There are provided a rear wheel (7) rotatably provided in a body (2), a seat (32) disposed on a top surface side of the body (2), a seat link mechanism (33) by which the seat (32) is supported to be movable up and down between a raised position and a lowered position on the top surface side of the body (2), and a brake mechanism (41) which inhibits the rear wheel (7) from rotating in interlock with the seat link mechanism (33), when the seat (32) is raised from the lowered position to the raised position.本發明具有:後輪,可旋轉地設置於車體;座部,配置於車體之上面側;座用連桿機構,在車體之上面側於上升位置與下降位置之間可上下移動地支撐座部;及制動機構,當座部從下降位置上升至上升位置時,與座用連桿機構連動而阻止後輪之旋轉。1‧‧‧輪椅2‧‧‧車體3‧‧‧側邊框架6‧‧‧前輪7‧‧‧後輪8‧‧‧支撐臂11‧‧‧扶手12‧‧‧第1連桿機構(腳用連桿機構)13‧‧‧第1連桿14‧‧‧第2連桿15a‧‧‧連結構件17‧‧‧高度調整機構18‧‧‧腳座21‧‧‧固定筒22‧‧‧可動筒29‧‧‧容置部31‧‧‧止滑構件32‧‧‧座部33‧‧‧第2連桿機構(座用連桿機構)34‧‧‧第4連桿35‧‧‧第5連桿41‧‧‧制動機構42‧‧‧底部構件43‧‧‧引導長孔44‧‧‧滑動連桿45‧‧‧引導插銷46‧‧‧卡合插銷47‧‧‧旋動連桿48a‧‧‧支軸49‧‧‧制動連桿51‧‧‧制動構件54‧‧‧第1傳達連桿61‧‧‧操作桿F‧‧‧地板面
