PROBLEM TO BE SOLVED: To provide a wheel chair in which front wheels at the footing do not move inadvertently when sitting on the wheel chair, large-diameter tires of rear wheels are less likely to be damaged, a lock and unlock operation mechanism of the wheels is simple, and maintenance is easy.SOLUTION: A wheel chair 1 comprises a pair of large-diameter rear wheels 2 and a pair of front wheels of double-wheel casters 3. The front wheels of the double-wheel casters are provided with lock mechanisms 4 for locking and unlocking the double-wheel casters. In a grip part 124 located at the rear part of the wheel chair, a lock and unlock operation mechanism having an operation lever 51 for locking and unlocking the double-wheel casters of the front wheels simultaneously is provided. When the operation lever of the operation mechanism is gripped, the casters are unlocked.COPYRIGHT: (C)2016,JPO&INPIT【課題】車椅子に乗る際足元の前輪が不用意に移動せず、後輪の大径のタイヤを痛めず、車輪のロック及びロック解除操作機構も簡単で、保守も簡単な車椅子を提供する。【解決手段】一対の大径の後輪2と一対の双輪キャスター3の前輪とを備えた車椅子1であって、双輪キャスターの前輪にはロック及びロック解除を行うロック機構4を設け、車椅子の後部の把持部124に前輪の双輪キャスターを一括して同時にロック及びロック解除操作を行う操作レバー51を有するロック及びロック解除操作機構を設け、操作機構の操作レバーを把持したときにキャスターのロックを解除するようにした車椅子。【選択図】図1
