanism engages with the hole 4 of the lower rail 2 at two locations (here and at the intermediate position), and therefore the locking strength can be significantly increased without using separate parts.

Further, in the present invention, the roller 8 is disposed between the upper surface portion 1a and the lower surface portion 2a of both rails, and the inner surface of the U-shaped 7979 portion 1d of the upper rail and the inverted U-shaped portion of the lower rail are provided.
Since the O-shaped ball 10 is disposed between the lower end of the letter-shaped flange portion 2d, it goes without saying that the rollers 8 and the balls 10 allow smooth sliding between the rails, and the locking mechanism is configured as described above. In combination with this, the roller 8 and the ball 10 can be placed in a position independent of the locking hole or notch, which prevents balls etc. from falling into the locking hole and interfering with sliding. Furthermore, it can be eradicated.

[Brief explanation of drawings]

1 to 7 show a first embodiment of the present invention.
The figure is a cross-sectional view, and Figure 2a is a plan view of the upper rail.
Fig. 2 is also a side view, Fig. 3 a is a plan view of the lower rail, Fig. 3 is a side view, Fig. 4 a is a plan view of the locking member, and Fig. 4 is B in Fig. 4 a. directional view,
FIG. 4C is a view taken in the direction of arrow C in FIG. 4a, FIG. 5a is a plan view of the lever bracket, and FIG. 5A is a side view of the lever bracket. FIG. 6a is a plan view of the retainer, FIG. 6 is a view taken in the direction of arrow B in FIG. 6a, and FIG. 6C is a view taken in the direction of arrow C in FIG. 6a. FIG. 7a is a plan view of the slider, and FIG. 7a is a side view of the slider. FIG. 8 is a sectional view showing a partially modified example of the embodiment. 1...Upper rail, 2...Lower rail, 3.4...Lock hole, 31...
... Lock notch, 5 ... Lock member,
51...Lock retaining piece, 6...Bracket fixed to the upper rail, 7...Operation lever.

Claims (1)

[Claims] 1. An upper rail consisting of a side wall that hangs down from both sides of the top surface of the flat plate through the shoulders, and a U-shaped flange that is bent inward from the side surface, and from both sides of the flat bottom surface. A lower rail consisting of a rising side surface and an inverted U-shaped flange bent outward from the side surface is assembled in a slidable manner by engaging both flanges with each other, and the upper and lower surfaces of both rails are assembled. A ball is provided between the inner surface of the flange portion of the upper rail and the lower end of the flange portion of the lower rail. A hole is provided in the flange portion of the lower rail, and a notch is provided in the flange portion corresponding to the hole in the shoulder portion.On the other hand, a plurality of locking holes are provided at a constant pitch along the longitudinal direction of the flange portion of the lower rail. The upper rail and the lower rail are configured so that the upper rail and the lower rail are locked together by the locking piece of the locking member communicating and engaging with the locking hole of the lower rail, the locking hole of the lower rail, and the notch of the upper rail. Automotive seat adjuster.