JPH0125059Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a seat slide device for adjusting the position of a seat in an automobile or the like in the longitudinal direction.

This type of seat slide device is generally composed of a lock mechanism including lock teeth provided on the lower rail side in the longitudinal direction and a lock lever provided on the upper rail side to engage with the lock teeth. In order to make effective use of the space, the lock teeth are often provided facing inward. Therefore, when a rear seat occupant attempts to put his or her feet under the front seat, the lock teeth become an obstacle, and there is a danger that the passenger's foot may hit the lock teeth during a collision or sudden stop.

The present invention was developed in an attempt to solve these conventional problems, and its purpose is to expand the leg space for rear seat passengers and to prevent rear seat passengers from hitting their feet against the lock teeth. To provide a seat slide device that provides stable sliding and is difficult to unlock.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

As shown in FIGS. 1 to 6, lock holes 2a are formed at predetermined intervals on the web 1a of the lower rail 1, which is fixed in the front-rear direction of a floor panel (not shown) and has a generally concave cross section. The plate 2 is fixed by spot welding or the like, and an upper rail 3 having a shape that surrounds the lower rail 1 from above is slidably fitted to the lower rail 1. The inner end of the flange 3b of the upper rail 3 is coated with a synthetic resin (such as polyacetal, nylon, etc.) that has excellent friction resistance and a small coefficient of friction so that it can slide smoothly on the lower rail 1.
Alternatively, a shoe 4 made of a ferrous sintered alloy or the like is attached, and a similar shoe 5 is also attached to the upper end of the lock plate 2 at a position in contact with the web 3a of the upper rail 3. Note that the shoes 4 and 5 can be integrally molded by injection molding if they are made of synthetic resin.

Further, a guide piece 3c parallel to the lock plate 2 is provided at an appropriate position of the web 3a on the upper rail 3 by cutting and bending or using a separate member.
A guide hole 3d is formed in the guide piece 3c at a position approximately at the same height as the lock hole 2a of the lock plate 2. Furthermore, L is placed on the web 3a of the top rail 3.
A letter-shaped lever bracket 6 is fixedly installed, and a letter-shaped operating lever 7 having a pin hole 7a formed in the middle part is rotatably attached to the lever bracket 6 by using a pin 8. A spring 9 is attached to the pin 8 to urge the operating lever 7 to rotate clockwise in FIG.

Further, a connecting hole 7b is formed at the lower end of the operating lever 7, and the tip of the connecting hole 7b is inserted through a guide hole 3e provided in the flange 3b of the upper rail 3 and a guide hole 3d of the guide piece 3c. plate 2
Insert the step-shaped rear end of the locked lever 10 into the lock hole 2a, hold it in place with the retaining pin 11, and rotate the operating lever 7 counterclockwise to lock the lever 10.
The tip of the lock is configured so that it can be removed from the lock hole 2a. When the operating lever 7 is rotated, the operating lever 7 rotates about the pin 8, and the lock lever 10 moves horizontally guided by the guide holes 3e and 3d. The dimensions of the connecting hole 7b are selected so as to be able to absorb relative vertical displacement between the two.

Next, the specific operation of the seat slide device will be explained. Normally, the operating lever 7 is urged to rotate clockwise by the force of the spring 9, and the tip of the locking lever 10 is engaged with the locking hole 2a, so that the upper rail 3 is locked with respect to the lower rail 1. be.

From this state, when the operating lever 7 is rotated counterclockwise in FIG. 1, the lock lever 10 moves to the right while being guided by the guide hole 3d of the guide piece 3c and the guide hole 3e of the upper rail 3. Therefore, its tip comes off from the lock hole 2a. As a result, the locked state between the upper rail 3 and the lower rail 1 is released. Therefore, the upper rail 3, ie, the seat, can freely move in the front and back direction along the lower rail 1. During this movement, the upper rail 3 is supported at three locations: both side end portions of the lower rail 1 and the upper end portion of the lock plate 2, so that a stable sliding condition can be obtained.

After adjusting the movement of Atsupa Rail 3 in the front and back direction,
When the operator releases the operating lever 7, the operating lever 7 rotates clockwise due to the force of the spring 9 and attempts to return to the locked position. Therefore, even if the tip is not inserted into the lock hole 2a at this point,
By moving the upper rail 3 slightly forward or backward, the tip of the lock lever 10 fits into the lock hole 2a in the vicinity thereof, and the upper rail 3 and the lower rail 1 are locked again. In the above locked state, the lock lever 10 has guide holes 3d,
The lock lever 10 is fitted into the lock hole 2a even when excessive deformation is restrained by the lock lever 10, and since the fitting portion of the lock lever 10 is not a notch but a lock hole 2a, the lock strength is high. Hard to come off.

In the above embodiment, the shoe 4 is attached to the inner end of the flange 3b of the upper rail 3, and the shoe 5 is attached to the upper end of the lock plate 2 over the entire length, but they may be attached only partially. Moreover, as shown in FIG.
2 may be interposed.

As explained above, according to the seat slide device of the present invention, since the lock plate is housed in the space surrounded by the upper rail and the lower rail,
The leg space for rear seat passengers has been expanded, and it is also safer because there is no risk of hitting the lock plate (lock teeth) with your feet in the event of a collision or sudden stop. Further, according to the present invention, not only stable sliding can be obtained, but also the lock is difficult to come off.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view showing the schematic structure of the seat slide device of the present invention, Fig. 2 is an explanatory view of the lower rail and lock plate, Fig. 3 is an explanatory view of the upper rail, and Fig. 4 is an explanation of the lever bracket. 5 is an explanatory diagram of the operating lever, FIG. 6 is an explanatory diagram of the lock lever, and FIG. 7 is an explanatory diagram of another embodiment of the present invention. 1...Lower rail, 2...Lock plate, 2
a... Lock hole, 3... Upper rail, 3e...
Guide hole, 7... Operating lever, 8... Pin, 10
...Rock lever.

Claims (1)

[Scope of utility model registration request] A lower rail fixed to a floor panel, a lock plate having a required number of lock holes and running along the inside of the lower rail, and a lock plate supported by both side end portions of the lower rail and an upper end portion of the lock plate. A sliding upper rail, a guide piece provided on the upper rail parallel to the lock plate, and a tip of the upper rail inserted through each guide hole bored in the upper rail and the guide piece to engage the lock hole of the lock plate. A seat slide device comprising: a lock lever that can be locked; and an operating lever that has one end connected to the rear end of the lock lever and is disposed on the upper rail side so as to move the lock lever.