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Electric contact

A technology of electric contacts and contacts, which is applied in the field of electric contacts, can solve the problems of high cost and large amount of silver consumption, and achieve the effects of ensuring quality and service life, reducing product costs, and saving silver-based materials

Inactive Publication Date: 2008-11-19
谢琳锋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantage is that it consumes a lot of silver, so the cost is correspondingly higher

Method used

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Experimental program
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Effect test

Embodiment 1

[0015] Embodiment 1, an electrical contact of the present invention includes an electrical contact neck 3 ( figure 1 ) and head 4, the whole electric contact is made of copper base 2, silver alloy composite layer 1 on the surface of copper base; , Titanium element mixture, its thickness is 250 microns.

[0016] The chemical composition weight percent of the silver alloy composite layer is 0.1-0.2% of the mixture of rare earth metal cerium and lanthanum, 0.05-0.2% of the mixture of zirconium, bismuth, indium and titanium elements with their own characteristics, and the balance is silver metal.

[0017] This product can be used on AC electrical appliances such as machine tools, communications, home appliances and various high-power relays within 30A / 220V-380V.

Embodiment 2

[0018] Embodiment 2, the electrical contact includes an electrical contact neck 3 and a head 4' ( figure 2 , with a flatter top). The entire contact is composed of a copper base 2 and a silver alloy composite layer 1' on the surface of the copper base; the silver alloy composite layer is mainly composed of silver, a mixture of rare earth metals cerium and lanthanum, and a mixture of zirconium, bismuth, indium, and titanium elements with their own characteristics. Its thickness is 150 microns.

[0019] The chemical composition weight percent of the silver alloy composite layer is 0.25-0.3% of the mixture of rare earth metal cerium and lanthanum, 0.2-0.25% of the mixture of zirconium, bismuth, indium and titanium elements with their own characteristics, and the balance is silver metal.

[0020] This product can be applied to all kinds of 5-12A / 3-24V relays, machine tools, communications, automobiles, ships, household appliances and other DC and AC electrical appliances.

Embodiment 3

[0021] Embodiment 3, the electrical contact includes an electrical contact neck (as shown in the figure figure 1 , 2 ). The entire electrical contact is composed of a copper matrix and a silver alloy composite layer on the surface of the copper substrate; the silver alloy composite layer is mainly composed of silver, a mixture of rare earth metals cerium and lanthanum, and a mixture of zirconium, bismuth, indium, and titanium elements with their own characteristics. is 8 microns.

[0022] The chemical composition weight percent of the silver alloy composite layer is 0.3-0.5% of rare earth metal cerium and lanthanum mixture, 0.25-0.3% of zirconium, bismuth, indium and titanium element mixture with their own characteristics, and the balance is silver metal.

[0023] This product can be applied to electric toys, telephones, miniature low-power relays and other DC and low-voltage electrical appliances with electrical contacts. There is also a wide range of application values ​​...

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Abstract

The invention relates to an electric contact used in electric appliance circuit. It includes contact neck, and head, and is formed by copper basal body and silver alloy compound layer. The silver compound layer is mixed by silver, rare earth mixture, character element mixture. And the thickness is 8-250um. Ce and lanthanum is contained in rare earth mixture. Character element mixture includes zirconium, bismuth, indium, and titanium. The chemical components weight ratio is 0.1-0.5% rare earth mixture, 0.05-0.3% character element, and the rest is silver. The invention saves silver series material 30-90%, and lowers cost. It is suitable for double sided electric contact, and has good arcing extinction ability, wear resistance ability, rigidity, heat emission and conductivity.

Description

technical field [0001] The invention relates to an electrical appliance and a contact and connection key part in a power supply circuit. Specifically, an electrical contact. Background technique [0002] The oxides of silver and cadmium have good arc extinguishing properties. At present, electrical contacts made of silver cadmium oxide materials and copper cold heading are generally used at home and abroad. However, cadmium and the heavy metal lead elements associated with industrial cadmium will bring serious pollution to the environment. With the development of society and the improvement of people's living standards, people's awareness of environmental protection is getting stronger and stronger, and their requirements for environmental protection are getting higher and higher. Electrical contacts made of silver cadmium oxide materials have not met the requirements of various aspects, especially the use of which has been explicitly banned by the European Community. How...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H1/02H01H1/025C22C9/00
Inventor 谢根祥谢琳锋
Owner 谢琳锋
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