PROBLEM TO BE SOLVED: To provide a support structure of a rotary step of a wheelchair, and a method for regulating the rotation torque of the step.SOLUTION: A torque regulating part made of an elastic material is disposed in a pivotally attached part of the step, and a partially notched fitting hole having a curved pressure contact surface is formed in the torque regulating part. A support rod is inserted into the partially notched fitting hole, and a projecting piece is made to project from the periphery of a notched part of the partially notched fitting hole. A male screw is disposed in the projecting piece, and the partially notched fitting hole is contracted or expanded by advancing/retracting the male screw to increase/reduce the rotation torque when the step is rotated.COPYRIGHT: (C)2011,JPO&INPIT【課題】車椅子用回動式ステップの支持構造、及び該ステップの回転トルク調節方法を提供する。【解決手段】ステップの枢着部に、弾性材料からなるトルク調節部を設け、該トルク調節部に、湾曲圧接面を有する一部切欠嵌合孔を形成し、該一部切欠嵌合孔に支持杆を挿通させ、さらに該一部切欠嵌合孔の切欠部分周辺から突出片部を突出させ、該突出片部に雄ねじを配設し、該雄ねじを進退させて一部切欠嵌合孔を縮径又は拡径してステップ回動時の回転トルクを増減させるようにした。【選択図】図4
