Causes and solutions of electronic connector connection failure

　Electronic 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 it?　　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 low, so it is more widely used. The reason why the connection fails is related to the following two reasons:

　　1, poor fixation of the inner conductor Because of the actual assembly needs, some connectors have a special structure, its inner conductor in the media support part is divided into two, through the bolt 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. 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 be loosened, fall 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, it will lead to the strength of the connection deterioration, during the use of the glue, because the glue is subject to the influence of the external forces, there may be fracture, resulting in the rotation of the inner conductor, 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 properly adjust the inner conductor, outer conductor and media support between the radial size and tolerance size, so that the inner conductor and media support, media support and outer conductor fit between the interference fit, you can make the assembly between the three more solid.　2, the inner conductor of the jack or pin size is not appropriate The hole diameter of the inner conductor of the jack is smaller than the actual size, the pin of the inner conductor of the pin in the insertion of the jack, it will lead to excessive expansion of the jack, the deformation exceeds the scope of the product's own elastic deformation, which makes it plastic deformation, the inner conductor of the jack was 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 closely 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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