Patent ID: 8851351

Claim:
A trigger assembly for switching one shoot mode or repeat shoot mode comprising: a trigger, a receiving room defined in the trigger, a through hole defined at one end of the bottom of the receiving room, a protrusion extruded from a wall of the receiving room and facing to the through hole, the size of the protrusion smaller than the through hole; a switch pivoted on one end of the receiving room and opposite to the location of the through hole, a curved track defined radially on the switch; a fixing element, an actuator formed at one end of the fixing element and placed into the curved track; a trigger plate, one end of the trigger plate abutted against the fixing element and a pivotal cylinder passing therethrough for pivoting trigger plate on the fixing element, another end of the trigger plate extending to the through hole of the trigger and above the through hole; and a torsion spring pivoted on the pivotal cylinder, one end of the torsion spring resisted against the trigger plate and another end resisted against the receiving room; wherein when a user turns the switch, the actuator of the fixing element moving along the curved track and the fixing element driving the trigger plate to move axially above the protrusion or the through hole; the nail gun is under one shoot mode when the user presses the trigger and the trigger plate is resisted against by the protrusion; the nail gun is under repeat shoot mode when the user presses the trigger and the trigger plate is swinging in the through hole; and wherein at least one first pivotal ring is formed at another end of the fixing element, at least one second pivotal ring formed on the trigger plate and corresponding to the first pivotal rings, the pivotal cylinder passing through the first pivotal rings and the second pivotal rings for pivoting the trigger plate on the fixing element in the receiving room, two ends of the pivotal cylinder being located at two side walls of the receiving room respectively.