Patent ID: 7614693

Claim:
A seating area adjuster for a seat of a vehicle, comprising: a seating member having a seating surface; a support portion supporting the seating member; an adjustment mechanism connected with the seating member and supported by the support portion, the adjustment mechanism including a circular arc portion, an extension portion, an opening portion, and an end wall being disposed within the opening portion and in contact with the circular arc portion and configured to be movable in an adjustment direction in which a length of the seating surface is adjusted and a guide bracket fixed on the seating member and having a flat surface portion extending in a substantially vertical direction, the adjustment mechanism rotating the seating member about a rotation shaft extending perpendicular to the adjustment direction of the adjustment mechanism and being supported at the end wall; a movement mechanism configured to move the end wall of the adjustment mechanism in the adjustment direction relative to the support portion, the movement mechanism including an elongated rod slidably supported at the support portion, an arm being fixed at a front side of the rod and extending in a downward direction, the arm rotatably supporting the rotation shaft at an under side of the arm; a motor, a screw rotating in response to an operation of the motor, an operation arm fixed at the screw being connected to the rod; and a rotation control mechanism controlling the end wall of the adjustment mechanism to a predetermined rotational position corresponding to an amount of a movement of the end wall of the adjustment mechanism in the adjustment direction with a rotation center on the rotation shaft; wherein the rotation control mechanism includes a guide shaft attached to the end wall, provided parallel to the rotation shaft, and placed apart from the rotation shaft, and a guide hole formed at the flat surface portion of the guide bracket, the guide shaft being slidably engaged with the guide hole.