PROBLEM TO BE SOLVED: To provide a walking assistance device in which a torque transmitting member having a leg member can be easily attached to and detached from a power generator.SOLUTION: One end (4A) of a rectangular-board-shaped torque transmitting member (4) having a locking hole (31) made by penetration is inserted into a receiving portion (24) which is a slot-shaped space in a power generator (3) a button (27) which is an engaging element is put into the locking hole (31) and a through-hole (26) of the power generator (3) and the torque transmitting member (4) is connected with the power generator (3) through torque-communicating relationship. The button (27) is biased in a direction where it is put into the through-hole (26) by a spring (28), and the button (27) can be put thereto to connect the torque transmitting member (4) with the power generator (3) or to release the connection.COPYRIGHT: (C)2010,JPO&INPIT【課題】脚部部材が取り付けられたトルク伝達部材を動力発生装置に容易に着脱することができる歩行補助装置を提供する。【解決手段】貫通形成された係止孔(31)を有する矩形板状のトルク伝達部材(4)の一端部(4A)を、動力発生装置(3)のスロット状空間の受入部(24)に差し込み、係止孔(31)と動力発生装置(3)の貫通孔(26)とに係合子であるボタン(27)を嵌合させ、トルク伝達部材(4)を動力発生装置(3)にトルク伝達関係で連結する。ボタン(27)は、ばね(28)により貫通孔(26)に嵌合する方向に付勢されており、ボタン(27)を押し込むことにより、トルク伝達部材(4)を動力発生装置(3)に連結させ、または連結を解除させることができる。【選択図】図4