Medium-small corrugated brush wire four-plug-in structure

The utility model discloses a four-plug-in structure of medium and small corrugated brush wires. Including two inserts, the same brush wire handle is arranged between the two plug-in units; the sides,close to each other, of the two plug-in units are each provided with a first pin and a second pin. One end of the first contact pin and one end of the second contact pin extend into the brush wire handle; the sides, away from each other, of the two second pins are provided with a plurality of sawteeth. One ends, close to each other, of the two first pins are arranged in an arc mode, one side of the plug-in is provided with two installation grooves, one ends of the first pins and one ends of the second pins extend into the two installation grooves respectively, and one sides, far away from each other, of the two installation grooves are provided with installation cavities formed in the plug-in. According to the utility model, the grooves and the sawteeth are adopted, so that the brush wires easily enter the brush