Patent ID: 8388059

Claim:
An actuating system for a head restraint of a vehicle seat, at least part of which head restraint can be shifted from a comfort position into a safety position in the event of an accident, the system comprising: limbs which are expanded from an initial position as a consequence of pressure loading to bring about a lengthening which can be transmitted to the part via a force transmission means to shift the part from the comfort position to the safety position, wherein the limbs are connected to one another and/or to fastening elements by joints, each having a first joint pin and a second joint pin which can be inserted axially into holes to form the joints, wherein at least one first joint pin is longer than a corresponding second joint pin to facilitate insertion of the first joint pin into one of the holes in an adjacent limb, wherein the corresponding second joint pin is insertable into a first slot of an impact plate, and wherein a third joint pin is axially aligned with the first joint pin, and extends in an opposite axial direction relative to the first joint pin to facilitate insertion of the third joint pin into a second slot of the impact plate.