JPH0765418B2 - Steering lock device - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock device, and more particularly to a steering lock device for controlling rotation of a steering shaft of a vehicle.

2. Description of the Related Art In today's automobiles, a steering lock for controlling a steering shaft and an ignition switch of the automobile at the same time is used as disclosed in, for example, Japanese Patent Application Laid-Open No. 61-295154. This steering lock includes a key cylinder housed in a frame and rotated between a locked position and an unlocked position by a key, a cam rotated together with the key cylinder, a locked position engaged with a steering shaft, and this engagement. When the key is inserted into the key cylinder and rotated, the locking rod has a locking rod that is moved by the cam and a spring between an unlocked position and an ignition switch that is operatively connected to the rear of the cam. , "LOCK position", "OFF position", "ACC position", "ON position" of the engine, "START position" to operate the starter motor can be sequentially rotated. When the key is removed at the "LOCK position", the key cylinder cannot rotate and the ignition switch is prohibited from operating, and the locking rod engages with the steering shaft to prevent rotation of the steering shaft and prevent theft. .

While the vehicle is traveling on a slope or the like, the driver may pull out the key from the steering lock in order to save fuel or by mistake. In this case, there is a risk that the steering shaft cannot rotate and a collision accident occurs. In order to prevent such accidents, the steering lock has "LOCK position".
Anti-rotation device is provided. For example, Japanese Patent Publication Sho 49-11
As disclosed in Japanese Patent No. 908, the rotation preventing device to the "LOCK position" is provided with a locking piece that engages with a key cylinder rotating member of a steering lock, and after pressing the locking piece, Mechanical structures are known that can rotate to the "LOCK position". Further, as disclosed in Japanese Utility Model Publication No. 55-1966, a mechanical structure is provided in which a key cylinder is provided with an engaging portion with a frame, and the key cylinder is pressed inward together with the key, and then the key can be rotated to a "LOCK position". Is known. Like this, "LOCK
The "position" anti-rotation device provides an opportunity for the driver to reconsider the key removal operation by performing an additional operation of pressing the locking piece or key before the driver rotates the key to the "LOCK position". To improve safety.

Problems to be Solved by the Invention By the way, when the vehicle is completely stopped and the driver dismounts from the vehicle, when the key is rotated to the “LOCK position”, the rotation preventing device to the “LOCK position” is operated. The operator is required to perform an additional operation such as pressing the locking piece. However, such an additional operation is inconvenient for the driver because the locking piece must be pressed by the finger of one hand and the key must be rotated by the other hand at the same time. For this reason, there has been a demand for a locking piece mounting structure that can be operated by a simplified operation. But,
Conventionally, no steering lock device that meets such requirements has been developed, and urgent development has been desired.

SUMMARY OF THE INVENTION An object of the present invention is to provide a steering lock device that can meet the above-mentioned requirements and prevent a driver's erroneous operation.

Means for Solving Problems A steering lock device of the present invention includes a casing,
A sleeve arranged in the casing, a key cylinder arranged in the sleeve so as to be rotatable and axially movable by a key, and a locking member slidably arranged in a hole formed in the key cylinder, A spring for urging the locking member to the outside of the key cylinder, an inclined surface formed on the inner surface of the spring or the sleeve, and the inner surface of the sleeve and the locking member are formed on the same circumference with respect to the inclined surface. It has two stopper surfaces, and the key cylinder can be smoothly rotated from the "LOCK position" to the "ON position" by inserting the key into the key cylinder.
When the key cylinder is rotated from the "ON position" to the "LOCK position", the stopper surface of the locking member abuts the stopper surface of the sleeve at the locking release position of the key cylinder, and the rotation of the key cylinder is blocked. When the key cylinder is pressed at the stop release position, the engagement of the two stopper surfaces is released, and the key cylinder can be rotated to the “LOCK position”.

When the operation key is rotated from the "ON position" to the "LOCK position", the stopper surface of the locking member abuts the stopper surface of the sleeve at the unlocked position where the key cylinder is separated from the "LOCK position" by a certain angle. As a result, the rotation of the key cylinder is blocked.
When the key is manually pressed, the two stopper surfaces are disengaged, and the operator can rotate the key to the “LOCK position” with only one hand.

EXAMPLES Examples of the present invention will be described below with reference to FIGS. 1 to 8.

