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    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.

    Electric motor
    3.
    发明授权
    Electric motor 有权
    电动马达

    公开(公告)号：US09154013B2

    公开(公告)日：2015-10-06

    申请号：US13786024

    申请日：2013-03-05

    Applicant: Johnson Electric S.A.

    Inventor： James Ching Sik Lau ,  Xiao Jun Yang ,  Cheong Wing Yuen ,  Yu Ying Li ,  Yang Qing Hou

    IPC: H02K5/18 ,  H02K5/12 ,  H02K5/08 ,  H02K9/22

    CPC classification number: H02K5/18 ,  H02K5/08 ,  H02K9/22

    Abstract: An electric motor has a stator, a shaft and a rotor. The stator has an annular yoke portion; a plurality of stator teeth inwardly extending from the yoke portion; stator windings wound on the stator teeth; and a molded member made of heat conductive plastic material. The molded member has a plurality of fins arranged on an outer wall of the yoke portion, a covering portion disposed in the spaces between adjacent stator teeth, and two connecting portions respectively located at axially outer end faces of the yoke portion and connected to the covering portion and the fins. The covering portion covers an inner wall of the yoke portion and the stator windings, and connects to the fins via the connecting portions. Heat generated by the stator windings is transmitted to the fins via the covering portion and the connecting portions, where it is dissipated.

    Abstract translation: 电动机具有定子，轴和转子。 定子具有环形轭部; 从轭部向内延伸的多个定子齿; 定子绕组缠绕在定子齿上; 以及由导热塑料材料制成的模制件。 模制构件具有设置在轭部的外壁上的多个翅片，设置在相邻的定子齿之间的空间中的覆盖部分和分别位于轭部的轴向外端面处并连接到覆盖物的两个连接部分 部分和翅片。 覆盖部分覆盖磁轭部分的内壁和定子绕组，并且经由连接部分连接到散热片。 由定子绕组产生的热量经由覆盖部分和连接部分被传递到翅片，在那里它被消散。

    Driving device having motor and gearbox
    4.
    发明授权
    Driving device having motor and gearbox 有权

    公开(公告)号：US10443688B2

    公开(公告)日：2019-10-15

    申请号：US15442191

    申请日：2017-02-24

    Applicant: Johnson Electric S.A.

    Inventor： James Ching Sik Lau ,  Jing Ning Ta ,  Qiu Mei Li ,  Bin Yu

    IPC: F16H57/027 ,  F16H1/28 ,  F16H1/46 ,  F16H57/04 ,  F16H57/08 ,  F16H57/02 ,  H02K5/20 ,  H02K7/116 ,  H02K9/06

    Abstract: A driving device includes a motor and a gearbox. The gearbox includes a first sun gear, first planetary gears surrounding and engaged with the first sun gear, and a first internal gear ring surrounding and engaged with the first planetary gears. The first sun gear is coaxially fixed to a rotary shaft of the motor. Meshing planes of the first sun gear and the first planetary gears are slanted with respect to the rotary shaft. Each of the first planetary gears is subjected to an externally-exerted first force and exerts a transverse component of force toward the rotary shaft on the first sun gear. The motor structure of the driving device is simplified, which makes the driving device have a more compact structure, lighter weight and lower cost.

    Electric motor
    6.
    发明授权
    Electric motor 有权

    公开(公告)号：US09859767B2

    公开(公告)日：2018-01-02

    申请号：US14747466

    申请日：2015-06-23

    Applicant: Johnson Electric S.A.

    Inventor： James Ching Sik Lau ,  Siu Kin Tam ,  Hua Ping Zeng ,  Yuk Wai Elton Yeung

    IPC: H02K11/02 ,  H02K5/14 ,  H02K11/026 ,  H02K13/00

    CPC classification number: H02K5/148 ,  H02K11/026 ,  H02K13/006

    Abstract: An electric motor has an end cap assembly having a ground connection. The motor has a housing, a brush assembly including brushes, electrical components and a terminal holder, an end cap, and a ground plate. The brush assembly is secured in an open end of the housing. The end cap is positioned on an outer side of the brush assembly and fixed to the housing. The ground plate is disposed between and is resiliently compressed by the brush assembly and the end cap. The plate includes a plurality of elastic structures. Each elastic structure resiliently bears against corresponding leads of at least some of the electrical components. The ground plate is electrically connected to at least one of the housing and the end cap to accomplish a ground connection.

    Permanent magnet direct current motor and HVAC system using the same
    7.
    发明授权
    Permanent magnet direct current motor and HVAC system using the same 有权

    公开(公告)号：US10566855B2

    公开(公告)日：2020-02-18

    申请号：US15611157

    申请日：2017-06-01

    Applicant: Johnson Electric S.A.

    Inventor： Yue Li ,  James Ching Sik Lau ,  Chui You Zhou ,  Gang Li ,  Xiao Ning Zhu ,  Ya Ming Zhang ,  Yong Gang Zhang

    IPC: H02K1/17 ,  H02K1/24 ,  H02K3/18 ,  H02K13/10 ,  H02K23/62

    Abstract: A PMDC motor includes a housing, a stator magnet fixed to the inner circumferential surface of the housing, a rotor core received in the housing and facing the stator magnet, and rotor windings wound around the rotor core. The rotor core includes a plurality of rotor teeth, each of the rotor teeth including a tooth body and a tooth tip. A ratio of the outer diameter of the rotor core to an outer diameter of the housing is in the range of 0.6 to 0.67. Compared to the existing PMDC motor, the PMDC motor of the present invention can satisfy the same performance requirement, while reducing the size and weight of the rotor core and hence the weight of the rotor windings. In this way, the total weight and hence the moment of inertia of the rotor is reduced, thereby effectively reducing the noise generated during operation of the motor.

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