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Electrical contact, connector, and method for producing electrical contact

A manufacturing method and technology of electric contacts, which are applied in the field of electric contacts, can solve problems such as reduced contact reliability, and achieve the effects of suppressing production costs and high contact reliability

Inactive Publication Date: 2019-05-03
YAZAKI CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The decrease in contact reliability caused by the oxide film is not limited to electrical contacts in automotive harness connectors, but also electrical contacts in devices that open and close circuits such as connectors, switches, and relays used in various electrical equipment. is also a problem

Method used

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  • Electrical contact, connector, and method for producing electrical contact
  • Electrical contact, connector, and method for producing electrical contact
  • Electrical contact, connector, and method for producing electrical contact

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0091] [Manufacturing example 1] Manufacture of electrical contact material

[0092] usefigure 1 The shown CVD apparatus 1 utilizes a microwave surface wave plasma CVD method, and a layer including a graphene monolayer is laminated on a copper foil roll.

[0093] First, the copper foil roll 18 was placed on the sample stage of the discharge chamber 10, and a pretreatment process was performed. Specifically, the surface of the copper foil on the sample stage was cleaned with pretreatment gas plasma of argon and hydrogen at 5 Pa for 20 minutes.

[0094] Next, a carbon material layer lamination step is performed. Specifically, the pressure of the discharge chamber 10 is set to 10 -3 Pa. Next, a mixed gas (methane / argon / hydrogen=30 / 20 / 10 SCCM (standard: 0° C. / 1 atm, cc / min)) containing methane gas, argon gas, and hydrogen gas is supplied from the gas supply unit 12 to the discharge chamber 10, and The pressure of the discharge chamber 10 is set to 3Pa. While supplying the mixe...

manufacture example 2

[0120] [Manufacturing example 2] Manufacture of electrical contact material

[0121] A layer including a graphene monolayer was laminated on a copper substrate (10 mm in width, 10 mm in length, and 1 mm in thickness) by thermal CVD using a heater.

manufacture example 3

[0122] [Manufacturing example 3] Manufacture of electrical contact material

[0123] A layer including a graphene stack was laminated on a nickel substrate (10 mm in width, 10 mm in length, and 1 mm in thickness) by thermal CVD using a heater.

[0124] [evaluate]

[0125] [Appearance observation and observation with an optical microscope]

[0126] Appearance observation was performed about the electrical contact material of manufacture example 2 and manufacture example 3. Figure 8 and Figure 11 The obtained exterior photographs are shown respectively. In addition, optical microscope images were obtained for the electrical contact materials of Manufacturing Example 2 and Manufacturing Example 3. Specifically, observation was performed at a magnification of 500 times. Figure 9 as well as Figure 12 The obtained images are shown respectively.

[0127] [Authorization of carbon materials]

[0128] For the electrical contact materials of Production Example 2 and Productio...

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Abstract

This electrical contact is produced using an electrical contact material having a layer comprising a carbon material, such layer being on a base material comprising a metal material having a resistivity of 1.59 x 10<-8> to 9.00 x 10<-7> [omega]m. The carbon material is a single graphene layer or a graphene laminate obtained by laminating a plurality of such single graphene layers. The thickness ofthe layer comprising a carbon material is preferably 1.0 mm or less. The metal material is preferably selected from the group consisting of silver, copper, gold, aluminum, nickel, tin, alloys of these, and stainless steel.

Description

technical field [0001] The invention relates to an electric contact, a connector and a method for manufacturing the electric contact. Background technique [0002] In automobiles, in order for complex systems to function safely, wiring harnesses are required to have high contact reliability. In addition, in automotive wiring harness connectors, contact reliability needs to be improved according to the conduction mechanism along with miniaturization and weight reduction. [0003] However, in many cases, the contact surface of the electrical contact of the connector is formed by metal such as copper or copper alloy, or formed by tin or tin alloy plating provided on the above metal. In these cases, when a copper oxide film is formed on the contact surface, conduction is hindered by the oxide film, and contact reliability decreases. It should be noted that, for an electrical contact on which an oxide film is formed, it is necessary to apply a large contact force to destroy the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H1/04C01B32/182H01R13/03
CPCC01B32/186H01R13/03C23C16/545C23C16/511C23C16/26C23C16/46H01H1/021H01H1/027H01H2011/046H01H11/041C01B32/182H01H1/04C23C16/455C23C16/04
Inventor 森喜久男清水哲夫
Owner YAZAKI CORP