Head Rest Control Device and Active Head Rest

摘要

It is an object of this invention to provide an active headrest which will not over-push the head of a passenger. For this purpose, the invention provides a headrest controller for moving a part ( 20 A) or whole of a headrest ( 20 ) of a vehicle seat toward a head of the passenger to reduce the distance between the headrest ( 20 ) and the head in the horizontal direction by predicting or detecting a crash to the rear of the vehicle, including a head position detecting unit ( 11 ) for detecting a predetermined state of approach or state of contact of the headrest ( 20 ) to or with the head during the movement of the headrest ( 20 ) and a control circuit for stopping the headrest based on a detection signal from the head position detecting unit ( 11 ).