Circular connectors play an important role in the construction of electronic engineering, ensuring smooth circuits, so they are widely used. Most of the plugs and sockets of circular connectors are connected by screw threads, and the terminals can range from two to hundreds. They have the characteristics of small size and high reliability, which can meet the needs of cable connection between electronic devices. Now let's introduce the circular connector.
Here is the content list:
l The connection method of circular connector
l The direction to consider when choosing a circular connector
l The failures due to improper selection of circular connectors
The connection method of circular connector
1. Threaded connection method. It is a connection form often adopted by circular connectors with large-sized contacts and working in a strong vibration environment. This type of connection can be fitted with a fuse to prevent loosening after the connection is completed. This connection form is reliable, but the connection and unloading speed is slow.
2. Bayonet connection method. It is a reliable and rapid form of connection and separation. Most of the circular connectors of the card 121 connection form have a visual display of correct connection and locking, which can be observed from the small hole on the side of the connection nut of the circular connector.
3. Plug-in connection mode. It is a multi-purpose connection form. When the plug and socket of the circular connector are connected and separated, the moving direction is usually a reciprocating linear motion, without twisting and rotating, and only a small working space is needed to complete the connection and unloading. The common plug connection has two structures: ball or pin. Because this connection form does not have a mechanically labor-saving mechanism, once it is inserted incorrectly, the mechanical resistance will increase significantly, and it can be discovered in time.
4. Cabinet connection mode. It is a circular connector used for some equipment that needs to be blindly connected near the frame, which can make the electrical equipment lighter and smaller, easier to maintain, and more reliable. This type of connection prevents the operator from feeling the connection, and a precise positioning device must be designed to avoid forcibly connecting the incorrectly inserted circular connectors, making it impossible to insert incorrectly. The cabinet-type circular connector usually adopts a floating or elastic contact design structure to ensure its correct connection.
The direction to consider when choosing a circular connector
1. The application environment of circular connectors, such as indoor or outdoor, industrial or automotive;
2. Is the circular connector connected to a signal or power source, frequency range, analog signal, or digital signal;
3. Rated working current and rated working voltage, contact resistance;
4. What connection method is used, such as crimping or welding;
5. Need to use metal or plastic for the upper and lower shells of the circular connector;
6. Whether the circular connector needs self-locking or foolproof design;
The failures due to improper selection of circular connectors
1. The insulation of the circular connector terminals is poor. The function of the terminal insulator of the circular connector is to keep the contacts in the correct position and to insulate the contacts and the contacts, and between the contacts and the shell. Therefore, the insulating parts must have excellent electrical properties, mechanical properties, and process molding properties.
2. The connection terminals of the circular connector are not properly fixed. If the installation is imperfect or the product plug-in life cycle is insufficient and the fixing is poor, the lighter will affect the reliability of the contact and cause instantaneous power failure, and the more serious is the product disintegration. Due to unreliable design, wrong material selection, improper selection of molding process, poor quality of heat treatment, mold, assembly, welding, and other processes, and improper assembly will cause poor fixing.
3. The connection terminals of the circular connector are in poor contact. The metal conductor inside the terminal of a circular connector is the core part of the terminal. It transmits power, signals, etc. to other parts in contact with it. Therefore, the metal conductor inside the terminal must have good conductivity. If the contact design is unreasonable, the material is selected incorrectly, the size is substandard, or the plating layer is handled improperly, it will cause poor contact of the circular connector terminal.
Today, circular connector technology has been well developed. And the popularity of circular connectors is very high, and gradually tends to the unification of international standards. If you are in the circular connectors business, Shenzhen Hongru Connector Co., Ltd. is an ideal choice.
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