To provide a back/forth tilt type headrest which attains an angle adjustment and provides a restrictive structure with respect to angle adjustment and rearward load weight.
The headrest for vehicles has: a stationary plate secured to a seat back of a vehicle; an attachment shaft supported by the stationary plate; a coil spring having a fixed end and a free end with its inner diameter of a winding diameter wound on the attachment shaft smaller than the outer diameter of the attachment shaft; and a headrest base plate attached to the stationary plate so as to turn forward and rearward. The fixed end of the coil spring is set to the base plate so as to secure the attachment shaft to the base plate or the fixed end of the coil is set to the stationary plate so as to integrate the attachment shaft with the base plate, and the winding direction of the coil spring is set to a direction in which the spring is tightened when the base plate is turned rearward, thus restricting the rearward turning.
KOBAYASHI TOKUZO
OKAMOTO AKIHIKO
Hidetoshi Kasahara