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公开(公告)号：US20170077773A1
公开(公告)日：2017-03-16
申请号：US15260772
申请日：2016-09-09
Applicant: Johnson Electric S.A.
Inventor： Yue LI , Chui You ZHOU , Kwong Yip POON , Ronny KEIL , Yong WANG , Xiao Ning ZHU
CPC classification number: H02K1/2786 , B27B17/08 , H02K1/146 , H02K3/18 , H02K21/22 , H02K21/222 , H02K29/03 , H02K2213/03
Abstract: A permanent magnet motor and a power tool are provided. The permanent magnet motor includes an excition and an armature. One of the excition and armature comprises a first magnetic core with permanent magnet members embedded therein. The permanent magnet members are arranged along a circumferential direction of the first magnetic core, such that an inner circumferential surface of the first magnetic core forms a plurality of magnetic poles with alternative polarities. The other of the excition and armature comprises a second magnetic core and windings. The second magnetic core is received in the first magnetic core and comprises teeth with the windings wound therearound. The embedded construction prevents the permanent magnet members from becoming disengaged from the magnetic core. A stronger magnetic pole can be formed by mutual induction of the permanent magnet members and the magnetic core, which increases the power density of the motor.
Abstract translation: 提供永磁电动机和动力工具。 永磁电动机包括排料和电枢。 排除和电枢中的一个包括嵌入其中的永磁体构件的第一磁芯。 永久磁铁构件沿着第一磁芯的圆周方向布置，使得第一磁芯的内周面形成具有可选极性的多个磁极。 另一个排除和电枢包括第二个磁芯和绕组。 第二磁芯被接收在第一磁芯中，并且包括缠绕绕组的齿。 嵌入式结构防止永磁体从磁芯脱离。 可以通过永磁体和磁芯的相互感应形成更强的磁极，这增加了电动机的功率密度。
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公开(公告)号：US20170353095A1
公开(公告)日：2017-12-07
申请号：US15601608
申请日：2017-05-22
Applicant: Johnson Electric S.A.
Inventor： Ronny KEIL , Jie CHAI , Jing CHEN , Tao ZHANG , Yue LI
CPC classification number: H02K49/102 , F04B35/04 , F04F5/20 , H02K1/2786
Abstract: A driving device configured to drive a rotary body includes a motor assembly and a plurality of first magnets disposed on the rotary body along a circumferential direction thereof. Sides of the magnets facing the motor assembly form a plurality of magnetic poles. Upon rotation of the motor assembly, the magnets is driven by magnetic interaction between the motor assembly and the magnetic member to rotate to drive the rotary body to rotate. The present invention also provides a bladeless fan including this driving device.
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公开(公告)号：US20180132684A1
公开(公告)日：2018-05-17
申请号：US15806028
申请日：2017-11-07
Applicant: Johnson Electric S.A.
Inventor： Ronny KEIL , Bhoopal PONNUVELU , Kwong Yip POON
CPC classification number: A47L9/0411 , A47L9/0455 , A47L9/0477 , H02K1/187 , H02K1/2786 , H02K5/16 , H02K5/1735 , H02K7/083 , H02K7/14 , H02K15/14 , H02K21/22
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.
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公开(公告)号：US20170353093A1
公开(公告)日：2017-12-07
申请号：US15613870
申请日：2017-06-05
Applicant: Johnson Electric S.A.
Inventor： Ronny KEIL , Kwong Yip POON , Bhoopal PONNUVELU
Abstract: A rotor includes a magnet yoke and a number of permanent magnets. The magnet yoke defines a number of accommodating slots therein, and each of the permanent magnets is received in one of the accommodating slots. An elastic member protrudes from the magnet yoke towards each of the accommodating slots, the permanent magnets are inserted in the corresponding accommodating slots, and the elastic members are bent and abut against the permanent magnets. A motor and a power tool include the rotor are also disclosed.
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