What is the cause of the pin shifting of the harness connector terminal?

Last Update Time: 2019-07-26 10:33:19

Terminal pin shifting is a very common failure mode of harness connectors. This phenomenon causes the connector to lose its function. Its quality directly affects the transmission of power or signals. In the event of quality problems, there are often serious consequences, and the cost of repairs in the later period has increased significantly. Therefore, this phenomenon deserves our attention.

 

The reasons for the terminal pin shift generally include three aspects:

1. The terminal retention force is unqualified.

2, interpolating interference

3, product application issues

 

Failed in terminal retention

Usually, the unsatisfactory retention of the terminals in the sheath is due to the design reasons of the harness connector, the manufacturing reasons, and the materials used. Standard qualified connectors, connectors with a specification pitch less than 2.8 have a plug-in retention greater than 40N; connectors greater than 2.8 have a retention force greater than 60N.

 

Interpolation

When the male end and the female end of the harness connector are in the process of inserting, since the male end is self-inserted into the non-active area of the female terminal, the terminal pin is displaced and the function is lost. Generally caused by problems in the design and manufacturing process, one has problems with the structural design, and the other is the problem of terminal insertion and extraction.

image.png


Product application problem

The last two reasons are caused by the quality of the harness connector itself, and the terminal pin displacement phenomenon is caused by the wire harness during the production process. It generally includes terminal crimping problems and terminal assembly problems. If the crimping is improper, the bending is excessive, so that the center line of the joint area of the terminal and the crimping area are not parallel. The degree of excessive bending is easy to increase the insertion force and affect the assembly performance; in severe cases, the male terminal cannot be inserted during the insertion process. The active area of the female terminal.

 

If you want to know more, our website has product specifications for connectors, you can go to ALLICDATA ELECTRONICS LIMITED to get more information