Patent ID: 8708409

Claim:
A vehicle seat comprising: a seat back frame including at least side portions located on both sides of the seat back frame and an upper portion disposed in an upper area of the seat back frame; a headrest disposed in the upper area of the seat back frame; a pressure receiving member that is linked to the seat back frame via a coupling member and that moves independently from the headrest; and an impact reduction member that is disposed in at least one of the side portions of the seat back frame, is linked to the pressure receiving member, and moves independently from the headrest under a predetermined impact load, wherein: the impact reduction member is linked to a biasing element that biases the pressure receiving member toward a front of the seat back frame via the coupling member; a momentum that restores the impact reduction member into an initial state is greatest during normal seating, and covers a range in which the momentum decreases when the impact reduction member rotates due to a rear-end collision; the impact reduction member includes a shaft that is rotatable; and a momentum generated by the biasing element that causes the impact reduction member to rotate is greatest during normal seating, and covers a range in which the momentum decreases when the impact reduction member rotates due to the rear-end collision.