The connector is a kind of component that electronic engineers and technicians often touch. Its role is very simple: in the circuit is blocked or isolated between the circuit, set up a bridge of communication, so that the current flow, so that the circuit to achieve the intended function. Connectors are an indispensable part of electronic equipment, and if you follow the path of current, you will always find one or more connectors.
1. Poor contact
The metal conductor internal precision connector terminal is the core part of the terminal voltage, which will come from an external wire or cable, contact current or signal is sent to the connector matching with the corresponding upper part. So the contact sheet must have excellent structure, stable and reliable contact force and good electrical conductivity. Due to the structure of the contact design is not reasonable, material selection error, mold is not stable, processing size tolerance, surface roughness, heat treatment, plating and other surface treatment process is not reasonable, improper assembly, storage and use of harsh environment and improper use of the operation, will be in the bit of contact and resulting in poor contact of the matching parts of the contact part.
2. Poor insulation
Insulators are contacted to maintain the correct position arrangement and are insulated from each other by the contact between elements and enclosures under the action of contact contact. A process in which an insulating member must have excellent electrical, mechanical and formable properties. Especially with high-density, commonly used miniaturized terminals, more and more effective wall thickness insulators are available. This put forward the insulation materials, injection mold and precision molding technology more stringent requirements. Due to the extra metal, the surface or inner surface of the insulator dust flux pollution wet, organic material precipitates and harmful gas adsorption film and surface water film existence is formed by ion conduction channel, moisture-proof, mildew proof, material aging absorption fusion and insulation, will cause short circuit, leakage current, breakdown, low insulation resistance poor insulation phenomenon.
2. It is not fixed properly
Not only are the insulators insulated, usually extended for contact, to provide precise centering and protection, but they also have a function of mounting and positioning, locking and securing the device. Fixation is not good, light affects reliable contact causing instantaneous power, serious is the product of disintegration. Disintegration refers to the material, design, technical and other reasons caused by the plug and socket structure between the plug terminals together, is reliable among them, between the pin and the jack is abnormal separation will lead to serious consequences, power transmission and signal control interruption control. Because the design is not reliable, improper selection of major errors, forming process, heat treatment, mold, assembly, welding process quality is poor, assembly is not in place will cause bad fixation.
In addition, because of coating peeling, corrosion, scratch, molding flash, rupture, contact rough machining deformation and other reasons, resulting in poor appearance, because positioning with dimensional tolerance, consistency of processing quality, adverse exchange of total separation force caused by too much locking, is also a common disease, frequently occurring disease. These faults can generally be removed in a timely manner during the inspection and use of the discovery.
