Power transmission apparatus for vehicle and vehicle-driving...

Details Power transmission apparatus for vehicle and vehicle-driving... Power transmission apparatus for vehicle and vehicle-driving...

2007-07-17

2007-07-17

Wright, Dirk (Department: 3681)

Planetary gear transmission systems or components

Electric or magnetic drive or control

Differential drive or control

Reexamination Certificate

active

10970660

ABSTRACT:
The invention provides a power transmission apparatus for vehicle which can realize a high torque transmission efficiency and a high reduction gear ratio of a reduction gear unit with a more compact structure, and a vehicle-driving electric machinery system using the power transmission apparatus for vehicle. The power transmission apparatus for vehicle comprises a motor, a reduction gear unit for decelerating power outputted from the motor, and a differential gear unit for distributing the power decelerated by the reduction gear unit to left and right wheels. The reduction gear unit is a reduction gear mechanism including a plurality of gears mounted over a shaft which is rotatably held by a housing in a fixed position. The reduction gear unit and the differential gear unit are arranged within an area in oppositely facing relation to an axial end surface of the motor.

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European Search Report No. EP 04 02 5216, dated Dec. 12, 2005.

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