Development of Legless chair with Power Assist for Effort in Standing Action

开发具有站立动作用力辅助功能的无腿椅子

• 批准号: 13650247
• 负责人: KOIZUMI Kunio
• 金额: $ 1.09万
• 依托单位: TOYAMA University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13650247/
• 关键词: welfare engineering; welfare for old people; staying home care; assistance; power assist; rehabilitation

This study deals with the new power assist for standing action, suspends the largest load to the leg in the anti-gravity action, of the old people who the leg function declines. In the case of seating in the floor, the very large load acts to the leg for lining of the waist height level from the floor to the chair. Therefore, the physical burden in Japanese daily life is bigger than the life with chair and bed in Europe and America. Thoughtless utilization of the machine power in the reduction method of the load causes the physical weakness of the leg. As the technical countermeasure in hardware against the difficult problem, the stand assist mechanism for the legless chair was developed to improvement for the natural and easy standing action. In standing action, there is the difficulty of standing in the wide bending of leg joints with transfer of the center of gravity in body weight in lifting of the waist height level from the floor to the chair. The functions of developed mechanism have lifting of the waist height level as the main mechanism action at the low level, and have the bending and extrusion of the body to the front over the height level equal to the chair. The mechanism can be adjusted the seat motion to fit for the individual specificity and the secular change with the only one actuator. And, as the countermeasure in software, the assist algorithm to evaluate the self-help effort for standing was developed to maintain the physical ability remained and rehabilitated.(1) The power assisted legless chair was developed to follow until self-standing from seating in the floor.(2) The forces at all joints were analyzed and the required power for the actuator were clarified.(3) The prototype of the power assist algorithm was developed.(4) Self- standing power is appropriate as the index of evaluation to effort.(5) The force acted at elbow hang was clarified to be appropriate as the approximate index.

这项研究涉及实施行动的新电力辅助，暂停了反重力行动中最大的负担，腿部功能下降的老年人。如果座位在地板上，很大的负载可用于从地板到椅子的腰部高度的衬里。因此，日本日常生活的身体负担比欧洲和美国的椅子和床的生活更大。在负载减少方法中，机器功率无意识地利用会导致腿的物理弱点。随着硬件与困难问题的技术对策，开发了无腿椅子的支架辅助机制，以改善自然而易于执行的行动。在常规行动中，很难站在腿部关节宽弯道中，重力中心在体重中转移到腰部高度从地板到椅子上的提升。开发机制的功能将腰高度的提升作为低水平的主要机制作用，并且在高度水平等于椅子上的弯曲和挤出到前部的弯曲和挤出。可以将机制调节座椅运动，以适合单个特异性，并使用唯一一个执行器的世俗变化。而且，作为软件的对策，开发了辅助算法来评估自助站立的努力，以保持身体能力保持和康复。（1）开发了功率辅助的无腿椅，直到坐在地板上坐下。功率是适当的，因为评估指数对努力。（5）在肘部悬挂下作用的力被澄清为合适的近似指数。