# US 12,119,593 B2 · Power plug with leakage current detection interrupter

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- Number: US 12,119,593 B2
- Document ID: US12119593B2
- Status: Granted
- Kind: B2
- Application number: 17/476,236
- Filed: 2021-09-15
- Published: 2023-03-16
- Granted: 2024-10-15
- Earliest claimed: 2021-09-13
- Assignees: Chengli Li
- Applicants: Chengli Li
- Inventors: Chengli Li; Xiaoming Zhang
- Web page: https://patentgrep.com/patent/US12119593B2

## CPC

- H01R 13/713: the switch being a safety switch
- H01R 24/30: with additional earth or shield contacts
- H01R 2103/00: Two poles
- H01R: ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS

## Abstract

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.

## Claims

### Claim 1

A power plug with a leakage current detection interrupter (LCDI), comprising:
a shell, including a lower shell portion and an upper shell portion joined together;
a plurality of input insertion prongs, partially exposed to an exterior of the shell, including a first, a second, and a third insertion prong;
a plurality of output conductors, including a first output conductor which is a hot line conductor, a second output conductor which is a neutral line conductor, a third output conductor which is a ground line conductor, a first shield conductor disposed outside the hot line conductor, and a second shield conductor disposed outside the neutral line conductor;
a movement assembly disposed in the shell and coupled to the plurality of input insertion prongs and the plurality of output conductors, wherein the movement assembly is configured to establish or cut off an electrical connection respectively between the first, second and third input insertion prongs and the first, second and third output conductors;
a male end assembly disposed in the shell, including a first, a second, a third, a fourth and a fifth male terminal, wherein first ends of the first and second male terminals are affixed to the movement assembly and respectively electrically coupled to the first and second insertion prongs via the movement assembly, a first end of the third male terminal is coupled to the third insertion prong, and first ends of the fourth and fifth male terminals area affixed to the movement assembly; and
a female end assembly disposed in the shell, including a first, a second, a third, a fourth and a fifth female terminal, wherein second ends of the first, second and third female terminals are respectively coupled to the first, second and third output conductors, and second ends of the fourth and fifth female terminals are respectively coupled to the first and second shield conductors;
wherein both the male end assembly and the female end assembly are entirely disposed within the shell between the lower shell portion and the upper shell portion, and wherein second ends of the first to fifth male terminals of the male end assembly are respectively inserted into a first ends of the first to fifth female terminals of the female end assembly.

### Claim 2 (depends on 1)

The power plug of claim 1, further comprising a connector disposed in the shell, the connector including affixing components to affix the female end assembly.

### Claim 3 (depends on 2)

The power plug of claim 2, wherein the affixing components include a plurality of holding notches on the connector.

### Claim 4 (depends on 2)

The power plug of claim 2, wherein the affixing components include a plurality of clamps on the connector.

### Claim 5 (depends on 1)

The power plug of claim 1, wherein the upper shell portion includes a first upper shell portion and a second upper shell portion.

### Claim 6 (depends on 1)

The power plug of claim 1, further comprising a reset switch or a test switch or both a reset switch and a test switch, coupled to the movement assembly.

### Claim 7 (depends on 1)

The power plug of claim 1, wherein the shell includes a plurality of portions fixedly joined to each other to form one body.