Patent ID: 7762110
Filing Date: 2010-07-27
Classification: B60R,Y10T

Abstract:
1. A steering lock unit comprising a lock member which holds and releases engagement with a movable member interlocked with operation of a steering wheel so that the movable member is locked and unlocked, an actuator driven by electric power supplied from a battery mounted on a vehicle, and a transmission mechanism which transmits a power of the actuator to the lock member, wherein the transmission mechanism comprises: a shaft member which is adapted to rotate in response to the operation of the actuator; and a cam member which engages with the shaft member and transmits the operation of the actuator to the lock member, the cam member having a through hole and being a substantially cylindrical member which engages with the lock member, wherein the cam member is formed with an internal thread on an inner surface of the through hole, and the shaft member has an external thread corresponding to the internal thread of the cam member so that the cam member and the shaft member are engaged with each other and assembled, wherein when releasing the engagement of the lock member with the movable member, the shaft member and the cam member integrally rotate in a normal state, while the cam member moves in an axial direction with respect to the shaft member in a case in which a pull-out force of the lock member greater than a predetermined quantity is necessary.