Abstract text

A spray gun includes a spray unit, the spray unit having a nozzle and a trigger connected beneath the nozzle, a frame connected to the spray unit and connected with a container, and a path defined between the nozzle and the frame; a sliding slope having a slope sliding by driving the trigger, further having a return unit at the back end to drive the trigger back to original position after the trigger is pulled; an action rod having a piston at one end thereof and the slope of the sliding slope at another end thereof, the piston is moved reciprocally by the slope of the sliding slope when the trigger is pushed and returned to original position, and a pump connected to the path and the action rod is located corresponding to the pump, the action rod located within the pump and defining the pump into a first chamber and a second chamber; wherein when the piston is moved reciprocally by the slope of the sliding slope, the first chamber and the second chamber output liquid alternatively to generate the continuous spray.