JPH01192972A - Steering lock device - Google Patents

Abstract

PURPOSE:To improve operational efficiency by preventing the turning of a key cylinder at a stop-releasing position, pushing the key cylinder and making it possible to turn to a lock position when the key cylinder turns from an ON position to the lock position. CONSTITUTION:A housing case 12 to the inside of a casing 12, a key cylinder 16 to the inside of a hole 14 of the case 12, they are placed respectively so as to swivel. A stopping member 31 provided with an inclined surface 31b is so placed to the inside of a hole 30 that it is capable of sliding, and at the same time, a channel 16a, the inclined surface 16b and stopper surface 16c are formed on the outside surface of the cylinder 16. When the key turns from an ON position to a lock position, the member 31 comes into contact with the surface 16c at a stop-releasing position to prevent the turning. When the key is pushed, the toe 31a of the member 31 travels on the surface 16b, engagement of the member 31 and the channel 16a is released, and the key can turn to the lock position.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a locking device, particularly a steering lock device for controlling the rotation of a steering shaft of a motor vehicle.

[41] Modern automobiles use a steering lock that simultaneously controls the steering shaft and ignition switch of the automobile, as shown in, for example, Japanese Patent Application Laid-Open No. 61-295154. This steering lock includes a key cylinder housed in a frame and rotated by a key between a locked position and an unlocked position, a cam rotated together with the key cylinder, and a locked position that engages a steering shaft. The locking rod includes a locking rod that is moved between an unlocked position and an unlocked position by a cam and a spring, and an ignition switch that is operatively connected to the rear of the cam. Insert the key into the key cylinder and rotate it, the key will be in the I'LOCK position, rOFF position J, rA
The engine can be sequentially rotated to the following positions: "CC position", "ON position" for the engine, and "rSTART position" for operating the starter motor. When you pull out the key with "LOCK position".

The key cylinder cannot be rotated, inhibiting the operation of the ignition switch, and the locking rod engages with the steering shaft to prevent rotation of the steering shaft, thereby preventing theft.

While the vehicle is driving on a slope, the driver may remove the key from the steering lock to save fuel or by mistake. In this case, there is a risk that the steering shaft will not be able to rotate and a collision will occur. In order to prevent such accidents, the steering lock is equipped with a device to prevent it from rotating to the "LOCK position".
As shown in Publication No. 9-11908, a device for preventing rotation to the "LOCK position" is provided with a locking piece that engages with the key cylinder rotating member of the steering lock, and after pressing this locking piece, Mechanical structures are known that allow the key to be rotated into the LOCK position. Also.

As shown in Japanese Utility Model Publication No. 55-1966, there is a known mechanical structure in which the key cylinder is provided with an engaging part with the frame, and after the key cylinder and the key are pressed inward, the key can be rotated to the "LOCK position". It is. In this way, “LO
A device to prevent rotation to the LOCK position requires the driver to perform an additional operation of pressing the locking piece or key before rotating the key to the LOCK position, thereby forcing the driver to reconsider removing the key. The aim is to improve safety by providing opportunities for

Part 1 aims to solve the problem: When the car completely stops running and the driver gets out of the car, the key must be turned to the ``LOCK position.'' Preventing rotation to the ``LOCK position.'' The device requires the driver to perform additional operations such as pressing down on the locking piece. However, such an additional operation is cumbersome for the driver because he or she must simultaneously press the locking piece with the fingers of one hand and rotate the key with the other hand. For this reason, there has been a demand for a locking piece mounting structure that can be operated with a simplified operation. However, until now, no steering lock device has been developed that meets these requirements, and there is an urgent need for its development.

SUMMARY OF THE INVENTION An object of the present invention is to provide a steering lock device that can meet the above requirements and prevent erroneous operations by the driver.

Means for Solving 11M The steering lock device of the present invention includes a casing,
A key cylinder arranged in a casing so as to be rotatable and axially movable by a key, a locking member slidably arranged in a hole formed in the casing, and a locking member attached to the outside of the key cylinder. It has a spring that biases the key cylinder, a groove formed on the outer surface of the key cylinder, an inclined surface formed in this groove, and a stopper surface formed in the groove of the key cylinder at right angles to the inclined surface, and a stopper surface formed in the groove of the key cylinder at right angles to the inclined surface. Insert the key and
The key cylinder can be rotated smoothly from the "CK position" to the "ON position", and when the key cylinder is rotated from the "fON position" to the "LOCK position", the locking member touches the stopper surface of the key cylinder when the key cylinder is in the unlocked position. Rotation of the key cylinder is prevented by contact with the key cylinder, and when the key cylinder is pressed, the engagement between the locking member and the stopper surface is released and the key cylinder can be rotated to the "LOCK position".

