A socket assembly with composite coating, electrical connector and electroplating method thereof

Abstract

The invention provides a socket assembly with a composite coating, which includes a socket and a contact coil. A blind hole is arranged at the butt end of the socket, and the contact coil is installed in the blind hole. The blind hole closes the contact coil Fixed in the blind hole, the contact coil is provided with a number of elastic claws, the coating of the contact coil is gold-graphene composite coating, and the coating of the socket is gold coating or gold-graphene composite coating. An electrical connector is equipped with the above-mentioned jack assembly. The invention provides a socket fitting with a composite coating, an electrical connector and an electroplating method thereof. By electroplating a gold-graphene composite coating on a contact coil and optimizing the spring claw structure, the mechanical properties of the socket fitting are improved. life, thereby improving the mechanical life of the electrical connector.

Description

technical field [0001] The invention belongs to the technical field of electrical connectors, and in particular relates to a jack assembly with a composite plating layer, an electrical connector and an electroplating method thereof. Background technique [0002] In order to ensure good electrical contact performance of the electrical connector, the contact position between the jack and the pin needs to meet a certain positive pressure, so wear is unavoidable during plugging and unplugging, and in order to ensure good electrical conductivity, usually in contact However, due to the soft hardness of gold itself, nickel, cobalt and other elements are usually added to the plating solution to enhance the hardness of the gold coating to improve the hardness and wear resistance of the gold coating. However, factors such as corrosion resistance need to control the pores of the coating. As the most core part in the electrical connector, the contact piece has a direct impact on the mec...

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Problems solved by technology

[0002] In order to ensure good electrical contact performance of the electrical connector, the contact position between the socket and the pin needs to meet a certain positive pressure, so wear is inevitable when plugging and unplugging, and in order to ensure good electrical conductivity, usually in the contact The surface of the workpiece is gold-plated, but because the hardness of gold itself is relatively soft, elements such as nickel and cobalt are usually added to the plating solution to enhance the hardness of the gold coating to improve the hardness and wear resistance of the gold coating, but factors such as corrosion resistance need to control the pores of the coating rate, the proportion of dopant elements added is limited, and the contact piece, as the core part of the electrical connector, has a direct impact on the mechanical life and reliability of the electrical connector, so that the mechanical life index of the electrical connector in the prior art is limited to 500 At the second level, with the development of military weapons and equipment, higher requirements are placed on the mechanical life of components. The conventional 500-time mechanical life of electrical connectors can no longer meet the long-life requirements proposed in more and more occasions. In addition, the elastic structure of the socket also affects the mechanical life. For example, the Chinese patent with the publication number CN104319495A provides a kind of spring claw. During the process, the claws are repeatedly expanded and retracted, and the root of the cantilever end of the claws is susceptible to concentrated stress, resulting in cracking and affecting the mechanical life

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