Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1997-10-24
1998-12-22
Dougherty, Thomas M.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 71, 310194, 310258, H02K 2906, H02K 1582
Patent
active
058523359
ABSTRACT:
This invention is to provide a stator structure for a rotary electric machine comprising poles of an armature core made of soft magnetic material and bobbins wound with coils at the respective poles and inserted into the poles in which the bobbin wound with the coils are mounted at the stator poles without decreasing motor characteristics. The material of a collar part (auxiliary pole tooth or extrapolation pole tooth) of a bobbin opposed to a rotor is formed of resin filled with soft magnetic material to improve the characteristics of a rotary electric machine. It is also effective to form the end of the collar part of the bobbin of a ferromagnetic material. Since a magnetic flux is also passed through the auxiliary pole tooth or the extrapolation pole tooth provided at the bobbin, the magnetic reluctance of the magnetic path to the rotary pole can be reduced. Further, the surface of the auxiliary pole tooth opposed to the rotary pole is formed in an arc shape along the inner periphery of the rotary pole, and a gap between the rotary pole and the auxiliary pole tooth is controlled.
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Fujitani Sakae
Suzuki Yuzuru
Dougherty Thomas M.
Mineba Ceo., Ltd.
Nguyen Tran N.
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