Patent ID: 8881931

Claim:
A waterproof and breathable plug, comprising: a plug body comprising a mounting base, a tubular screw rod and a plurality of arched blocks, wherein the mounting base has an air vent disposed in a central region thereof, the tubular screw rod is formed on one side of the mounting base and communicating with the air vent, each of the arched blocks has an outer thread disposed on an outer wall thereof, the arched blocks surround the air vent on the other side of the mounting base, and the arched blocks have gaps therebetween defining free openings; a waterproof and breathable membrane assembled in the arched blocks; a cover member comprising a cap nut, the cap nut having a recessed chamber formed on an inner side thereof, the recessed chamber having a threaded inner wall disposed on a periphery thereof; and an air valve assembled in the recessed chamber of the cover member and spaced from the threaded inner wall at an interval, the outer threads of the arched blocks of the plug body being screwed into the interval and screwed with the threaded inner wall, the air valve penetrating inner sides of the arched blocks.