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71. 发明授权

US12119593B2 Power plug with leakage current detection interrupter 有权
公开(公告)号：US12119593B2
公开(公告)日：2024-10-15
申请号：US17476236
申请日：2021-09-15
申请人： Chengli Li
发明人： Chengli Li , Xiaoming Zhang
IPC分类号： H01R13/70 , H01R13/713 , H01R24/30 , H01R103/00
CPC分类号： H01R13/713 , H01R24/30 , H01R2103/00
摘要： A power plug with LCDI includes a shell, multiple input insertion prongs partially exposed to an exterior of the shell, a movement assembly disposed in the shell and coupled to the multiple input insertion prongs, a male end assembly and a female end assembly both disposed in the shell, and multiple output conductors. A first end of the male end assembly is connected to the movement assembly and electrically coupled to the multiple input insertion prongs via the movement assembly; a second end of the male end assembly is inserted into a first end of the female end assembly; a second end of the female end assembly is electrically coupled to the multiple output conductors; and the movement assembly is configured to establish or cut off an electrical connection between the multiple input insertion prongs and the multiple output conductors. This power plug improves efficiency of assembly.

72. 发明授权

US12046893B2 Leakage current detection and interruption device for power cord and related electrical connectors and electrical appliances 有权
公开(公告)号：US12046893B2
公开(公告)日：2024-07-23
申请号：US17840233
申请日：2022-06-14
申请人： Chengli Li
发明人： Chengli Li , Long Chen
IPC分类号： H02H3/16 , G01R31/52
CPC分类号： H02H3/16 , G01R31/52
摘要： A leakage current detection and interruption device for power cord includes a switch module, a leakage current detection module, an open circuit detection module, and a trigger module. The switch module controls the electrical connection between input and output ends of the power cord. The leakage current detection module has two leakage current detection lines to collect leakage current on the power supply lines of the power cord. The open circuit detection module is coupled to the leakage current detection module, and generates an open-circuit fault signal when an open circuit exists in at least one of the two leakage current detection lines. The trigger module is coupled to the switch module and the open circuit detection module, and receives a leakage fault signal and/or the open-circuit fault signal, and in response thereto, drives the switch module to disconnect the electrical connection between the input and output ends.

73. 发明授权

US12027805B2 Power plug and control circuit with indicator light 有权
公开(公告)号：US12027805B2
公开(公告)日：2024-07-02
申请号：US17740098
申请日：2022-05-09
申请人： Chengli Li
发明人： Chengli Li , Xiaoming Zhang , Fei Lin
IPC分类号： H01R13/71 , H01R13/713 , H01R13/717
CPC分类号： H01R13/713 , H01R13/7175
摘要： 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.

74. 发明授权

US12010804B2 Power receptacle 有权
公开(公告)号：US12010804B2
公开(公告)日：2024-06-11
申请号：US17808953
申请日：2022-06-24
申请人： Chengli Li
发明人： Lei Qian , Xiaoliang Bao
IPC分类号： H05K5/02 , H05K5/03
CPC分类号： H05K5/0213 , H05K5/03
摘要： A power receptacle for supplying power to a plug inserted therein includes a shell, which includes a cover assembly having at least one socket on its exterior adapted to receive the plug, and a base cooperating with and coupled to the cover assembly; an electrical connection assembly, disposed within the shell, and configured to electrically connect to the plug which is inserted into the socket; a PCB (printed circuit board) assembly, disposed within the shell, including a power processing circuit, and electrically coupled to the electrical connection assembly; and a grounding frame, formed of metal, and partially disposed between the electrical connection assembly and the PCB assembly. The structure improves heat dissipation from interior components of the receptacle and its electromagnetic compatibility.

75. 发明授权

US11953365B2 Switching device and a liquid level detection apparatus employing the switching device 有权
公开(公告)号：US11953365B2
公开(公告)日：2024-04-09
申请号：US17512414
申请日：2021-10-27
申请人： Chengli Li
发明人： Erjian Song , Hanqin Zhou
IPC分类号： H01H35/18 , G01F23/36 , G01F23/44
CPC分类号： G01F23/36 , G01F23/44 , H01H35/18
摘要： A switching device includes a first enclosure containing a switch, a rod-shaped second enclosure having a second end connected to the first enclosure, a detector unit in the second enclosure, and a float disposed around the second enclosure and capable of moving along it. As the float moves from the first end of the second enclosure toward the second end, when the float enters a first position range, a first position sensor senses the float and transmits a first sensing signal to a detection circuit; when the float enters a second position range, a second position sensor senses the float and transmits a second sensing signal to the detection circuit. The detection circuit close a switch in response to the second sensing signal to turn on an external appliance. The switching device is flexible, reliable, and inexpensive to produce.

