Patents by Inventor Chung-Ken Cheng
Chung-Ken Cheng 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: 10090724Abstract: A stator for use in a dual-phased motor includes a magnetic yoke portion, a first magnetic pole, a second magnetic pole, a third magnetic pole and a fourth magnetic pole. The first, second, third and fourth magnetic poles are circumferentially arranged around and coupled with the magnetic yoke portion. Each of the first, second, third and fourth magnetic poles is wound with a coil having a first coil layer and a second coil layer. The first coil layer and the second coil layer of each of the first, second, third and fourth magnetic poles are in different phases. In other embodiments, several methods for winding a stator for use in a dual-phased motor are respectively proposed.Type: GrantFiled: July 31, 2015Date of Patent: October 2, 2018Assignee: Sunonwealth Electric Machine Industry Co., Ltd.Inventors: Chung-Ken Cheng, I-Fen Hsieh, Shit-Chin Wu, Sing-Ying Lee
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Publication number: 20180226854Abstract: A method for winding a stator for use in a dual-phased motor is disclosed. The stator includes a magnetic yoke portion and first, second, third and fourth magnetic poles that are circumferentially arranged around and coupled with the magnetic yoke portion. The method includes winding a first wire around the first and third magnetic poles to form first coil layers, winding a second wire around the first magnetic pole to form a second coil layer, around the second magnetic pole to form a first coil layer, around the third magnetic pole to form a second coil layer, and around the fourth magnetic pole to form a first coil layer, and winding a third wire around the second and fourth magnetic poles to form second coil layers.Type: ApplicationFiled: April 10, 2018Publication date: August 9, 2018Inventors: Chung-Ken Cheng, I-Fen Hsieh, Shit-Chin Wu, Sing-Ying Lee
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Publication number: 20160087500Abstract: A stator for use in a dual-phased motor includes a magnetic yoke portion, a first magnetic pole, a second magnetic pole, a third magnetic pole and a fourth magnetic pole. The first, second, third and fourth magnetic poles are circumferentially arranged around and coupled with the magnetic yoke portion. Each of the first, second, third and fourth magnetic poles is wound with a coil having a first coil layer and a second coil layer. The first coil layer and the second coil layer of each of the first, second, third and fourth magnetic poles are in different phases. In other embodiments, several methods for winding a stator for use in a dual-phased motor are respectively proposed.Type: ApplicationFiled: July 31, 2015Publication date: March 24, 2016Inventors: Chung-Ken Cheng, I-Fen Hsieh, Shit-Chin Wu, Sing-Ying Lee
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Patent number: 8970149Abstract: A motor circuit with power-off braking function includes a driving unit, a coil unit, and a braking unit. The driving unit includes a plurality of switch arms connected in parallel, with each switch arm having a series contact. The coil unit includes a plurality of coils and a central contact. Each coil includes an end connected to the series contact of one of the switch arms. The other end of each coil is connected to the central contact. The braking unit includes a brake loop switch coupled between the central contact of the coil unit and an end of the switch arms. When power is cut off, a plurality of brake loops is formed to share the transient current during braking.Type: GrantFiled: September 14, 2012Date of Patent: March 3, 2015Assignee: Sunon Electronics (Kunshan) Co., Ltd.Inventors: Chung-Ken Cheng, Shou-Chien Chang, Chieh-Jen Yang
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Publication number: 20140210347Abstract: An AC LED lamp includes first and second AC power ends, a lighting module and a DC power output circuit. The lighting module has first and second ends and an LED unit. The first end is connected to the first AC power end. The LED unit has one or more LEDs. The DC power output circuit has first and second ends. The second end of the DC power output circuit is coupled to the second AC power end. The first end of the DC power output circuit is coupled to the second end of the lighting module. The DC power output circuit has a DC output side and is not directly connected to the first AC power end. The DC power output circuit has a rectifying unit and a voltage limiting and filtering unit. The rectifying unit and the voltage limiting and filtering unit are coupled to the lighting module.Type: ApplicationFiled: March 27, 2014Publication date: July 31, 2014Applicant: SUNONWEALTH ELECTRIC MACHINE INDUSTRY CO., LTDInventors: Alex HORNG, Chung-Ken CHENG, Chi-Hung KUO, Kuan-Yin HOU
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Patent number: 8791643Abstract: An alternating current (AC) light-emitting diode (LED) lamp includes a first AC power end, a second AC power end, a lighting module and a direct current (DC) power output circuit. The lighting module has a first end, a second end and at least one LED unit, wherein the first end is electrically coupled to the first AC power end. The at least one LED unit has one or more LEDs connected in series. The DC power output circuit has a first end and a second end, wherein the second end of the DC power output circuit is electrically coupled to the second AC power end, while the first end of the DC power output circuit is electrically coupled to the second end of the lighting module. The DC power output circuit has a DC output side.Type: GrantFiled: January 13, 2011Date of Patent: July 29, 2014Assignee: Sunonwealth Electric Machine Industry Co., LtdInventors: Alex Horng, Chung-Ken Cheng, Chi-Hung Kuo, Kuan-Yin Hou
