Patent ID: 7520564

Claim:
A headrest for a vehicle seat, comprising: a stationary support part; and an impact element which can be moved relative to the stationary support part; an upper lever having first and second ends; a lower lever having first and second ends; a rotary joint interconnecting the first end of the upper lever to the impact element; a rotary joint interconnecting the second end of the upper lever to the stationary support part; a rotary joint interconnecting the second end of the lower lever to the stationary support part; and a bolt, located at the first end of the lower lever, that is displaceable in an elongated hole in the impact element to permit predetermined limited rotation of the impact element about the rotary joint interconnecting the first end of the upper lever to the stationary support part; wherein the upper and lower levers can be at least partially decoupled to permit different sequences of movement between the impact element and the support part during headrest movement for comfort and during headrest movement in the event of an accident.