Composite plating structure of charging terminal

By designing a composite coating structure on the charging terminal, the problem of reduced coating durability is solved, achieving the effects of resistance to plugging and unplugging, corrosion resistance, wear resistance, and efficient charging.

CN224531078UActive Publication Date: 2026-07-21DONGGUAN PURUIDE METALS-PLASTICS&PROD CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
DONGGUAN PURUIDE METALS-PLASTICS&PROD CO LTD
Filing Date
2025-08-06
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

The plating on existing mobile phone charging terminals becomes less durable after repeated plugging and unplugging, resulting in poor charging performance and requiring frequent replacement, which affects the user experience.

Method used

The composite coating structure is adopted, which includes a substrate, a planar layer, a combination of multiple gold plating layers, silver plating layers, nickel-tungsten plating layers, platinum plating layers and platinum-ruthenium plating layers. The coating structure is formed by electroplating layer by layer, which is resistant to insertion and removal, corrosion and wear.

Benefits of technology

It improves the number of insertions and removals and conductivity of the charging terminals, extends service life, and enhances charging efficiency and wear resistance.

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Abstract

The utility model discloses an embodiment provides a kind of composite coating structure of charging terminal, including substrate, and plane layer, setting on the outer surface of substrate;First gold plating layer is set on the outer surface of plane layer;Silver plating layer is set on the outer surface of first gold plating layer;Second gold plating layer is set on the outer surface of silver plating layer;Nickel tungsten plating layer is set on the outer surface of second gold plating layer;Third gold plating layer is set on the outer surface of nickel tungsten plating layer;Platinum plating layer is set on the outer surface of third gold plating layer;Platinum ruthenium plating layer is set on the outer surface of platinum plating layer;The shape of substrate is strip shape;In the outer surface of substrate electroplating plane layer, make the outer surface of substrate smooth and smooth, then again in order electroplating first gold plating layer, silver plating layer, second gold plating layer, nickel tungsten plating layer, third gold plating layer, platinum plating layer and platinum ruthenium plating layer, by the metal attribute of the combination of each plating layer, make the plating layer on the surface of substrate have the performance of corrosion resistance, wear resistance, while the addition of gold, silver plating layer further improves the conductivity of composite coating.
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