Bearing lubricating structure of two rotor single stator...

Details Bearing lubricating structure of two rotor single stator... Bearing lubricating structure of two rotor single stator...

2005-08-09

2005-08-09

Lam, Thanh (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

Reexamination Certificate

active

06927516

ABSTRACT:
In a two rotor signal stator type electric motor, there is defined a bearing lubricating structure. The bearing lubricating structure comprises an oil flow passage that is defined at a rear end portion of the motor and is supplied with a lubrication oil under operation of the motor. Within the oil flow passage, there are arranged a first bearing that is operatively arranged between a rotation shaft of an outer rotor and a rotation shaft of an inner rotor and a second bearing that is operatively arranged between a rotor rear disc of the outer rotor and a fixed stator rear disc of a stator. A first oil distribution passage is exposed to a radially inner part of the oil flow passage to permit a lubrication oil flow from the oil flow passage toward the stator and inner rotor, and a second oil distribution passage is exposed to a radially outer part of the oil flow passage to permit a lubrication oil flow from the oil flow passage toward the stator and outer rotor.

REFERENCES:
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patent: 5541462 (1996-07-01), Nii et al.
patent: 6114784 (2000-09-01), Nakano
patent: 6741001 (2004-05-01), Takayanagi
patent: 6756714 (2004-06-01), Alex et al.
patent: 2000-14086 (2000-01-01), None
U.S. Appl. No. 10/815,865, filed Apr. 2, 2004, Oshidari et al.
U.S. Appl. No. 10/830,105, filed Apr. 23, 2004, Arimitsu et al.

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