A motor includes a shaft to rotate about a central axis extending in a vertical direction, a metal heat sink including a through-hole through which the shaft extends, a substrate disposed at an upper side of the heat sink through a gap, a sensor magnet fixed to an upper end of the shaft, a rotation sensor located at an upper side of the sensor magnet, and a heat dissipating material located in a gap between the substrate and the heat sink. On at least one of the substrate and the heat sink, a relief portion that retains the heat dissipating material is located between the heat dissipating material and the through-hole when viewed from the vertical direction and is open toward a gap between the substrate and the heat sink.


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    Title :

    MOTOR AND ELECTRIC POWER STEERING DEVICE


    Contributors:

    Publication date :

    2019-10-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    H05K PRINTED CIRCUITS , Gedruckte Schaltungen / H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES / B62D MOTOR VEHICLES , Motorfahrzeuge



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