PROBLEM TO BE SOLVED: To provide an improved assembling type self-travelling wheelchair that can be used as a bicycle in the outdoors or the like by mounting a unit type front wheel constituting part on a front side of a manual wheelchair.SOLUTION: A front wheel constituting part connected to a wheelchair includes a front wheel opposed to rear wheels of the wheelchair, a front wheel drive part for driving the front wheel, an extensible frame for supporting the front wheel, whose tip is detachably connected to the wheel chair, an operation part for extending and retracting the extensible frame, a stand base plate part provided at the rear of the front wheel through the frame that causes the front wheel to stand on its own, and a front wheel restraining part provided to the stand base plate part that restrains the movement of the front wheel of the wheelchair on the stand base plate part.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】本発明は、手動式車椅子の前側にユニット式の前輪構成部を装着し、屋外などで自転車として使用することができる組立式自走車椅子の改良に関する。【解決手段】車椅子に連結される前輪構成部が、車椅子の後輪と対向する前輪と、該前輪を駆動させる前輪駆動部と、前輪を支持すると共に先端が車椅子に着脱可能に連結される伸縮フレームと、該伸縮フレームを伸縮動させる操作部と、前輪の後方にフレームを介して設けられて前輪を自立させるスタンド基板部と、該スタンド基板部に設けられて、スタンド基板部上で車椅子の前輪の動きを拘束する前輪拘束部とからなっていることを特徴とする。【選択図】図1