PERMANENT MAGNET DIRECT-CURRENT ELECTRIC MOTOR

    公开(公告)号:US20220037964A1

    公开(公告)日:2022-02-03

    申请号:US17279979

    申请日:2019-09-24

    IPC分类号: H02K11/02 H02K1/17 H02K23/04

    摘要: The present application relates to a permanent magnet DC motor, which comprises a stator assembly and a rotor assembly, wherein the stator assembly comprises a housing and a magnetic cylinder, and the rotor assembly comprises a rotor; the rotor, the magnetic cylinder and the housing are sequentially arranged from inside to outside; the ratio of an angle corresponding to a commutation section of the surface magnetic curve of the magnetic cylinder to the corresponding angle of the surface magnetic curve of the corresponding magnetic pole is less than or equal to 15%; and the outer peripheral contour of the magnetic cylinder is based on a regular polygon, and curves are arranged at the connections of sides of the regular polygon to smoothly connect the sides of the regular polygon. The motor of the present application reduces the noise and vibration of the motor and improves its EMC level.

    Interference suppression system, drive, and handheld power tool

    公开(公告)号:US10666117B2

    公开(公告)日:2020-05-26

    申请号:US15730970

    申请日:2017-10-12

    申请人: Robert Bosch GmbH

    发明人: Joachim Heizmann

    摘要: An interference suppression system, a drive having such a suppression system, and a handheld power tool having such a drive, the interference suppression system including a core, the core having exactly one first through-opening, one second through-opening, and one third through-opening, a first segment of a first connecting line of the drive being situated in the first through-opening, a second segment of a second connecting line of the drive being situated in the second through-opening, and a third segment of a third connecting line of the drive being situated in the third through-opening.

    Brush assembly and motor using same

    公开(公告)号:US10483829B2

    公开(公告)日:2019-11-19

    申请号:US15447750

    申请日:2017-03-02

    摘要: A brush assembly includes a circuit board, at least two brushes, power connecting terminals for connecting with an external power supply, and a power supply branch circuit connected in series between a corresponding one of the power connecting terminals and a corresponding one of the brushes. The brush assembly further comprises an EMI suppressor connected between the power supply branch circuit and ground. The EMI suppressor is an axial capacitor formed by a conductor core, a cover, and a filling medium. The cover is attached around the conductor core, and the filling medium is filled between the conductor core and the cover. A motor utilizing the brush assembly is also provided.

    ON-VEHICLE MOTOR-DRIVEN COMPRESSOR
    18.
    发明申请

    公开(公告)号:US20190305647A1

    公开(公告)日:2019-10-03

    申请号:US16366009

    申请日:2019-03-27

    摘要: A common-mode choke coil includes a loop-shaped core, a cover made of a conductor covering at least part of the core, a first winding wound around an outer surface of the cover, and a second winding wound around the outer surface of the cover. The cover includes a first region around which the first winding is wound, a second region around which the second winding is wound, and two connection regions that connect the first region and the second region to each other in a circumferential direction. The cover has first and second slits in an inner circumferential surface. The first slit extends such that the first region is non-continuous with respect to a winding direction of the first winding. The second slit extends such that the second region is non-continuous with respect to a winding direction of the second winding.

    Housing, circuit arrangement, drive arrangement and method for producing the circuit arrangement

    公开(公告)号:US10390467B2

    公开(公告)日:2019-08-20

    申请号:US14787073

    申请日:2014-04-16

    摘要: A housing for a circuit assembly includes a housing interior chamber, an electromagnetic radiation-impermeable partition wall that divides the housing interior chamber into (a) a first housing interior chamber partial region configured to receive a first electrical component designed as a filter component and (b) a second housing interior chamber partial region configured to receive a second electrical component, an electromagnetic radiation-impermeable cover plate, and an electromagnetic radiation-impermeable housing section directly adjacent to the first housing interior chamber region. The partition wall, the cover plate, and the housing section enclose the first housing interior chamber partial region in three dimensions, creating a complete electromagnetic shielding of the first housing interior chamber partial region from the second housing interior chamber partial region. A circuit assembly having such a housing can be cost-effectively produced and has a reduced scope.

    DRIVE MOTOR FOR VEHICLE
    20.
    发明申请

    公开(公告)号:US20190181714A1

    公开(公告)日:2019-06-13

    申请号:US16194438

    申请日:2018-11-19

    IPC分类号: H02K3/487 H02K5/24 H02K11/02

    摘要: A drive motor for a vehicle includes: a stator and a rotor, in which the stator includes: stator teeth which are disposed between multiple slots, respectively, the multiple slots being formed at predetermined intervals in a circumferential direction corresponding to an outer circumferential surface of the rotor, and have a blocking portion which protrudes toward one of the slots disposed at both sides, the blocking portion formed at one side of an inner circumferential surface of each of the stator teeth facing the rotor, and a groove which is formed radially outward at an opposite side of the inner circumferential surface of each of the stator teeth; and opening sections each of which is in communication with the slot and formed between the blocking portion and the opposite side of the inner circumferential surface of the stator tooth adjacent to the blocking portion, and the slot is opened radially through the opening section.