JPH042452B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION -Field of Industrial Application- The present invention relates to a steering lock device for an automobile, and in particular to a two-behavior operating type that prevents a steering shaft from being locked due to an unexpected key operation while driving. Relating to a steering lock device.

-Prior Art- As is well known, a conventional steering lock device has a structure as shown in FIGS. 1 and 2, for example, and a casing 2 attached to a steering column 1 includes a key cylinder 3 and an ignition A switch 4 is assembled, and the position of the rotating member 5 and the ignition switch 4 are controlled by the key cylinder 3 operated by a predetermined key K. A hanger 7 pushed by a spring 6 is engaged with the rotating member 5, and a locking bolt 8 connected to the hanger 7 is inserted into the collar 10 of the steering shaft 9.
to fix the steering shaft 9. In addition, the key K inserted into the key cylinder 3
As shown in the second figure, a key sensing lever 11 is provided to keep the hanger 7 in the unlocked position at all times, and when the key K is pulled out from the key cylinder 3, the hanger 7 is released. A locking bolt 8 is arranged to enter a collar 10.

By the way, in the above-mentioned steering lock device, if the key K is pulled out from the key cylinder 3 while the vehicle is running, there is a risk that the steering shaft 9 will be suddenly fixed by the locking bolt 8, making it impossible to steer the vehicle. For,
Conventionally, a so-called two-behavior operation type steering lock device was developed, which prevents the key K from being pulled out from the key cylinder 3 once the key K is inserted, unless another manual operation member is operated.
It has been proposed by Publication No. 11908 and others. However, in this steering lock device, the tip of a manual operating member biased in one direction by a spring is driven along a plurality of stepped cam surfaces partially formed on the circumferential surface of a rotating member. Once the operating member is operated, there is an inconvenience that the key operation in the direction of the "START" position cannot be performed again until the rotating member is completely returned to the locked position. Since the stepped cam surfaces used are composed of a large number of circumferential cams adjacent to each other in the length direction of the rotating member, the rotating member is difficult to manufacture and the manufacturing cost is relatively high.

-Object of the Invention- In view of the problems of the conventional steering lock device as described above, the object of the present invention is to freely move the key toward the "START" position even after operating the manual operation member without returning the key to the locked position. To obtain a steering lock device which allows key operations to be performed and has a simple structure.

-Structure of the Invention- In order to achieve this object, the present invention provides a steering lock device in which a steering shaft is locked and unlocked by a rotating member rotated by a key. While forming a circumferential surface groove along the circumferential direction, a manual operation member that can slide in a direction parallel to the axis of the rotation member is provided beside the rotation member, and a groove is formed on the rotation member and the circumference of the manual operation member. An inner end that engages with the circumferential groove is formed protrudingly on the opposing portion, and when the key is rotated in the locking direction, the inner end of the manual operation member engages with the inner end of the manual operating member before the locking position. an unlocking groove having a stopper surface that prevents rotation of the rotary member to a locked position, and locks that are located at different positions in the axial direction and circumferential direction of the rotating member with respect to the unlocking groove and are connected to each other near the stopper surface portion. Consisting of a groove and
The locking groove and the unlocking groove are connected to each other by forming an inclined surface that moves the inner end of the manual operation member located in the locking groove to the unlocking groove of the rotating member.

-Embodiment- Hereinafter, details of an embodiment of the present invention will be explained with reference to FIGS. 3 to 6.

FIG. 3 is a partially cutaway front view of a steering lock device according to the present invention, in which the steering lock rotates a manual operating member 12 that is slidable in a direction parallel to the axis of a rotary member 5 that rotates together with a key 4. This manual operation member 12 is provided beside the moving member 5 and can be operated by a push button 14 exposed on the front side of the casing 13. Further, an inner end 12a is formed in a portion of the manual operation member 12 facing the circumferential surface of the rotating member 5, and the inner end 12a projects in the circumferential direction. It engages with a circumferential groove formed on the circumferential surface of 5 along the circumferential direction. This circumferential groove consists of a locking groove 15 and an unlocking groove 16 that are formed adjacent to each other in the axial direction of the rotating member 5.
As shown expanded in FIG. 5, the grooves 17 are located at different positions in the circumferential direction of the rotating member 5, and connect adjacent grooves 17 to each other. The unlock groove 16 extends from the "START" position of the key K to the "OFF" position before the "LOCK" position, and at the "OFF" position, the inner end 12a of the manual operation member 12 is engaged. It has a mating stop surface 16a. On the other hand, the locking groove 15 is
It extends from the stopper surface 16a of the unlocking groove 16 from the "START" side position to the "LOCK" position, and when the rotating member 5 is placed in the "LOCK" position, the inner end 12a of the manual operation member 12 is , is placed at the end of the locking groove 15 as shown in Figure 5, and in this position the key K can be pulled out from the key cylinder 3. The other end of the locking groove 15 has a slope that engages with the inner end 12a of the manual operation member 12 and moves it to the unlocking groove 16 when the rotating member 5 is rotated in the direction of arrow C. A surface 18 is formed.

