Take the car battery as an example; assuming that the battery cable is fixed and welded to the battery, the car manufacturer will increase the workload for installing the battery, increasing the production time and cost; when the battery is damaged and needs to be replaced, the car must be sent to the maintenance station , remove the old one by desoldering, and then solder the new one, which requires more labor costs; with the connector, you can save a lot of trouble, buy a new battery from the store, disconnect the connector, remove the old battery, install Put on a new battery and reconnect the connector; this simple example illustrates the benefits of the connector; it makes the design and production process easier and more flexible, reducing production and maintenance costs.

The insulator is also often called a base or a mounting plate. Its function is to arrange the contacts according to the required position and spacing, and to ensure the insulation performance between the contacts and between the contacts and the housing. Good insulation resistance, withstand voltage performance and ease of processing are the basic requirements for selecting insulating materials to be processed into insulators.