When the operating key is rotated from the "ON position" to the "LOCK position", the locking member abuts the stopper surface of the key cylinder at the unlocked position where the key cylinder is at a certain angle from the "LOCK position", Rotation of the key cylinder is prevented. When the key is pressed manually, the engagement between the locking member and the stopper surface is released, and the operator can push the key into the "LO" position with only one hand.
It becomes possible to rotate to the CK position.

EXAMPLE Hereinafter, an example of the present invention will be described with reference to FIGS. 1 to 4.

As shown in FIG. 1, a steering lock device 10 of the present invention includes a casing 11 and a cover 13 fixed to the front portion of the casing 11. As shown in FIG.

A housing case 12 is provided inside the casing 11, either integrally with the casing 11 or separately. In the hole 14 formed in the housing case 12.

A key cylinder 16 having a flange portion 15 is rotatably arranged. The key cylinder 16 has a plurality of tumbler holes 1.
7 is formed, and although not shown in detail, each tumbler hole 1
7 is equipped with a tumbler as is well known.

A check lever 20 is attached to the housing case 12 so as to be slidable in the longitudinal direction, and a dog 22 is attached to the hole 21 formed in the flange portion 15 of the key cylinder 16 so as to be slidable in the radial direction.

Further, the locking rod 18 is connected to the hole 1 of the casing 11.
It is installed so that it can move forward and backward from 9. but.

These check lever 20, dog 22, and locking rod 18 have the same structure and effect as those shown in Japanese Patent Publication No. 60-42055, and the key detection member 26 and key detection switch 27 are Showa 59-3
Since it has the same structure and function and effect as those disclosed in Japanese Patent No. 829, detailed description thereof will be omitted.

The inner end 33 of the key cylinder 16 is rotatably mounted within the casing 11 and in the hole 24 of a rotating member 23 disposed coaxially with the key cylinder 16 .

Further, the key cylinder 16 is pressed outward by a spring 25 disposed within the hole 24 of the rotating member 23 between the key cylinder 16 and the rotating member 23 .

As shown in FIG. 1, a locking member 3 is provided in a hole 30 formed in a housing case 12 included in a casing 11.
1 is slidably arranged. A locking member 31 is located inside the hole 30.
A spring 32 is disposed between the key cylinder 16 and the casing 11 to bias the key cylinder f6 against the outer surface of the key cylinder f6. An inclined surface 31b is provided on the inner end 31a of the locking member 31, and the inclined surface 31b abuts on the key cylinder 16. Also.

The outer surface of the key cylinder 16 has a groove 16a, an inclined surface 16b provided at the front of the groove 16a, and a stopper surface 16c formed in the groove 16a of the key cylinder 16 at right angles to the inclined surface 16b.

As shown in FIGS. 3 and 4, the flange portion 15 of the key cylinder 16 is provided with a first protrusion 36 that moves along a cam surface 40 formed on the housing case 12. As shown in FIGS. As is clear from the developed view of the cam surface 40 shown in FIG.
mated to. In addition, the flange portion 1 of the key cylinder 16
5, a second protrusion 37 is formed inside the first protrusion 36. As shown in FIG. 4(A), the housing case 1
2 has two locking parts 42 and 43 that limit the rotation angle of the key cylinder 16. The second protrusion 37 of the key cylinder 16 is disposed between these locking portions 42 and 43, and by coming into contact with these locking portions 42 and 43, the rotation angle of the key cylinder 16 is regulated.

Next, the operation of the steering lock device of the present invention will be explained.

When the key is inserted into the steering lock when starting the engine, the locking member 31 is in the position shown in FIG.

rsTART key cylinder 16 from "LOCK position"
When the locking member 31 is rotated toward the "position", the inner end 31a of the locking member 31
moves along the outer surface of the key cylinder 16, and the inner end 31a of the locking member 31 fits into the groove 16a of the key cylinder 16 at the unlocked position. Furthermore, when you turn the key,
The key cylinder 16 is moved to the "ON position" and the rsTART position, thereby making it possible to unlock the steering lock device and operate the engine. In this way, the key can be freely rotated from the "LOCK position" to the rsTART position. However, rST
When the key is rotated from the "ART position" or "ON position" to the "LOCK position", the inner end 31a of the locking member 31 contacts the stopper surface 16c of the groove 16 in the unlocked position, so the key is moved to the "LOCK position". When the key is depressed in the unlocked position where the key cannot be rotated, the first protrusion 36 provided on the key cylinder 16 is fitted into the recess 41 formed on the cam surface 40, so the key cannot be rotated. It is possible to suppress it. At this time, the key cylinder 16 moves inward.

The inner end 31a of the locking member 31 moves on the inclined surface 16b and escapes from the groove 16, and the engagement between the locking member 31 and the groove 16a is released. Therefore, the key can be rotated to the "fLOCKCi" position and removed from the steering lock.

