Method for providing protection for metal joint

Patent metadata

Field	Value
Publication number	US-2025219342-A1
Application number	US-202419001783-A
Country	US
Kind code	A1
Filing date	Dec 26, 2024
Priority date	Dec 28, 2023
Publication date	Jul 3, 2025
Grant date	—

Abstract

A method for providing protection for a metal joint, includes contacting an aluminum metal piece with a copper metal piece to form an electrical connection. The method also includes applying a coating on the surface of a contact between the aluminum metal piece and the copper metal piece to provide protection for the contact. The coating includes one of a polyurethane, an acrylic ester, and a polyolefin elastomer.

First claim

What is claimed is:

1 . A method for providing protection for a metal joint, comprising:
contacting an aluminum metal piece with a copper metal piece to form an electrical connection; and applying a coating on a surface of a contact between the aluminum metal piece and the copper metal piece to provide protection for the contact, the coating includes one of: a polyurethane, an acrylic ester, and a polyolefin elastomer.

2 . The method of claim 1 , wherein the coating is the polyurethane.

3 . The method of claim 1 , wherein the coating is the acrylic ester.

4 . The method of claim 1 , wherein the coating is the polyolefin elastomer.

5 . The method of claim 1 , wherein the aluminum metal piece is an aluminum wire core of an enameled wire, and the copper metal piece is a copper component of a cold-pressed terminal.

6 . The method of claim 1 , further comprising curing the coating at room temperature for 24 hours.

7 . The method of claim 1 , wherein the method further comprises curing the coating at room temperature for 72 hours.

8 . The method of claim 1 , wherein the method further comprises curing the coating at room temperature for a time between 24 hours to 72 hours.

9 . The method of claim 1 , wherein a viscosity of the coating is less than 2000 cps.

10 . The method of claim 1 , wherein a solid content of the coating is less than 50%.

11 . The method of claim 5 , wherein a wire diameter of the enameled wire is 0.24 mm to 0.45 mm.

12 . The method of claim 5 , wherein a wire diameter of the enameled wire is 0.3 mm.

13 . The method of claim 5 , wherein a wire diameter of the enameled wire is 0.4 mm.

14 . The method of claim 1 , wherein the coating includes a solvent.

15 . The method of claim 14 , wherein the solvent is at least one of the following solvents: xylene, ethylbenzene, propyl acetate, butyl acetate, methyl ethyl ketone, toluene, and methylcyclohexane.

16 . The method of claim 2 , wherein the coating includes at least one of the following solvents: xylene, ethylbenzene, propyl acetate, butyl acetate, methyl ethyl ketone, toluene, and methylcyclohexane.

17 . The method of claim 3 , wherein the coating includes at least one of the following solvents: xylene, ethylbenzene, propyl acetate, butyl acetate, methyl ethyl ketone, toluene, and methylcyclohexane.

18 . The method of claim 4 , wherein the coating includes at least one of the following solvents: xylene, ethylbenzene, propyl acetate, butyl acetate, methyl ethyl ketone, toluene, and methylcyclohexane.

Assignees

• Tyco Electronics Shanghai Co Ltd

Inventors

• Zhang Jinyu
• Huang Yongjian (Justin)
• Huang Zhongxi
• Ding Tongbao (Tim)
• Zhang Zhimin

Classifications

• H01R4/18

  by crimping {(H01R4/01, H01R4/2495 take precedence; for coaxial cables H01R9/0518)} · CPC title

• H01R4/62

  Connections between conductors of different materials; Connections between or with aluminium or steel-core aluminium conductors (H01R4/68 takes precedence) · CPC title

• H01R4/70 Primary

  Insulation of connections (end caps H01R4/22) · CPC title

• H01R43/005 Primary

  for making dustproof, splashproof, drip-proof, waterproof, or flameproof connection, coupling, or casing · CPC title