There are four main types connections:
1. Threaded connection: Some types of connections are often used for contacts with larger dimensions and connector plugs that operate in a strong vibration environment. This type of connection can be fitted with a fuse that prevents loosening after the connection is completed. The connection form is reliable,but slow to connect and pull.
2. Bayonet connection: it is a reliable and rapid connection and separation form. Most of the electrical connectors of the 121 connection form have a visual display of the correct connection and locking and can be viewed from the small holes on the side of the electrical connector connection nut.
3. Plug and pull connection: is a multi-purpose connection form. When the plug and the socket of the electrical connector are connected and disconnected, the moving direction is usually a reciprocating linear motion, without twisting and rotating, and only a small working space is required to complete the loading and unloading. Common plug-in connections are available in either ball or pin configurations. Since the connection form has no mechanically labor-saving mechanism, once the insertion is mistaken, the mechanical resistance is significantly increased and can be found in time.
4. The cabinet connection: it is used for some electrical connectors on the equipment that need to be blindly connected to the frame, which can make the electrical equipment lighter and smaller, easier to maintain and more reliable. This type of connection makes it impossible for the operator to feel the connection. It is necessary to design an accurate positioning device to avoid forcibly connecting the mis-inserted connector plugs together, making mis-insertion impossible. Connector plugs are usually designed with a floating or resilient contact design to ensure proper connection.
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