76. 发明公开

US20240045129A1 ELECTRICAL CONVERTER PLUG WITH INDICATOR LIGHT, AND CONVERTER PLUG ASSEMBLY WITH POSITIONING BRACKET 审中-公开
公开(公告)号：US20240045129A1
公开(公告)日：2024-02-08
申请号：US17937051
申请日：2022-09-30
申请人： Chengli Li
发明人： Junwu ZHOU , Quanguo FU
IPC分类号： F21V8/00 , H01R31/06 , H01R13/502 , H01R13/621
CPC分类号： G02B6/0008 , H01R31/065 , H01R13/502 , H01R13/621
摘要： An indicator light, an electrical converter plug, a positioning bracket, and an electrical converter plug assembly. The indicator light for indicating a working status of the electrical device includes a light guide rod having opposite first and second ends, and a light shade, disposed at the first end of the light guide rod and including multiple indicating surfaces facing different directions. When the indicator light is installed on the electrical device, the second end of the light guide rod faces a light source inside the electrical device, and light from the light source is guided by the light guide rod to the light shade and emitted in the multiple directions by the light shade, allowing the user to observe the light from multiple angles. Further, a positioning bracket affixes the electrical converter plug to the power outlet socket, ensuring secure contact, prolonging product life, and eliminating safety threat.

77. 发明公开

US20240044998A1 LEAKAGE CURRENT DETECTION AND INTERRUPTION DEVICE FOR POWER CORD AND RELATED ELECTRICAL CONNECTORS AND ELECTRICAL APPLIANCES 审中-公开
公开(公告)号：US20240044998A1
公开(公告)日：2024-02-08
申请号：US17819283
申请日：2022-08-11
申请人： Chengli LI
发明人： Chengli LI , Long CHEN , Shengyun NIE
IPC分类号： G01R31/52 , H02H1/00 , H02H3/16
CPC分类号： G01R31/52 , H02H1/0007 , H02H3/16
摘要： A leakage current detection and interruption (LCDI) device includes a switch module to control electrical connection of first and second power supply lines between input and output ends, a leakage current detection module including first and second leakage current detection lines respectively covering the first and second power supply lines to detect leakage currents thereon, a detection monitoring module coupled to the leakage current detection module and the first and second power supply lines to generate an open circuit detection signal in response to an open circuit condition in the first or second leakage current detection line, and a test module including a normally closed test switch coupled to the first or second leakage current detection line, wherein when the test switch is manually operated to open, the switch module disconnects the first and second power supply lines between the input and output ends.

78. 发明授权

US11536777B2 Intelligent leakage current detection and interruption device for power cord 有权
公开(公告)号：US11536777B2
公开(公告)日：2022-12-27
申请号：US17486107
申请日：2021-09-27
申请人： Chengli Li
发明人： Chengli Li , Shengyun Nie
IPC分类号： G01R31/52 , H01B7/32 , G01R31/58
摘要： A power cord for a leakage current detection and interruption device including two insulated power supply lines, two leakage current detection lines for detecting a leakage current on the power supply lines, and two conductor wires. The two leakage current detection lines and the two conductor wires are electrically insulated from each other along the length of the power cord but are electrically connected in series to form a detection current path of a leakage current detection module. The leakage current detection and interruption device further includes a detection monitoring module, coupled in series to the detection current path, for detecting an open circuit condition in the detection current path. The device further includes a switch module and a drive module, which can cut off power supply in response to a detected leakage current or open circuit condition in the detection current path.

79. 发明授权

US11532908B1 Power receptacle with protective cover 有权
公开(公告)号：US11532908B1
公开(公告)日：2022-12-20
申请号：US17391327
申请日：2021-08-02
申请人： Chengli Li
发明人： Shi Qiu , Lei Qian
IPC分类号： H01R13/447 , H01R13/52 , H02G3/14 , H01R27/02
摘要： The present invention provides a power receptacle with protective functions, which includes a base assembly, a grounding assembly coupled to the base assembly, a first faceplate coupled to a top of the base assembly, and a cover assembly. The first faceplate includes at least one USB (Universal Serial Bus) interface slot electrically coupled to the base assembly. The cover assembly is removably coupled to the first faceplate and configured to cover the USB interface slot. The power receptacle can prevent dust and other objects from entering the slots, thereby ensuring the safety of the receptacle and prolong its life.

80. 发明授权

US11476612B1 Power receptacle 有权
公开(公告)号：US11476612B1
公开(公告)日：2022-10-18
申请号：US17390313
申请日：2021-07-30
申请人： Chengli Li
发明人： Shi Qiu , Lei Qian
IPC分类号： H01R13/506 , H01R27/02 , H01R13/717
摘要： A power receptacle includes an upper cover, a middle cover, and a base assembly. The middle cover includes an interface group, the interface group including at least one first-type interface, and at least one second-type interface and/or at least one third-type interface. The upper cover includes a matching interface group, the matching interface group including matching interfaces that match at least some of the corresponding interfaces of the interface group. The upper cover and the middle cover are removably attached to each other. Because the base assembly does not need to be changed while the upper cover may be changed based on the user's need, the power receptacle has enhanced applicability, saves cost and can meet user's different needs. Because the upper cover can be changed by the user without requiring a skilled worker, the power receptacle is easy to use.

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