< Topic >The wheelchair which operativity at the time of wheelchair utilization can be good, pass the difference in level easily is offered. SolutionsNosewheel of small diameter and large diameter rear wheel 20, respectively on left and right it has the run hull 14 which possesses with 60. On run hull 14, seat section for the arrival seat and large diameter rear wheel 20 it possesses with the handling 26 which moves 16. Change gearbox 30 is provided for the side of large diameter rear wheel 20. Change gearbox 30 has the multiple Drive gears 33,34,35 Drive by the gear 36,37,38 for multiple changes which changes the Drive power from of handling 26 and the gear 33,34,35 for change. Change gear it has the change component 41 which makes with 36,37,38 and Drive gear engage 33,34,35 choice. This touching to the difference in level of the front, the step-climbing belt section 50 which it gets over, inclining to the upper part, it is provided in front lower part of nosewheel 60. < Choice figure >Drawing 1【課題】車椅子利用時の操作性が良く、段差を容易に通過することができる車椅子を提供する。【解決手段】小径の前輪60と大径後輪20とを、それぞれ左右に有した走行車体14を備える。走行車体14上に、着座用の座部16と、大径後輪20を動かすハンドリング26とを有する。大径後輪20の側方に切替ギアボックス30を備える。切替ギアボックス30は、ハンドリング26からの駆動力を切り替える複数の切替用歯車36,37,38と、切替用歯車33,34,35により駆動される複数の駆動歯車33,34,35を備える。切替歯車36,37,38と駆動歯車33,34,35とを選択的に噛み合わせる切替部材41を備える。前輪60の前方下部には、前方の段差に当接して乗り越える段差乗り越えベルト部50が、上方に傾斜して設けられている。【選択図】図1
