The utility model relates to a driving wheel detaching device, which is used to connect a rim frame with a transmission shaft and comprises a traction part, a stop cover, an elastic part, a rotary table and a clamping part.The traction part is connected to the transmission shaft and comprises a sleeve part and a chuck part.The chuck part is provided with a plurality of traction grooves and at least one safety groove.The rotary table is sleeved on the transmission shaft and forms a plurality of clamping grooves.The fastener is provided on the traction part and includes a set of annular wall part, a surrounding wall part, a flange wall part, a plurality of locking boss connected to the annular wall part and at least one safety boss.The detent can be operated between a driving position and a disengaged position.In the disengaged position, each locking boss is not embedded in the corresponding traction slot and the corresponding locking slot, and the at least one safety boss is embedded in the corresponding safety slot.一種驅動輪脫離裝置用於使一輪圈框體能與一傳動軸連動並包含一牽引件、一擋蓋、一彈性件、一轉盤及一卡掣件。該牽引件連接於該傳動軸並包括一套筒部及一卡盤部。該卡盤部形成有複數牽引槽及至少一安全槽。該轉盤套設於該傳動軸且形成有複數卡掣槽。該卡掣件設置於該牽引件並包括一套設於該套筒部的環形壁部、一圍繞壁部、一凸緣壁部、複數連接於該環形壁部的卡掣凸柱及至少一安全凸塊。該卡掣件能在一傳動位置及一脫離位置間作動。在該脫離位置時，每一卡掣凸柱不嵌設於對應的牽引槽及對應的卡掣槽且該至少一安全凸塊嵌設於對應的安全槽。
