| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor whose stator is divided into a yoke and teeth and, which can satisfy a mechanical strength, improve an energy conversion efficiency extremely, and reduce a torque fluctuation such as a cogging torque, etc., SOLUTION: Tip parts 31 of adjacent teeth are brought into contact with each other to receive a counter force of a rotation torque. The structure can also suppress a flow of a flux and provide a mechanical strength as well in comparison with a structure, wherein the adjacent teeth are solidly connected to each other. As the tip parts 31 are brought into contact with each other on an inner diameter side, a inner diameter circularity after assembly can be secured, and hence, an cogging torque can be also reduced. Further, by using oriented electromagnetic steel plates as teeth materials, so as to have an easy-to- magnetize direction equal to a radial direction, areas of parts of the adjacent teeth which come closer to each other can be increased further, so that the high mechanical strength and the low cogging torque can be realized.
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