Waterproof electrical connection device

Patent metadata

Field	Value
Publication number	US-12374823-B2
Application number	US-202318203622-A
Country	US
Kind code	B2
Filing date	May 30, 2023
Priority date	Mar 30, 2023
Publication date	Jul 29, 2025
Grant date	Jul 29, 2025

Abstract

A waterproof electrical connection device includes a waterproof casing, a socket assembly, a wire element, and a waterproof plug. The waterproof casing includes a wiring port. An inner surface of the waterproof casing includes an annular step surface facing the wiring port. The wiring port is covered by an end cover. The socket assembly is placed inside the waterproof casing. The waterproof plug is arranged in the wiring port to seal it. The wire element is connected to a connector of the socket assembly and passes through the waterproof casing via the waterproof plug. The waterproof plug has an inner end and an outer end opposite to the inner end. The inner end is arranged toward the socket assembly and includes a longitudinal ring rib. The end cover is fastened to the waterproof casing to press the outer end, so that the longitudinal ring rib presses the annular step surface.

First claim

What is claimed is:

1. A waterproof electrical connection device, comprising:
a waterproof casing, comprising a wiring port, wherein an annular step surface facing the wiring port is disposed on an inner surface of the waterproof casing, and the wiring port is covered by an end cove;
a socket assembly, accommodated in the waterproof casing and comprising a circuit board and a connector disposed on the circuit board;
a wire element, connected to the connector and passing through the waterproof casing via the wiring port; and
a waterproof plug, covering a section of the wire element, wherein the waterproof plug is disposed in the wiring port to seal the wiring port, the waterproof plug comprises an inner end and an outer end opposite to the inner end, the inner end is disposed facing the socket assembly, a longitudinal ring rib is disposed on the inner end, and the waterproof plug covers a connection portion between the wire element and the circuit board,
wherein the end cover is fastened to the waterproof casing along a longitudinal direction of the waterproof plug to press against the outer end to make the longitudinal ring rib press against the annular step surface.

2. The waterproof electrical connection device of claim 1 , wherein the end cover comprises a plurality of frame bodies, the frame bodies are connected to each other to define a through hole, and when the frame bodies are assembled, an inner edge of the through hole presses against an outer surface of the waterproof plug.

3. The waterproof electrical connection device of claim 2 , wherein each of the frame bodies is fastened to the waterproof casing along the longitudinal direction of the waterproof plug.

4. The waterproof electrical connection device of claim 1 , wherein a horizontal ring rib is disposed on an outer surface of the waterproof plug, and the horizontal ring rib abuts against the inner surface of the waterproof casing.

5. The waterproof electrical connection device of claim 1 , wherein the connector comprises a plurality of terminals, the wire element comprises a plurality of wires, each of the wires comprises a soldering end, a wire core and an insulating layer covering the wire core, and in each of the wires, the wire core is exposed from the soldering end and soldered to one of the terminals correspondingly.

6. The waterproof electrical connection device of claim 5 , wherein each of the terminals comprises a soldering groove, the soldering groove comprises a notch and a slope, the slope is a concave curved surface, and the soldering end is accommodated in the notch and supported by the slope.

7. The waterproof electrical connection device of claim 6 , wherein a diameter of the soldering end is greater than a width of the notch.

8. The waterproof electrical connection device of claim 5 , wherein each of the terminals comprises a soldering groove, the soldering groove comprises a notch and a slope, the slope is a flat surface, and the soldering end is accommodated in the notch.

9. The waterproof electrical connection device of claim 8 , wherein a diameter of the soldering end is less than a width of the notch.

10. The waterproof electrical connection device of claim 5 , wherein each of the terminals is an elongated metal sheet.

Assignees

• Jess Link Products Co Ltd

Inventors

• Yang Yun-Chang
• Chen Ming-Wei
• Xu ming-jun
• Liao Wen-Fu

Classifications

• H01R4/023 Primary

  between cables or wires and terminals · CPC title

• H01R13/52 Primary

  Dustproof, splashproof, drip-proof, waterproof, or flameproof cases · CPC title