Patent ID: 6413186
Filing Date: 2002-07-02
Classification: B60K,F16H,Y02T

Abstract:
A power train system for a vehicle having a motor and a differential gear unit, comprising:a stationary casing; a planetary reduction gear unit disposed within said casing and having a sun gear disposed coaxially with and connected to an output shaft of the motor so as to be driven thereby, a ring gear fixedly attached to said casing, at least one pinion gear disposed between said sun gear and said ring gear and a carrier carrying thereon said pinion gear and having an output portion; a parallel reduction gear unit disposed within said casing and having a smaller gear and larger gear meshing with each other, said smaller gear having a rotation shaft coaxially connected to said output portion of said carrier, said larger gear being disposed coaxially with an output portion of the differential gear unit which is disposed so that the output shaft of the motor and an axis of rotation of the output portion of the differential gear unit are parallely offset in the longitudinal direction of the vehicle; and a pair of bearings mounted on opposite ends of said rotation shaft of said smaller gear for supporting said opposite ends of said rotation shaft of said smaller gear rotatably and directly upon said casing.