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公开(公告)号：US20210239770A1
公开(公告)日：2021-08-05
申请号：US17238693
申请日：2021-04-23
Applicant: Chengli LI
Inventor： Chengli LI , Shengyun NIE
Abstract: A power supply cord for use with a leakage current detection and interruption device, including at least two power supply lines, at least two insulating layers respectively covering the at least two power supply lines, at least two shield lines respectively covering the at least two insulating layers, and at least one insulating structure covering at least one of the at least two shield lines to electrically insulate the at least two shield lines from each other. By providing the insulating structure outside of at least one of the shield lines, the shield lines of different power supply lines are independent of each other, so that the shield lines can better detect leakage currents in the power supply lines.
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公开(公告)号：US20210225606A1
公开(公告)日：2021-07-22
申请号：US16789283
申请日：2020-02-12
Applicant: Chengli LI
Inventor： Chengli LI , Xiaoming ZHANG , Shengyun NIE
IPC: H01H71/24 , H01H71/32 , H01H71/12 , H01H71/52 , H01H83/04 , H01H83/20 , H01H73/44 , H01H73/20 , H01H73/08 , H02H3/16
Abstract: A leakage current protection device includes a shell and a core assembly disposed within the shell. The core assembly includes a control circuit board, a trip assembly disposed on the control circuit board, and an input end and an output end connected to the trip assembly. The trip assembly includes a first driving member movable linearly in a first direction and a second driving member pivotable around a pivotal support axis, where the first and second driving members are mechanically engaged with each other and move together with each other. The second driving member has two driving points configured to move in a second direction as the second driving member pivots, the second direction being non-parallel to the first direction. Movements of the two driving points of the second driving member in the second direction are operable to electrically connect or disconnect the input and output ends.
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公开(公告)号：US20210075211A1
公开(公告)日：2021-03-11
申请号：US16564857
申请日：2019-09-09
Applicant: Chengli LI
Inventor： Chengli LI , Long CHEN , Shengyun NIE
Abstract: A relay-type leakage current protection device includes a switch circuit, a relay circuit, a leakage current detection circuit, a self-test circuit, and a drive circuit. The switch circuit controls electrical connection between input and output ends of the power supply. The relay circuit is coupled to the input end and controls the open/close state of the switch circuit. The leakage current detection circuit detects a leakage current on the power supply lines. The self-test circuit is coupled to the power supply lines and the leakage current detection circuit, to generate a self-test pulse signal which simulates the leakage current and to detect a fault condition in the leakage current detection circuit. The drive circuit drives the relay circuit in response to receiving a leakage current signal from the leakage current detection circuit or a fault signal from the self-test circuit.
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公开(公告)号：US20180166242A1
公开(公告)日：2018-06-14
申请号：US15592674
申请日：2017-05-11
Applicant: Chengli LI
Inventor： Chengli LI , Fei LIN
CPC classification number: H01H71/10 , H01H71/0264 , H01H71/04 , H01H71/08 , H01H71/58 , H01H73/44 , H01H83/04 , H01H83/144 , H01R13/7135 , H02H3/334
Abstract: A leakage current protection device includes an electrical and mechanical assembly which includes: a circuit board; moving contact plates; an auxiliary switch; a reset shaft, having a hook in its lower portion, a bottom end of the reset shaft being set against one end of a reset spring, another end of the reset spring being set against the base; a disconnect mechanism, having a hook at its upper portion to engage with the hook of the reset shaft in a vertical direction; a trip coil and a trip plunger disposed on a side of the disconnect mechanism, where the disconnect mechanism is driven by the trip plunger to move horizontally. The disconnect mechanism further includes a pushing end that controls the auxiliary switch and lifting levers that control the moving contact plates.
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公开(公告)号：US20150155698A1
公开(公告)日：2015-06-04
申请号：US14306686
申请日：2014-06-17
Applicant: Chengli Li
Inventor： Chengli LI , Guolan YUE
IPC: H02H1/00
CPC classification number: H02H1/0015 , H02H3/044
Abstract: An arc fault detection circuit for an arc fault circuit interrupter (AFCI). The arc fault detection circuit includes an arc detecting circuit for detecting an arc fault in one or more power supply lines and outputting a detected signal, an arc filtering circuit electrically coupled to an output terminal of the arc detecting circuit for removing signal parts unrelated to the arc fault from the detected signal and outputting a filtered half-cycle signal, and an arc processing circuit electrically coupled to an output terminal of the arc filtering circuit for generating, based on the filtered half-cycle signal received, a processed half-cycle signal characterizing the arc fault. The arc fault detection circuit also includes simulated arc testing circuit that has a user-touchable test switch, and an arc oscillator to generate a simulated arc fault signal for testing the arc fault detection circuit or its respective components.
