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Permanent magnet for motor, motor housing, and motor device 发明授权

2023-03-20 2940 343K 0

专利信息

申请日期 2025-07-11 申请号 US11791727
公开(公告)号 US7812484B2 公开(公告)日 2010-10-12
公开国别 US 申请人省市代码 全国
申请人 Yoshinobu Honkura; Hiroshi Matsuoka; Atsushi Kano; Kenji Noguchi; Hironari Mitarai; Satoru Kan
简介 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 magnet 13. This bonded magnet 13 is press-fitted in a housing 12 and is held. The bonded magnet 13 is 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 magnet 13 is press-fitted along an inner peripheral portion of the housing 12, 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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