公开(公告)号：US10770823B1

公开(公告)日：2020-09-08

申请号：US16446107

申请日：2019-06-19

Applicant: Chengli Li

Inventor： Chengli Li ,  Xiaoming Zhang ,  Shengyun Nie

IPC: H01R13/44 ,  H01R13/453 ,  H01R25/00

Abstract: A safety shield assembly for a power receptacle and a power receptacle incorporating the same. The safety shield assembly includes a frame and a sliding block and a resilient member disposed in the frame. The frame has multiple openings corresponding to multiple socket holes of the power receptacle, a position limiting member configured to abut the sliding block, and a balancing support member. In its initial state, the resilient member urges the sliding block to a closed position to covers the openings. The sliding block has two inclined surfaces. When an inserted object pushes on only one of the two inclined surfaces, the position limiting member limits the sliding motion of the sliding block; when two inserted objects simultaneously push on both inclined surfaces, the sliding block is balanced on the balancing support member and is able to slides along the frame to expose the openings.

公开(公告)号：US10571526B2

公开(公告)日：2020-02-25

申请号：US15878242

申请日：2018-01-23

Applicant: Chengli Li

Inventor： Chengli Li ,  Guolan Yue

IPC: H02H3/00 ,  G01R31/50 ,  H02H3/33 ,  H01H71/12 ,  H02H3/10 ,  G01R35/00 ,  G01R31/28 ,  H01H71/04 ,  H01H83/04 ,  H01H83/14

Abstract: A ground fault circuit interrupter device includes a switch module having a reset switch, a control switch mechanically linked to the reset switch, a ground fault detection module, a self-testing module and a tripping module. The switch module controls the electrical connection between the input and output ends of the device. The ground fault detection module detects a leakage current signal 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 electrically coupled to the ground fault detection module and mechanically coupled to the switch module and the control switch, to control the movement of the switch module and the control switch. The control switch, which opens and closes at the same time as the reset switch, controls the power supply to the self-testing module.

公开(公告)号：US09547047B2

公开(公告)日：2017-01-17

申请号：US14614334

申请日：2015-02-04

Applicant: Chengli Li

Inventor： Chengli Li ,  Guolan Yue

IPC: G01R35/00 ,  H02H3/33 ,  G01R31/42

CPC classification number: G01R31/42 ,  G01R31/025 ,  G01R35/00 ,  H02H3/335

Abstract: A leakage current detection device coupled to AC power supply wires carrying an AC signal, which includes: a leakage current detection circuit including a leakage current detector, the leakage current detection circuit operating during first half-cycles among positive and negative half-cycles of the AC signal to detect a leakage current of the power supply wires and to disconnect the power supply wires from an output side when a leakage current exceeding a first threshold value is detected; and a self-detecting circuit coupled to the leakage current detection circuit, operating during second half-cycles among the positive and negative half-cycles of the AC signal to test whether the leakage current detection circuit is functioning normally.

Abstract translation: 一种泄漏电流检测装置，其耦合到承载AC信号的AC电源线，其包括：漏电流检测电路，包括泄漏电流检测器，所述漏电流检测电路在所述漏电流检测电路的正半周期和负半周期期间 AC信号，当检测到超过第一阈值的泄漏电流时，检测电源线的漏电流并断开电源线与输出侧的连接; 以及耦合到泄漏电流检测电路的自检测电路，在AC信号的正半周期和负半周期期间的第二半周期期间进行操作，以测试泄漏电流检测电路是否正常工作。

公开(公告)号：US09312681B2

公开(公告)日：2016-04-12

申请号：US14497668

申请日：2014-09-26

Applicant: Chengli Li

Inventor： Chengli Li ,  Guolan Yue

IPC: H02H3/00 ,  H02H9/08 ,  H02H5/04 ,  H02H3/16

CPC classification number: H02H5/047 ,  G01R31/025 ,  H02H3/08 ,  H02H3/105 ,  H02H3/16 ,  H02H3/162 ,  H02H3/334 ,  H02H5/04

Abstract: A power cord having a circuit interrupter such as a leakage current detection interrupter (LCDI) or arc fault circuit interrupter (AFCI), with a detection signal conductor wire in addition to the current carrying wires between the source and the load, and a temperature controlled switch coupled to the detection signal conductor wire on the load side. The temperature controlled switch is affixed to a device under measurement which is associated with the load, and changes its open or closed state when the device overheats. This in turn changes the state of the current flowing in the detection signal conductor wire. In response thereto, the circuit interrupter, which is coupled to the detection signal conductor wire on the source end, interrupts the power supply to the load.

