Sinking plate audio connector

The utility model relates to the technical field of audio connectors, in particular to a sinking plate audio connector, which comprises an insulation casing body. A spigot is arranged on the casing body; and terminal sets are fixedly arranged inside the casing body. Each terminal set comprises a switch terminal and a connection terminal which are in mutual touch connection; the switch terminal extends into the spigot; stepped notches are respectively arranged on two sides of the lower portion of the casing body; plug pins of the terminal sets are respectively arranged inside the notches; the lower end of each plug pin is not excessive to the bottom end of the casing body; and the portions below the top surface of a step from the notches of the casing body are all inlaid inside a circuit board, thereby reducing installation space of the sinking plate audio connector. After installation, besides that the casing body and the circuit boards are welded through the plug pins, mutual restraint of the circuit board a