发明名称 |
Electric rotating machine and hybrid car provided with the same |
摘要 |
An electric rotating machine includes a stator, a rotor inserted in a bore of the stator such that an air gap is formed between the stator and the rotor, and a plurality of permanent magnets embedded in a peripheral portion of the rotor core of the rotor in a circumferential arrangement. Slits are formed in portions of the rotor core each extending between the adjacent magnetic poles. Compressive stress is induced in portions of the rotor core each extending between the slit and the permanent magnet when stress is induced in the portion of the stator core extending between the slit and the permanent magnet by centrifugal force produced when the rotor rotates and acting on the permanent magnet and a pole piece covering the permanent magnet. |
申请公布号 |
US8390163(B2) |
申请公布日期 |
2013.03.05 |
申请号 |
US20090392700 |
申请日期 |
2009.02.25 |
申请人 |
SAITO YASUYUKI;GOTO TSUYOSHI;HINO NORIAKI;HOSHINO KATSUHIRO;HITACHI, LTD. |
发明人 |
SAITO YASUYUKI;GOTO TSUYOSHI;HINO NORIAKI;HOSHINO KATSUHIRO |
分类号 |
H02K21/12 |
主分类号 |
H02K21/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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