Patent ID: 8857890

Claim:
A driving apparatus for an opening and closing body for vehicle, for driving an opening and closing body provided to a vehicle body to open and close the opening and closing body, the driving apparatus comprising: a drum rotatably provided to one of the vehicle body and the opening and closing body, a wire member whose one end is wound on the drum, and whose the other end is connected to the other of the vehicle body and the opening and closing body; an electric motor for driving the drum so as to rotate the drum, the electric motor being composed of an inner rotor type brushless motor; a differential reducer provided between the drum and the electric motor, and adapted to reduce the rotation of the electric motor to output the speed-reduced rotation to the drum; an input member axially aligned with the drum, and provided on the same side of the differential reducer as the electric motor, the input member having one end fixed to a rotor of the electric motor, and being rotated by the electric motor with the same rotation number as the electric motor; and an output member axially aligned with the drum, and provided on the same side of the differential reducer as the drum, the output member outputting the speed-reduced rotation to the drum; wherein the input member is rotatably provided in a motor case via a first ball bearing.