Paint ball gun with automatic percussion controller

Abstract

A paint ball gun has a first chamber, a second chamber, a percussion member in the first chamber, an aperture communicating the chambers, a valve in the second chamber, a rear plunger at an end of the second chamber, a firing member in the second chamber and connected to the percussion member, a handle with a trigger assembly therein, and a percussion device having a base with a chamber therein, an inlet and an outlet communicating the second chamber and the rear plunger with the chamber respectively. A guiding block and a rotator are received in the chamber. The guiding block has a first and a second tunnel communicated with the inlet and the outlet respectively. The rotator has a storage chamber therein and two bores. The rotator is rotated to selectively align the bores of the rotator to the first and second tunnels of the guiding block respectively.

1 . A paint ball gun, comprising a first chamber, a second chamber parallel to the first chamber, a barrel connected to the first chamber, a percussion member received in the first chamber for reciprocation, an aperture communicating the first chamber and the second chamber, a valve mounted in the second chamber and at an end of the aperture, a rear plunger at an end of the second chamber for reciprocation, a firing member received in the second chamber between the rear plunger and the valve and connected to the percussion member, a spring received in the second chamber between the firing member and the valve, a handle adjacent to the second chamber, in which a trigger assembly is provided, and a percussion device mounted where the second chamber is communicated with the rear plunger; 
 wherein the percussion device has a base, which has a chamber therein, an inlet communicating the second chamber with the chamber and an outlet communicating the rear plunger with the chamber, and a guiding block and a rotator are received in the chamber of the base;    wherein the guiding block has a resting end rested on a resting end of the rotator and has a first tunnel with an end open at the resting end and an end communicated with the inlet and a second tunnel with an end open at the resting end and an end communicated with the outlet and the rotator has a storage chamber therein and a first bore and a second bore with ends open at the resting ends thereof and ends communicated with the storage chamber, whereby the rotator is rotated by a driver to selectively align the first bore of the rotator to the first tunnel of the guiding block or align the second bore of the rotator to the second tunnel of the guiding block respectively.    
   
   
       2 . The paint ball gun as defined in  claim 1 , wherein the percussion device has two O rings, one of which is rested on the resting end of the guiding block and on the end of the first tunnel and the other of which is rested on the resting end of the rotator and on the end of the second bore.  
   
   
       3 . The paint ball gun as defined in  claim 1 , wherein the percussion is arranged at the end of the second chamber with the rear plunger and the paint ball gun has a channel parallel to the second chamber connecting the rear plunger and the outlet of the base and a check valve mounted in the channel beside the rear plunger and the driver is mounted on an end of the rotator opposite to the resting end thereof.  
   
   
       4 . The paint ball gun as defined in  claim 3 , wherein the driver is a servomotor to be controlled by the trigger assembly.  
   
   
       5 . The paint ball gun as defined in  claim 1 , wherein the percussion device is mounted in the handle and the paint ball gun has a first channel and a second channel parallel to the second chamber, wherein the first channel has opposite ends connected to the second chamber and the inlet of the base of the percussion device respectively and the second channel has opposite ends connected to the rear plunger and the outlet of the base of the percussion device respectively, in which a check valve is provided beside the rear plunger, and the driver is mounted on an end of the rotator opposite to the resting end thereof.  
   
   
       6 . The paint ball gun as defined in  claim 5 , wherein the driver has a gear fixed on the rotator, a rack running through a hole of the base and meshed with the gear and a linkage with ends pivoted on the rack and a trigger of the trigger assembly respectively.