JPS6130915Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a slide rail structure for seats in automobiles, etc.

BACKGROUND OF THE INVENTION A front seat of a passenger car or the like is provided with a slide device, and is configured so that the seat can be moved back and forth in accordance with the body shape of the occupant.

The slide device is provided at the bottom of the seat, and is disclosed in, for example, Japanese Utility Model Application No. 52-119620 and Japanese Utility Model Application No. 119620/1983.
Various structures have been devised, as shown in Publication No. 33121 and the like. In contrast, the present invention relates to a structure for limiting the range of movement of the seat in this device, but before going into its explanation, we will first explain a conventional slide rail structure as shown in Figs. 1 and 2. I will explain.

As shown in FIG. 1, front rollers 3 and rear rollers 4 are interposed to freely roll between a lower rail 1 fixed to a floor or the like and an upper rail 2 attached to a seat. In order to prevent the rollers 3 and 4 from falling off in the front and back direction, stoppers 1a and 1b are provided at the front and rear of the lower rail 1, respectively, and stoppers 2 are provided at the front and rear of the upper rail 2, respectively.
a and 2b are provided. Furthermore, a stopper 2c is provided at the center of the upper rail 2 to prevent the rollers 3 and 4 from shifting excessively.

As shown in FIG. 2, when the upper rail 2 moves forward with respect to the lower rail 1 (indicated by a solid line), the front roller 3 moves between the stoppers 1a and 2.
c and is regulated, and the rear roller 4 comes to hit the stopper 2b. Also, when the top rail 2 moves backward (as shown by the dotted line), the stopper 2
a, 2b, 2c become 2a', 2b'2c',
The rollers 3 and 4 are in the state 3' and 4', and the roller 4' is regulated by being sandwiched between the stoppers 1b and 2c'.
The roller 3' comes into contact with the stopper 2a'.

In contrast, the structure of the present invention provides a notch along the side surface of the lower rail that corresponds to the range of movement of the seat, has claws cut out on the side surface of the upper rail, and has a rolling member interposed above the lower rail. After the upper rail is assembled, the claw portion of the upper rail is bent into the notch of the lower rail so that the upper rail can be moved within the notch.

Next, the structure of the present invention will be explained with reference to the embodiments shown in FIGS. 3 to 5.

The upper rail 5 shown in FIG. 3 is attached to the seat, and the lower rail 6 shown in FIG. 4 is fixed to the floor side. A rolling member (not shown) such as a roller is interposed on the lower rail 6, and the upper rail 5 is fitted thereon. That is, as shown in FIG. 5, the upper rail 5 is assembled so that the flange portions 5a on both sides of the upper rail 5 fit outwardly from the flange portions 6a on both sides of the lower rail 6, and the upper rail 5 is attached in the longitudinal direction of the lower rail 6 (seat It is designed to move along the front-to-back direction).

In order to adjust the seat in the longitudinal direction and maintain the adjusted position, the upper rail 5 is provided with an adjuster lever 7, and the lower rail 6 is provided with several notches 6b. When the upper rail 5 is assembled to the lower rail 6, the hook portion 7a provided at the end of the adjuster lever 7 is attached to the spring 8.
The biasing force engages the notch 6b of the lower rail 6.

To adjust the longitudinal position of the seat, push the grip part 7b of the adjuster lever 7, remove the hook part 7a from the notch part 6b against the bias of the spring 8, and move the top rail 5 to an appropriate position. When the grip portion 7b is then released, the hook portion 7a engages with another notch portion 6b due to the bias of the spring 8, and the seat with the upper rail 5 attached is held in that position.

Now, in the present invention, the flange portion 6a of the lower rail 6 is provided with a cutout portion 6c having a length corresponding to the movement range of the seat, and the upper rail 6
A claw portion 5b is cut out from the flange portion 5a.
After assembling the upper rail 5 to the lower rail 6, as shown in FIG.
Fold it inside c to form 5b'.

Since the claw portion 5b is a part of the upper rail 5, it moves together with the upper rail 5, but it is always located within the notch portion 6c, and when it comes into contact with both ends of the notch portion 6c, it acts as a stopper mechanism and limits the movement range of the upper rail 5. Try to limit it. That is, this restricts the movement of the seat in the longitudinal direction.

As mentioned above, in order to limit the range of movement of the seat, there is a conventional method in which a rolling member such as an interposed roller is placed against a stopper provided on the rail as explained in the conventional example, but the present invention The stopper mechanism is provided separately regardless of the rolling member, and the claws and notches are formed on the side surface of the upper rail and the side surface of the lower rail for assembly, so the number of parts is reduced. This has the advantage that the range of movement of the seat can be reliably regulated without increasing the number of seats.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing a conventional slide rail structure, Fig. 2 is an explanatory diagram of the structure shown in Fig. 1 when it moves, and Figs. The perspective view shown in FIG. 5 is an enlarged sectional view taken along line A--A in a state in which both the rails shown in FIGS. 3 and 4 are combined. 1... Lower rail, 1a, 1b... Stopper,
2...Atsupa rail, 2a, 2a', 2b, 2b',
2c, 2c'... Stopper, 3, 3'... Front roller, 4, 4'... Rear roller, 5... Upper rail, 5a... Flange portion, 5b, 5b'...... Claw portion, 6... Lower rail, 6a...Flange part, 6
b...Notch part, 6c...Notch part, 7...Adjuster lever, 7a...Hook part, 7b...Grip part, 8...
…Spring.

Claims (1)

[Scope of utility model registration request] In a seat slide device fitted with an upper rail attached to the seat with a rolling member interposed on the lower rail fixed to the floor side, a notch corresponding to the movement range of the seat is provided along the side surface of the lower rail. A slide rail structure characterized in that a claw part is cut out on a side surface of the upper rail, and the claw part is bent into the cutout part so as to move within the cutout part.