CN206850073U - A kind of electroplating coating for terminal and terminal, electronic interface, electronic equipment - Google Patents

Abstract

The utility model relates to an electroplating coating for terminals, terminals, electronic interfaces, and electronic devices. The electroplating coating comprises a copper coating electroplated on the surface of the terminal, and the surface of the copper coating is electroplated with an inner nickel-tungsten coating, an inner gold coating, a palladium coating, an outer gold coating, and a rhodium-ruthenium coating in sequence; an outer nickel-tungsten coating and an intermediate gold coating are provided between the inner gold coating and the palladium coating, and an outer nickel-tungsten coating and an intermediate gold coating are provided between the inner gold coating and the palladium coating. The utility model can effectively improve the wear resistance, corrosion resistance, hardness, and electrical contact performance of the terminal by providing the nickel-tungsten coating, the palladium coating, and the rhodium-ruthenium coating, so that the terminal has a long service life.

Description

A kind of electroplating coating for terminal and terminal, electronic interface, electronic equipment

technical field

The utility model relates to the technical field of electroplating, in particular to an electroplating layer used for a terminal, a terminal, an electronic interface and electronic equipment.

Background technique

With the continuous popularization of smart devices, their use frequency is getting higher and higher; when smart devices such as mobile phones and tablets are in use, their interfaces can be used as charging interfaces or data transmission interfaces, and the interfaces are often connected with data lines. Plugging and unplugging, and the interface is often touched by hands. After a long time of use, it is easy to cause corrosion or wear of the terminal of the interface, which will affect the service life of the smart device.

Contents of the invention

The purpose of the utility model is to provide an electroplating coating for terminals, which can effectively prevent the terminals from being worn or corroded.

Another object of the present utility model is to provide a terminal, which is resistant to wear and corrosion and has a long service life.

The third purpose of the present utility model is to provide an electronic interface whose terminals have a long service life.

The fourth objective of the present utility model is to provide an electronic device, the terminal of the electronic interface of which has a long service life.

An electroplating coating for a terminal, which includes a copper coating electroplated on the surface of the terminal, and the surface of the copper coating is sequentially electroplated with an inner nickel-tungsten coating, an inner gold coating, a palladium coating, an outer gold coating and a rhodium-ruthenium coating. Preferably, an outer nickel-tungsten plating layer and an intermediate gold plating layer are also provided between the inner gold plating layer and the palladium plating layer.

Preferably, the thickness a of the copper plating layer is 1-3 μm.

Preferably, the thickness b of the inner nickel-tungsten coating is 0.75-3 μm;

Preferably, the thickness c of the inner gold plating layer is 0.05-0.3 μm;

Preferably, the thickness d of the outer nickel-tungsten coating is 0.75-3 μm;

Preferably, the thickness e of the middle gold-plated layer is 0.05-0.3 μm;

Preferably, the thickness f of the palladium coating is 0.5-2 μm;

Preferably, the thickness g of the outer gold-plated layer is 0.05-0.5 μm;

Preferably, the thickness h of the rhodium-ruthenium coating is 0.25-2 μm.

Further, g+h<3μm; b+d>2um;

A terminal, the surface of which is plated with the above electroplating layer.

An electronic interface includes the above terminal.

An electronic device includes the above-mentioned electronic interface.

Beneficial effects of the utility model: the utility model can effectively improve the wear resistance, corrosion resistance, hardness and electrical contact performance of the terminal by setting nickel-tungsten coating, palladium coating and rhodium-ruthenium coating, so that the service life of the terminal is long.

Description of drawings

FIG. 1 is a schematic structural view of the electroplating coating in this embodiment.

1-rhodium ruthenium coating; 2-outer gold coating; 3-palladium coating; 4-intermediate gold coating; 5-outer nickel-tungsten coating; 6-inner gold coating; 7-inner nickel-tungsten coating; 8-copper coating; 9- terminals.

detailed description

Below in conjunction with accompanying drawing, the utility model is described in detail. As shown in Figure 1.

Embodiment 1: Referring to FIG. 1 , an electroplating coating for a terminal 9, which includes a copper coating 8 electroplated on the surface of the terminal 9, the surface of the copper coating 8 is sequentially electroplated with an inner nickel-tungsten coating 7, an inner gold coating, and a palladium coating 3 , outer gold coating and rhodium ruthenium coating 1.

Preferably, an outer nickel-tungsten plating layer 5 and an intermediate gold plating layer are also provided between the inner gold plating layer and the palladium plating layer 3 .

