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Elinker electric company technicians study structure of the Terminal
Published：2013-05-02 11:01:25 Views：
Terminals use a wide, large differences in the structure, the following describes the structure more typical of electronic terminals, coaxial Terminal structure can be found in the other content of the Web site. Typical electronic terminals often consists of 4 components: 1 and interface 2, electroplated coatings; 3, Terminal/shell fragments; 4, plastic/housing.
A, the interface is considered the most important components of the terminal blocks, interface determines the contact resistance and life and failure modes of the Terminal, on Interfacial structure of consciousness is to understand how terminals work and designing terminals. interface into discrete and persistent connections.
Separable terminal block on the timing interface is formed, depends largely on the terminal interface structure (shrapnel) geometry, between the terminals and the terminals (a forward) and coating.
Permanent connection interface is a terminal block connections (often a one time connection) to the subsystems are formed. Terminal block connection media tend to be electric wire and cable, and circuit boards. Persistent connections there are two major categories, machinery and welded. Mechanical means-including Crimp, Clamp, IDC, an interference fit (press-in)---interference and interference fit into hard and soft interference, piercing (piercing) and wound (wrapped). Connection each connection has its characteristics and advantages and disadvantages, based on applications, reliability requirements, connected productivity requirements, connected space, technical requirements of connection, connection tool to be used. But some connections can only be used for wires and cables, while others are used for circuit boards, and some for both. IDC,Crimp, Clamp, Piercing wires; interference fit for the circuit board welding can be used for wires and cables can also be used on circuit boards.
B, plating layer has two major roles: protect the terminals from corrosion and optimized interface. Different coating means that different modes of failure, require different designs or different coating parameters (as a forward), also produce a different performance. Different nature of the interface (such as the separation of interface and a permanent connection interface) also require different coatings. Contact resistance of coating choices or even determine stability, which is the size of the force, Terminal shell design, plug life, combining ability. Terminal block according to the needs of their applications and design, coating thickness, hardness (hard-gold, soft gold), color (for example, bright nickel, matte nickel, dark nickel, black nickel, bright Tin, yaguangxi, dark Tin) plating process requirements (such as nickel plating, electroless nickel). In recent years, the terminal after Terminal plating imposing sealing agents or lubricants are becoming the norm, role of sealing agent or lubricant is:
1, lower friction, that is, plug power;
2, reduces wear, lubricant in the terminal block Terminal surface forming a layer of lubricant film, in the terminal block on the timing of such friction of a lubricant film to improve the Terminal, reduce wear, increase Terminal friction of life;
3, increasing the capacity of coating from corrosion, sealing agent to seal the pore formation of electrodeposited plating process, reduce the possibility of environment on corrosion of wiring terminals.