Patent ID: 8079239

Claim:
A key interlock device for preventing removal of an ignition key of a vehicle, comprising: a body; a camshaft rotatably provided in the body and connected to an ignition key manipulation unit, wherein the camshaft is rotated by manipulation of the ignition key in the ignition key manipulation unit; and at least one anti-rotation member coupled to the camshaft in the camshaft and elastically biased toward a center of the camshaft; wherein an end portion of the at least one anti-rotation member is engaged with the body when the camshaft rotates by manipulation of the ignition key beyond a predetermined speed in one direction so as to restrict rotation of the camshaft, and wherein the end portion of the at least one anti-rotation member is disengaged with the body when the camshaft rotates in a reverse direction or rotates below the predetermined speed by manipulation of the ignition key.