Further, a moderation mechanism A or B is provided between the casing 13, which is a device fixing part, and the manual operation member 12. This moderation mechanism A holds the inner end 12a of the manual operation member 12 in the locking groove 15 or unlocking groove 16 position, and is formed by two notches 19 and 20 formed on the side surface of the manual operation member 12 and a hole in the casing 13. It consists of a coil spring 21 and a rope ball 22 located at. Of course, the present invention is not limited to the configuration of such a moderation mechanism, and for example, as in the moderation mechanism B shown in FIG.
It may also be a combination of elastic claws 24 that are integrally molded into two parts.

The steering lock device according to the illustrated embodiment includes:
With the above configuration, when performing a key operation from the "LOCK" position to the "START" position, the inner end 12a of the manual operation member 12 is automatically moved into the unlocking groove 16 by the inclined surface 18. Because it will be moved,
“START” is pressed no matter which operating position the key K is in.
Key operations in the position direction can be performed freely.
Then, when the steering shaft 9 is locked and fixed in the driving state and the key K is removed from the key cylinder 3, the key K is turned to the "OFF" position and the push button 14 is pressed. The end 12a is located at the imaginary line position in FIG. 5, that is, the locking groove 15.
It is held inside by a moderation mechanism. Therefore, the key K can then be returned to the "LOCK" position only by key operation. Also, when the key K is rotated again from the imaginary line position in FIG. It is convenient because the engine can be started again without the troublesome operation of turning it all the way to the ``LOCK'' position and then turning it again towards the ``START'' position as in the conventional case.

-Effects of the Invention- As is clear from the above description, the steering lock device of the present invention has a simple structure, so it can not only be manufactured at low cost, but also has a convenient structure that can be operated with one hand. Also, if you want to restart after operating the manual operation member, turn it all the way to the "LOCK" position and then press "START" again.
This is very convenient in practice, as it allows the engine to be restarted without the troublesome operation of turning it in the direction of the position.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a conventional steering lock device, FIG. 2 is a sectional view taken along the line - in FIG. 1, FIG. 3 is a partially cutaway front view of a steering lock device according to the present invention, and FIG. FIG. 5 is an exploded perspective view of the main parts of the device, FIG. 5 is an exploded view of the circumferential groove, and FIG. 6 is an exploded perspective view showing a modification of the moderation mechanism. 3...Key cylinder, 5...Rotating member, 9...
Steering shaft, 12...manual operation member,
12a...inner end (of the manual operation member), 15...locking groove (peripheral groove), 16...unlocking groove (peripheral groove), 16
a... Stopper surface, 18... Inclined surface, 19, 20
... Notch, 21 ... Spring, 22 ... Rope ball,
23... Protrusion, 24... Elastic claw, A, B... Moderation mechanism.

Claims (1)

[Claims] 1. In a steering lock device that locks and unlocks a steering shaft using a rotating member that is rotated by a key, a circumferential groove is formed along the circumferential direction on the outer peripheral surface of the rotating member. A manual operating member that is slidable in a direction parallel to the axis of the rotating member is provided beside the member, and a portion of the manual operating member that faces the rotating member and the circumferential surface has an inner end that engages with the circumferential groove. The stopper surface is formed in a protruding manner and has a stopper surface formed in the circumferential groove that engages with the inner end of the manual operation member before the locking position when the key is rotated in the locking direction to prevent the rotary member from rotating to the locking position. A locking groove comprising a locking groove and a locking groove having different positions in the axial direction and circumferential direction of the rotating member with respect to the unlocking groove and connected to each other near the stopper surface, and connecting the locking groove and the unlocking groove. An operating device for a steering lock, characterized in that an inclined surface is formed in the portion thereof to move an inner end of the manual operating member located in the locking groove to an unlocking groove of the rotating member.