Patent ID: 7686398

Claim:
A seat apparatus for a vehicle, comprising a slide lock mechanism that locks and unlocks a relative movement between a lower rail adapted to be mounted on a vehicle to extend in a longitudinal direction of the vehicle and an upper rail slidably mounted on the lower rail; a first engagement member provided at a lower end portion of an upper arm pivotably supported by a first end portion of a lower arm operatively connected to the upper rail to slide in association with the upper rail, the lower arm supporting a seat cushion; a second engagement member supported by the lower arm to be pivotably moved between a first position at which the first engagement member and the second engagement member are engaged with each other and a second position at which the second engagement member is separated from the first engagement member, the second engagement member biased by a biasing mechanism in a direction from the first position to the second position, the second engagement member including an engagement portion at a first end, the engagement portion of the second engagement member moving to a path of the first engagement member when the second engagement member is located at the first position and retracting from the path of the first engagement member when the second engagement member is moved to the second position, the second engagement member pivotally moved to the first position in association with a first pivot operation performed by a first operational member for pivotally moving the upper arm from a first pivot position to a second pivot position and retaining the upper arm at the second pivot position by an engagement between the engagement portion and the first engagement member, the second engagement member biased to return to the second position after a completion of the first pivot operation; a tilting mechanism releasing a lock of a reclining mechanism for adjusting a position of the upper arm in association with a second pivot operation performed by a second operational member for pivotally moving the upper arm to a third pivot position; and a retaining mechanism provided at the second engagement member for retaining the second engagement member at the first position against a biasing force of the biasing mechanism.