PROBLEM TO BE SOLVED: To improve operability in mounting an exercise assist device so that a user can easily mount the exercise assist device without needing help from other people even when the user is not a healthy person.SOLUTION: Right and left belt side connectors are attached to a flexible waist part belt 12 that is detachably mounted on a waist part so as to surround the waist part of a user, and right and left frame side connectors 52 and 54 that disengageably engage with the belt side connectors are attached to a non-flexible frame 50 that is provided with right and left rotation force generation devices 56 and 58, etc. and extends through the front side of the waist part of the user. The frame 50 is separable with respect to the waist part belt 12.COPYRIGHT: (C)2016,JPO&INPIT【課題】運動補助装置の装着の操作性を改善し、健常者でない場合も、運動補助装置を他の人の助けを要することなく容易に装着できるようにする。【解決手段】使用者の腰部を取り囲んで腰部に着脱自在に装着される可撓性の腰部ベルト12に左右のベルト側連結具を取り付け、左右の回転力発生装置56、58等を取り付けられて使用者の腰部の前側を通って延在する非可撓性のフレーム50にはベルト側連結具に係脱可能に係合する左右のフレーム側連結具52、54を取り付け、腰部ベルト12に対してフレーム50を分離可能な構成にする。【選択図】図1