Connector terminal and method for producing connector terminal

Patent metadata

Field	Value
Publication number	US-9590341-B2
Application number	US-201314655233-A
Country	US
Kind code	B2
Filing date	Jul 16, 2013
Priority date	Jan 10, 2013
Publication date	Mar 7, 2017
Grant date	Mar 7, 2017

Abstract

It is aimed to provide a connector terminal including a silver layer on a surface of an electrical contact portion, having a reduced coefficient of friction of a surface and excellent in practicality and productivity and provide a method for producing such a connector terminal. A coating layer made of a silver layer and a film formed by bringing the silver layer into contact with a solution containing thiol and benzotriazole is formed on a contact portion of a connector terminal to be electrically brought into contact with another electrically conductive member. A solvent of this solution is preferably water and the thiol is preferably octadecanethiol.

First claim

The invention claimed is:

1. A connector terminal comprising:
a contact portion configured to be electrically brought into contact with another electrically conductive member, wherein the contact portion is covered with a coating layer that includes a silver layer and a film formed by bringing the silver layer into contact with a solution containing a thiol compound and benzotriazole, and the formation of the film occurs substantially without the formation of silver thiolate.

2. A connector terminal according to claim 1 , wherein a solvent of the solution containing the thiol compound and the benzotriazole is water.

3. A connector terminal according to claim 1 , wherein the thiol compound is octadecanethiol.

4. A method for manufacturing an electrical terminal configured to be brought into contact with with another electrical member, the method comprising:
forming a silver layer on an outermost surface of a contact portion of the connector terminal, the outermost surface being configured to be electrically in contact with the other electrical member;
forming a film on the surface of the silver layer by bringing the silver layer into contact with a solution containing a thiol compound and benzotriazole,
wherein the formation of the film occurs substantially without the formation of sifter thiolate.

5. A method for manufacturing an electrical terminal according to claim 4 , wherein a solvent of the solution containing the thiol compound and the benzotriazole is water.

6. A method for manufacturing an electrical terminal according to claim 5 , wherein the thiol compound is octadecanethiol.

7. A method for manufacturing an electrical terminal according to claim 4 , wherein the thiol compound is octadecanethiol.

8. A connector terminal according to claim 1 , wherein the thiol compound and the benzotriazole coexist in the solution as separate compounds.

Assignees

• Autonetworks Technologies Ltd
• Sumitomo Wiring Systems
• Sumitomo Electric Industries
• Autonetworks Technologies Ltd

Inventors

• Sunaga Takahiro
• Saka Yoshifumi

Classifications

• H01R43/16

  for manufacturing contact members, e.g. by punching and by bending · CPC title

• H01R13/03 Primary

  characterised by the material, e.g. plating, or coating materials · CPC title

• Y10T428/12556

  Organic component · CPC title

• C25D3/46

  of silver · CPC title

• C25D7/00

  Electroplating characterised by the article coated · CPC title