Patent ID: 7429082
Filing Date: 2008-09-30
Classification: B60N

Abstract:
1. A headrest for a vehicle seat, the headrest comprising: an impact cushion attached to the vehicle seat; a pivotal axle extending transversely to a direction of travel of the vehicle, the pivotal axle enabling a rotation against an action of a spring of the headrest into a used or an unused, lockable position, at least a portion of the pivotal axle secured against rotation of itself in relation to the vehicle seat, a toggle linkage installed in the impact cushion, the toggle linkage assembled from a plurality of pivotal lever arms bound together by a knee joint in a plane extending transversely to the pivotal axle, a distanced first end of the toggle linkage disposed radially in relation to the pivotal axle and turnably carried on a lever arm axle stationary in respect to the impact cushion, and a positioning element placed in the impact cushion for the locking of the used position of the headrest, wherein the toggle linkage maintains in the used position a torque restriction between the impact cushion and the pivotal axle, whereby the location of the lever arms are fixed in relation to one another.