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    Electric motor
    1.
    发明授权
    Electric motor 有权
    电动马达

    公开(公告)号：US09543798B2

    公开(公告)日：2017-01-10

    申请号：US14211986

    申请日：2014-03-14

    Applicant: Johnson Electric S.A.

    Inventor： James Ching-Sik Lau ,  Chun Kit Cheung ,  Duncan Yiu Lung Wong ,  Xiao Jun Yang

    IPC: H02K3/28 ,  H02K15/16

    CPC classification number: H02K3/28 ,  H02K15/165

    Abstract: A rotor for an electric motor has an iron core and a winding wound about teeth of the rotor core. Slots are formed between the teeth to accommodate coils of the winding. The winding includes several layers of windings distributed in the radial direction of the rotor. Each winding layer has a plurality of coils with the coils of each winding layer being wound on the teeth in the circumferential direction of the rotor. The overall center of gravity of the winding layers is substantially positioned at the geometric center of the rotor. Thus the center of gravity of the entire winding is located substantially at the geometric center of the rotor, thereby preventing noise caused by unstable rotation due to the deviation between the center of gravity of the winding and the geometric center of the rotor.

    Abstract translation: 用于电动机的转子具有围绕转子芯的齿缠绕的铁芯和绕组。 在牙齿之间形成槽以适应绕组的线圈。 绕组包括沿转子的径向方向分布的几层绕组。 每个绕组层具有多个线圈，每个绕组层的线圈沿转子的圆周方向缠绕在齿上。 绕组层的整体重心基本上位于转子的几何中心。 因此，整个绕组的重心基本上位于转子的几何中心处，从而防止由于绕组的重心和转子的几何中心之间的偏差引起的不稳定旋转引起的噪声。

    Motor driving assembly
    2.
    发明授权
    Motor driving assembly 有权

    公开(公告)号：US10693351B2

    公开(公告)日：2020-06-23

    申请号：US15361202

    申请日：2016-11-25

    Applicant: Johnson Electric S.A.

    Inventor： James Ching Sik Lau ,  Duncan Yiu Lung Wong ,  Chun Kit Cheung

    IPC: H02K13/00 ,  H02K11/21 ,  H02K11/22 ,  H02K7/116

    Abstract: A motor driving assembly includes a motor. The motor includes an outer housing, and a rotor and a brush holder received in the outer housing. The rotor includes a rotary shaft extending out of the outer housing. A commutator is fixed on a shaft portion of the rotary shaft within the outer housing. Brushes for contacting the commutator are disposed on the brush holder. A visible identification mark fixed relative to the rotary shaft is disposed outside the outer housing of the motor, such that a relative position between the brushes and the commutator in a rotational direction of the rotary shaft is identifiable by reference to a position of the visible identification mark relative to the outer housing in the rotational direction of the rotary shaft. As such, the commutator can be prevented from stalling at a position where arcing noise may be easily generated.

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