Patent ID: 8613290

Claim:
An anti-inundation and drainage structure for an anti-freeze faucet comprising: a tube body including, a chamber defined therein, an inlet formed on one end thereof, an outlet arranged on another end thereof, and a coupling hole adjacent to the outlet, and the inlet, the outlet, the coupling hole being in communication with the chamber; a controlling valve fixed in the chamber of the tube body and including a housing, an axial bolt, a connector, a second check device, a ceramic shifting piece, a ceramic fixing piece, and a positioning member, the housing having, a first water aperture defined on a peripheral side thereof, the axial bolt being inserted into the housing and having a driving segment and a connecting segment relative to the driving segment, the driving segment being located at the housing, the axial bolt also having a water outflow room defined in the driving segment thereof and a coupling opening extending out of the housing, the axial bolt further having a second water aperture formed on an outer wall thereof and communicating with the water outflow room, the connector being cylindrical and having a first segment and a second segment relative to the first segment, the first segment connecting with the connecting segment of the axial bolt, the second segment having a projected stopping rim and a slot formed on an end surface thereof, the connector also having two seal rings fitted between the first segment and the second segment, and between the two seal rings being defined an air vent for communicating with the slot; the second check device having a checking member fitted on the connector, an unidirectional sealing washer fitted on the checking member, a spring fitted on the connector and abutting against the stopping rim and the slot, such that the air vent of the connector flows air smoothly; the ceramic shifting piece being fitted in the housing and retaining with and driving the driving segment of the axial bolt; the ceramic fixing piece being retained in the housing and contacts with the ceramic shifting piece, the positioning member having a channel axially arranged therein and screwing with the housing; and a control assembly coupled with the coupling hole of the tube body and including a rotating member connecting with a rod in the chamber of the tube body, the rod having a hollow passage defined therein and an air port formed on one end thereof so as to couple with the rotating member, another end of the rod relative to the air port being inserted into the second segment of the slot of the connector of the controlling valve.