| 摘要 |
PROBLEM TO BE SOLVED: To improve formation accuracy in the ladial direction in a stator core that is composed by annularly forming a developed core. SOLUTION: When the number of unit yokes 15a of a developed core 15 is set to n, the radius of the stator core is set to r [mm], and the length in the diameter direction of a joint part 15b is set to H [mm], a straight line length L in the development direction of the unit yoke 15a is obtained according to L=2 rcos(180 deg./n)-Hπ/n.
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