The above-mentioned embodiments are subject to change. For example,
In FIG. 1, the sloped surface 16b is formed over the entire length of the groove 16a.
6b may also be provided.

In the above embodiment, the locking member 31 and the spring 32 are arranged in the hole 30 formed in the housing case 12.
and a spring 32 may be arranged.

Furthermore, as shown in FIG. 5, the inner end 31a of the locking member 31 may be engaged with the groove 16a. In this case, “LOCK
In the "position", the inner end 31a of the locking member 31 is fitted into the first groove A, and since the inner end 31a abuts against the locking surface 16f, rotation of the key cylinder 16 is restricted. When the key cylinder 16 is rotated from the ``LOCK position'' to the ``rSTART position'', the inner end 31a of the locking member 31 passes from the first groove A, passes through the inclined surface 16d, and fits into the second groove B.

Further, when the key is rotated, the key cylinder 16 is moved to the "ON position" and the "15TART position".

Along with unlocking the steering lock device.

It becomes possible to operate the engine. in this way,"
The key can be freely rotated from the LOCK position to the rsTART position. In the second #B, the inner end 31a of the locking member 31 comes into contact with the locking surface 16a, so that rotation of the key cylinder 16 is restricted.

From the ``rSTART position'' or l'ON position'', press the key ``L''.
When rotating to the "OCK position", the inner end 31a of the locking member 31 touches the stopper surface 16c of the groove 16 in the lock release position.
When the key is pressed in the unlocked position, the inner end 31a of the locking member 31 moves relatively on the inclined surface 16b, so the key cannot be rotated to the LOCK position v1J. can be suppressed.For this reason.

The inner end 31a passes along the route shown by the chain line C in FIG.

It passes through the inclined surface 16g and returns to the first groove A. Therefore, the key can be rotated to the "LOCK position" and removed from the steering lock. In the embodiment shown in FIG. 5, the first projection 36.degree., the second projection 37.degree. Recessed portion 41. It becomes possible to omit the locking parts 42 and 43.

As mentioned above, in this invention, the key cylinder is
When the key is manually pressed when the key is in the unlocked position before the "K position", the engagement between the locking member and the engaging portion is released by movement of the key. Therefore.

Continuously press the key with one hand without taking your hand off the key.
It can be rotated to CK position.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of the steering lock device of the present invention.
Figure 2 is a front view, Figure 3 is a perspective view of the key cylinder, and Figure 4 is a front view.
Figure (A) is a developed view showing the rotation angle range of the second protrusion of the key cylinder whose rotation angle is regulated by two locking parts formed on the housing case, and Figure 4 (B) is a developed view showing the rotation angle range of the second protrusion of the key cylinder formed on the housing case. FIG. 5 is a partial perspective view of a key cylinder showing another embodiment of the present invention. 100. Steering lock device, 11. . casing, 12. , housing case, 1
50. flange portion, 160. key cylinder. 16a, Groove, 16b, Inclined surface, 16c. Stopper surface, 23. , rotating member, 300. Hole, 31
0. Locking member, 320. Spring, 36. . first protrusion, 37. , second protrusion, 40. .

Claims (4)

[Claims] (1) A casing, a key cylinder disposed within the casing so as to be rotatable and axially movable by a key, a locking member slidably disposed within a hole formed in the casing, and a locking member. It has a spring that biases the key cylinder to the outside, a groove formed on the outer surface of the key cylinder, an inclined surface formed in this groove, and a stopper surface formed in the groove of the key cylinder at right angles to the inclined surface. When the key is inserted into the key cylinder, the key cylinder can be rotated smoothly from the ``LOCK position'' to the ``ON position'', and when the key cylinder is rotated from the ``ON position'' to the ``LOCK position'', the key cylinder is not engaged. In the lock release position, the locking member comes into contact with the stopper surface of the key cylinder to prevent rotation of the key cylinder, and when the key cylinder is pressed, the locking member and the stopper surface are disengaged and the key cylinder is released. A steering lock device characterized by being able to rotate to the LOCK position. (2) The steering lock device according to claim 1, wherein the locking member is slidably attached to the housing case fixed within the casing at right angles to the longitudinal axis of the key cylinder. (3) The key cylinder has a protrusion that moves along a cam surface formed on the housing case, and the protrusion is fitted into a recess formed on the cam surface in the unlocked position.
1) The steering lock device described above. (4) The key cylinder has an end that is attached to a hole in a rotating member disposed in the casing so as to be rotatable together with the key cylinder, and the key cylinder is connected to the key cylinder in the hole in the rotating member. The steering lock device according to claim 1, wherein the steering lock device is pressed outward by a spring disposed between the steering lock device and the steering lock device.