Headrest

The restraint (10) has an adjusting part provided with drives e.g. spindle (14) and motor (15), where the drives are moved relative to a backrest by a support rod (12). One of the drives covers an adjust-rapid fixed driving device and a backrest-fixed driving device such as link body (16) and springs (22). The drives comprise an overload protection device (17) moved from a base position into a release position by exceeding maximum power that acts on the adjusting part. The drives are partly or completely released from acting on the adjustment part.