Patents by Inventor Kwong Yip Poon
Kwong Yip Poon has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11202541Abstract: 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.Type: GrantFiled: November 7, 2017Date of Patent: December 21, 2021Assignee: JOHNSON ELECTRIC INTERNATIONAL AGInventors: Ronny Keil, Bhoopal Ponnuvelu, Kwong Yip Poon
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Patent number: 10910912Abstract: 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.Type: GrantFiled: November 30, 2017Date of Patent: February 2, 2021Assignee: Johnson Electric International AGInventors: Ronny Keil, Daisuke Tsunashima, Kwong Yip Poon, Yongqiang Song
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Patent number: 10424998Abstract: 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.Type: GrantFiled: June 5, 2017Date of Patent: September 24, 2019Assignee: JOHNSON ELECTRIC INTERNATIONAL AGInventors: Ronny Keil, Kwong Yip Poon, Bhoopal Ponnuvelu
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Patent number: 10418877Abstract: An endcap assembly for an electric motor and a stator having same are provided. The endcap assembly includes an endcap, a first wire, and two terminals corresponding to the first wire. The two terminals are fixed to the endcap and configured to connect with corresponding windings of the electric motor. The endcap defines a first accommodating groove extending from one terminal to the other terminal. The first wire is received in the first accommodating groove, and two ends of the first wire are electrically connected to the two terminals, respectively.Type: GrantFiled: February 17, 2017Date of Patent: September 17, 2019Assignee: JOHNSON ELECTRIC INTERNATIONAL AGInventors: Kwong Yip Poon, Jie Chai, San Yuan Xiao, Kun Zhou Lu, Tao Zhang
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Patent number: 10404129Abstract: An electric motor for a blower and the like has a commutator and a brush assembly for making electrical contact with the commutator. The brush assembly includes a brush holder and a brush slidably mounted to the brush holder. The brush holder includes a brush holder plate and a side portion extending from the brush holder plate. The brush is arc-shaped and includes a first surface contacting the brush holder plate and a second surface contacting the side portion of the brush holder. The side portion of the brush holder has a number of ribs contacting the second surface of the brush.Type: GrantFiled: September 8, 2015Date of Patent: September 3, 2019Assignee: JOHNSON ELECTRIC INTERNATIONAL AGInventors: Wen Liang Li, James Ching Sik Lau, Kwong Yip Poon, Wan You Wang, Ji Dong Chai
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Patent number: 10389217Abstract: 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.Type: GrantFiled: August 18, 2016Date of Patent: August 20, 2019Assignee: JOHNSON ELECTRIC INTERNATIONAL AGInventors: Yue Li, Kwong Yip Poon, Chui You Zhou, Jie Chai, Wen Liang Li, Lin Ping Gui, Tao Zhang, Qiang Zhou
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Publication number: 20180175694Abstract: 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.Type: ApplicationFiled: November 21, 2017Publication date: June 21, 2018Inventors: Ronny Keil, Daisuke Tsunashima, Kwong Yip Poon, Yongqiang Song
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Publication number: 20180175698Abstract: 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.Type: ApplicationFiled: November 30, 2017Publication date: June 21, 2018Inventors: Ronny Keil, Daisuke Tsunashima, Kwong Yip Poon, Yongqiang Song
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Publication number: 20180132684Abstract: 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.Type: ApplicationFiled: November 7, 2017Publication date: May 17, 2018Inventors: Ronny KEIL, Bhoopal PONNUVELU, Kwong Yip POON
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Publication number: 20170353093Abstract: 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.Type: ApplicationFiled: June 5, 2017Publication date: December 7, 2017Inventors: Ronny KEIL, Kwong Yip POON, Bhoopal PONNUVELU
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Publication number: 20170244299Abstract: An endcap assembly for an electric motor and a stator having same are provided. The endcap assembly includes an endcap, a first wire, and two terminals corresponding to the first wire. The two terminals are fixed to the endcap and configured to connect with corresponding windings of the electric motor. The endcap defines a first accommodating groove extending from one terminal to the other terminal. The first wire is received in the first accommodating groove, and two ends of the first wire are electrically connected to the two terminals, respectively.Type: ApplicationFiled: February 17, 2017Publication date: August 24, 2017Inventors: Kwong Yip POON, Jie CHAI, San Yuan XIAO, Kun Zhou LU, Tao ZHANG
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Publication number: 20170077773Abstract: 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.Type: ApplicationFiled: September 9, 2016Publication date: March 16, 2017Inventors: Yue LI, Chui You ZHOU, Kwong Yip POON, Ronny KEIL, Yong WANG, Xiao Ning ZHU
