The utility model relates to a labor-saving transmission device for a nursing bed, which comprises a power output shaft to drive the transmission mechanism, and then the transmission mechanism respectively drives the first and second push-up rods, and the first push-up rod can drive a back movable frame to have an inclined angle, The two push-up levers can simultaneously drive the one-legged movable frame to settle downwards. This creation system uses the transmission device composed of the principle of lever operation on the nursing bed, which has the labor-saving characteristics and the convenience of operation, and thus can be directly used by the patient. The action of defecation in the bed reaches the patient's self-care effect.一種護理床之省力型傳動裝置，包含一動力輸出軸來帶動傳動機構，再由傳動機構分別驅動第一、二推升桿，第一推升桿可以帶動一背部活動架呈一傾斜角度，第二推升桿可以同步帶動一腿部活動架向下沉降；本創作係將槓桿操作原理所構成的傳動裝置使用在護理床上，其具有省力特性及操作上的方便性，進而可供病人直接在病床上進行排便的動作，達到病人自理之功效。
