公开(公告)号：US11949193B2

公开(公告)日：2024-04-02

申请号：US17368813

申请日：2021-07-06

Applicant: Chengli Li

Inventor： Chengli Li ,  Xiaoming Zhang ,  Shengyun Nie

IPC: H01R13/717 ,  H01R13/66

CPC classification number: H01R13/7175 ,  H01R13/6683 ,  H01R13/717

Abstract: A leakage current protection device with an illumination function, including a shell, a movement assembly in the shell, power input and output assemblies coupled to the movement assembly, and an illumination assembly disposed inside the shell, which includes: an illumination control board electrically coupled to the power input or output assembly; a sensing unit coupled to the illumination control board and configured to sense an ambient condition outside the shell to generate a sensing output signal; a light emitting unit coupled to the control board, and controlled by the control board to turn on or off in response to the sensing output signal; and a light guide unit, formed by an operating element partially protruding out of the shell and disposed adjacent the light emitting unit, configured to guide the illumination light emitted by the light emitting unit out of the shell. The device is convenient to use and compact.

公开(公告)号：US11808822B2

公开(公告)日：2023-11-07

申请号：US17472404

申请日：2021-09-10

Applicant: Chengli Li

Inventor： Chengli Li ,  Xiaoming Zhang ,  Zenghui Lv

IPC: G01R31/52 ,  H02H3/33 ,  H02H3/08 ,  H02H3/16

CPC classification number: G01R31/52 ,  H02H3/08 ,  H02H3/16 ,  H02H3/335

Abstract: An LCDI device includes a shell, a movement unit, and a wire bundle assembly. The shell includes a base and an upper cover connected to each other. The movement unit is disposed in the base, and includes at least one connecting conductor. A first end of the wire bundle assembly is disposed in the upper cover and includes at least one shield detection line, where the shield detection line is electrically coupled to the connecting conductor. The shield detection line includes a connecting terminal at the first end of the wire bundle assembly which is configured to received and retain the connecting conductor inserted therein. The structure of the LCDI enables fast and secure assembling of the wire bundle assembly and movement unit, and eliminates the need for internal re-adjustment of the shield detection lines after assembling, which promotes automation of large scale production.

公开(公告)号：US11480628B2

公开(公告)日：2022-10-25

申请号：US17238693

申请日：2021-04-23

Applicant: Chengli Li

Inventor： Chengli Li ,  Shengyun Nie

IPC: G01R31/52 ,  G01R31/58 ,  H02H7/22 ,  H01R13/713 ,  H01B7/32 ,  H02H3/16 ,  H02H5/04

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.

公开(公告)号：US20180109102A1

公开(公告)日：2018-04-19

申请号：US15819353

申请日：2017-11-21

Applicant: Chengli Li

Inventor： Chengli Li ,  Guolan Yue

IPC: H02H3/16 ,  H01H71/24 ,  H01H9/54

CPC classification number: H02H3/16 ,  H01H9/54 ,  H01H71/24 ,  H01H83/04 ,  H01H83/144 ,  H02H3/335

Abstract: A ground fault circuit interrupter device includes a switch module, a ground fault detection module, a self-testing module and a tripping module. The switch module is coupled between the input and output ends to control the electrical connection between the input and output. The ground fault detection module detects whether a leakage current signal exists at the output end. The self-testing module is coupled to the ground fault detection module and periodically generates a self-test pulse signal which simulates the leakage current signal. The tripping module is coupled to the ground fault detection module and the switch module, to control the movement of the switch module. The device includes at least two tripping drive components, which prevents the device from becoming ineffective when the tripping module malfunctions due to long time use or use under high temperatures. This greatly improves safety of the device.

公开(公告)号：US09857448B1

公开(公告)日：2018-01-02

申请号：US15209563

申请日：2016-07-13

Applicant: Chengli Li

Inventor： Chengli Li

IPC: G01R31/02 ,  G08B21/00 ,  G01R35/00

CPC classification number: G01R35/007 ,  G01R31/025

Abstract: A leakage current detection device includes a self-test unit for activating a simulated leakage current signal; a leakage current detection unit for detecting the simulated leakage current signal and the actual leakage current signal, where when at least one of them is present, the leakage current detection unit activates a trigger signal, and when both of them are absent, the leakage current detection unit deactivates the trigger signal; a self-test feedback turnoff unit for detecting the trigger signal, where when the trigger signal is detected, the self-test feedback turnoff unit deactivates the simulated leakage current signal before a predetermined time point; and a power line disconnect unit for detecting the trigger signal after the predetermined time point, and when the trigger signal is detected, it disconnects the power between the power source and the load.

公开(公告)号：US09640968B2

公开(公告)日：2017-05-02

申请号：US14306686

申请日：2014-06-17

Applicant: Chengli Li

Inventor： Chengli Li ,  Guolan Yue

IPC: H02H1/00 ,  H02H3/04

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.

公开(公告)号：US09564718B2

公开(公告)日：2017-02-07

申请号：US14557011

申请日：2014-12-01

Applicant: Chengli Li

Inventor： Chengli Li

IPC: H01R13/713 ,  H01R24/30 ,  H01R24/78 ,  H01R25/00 ,  H01R103/00

CPC classification number: H01R13/7137 ,  H01R24/30 ,  H01R24/78 ,  H01R25/006 ,  H01R2103/00

Abstract: An electrical power plug or receptacle with an over-temperature protection function, including a reset switch operated by a solenoid that electrically connects and disconnects the input side and output side electrical lines, and an temperature-controlled switch disposed in thermal contact with one or more electrical conductor plates on the input or output side. The temperature-controlled switch is connected in series with the solenoid between the output side phase and neutral lines. When the temperature of the temperature-controlled switch is within a normal range, the switch is open and does not form a current path with the solenoid. When the temperature is at or above a threshold temperature, the temperature-controlled switch is closed, a current flows through the switch and the solenoid between the output side phase and neutral lines, and the solenoid operates the reset switch to disconnect the input side from the output side.

