This invention discloses an integrated power device combining a low-tooth-difference
reducer and a motor, comprising a motor, a housing, and an output shaft coaxially arranged, with the housing rotatably connected to the output shaft. The housing has a hollow cavity inside, into which the motor output shaft extends and is linked via a reduction mechanism. A
camshaft is connected to one end of the motor output shaft near the output shaft. The reduction mechanism includes a
needle roller bearing mounted on the
camshaft, a drive gear mounted on the
needle roller bearing, and a transmission
assembly installed between the drive gear and the output shaft. The inner wall of the housing has an internal gear ring, with the drive gear meshing with the internal gear ring using low-tooth-difference gears. This invention improves transmission stability and efficiency by designing the motor output shaft and
camshaft as an integrated unit, while also making the space more compact. The drive gear and output shaft are driven by transmission steel balls, allowing the output end to directly bear radial force. The structure is simplified, with fewer parts, easier control of part
machining accuracy, and lower manufacturing costs.