Patent ID: 8104694

Claim:
An air spray gun comprising: a front tube, a center of which is formed with an air-discharge conduit, an outer wall of a smaller diameter at a rear section of which is formed with a groove, along an outer wall of a larger diameter in front of the groove being formed orderly with a sealing surface and an outer thread, and one side of the outer thread being formed with a positioning slot; a rear tube, a center of which is formed with an air-suction conduit, with a front end of the air-suction conduit being formed with a round hole corresponding to the sealing surface of the front tube, a bottom of the round hole being formed with a first screw-hole, an opening end of the round hole being formed with a first inner thread, and an outer ring surface of the rear tube being formed with a second screw-hole being transfixed with a position-limiting element; and a grip, which is fixed on the first screw-hole at the bottom of the rear tube, a center of which is formed as a hollow shape for transfixing with a high-pressure air tube, enabling the high-pressure air tube to be connected with an air-taking ring, with a tail end of the high-pressure air tube being assembled with a valve switch; after the front tube has been assembled with the rear tube, an annular air chamber being formed between the groove and a wall of the round hole, and the air-taking ring being formed between a rear-end surface of the air-discharge conduit and a front-end surface of the air-suction conduit.