Electric bicycle's power take -off

The utility model discloses an electric bicycle's power take -off, including wheel hub main part, bearing, output device casing, motor cabinet, motor, first gear, second gear, axle no. 1, third gear, fourth gear, axle no. 2, internal gear, screw and mounting, the utility model has the advantages of reasonable structure simply, low in production cost, simple to operate, multiple functional, can effectually solve current power take -off and all be a whole with the motor, though structural simple relatively, will be pretty troublesome when maintain in the later stage, the especially coil inside the change and some wear part, the utility model discloses on at first installing electric bicycle with the output device casing, the during operation, at first to drive first gear rotatory for the starter motor, and that first gear drives the second gear is rotatory with the third gear, and it is rotatory that the third gear drives the fourth gear, and last fourth gear drives internal gear and the rotation of wheel hub m