Interface, joint, connecting line and system for transmitting various signals

The utility model provides an interface, a joint, a connecting line and a system for transmitting various signals. Transmission of VGA signals and serial port signals is integrated on one interface orjoint, so that one interface or joint replaces a rear joint needing two interfaces in the prior art, and the advantages are as follows: firstly, the number of sockets is reduced; only one cable is needed, only one cable needs to be threaded in the later wiring and pipe penetrating process, operation is convenient, and efficiency is improved; and thirdly, the transmission of the VGA signal and theserial port signal can be realized by only arranging one interface or joint on the equipment, so that the equipment does not need to process and manufacture two sockets like the prior art, and the manufacturing cost of the equipment is reduced. 本实用新型提供了一种传输多种信号的接口、接头、连接线及系统，将VGA信号和串口信号的传输集成在一个所述的接口或接头上，从而实现由一个所述的接口或接头代替现有技术中需要两个接口后接头，优点在于：一是插座的数量减少了；二是只需一根线缆，在后期布线穿管的过程只需穿一根线缆，方便操作，提高效率；三是由于设备上只需设置一个所述的接口或接头即可实现VGA信号和串口信号的