As shown in FIG. 1, a steering lock device 10 of the present invention includes a casing 11, a sleeve 12 arranged in the casing 11, and a cap fixed to a front portion of the sleeve 12.
With 13. In the hole 14 formed in the casing 11,
A key cylinder 16 having a flange 15 is rotatably arranged. A plurality of tumbler holes 17 are formed in the key cylinder 16, and although not shown in detail, a tumbler is mounted in each tumbler hole 17 as is known.

A check lever 20 is slidably mounted on the sleeve 12 in the lengthwise direction, and a dog 22 is radially slidably mounted in a hole 21 formed in a flange 15 of the key cylinder 16. Further, the locking rod 18 has a hole 19 in the casing 11.
Mounted so that it can move back and forth. However, these check lever 20, dock 22 and locking rod 18 are not
-42055 has the same structure and effect as those shown in Japanese Patent Publication No. 42055, and also has a key detecting member 26 and a key detecting switch.
Since 27 has the same structure and operation and effect as those disclosed in Japanese Patent Laid-Open No. 59-3829, detailed description thereof will be omitted. The key cylinder 16 is rotatably provided in the casing 11 and has a hole 24 in a rotating member 23 arranged coaxially with the key cylinder 16.
Be attached to. Further, the key cylinder 16 is a hole of the rotating member 23.
It is pressed outward by a spring 25 arranged between the key cylinder 16 and the rotating member 23 inside the key 24.

As shown in FIG. 3, the key cylinder 16 has a tumbler hole 17
A hole 30 is formed in parallel with. A locking member 31 is slidably arranged in the hole 30 as shown in FIG. A spring 32 for urging the locking member 31 to the outside of the key cylinder is provided in the hole 30. The locking member 31 has substantially the same shape as a conventional disc tumbler. A hole into which a key is inserted is not formed in the center of the locking member 31, but it may be formed. An inclined surface 34 and a stopper surface 35 are formed on the protruding end portion 33 of the locking member 31.

Further, the flange 15 of the key cylinder 16 has a first protrusion 36 that moves along a cam surface 40 formed on the sleeve 12. As is apparent from the development view of the cam surface 40 shown in FIG. 5 (B), the first protrusion 36 is fitted in the recess 41 formed in the cam surface 40 at the unlocked position such as the “OFF position”. To be done. A second protrusion 37 is formed inside the first protrusion 36 on the flange 15 of the key cylinder 16. Fig. 5 (A)
As shown in FIG. 3, the sleeve 12 has two locking portions 42 and 43 that limit the rotation angle of the key cylinder 16. Key cylinder
The second protrusion 37 of 16 is arranged between these locking portions 42 and 43, and the rotation angle of the key cylinder 16 is regulated by contacting these locking portions 42 and 43.

The inner peripheral surface 50 of the sleeve 12 is provided with an engaging portion 53 having an inclined surface 51 and a stopper surface 52 provided on the same circumference as the inclined surface 51. When a key is inserted into the key cylinder 16 and the key cylinder 16 is rotated from the “LOCK position” to the “ON position”, the locking member 31 is inclined surfaces 34 and 51, so that the locking member 31 resists the elasticity of the spring 32 and the hole 30. To the inside of. In addition, the key cylinder 16
When is rotated, the locking member 31 gets over the engaging portion 53,
It is rotated to the "ON position". Conversely, turn the key cylinder 16 ON.
"OFF position" when rotating from "Position" to "LOCK position"
At the unlocked position of the key cylinder 16 such as
The stopper surface 35 of 31 comes into contact with the stopper surface 52 to prevent the key cylinder 16 from rotating. When the key cylinder 16 is pressed in the "OFF position", the engagement between the stopper surface 35 and the stopper surface 52 of the locking member 31 is released, and the key cylinder 16 is set to "LO position".
It can be rotated to the "CK position".

The operation of the steering lock device according to the present invention will be described with reference to FIGS.

When the key is inserted into the steering lock during engine starting, the locking member 31 is in the position shown in FIG. When the key cylinder 16 is rotated from the “LOCK position” to the “START position”, the key cylinder 16 moves inward against the elastic force of the spring 32, and then, as shown in FIG. Moving. When the key is further rotated, the key is moved to the "ON position" and the "START position", the steering lock device is unlocked, and the engine can be operated. In this way, from the "LOCK position" to the "START position"
The rotation of the key to can be done freely. But,
Press the key from the "START position" or "ON position" to the "LOCK position"
7, the stopper surface 35 of the locking member 31 abuts the stopper surface 52 of the engaging portion 53 in the unlocked position as shown in FIG. 7, so the key is rotated to the “LOCK position”. I can't. When the key is pressed in the unlocked position, the first protrusion 36 provided on the key cylinder 16 causes the cam surface to
Since it is fitted in the recess 41 formed in 40, the key can be pressed. At this time, the locking member 31 moves to the left along the axial direction in FIG. 7 and the engagement with the engaging portion 53 is released. Therefore, as shown in FIG. Can be rotated to pull out from the steering lock.

