JPS6144056A - Steering lock unit - Google Patents

Abstract

PURPOSE:To secure such a structure as being rigid enough against breakdown, by forming a circumferential surface groove in the specified form, consisting of a release groove and a locking groove where an engaging projection of a manual operating member is engaged, in a rotative member to be turned round by a key, in case of two-motion operating type steering lock unit. CONSTITUTION:This steering lock unit is provided with a manual operating member 12 capable of sliding motion in a direction parallel with an axis of a rotative member 5 turning round together with a key K. The rotative member 5 is also provided with a circumferential surface groove consisting of a locking groove 15 and a release groove 16 to be formed in adjoining with each other in an axial direction, and makes this groove engage a side engaging projection 12a projectingly installed in one side of the manual operating member 12. The release groove 16 extends as far as an OFF position short of a lock position from a start position of the key K, while the locking groove 15 extends as far as the lock position little to a position at the start side from a stopper surface 16a. In addition, at the other end part of the locking groove 15, there is provided with an inclined plane 18 which engages the projection 12a when the rotative member 15 is turned round and makes it move to the release groove 16.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a steering lock device for an automobile, and particularly to a so-called two-behavior steering lock device that prevents a steering shaft from being locked due to an unexpected key operation while driving. /Relating to a grotter device.

1. Prior Art As is well known, a conventional steering lock device has a structure as shown in FIG. 5 and FIG. The position of the rotating member 5 and the ignition switch 4 are controlled by a key ring 3 operated by a predetermined key. Then, a hanger 7 pushed by a spring 6 is engaged with the rotating member 5, and a locking port 8 connected to the hanger 7 is inserted into the collar lO of the steering shaft 9. For the key K inserted into the key cylinder 3, the key is sensed to keep the bunker 7 in the unlocked position at all times, as shown in FIG.
<-11 is provided so that by pulling out the key from the key cylinder 3, the restraint of the hanger 7 is released and the A7 king bolt 8 enters the collar IO.

By the way, in the above-mentioned steering lock device, if the key K is pulled out from the key cylinder 3 while driving, the steering shaft 9 will be suddenly fixed by the locking bolt 8, making it impossible to steer.
Since there is a risk that
Japanese Patent Publication No. 49-11908 discloses a so-called two-action steering lock device that 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. proposed by. 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 the inconvenience that the key operation in the direction of the "5TART" position cannot be performed again until the rotating member is completely returned to the locked position. The uneven cam surface used is composed of a large number of circumferential cams that are adjacent to each other in the length direction of the rotating member, making it difficult to manufacture the rotating member.

Manufacturing costs will also be high.

For this reason, even after once the applicant operates the manual operation member, the applicant can freely operate the 5TAR without returning the key to the locked position.
A structure that allows key operation in the direction of the T" position was proposed in Japanese Patent Application No. 59-100273. That is, this steering lock 5! position is a manual operation member movable in the axial direction of the rotating member. The side engaging protrusions are arranged in the circumferential groove of the rotating member that rotates with the key plate, and the circumferential groove is positioned at different positions in the axial direction and circumferential direction of the rotating member, and the adjacent part is composed of a locking groove and an unlocking groove that are connected to each other, and the side engaging protrusion located in the locking groove is moved to the unlocking groove by rotation of a rotating member at the connecting portion of the locking groove and the unlocking groove. Therefore, this structure has the advantage that if you want to restart the engine after operating the manual operation member, you only need to operate the key again to the S T A R T'' side.

However, in this structure, since the device is installed in a narrow vehicle interior, if there is a restriction on the overall length, the tip of the side engagement protrusion of the manual operation member has to be made thin. is located in the unlock groove,
When a knee or the like hits the manual operation member and the side engaging protrusion is pressed against the side surface of the unlocking groove, there is a risk that the tip of the weak side engaging protrusion may be sheared or deformed.

An object of the present invention is to improve the above-mentioned two-behavior operation type steering lock device so that the manual operation member and the side engagement protrusion are prevented from being deformed even when a strong external force is applied to the manual operation member. There is no structure to get.

