1.Prevent the increase of contact resistance of the connector and avoid the occurrence of fault problems caused by excessive contact resistance of the connector.

2.Prevent damage to the connector housing and keys.

3.Prevent connector mismatch and circuit damage.

4.Prevent excessive wear of connectors and avoid intermittent or disconnected connections.

5.Prevent poor insulation breakdown of connectors.

6.Prevent damage to non-metallic parts of the connector.

7.Prevent the connector from being infringed by corrosion factors.

Conclusion:the design of the connector must be firm,highly reliable,easy to maintain and durable,which is also the best solution to reduce the failure of the connector.