JPH08332916A - Steering lock device - Google Patents

Abstract

PURPOSE: To improve a burglar-proof property by a comparatively simple structure. CONSTITUTION: A lock pin 15 energized outward is provided on the side surface of a slider 8 for moving a lock shaft 7 and the movement of the slider 8 is obstructed by the insertion of the lock pin 15 into the storing place of a lock link when a key is taken off at a lock position. The slider 8 itself is thereby, fixed under the lock state of a steering shaft and the lock can not be released by the movement of the slider 8, at such wrong action time as the destruction of a cylinder lock and a burglar-proof property can be improved without cost up so much by only somewhat changing an usual structure.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a steering lock device that locks a steering shaft during parking to prevent theft.

[0002]

5 and 6 are schematic views showing an example of a conventional steering lock device. Reference numeral 1 is a cylinder inner having a key hole, 2 is a cylinder outer that rotatably holds the cylinder inner 1, and the cylinder inner 1 and the cylinder outer 2 constitute a well-known cylinder lock 3. Reference numeral 4 denotes a cam member connected to the cylinder inner 1. When a key (not shown) is inserted into the cylinder inner 1 and rotated, the cam member 4 rotates together, and the rotor of the ignition switch 5 provided coaxially. It is rotated and a predetermined switch operation is performed.

Reference numeral 7 is a lock shaft, 8 is a slider to which the lock shaft 7 is connected, 9 is a lock spring for urging the lock shaft 7, 9a is a lid used for attaching the spring 9, and 10 is each member described above. Is the body that houses. When the key is removed at the lock position, the lock shaft 7 is pushed by the spring 9 to the position where the slider 8 contacts the cam member 4, and the lock shaft 7 projects toward the upper steering shaft (not shown) to lock the steering shaft. It is configured.

On the other hand, the cylinder outer 2 is formed with an accommodating portion 11 along the axial direction to accommodate a lock link 12 and is swingably supported by a support shaft 12a which is movable in the radial direction. The lock link 12 has a key sensing end 12b at one end abutting against a key sensing member 1a provided on the cylinder inner 1, and a locking end 12c at the other end abutting against the slider 8. When the key is inserted into the key, the key sensing end 12b is resisted against the spring 13.
Is pressed, the cam member 4 engages with the slider 8 as the key rotates, and the lock shaft 7 is retracted into the body 10, and the steering lock is released. Further, the locking end 12c of the lock link 12 has the locking groove 8a of the slider 8.
And the slider 8 is prevented from moving to the steering shaft side and being accidentally locked.

In the structure described above, the locked state of the steering shaft is maintained by the lock shaft 7 being pushed by the lock spring 9, and the lock shaft 7 and the slider 8 themselves are not fixed. Therefore, if the portion of the cylinder lock 3 is destroyed and then pulled out to rotate the cam member 4, or the lid 9a is destroyed to eliminate the biasing force of the spring 9, the steering shaft of the steering shaft can be removed regardless of the presence or absence of the key. There is a problem that the locked state is released. However,
In the conventional structure, it is difficult to reliably prevent theft due to such an illegal act in terms of structure or cost.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of this point, and has an object to improve the antitheft property while avoiding an increase in cost with a relatively simple structure.

[0007]

In order to achieve the above object, the present invention moves a slider by a cam member that rotates in response to a rotation operation of a key so that a lock shaft appears and disappears on the steering shaft side. When the key is pulled out at the lock position, the lock shaft is projected toward the steering shaft to lock the steering shaft, and the tip of the lock link that swings according to the insertion / removal of the key is engaged with the side surface of the slider except at the lock position. A steering lock device configured to prevent the lock shaft from projecting to the steering shaft side by providing a lock pin biased outward on the side surface of the slider. When the key is removed in the locked position, insert it into the lock link storage While preventing movement of the slider Te, when a key is inserted is configured to be pushed out from the storage unit by the lock link to a position where it is possible to move the slider.

[0008]

According to the present invention, since the slider itself is fixed in the locked state, even if the cylinder lock or lid is broken, the slider cannot be moved and the locked state of the steering shaft cannot be released. ,
The anti-theft function can be improved with a slight change in structure without increasing the cost.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment shown in the drawings will be described below. FIG.
2 is a perspective view of the slider, and FIGS. 2 and 3 are cross-sectional views of the entire device viewed from the ignition switch side. Also in this embodiment, the same parts as those in the conventional example shown in FIGS. 5 and 6 are designated by the same reference numerals.

