Patent ID: 9126513
Filing Date: 2015-09-08
Classification: B60N,Y10T

Abstract:
1. A headrest moving device, comprising: a press member; a moving unit moved horizontally by the press member; a return spring for returning the moving unit; a screw; a block having a through hole through which the screw passes; a locking unit for releasing the block from a locked state in response to a movement of the moving unit; a frame installed on a stay rod and supporting the moving unit, wherein either one of the screw and the block is rotated, wherein threads are formed in the block so that the block can be engaged with the screw through a screw type engagement, or a ball is placed between the screw and the block; and wherein teeth are formed around an outer circumferential surface of the block, a block seat is formed in the locking unit so as to seat the block therein, teeth are formed in the locking unit in such a way that the teeth of the locking unit are arranged in the block seat, a main protrusion having both a flat surface and an inclined surface is formed in the moving unit, and an insert opening is formed in the locking unit so as to receive the main protrusion therein so that, when the moving unit moves horizontally, the locking unit can move upward or downward.