JPS60143143A - Lock device for automobile bucket seat - Google Patents

Abstract

PURPOSE:To prevent a bucket seat from floating up, by engaging a fixed hinge with a movable one. CONSTITUTION:A forklike movable hinge 4 is rotatably attached to a fixed hinge 3, while a lock lever 6 is pivotally installed in an adapter plate 5 to be tightly attached to the movable hinge 4. A tip end 6a of the lock lever 6 is made to project out of a guide hole 10 on a side wall of the movable hinge 4. One end of a coil spring 8 is engaged with a base part of the lock lever 6 while the other end is engaged with a part of the movable hinge 4. A clawlike lock part 11 to be engaged with the lock lever 6 is projectingly formed in the fixed hinge 3, and a circular guide part 12 is connectedly installed therein. The fixed hinge 3 is attached to a wall surface or a seat of an automobile, and the movable hinge 4 is as well attached to a bucket seat, thereby preventing the seat from floating up, thus a lockup in time of folding the seat is made possible to be done.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a locking device for a foldable seat installed in an automobile.

When the automobile seat 1 as shown in FIG. 1 is not in use, the seat back and seat cushion are folded and rotated to come into contact with the wall surface 2 of the automobile, as shown in FIG. It is possible to expand the space. If the hinge rotation of such a folding seat "1" is not locked when the seat is seated, it will rotate around the hinge part and float up when driving on a rough road, making the seating property unstable. This invention provides a locking device for preventing a folded sheet from lifting up, and an embodiment of the present invention will be described in detail below with reference to FIG.

In FIG. 2, a two-pronged movable hinge 4 is rotatably attached to the fixed hinge 3. As shown in FIG. This installation is
Fixed and movable cylinder hinges 3 and 4 have bolt holes 3a,
3a and mounting holes 4a, 4a are formed, and stepped bolts 9.9 are screwed into the bolt holes 3a, 3a, whereby the movable hinge 4 is attached to the stepped port 9.
, 9, and is rotatable around a rotation axis connecting the parts. A mounting plate 5 is fixed inside the movable hinge 4, and the base of a locking rod 6 is pivotally attached to the mounting plate 5 via a stepped pink. The tip 6a of this locking rod 6
protrudes outward from the oblong guide hole 10 formed in the side wall of the movable hinge 4, and the tip 6a is operable, and further extends from the pivot point with the stepped pink to the base. One end of a coil spring 8 is locked to the side, and further, the lower end of this coil spring 8 is locked to a part of the movable hinge 8,
As a result, the locking rod 6 is biased so that its tip 6a rotates toward the fixed hinge 3.

On the other hand, a claw-shaped lock portion 11 that engages with the lock rod 6 is formed protruding from the fixed hinge 3, and an arc-shaped guide portion 12 is connected upwardly from the lock portion 11.

In such a locking device, the rigid rectangular hinge 3 is attached to the wall of the automobile or the side of the seat, and the movable hinge 4 is attached to the seat to be folded, so that the seat does not rise up or when folded. can be locked. That is, when folding the seat, the locking rod 6 is slid in the anti-biasing direction, that is, toward the seat to release the locking member 11, and when the seat is folded, the movable hinge 4 rotates upward. The locking rod 6 also slides on the guide portion 12 and comes into contact with the end portion of the guide portion 12, whereby the end portion and the locking rod 6 are engaged and locking is performed during folding. Next, in order to set the seat from the folded state to the seated state, it is possible to rotate the seat in the setting direction, and thereby the locking rod 6 moves on the arc-shaped guide portion 12 in the opposite direction as described above. It slides in the direction and engages with the claw-shaped locking portion 11 to lock in the set state. When this lock is applied, the coil spring 8
Since the locking rod 6 is biased in the locking direction, it will not come off inadvertently and the sheet will also be prevented from lifting up.

Note that such a locking rod 6 can be attached to a movable hinge, or it may be attached to a fixed hinge. In this case, the locking portion is formed on the movable hinge and locking becomes possible. Further, the biasing of the locking rod may be done not by a coil spring but by another spring such as a torsion spring, and furthermore, the movable hinge and fixed hinge may be attached by other shafts instead of stepped bolts. It's okay.

Therefore, according to the present invention configured as described above, the seat does not lift up when the seat is set, improving the stability of the seated person, and also locks the seat when it is folded, so there is no need to worry about inadvertently. There is no rotation. Also, since this device is installed and functions within the hinge,
The exposed portion is small, the appearance is not impaired, the structure is simple, the operability is improved, and it can be provided at a low cost.

[Brief explanation of the drawing]

FIG. 1(a), ←) is a perspective view showing a set state and a folded state of a folded sheet, and FIG. 2 is an exploded perspective view of an embodiment of the present invention. 3...Fixed hinge, 4...Movable hinge, 6...Lock rod, 8...Coil spring Patent applicant Hideaki Tosa, Patent attorney, NHK Spring Co., Ltd.

Claims (1)

[Claims] A movable hinge is rotatably attached to the fixed hinge, and a reciprocating lock rod biased in the locking direction is attached to one of the hinges, and the lock rod is engaged. A lock portion for locking the rotation of the movable hinge is formed on the other hinge, the fixed hinge is attached to a wall surface of the automobile or the inner surface of the seat, and the movable hinge is folded. A locking device for a folding seat for an automobile, characterized in that the locking device is attached to a folding seat.