| 摘要 |
PROBLEM TO BE SOLVED: To provide a permanent magnet integral with an eccentric weight to which an eccentric weight function is easily and surely applied, with no additional new component to a motor, nor new additional process for manufacturing a magnet or core. SOLUTION: An eccentric weight forming powder of large specific gravity is put in a mold along with the alloy powder for a permanent magnet, which is sintered or integrally molded, so that an eccentric weight part is integrated in a prescribed part of a ring-like permanent magnet. Thus, an eccentric weight is easily and surely provided, with no additional new process when manufacturing the ring-like permanent magnet. COPYRIGHT: (C)2005,JPO&NCIPI
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