The present invention provides a power driving device for manual wheelchair, which is to configure a seat body with oscillating displacement on the side of the frame of wheelchair, and the seat body is configured with a roller unit to be driven rotating by a driving source, and the roller unit may have oscillating displacement along with the seat body and connected with the main wheels of wheelchair for transmission. Moreover, the seat body is connected with a clutch mechanism to control the seat body for reciprocal oscillating displacement, and drive the roller unit to connect or disconnect with the main wheels of wheelchair for switching the driving method of wheelchair. Thus, employing the clutch mechanism to switch the driving method of wheelchair cannot only provide a power driven manual wheelchair, but also keep the easy operation and retraction convenience for the manual wheelchair, and further greatly enhance the practical benefit of usage convenience for wheelchair.一種手動輪椅之動力驅動裝置,其係於輪椅之架體側邊裝設有可作擺動位移之座體,且於該座體上設有可由驅動源驅動旋轉之滾筒組,並使該滾筒組可隨著座體擺動位移,而與輪椅之主輪接合,以進行傳動,另於該座體連結設有一離合機構,以控制該座體作往復之擺動位移,並帶動該滾筒組與輪椅之主輪接合或分離,以供進行切換輪椅之驅動方式;藉此,利用該離合機構進行切換輪椅之驅動方式,其不僅可提供以動力驅動手動輪椅,且可保有手動輪椅易於操作及收整之方便性,進而達到大幅提升輪椅使用便利性之實用效益。30...手動輪椅31...架體32...主輪321...手輪33...轉向輪34...剎車曲柄40...動力驅動裝置41...座體45...電動馬達46...連結塊461...樞軸47...連桿