Abstract translation: 一种具有过温保护功能的电源插头或插座，包括由电磁连接和断开输入侧和输出侧电线的螺线管操作的复位开关以及与一个或多个热电接触设置的温度控制开关 输入或输出端的导电板。 温控开关与输出侧相和中性线之间的螺线管串联。 当温度控制开关的温度在正常范围内时，开关断开，不会与电磁线圈形成电流通路。 当温度等于或高于阈值温度时，温度控制开关闭合，电流流过开关和输出侧相与中性线之间的螺线管，螺线管操作复位开关，使输入侧与 输出端。

公开(公告)号：US08054590B2

公开(公告)日：2011-11-08

申请号：US12098540

申请日：2008-04-07

Applicant: Chengli Li ,  Guolan Yue

Inventor： Chengli Li ,  Guolan Yue

IPC: H02H3/00 ,  H02H9/08

CPC classification number: H01H83/04

Abstract: A GFCI device with circuit condition detection function includes a leakage current detection circuit, a disconnect mechanism, a reset mechanism, a circuit condition detection and control circuit, and a selection switch. The disconnect mechanism includes a first SCR controlled by the leakage current detection circuit. The circuit condition detection and control circuit includes a first control circuit and a second control circuit. When the first control circuit is connected to an anode of the first SCR by the selection switch, it provides an intermittent simulated leakage current to the leakage current detection circuit, and the leakage current detection circuit provides a trigger signal for a control gate of the first SCR, so that the first control circuit generates an intermittent simulated leakage current. When the leakage current detection circuit is not operational to generate the trigger signal, the first control circuit generates a control signal to disable the GFCI device.

Abstract translation: 具有电路状态检测功能的GFCI装置包括泄漏电流检测电路，断开机构，复位机构，电路状态检测和控制电路以及选择开关。 断开机构包括由泄漏电流检测电路控制的第一SCR。 电路状态检测和控制电路包括第一控制电路和第二控制电路。 当第一控制电路通过选择开关连接到第一SCR的阳极时，其向泄漏电流检测电路提供间歇的模拟泄漏电流，并且漏电流检测电路为第一控制电路的控制栅极提供触发信号 SCR，使得第一控制电路产生间歇的模拟漏电流。 当泄漏电流检测电路不工作以产生触发信号时，第一控制电路产生禁止GFCI器件的控制信号。

公开(公告)号：US07701680B2

公开(公告)日：2010-04-20

申请号：US11758132

申请日：2007-06-05

Applicant: Chengli Li ,  Long Zhang

Inventor： Chengli Li ,  Long Zhang

IPC: H02H3/00

CPC classification number: H01H83/04

Abstract: An improved ground-fault circuit interrupter (GFCI) device has a moveable lock plate controlled by a relay to block a hole under the reset guiding member to prevent reset of the device. The moveable lock plate blocks the hole and prevents reset when the relay is not energized, and expose the hole to allow reset when the relay is energized. The relay is powered by a power supply circuit which is connected in series with a solenoid across the input side of the GFCI. The solenoid is controlled by a control circuit, and causes a disconnecting assembly to disconnect the input and output sides of the GFCI when a leakage current is detected. If the solenoid malfunctions, or if the GFCI device is reversely wired, the relay is not energized and the device cannot be reset.

Abstract translation: 改进的接地故障断路器（GFCI）装置具有由继电器控制的可移动锁定板，以阻挡复位引导构件下方的孔，以防止装置复位。 当继电器通电时，可移动的锁定板阻挡孔并防止复位，并且当继电器通电时，露出孔以允许复位。 继电器由与GFCI的输入侧的螺线管串联连接的电源电路供电。 当检测到漏电流时，螺线管由控制电路控制，并使断开组件断开GFCI的输入和输出侧。 如果螺线管发生故障，或者如果GFCI设备反向连接，则继电器未通电，设备无法复位。

公开(公告)号：US06442007B1

公开(公告)日：2002-08-27

申请号：US09502011

申请日：2000-02-11

Applicant: Chengli Li

Inventor： Chengli Li

IPC: H02H908

CPC classification number: H01H73/14 ,  H01H71/04 ,  H02H3/338

Abstract: The present invention is a simple, low cost, and easy-to-operate ground fault circuit interrupter (GFCI) device equipped with a display circuit for displaying whether the power-input terminals are correctly connected. The device consists of a cover plate and a main body, which includes power-input terminals, plug-in sockets, power-output terminals, a reset button, a simulated earth leakage test button, a current monitoring circuit, and a display circuit. The display circuit is comprised of a commutation diode, a current-limiting resistor, and a variable-color display lamp. Two control legs of the variable-color display lamp are connected with a power-input terminal and a power-output terminal, respectively. One of the control legs and the common leg of the variable-color display lamp are connected in series with a current limiting resistor and commutation diode to form a loop, and are connected in parallel to one side of the power-input terminals.

Abstract translation: 本发明是一种简单，低成本且易于操作的接地故障电路断续器（GFCI）装置，其配备有用于显示电力输入端子是否正确连接的显示电路。 该装置包括盖板和主体，其包括电源输入端子，插入式插座，电力输出端子，复位按钮，模拟地漏测试按钮，电流监控电路和显示电路。 显示电路由换向二极管，限流电阻和可变色显示灯构成。 可变色显示灯的两个控制腿分别与电源输入端子和电源输出端子相连。 可变色显示灯的控制腿和公共支腿中的一个与限流电阻和换向二极管串联连接以形成环路，并联并联到电源输入端子的一侧。