PROBLEM TO BE SOLVED: To provide a brushless motor which can restrict generation of noise when a rotor is rotated without impairing its performance.SOLUTION: Each tooth 24 of a stator 23 comprises a narrowed portion 24a around which a coil 25 is wound; and a tip portion 24c which has a facing surface 24b facing a rotor 22, and has a width wider than that of the narrowed portion 24a. A brushless motor has a plurality of closing members 33 arranged between the tooth 24 and the tip portion 24c adjacent to each other, and comprises a spacer 30 to be attached to the tooth 24 so that the facing surface 24b of each tooth 24 is exposed towards the rotor 22.SELECTED DRAWING: Figure 3
【課題】本来の性能を損なわずに、ロータ回転時における異音の発生を抑制することができるブラシレスモータを提供する。【解決手段】ステータ23の各ティース24は、コイル25が巻かれるくびれ部24aと、ロータ22に対向する対向面24bを有しかつくびれ部24aよりも幅が大きい先端部24cとを備える。ブラシレスモータは、隣り合うティース24の先端部24cの間に配置された複数の閉鎖部材33を有し、各ティース24の対向面24bがロータ22に向かって露出するようにティース24に取り付けられるスペーサ30を備えている。【選択図】図3
BRUSHLESS MOTOR AND ELECTRIC BICYCLE WITH SAME
ブラシレスモータおよびそれを備えた電動自転車
2016-09-05
Patent
Elektronische Ressource
Japanisch
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