PROBLEM TO BE SOLVED: To provide a device which performs torque measurement by operation of a hand rim on the occasion of making a wheelchair run, by utilizing a wheelchair used daily.SOLUTION: A device includes strain sensors which detect strains of at least three support plates provided on the lateral side of a ring-shaped hand rim which are made contact at their one ends with the inner circumferential side of the rim of a rear wheel of a self-propelled wheelchair and are disposed parallel and coaxially with the wheel, and a transmitter which transmits an output signal of the strain sensor to a computer terminal. In order to obtain a shear strain of the support plate for installing the hand rim of the wheelchair on the wheel, a strain gage of an orthogonal biaxial type is used. Wheatstone bridge circuits are made in portions of the individual support plates, and the individual bridges are connected in parallel with each other and led to one strain amplifier for signal amplification, so as to detect the shear strain caused by the physical strength operating the hand rim.COPYRIGHT: (C)2013,JPO&INPIT【課題】日常使用する車椅子を利用して、車椅子を走行する際のハンドリムの操作によるトルク計測を行う装置を提供する。【解決手段】自走式車椅子の後方車輪のリムの内周側に一端が当接され、車輪に対して平行かつ同軸に配置される環状のハンドリムの側面に設けられた少なくとも3つの支持板の歪みを検知する歪みセンサと、歪みセンサの出力信号をコンピュータ端末に送信するトランスミッタとを備える。車椅子のハンドリムを車輪に取り付ける支持板のせん断歪みを得るため、直交2軸型の歪みゲージを用いる。各々の支持板の部分でホイートストンブリッジ回路を組み、各々のブリッジを並列接続して1台の歪みアンプに導いて信号増幅し、ハンドリムを操作する腕力によるせん断歪みを検出する。【選択図】図7