Structure of the Invention - To achieve this object, the present invention provides a steering lock that locks and unlocks a steering shaft with a rotating member rotated by a key, which is capable of sliding in a direction parallel to the axis of the rotating member. The side retaining protrusion of the manual operation member is engaged with the circumferential groove of the rotating member, and the circumferential structure is moved to the locked position 1i # when the key is rotated in the locking direction.

an unlocking groove having a stopper surface that engages with the side engaging projection at the front and prevents the rotating member from rotating to the locked position; and an axial direction and a circumferential direction of the rotating member with respect to the unlocking groove. and locking grooves that are located at different positions and connected to each other near the stopper surface, and the side engagement protrusion located in the locking groove is disposed at the connecting portion of the locking groove and the unlocking groove for unlocking the rotating member. In addition to forming an inclined surface that moves into the locking groove, a support wall is formed on the outer circumferential surface of the rotating member along the unlocking groove, on which the base of the tip of the side engagement protrusion swings by itself, thereby eliminating the need for manual self-made members. It is proposed that the load of the base of the side engaging protrusion be received by the support wall during pressing.

-Example- Hereinafter, details of an example of the present invention will be explained with reference to FIGS. 11 to 4.

FIG. 1 is a partially cutaway view of a steering lock device according to the present invention, in which the steering lock includes a manual operating member 12 that is slidable in a direction parallel to the axis of a rotating member 5 that rotates together with a key 4. This manual operation member 12 can be operated by a push button 14 exposed on the curved surface of the casing 13. Further, the side engagement protrusion 12a of the manual self-made member 12 is made to protrude from the side surface of the manual operation member 12 in the centripetal direction of the rotating member 5, and the details are shown in FIG. is engaged in. This circumferential groove is a locking groove 15 and an unlocking groove 1 formed adjacent to each other in the axial direction of the rotating member 5.
6, these locking grooves 1415 and unlocking grooves 16 are located at different positions in the circumferential direction of the rotating member 5, as shown expanded in FIG. 3, and connect the adjacent parts 17. . The unlocking groove 16 is located on the key from the '5 TART' position to the 'L' position.
It extends to the "OFF" position before the OCKoo (locked) position, and has a stow/bar surface 16a with which the side retaining protrusion +2a of the manual operation member 12 engages in the "OFF" position. On the other hand, the locking groove 15 is shifted from the "5TART" offset position with respect to the stopper surface 16a of the unlocking groove 1B to the "LOCK" position.
” (locked) position, and the rotating member 5 is at the “LOCK” position.
K'' position, the side engaging protrusion 12a of the f-motion operating member 12 is placed at the end of the locking groove 15 as shown in the third figure, and in this position the key K is pulled out from the key ring 3. The other end of the locking groove 15 is provided with a locking member that engages and releases the side engagement protrusion 12a of the manual operation member 12 when the rotating member 5 is rotated in the direction of arrow A. Lock groove 18
An inclined surface 18 is formed to allow the movement to occur.

On the other hand, a support wall 18 is protruded from the outer peripheral surface of the rotating member 5 at a position adjacent to the unlock groove 1G, and a side surface 19a of the support wall IS having approximately the same arc length as the unlock groove 16 is an unlock groove. The slope is along 16. Further, the base of the side engagement protrusion 12a of the manual operation member 12 corresponding to the same side surface 18a is connected to the support wall 19.
The locking teeth 20 are inclined to match the shape of the side surface 19a of the locking groove 16, and the engagement of the side locking projection +2a with the unlocking groove 16 prevents strong shearing force and bending moment from acting on the side locking projection 12a. It is prevented.

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 side engagement protrusion 12a of the manual operation member 12 in the locking groove 15 or unlocking position yi18.
Two notches 21 and 2 formed on the side surface of the movable operation member 12
2, a coil spring 23 and a steel ball 24 located in a hole in the casing 13. Of course, the present invention
It is not limited to the configuration of such an S degree mechanism,
For example, as in the moderation mechanism B shown in Fig. 4, the casing 1
It may be a combination of a protrusion 25 formed on the circumferential surface of the manual operation member 3 and an elastic pawl 26 integrally molded on the manual operation member 12.