Abstract translation: 具有诸如泄漏电流检测中断器（LCDI）或电弧故障电路断续器（AFCI）等电路断流器的电源线，除了源极和负载之间的电流承载线之外，还具有检测信号导体线，以及温度控制 开关耦合到负载侧的检测信号导线。 温度控制开关固定在与负载相关联的测量设备上，当设备过热时，它会改变其打开或关闭状态。 这又改变了在检测信号导线中流动的电流的状态。 响应于此，与源极上的检测信号导体线耦合的断路器中断负载的电源。

公开(公告)号：US07672098B2

公开(公告)日：2010-03-02

申请号：US11739665

申请日：2007-04-24

Applicant: Long Zhang ,  Chengli Li

Inventor： Long Zhang ,  Chengli Li

IPC: H02H9/08 ,  H01L23/28

CPC classification number: H01R13/665 ,  H01R13/6691 ,  Y10T29/5313

Abstract: A power plug includes a base, an upper cover attached to the base, a base-side cover adjacent the base and removeably attached to the upper cover, an output cord, a leakage current detection and protection circuit for detecting a leakage current in the output cord, and an electrical connection mechanism for electrically connecting and disconnecting an input side and an output of the power plug. The leakage current detection and protection circuit and the electrical connection mechanism are attached to the base and disposed substantially within a space enclosed by the base and the upper cover. A plurality of connecting ends of the circuit extend from the space enclosed by the base and the upper cover into a space enclosed by the base-side cover and the upper cover. Wires of the output cord are connected to the connecting ends, respectively.

Abstract translation: 电源插头包括基座，附接到基座的上盖，邻近底座的基座盖和可拆卸地附接到上盖，输出线，漏电流检测和保护电路，用于检测输出中的漏电流 以及用于电连接和断开电源插头的输入侧和输出的电连接机构。 泄漏电流检测和保护电路和电连接机构附接到基座并且基本上设置在由基座和上盖封闭的空间内。 电路的多个连接端从由基座和上盖封闭的空间延伸到被基座盖和上盖封闭的空间中。 输出线的电线分别连接到连接端。

公开(公告)号：US20080112099A1

公开(公告)日：2008-05-15

申请号：US11758132

申请日：2007-06-05

Applicant: Chengli Li ,  Long Zhang

Inventor： Chengli Li ,  Long Zhang

IPC: H02H3/00 ,  H01H73/00

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：US20080099227A1

公开(公告)日：2008-05-01

申请号：US11739677

申请日：2007-04-24

Applicant: Long Zhang ,  Chengli Li

Inventor： Long Zhang ,  Chengli Li

IPC: H01B7/00

CPC classification number: H01B7/328

Abstract: A power cord with leakage current detection function includes three copper wires for carrying power and at least one leakage current detection conductor for detecting leakage current. Each copper wire is surrounded by an insulating layer. At least two of the insulating layers are each surrounded by a metal conductive layer. The leakage current detection conductor is adjacent and in electrical contact with the two metal conductive layers. An outer insulating layer encloses the three wires and the leakage current detection conductor. The metal conductive layers are made of a thin copper foil, tin foil, aluminum foil, or conductive rubber. The leakage current detection conductor may be formed of copper wires or aluminum wires. Such a power cord provides low cost and reliability, and can quickly and accurately detect leakage current in the cord.

Abstract translation: 具有泄漏电流检测功能的电源线包括用于承载电力的三根铜线和用于检测泄漏电流的至少一个漏电流检测导体。 每个铜线被绝缘层包围。 至少两个绝缘层被金属导电层包围。 泄漏电流检测导体与两个金属导电层相邻并且电接触。 外部绝缘层包围三条导线和漏电流检测导体。 金属导电层由薄铜箔，锡箔，铝箔或导电橡胶制成。 泄漏电流检测导体可以由铜线或铝线形成。 这样的电源线提供低成本和可靠性，并可以快速准确地检测电线中的漏电流。