Abstract: A lumber support apparatus may include a base plate installed in a fixed wire installed in seatback frame to be elevated, nut units having left and right nuts coupled to upper portions of opposite sides of the base plate to be slid leftwards and rightwards, respectively, link units having left and right links located outside the nut units to be spaced apart from each other and ends of which are hinge-coupled to upper portions of opposite sides of the base plate, respectively, arm units having left and right arms leftward/rightward movements of which are restricted by the link units and raised forwards and rearwards when the nut units are slid, and a screw rod having a screw structure passing the left and right nuts leftwards and rightwards to be screw-coupled to the left nut and right units, for moving the left and right nuts in opposite directions during rotation thereof.

Abstract: A lumber support apparatus may include a base plate installed in a fixed wire installed in seatback frame to be elevated, nut units having left and right nuts coupled to upper portions of opposite sides of the base plate to be slid leftwards and rightwards, respectively, link units having left and right links located outside the nut units to be spaced apart from each other and ends of which are hinge-coupled to upper portions of opposite sides of the base plate, respectively, arm units having left and right arms leftward/rightward movements of which are restricted by the link units and raised forwards and rearwards when the nut units are slid, and a screw rod having a screw structure passing the left and right nuts leftwards and rightwards to be screw-coupled to the left nut and right units, for moving the left and right nuts in opposite directions during rotation thereof.

Abstract: The present invention relates to a manipulation button 40 for adjusting the height of a cushion seat for a vehicle that is capable of absorbing the shocks applied to a driver sitting on the cushion seat while the vehicle is being driven on a relatively rough road, and more particularly, to a button for adjusting the height of a cushion seat for a vehicle that is capable of adjusting the height of the cushion seat according to a driver's physical conditions and his desired driving posture, wherein a plurality of pneumatic valves having flow channels formed therein are intensively configured with one another in such a manner as to be operated by means of the seesaw type button 41, thereby effectively performing the ascending and descending motions of the cushion seat in a simple manner.