Patent ID: 8246112

Claim:
A vehicle seat having a mechanism for moving a headrest upon rear-end collision, comprising: a pressure receiving part for receiving a load of a rearward movement of an occupant; a transmitting element for transmitting the load received by the pressure receiving part to a headrest side; and a blocking element for blocking the load received by the pressure receiving part from being transmitted to the transmitting element, until the load reaches a predetermined level; wherein: the transmitting element comprises: a lower link rotatable mounted to a lower portion of a seat-back frame of the vehicle seat and connected to the pressure receiving part; an upper link connected to the headrest to allow for a rotation thereof; and a connecting link for connecting the lower link and the upper link to each other, and configured to operate in an interlocking manner with a rotation of the lower link; and the blocking element is held by one of the lower link and the connecting link, and is configured to urge the lower link and the connecting link in a separating direction.