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公开(公告)号：US20210383680A1
公开(公告)日：2021-12-09
申请号：US17337722
申请日：2021-06-03
Applicant: Defond Electech Co., Ltd. , Defond Components Limited
Inventor： Cheng Chen Nieh , Chiu Keung Loong , Xiaoling Liu , Chun Kan Lin
IPC: G08C17/02 , H04B1/3827
Abstract: A system for controlling operation of an electric device includes the electric device, at least one contactless sensor module connected to the electric device, and a wearable item equipped with a sensor-readable tag configured for contactless interaction with the contactless sensor of the electric device. The tag is configured for movement with the wearable item into a plurality of different positions relative to the contactless sensor, and the contactless sensor is configured to sense different sensor readings in response to movement of the tag into the plurality of different positions. The electric device is configured to enter a first operating mode in response to the contactless sensor sensing a first position of the tag, and to enter a second operating mode in response to the contactless sensor sensing a second position of the tag.
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公开(公告)号：US20190143501A1
公开(公告)日：2019-05-16
申请号：US16180922
申请日：2018-11-05
Applicant: DEFOND ELECTECH CO., LTD , DEFOND COMPONENTS LIMITED
Inventor： Wai Man Wong , Chiu Keung Loong
Abstract: A control assembly for use in controlling a speed of operation of an electric device, the control assembly including: a control assembly housing; a magnetic sensor; a magnetic element; an actuator that is configured for movement relative to the control assembly housing wherein responsive to said movement of the actuator relative to the control assembly housing, the magnetic sensor and magnetic element move relative to each other between at least one of a first position and a second position such that the magnetic sensor senses a first magnetic field reading when in the first position and senses a second magnetic field reading when in the second position; and, a control module operably connected to the magnetic sensor and configured for controlling the electric device to operate in at least one of a first speed and a second speed by reference to an output of the magnetic sensor indicative of the sensed first magnetic field reading and the second magnetic field reading respectively.
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公开(公告)号：US11913812B2
公开(公告)日：2024-02-27
申请号：US17455985
申请日：2021-11-22
Applicant: Defond Electech Co., Ltd. , Defond Components Limited
Inventor： Cheng Chen Nieh , Chiu Keung Loong , Wai Man Wong
CPC classification number: G01D5/145 , G01R33/0076 , G01R33/072 , G01R33/091 , H02P6/08 , H02P6/30 , B25F5/001
Abstract: A control assembly for controlling a speed or torque of operation of an electric device includes a control assembly housing, a magnetic sensor, a magnetic element; and an actuator. The actuator moves relative to the control assembly and, responsive to that movement, the magnetic sensor and magnetic element are moved relative to each other between a first position and a second position so that the magnetic sensor senses a first magnetic field reading when in the first position and senses a second magnetic field reading when in the second position. A control module is operably connected to the magnetic sensor and configured for controlling the electric device, and a magnetic shielding element is positioned within the control assembly housing to alleviate a magnetic signal source external to the control assembly from interfering with the sensing by the magnetic sensor.
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公开(公告)号：US20230219207A1
公开(公告)日：2023-07-13
申请号：US18119054
申请日：2023-03-08
Applicant: DEFOND ELECTECH CO., LTD , DEFOND COMPONENTS LIMITED
Inventor： Wai Man Wong , Chiu Keung Loong
Abstract: A control assembly for use in controlling a speed of operation of an electric device, the control assembly including: a control assembly housing; a magnetic sensor; a magnetic element; an actuator that is configured for movement relative to the control assembly housing wherein responsive to said movement of the actuator relative to the control assembly housing, the magnetic sensor and magnetic element move relative to each other between at least one of a first position and a second position such that the magnetic sensor senses a first magnetic field reading when in the first position and senses a second magnetic field reading when in the second position; and, a control module operably connected to the magnetic sensor and configured for controlling the electric device to operate in at least one of a first speed and a second speed by reference to an output of the magnetic sensor indicative of the sensed first magnetic field reading and the second magnetic field reading respectively.