Since the steering opening device according to the illustrated embodiment has one or more configurations, when a key operation is performed from the "LOCK" position to the "5TART" position, the inclined surface 18 prevents the manual operation member 12 from moving. Side engaging protrusion 12a
is automatically moved to the unlocking groove 16, so that no matter what operating position the key K is in, the key can be freely operated in the direction of the "S T A RT" position. Then, when the steering shaft 9 is locked and fixed in the driving state, and the key K is removed from the key ring 3, the key K
When the manual operating member 12 is rotated to the 'OFF' position and the push button 14 is pressed, the side engaging protrusion 12a of the manual operation member 12 is held in the imaginary line position in FIG. 3, that is, in the locking groove 15 by the moderation mechanism. , and then press the key ``'LOCK'' only by key operation.
In addition, when the key K is rotated again from the imaginary line position in FIG. Since it moves to the unlocking groove 16, it must be turned once to the "LOCK" position as in the conventional case, and then turned again to the "5TAR" position.
This is convenient because the engine can be restarted without the troublesome operation of turning it toward the T" position.

Also,! $1 When the side engaging protrusion 12a of the manual operation member 12 is located in the unlocking groove 16 as shown in the figure, the knee or the like touches the push button 14 and the manual operation member 12 moves to the right in FIG. When a strong force is applied, 1. Since the locking surface 20 at the base of the side engagement protrusion 12a comes into contact with the side surface 19a of the support wall 18, no strong shearing force or bending moment is applied to the side engagement protrusion 12a. . Note that the manual operation member 12
When the side engaging protrusion 12a is located in the locking groove 15, the inner end surface 12b (shown in the first diagram) of the manual operation member 12 is received by the hole bottom surface 27, so that the side engaging protrusion 12a No large external force acts on it.

In the above embodiment, if the support wall 13 is provided on the first rotating member 5, it may seem as if the support wall 18 becomes the same and the key sensing lever 11 cannot operate, but the key sensing lever 11 and the manual The position of the operating member 12 is different in the rotational direction of the rotating member 5, and when the steering lock is unlocked, the key sensing lever 11 is in the wIJ6U1 position.
! It is located at the position shown by J and does not interfere with the movement of support J119 shown by the imaginary line.

-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, when you want to restart after operating the manual operation member, turn it once to the "LOCK" position and then turn it again to the "LOCK" position.
The engine can be restarted without the troublesome operation of turning the rotating member toward the 5TART" position.Furthermore, in the present invention, a support wall is formed on a part of the outer circumferential surface of the rotating member, with which the base of the tip of the side engaging protrusion comes into contact. This can prevent damage to the side engaging protrusion of the manual operation member by simply changing a part of the existing steering lock device.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway plan view of the steering lock device according to the present invention, Fig. 2 is an exploded perspective view of the main parts of the device, Fig. 3 is a developed view of the circumferential groove, and Fig. 4 is a modified example of the moderation mechanism. FIG. 5 is a sectional view of a conventional steering lock device, and FIG. 6 is a sectional view taken along the line Vl-Vl in FIG. 5. 3... Key cylinder, 5... Rotating member, 9... Steering shaft, 12... Manual operation member, +2a... Side engagement protrusion (of manual operation member), 15.
... Locking groove (circling groove), 16... Unlocking groove (circulating groove), +8a... Stopper surface, 18... Inclined surface, 18... Support wall (of rotating member), 19a. ...(the supporting wall) side. Patent applicant Nissan Motor Co., Ltd. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6

Claims (1)

[Claims] 1) In a steering lock in which the steering shaft is locked and unlocked by a rotating member rotated by a key, the side engagement protrusion of the manual operation member that can slide in a direction parallel to the axis of the rotating member is inserted into the steering lock. The circumferential groove is engaged with the side engaging protrusion before the locking position when the key is rotated in the locking direction, thereby preventing the rotating member from rotating toward the locking position. It is composed of an unlocking groove having a stopper surface, and locking grooves 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, and the locking groove and An inclined surface is formed at the connecting portion of the unlocking groove to move the side engaging protrusion located in the locking groove to the unlocking groove of the rotating member, and an inclined surface is formed on the outer circumferential surface of the rotating member along the unlocking groove. A steering lock device characterized in that a support wall is formed with which the base of the tip of the side engagement protrusion comes into contact, so that the load of the base of the side engagement protrusion is received by the support wall when the manual operation member is forcefully pressed. .