| 摘要 |
PROBLEM TO BE SOLVED: To provide a stator core which requires no machining in such a state that many core plates are stacked, and suppresses or prevents the saturation of magnetic flux for smooth rotational operation. SOLUTION: The stator core includes a first core plate 31 having flat portions 31a at parts facing each other, and a circular second core plate 32 having a diameter 32x identical or similar to the shortest distance 31x connecting the flat portions 31a to each other through the center of the first core plate 31. A bundle 31T of the first core plates 31 and a bundle of the second core plates 32 are alternately stacked along the axial direction of a casing 2. The first core plates 31 are arrayed in an axial direction while being displaced in the circumferential direction by each constant rotational angle. A flat surface region 3A formed with the flat portion 31a of the first core plates 31 has a skewed shape tilted at a predetermined angle with respect to the axial direction of the casing 2. COPYRIGHT: (C)2010,JPO&INPIT
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