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Patent Agency Ranking
公开(公告)号：US09756740B2
公开(公告)日：2017-09-05
申请号：US14619167
申请日：2015-02-11
Applicant: Defond Components Limited
Inventor： Chiu Keung Loong
CPC classification number: H05K5/0052 , H01H1/5805 , H01H9/06 , H01H9/52 , H01H9/547 , H05K7/2039
Abstract: An electrical switch assembly for an electrical appliance having an electrical load such as a motor, includes a housing with an opening, switch terminals, and an on/off mechanical switching module. The switch assembly includes an electronic control module operable with a semiconductor switching device to control operation of the load, and a heat sink in thermal contact with the switching device for dissipating heat. The heat sink is electrically conductive and is in electrical circuit connection with a first terminal of the switching device and one of the switch terminals. The heat sink closes the opening and forms part of the housing.
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公开(公告)号：US11919137B2
公开(公告)日：2024-03-05
申请号：US18119054
申请日：2023-03-08
Applicant: DEFOND ELECTECH CO., LTD , DEFOND COMPONENTS LIMITED
Inventor： Wai Man Wong , Chiu Keung Loong
Abstract: A control assembly for use in controlling a speed of operation of an electric device, the control assembly including: a control assembly housing; a magnetic sensor; a magnetic element; an actuator that is configured for movement relative to the control assembly housing wherein responsive to said movement of the actuator relative to the control assembly housing, the magnetic sensor and magnetic element move relative to each other between at least one of a first position and a second position such that the magnetic sensor senses a first magnetic field reading when in the first position and senses a second magnetic field reading when in the second position; and, a control module operably connected to the magnetic sensor and configured for controlling the electric device to operate in at least one of a first speed and a second speed by reference to an output of the magnetic sensor indicative of the sensed first magnetic field reading and the second magnetic field reading respectively.
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公开(公告)号：US11623335B2
公开(公告)日：2023-04-11
申请号：US16180922
申请日：2018-11-05
Applicant: DEFOND ELECTECH CO., LTD , DEFOND COMPONENTS LIMITED
Inventor： Wai Man Wong , Chiu Keung Loong
Abstract: A control assembly for use in controlling a speed of operation of an electric device, the control assembly including: a control assembly housing; a magnetic sensor; a magnetic element; an actuator that is configured for movement relative to the control assembly housing wherein responsive to said movement of the actuator relative to the control assembly housing, the magnetic sensor and magnetic element move relative to each other between at least one of a first position and a second position such that the magnetic sensor senses a first magnetic field reading when in the first position and senses a second magnetic field reading when in the second position; and, a control module operably connected to the magnetic sensor and configured for controlling the electric device to operate in at least one of a first speed and a second speed by reference to an output of the magnetic sensor indicative of the sensed first magnetic field reading and the second magnetic field reading respectively.
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8.发明授权公开(公告)号：US10964499B2
公开(公告)日：2021-03-30
申请号：US16207397
申请日：2018-12-03
Applicant: Defond Electech Co., Ltd. , Defond Components Limited
Inventor： Chiu Keung Loong
Abstract: A detection circuit module for use with a household appliance door to detect when the door is closed and/or locked, the detection circuit module having a first and a second contact configured for electrical connection with the household appliance door so as to be operable with the household appliance door, the detection circuit module including: a door closing switch arranged electrically in series between the first connecting contact and an actuator; a door locking switch arranged electrically in series between the actuator member and the second connecting contact; and a diode arranged in series with the actuator and the second connecting contact and the diode being arranged electrically in parallel with the door locking switch.
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公开(公告)号：US20150237744A1
公开(公告)日：2015-08-20
申请号：US14619167
申请日：2015-02-11
Applicant: Defond Components Limited
Inventor： Chiu Keung Loong
CPC classification number: H05K5/0052 , H01H1/5805 , H01H9/06 , H01H9/52 , H01H9/547 , H05K7/2039
Abstract: An electrical switch assembly for an electrical appliance having an electrical load such as a motor, includes a housing with an opening, switch terminals, and an on/off mechanical switching module. The switch assembly includes an electronic control module operable with a semiconductor switching device to control operation of the load, and a heat sink in thermal contact with the switching device for dissipating heat. The heat sink is electrically conductive and is in electrical circuit connection with a first terminal of the switching device and one of the switch terminals. The heat sink closes the opening and forms part of the housing.
Abstract translation: 具有诸如电动机等电负载的电器的电气开关组件包括具有开口的壳体，开关端子以及开/关机械开关模块。 开关组件包括可与半导体开关装置一起操作以控制负载的操作的电子控制模块以及与开关装置热接触以散热的散热器。 散热器是导电的并且与开关装置的第一端子和开关端子中的一个处于电路连接。 散热器关闭开口并形成外壳的一部分。
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