Patent ID: 7905378

Claim:
A trigger valve of a pneumatic nail gun, comprising: a valve base disposed at a gun body of the nail gun between a compressed chamber and a main air valve of the nail gun; a valve rod sliding received in the valve base, being capable of being driven by a trigger of the nail gun to move so as to open or close high pressure air from the compressed chamber into the valve base; a sliding portion sliding received in the valve base, being capable of being driven by high pressure air to move to cause a safety slide rod of the nail gun producing a displacement along a hitting-nail direction; and a shuttle valve sliding received in the valve base and nested with the sliding portion, the shuttle valve being capable of being driven to move under control of the displacement of the sliding portion so as to open or close high pressure air from the valve base into the main air valve, wherein the valve base includes a top guide groove and a bottom guide groove defined therein, the bottom guide groove connecting with the top guide groove; a first valve hole is disposed in a top end thereof, the first valve hole connecting with the compressed chamber and the top guide groove; the valve rod is sliding received in the top guide groove and includes an air-guiding passage defined therein, the air-guiding passage connecting the first valve hole and the bottom guide groove; the valve rod further includes a first valve stopper formed on an outer peripheral surface of a top end thereof, the first valve stopper being capable of controlling the first valve hole to open or close.