Since the terminal 9 is generally made of copper material to provide the signal transmission performance and electrical conductivity of the terminal 9; a layer of copper plating 8 is electroplated on the surface of the terminal 9, which can be closely combined with the terminal 9, and at the same time a relatively flat electroplating layer is formed on the surface of the terminal 9. Avoid tip effects. The nickel-tungsten coating has good wear resistance and corrosion resistance, especially acid resistance. The hardness of the palladium coating 3 is relatively high, which can increase the hardness of the terminal 9, prevent it from bending and extending, and is resistant to plugging. Secondly, it has certain corrosion resistance and anti-corrosion Oxidation; rhodium ruthenium coating 1 can improve the electrical contact performance of terminal 9, and its contact resistance is small; it also has high hardness and good corrosion resistance, resistance to plugging and electrolysis of hand sweat; nickel tungsten coating, palladium coating 3 And the rhodium-ruthenium coating 1 can effectively improve the wear resistance, corrosion resistance, hardness and electrical contact performance of the terminal 9; but because these three coatings themselves have certain internal stresses, they are not easy to combine with each other. The selection of materials is made here. Gold plating is used as the transition layer. Gold has good ductility, which can buffer or reduce the internal stress of the above three coatings and prevent cracks in the coating. So that the electroplating coating has better performance.

Secondly, after the double-layer nickel-tungsten coating is adopted here, the thickness of the palladium coating 3 and the rhodium-ruthenium coating 1 can be effectively reduced, and the cost can be reduced. After the double-layer nickel-tungsten coating, the thickness of the nickel-tungsten coating is increased, and the wear resistance and corrosion resistance of the electroplating layer are increased; thereby the thickness of the coating and the rhodium-ruthenium coating 1 can be reduced. Secondly, the double-layer nickel-tungsten coating reduces the thickness of the single-layer nickel-tungsten coating, thereby reducing the internal stress of the metal plating, which can effectively prevent the structure of the nickel-tungsten coating from being too thick and unstable.

Preferably, the thickness a of the copper plating layer 8 is 1-3 μm.

Preferably, the thickness b of the inner nickel-tungsten coating 7 is 0.75-3 μm;

Preferably, the thickness c of the inner gold-plated layer 6 is 0.05-0.3 μm;

Preferably, the thickness d of the outer nickel-tungsten coating 5 is 0.75-3 μm;

Preferably, the thickness e of the middle gold-plated layer 4 is 0.05-0.3 μm;

Preferably, the thickness f of the palladium coating 3 is 0.5-2 μm;

Preferably, the thickness g of the outer gold-plated layer 2 is 0.05-0.5 μm;

Preferably, the thickness h of the rhodium-ruthenium coating 1 is 0.25-2 μm.

Further, g+h<3μm; b+d>2um;

In order to reduce the cost and control the quality of the coating, prevent the thickness of the coating from being too small, the performance cannot meet the requirements, and the thickness of the coating is too large, and the structure of the coating is unstable. Through experiments, the above combination of thicknesses can obtain an electroplating coating with good performance.

Embodiment 2: A terminal 9, the surface of which is plated with the electroplating layer of Embodiment 1.

Terminal 9 may be a terminal in the current electronic interface.

Embodiment 3: An electronic interface includes the terminal 9 of Embodiment 2.

The electronic interface may be various data connection line interfaces, such as a USB interface; it may also be an electronic interface of an electrical connector, or other interfaces for signal transmission or conduction.

Embodiment 4: An electronic device includes the electronic interface of Embodiment 3.

Electronic equipment can be mobile phones, notebooks, IPADs, cameras, computers and other equipment with data processing and/or storage functions.

The above content is only a preferred embodiment of the present utility model. For those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation and scope of application. The content of this specification should not be understood as Limitations on the Invention.

Claims (6)

1. a kind of galvanization coating for terminal, it includes the copper coating for being plated on terminal surfaces, it is characterised in that：Copper coating table Face is electroplate with interior nickel tungsten plating, interior gold plate, palladium coating, outer gold plate and rhodium ruthenium coating successively；Interior gold plate and palladium coating Between be additionally provided with outer nickel tungsten plating, middle gold plate.

A kind of 2. galvanization coating for terminal according to claim 1, it is characterised in that：

The thickness a of copper coating is：1-3μm；

The thickness b of interior nickel tungsten plating is 0.75-3 μm；

The thickness c of interior Gold plated Layer is 0.05-0.3 μm；

The thickness d of outer nickel tungsten plating is 0.75-3 μm；

The thickness e of middle Gold plated Layer is 0.05-0.3 μm；

The thickness f of palladium coating is 0.5-2 μm；

The thickness g of outer Gold plated Layer is 0.05-0.5 μm；

The thickness h of rhodium ruthenium coating is 0.25-2 μm.

A kind of 3. galvanization coating for terminal according to claim 2, it is characterised in that：b+d>2um.

A kind of 4. terminal, it is characterised in that：Its surface is coated with any described galvanization coating of claims 1 to 3.

A kind of 5. electrical interface, it is characterised in that：Including the terminal described in claim 4.

6. a kind of electronic equipment, it is characterised in that：Including the electrical interface described in claim 5.