| 摘要 |
In a laminated iron core ( 10 ) in which plural iron core pieces ( 13, 14, 15 ) are laminated through caulking projections ( 22, 24 ) and caulking holes ( 21, 23, 25 ) in which the caulking projections are fitted, and in the iron core pieces except a lowermost layer, the caulking projections and the caulking holes are formed at different positions of a same radius from a rotation center at skewing of the iron core pieces, and the caulking hole is longer in a circumferential direction than the caulking projection fitted in the caulking hole, and when the caulking projection of the iron core piece of an upper layer is fitted in the caulking hole of the iron core piece, a gap is formed in the circumferential direction of each of the caulking holes.
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