To provide a motor unit capable of suppressing noise generated in a signal line of a control substrate by reducing the influence of flux leakage in a motor.SOLUTION: A motor unit as an example of an embodiment comprises: a motor having a motor shaft, a rotor fixed to the motor shaft, and a stator; and a control substrate disposed so as to at least partially overlap the motor when viewed in a motor shaft direction. A sensor for detecting a magnetic field of the motor shaft, the rotor or a rotating body that rotates with the motor shaft, and a control element that controls the motor by using detection information from the sensor are mounted on the control substrate. The control substrate also includes a signal line connecting the sensor and the control element. The signal line includes an arc-shaped wiring portion that is curved so as to be convex to a radially outer side of a circle which is centered at an axis center of the motor shaft.SELECTED DRAWING: Figure 7

    【課題】モータの漏れ磁束の影響を低減して、制御基板の信号線に発生するノイズを抑制することが可能なモータユニットを提供する。【解決手段】実施形態の一例であるモータユニットは、モータ軸、モータ軸に固定されたロータ、およびステータを有するモータと、少なくとも一部がモータとモータ軸方向に見て重なって配置される制御基板とを備える。制御基板には、モータ軸、ロータ、又はモータ軸と共に回転する回転体の磁界を検出するセンサ、およびセンサの検出情報を用いてモータを制御する制御素子が実装されている。また、制御基板は、センサと制御素子を接続する信号線を有する。信号線は、モータ軸の軸芯を中心とする円の径方向外側に凸となるように曲がった弧状配線部を含む。【選択図】図7


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    Title :

    MOTOR UNIT AND POWER-ASSISTED BICYCLE


    Additional title:

    モータユニットおよび電動アシスト自転車


    Contributors:

    Publication date :

    2023-02-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES / B62J Fahrrad- oder Motorradsättel oder -sitze , CYCLE SADDLES OR SEATS / B62M RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES , Antrieb von Radfahrzeugen oder Schlitten durch den Fahrer



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