| 摘要 |
PROBLEM TO BE SOLVED: To easily lower a cogging torque forming a stator through the centralized winding. SOLUTION: A magnetic piece 150 is fixed to a fitting seat 140u of a cylindrically stacked body 140, magnetization center of the first and second cylindrical members 111, 112 having a first hole is displaced step in step-wise manner by about 360 deg./(2 m) from the magnetization center of the second cylindrical member 112, and a shaft 101 is inserted to the first holes 111s, 112s of the first and second cylindrical members 111, 112. Here, m is the least common multiple of the number of slots and a logarithmic value of the doubled magnetic poles.
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