| 摘要 |
<p>It is capable of reducing compressive stress without forming slits or holes. A stator core comprises a circumferentially deformable part 14 that is formed on a radially outer peripheral side of a yoke 3 and has circumferentially pressed divided parts 9 each having dividing surfaces 1aa and 1ad pressed against each other in a circumferential direction by tightening interference; circumferentially facing divided parts 11 formed on a radially inner peripheral side of the yoke 3, each having a dividing line 11 a that is oriented in a radial direction and reaches a portion between teeth 5 and divided surfaces 1ac and 1af that face each other without a gap; and radially facing divided parts 13 formed at the center or at a portion closer to the outer periphery or elsewhere between the radially inner and outer sides of the yoke 3 along the circumferential direction at the predetermined interval, and each having divided surfaces 1ab and 1ae that face each other in the radial direction, and being continuous at one ends with the respective circumferentially facing divided parts 11 and at the other ends with the respective circumferentially pressed divided parts 9, the divided surfaces 1ab and 1ae moved relative to each other in the circumferential direction by compressive deformation of the circumferentially deformable part 14. The circumferentially facing divided parts 11 are in a state of compressive stress being smaller than compressive stress acting on the circumferentially pressed divided parts 9 or being zero.</p> |
