Dustproof microswitch

The utility model relates to the technical field of dustproof microswitches, in particular to a dustproof microswitch, which comprises a base and a rubber cover matched with the base for use, a mounting through hole is arranged on the upper base surface of the rubber cover, a dustproof ring is arranged on the inner wall of the mounting through hole, a button is inserted into the inner wall of the dustproof ring, and a hemispherical pressing cap is arranged on the inner wall of the top of the dustproof ring. An NC terminal is inserted in the inner wall of the other installation through hole in a penetrating mode, an NC contact and an NO contact are arranged on the tops of the COM terminal and the NC terminal, an NO terminal is arranged on the side wall of the base, the switching piece, the elastic piece and the movable piece contact are arranged in an integrated mode, and the dustproof ring is preferably made of sponge. According to the utility model, the button and the hemispherical pressing cap are connected