Inlet air way control structure of air tool

Abstract

An inlet air way control structure of an air tool includes a valve sleeve mounted on an inlet channel inside the air tool and communicated with a first inlet air way and a second inlet air way, and a control shaft penetrating the valve sleeve, thereby the control shaft can change the inlet air way of the air tool so that the air tool can be controlled to have a clockwise or counterclockwise rotation. Moreover, the valve sleeve has a fixing element for being fixed with the cylinder, and thus the inlet air way control structure of the present invention can be applied to a plastic housed air tool. Furthermore, owing to the control shaft, the user can operate the rotation direction of the air tool by only one hand so as to achieve a great convenience.

1 . An inlet air way control structure of an air tool, comprising:
 an inlet channel mounted inside the air tool and connected with a valve sleeve, wherein the valve sleeve is respectively communicated with a first inlet air way, a second inlet air way and a cylinder of an air motor inside the air tool, and the valve sleeve is fixed with the cylinder by a fixing element;   a control shaft penetrating the valve sleeve, wherein the control shaft has a separating portion and a first conducting portion and a second conducting portion respectively located in two sides of the separating portion for passing through the air, and the control shaft is capable of moving inside the valve sleeve so as to selectively locate in a first position for coupling the inlet channel to the first conducting portion and communicating with the first inlet air way, or at a second position for coupling the inlet channel to the second conducting portion and communicating with the second inlet air way.   
   
   
       2 . The structure as claimed in  claim 1 , wherein the first and the second inlet air ways are communicated with the cylinder, and the first and the second inlet air ways are respectively clockwise and counterclockwise inlet air ways. 
   
   
       3 . The structure as claimed in  claim 2 , wherein the valve sleeve and the control shaft are mounted under the cylinder and are parallel to the cylinder. 
   
   
       4 . The structure as claimed in  claim 1 , wherein the valve sleeve has plural through holes respectively connecting with the inlet channel and the first and the second inlet air ways. 
   
   
       5 . The structure as claimed in  claim 1 , wherein the fixing element is a screw.