Novel drilling tool thread protects thread protector device

The utility model relates to a novel drilling tool thread protects thread protector device. Its technical scheme is: being equipped with air bag in the inboard of casing, being equipped with the screwthread in air bag's inboard, the casing is together fixed with air bag, is equipped with the casing breach in the bottom of casing, installs the strengthening rib on the casing breach, is equipped with inflation inlet and push button gas vent on the casing breach, and the inflation inlet is the check valve, only allows compressed air to get into, can not discharge. The push button gas vent is thenormally closed valve, only carminative the time, press with the hand and to exhaust, and casing and air bag cover are on drilling tool thread. The beneficial effects of the utility model are that: the utility model discloses simple structure, safe and reliable, it is convenient to maintain, aerifys in to air bag through the inflation inlet, just reaches the effect of losing no time the thread protector, the phenomenon of