A stator assembly has a motor housing of a cylindrical shape and a stator fixed to an inner peripheral wall of the motor housing by a shrink fitting process. A stator core of the stator includes a projecting portion in contact with the motor housing and a stopper portion, which is smaller than the projecting portion in a radial direction. The stopper portion is in contact with the motor housing in an actual-use temperature range. The projecting portions and the stopper portions are alternately arranged in a circumferential direction in a cyclic manner. A cycle unit is composed of one or more than one projecting portion and one or more than one stopper portion. Multiple stator core sheets are built up in such a way that the cycle units are alternately arranged in an axial direction and neighboring stator core sheets are displaced in the circumferential direction by a predetermined shift angle. A curvature radius of the projecting portion at a position, at which the projecting portion is in contact with the motor housing, is smaller than a radius of a circumscribed circle of the projecting portion.


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    Titel :

    Electric motor and stator assembly


    Beteiligte:
    KIMURA AKIHIRO (Autor:in)

    Erscheinungsdatum :

    02.08.2022


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Klassifikation :

    IPC:    H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES / B62D MOTOR VEHICLES , Motorfahrzeuge



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