Headrest device for a vehicle seat

摘要

A headrest device for use with a seat in a vehicle such as an automobile is disclosed. In the headrest device, one of a headrest stay and a guide member into which the headrest stay is inserted is fixed to a headrest body, the other is fixed to a back frame of a seat back, a holder is slidably inserted between the headrest stay and guide member, the headrest stay is formed with a plurality of notches disposed axially at required intervals to allow the headrest body to be prevented against its downward movement relative to the seat back and is also provided with two stoppers respectively in the upper and lower portions thereof, the guide member and holder are respectively formed slits for insertion of a lock spring supported by the guide member and engageable with the notches in the headrest stay, and a cutaway portion for engaging and disengaging the lock spring is formed so as to continue from one of the slits, whereby the height of the headrest body can be adjusted by means of direct operation of the headrest body.