Permanent magnet for motor, motor housing, and motor device

Details Permanent magnet for motor, motor housing, and motor device Permanent magnet for motor, motor housing, and motor device

2005-11-29

2010-10-12

Leung, Quyen (Department: 2834)

Electrical generator or motor structure

Dynamoelectric

Rotary

C310S156280, C310S156430, C310S043000

Reexamination Certificate

active

07812484

ABSTRACT:
To improve resistance of a motor device against an organic solvent and to suppress degradation in performance of the motor device with time.In a motor device, an excitation magnet is formed using a hollow-cylinder shaped anisotropic bonded magnet13. This bonded magnet13is press-fitted in a housing12and is held. The bonded magnet13is formed of a hollow-cylinder shaped anisotropic rare earth bonded magnet which is obtained by compounding an anisotropic rare earth magnet powder with a phenol-novolac type epoxy resin, followed by molding. The anisotropic rare earth bonded magnet13is press-fitted along an inner peripheral portion of the housing12, and on an exposed surface layer of the anisotropic rare earth bonded magnet press-fitted in the housing, a coating layer is formed by an infiltration treatment using a polyamide-imide-based resin.

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Japanese Office Action dated Jul. 25, 2007 (with partial English translation).
Form PCT/ISA/210.
Form PCT/ISA/237.
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