Electrical generator or motor structure – Dynamoelectric – Rotary
Patent
1995-06-15
1998-06-02
Stephan, Steven L.
Electrical generator or motor structure
Dynamoelectric
Rotary
310 89, 310258, 310 67R, H02K 714, H02K 1100
Patent
active
057605122
ABSTRACT:
A brushless motor includes features that prevent jolting or shaking of a rotating shaft by urging the rotating shaft in one direction and have a simple construction and can heighten the mechanical strength of a portion holding the rotating shaft in order to lower noise. The brushless motor having a rotor having magnets and a rotating shaft, a stator for generating a rotating magnetic field with respect to the rotor, an exciting coil wound on the stator for receiving electrical power and for generating the magnetic field, and a holding plate including a magnetic member mounted in a position facing permanent magnets of the rotor. Accordingly, jolting or shaking of the rotating shaft can be prevented by urging the rotor and the rotating shaft toward the holding plate in order to attract the holding plate by the magnetic power of the magnets due to mounting the holding plate in a position facing the magnets of the rotor.
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Ohi Shinichi
Umegaki Fuhito
Stephan Steven L.
Wallace, Jr. Michael J.
Zexel Corporation
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