| 摘要 |
A bolt assembly for a pneumatic paintball gun preferably includes a bolt front, a firing valve, and a bolt back. The bolt back preferably includes a valve chamber and a pneumatic passage connecting the valve chamber to an input/output port. The bolt front is preferably connected to a forward end of the bolt back in communication with the valve chamber. The firing valve is preferably arranged in the valve chamber. A plurality of bolt ports can be arranged in the bolt back in fluid communication with the valve chamber to transfer compressed gas to and from a compressed gas storage chamber. In a forward position, compressed gas can be supplied to a rearward portion of the valve chamber from the input/output port through the pneumatic passage. The firing valve can be biased forward by the pneumatic pressure and be seated within a valve seat formed in a rearward end of the valve front. The pneumatic pressure preferably further deforms an edge of the firing valve and fills the compressed gas storage chamber. In a rearward position, compressed gas is preferably vented from the rearward portion of the valve chamber through the input/output port. The firing valve is preferably driven rearward by the compressed gas in the compressed gas storage chamber and unseated from the valve front. Compressed gas is thereby permitted to escape through the bolt front and fire a paintball from the paintball gun. The rearward end of the firing valve can preferably seat in the rearward portion of the firing valve chamber to plug the pneumatic passage and prevent compressed gas from the compressed gas storage area from escaping through the input/output port.
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