A brushless motor suppresses acoustic noise during rotation of a rotor without impairing its expected performance. Each of teeth (24) of a stator (23) includes a constricted portion (24a) on which a coil (25) is to be wound, and a tip end portion (24c) having a confronting surface (24b) that faces a rotor (22) and having a width greater than that of the constricted portion (24a). The brushless motor is furnished with a spacer (30) including a plurality of closure members (33) disposed between adjacent ones of tip end portions (24c), and fitted to the teeth (24) so that the confronting surfaces (24b) of the teeth (24) are exposed toward the rotor (22).


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    Title :

    BRUSHLESS MOTOR AND ELECTRIC BICYCLE PROVIDED WITH SAME


    Additional title:

    BÜRSTENLOSER MOTOR UND ELEKTROFAHRRAD DAMIT
    MOTEUR SANS BALAI ET BICYCLETTE ÉLECTRIQUE LE COMPRENANT


    Contributors:

    Publication date :

    2019-12-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES / B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer



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