Patent ID: 7717011
Filing Date: 2010-05-18
Classification: B62D

Abstract:
1. A fixing device for a steering device, comprising: a fixed bracket comprising a fixed side part; a movable bracket comprising a movable side part; a lock bolt that passes through the fixed side part and the movable side part; a main drive cam, through which the lock bolt passes; a driven cam, through which the lock bolt passes, unrotatably fitted to the fixed bracket; and an operation lever that rotates the main drive cam, wherein a plurality of cam operation parts, each comprising a low surface, a slanting surface, a high level surface, and a cam projection, mutually of the same shape, are formed on the main drive cam and the driven cam respectively, wherein the main drive cam and the driven cam separate when the cam projection of the main drive cam reaches the high level surface of the driven cam, and the cam projection of the driven cam reaches the high level surface of the main drive cam, wherein the main drive cam approaches the driven cam when the cam projection of the main drive cam reaches the low level surface of the driven cam, and the cam projection of the driven cam reaches the low level surface of the main drive cam, wherein the cam projection of the main drive cam and the cam projection of the driven cam mutually maintain contact with at least one of the low level surface, the slanting surface, and the high level surface of the cam operation part thereof on an opposite side during rotation of the main drive cam, and wherein a diameter of the driven cam is greater than a diameter of the main drive cam.