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Patent number: 8610387Abstract: A motor system comprises a motor and a driving module. The motor has a plurality coil units not electrically connected to each other. The driving module has a control unit, a driving unit and a circuit board. The control unit is coupled to the driving unit. The driving unit has a plurality of driving circuits. The number of the driving circuits is the same as the number of the coil units. Each of the driving circuits is coupled to a respective one of the coil units so as to form a plurality of independent coil loops. The control unit and the driving unit are mounted on the circuit board.Type: GrantFiled: April 30, 2010Date of Patent: December 17, 2013Assignee: Sunonwealth Electric Machine Industry Co., Ltd.Inventors: Alex Horng, Kuan-Yin Hou, Chung-Ken Cheng, Cheng-Tai Cheng, Yu-Fang Li
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Publication number: 20130271045Abstract: A motor circuit with power-off braking function includes a driving unit, a coil unit, and a braking unit. The driving unit includes a plurality of switch arms connected in parallel, with each switch arm having a series contact. The coil unit includes a plurality of coils and a central contact. Each coil includes an end connected to the series contact of one of the switch arms. The other end of each coil is connected to the central contact. The braking unit includes a brake loop switch coupled between the central contact of the coil unit and an end of the switch arms. When power is cut off, a plurality of brake loops is formed to share the transient current during braking.Type: ApplicationFiled: September 14, 2012Publication date: October 17, 2013Inventors: Chung-Ken CHENG, Shou-Chien CHANG, Chieh-Jen YANG
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Patent number: 8492923Abstract: A lamp circuit is disclosed, comprising a direct current (DC) power supplier adapted to provide a supply voltage, a driving unit coupled to the DC power supplier so as to receive the supply voltage, and a light-radiating module coupled to the driving unit and having a DC output side. The driving unit generates a constant DC current that passes through the light-radiating module such that a DC voltage to be supplied to a DC load is built at the DC output side.Type: GrantFiled: April 29, 2010Date of Patent: July 23, 2013Assignee: Sunonwealth Electric Machine Industry Co., Ltd.Inventors: Alex Horng, Chi-Hung Kuo, Chung-Ken Cheng, Chieh-Feng Lee
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Patent number: 8421383Abstract: A rotation control circuit comprises a motor-driving unit and a rotation-switching unit. The motor-driving unit is coupled to a motor of a fan. The rotation-switching unit is coupled to the motor-driving unit and has at least a charging-discharging circuit for generating a rotation control command, the rotation control command controls the motor to rotate in a forward direction for a time period when the motor starts to operate, and controls the motor to rotate in a backward direction opposite to the forward direction.Type: GrantFiled: March 15, 2010Date of Patent: April 16, 2013Assignee: Sunonwealth Electric Machine Industry Co., Ltd.Inventors: Alex Horng, Chi-Hung Kuo, Chung-Ken Cheng
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Patent number: 8279607Abstract: A cooling module assembly method includes forming at least one through-hole on a circuit board; coupling the circuit board to a heat dissipating unit so that a face of the circuit board is coupled to a coupling face of the heat dissipating unit; filling the at least one through-hole with metal solders; fixing at least one heat-generating element to another face of the circuit board, with the at least one heat-generating element aligned with and covering the at least one through-hole; and soldering the at least one heat-generating element and the heat dissipating unit together by melting the metal solders in the at least one through-hole.Type: GrantFiled: June 30, 2010Date of Patent: October 2, 2012Assignee: Sunonwealth Electric Machine Industry Co., Ltd.Inventors: Alex Horng, Chi-Hung Kuo, Chih-Hao Chung, Chung-Ken Cheng, Jui-Feng Wang
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Patent number: 8248013Abstract: A fan device with improved speed control module includes a stator, a rotor, and a speed control module. The stator has a driving unit outputting currents for the stator to generate alternative magnetic fields and thus turn the rotor. The speed control module includes a control unit and a speed adjusting circuit, with the control unit generating a control command for the driving unit and further outputting a state signal for the speed adjusting circuit to control whether a PWM signal enters the control circuit or not.Type: GrantFiled: March 26, 2009Date of Patent: August 21, 2012Assignee: Sunonwealth Electric Machine Industry Co, Ltd.Inventors: Alex Horng, Chun-Yuan Huang, Chung-Ken Cheng, Nguyen Nguyen, Susheela Narasimhan
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Publication number: 20120176054Abstract: A light device comprising a light emitting unit, a voltage control unit, and a current control unit is provided. The light emitting unit is capable of receiving DC power. The voltage control unit has a power input terminal, a power output terminal, and a voltage setting member, with the power input terminal connecting with the light emitting unit, the voltage setting member having a threshold value to control the voltage of the power output terminal in a value equal to or lower than the threshold value. The current control unit has a voltage regulating member and a current adjusting member, with the voltage regulating member connecting with the power output terminal of the voltage control unit and generating a stable DC voltage, and with the current adjusting member connected between the voltage regulating member and a ground point to stabilize a current passing through the current adjusting member.Type: ApplicationFiled: August 22, 2011Publication date: July 12, 2012Inventors: Chi-Hung KUO, Chung-Ken CHENG, Li-Yong KE
