Connector plug connection form common environmental performance

Threaded connection: some have a larger size of the contact and work in a strong vibration environment connector plug is often used in a kind of connection form, this form of connection in the completion of the connection can be installed to prevent the loosening of the fuse, the use of this form of connection is reliable, but even the unloading of the slow speed. Bayonet connection: a reliable and rapid form of connection and separation, most of the card 121 connection form of electrical connectors have the correct connection and locking visual display, can be observed from the electrical connector connection nut side of the small hole. Plug connection: is a kind of multi-purpose connection form, automotive connector electrical connector plug and socket in the connection and separation of its direction of movement is usually reciprocating linear movement, without twisting and rotating, only a small workspace can be completed with the unloading of the common plug connection with ball or pin two structures, the connection form because there is no mechanical labor-saving mechanism, Dan mistakenly inserted, the mechanical resistance increased significantly, the Can be found in time. Cabinet connection: is used for some close to the frame needs to be blindly connected to the electrical connector on the equipment, can make the electrical equipment to do lighter and smaller, easier to maintain and more reliable, this form of connection so that the operator can not feel the connection, must be designed kind of positioning device, in order to avoid the misplugging of the connector plug is forced to connect to the up, so that misplugging becomes impossible, automotive connector connector plugs are usually adopted Floating or elastic contact design structure to ensure its correct connection.

Common environmental properties include temperature resistance, humidity resistance, salt spray resistance, vibration and shock. ① temperature currently the connector's maximum operating temperature of 200 ℃ (except for a few high-temperature special connectors), the minimum temperature of -65 ℃, due to the connector work, the current in the contact point at the heat generated, resulting in a temperature rise, so it is generally believed that the operating temperature should be equal to the ambient temperature and the temperature rise of the contact point of the sum of the specifications in some specifications, clearly stipulates the connector in the rated operating current under the permissible maximum temperature rise. ② wet moisture intrusion will affect the connection h insulation properties, and corrosion of metal parts, constant humidity and heat test new energy vehicle connector conditions for relative humidity 90% ~ 95% (according to product specifications, up to 98%), temperature +40 ± 20 ℃, the test time according to the product specification, a minimum of 96 hours, alternating humidity and heat test is more stringent. ③ salt spray connector in the environment containing moisture and salt work, its metal structural components, contact parts of the surface treatment layer may produce galvanic corrosion, affecting the physical and electrical properties of the connector, in order to evaluate the electrical connector to withstand the ability of this environment, the provisions of the salt spray test, which is the connector suspended in the temperature-controlled test chamber, with the specified concentration of sodium chloride solution sprayed with compressed air, the formation of salt spray Atmosphere, its exposure time is specified by the product specification, at least 48 hours.

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