Air Flow Adjusting Device of Air Gun

Abstract

An air flow adjusting device of air gun, includes a piston sleeve having a rod body, the rod body is provided with a cushion located between a base and an external threaded portion of the rod body, the external threaded portion is threaded with an internal threaded portion of an adjusting knob, the cushion is abutted against the inner wall of the adjusting knob. Thereby, by setting the cushion, the adjusting knob has the buffer effect, so that the moving range will not be too large, ensure the accuracy of adjustment, and the adjusting knob can be rotated by defining a slot in the piston seat, so that the function of adjusting the air flow rate can be achieved without using any tool, improving the operational convenience.

What is claimed is: 
     
         1 . An air flow adjusting device of air gun, comprising:
 a piston seat being internally defined with an air flow channel having an air inlet at a lower part thereof and an elastic plug block corresponding to the air inlet, both sides of the air flow channel being an air outlet and a closed opening, the piston seat being defined with at least one slot,   a piston sleeve having an end head at one end thereof and a rod body at the other end thereof, the rod body being inserted into the air flow channel via the closed opening, the end head being located outside the closed opening, the rod body having a base and an external threaded portion,   an adjusting knob being located in the air flow channel of the piston seat and being defined with an internal threaded portion that is threaded with the external threaded portion of the rod body, so as to make the adjusting knob connected between the rod body of the piston sleeve and the elastic plug block, by rotating the adjusting knob, the total length of the piston sleeve and the adjusting knob being adjusted, a surface of the adjusting knob being provided with a wiping portion, the slot of the piston seat being located corresponding to the wiping portion, the adjusting knob having an inner wall,   which being characterized in that: between the base and the external threaded portion of the rod body is provided a cushion, the external threaded portion of the rod body is threaded with the internal threaded portion of the adjusting knob, and the cushion is abutted against the inner wall of the adjusting knob.