| 摘要 |
An electric motor 1 includes a rotor core 22 having n pieces of teeth T arranged in the circumferential direction around which a coil wire 23 is wound, a commutator 24 having n pieces of segments 24a 24b, and 24c, and the coil wire 23 having a connecting wire portion 23a that connects the teeth T and the segments 24a, 24b, and 24c and a crossover portion 23b that interconnects the segments 24a, 24b, and 24c at the opposite pole positions of the commutator 24 around a shaft 23. The crossover portion 23b that connects the i-th (i=1 to n) and the (i+n/2)th of the segments 24a, 24b, and 24c is wound prior to the connecting wire portion 23b that connects the teeth T connected with the i-th segment 24a, 24b, 24c and the (i+1)th segment 24a, 24b, 24c, respectively.
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