PROBLEM TO BE SOLVED: To provide a highly versatile stand-up assistant device for a chair, capable of assisting a seated person in standing up without complicating the structure.SOLUTION: A seat part 4 includes: a fixed part 4A coupled to a pedestal 2 via a hinge 3 fixed to the front end of the pedestal 2 and a movable part 4B supported to the fixed part 4A via a sliding mechanism 5 in such a way as movable in a direction orthogonally crossing the axis of the hinge 3. The stand-up assistant device further includes: a main damper means 11 whose proximal end is rotatably connected to the pedestal 2 and whose distal end is rotatably connected to the movable part 4B of the seat part respectively for cushioning the impact applied to the seat part 4 and an auxiliary spring 12 provided between the fixed part 4A and the movable part 4B for energizing the distal end of the movable part 4B toward the fixed part 4A in a direction of approaching the hinge 3. The main damper means 11 has both energizing function and cushioning function.COPYRIGHT: (C)2013,JPO&INPIT【課題】構造を複雑にすることなく着座者の立ち上がり動作(起立動作)を補助でき、汎用性が高い腰掛の起立補助装置を提供する。【解決手段】着座部4は、台座2の前端部に固定されたヒンジ3を介して台座2に連結される固定部4Aと、この固定部4Aにスライド機構5を介して、ヒンジ3の軸線と直交する方向に移動可能に支持される可動部4Bとを有する。台座2に基端部が、着座部4の可動部4Bに先端部が回転可能にそれぞれ連結され着座部4が受ける衝撃を緩衝する主ダンパー手段11と、固定部4Aと可動部4Bとの間に設けられ可動部4Bの先端を固定部4Aに対しヒンジ3に近づく方向に付勢する補助バネ12とを備える。主ダンパー手段11は付勢作用と緩衝作用とを併せ持つ。【選択図】 図1
