Steering wheel lock device

Abstract

The invention provides a steering wheel lock device for reliably preventing undesirable automatic recovery, comprising: a cylinder component (23) contained in a steering wheel lock body (10); a cam element (33) rotating together with the cylinder component; a lock bolt (47) which passes in and out to lock a steering shaft when the cam component is at a LOCK position, and draws back towards a releasing position when the cam component is at ACC position, ON position and START position on the other hard; and a switch component (ignition switch (55)) coupled and rotated with the cam component. A first cam surface (41) which extends from LOCK position to ACC position and makes the lock bolt act towards the withdrawing direction, a second cam surface (42) extending from ACC position to ON position of the cam component, and a third cam surface (43) extending from ON position to START position of the cam component are mounted on the cam component, characterized in that, semidiameter of the third cam surface (r3) is smaller than semidiameters (r1, r2) of the first and the second cam surfaces.

Description

technical field [0001] The present invention relates to a steering wheel lock device for locking a steering wheel of an automobile or the like for the purpose of preventing theft. Background technique [0002] This steering wheel lock device sets the LOCK position for locking the steering wheel after the engine stops, the ACC position for actuating only a part of the load components such as the audio, the ON position for actuating all load components, and the START position for starting the engine. And, if it is configured that the key is inserted into the cylindrical part to make it turn from the LOCK position to the START position through the ACC position and the ON position, the hand is removed, and then the key and the cylindrical part automatically return to the ON position. And, the returning force for automatically restoring the cylinder member is provided by a return spring provided inside the ignition switch. [0003] The steering lock device is disposed on a steer...

AI Technical Summary

Problems solved by technology

[0006] However, in this steering wheel lock device, since the cam member that rotates together with the cylindrical member is provided, and the lock bolt is actuated by the cam member, there is a possibility that the sliding resistance between the cam member and the lock bolt hinders the automatic restoration. question

In addition, since the lock bolt is biased toward the locked position by the spring, the sliding resistance further increases due to the biasing force, which becomes the main cause of poor self-returning.

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