Who has the technical terms commonly used in terminals? Urgent need?

Commonly used terms for connectors. post

1. terminal: a separable component (except adapter) that is usually connected to a cable or equipment and used for the electrical connection of transmission line system.

2. RF connector: It is a connector used in the RF range.

3. Video: Radio waves with frequency range of 3HZ∽30MHZ.

4. Radio frequency: radio waves with a frequency range of 3 kHz ∽ 3 000 GHz.

5. High frequency: radio waves with frequency range of 3MHZ∽30MHZ.

6. Coaxial: The inner conductor is supported by dielectric, so the minimum internal reflection coefficient can be obtained in the frequency range used in the measurement.

7. Triaxial transmission line: a transmission line consisting of three coaxial and insulated concentric wires.

8. Grade: the mechanical and electrical accuracy level of the connector, especially the specified reflection coefficient.

9. Universal connectors (Class 2): connectors manufactured with the maximum allowable dimensional deviation (tolerance), but still ensuring the minimum specified performance and compatibility.

Note: The requirement of reflection coefficient can be specified or not.

10. High-performance connector (1 class): a connector that specifies the limit of reflection coefficient according to frequency change. Generally, the specified dimensional tolerance is not strict with that of the corresponding Class 2 connector, but when it is necessary to ensure that the connector meets the requirements of reflection coefficient, the manufacturer is responsible for selecting stricter tolerance.

1 1. Standard test connector (Class 0): A kind of connector of a specific type, which is precisely manufactured and used to measure the reflection coefficient of 1 and Class 2 connectors. The error caused by the measurement result can be ignored.

Note: Standard test connectors are usually part of different types of adapters, and adapters are connected with precision connectors to form a part of test equipment.

12. seal

12. 1 sealed connector: a connector that can meet the specified gas, moisture or liquid sealing requirements.

12.2 barrier seal: a seal that prevents gas, moisture or liquid from entering the connector housing in the axial direction.

12.3 panel seal: prevent gas, moisture or liquid from entering the seal between the fixing or adapter housing and the panel through the mounting hole.

Note: Seals are usually provided as stand-alone products.

12.4 plug-in surface seal: a seal that prevents gas, moisture or liquid from entering the interface of a pair of plug-in connectors.

12.5 gas seal: the seal that meets the requirements of test Qk specified in IEC60068-2- 17 "basic environmental test specification part 2: test-test q: seal".

Basic structural composition of connector

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

The 1. contact is the core component of the connector to complete the electrical connection function. Generally, a contact pair consists of a male contact and a female contact, and the electrical connection is completed by inserting the female contact and the male contact.

The male contact is a rigid part, and its shape is cylindrical (round pin), square column (square pin) or flat (insert). Male contacts are usually made of brass and phosphor bronze.

The female contact, namely the jack, is the key part of the contact pair. It relies on the elastic deformation of the elastic structure when inserting the pin to generate elastic force to form close contact with the male contact and complete the connection. There are many jack structures, such as cylindrical (split slot, necking), tuning fork, cantilever (longitudinal slot), folding (longitudinal slot, 9-shaped), box (square jack) and hyperboloid wire spring jack.

2. Insulators Insulators are also often called bases or inserts. Its function is to arrange contacts according to the required position and spacing, and to ensure the insulation performance between contacts and between contacts and shell. Good insulation resistance, voltage resistance and machinability are the basic requirements for selecting insulation materials to be processed into insulators.

3. The shell, also known as the shell, is the outer cover of the connector, which provides mechanical protection for the built-in insulating mounting plate and pins, and provides alignment when the plug and socket are inserted, thus fixing the connector to the equipment.

4. Accessories are divided into structural accessories and installation accessories. Structural accessories, such as circlip, locating key, locating pin, guide pin, coupling ring, cable clamp, sealing ring, washer, etc. Install accessories, such as screws, nuts, screws, spring rings, etc. Most accessories have standard parts and common parts.