公开(公告)号：US20180175698A1

公开(公告)日：2018-06-21

申请号：US15826927

申请日：2017-11-30

Applicant: Johnson Electric S.A.

Inventor： Ronny Keil ,  Daisuke Tsunashima ,  Kwong Yip Poon ,  Yongqiang Song

IPC: H02K7/00 ,  H02K7/08

CPC classification number: H02K7/003 ,  H02K7/08 ,  H02K7/083

Abstract: A motor shaft includes a main body and a chamfered end formed at an end of the main body. The chamfered end has a chamfer formed at a peripheral surface thereof, and a groove defined in an end surface thereof. An axial length of the chamfer is greater than a depth of the groove in the axial direction of the motor shaft. An electric motor including the motor shaft is also provided.

公开(公告)号：US20180175694A1

公开(公告)日：2018-06-21

申请号：US15819244

申请日：2017-11-21

Applicant: JOHNSON ELECTRIC S.A.

Inventor： Ronny Keil ,  Daisuke Tsunashima ,  Kwong Yip Poon ,  Yongqiang Song

IPC: H02K3/50 ,  H02K3/28 ,  H02K5/22

CPC classification number: H02K3/50 ,  H02K3/28 ,  H02K3/38 ,  H02K5/225 ,  H02K11/215 ,  H02K11/33

Abstract: A stator includes a stator core and three phase windings wound on the stator core. The stator provides a neutral point terminal, each of the three phase windings comprises a phase connecting end and a neutral point connecting end, the neutral point connecting end of each of the three phase windings is fixed to and electrically connected to the neutral point terminal. The neutral point connecting ends of the three phase windings are electrically connected together at outside of the circuit board. The circuit board does not need to provide extra space or wiring layer to achieve the combination of the neutral point connecting ends of the three phase windings.

公开(公告)号：US20160341219A1

公开(公告)日：2016-11-24

申请号：US15160225

申请日：2016-05-20

Applicant: Johnson Electric S.A.

Inventor： Yue Li ,  Chui You Zhou ,  Gang Li ,  Yong Wang ,  Yong Li ,  Wei Zhang ,  Ming Chen ,  Jie Chai ,  Kwong Yip Poon ,  Wen Liang Li ,  Lin Ping Gui

IPC: F04D29/66 ,  H02K1/27 ,  H02K5/16 ,  F04D17/16 ,  A47L5/12 ,  F04D29/28 ,  F04D29/44 ,  F04D29/42 ,  A45D20/00 ,  A47K10/48 ,  H02K1/14 ,  F04D25/06

CPC classification number: F04D29/661 ,  A45D20/00 ,  A47K10/48 ,  A47L9/0081 ,  F04D17/16 ,  F04D25/06 ,  F04D29/281 ,  F04D29/4226 ,  F04D29/441 ,  H02K1/148 ,  H02K7/14 ,  H02K29/03 ,  H02K2213/03

Abstract: A single-phase motor, an airflow generating apparatus, and an electric apparatus are provided. The motor includes a stator and a rotor. The stator includes a stator core and stator windings. The stator core includes a ring-shaped yoke and multiple pole portions. A magnetic bridge or slot opening is formed between each two adjacent pole portions. An end surface of each pole portion includes an arc surface. A positioning groove is formed in each arc surface. The arc surfaces of the pole portions cooperatively form a receiving cavity. The rotor includes a rotary shaft and a permanent magnet fixed to the rotary shaft. The permanent magnet is received in the receiving cavity. The arc surfaces are located on a cylindrical surface centered around a rotation axis of the rotary shaft. The cogging torque of the motor can be reduced, thus reducing the startup current and hence the noise of the motor.

Abstract translation: 提供单相电动机，气流发生装置和电气设备。 电动机包括定子和转子。 定子包括定子铁心和定子绕组。 定子铁芯包括环形磁轭和多极部分。 在每个两个相邻的极部之间形成磁桥或槽开口。 每个极部分的端面包括弧形表面。 在每个弧形表面上形成定位槽。 极部分的弧形表面协同地形成接收腔。 转子包括旋转轴和固定到旋转轴的永磁体。 永磁体被容纳在接收腔中。 弧形表面位于围绕旋转轴的旋转轴线居中的圆柱形表面上。 可以减小电动机的齿槽转矩，从而降低启动电流，从而降低电机的噪音。

公开(公告)号：US11202541B2

公开(公告)日：2021-12-21

申请号：US15806028

申请日：2017-11-07

Applicant: Johnson Electric S.A.

Inventor： Ronny Keil ,  Bhoopal Ponnuvelu ,  Kwong Yip Poon

IPC: A47L9/04 ,  H02K1/18 ,  H02K1/27 ,  H02K5/16 ,  H02K15/14 ,  H02K7/08 ,  H02K21/22 ,  H02K7/14 ,  H02K5/173

Abstract: An outer rotor motor includes an inner stator and an outer rotor. The inner stator includes a stator frame and a stator unit mounted to the stator frame. The outer rotor includes a shaft and a rotor unit fixed to the shaft. The stator frame is integrally formed from plastic as an integral structure and comprises a base and a hub extending from the base, the hub forms a chamber therein, supporting components are installed in the chamber, and the shaft extends into the chamber and supported by the supporting components such that the shaft is rotatable relative to the stator frame. In the present invention, the stator frame has an integral structure made of plastic which simplifies the structure of the motor and reduces the cost of the motor. The present invention further provides a vacuum cleaner that employs the motor.

公开(公告)号：US20170054352A1

公开(公告)日：2017-02-23

申请号：US15240185

申请日：2016-08-18

Applicant: Johnson Electric S.A.

Inventor： Yue Li ,  Kwong Yip Poon ,  Chui You Zhou ,  Jie Chai ,  Wen Liang Li ,  Lin Ping Gui ,  Tao Zhang ,  Qiang Zhou

IPC: H02K19/04 ,  H02K1/27 ,  H02K3/18 ,  H02K1/14

CPC classification number: H02K19/04 ,  H02K1/146 ,  H02K1/148 ,  H02K1/2706 ,  H02K3/18 ,  H02K21/16 ,  H02K29/03 ,  H02K2213/03

Abstract: A fluid generating device and an electric apparatus utilizing the fluid generating device are provided. The fluid generating device includes a motor and an impeller driven by the motor. The motor is a single phase direct current brushless motor which includes a stator and a rotor. The stator includes a stator core and a stator winding. The stator core includes an outer ring portion, teeth extending inwardly from the outer ring portion, a pole shoe formed at the tooth. Slot openings are formed between the pole shoes. The rotor is received in a receiving chamber defined by the pole shoes. Inner surfaces of the pole shoes and the rotor form therebetween a substantially even air gap. The presence of even air gap can reduce the cogging torque of the motor, thus reducing the startup current and noise of the motor.

Abstract translation: 提供了一种利用流体产生装置的流体产生装置和电气装置。 流体产生装置包括马达和由马达驱动的叶轮。 电动机是包括定子和转子的单相直流无刷电动机。 定子包括定子芯和定子绕组。 定子铁芯包括外环部分，从外环部分向内延伸的齿，形成在齿上的极靴。 在滑靴之间形成狭缝开口。 转子被容纳在由极靴限定的接收室中。 极靴和转子的内表面之间形成基本均匀的气隙。 均匀气隙的存在可以减小电机的齿槽转矩，从而降低电机的启动电流和噪声。