Patent ID: 8857910

Claim:
An apparatus for moving a headrest, comprising: a stay rod; a fixing cam fixed to the stay rod, with a locking protrusion provided on the fixing cam; a rotating cam rotatably provided on the fixing cam, the rotating cam having an insert depression into which the locking protrusion is inserted; a support spring applying elastic force to the rotating cam so that the rotating cam is biased to the fixing cam; and a return spring having a first end fixed in place, and a second end connected to the rotating cam, wherein the fixing cam comprises a spring support supporting one end of the support spring, and the spring support comprises a snap ring, and an insert groove is formed in the fixing cam so that the spring support is fitted into the insert groove, and wherein the rotating cam has a through hole therein, the through hole having a diameter greater than a diameter of the stay rod so that the rotating cam can be provided around the stay rod after passing through one end of the stay rod and a bent portion of the stay rod.