PROBLEM TO BE SOLVED: To provide a motor capable of reducing size, especially thickness of multipole axial layers of a multipole magnet while causing angular positions of the respective multiple axial layers to be tracked by a fact that position sensors are not aligned.SOLUTION: A brushless DC electric motor for an automobile wiper system is provided with a plurality of coils 4 for a stator 3 to electromagnetically exciting a rotor 2. The rotor is provided with a multipole magnet 5, the multipole magnet is attached to be driven by rotation centering on a rotational axis L, and is provided with at least three multipole axial layers 7. A device 8 for determining a position of the rotor is provided with at least three position sensors 9 for detecting one position of the at least three multipole axial layers, each sensor is associated with one of the multipole axial layers, respectively, and the position sensors are installed in a plane P including a direction in parallel with the rotational axis of the multipole magnet without being aligned with one another.SELECTED DRAWING: Figure 1


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    Title :

    MOTEUR ÉLECTRIQUE A COURANT CONTINU SANS BALAIS POUR SYSTEME D'ESSUYAGE DE VÉHICULE AUTOMOBILE


    Additional title:

    BRUSHLESS DC ELECTRIC MOTOR FOR AUTOMOTIVE VEHICLE WIPER SYSTEM
    GLEICHSTROM-ELEKTROMOTOR OHNE WISCHBLÄTTER FÜR SCHEIBENREINIGUNGSSYSTEM EINES KRAFTFAHRZEUGS


    Contributors:

    Publication date :

    2022-05-11


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    French


    Classification :

    IPC:    G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / 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







    MOTEUR ELECTRIQUE A COURANT CONTINU SANS BALAIS POUR SYSTEME D'ESSUYAGE DE VEHICULE AUTOMOBILE

    LASSALLE CHRISTOPHE / CADOREL ROMAIN | European Patent Office | 2018

    Free access