The above embodiment of the present invention can be modified. For example, in the above embodiment, an example in which the inclined surfaces are formed on both sides of the locking member and the sleeve has been shown, but the inclined surfaces may be formed on either one of them.

EFFECTS OF THE INVENTION As described above, in the present invention, when the key cylinder is in the locking release position before the “LOCK position”, when the key is manually pressed, the movement of the key causes the locking member and the engaging portion to move. The engagement is released. Therefore, it is possible to continuously rotate the key to the “LOCK position” with one hand without releasing the hand from the key.

[Brief description of drawings]

FIG. 1 is a sectional view of a steering lock device according to the present invention,
2 is a front view, FIG. 3 is a perspective view of a key cylinder, and FIG.
The figure is a sectional view of a key cylinder provided with a hole for accommodating a locking member, and FIG. 5 (A) is a second projection of the key cylinder whose rotation angle is restricted by two locking portions formed on a sleeve. 5B is a development view showing the moving state of the cam surface formed on the sleeve and the first protrusion formed on the key cylinder, and FIG. FIG. 7 is a perspective view showing a state in which the key cylinder is in the “LOCK position”, FIG. 7 is a perspective view showing a state in which the key cylinder is rotated from the “LOCK position” to the “ON position”, and FIG.
FIG. 6 is a perspective view showing a state in which it is returned to the “LOCK position” from FIG. 10 …… Steering lock device, 11 …… Casing, 12
...... Sleeve, 15 ...... Flange, 16 ...... Key cylinder,
23 ... Rotating member, 30 ... Hole, 31 ... Locking member, 32 ... Spring, 33 ... Projection end, 34, 51 ... Inclined surface, 35, 52 ... Stopper surface, 36 ... First protrusion, 37 ... Second protrusion, 40 ...
… Cam surface, 41 …… Recess, 42,43 …… Locking part,

 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Hideaki Sakuno 2-8-2 Kamata, Ota-ku, Tokyo Within Japan Metal Industry Co., Ltd. (72) Inventor Hidekazu Sato 2-8-2 Kamata, Ota-ku, Tokyo No. Domestic Metal Industry Co., Ltd. (56) Reference JP-A-49-26937 (JP, A) Jitsukaihei 1-76968 (JP, U) JP-B 49-9853 (JP, B2) JP-B Sho-49 -11908 (JP, B2) Jitsuko Sho 55-1966 (JP, Y2)

Claims (5)

[Claims] 1. A casing, a sleeve arranged in the casing, a key cylinder arranged in the slave so as to be rotatable and axially movable by a key, and in a hole formed in the key cylinder. A locking member that is slidably arranged, a spring that biases the locking member to the outside of the key cylinder, an inclined surface formed on the inner surface of the spring or the sleeve, and the same circumference with respect to the inclined surface. The upper surface has an inner surface of the sleeve and two stopper surfaces formed on each of the locking members, and a key is inserted into the key cylinder to lock the lock.
The key cylinder can be smoothly rotated from the "position" to the "ON position", and the key cylinder can be rotated from the "ON position" to the "LOCK position".
When the key cylinder rotates, the stopper surface of the locking member abuts the stopper surface of the sleeve at the unlocked position of the key cylinder to prevent the key cylinder from rotating, and the key cylinder at the unlocked position. When the key is pressed, the engagement between the two stopper surfaces is released, and the key cylinder can be rotated to the “LOCK position”. 2. The lock member is arranged in parallel with a tumbler hole provided in the key cylinder and has an inclined surface formed at a projecting end portion. Steering lock device. 3. The key cylinder has a protrusion that moves along a cam surface formed on the sleeve, and the protrusion is fitted in a recess formed on the cam surface at the unlocked position. The steering lock device according to claim (1). 4. The steering lock device according to claim 1, wherein the sleeve has two locking portions for limiting a rotation angle of the key cylinder. 5. The key cylinder has an end portion mounted in a hole of a rotating member rotatably arranged in the casing together with the key cylinder, and the key cylinder is in the hole of the rotating member. The steering lock device according to claim 1, wherein the steering lock device is pressed outward by a spring arranged between the key cylinder and the rotating member.