Patent ID: 7527184

Claim:
A safety structure of a nail gun, wherein the nail gun includes a main frame with a muzzle, a handle, a trigger device and a magazine, comprising: a trigger set including a trigger and a plate, wherein the trigger has an end pivoted on the main frame movable toward the trigger device, and the plate has a first end pivoted on the trigger and is located between the trigger and the trigger device; a linkage slidably engaged on the main frame and having an end pressing a second free end of the plate movable toward or away from the trigger; a spring having an end provided on the main frame and the other end urging the linkage to move back the linkage when the linkage is moved away from the trigger; an arm provided on the main frame on the muzzle for slidable reciprocation along the muzzle, which has an extended portion extending toward a front of the trigger; a tappet having a first end pivoted on the main frame, and a second free end movably engaged on a cover; therein the cover has a first end pivoted on the extended portion of the arm and a second free end covering the tappet and the linkage, wherein the tappet is located between the linkage and the cover and engages and moves the cover when the arm is not pressed against an object and the trigger is moved toward the trigger device so as to move the linkage and tappet away from the trigger device so that the trigger does not actuate the nail gun, and wherein the tappet does not engage and move the cover when the arm is pressed against an object so that the trigger does actuate the nail gun.