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Publication number: 20170054353Abstract: A power tool includes a main body and a working portion. The working portion is rotatably coupled to the main body. A single phase brushless motor is mounted in the main body to drive the working portion to rotate bidirectionally. In comparison with a traditional motor, the single phase brushless motor make the power tool has a reduced size and reduced cost while ensuring the stable performance.Type: ApplicationFiled: August 18, 2016Publication date: February 23, 2017Inventors: Yue LI, Jing Ning TA, Chui You ZHOU, Qiu Mei LI, Yong WANG, Ming CHEN, Hong Liang YI, Tao ZHANG, Kwong Yip POON, Jie CHAI, Wen Liang LI, Lin Ping GUI
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Publication number: 20170054352Abstract: 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.Type: ApplicationFiled: August 18, 2016Publication date: February 23, 2017Inventors: Yue Li, Kwong Yip Poon, Chui You Zhou, Jie Chai, Wen Liang Li, Lin Ping Gui, Tao Zhang, Qiang Zhou
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Publication number: 20160341202Abstract: An electric pump has a pump body, a pump magnet received in the pump body, an impeller received in the pump body and fixed to the pump magnet, and a disc type electric motor. The electric motor includes a stator, disc type coils fixed to a surface of the stator, a rotor rotatably positioned above the coils, and a circuit board electrically connected to the coils. The rotor has a rotor magnet positioned beneath the pump body and magnetically coupled to the pump magnet. When the coils are energized, an axial magnetic field is generated to drive the rotor and, through the magnetic coupling between the rotor magnet and the pump magnet, rotate the impeller.Type: ApplicationFiled: May 18, 2016Publication date: November 24, 2016Inventors: Jie CHAI, Ching Hang LEUNG, Kwong Yip POON, Chun Kei YU, Wei Feng YUAN, Tao ZHANG, San Yuan XIAO
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Publication number: 20160341219Abstract: 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.Type: ApplicationFiled: May 20, 2016Publication date: November 24, 2016Inventors: 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
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Publication number: 20160072356Abstract: An electric motor for a blower and the like has a commutator and a brush assembly for making electrical contact with the commutator. The brush assembly includes a brush holder and a brush slidably mounted to the brush holder. The brush holder includes a brush holder plate and a side portion extending from the brush holder plate. The brush is arc-shaped and includes a first surface contacting the brush holder plate and a second surface contacting the side portion of the brush holder. The side portion of the brush holder has a number of ribs contacting the second surface of the brush.Type: ApplicationFiled: September 8, 2015Publication date: March 10, 2016Inventors: Wen Liang LI, James Ching Sik LAU, Kwong Yip POON, Wan You WANG, Ji Dong CHAI
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Publication number: 20150349605Abstract: An actuator for controlling an air damper includes a motor, an output connector for connecting the actuator to the air damper, a transmission mechanism connecting the motor to the output connector, and an energy storage device that drives the output connector to close the air damper when power to the motor is cut off. The motor has a stator and a rotor. The stator has a stator core including a yoke and nine poles extending from the yoke. The rotor has a shaft and an annular permanent magnet. The magnet forms twelve poles with alternate N and S polarities. An inclination angle of boundaries between adjacent poles of the magnet relative to an axis of the motor is in the range of 13 to 17 degrees.Type: ApplicationFiled: May 29, 2015Publication date: December 3, 2015Inventors: Yue LI, Jie CHAI, Kwong Yip POON, Wen Liang LI, Wai Chiu TANG, Bo YANG, Li Ping GUI
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Publication number: 20150145367Abstract: A rotor for a brushless motor includes a shaft, a rotor core and a number of permanent magnets. The rotor core includes inner and outer annular portions. The inner annular portion has a central hole for receiving the shaft. The outer annular portion includes a number of sector segments arranged in a ring, with adjacent sector segments defining a slot there between for receiving a corresponding permanent magnet. Radially outer ends of adjacent sector segments are interconnected by a connector. The sector segments include first sector segments and second sector segments arranged alternately. The first sector segments are separated from the inner annular portion. The second sector segments are each connected to the inner annular portion by connecting arms.Type: ApplicationFiled: November 28, 2014Publication date: May 28, 2015Inventors: Yue LI, Chui You ZHOU, Jie CHAI, Kwong Yip POON, San Yuan XIAO, Han HE
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Publication number: 20150122922Abstract: A food waste disposer includes a chamber housing, a grinder mechanism, an electric motor and a transmission device. The chamber housing defines a grinding chamber having an inlet and an outlet. The grinder mechanism is disposed within the grinding chamber and has a driven shaft and a rotating member coupled to the driven shaft. The electric motor is disposed at one side of the chamber housing and has an output shaft. The transmission device is coupled between the output shaft of the electric motor and the driven shaft of the grinder mechanism.Type: ApplicationFiled: November 5, 2014Publication date: May 7, 2015Inventors: John HAMMAR, King Ho LAI, Gary M. MARCY, Kwong Yip POON, Douglas Stephen WALZ, Wai Chi Jacky CHAN, Min LI