Motor-type power device

Details Motor-type power device Motor-type power device

2011-07-19

2011-07-19

Nguyen, Tran N (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S06800R, C310S083000, C180S065600

Reexamination Certificate

active

07982346

ABSTRACT:
Due to a centrifugal force in a vehicle width direction due to turning of an automobile, oil in an electric motor housing chamber housing an electric motor and oil in a transmission housing chamber housing a reduction gear and a differential gear flows to-and-fro via oil communication passages that penetrate a partitioning wall. An opening on the transmission housing chamber side of the oil communication passages is spaced from the partitioning wall. Hence, when oil moves from the transmission housing chamber side to the electric motor housing chamber side, it is possible to prevent the oil quantity on the electric motor housing chamber side from increasing excessively and suppress an increase in resistance to oil stirring by a rotor of the electric motor while retaining a constant oil amount on the transmission housing chamber side to ensure lubricating performance for the reduction gear and the differential gear.

REFERENCES:
patent: 5674147 (1997-10-01), Tobita et al.
patent: 6155364 (2000-12-01), Nagano et al.
patent: 6474428 (2002-11-01), Fujikawa et al.
patent: 2007/0068735 (2007-03-01), Mori et al.
patent: 2007/0272196 (2007-11-01), Nishi et al.
patent: 05-164218 (1993-06-01), None
patent: 08-098464 (1996-04-01), None
patent: 2005-278319 (2005-10-01), None
patent: 2006042471 (2006-02-01), None
Japanese Office Action dated Sep. 30, 2009, issued in corresponding Japanese Patent Application No. 2007-294533.

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