PROBLEM TO BE SOLVED: To reduce the burden on a knee joint electric motor, and prevent loss of natural walking feeling due to increase in inertial mass of a knee part of a user.SOLUTION: On a waist part member, a hip joint electric motor 110 and the knee joint electric motor 120 are coaxially disposed. A thigh support member 20 is fixed and connected to an output member 116 of the hip joint electric motor 110. An output member 126 of the knee joint electric motor 120 and a lower leg support member 40 are drive-connected to each other by a link type transmission mechanism 90. Power generated by the knee joint electric motor 120 is transmitted by the transmission mechanism 90 to the lower leg support member 40.COPYRIGHT: (C)2010,JPO&INPIT【課題】膝関節用電動モータの負担を軽減し、併せて使用者の膝部の慣性質量の増加によって自然な歩行感が損なわれることを回避すること。【解決手段】腰部装具に、股間関節用電動モータ110と膝関節用電動モータ120とを同軸配置し、股間関節用電動モータ110の出力部材116に大腿部装着具20を固定連結し、膝関節用電動モータ120の出力部材126と下腿部装着具40とをリンク式の伝動機構90によって駆動連結し、膝関節用電動モータ120が発生する動力を伝動機構90によって下腿部装着具40に伝達する。【選択図】図1