Reasons and solutions for electrical connector connection failure?

Electrical connectors can be connected to two different conductors, so that the two are not connected to the current or signal can be effectively connected, in the wide application of electronic equipment today, it is indispensable electronic components, then you know what are the reasons for the failure of the product connection? What methods to take to solve? At present, most of the connector conductors are used between the elastic connection, such as bellows type elastic connection, jack slotted elastic connection and spring claw type elastic connection, etc., of which the jack slotted elastic connection because the structure is more compact, the assembly is relatively simple, the cost of processing is inexpensive, so it is used in a wider range. The reason why there will be connection failure and the following two reasons: 1, the inner conductor fixation is poor Because of the actual assembly needs, the structure of some connectors is more special, its inner conductor in the media support part of the two cuts, through the bolts will be connected, but because the inner conductor itself is small in diameter, in the assembly, the threaded joints are not coated with adhesive for fixation, then the inner conductor of the connection strength is very low. The connection strength of the inner conductor is very low. When the connector after several times of connection and disconnection, because of the long-term role of torque and tension, the inner conductor threads will easily occur loosening, falling off the phenomenon, resulting in connection failure. The structure of the connector is relatively simple, through the inner conductor, dielectric support, the outer conductor rely on adhesive fixed up, in the assembly, because the amount of glue is too small, will lead to poor strength of the connection, during the use of the glue, because of the glue at the influence of external forces, there may be fracture, resulting in the inner conductor rotating, or even axial tampering, the inner conductor between the conductor can not form a good electrical contact effect, natural Can not be connected properly. Solution: connectors in the assembly, you can apply an appropriate amount of conductive adhesive in the threaded connection to increase the reliability of the connection, but also can be used to increase the reliability of the connection thread locking agent. Choose a more viscous adhesive, when applying glue, be sure to check whether the glue is fully coated with the entire hole, the inner conductor coated with glue at the knurling process, you can increase the contact area of the inner conductor and adhesive, reduce the rotation of the inner conductor. You can appropriately adjust the radial size and tolerance size between the inner conductor, outer conductor and dielectric support, so that the inner conductor and dielectric support, dielectric support and the outer conductor to become interference fit, which can make the assembly between these three more solid. 2, the inner conductor of the jack or pin size is not appropriate If the hole diameter of the inner conductor of the jack is smaller than the actual specified size, the pin of the inner conductor of the pin will cause the jack to rotate when inserted into the When the jack, it will lead to excessive expansion of the jack, the deformation exceeds the scope of the product's own elastic deformation, making it plastic deformation, the conductor inside the jack is damaged.　　If the diameter of the pin is too small, the pin and jack in the fit, the gap between the pin and jack wall will become large so that the two inner conductors can not be tightly connected, because the contact resistance becomes large, resulting in poor electrical performance of the connector.　　Solution: Before use, you need to check whether the jack and pin fit is reasonable, we can standardize the pin and jack inner conductor in the fit is the insertion force and retention force values to measure the two fit.　　Through the electronic connector jack and pin size and tolerance adjustment, coupled with the jack conductor aging treatment, you can make the pin and jack insertion force and retention force out of a reasonable range, improve the reliability of the connection.

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