JPS6027715Y2 - Steering lock device safety device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a safety device for preventing a steering locking device of an automobile from locking a steering shaft against the driver's intention while the vehicle is running.

The purpose of this invention is to provide a steering mechanism that does not lock the steering shaft when the key is turned from the drive position to the lock position, but only locks the steering shaft when the key is completely removed from the lock position. This prevents accidental locking of the shaft, but in order to further increase safety, an operating member other than the key is provided.
The structure is such that the key cannot be rotated to the lock position unless the operating member and the key are operated at the same time, in order to prevent automobile accidents caused by inability to steer due to accidental locking of the steering shaft.

Hereinafter, embodiments of the present invention will be explained based on the drawings.
2, a rotor 3 is rotatably fitted into an outer 2 of a cylinder lock which is fitted into a housing 1 and fixed thereto.

A retaining plate 5 is provided in the narrow groove 3' near the tip of the rotor 3 and is biased by a spring 4 in the direction of protruding from the rotor 3.
The outer 2 has an engaging portion 2' that receives and engages the protruding portion of the retaining plate 5 from the rotor 3 to rotatably hold the rotor. A stepped portion 2'' with which the retaining plate 5 abuts and engages in the middle of the rotation from the traveling position to the locking position of No. 3, and an inner circumferential wall having a through hole 2'' adjacent to the stepped portion 2''. 2″′ is provided.

The head 5' of the retaining plate 5 slides on the inner circumferential wall 2u'' and holds the retaining plate 5 so that it does not protrude beyond a predetermined amount.

The operation button 6 includes a flange-like locking protrusion 6' provided on the outer periphery of the open end of the bottomed cylindrical body, and a plurality of grooves 6'' extending from the open end to the center of the body in the axial direction. It has a push rod 6'' as a release member extending from the bottom and protruding from the open end, and the tip of the push rod 6'' comes into contact with and locks the stepped portion 2'' of the outer 2 with an appropriate gap. The housing 1 is slidably fitted into a through hole 1' provided in the housing 1 so as to face each other, and is biased outward from the housing by a spring 7.

On the other hand, a locking lever 8 pivotally supported on the outer 2 is biased counterclockwise by a spring 9, and when the key 10 is inserted into the rotor 3, the locking lever 8 is pivotably supported around the key insertion date of the rotor. It is rotated clockwise via the actuator 11.

In addition, a lock shaft 13 slides between an extended position and a retracted position in conjunction with the rotation of a cam 12 that rotates integrally with the rotor 3, and is always urged in the extended direction by the elastic force of a spring. A retaining groove 13' is provided which engages the locking lever 8 when in the retracted position and locks the lock shaft 13 so that it does not protrude even when the rotor 3 is rotated from the running position to the locking position.

To explain the operation of the steering lock device according to the present invention configured as described above, when the key 10 in the running position is turned in the direction of the lock position, the locking mechanism inserted into the rotor 3 is inserted between the running position and the locking position. The stop plate 5 is the outer 2
It abuts and engages with the stepped portion 2'' of the lock to prevent rotation to the lock position.

When the operation button 6 is pushed in, the push rod 6'' passes through the through hole 2'' of the outer 2 and comes into contact with the head 5' of the retaining plate 5, and the retaining plate resists the biasing force of the spring 4. The key 10 can be turned to the lock position by pushing down the key 5 to separate it from the stepped portion 2'' of the outer 2, and turning the key 10 while keeping it in that state.

Next, the key 10, which has been turned to the lock position, is moved to the rotor 3.
When the locking lever 8, which had been rotated clockwise by the key 10 via the actuator 11, is rotated counterclockwise by the elastic force of the spring 9, it is removed from the engagement groove 13' of the lock shaft 13. The lock shaft 13 then protrudes from the housing 1 due to the elastic force of the spring and locks a steering shaft (not shown).

As mentioned above, it is not possible to lock the steering shaft by simply operating the key, but it is necessary to simultaneously operate the operation buttons in the middle of key operation, so it is more reliable than conventional steering lock devices. This can prevent accidental locking of the steering shaft.

Also, the retaining plate has traditionally been used to prevent the rotor from coming off the outer, so in this case,
There are only two additional parts: the operation button and the spring.
Assembly is a simple task of simply pushing the operating button fitted with a spring into the through hole of the housing at the end of assembly, so it can be manufactured at a very low cost.

In addition, in the above embodiment, the operation button directly pushes the stopper plate, but if the operation button cannot be installed at the position of the stopper plate due to constraints on the vehicle side, the embodiment shown in Fig. 3 with additional parts added may be used. As in the example, the retaining plate 5 may be pushed through the additional lever 14.

In this case, as shown in the figure, one end of the lever 14 is made circular,
By sandwiching the circular portion between the housing 1 and the outer 2, the lever 14 can be rotatably supported without using a shaft.

[Brief explanation of drawings]

Fig. 1 is a vertical sectional view of the steering lock device of the present invention, and Fig. 2 is a cross-sectional view taken along nm' in Fig. 1 showing an embodiment of the main part of the present invention.
3 is a longitudinal sectional view showing the main parts of another embodiment of the present invention. 1...Housing, 1'...Through hole, 2
...outer, 2z...stepped section, 3...
...Rotor, 3'... Thin groove, 4...
・Spring, 5... Retention plate, 6...
・Operation button, 7...Spring, Death...
・Locking lever, 10...Key, 11...
...Actuator 12 ...Cam, 1
3...Lock shaft.

Claims (1)

[Scope of Claim for Utility Model Registration] A steering lock device that locks the steering shaft when the key inserted in the cylinder lock is turned from the travel position to the lock position and pulled out, has a retaining plate and a spring near the tip. A rotor that has a narrow groove for insertion and is rotatably fitted into the outer part of the cylinder lock, and a retaining plate that is biased by a spring in the direction of protruding from the rotor and is slidably fitted into the narrow groove of the rotor. and an engaging portion that receives the protruding portion of the retaining plate, and an inner circumferential wall that slides into contact with the head of the retaining plate and maintains the protrusion of the retaining plate at a predetermined amount, and the inner circumferential wall has a position where the rotor runs. A stepped portion that the retaining plate comes into contact with in the middle of the rotation from the to the lock position, an outer having a through hole formed at or near the stepped portion, and the outer is fitted and fixed, and the outer is fitted in a hole corresponding to the through hole of the outer. a housing having a through hole formed therein; an operating button slidably fitted into the through hole of the housing; the spring biasing the operating button outward of the housing; and the spring interlocking with the operating button. and a release member that pushes down the retaining plate inserted through the through hole of the outer and abuttingly engaged with the stepped portion against the biasing force of the spring to separate it from the stepped portion. Safety device for steering lock device.