Abstract translation: 一种用于电弧故障断路器（AFCI）的电弧故障检测电路。 电弧故障检测电路包括用于检测一个或多个电源线中的电弧故障并输出检测信号的电弧检测电路，电耦合到电弧检测电路的输出端的电弧滤波电路，用于去除与 并且输出滤波的半周期信号，以及电弧处理电路，其电耦合到所述电弧滤波电路的输出端子，用于基于所接收的经滤波的半周期信号，生成经处理的半周期信号 表征电弧故障。 电弧故障检测电路还包括具有用户触摸测试开关的模拟电弧测试电路和产生用于测试电弧故障检测电路或其相应部件的模拟电弧故障信号的电弧振荡器。
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Patent Agency Ranking
公开(公告)号：US20250007272A1
公开(公告)日：2025-01-02
申请号：US18218189
申请日：2023-07-05
Applicant: Chengli LI
Inventor： Chengli LI , Shengyun NIE
Abstract: A leakage current detection and interruption (LCDI) device includes a leakage current detection module, including first and second leakage current detection lines, a signal line, and at least one resistive element and/or at least one semiconductor element, configured to detect a leakage current signal on the first or second current-carrying line and to generate a leakage fault signal in response thereto. The first and second leakage current detection lines are electrically insulated from each other, and respectively cover one of the first and second current-carrying lines. A point at which the first and second leakage current detection lines are coupled to each other is coupled to the signal line, to form respective current paths with the signal line, for detecting an open circuit fault in the leakage current detection module. The at least one resistive element and/or the at least one semiconductor element is coupled in the current paths.
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47.发明公开公开(公告)号：US20240272238A1
公开(公告)日：2024-08-15
申请号：US18349137
申请日：2023-07-08
Applicant: Chengli LI
Inventor： Chengli LI , Long CHEN
Abstract: A leakage current detection and interruption (LCDI) device includes a switch module for controlling an electrical connection between input and output ends of power supply lines; a leakage current detection module for generating a leakage fault signal when detecting a leakage current on the power supply lines; a drive module coupled to the leakage current detection module and the switch module, for controlling the switch module to disconnect or connect the electrical connection; a wireless communication module, coupled to the output end, for wirelessly communicating with a remote control device to allow the remote control device to perform at least one of: controlling the switch module to disconnect or connect the electrical connection, setting parameters of the LCDI device, and obtaining electrical information and/or fault information of the LCDI device. The wireless communication module may be further coupled to the drive module and/or the leakage current detection module.
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公开(公告)号：US20240258735A1
公开(公告)日：2024-08-01
申请号：US18170304
申请日：2023-02-16
Applicant: Chengli LI
Inventor： Chengli LI , Xiaoming ZHANG
IPC: H01R13/453
CPC classification number: H01R13/4534
Abstract: A safety shield assembly for a power receptacle, including: a slider frame having first and second openings with shapes corresponding to socket holes of the power receptacle; a first slider block disposed in the slider frame, having a first driving portion and a first blocking portion which corresponds in position to the second opening; a second slider block disposed in the slider frame, having a second driving portion and a second blocking portion which corresponds in position to the first opening; and a resilient member disposed between the first and second slider blocks and configured to urge the slider blocks to move relative to each other in the slider frame, to switch between a first state of the safety shield assembly where the first and second openings are respectively covered by the second and first blocking portions and a second state where the first and second openings are exposed.
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公开(公告)号：US20230361514A1
公开(公告)日：2023-11-09
申请号：US17740098
申请日：2022-05-09
Applicant: Chengli LI
Inventor： Chengli LI , Xiaoming ZHANG , Fei LIN
IPC: H01R13/713 , H01R13/717
CPC classification number: H01R13/713 , H01R13/7175
Abstract: A power plug includes a shell, input insertion plates, output power lines, a push button on the shell, and a trip assembly inside the shell for controlling electrical coupling between the input insertion plates and output power lines. The trip assembly includes a light emitting element, electrical coupling terminals, and a drive member mechanically coupled to the push button and configured to, in response to a pressing of the push button, control electrical coupling of the electrical coupling terminals, which in turn controls the electrical coupling between the input insertion plates and output power lines. The drive member includes a reflective portion that reflects a part of the light from the light emitting element to the push button as an indicator light. The dual function drive member that accomplishes both mechanical coupling and light transmission reduces the number of components. A device with an electrical control circuit is also disclosed.
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50.发明公开公开(公告)号：US20230352885A1
公开(公告)日：2023-11-02
申请号：US17740092
申请日：2022-05-09
Applicant: Chengli LI
Inventor： Chengli LI , Xiaoming ZHANG , Fei LIN
CPC classification number: H01R13/665 , H01R24/28 , H02H3/162
Abstract: A leakage current detection interrupter (LCDI) device for an electrical appliance includes a shell and a trip assembly inside the shell. The shell includes an upper cover and a base cover joined together, and either the upper cover or the base cover includes a first cover and a removable second cover. The second cover spatially corresponds to a tail portion of the trip assembly; when it is removed, the tail portion is expose to allow a power cord to be connected to the LCDI device. By using a removable second cover, the cord can be conveniently assembled with the LCDI device when the LCDI device is installed on the electrical appliance, allowing the LCDI to be shipped without the cord. This can reduce the packed size of the LCDI device for easier shipping and storage, as well as lowering cost. It also makes the LCDI device more versatile.
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