PROBLEM TO BE SOLVED: To enable a user to easily open his/her legs apart, in a walking assistance device having an ankle joint limited in a swingable range in a rolling direction.SOLUTION: This walking assistance device includes a seating member 1, a pair of leg links 2 and 2 which support the seating member 1 from below, and ground contact members 8 connected to respective leg links 2 through ankle joints 7. The ankle joint 7 has a coupling mechanism 100 which includes a joint shaft member 106 and a retaining portion which retains the joint shaft member 106 swingably in a rolling direction in a predetermined range &phiv. The joint shaft member 106 is inclined to an abducting side in the rolling direction from the middle position in the predetermined range &phiv in which the joint shaft member is swingable in the rolling direction when the walking assistance device is in an upright state.COPYRIGHT: (C)2010,JPO&INPIT【課題】 ロール方向に揺動範囲の制限を有する足首関節部を備えた歩行補助装置において、利用者が足を開脚し易くする。【解決手段】 歩行補助装置は、着座部材1と、着座部材1を下方から支える一対の脚リンク2,2と、各脚リンク2に足首関節部7を介して連結される接地部材8とを備える。足首関節部7は、ジョイント軸部材106と、ジョイント軸部材106をロール方向に所定範囲φで揺動自在に保持する保持部とからなる継手機構100を備える。ジョイント軸部材106は、直立状態のときに、ロール方向に揺動可能な所定範囲φの中央位置よりもロール方向の外転側に傾いている。【選択図】 図3
