Circular connectors for military and aerospace applications

Circular connectors consist of a separable plug and socket. The head and socket are in a cylindrical metal or plastic plug shell. When combined, the shell can be threaded, mouth or push the plug outside the carat type coupling ring connected together. Contacts (holes) Yin inserted in the plastic or glass insulating material (seal type) mounting plate dense in. Contacts are cylindrical pins, embedded in the insulation Anyang also mounted in the board. Contacts are welded or crimped end connections; mounting plate has a variety of contacts hole arrangement, the number of contacts depends on the contact specifications (current transfer capacity) operating voltage; and to prevent misplugging, a variety of positioning methods. Contacts are usually made of copper and gold, gold-plated surface, or tin. Mounting plate material according to the knot hollowing and performance requirements to determine, often: through nylon, sulfone, carbonate, S, poly poly ABDAP, aldehyde plastics, phenol melamine an aldehyde resin, acid resin and epoxy resin methanol. Shell commonly used high-quality aluminum alloy, temperature applications using high stainless steel. Industrial applications. In the plastic shell is also used. The cylindrical structure of the circular connector is naturally robust and has a higher strength-to-weight ratio than any other shape. It is easily machined with standard machine tools. Easier to seal, mating and un-mating. Simple and robust locking and containment mechanism. Ten years of technological development have made it possible to have a complete and rational process and high reliability. Therefore, the requirement to use in the multi-contact connector to realize the components and cable, cable and cable interconnection occasions, circular connector is the choice. Circular connectors are mainly used in military and avionics equipment, the demand for equipment is the main driving force for the development of circular connector technology military and market. This century 6-70 years is the heyday of its development. In the United States. With circular military connectors accounted for 80% of all circular connector market. All of the connector market sales of about 1, accounting for 5 in all types of connectors in the order of market share, second only to the printed circuit connector. In 18 but 99 years has fallen to the third place, after the rectangular connector. In circular connectors, the national MI standard is the matter of U.S. L actual international military standards, mainly due to the U.S. military owners of a variety of specifications of the large number of connector demand, high level of circular connectors by the detachable plug and socket structure of the technological strength, the large economies of scale, competitive pong price, and the North Atlantic Treaty Organization requirements for the procurement of standardized components and equipment and a variety of other factors. In fact, the British BI British Standards Institution) CC such as S (and EC (European Committee for Electronic Devices) and our country's national military standard to develop their own standards in accordance with the MIL specification.

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