Electrical contacts, connector terminal pairs, and connector pairs

A technology of connector terminals and electrical contacts, which is applied in the direction of connection, parts of connection devices, circuits, etc., can solve problems such as increased insertion force, higher friction coefficient, condensation, etc., to achieve reduced friction coefficient and low friction coefficient, the effect of low contact resistance

Active Publication Date: 2021-08-03
AUTONETWORKS TECH LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, tin is very soft and has the property of easily causing condensation, so the contact portion of the tin-plated connector terminal has a high friction coefficient, and the insertion force required to fit the connector terminal by insertion becomes large.

Method used

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  • Electrical contacts, connector terminal pairs, and connector pairs
  • Electrical contacts, connector terminal pairs, and connector pairs
  • Electrical contacts, connector terminal pairs, and connector pairs

Examples

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Embodiment

[0073] Hereinafter, the present invention will be described in detail using examples.

[0074] [Preparation of plating samples]

[0075] Tin-plated samples, tin / palladium-plated samples, and nickel-plated samples were produced by electroplating on the surface of a clean copper substrate. Table 1 shows the film thicknesses of the respective plating layers. Regarding the tin / palladium-plated samples, after the nickel-plated layer was formed as the base layer, the palladium-plated layer and the tin-plated layer were sequentially formed with the described film thicknesses.

[0076] By further heating the tin / palladium-plated sample at 300° C., an alloy between tin and palladium progressed, and this was used as a tin-palladium alloy sample. By observing the cross-section and surface of the obtained sample with a scanning electron microscope (SEM), it can be confirmed that both the alloy part and the tin part are exposed on the outermost surface of the tin-palladium alloy sample, ...

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Abstract

Provided are electrical contacts capable of achieving both a low coefficient of friction and low contact resistance even when slid, and connector terminal pairs and connector pairs including such electrical contacts. In an electrical contact composed of a first contact (10) and a second contact (20) capable of forming electrical contact with each other, it is set as an electrical contact: the first contact (10) has an alloy-containing layer (14) , the alloy-containing layer (14) has an alloy portion (14a) composed of an alloy comprising tin and palladium, and a tin portion (14b) composed of tin or an alloy with a higher ratio of tin to palladium than the alloy portion (14a), Both the alloy portion (14a) and the tin portion (14b) are exposed on the outermost surface of the alloy layer (14), and the second contact (20) is equipped with a dissimilar metal layer (22) on the outermost surface, and the dissimilar metal layer (22) has a specific content The alloy layer (14) has high hardness and is made of a metal that does not contain tin or palladium. In addition, a connector terminal pair and a connector pair provided with such electrical contacts are provided.

Description

technical field [0001] The present invention relates to an electrical contact, a connector terminal pair and a connector pair, and in further detail, relates to an electrical contact having an alloy-containing layer containing palladium on one surface of a pair of contacts electrically contacting each other, and relates to an electrical contact having an alloy layer containing palladium. Connector terminal pairs and connector pairs of such electrical contacts. Background technique [0002] It is required to exhibit low contact resistance at the contact portion of a connector terminal connected to an electric component of an automobile. In general, a tin-plated layer is often formed on the surface of a connector terminal. The tin plating imparts very low contact resistance, enabling good electrical connections. However, tin is very soft and has the property of easily causing condensation. Therefore, the contact portion of the tin-plated connector terminal has a high frictio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25D7/00C25D5/10C25D5/50H01R13/03
CPCC25D5/10C25D5/50C25D7/00H01R13/03H01R13/187
Inventor 加藤晓博渡边玄土屋善康
Owner AUTONETWORKS TECH LTD
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