Patent ID: 8632128

Claim:
A vehicle seat comprising: a seat bottom movable forward and backward by a slide mechanism; a seatback installed to the seat bottom to be adjustable in tilt angle on a center shaft by a reclining mechanism; the reclining mechanism configured in a manner such that an arc gear is formed at the inner circumference of a perfectly circular ring member, a lock member having a lock gear unit is provided on the inside of the ring member, the lock member is locked and unlocked in and from the arc gear by a cam unit, and the cam unit is configured to be engaged with and disengaged from the arc gear by rotation of the center shaft disposed inside the ring member; and a rotatable arm that is installed to the center shaft and rotates by manipulation of a reclining lever or a walk-in lever so as to unlock the reclining mechanism, wherein the reclining lever rotates the rotatable arm by a link lever having a slot, the walk-in lever is configured to be able to manipulate the rotatable arm independently of the reclining lever, and the slide mechanism is unlocked to advance the whole seat, resulting in a walk-in state when the walk-in lever is manipulated in a manner of tilting the seatback forward.