PROBLEM TO BE SOLVED: To provide a low-manufacturing cost chair seat surface with a standing-up auxiliary function which can be easily added to an existing chair or wheelchair, whose seating height that affects a use feeling when added does not change greatly, which a care giver can operate in a posture that can easily secure the safety of a care receiver, and which can impart seat surface lifting power necessary and sufficient for standing-up.SOLUTION: In a chair seat surface with a standing-up auxiliary function in which a seat surface is lifted and tilted by the cooperation of a gas spring and a torsion spring, appropriate seat surface lifting power when a user stands up can be acquired by adjusting the position of the torsion spring.COPYRIGHT: (C)2014,JPO&INPIT【課題】 製造コストが安く、既存の椅子や車椅子に容易に付加することができ、付加した際に使用感を左右する着座高さが大きく変化せず、介護者が被介護者の安全を容易に確保できる体勢で操作でき、立ち上がりに必要かつ十分な座面持上げ力を付与できる、起立補助椅子座面を提供する。【解決手段】 ガススプリングとねじりばねが共同して座面を持ち上げて傾斜させる起立補助椅子座面において、ねじりばねの位置を調節することで、利用者が起立する際の適切な座面持上げ力が得られるようにする。【選択図】図1
