Electric drive unit for motor vehicles

Details Electric drive unit for motor vehicles Electric drive unit for motor vehicles

2007-05-08

2007-05-08

Pang, Roger (Department: 3681)

Planetary gear transmission systems or components

Input from independent power sources

Including electric motor input

C475S338000, C180S065510

Reexamination Certificate

active

11044735

ABSTRACT:
An electric drive unit for a motor vehicle comprises an electric motor having a motor housing, a stator mounted in the motor housing and having coil-wound poles, a rotor arranged internally of the stator with an air gap present between the stator and the rotor, and a planetary gear system having a sun wheel, a planet carrier, planet wheels and a ring gear. The planet wheels have a maximum diameter and axial positioning that an imaginary common envelope cylinder for all maximum diameters of the planet wheels is located radially inside of the winding heads present on one axial side of the stator and axially beside the portion of the rotor adjoining the air gap and that the planet wheels project in axial direction outwardly beyond said winding heads either not at all or with less than 50% of their tooth width in engagement with the sun wheel.

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European Search Report from EP 05 00 1679, dated Sep. 4, 2006 (plus translation).
German Office Action from DE 10 2004 004 617.4-32, dated Sep. 28, 2004 (plus translation).

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