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Publication number: 20120068568Abstract: An axial-winding motor includes a stator and a rotor. The stator has a winding assembly, a first magnetic-conducting plate and a second magnetic-conducting plate. The first and second magnetic-conducting plates are coupled with two ends of the winding assembly in an axial direction of the winding assembly. The first magnetic-conducting plate includes a plurality of first pole pieces on an outer periphery thereof, and the second magnetic-conducting plate includes a plurality of second pole pieces on an outer periphery thereof. The rotor is rotatably coupled with the stator and has a plurality of magnetic pole faces facing the stator. One of the first pole pieces is at least partially overlapped with adjacent one of the second pole pieces in an axial direction of the stator.Type: ApplicationFiled: November 3, 2010Publication date: March 22, 2012Inventors: Alex Horng, Yen-Ming Chen, Chung-Ken Cheng
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Publication number: 20120049698Abstract: A BLDC motor with dual rotation directions includes a rotor and a stator. The rotor has a rotating portion and a magnet portion, wherein the magnet portion has a plurality of magnetic poles each having a magnetic pole face. The stator has an excitation assembly and a control assembly. The rotating portion of the rotor is rotatably coupled with the stator. The excitation assembly has at least one excitation face and at least one coil. The control assembly is coupled to the at least one coil and has two sensors adjacent to the magnet portion. A distance exists between the two sensors on a rotational path of the magnet portion.Type: ApplicationFiled: November 4, 2010Publication date: March 1, 2012Inventors: Alex Horng, Kuan-Yin Hou, Chung-Ken Cheng, Chi-Hung Kuo, Chih-Hao Chung
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Publication number: 20120007510Abstract: A lamp with power supply detection includes a power supply unit, a control module and a lighting module. The power supply unit provides a direct current (DC) voltage. The control module is coupled to the power supply unit, receives and stores the DC power, and generates a control signal according to whether the DC power is terminated or regained. The lighting module is coupled to the power supply unit and the control module, receives the DC power and adjusts brightness of the lighting module according to the control signal.Type: ApplicationFiled: July 7, 2010Publication date: January 12, 2012Inventors: Alex Horng, Kuan-Yin Hou, Chung-Ken Cheng, Ching-Ya Huang, Li-Yang Lyu
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Publication number: 20110292614Abstract: A cooling module assembly method comprises forming at least one through-hole on a circuit board; coupling the circuit board to a heat dissipating unit so that a face of the circuit board is coupled to a coupling face of the heat dissipating unit; filling the at least one through-hole with metal solders; fixing at least one heat-generating element to another face of the circuit board, wherein the at least one heat-generating element aligns with and covers the at least one through-hole; and soldering the at least one heat-generating element and the heat dissipating unit together by melting the metal solders in the at least one through-hole.Type: ApplicationFiled: June 30, 2010Publication date: December 1, 2011Inventors: Alex Horng, Chi-Hung Kuo, Chih-Hao Chung, Chung-Ken Cheng, Jui-Feng Wang
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Publication number: 20110266989Abstract: A motor system comprises a motor and a driving module. The motor has a plurality coil units not electrically connected to each other. The driving module has a control unit, a driving unit and a circuit board. The control unit is coupled to the driving unit. The driving unit has a plurality of driving circuits. The number of the driving circuits is the same as the number of the coil units. Each of the driving circuits is coupled to a respective one of the coil units so as to form a plurality of independent coil loops. The control unit and the driving unit are mounted on the circuit board.Type: ApplicationFiled: April 30, 2010Publication date: November 3, 2011Inventors: Alex HORNG, Kuan-Yin Hou, Chung-Ken Cheng, Cheng-Tai Cheng, Yu-Fang Li
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Publication number: 20110254490Abstract: A motor-driving apparatus, comprising a main driving unit having a plurality of main current-driving ends coupled to a stator coil of a motor, a detection control unit coupled to the main driving unit, and an auxiliary driving unit coupled to the detection control unit and having a plurality of auxiliary current-driving ends. Wherein, the number of the main current-driving ends is the same as that of the auxiliary current-driving ends, and each of the main current-driving ends is connected to a respective one of the auxiliary current-driving ends in parallel.Type: ApplicationFiled: April 20, 2010Publication date: October 20, 2011Inventors: Alex Horng, Kuan-Yin Hou, Chung-Ken Cheng, Cheng-Iai Cheng, Yu-Fang Li
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Publication number: 20110221364Abstract: A rotation control circuit comprises a motor-driving unit and a rotation-switching unit. The motor-driving unit is coupled to a motor of a fan. The rotation-switching unit is coupled to the motor-driving unit and has at least a charging-discharging circuit for generating a rotation control command, the rotation control command controls the motor to rotate in a forward direction for a time period when the motor starts to operate, and controls the motor to rotate in a backward direction opposite to the forward direction.Type: ApplicationFiled: March 15, 2010Publication date: September 15, 2011Inventors: Alex HORNG, Chi-Hung Kuo, Chung-Ken Cheng