A kind of wheelchair (four) for receiving folding pedal pivots positioning unit comprising two chair frames, a collapsible cell, a seat cushion, two handrails, a back pad, two main wheels, two connecting traction wheels, two pedal groups and two. Pivot positioning unit be installed in chair frame one before on vertical bar and an arm-rest frame,Pivot positioning unit have a pivot knot part,One first clamping member,One second clamping piece and number interlocking component,Pivot knot part locks in preceding vertical bar middle section,Vertical bar bottom section before first clamping member is fixed on,Second clamping piece is fixed on arm-rest frame front end,One main body bar of pedal group is fixed a pivot part on what pivot knot part using interlocking component,And by first clamping member clipping positioning body bar,So that use state at pedal group,It is retractd above what seat cushion when rotating pedal group,Main body bar is then limited by the second clamping piece,What at pedal group is allowed to receive fold-like state.一種可收摺踏板的輪椅(四)，包含二椅架、一折合單元、一座墊、二扶手、一背墊、二主輪、二連動輪、二踏板組及二樞轉定位單元。樞轉定位單元裝設在椅架的一前豎桿和一扶手架上，樞轉定位單元具有一樞結件、一第一夾持件、一第二夾持件及數鎖接組件，樞結件鎖固在前豎桿中段處，第一夾持件固定在前豎桿底段，第二夾持件固定在扶手架前端，踏板組的一主體桿利用鎖接組件將一樞轉部固定於樞結件上，並藉第一夾持件夾制定位主體桿，使得踏板組處於使用狀態，當將踏板組旋轉收置於座墊上方，則由第二夾持件限制主體桿，讓踏板組處於收摺狀態。
