Patent ID: 8152240

Claim:
A vehicular seat device comprising: a seat cushion having a seat cushion frame; a seatback having a seatback frame and provided on a base member via a reclining mechanism so that an inclination angle of the seatback is adjustable; a first linking member whose first end is pivotably linked to the seat cushion frame and whose second end is pivotably linked to the base member; and a second linking member whose first end is pivotably linked to a portion of the seat cushion frame which is rearward of a linking position to the first linking member and whose second end is pivotably linked to a portion of the seatback frame which is upward of the reclining mechanism relative to a vehicle when the seatback is in an upright position, wherein seat arrangements of the vehicular seat device include a retracted state in which the seat cushion is moved forward downward relative to the vehicle and the seatback is superimposed on an upper side of the seat cushion when the seatback is tilted forward, and an entry/exit state in which the seat cushion is in a substantially vertical state producing a space for entry or exit rearward of the vehicular seat device when the seatback is tilted forward so as to be in a substantially upright position, and wherein the first linking member is detachably engageable with the base member, the vehicular seat device further comprising a lock member pivotably provided on the seat cushion frame; and a pin which is provided on the second linking member and is configured to engage the lock member, wherein the first linking member is detached from the base member and the lock member is engaged with the pin when the seat arrangement is the entry/exit state.