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D-sub, D-shaped connectors - backshells, hoods, are widely used in the industry of communication and computer, network, it applies in many different fields, and has become one of the most common type of connectors. This type of connector is composed of two parts, shell and core parts, which are the essential components of most electronic equipment, enabling the components to be interconnected and providing electrical and mechanical connections.

The core parts of a D-sub, D-shaped connector are generally two or three sides of contacts that can be coiled or straight. The outer shell is assembled with a rectangular plastic shell, and all kinds of terminal lead sliders, screws, nuts, jumpers, etc. are also included in its structure. The molding plastic shell of the D-connection component can not only protect against the external environment, but also maintain enough strength and insulation. In addition, it can also reach the functions of sound insulation, mechanical protection, and electrical protection.

In terms of working principles, when the D-sub, D-shaped connector is connected with the corresponding device, the contactor is placed between the inner two sides of the core parts of the connector, and then the external shell of the connector is connected with the panel on the body of the device, as shown in the figure. When connecting the two, the contactor in the middle should be aligned with the contactor of the corresponding device, and then the shaft is pressed to conduct the completion of the connection.

In conclusion, the shell and core parts of a D-sub, D-shaped connector are the essential components of most electronic equipment. It is widely used in communication and computer network. The application of this type of connector not only plays an import role in connecting the components, but also providing electrical and mechanical connections, sound insulation, mechanical protection, and electrical protection. In terms of working principles, simply align the contactors of the two devices before pressing the shaft to complete connecting.

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