Problem to be solved: to provide a walking assist device which can be used in accordance with the characteristics of the walking surface, which can be used easily and its auxiliary leg device.Solution: in the auxiliary leg device 31 which is mounted at the lower portion of the leg portion 15 of the walking assist device and is held movably in the axial direction and is urged in the projecting direction, an engaging groove 52 is formed in part of the auxiliary leg member 34 in the axial direction of the auxiliary leg member 34 to form an engaging groove .A locking member 35 for selectively interfering with the auxiliary leg member 34 is provided on the holder member 33 for holding the auxiliary leg member.The locking member 35 is engaged with the engaging groove 52 of the auxiliary leg member 34 in the most displaced position in one displacement posture to prevent the axial movement of the auxiliary leg member 34 in the axial direction, and in the other displacement attitude, the engaging portion 5 can be moved away from the engaging groove 52 to enable axial movement of the auxiliary leg member 34. 3 is formed.Diagram【課題】歩行面の性状に合わせて使いやすく使用態様を切り換えできる歩行補助器及びその補助脚装置を提供する。【解決手段】歩行補助器の脚部１５の下部に装着され、軸方向に移動可能に保持されるとともに突出方向に付勢された補助脚部材３４を有する補助脚装置３１において、補助脚部材３４の一部に、補助脚部材３４の軸方向に対して横切る係合溝５２を形成する。補助脚部材を保持するホルダ部材３３に、補助脚部材３４と選択的に干渉するロック部材３５を設ける。ロック部材３５には、一の変位姿勢において最も突出した状態の補助脚部材３４の係合溝５２に係合して補助脚部材３４の軸方向の移動を防止するとともに、他の変位姿勢において係合溝５２から離脱して補助脚部材３４の軸方向の移動を可能にする係合部５３を形成する。【選択図】図４
