To provide a rotor, a motor and a brushless wiper motor, capable of suppressing an increase in noise and vibration and also capable of suppressing a drop in torque.SOLUTION: A rotor 9 includes a rotor core 32, a permanent magnet 33 and a salient pole 35. The salient pole 35 projects outward in the radial direction between the permanent magnets 33 adjacent to each other on the outer peripheral surface 32b of the rotor core 32 in the circumferential direction. Each of the rotor core 32 and the salient poles 35 is formed of a plurality of steel sheets stacked in the axial direction. Each steel sheet of the rotor core 32 is a non-oriented steel sheet. Each steel sheet of the salient pole 35 is an oriented electromagnetic steel sheet. An easy direction of magnetization of the oriented electromagnetic steel sheet is in parallel with the projection direction of the salient pole 35, and a hard direction of magnetization is a direction orthogonal to the easy direction of magnetization. The thickness of the oriented electromagnetic steel sheet of the salient pole 35 in the axial direction is formed to be smaller than the thickness of the non-oriented steel sheet of the rotor core 32 in the axial direction.SELECTED DRAWING: Figure 4

    【課題】騒音及び振動の増大を抑制するとともにトルクの低下を抑制することができるロータ、モータ及びブラシレスワイパーモータを提供する。【解決手段】ロータ9は、ロータコア32と、永久磁石33と、突極35とを備える。突極35は、ロータコア32の外周面32bの周方向で隣り合う永久磁石33の間において径方向の外方に突出する。ロータコア32及び突極35の各々は、軸方向に積層された複数の鋼板によって形成されている。ロータコア32の鋼板は無方向性鋼板である。突極35の鋼板は方向性電磁鋼板であり、方向性電磁鋼板の磁化容易方向は突極35の突出方向と平行であり、磁化困難方向は磁化容易方向の直交方向である。突極35の方向性電磁鋼板の軸方向の厚みは、ロータコア32の無方向性鋼板の軸方向の厚みよりも小さく形成されている。【選択図】図4


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    Titel :

    ROTOR, MOTOR AND BRUSHLESS WIPER MOTOR


    Weitere Titelangaben:

    ロータ、モータ及びブラシレスワイパーモータ


    Beteiligte:
    OHORI RYU (Autor:in) / KAWASHIMA YOSHICHIKA (Autor:in)

    Erscheinungsdatum :

    2020-05-21


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES / B60S SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR , Warten, Reinigen, Instandsetzen, Unterstützen, Anheben oder Rangieren von Fahrzeugen, soweit nicht anderweitig vorgesehen



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