JPS633863Y2 - - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application This invention relates to a slide lock device for a seat in an automobile, etc., which can slide the seat in the longitudinal direction of the vehicle body and lock it at a desired position.

(b) Prior art Conventional slide lock devices are, for example,
57-139448 as shown in FIGS. 1 and 2. That is, of the pair of left and right slide lock devices, FIG. 1 shows the lever side (not shown) that is directly operated by a lever, and the lever-less side that is linked by a release wire, which will be described later. This guide rail is a vehicle body side member consisting of a lower rail 2 and a lower rail 3, and a slide rail 4 as a seat side member is slidably provided on the guide rail 1. A plurality of lock holes 6 are provided in the side surface 5 of the slide rail 4 in series in the sliding direction.
Further, a mounting piece 7 is connected to the guide rail 1, and a lock plate 9 serving as a locking member is rotatably attached to the mounting piece 7 via a pin 8. This lock plate 9 has a plurality of first,
The second locking pawls 10 and 11 are integrally provided in a straight line at a predetermined angle θ so that they can be simultaneously locked in the lock holes at a predetermined angle θ of the lock plate, and are selectively attached to either of the lock holes 6. Each of the locking claws can be locked at the same time. Further, a raised piece 13 for fixing the release wire 12 is provided on the upper surface of the lock plate 9, and a return spring 14 is provided between the lock plate 9 and the guide rail 1.
is being strung up.

Therefore, by operating the lever side, the lock plate 9 is rotated by a predetermined angle θ or more via the release wire 12, and the first and second locking pawls 1 are rotated.
0 and 11 from the lock holes 6 and 6 at the same time, the slide rail 4 becomes slidable with respect to the guide rail 1, and the seat can be adjusted in the longitudinal direction. Further, when the seat is stopped at a desired position and the release wire 12 is loosened, the lock plate 9 is rotated in the direction of arrow A by the return spring 14, and the first and second locking claws 10, 1
1 are simultaneously engaged and locked in the lock holes 6, 6 at a predetermined angle θ.

However, in the conventional slide lock device configured as described above, the first and second locking claws 1
The widths of 0 and 11 are formed to be approximately the same all the way to the tip in order to maintain lock strength and prevent the lock from coming off. Therefore, even if the lever side is locked due to some wobbling, the tips of the first and second locking pawls 10 and 11 on the leverless side are locked against the side surface of the slide rail 4, as shown in FIG. 5, there was a problem in that the interference width C became wide and synchronization lock failures were likely to occur. On the other hand, in order to make the lock smooth, first and second locking claws 10 and 11 are provided.
It is also possible to taper the lock, but this would cause the lock to slip out more easily, resulting in insufficient locking strength.

(c) Purpose of the invention This invention was made by focusing on the problems of the conventional technology.While maintaining the locking strength,
To provide a seat slide lock device capable of smoothly locking a seat.

(d) Structure of the invention In order to achieve this purpose, this invention provides a locking member with a locking claw at the tip of the locking claw.
A tapered lock guide part is integrally added.

(e) Embodiment An embodiment of this invention will be described below based on the drawings.

3, 4, and 5 show an embodiment of this invention, and the same components as those of the conventional example shown in FIG. 1 are given the same numbers and their explanations will be omitted.

First, to explain the structure, numeral 15 is a lock plate as a lock member. This lock plate 15 is rotatably attached to the guide rail 1 via a pin 16. This lock plate 1
5 is provided with an L-shaped bent piece 17, and this bent piece 17 has first and second locking claws 18,
19 are integrally provided. As shown in FIG. 5, this first locking pawl 18 at the very tip has a conventional linear portion shown by a dashed-dotted line that allows each locking pawl to lock simultaneously at a predetermined angle of the lock plate 15. An extended and tapered guide portion 20 is integrally formed. That is, at a predetermined angle .theta. of the lock plate 15, the first locking pawl 18 at the tip end protrudes toward the slide rail 4 by a distance b. The guide portion 20 and the locking pawl 18 are continuous with a radius, and the tip of the guide portion 20 is rounded.

Next, the effect will be explained.

When the seat is slid back and forth, when the lock plate is rotated by operating the lever, the lock plate 15 on the leverless side also rotates via the release wire 12, and the first and second locking claws 1
8 and 19 are pulled out from the lock holes 6 and 6. Therefore, the slide rail 4 becomes free and the seat can be moved in the front and back direction. When stopping and locking the seat at a desired position, when the lever is released, the lever side is locked. Along with this, the lock plate 15 on the leverless side, which is interlocked via the release wire 12, is also returned to its original position by the return spring 14, as shown in FIG. At this time, since the first locking claw 18 at the tip end is formed as long as the guide portion 20, it hits the side surface 5 of the slide rail 4 before the second locking claw 19 does. At this time, the interference C between the side surface 5 and the guide section 20 is almost eliminated, and by just moving the sheet a little, it is guided by the guide section 20, the first locking pawl 18 locks into the lock hole 6, and then the remaining third 2 locking claw 19
is locked into the adjacent lock hole 6 and the slide rail 4
is locked so that it cannot slide. In the locked state, the first locking claw 18 engages with the lock hole 6 at a portion having a sufficient width for locking, and the locking claw 18 having a sufficient width becomes shorter than before. Therefore, the lock strength is maintained.

In the above embodiment, the lock plate on the leverless side has been described, but the lock plate on the lever side may also be formed in the same manner. Further, the number of locking claws is not limited to two, but may be three or more, as long as the locking claws are aligned in a straight line at a predetermined angle, and only the locking claw on the tip side forms a guide part. The shape of the portion is not particularly limited to the example.

(f) Effects of the invention As explained above, according to this invention, a tapered lock guide portion is added to the tip of the plurality of locking pawls of the locking member, so that the lock can be locked easily. When the lock is locked, it is guided by the tapered lock guide and locking is easily performed, and after locking, the lock is securely locked by the locking pawl and sufficient locking strength can be maintained.

[Brief explanation of the drawing]

Figure 1 is a perspective view of a conventional slide rail device.
FIG. 2 is an explanatory view of the operation, FIG. 3 is a cross-sectional plan view of the main part showing an embodiment of this invention, FIG. 4 is an enlarged plan view of the main part, and FIG. 5 is an explanatory view of the operation. 1... Guide rail (vehicle side member), 4... Slide rail (seat side member), 6... Lock hole,
15... Lock plate (lock member), 18,
19...Latching pawl, 20...Lock guide portion.

Claims (1)

[Scope of utility model registration request] The seat side member is slidably attached to the vehicle body side member, and includes a plurality of lock holes connected in the sliding direction of either the vehicle body side member or the seat side member, and a lock hole rotatably formed in the other. In a seat slide lock device having a lock member having a plurality of locking pawls that can be engaged with and detached from the seat, the locking member has a tapered lock guide portion at the tip of the plurality of locking pawls. A seat slide lock device characterized by integrally adding.