发明公开
- 专利标题： Permanent magnet type rotor
- 专利标题（中）： Rotor mit Dauermagneten。
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申请号： EP91108590.0申请日： 1991-05-27
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公开(公告)号： EP0459355A1公开(公告)日： 1991-12-04
- 发明人: Toyoshima, Hisanori , Joraku, Fumio , Ishii, Yoshitaro , Kawamata, Mitsuhisa , Miyashita, Kunio , Koharagi, Haruo , Tahara, Kazuo , Abe, Takeshi , Miyata, Teruyuki
- 申请人： HITACHI, LTD.
- 申请人地址： 6, Kanda Surugadai 4-chome Chiyoda-ku, Tokyo 101 JP
- 专利权人： HITACHI, LTD.
- 当前专利权人： HITACHI, LTD.
- 当前专利权人地址： 6, Kanda Surugadai 4-chome Chiyoda-ku, Tokyo 101 JP
- 代理机构： Patentanwälte Beetz - Timpe - Siegfried Schmitt-Fumian - Mayr
- 优先权： JP141372/90 19900601; JP155203/90 19900615; JP252310/90 19900921
- 主分类号： H02K1/27
- IPC分类号： H02K1/27 ; H02K15/03
摘要：
A permanent magnet type rotor is disclosed which comprises a cylindrical core member (4), a plurality of arcuate permanent magnet segments (3) disposed around an outer periphery of the core member (4) and a non-magnetic sleeve (2) disposed around outer peripheries of the arcuate permanent magnet segments. The magnet segments (3) having the same pole are brought into contact with each other. Circumferential direction pressing members (14) are interposed between the magnet segments having the different poles. It is thus possible to enhance the arrangement precision of the magnet segments (3) and a balance precision during the rotation to thereby stabilize the magnetic distribution characteristics.
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