发明名称 |
Axial air gap type electric motor |
摘要 |
A magnetic pre-pressurizing section for pre-pressurizing the inner ring of the bearing in the axial direction by a difference of magnetic forces of permanent magnets of the two rotors is arranged. The magnetic pre-pressurizing section is constructed by a difference of a magnetizing amount for forming permanent magnets 8b, 9b arranged in the respective rotors. The magnetic pre-pressurizing section is also constructed by a difference of distances of an air gap L1 of a stator 2 and a permanent magnet 8b1, and an air gap L2 of the stator 2 and a permanent magnet 9b1. The magnetic pre-pressurizing section is also constructed by a difference of thicknesses of the rotating axis direction of a permanent magnet 8b1 and a permanent magnet 9b2 arranged in the respective rotors. |
申请公布号 |
EP1729396(A1) |
申请公布日期 |
2006.12.06 |
申请号 |
EP20060011603 |
申请日期 |
2006.06.06 |
申请人 |
FUJITSU GENERAL LIMITED |
发明人 |
KOJIMA, TOMONORI;ITAGAKI, ATSUSHI;MURAKAMI, MASANORI;TANABE, YOICHI;TANNO, TOSHIAKI;MATSUZAKI, HIROKAZU;YAMADA, MASAKI |
分类号 |
H02K1/27;H02K5/173;H02K16/02 |
主分类号 |
H02K1/27 |
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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