| 摘要 |
PROBLEM TO BE SOLVED: To reduce usage quantity of electromagnetic steel sheets as iron core plates and to simplify a stacking step of the iron core plates. SOLUTION: A stator iron core 10 is formed by alternately stacking stator iron core plates 22 made of an electromagnetic plate sheet and stator iron core plates 22A made of a standard steel sheet. A rotor iron core 8 is formed by stacking rotor iron core plates 19A made of a standard steel sheet. The rotor iron core 8 may be formed by stacking the rotor iron core plates 19 made of the electromagnetic steel sheet. Further, the rotor iron core 8 may be formed in such a way that two kinds of blocks B1, B2 including substantially the same number of rotor iron core plates 19, 19A are formed and the blocks B1, B2 are stacked. The rotor iron core 22 plate (22A) may be formed by further punching a residual portion of a material 15 where the rotor iron core plate 19(19A) is punched. COPYRIGHT: (C)2008,JPO&INPIT
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