[Problem] I to provide a braking device that suppresses the generation of the load at the time of braking operation. A brake device 140, the circular outer peripheral portion which is arranged concentrically relative to the wheel 131, and includes a plurality of engagement teeth 141a projecting radially from the outer circumference, the rotation for rotating the wheel 131 Synchronization and member 141, and an engaging member 142 which is held movably on the frame 133 of the wheelchair 100, to engage the teeth 141a and fits into the groove 141b between the plurality of engagement teeth 141a of the rotational member 141 and a engaging projection 142a, a first position where the engaging projection 142a is located outside of the groove 141b, and a second position where at least a portion of the engagement projection 142a is positioned in the trench 141b lock for maintaining the engagement member 142, a biasing member 146 biasing the engaging member 142 to one of the first position or the second position, the engagement member 142 to the other of the first position or the second position which is displaced It includes a section 145,BACKGROUND 10【課題】ブレーキ動作時に荷重の発生を抑えたブレーキ装置を提供する。【解決手段】ブレーキ装置140は、車輪131に対して同心円状に配置された円形の外周部、及び、外周部から放射状に突出する複数の係合歯141aを備え、車輪131と同期回転する回転部材141と、車椅子100のフレーム部133に可動式に保持された係合部材142であって、回転部材141の複数の係合歯141a間の溝141bに収まって係合歯141aと係合する係合凸部142aを備え、係合凸部142aが溝141bの外部に位置する第1位置と、係合凸部142aの少なくとも一部が溝141bの内部に位置する第2位置との間を変位する係合部材142と、係合部材142を第1位置又は第2位置の一方に付勢する付勢部材146と、係合部材142を第1位置又は第2位置の他方に維持するロック部145と、を備える。【選択図】図10
