发明授权
- 专利标题: Electric rotating machine
- 专利标题(中): 电动旋转机
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申请号: US11030908申请日: 2005-01-10
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公开(公告)号: US07208856B2公开(公告)日: 2007-04-24
- 发明人: Daisuke Imai , Yoshihito Asao , Masahiko Fujita
- 申请人: Daisuke Imai , Yoshihito Asao , Masahiko Fujita
- 申请人地址: JP Tokyo
- 专利权人: Mitsubishi Denki Kabushiki Kaisha
- 当前专利权人: Mitsubishi Denki Kabushiki Kaisha
- 当前专利权人地址: JP Tokyo
- 代理机构: Sughrue Mion, PLLC
- 优先权: JPP2004-010823 20040119
- 主分类号: H02K1/22
- IPC分类号: H02K1/22 ; H02K1/04 ; H01F1/053 ; H01F41/02
摘要:
Claw-shaped magnetic poles are alternately disposed along the rotation plane of a rotor of an electric rotating machine, and a permanent magnet is disposed between the claw-shaped magnetic poles. Surface of the permanent magnet is coated with a coating layer. The coating layer is composed of a anticorrosive material performing sacrificial anticorrosion (metal flake in a coating film rusts prior to a matrix resulting in protection of the matrix) such as inorganic material containing zinc and a film of the anticorrosive material is formed by spraying. Ionization tendency of zinc is larger than that of iron composing the permanent magnet, and the permanent magnet is difficult to be rusted owing to the sacrificial anticorrosion. Consequently, anticorrosion of the permanent magnet disposed between the claw-shaped magnetic poles is improved.
公开/授权文献
- US20050156480A1 Electric rotating machine 公开/授权日:2005-07-21