Patent ID: 9403458
Filing Date: 2016-08-02
CPC Classification: B60N

Claim Text:
1. A headrest moving device comprising: a cover including a front wall and a rear wall; a middle cover disposed inside the cover and formed with a hollow portion; a locking cover inserted into the hollow portion, connected to the cover, and formed with teeth along a forward/backward direction thereof, wherein the middle cover is provided with a ball bearing such that the ball bearing encloses the locking cover; a lock pin plate installed on the middle cover to be slidable in a leftward/rightward direction and provided with a lock pin inserted into the teeth; a lock plate formed with through-holes through which vertical portions of a stay rod pass, the lock plate being installed on the middle cover to be slidable in the leftward/rightward direction and being connected to the lock pin plate; a return spring configured to return the lock plate or the lock pin plate to original position where a vertical position of the headrest is locked or a forward/backward position of the headrest is locked; and a button configured to move the lock plate in the leftward/rightward direction, wherein the cover includes a front cover and a rear cover disposed at a rear side of the front cover and the front cover is fixed to the rear cover so that the spacing between the front wall and the rear wall may be maintained constantly.