Basic structure of the connector


The basic structural components of the connector are ① contact parts; ② insulator; ③ shell (depending on the variety); ④ accessories.

1, contact parts (contacts) is the core parts of the connector to complete the electrical connection function. Generally by the positive contact parts and the negative contact parts to form a contact pair, through the Yin and Yang contact parts of the plug to complete the electrical connection.

Positive contact is a rigid part, its shape is cylindrical (round pin), square column (square pin) or flat (insert). Positive contact parts are generally made of brass, phosphor bronze.

The negative contact is the jack, is the key parts of the contact pair, it relies on the elastic structure in the insertion with the pin when the elastic deformation and elastic force and the positive contact to form a close contact to complete the connection. Jack structure of many kinds, there are cylindrical (split groove, indentation), tuning fork type, cantilever beam type (longitudinal slotted), folded type (longitudinal slotted, 9 characters), box-shaped (square jack) and hyperbolic wire spring jack.

2, insulator Insulator is also often called the base (base) or mounting plate (insert), its role is to make contact parts according to the required bit and spacing arrangement, and to ensure that the insulation properties between the contact parts and between the contact parts and the shell. Good insulation resistance, voltage resistance performance and easy processing is the choice of insulation materials processed into the basic requirements of the insulator.

3, the shell, also known as the shell (shell), is the outer cover of the connector, which provides mechanical protection for the insulated mounting plate and pins inside, and provides alignment when the plug and socket are inserted, and thus the connector is fixed to the equipment.

4, accessories Accessories are divided into structural accessories and mounting accessories. Structural accessories such as snap rings, positioning keys, positioning pins, guide pins, coupling rings, cable clamps, seals, gaskets, etc.. Installation accessories such as screws, nuts, screws, spring rings, etc.. Most of the accessories have standard parts and common parts.

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