Patent ID: 7299669

Claim:
A steering column locking device using a smart key and having a key knob rotation restricting function and a key interlock function, comprising: a housing provided at a stationary position; a key knob that is user-operable for a starting manipulation, protruding from the housing; a plunger disposed in the housing and coupled to the key knob, so that, when the starting manipulation is conducted, the plunger moves in an axial direction and rotates in a circumferential direction; a cam shaft coupled to the plunger; a return spring provided between the plunger and the cam shaft to bias the plunger towards the key knob; a stroke restrictor that restricts movement of the plunger in the axial direction; and a push release functioning mechanism that mechanically prevents the plunger from being rotated from an accessory position to a lock position when the key interlock function fails.