Height control unit of a headrest for a vehicle seat

Abstract

The present invention relates to a height control unit of a headrest for a vehicle seat, in which the height of the headrest may be simply controlled by the driving force of an electric motor. The height control unit of a headrest for a seat of a vehicle includes a bracket fixed to an inner frame of a seat back, a motor fixed on a side of the bracket, a lead screw axially supported at a lower end by a stopper plate so as to be driven forward or backward towards a lower part of the bracket via a reduction gear box by the motor, lifting rods standing on both sides between the bracket and the stopper plate, and a carrier screw-coupled with the lead screw to be lifted or lowered by the guide of the lifting rods and having pockets opened upward at both sides so as to receive poles of the headrest.

Dependencies are inferred from the claim text.