The slider 8 has a locking groove 8a formed on one side surface thereof to which the locking end 12c of the lock link 12 is engaged, and further, a lock pin accommodating concave portion 8b is provided in the lower portion thereof, and a spring 16 is provided therein. The lock pin 15 is biased outward, and is housed in the body 10 with the spring 16 and the lock pin 15 housed in the housing recess 8b. A convex portion 1 is provided at the tip of the lock pin 15.
5a is formed, and the position of the lock pin 15 is such that the lock link 12 is just stored when the key is rotated to the lock position and the lock shaft 7 is in a state of protruding toward the steering shaft. It has been selected to come in position 11.

When the key has been rotated to the lock position and has not been removed yet, the lock link 12 is swinging in the direction in which the locking end 12c abuts the side surface of the slider 8, and the lock pin 15 is shown in FIG. Locking end 12c as shown in a)
It is in a state of being pushed by and pushed into the accommodation recess 8b. When the key is removed here, the locking end 12c of the lock link 12 swings away from the slider 8. Therefore, the lock pin 15 is pushed outward by the urging force of the spring 16, and the lock pin 12 shown in FIG. Thus, the convex portion 15a is inserted into the storage portion 11. For this reason, the slider 8 is fixed at this position and cannot move, and FIG. 2 shows this state.

When the key is inserted in this state, the lock link 1 moves in the direction in which the lock end 12c pushes the lock pin 15.
Since 2 swings, the convex portion 15a is pushed out from the storage portion 11 and the state shown in FIG. 4A is restored, and the slider 8 becomes movable. Therefore, by rotating the key, the slider 8 can be moved downward, the lock shaft 7 can be retracted into the body 10, and the lock of the steering shaft can be released, as shown in FIGS. 3 and 4C.
As shown in FIG. 5, the released state is reliably held by the engagement of the engaging end 12c of the lock link 12 with the engaging groove 8a.

As described above, this embodiment has a structure in which the convex portion 15a of the lock pin 15 is inserted into the accommodating portion 11 at the lock position so that the slider 8 cannot be moved from this position. Therefore, the lock of the steering shaft cannot be released unless the key is inserted into the cylinder lock and the lock link 12 is swung to push the convex portion 15a of the lock pin 15 out of the storage portion 11. That is, if the cylinder lock is broken and the cam member 4 is rotated,
Even if the lid 9a of the lock spring 9 is destroyed, the lock cannot be released. Moreover, the slider 8 is incorporated in the body 10 and the lock pin 1
Since the structure of the portion 5 is invisible, there is no fear of touching this portion, and the antitheft function is fully exerted.

Although the lock shaft 7 is connected to the slider 8 in the embodiment, the present invention is provided with other structures such as the slider integrally formed with the lock shaft without being divided into two parts. It can also be implemented in a device.

[0015]

As is apparent from the above description, according to the present invention, a lock pin biased outward is provided on a side surface of a slider for moving a lock shaft, and a lock link is provided when a key is pulled out at a lock position. The lock pin is inserted into the storage part of the to prevent the slider from moving, and when the key is inserted, the lock pin is pushed out of the storage part by the lock link to the position where the slider can be moved. .

Therefore, since the slider itself is fixed while the steering shaft is locked, the possibility that the lock will be unlocked by an unauthorized act such as breaking the cylinder lock without using the key is significantly reduced. Moreover, the structure is relatively simple, and only a slight modification of the conventional structure is required, and the antitheft property can be improved without increasing the cost so much.

[Brief description of drawings]

FIG. 1 is a perspective view of a slider according to an embodiment of the present invention.

FIG. 2 is a schematic sectional view of the embodiment.

FIG. 3 is a schematic sectional view of the same embodiment.

FIG. 4 is an operation explanatory diagram of the embodiment.

FIG. 5 is a schematic cross-sectional view of a conventional example.

FIG. 6 is a schematic sectional view of the conventional example seen from another angle.

[Explanation of symbols]

 7 Lock Shaft 8 Slider 8b Lock Pin Receiving Concave 11 Storage 12 Lock Link 12c Locking End 15 Lock Pin 15a Convex 16 Spring

Claims (1)

[Claims] 1. A cam member that rotates in response to a key rotation operation moves a slider so that the lock shaft is projected and retracted toward the steering shaft side, and the lock shaft is projected toward the steering shaft side when the key is removed at the lock position. The steering shaft is locked with the lock shaft, and the tip of the lock link that swings according to the insertion / removal of the key is engaged with the side surface of the slider except at the lock position to prevent the lock shaft from protruding toward the steering shaft. In the steering lock device configured as described above, a lock pin that is biased outward is provided on the side surface of the slider, and the lock pin is inserted into the storage portion of the lock link when the key is pulled out at the lock position. Prevents the slider from moving and also prevents the slider from moving when a key is inserted. A steering lock device configured to be pushed out from a storage portion by a lock link to a position where a rider can move.