PROBLEM TO BE SOLVED: To provide a muscle strength auxiliary apparatus which can be used for an operation of moving an arm up and down.SOLUTION: A muscle strength auxiliary device 100 includes: a body fixing part 3 mounted on the body of an operator 1 an arm support member 2 configured to support the arm of the operator 1 from the lower part a connection mechanism 10 disposed at the body fixing part 3 a connection member 4 configured to connect the arm support member 2 to the connection mechanism 10. The connection mechanism 10 includes: a case 11 connected to the body fixing part a spiral spring 12 whose edge part 12a is fixed to a fixing shaft 11a of the case 11 a cover 13 fixed to the case 11 a rotary shaft 14 supported by a bearing part 11b of the case 11 and a bearing part 13a of the cover 13 so as to be freely rotatable, and fixed to an edge part 12b of the spiral spring 12 a pinion 15 fixed to the rotary shaft 14 a slide mechanism 17 fixed to the cover 13 and a rack engaged with the pinion 15, and fixed to a movable part 17b of the slide mechanism 17, to which the connection member 4 is connected.COPYRIGHT: (C)2013,JPO&INPIT【課題】腕を上下動させる作業にも用いることが可能な筋力補助装置を得る。【解決手段】筋力補助装置100は、作業者1の胴体に装着される胴体固定部3と、作業者1の腕を下方から支持する腕受部材2と、胴体固定部3に設けられた連結機構10と、腕受部材2と連結機構10とを接続する連結部材4と、を備える。連結機構10は、胴体固定部に接続されたケース11と、端部12aがケース11の固定軸11aに固定されたぜんまいバネ12と、ケース11に固定されたカバー13と、ケース11の軸受部11bとカバー13の軸受部13aに回転自在に支持され、ぜんまいバネ12の端部12bに固定された回転軸14と、回転軸14に固定されたピニオン15と、カバー13に固定されたスライド機構17と、ピニオン15に噛み合ってスライド機構17の可動部17bに固定され、連結部材4が接続されたラックと、を備える。【選択図】図3
