To provide a standing-up assist mounting fixture capable of assisting standing-up motion by a force corresponding to motor ability or a posture of a user by a simple constitution.SOLUTION: A standing-up assist mounting fixture includes a mounting component 11 mounted on either of a thigh part and a cruris, and a linear or tabular spring mechanism 12 having one end side fixed on one side by the mounting component 11, and the other end side mounted on the other of the thigh part and the cruris, in which the mounting component 11 is provided with a spring support part 11f for supporting the spring mechanism 12 on a support point which is different according to curvature of the spring mechanism 12.SELECTED DRAWING: Figure 6【課題】簡素な構成で使用者の運動能力や姿勢に応じた力で立ち上がり動作を補助することができる立ち上がり補助装着具を提供する。【解決手段】上腿部または下腿部の一方に取付けられる取付部材１１と、一端側が取付部材１１に片持ち固定されるとともに他端側が上腿部または下腿部の他方に取付けられる線状または板状のバネ機構１２と、を備え、取付部材１１には、バネ機構１２の湾曲に伴って異なる支持点でバネ機構１２を支持するバネ支持部１１ｆが設けられている。【選択図】図６
