Patent ID: 7195313
Filing Date: 2007-03-27
Classification: B60N

Abstract:
1. A headrest for a vehicle seat, wherein the headrest is for operating during at least both a crash and period of normal use that does not include a crash, the headrest comprising: at least one four-bar linkage, wherein the four-bar linkage includes an energy storage device for driving the four-bar linkage in response to the crash and thereby changing the four-bar linkage's configuration in a first predetermined manner, so that the impact element moves forwardly away from the support from an initial position to a crash position, wherein the upper and lower linkages pivot relative to both the support and the impact element while the impact element moves forwardly away from the support; a lock for restricting rearward movement of the impact element while the impact element is in the crash position; a drive operative for at least indirectly bringing the headrest from the initial position to at least one other comfort position during the period of normal use; a guide tappet, wherein a transverse link that bears upon the four-bar linkage, wherein the guide tappet includes a section for bearing against the transverse link in a manner that at least indirectly causes the changing of the four-bar linkage's configuration in the second predetermined manner during the moving of the guide tappet.