Firing mechanism of airsoft gun

Abstract

A firing mechanism of an airsoft gun includes a canister of propellant having an outlet member. The firing mechanism includes a pivotal follower engaged with a trigger; and a valve assembly including a spring biased sliding rod urging against the follower, an O-ring put on the sliding rod for blocking the outlet member, a well on the sliding rod, a chamber having an outlet element, a passage interconnecting the outlet member and the chamber, and a ball seated on the outlet element for blocking the chamber; a channel in communication with the chamber; and a spring biased stopper for closing a forward end of the channel. In response to pulling the trigger, the pivotal follower rotates to move the sliding member rearward so that propellant supplied by the canister may push a projectile out of the airsoft gun.

What is claimed is: 
     
         1 . A firing mechanism of an airsoft gun including a canister of propellant having an outlet member, comprising:
 a trigger;   a pivotal follower operatively engaged with the trigger; and   a valve assembly including a spring biased sliding rod urging against the pivotal follower, a main O-ring put on the sliding rod for blocking the outlet member, a well formed on the sliding rod, a chamber having an outlet element, a passage interconnecting the outlet member and the chamber, and a ball seated on the outlet element for blocking the chamber;   a channel in communication with the chamber; and   a spring biased stopper for blocking a forward end of the channel;   wherein in response to pulling the trigger, the pivotal follower rotates to move the sliding member rearward, move the main O-ring out of the outlet member, and move the well rearward to receive a portion of the ball to unblock the outlet element so that propellant supplied by the canister of propellant is configured to leave out of the outlet member to enter the chamber via the passage; the pressurized gas further flows out of the outlet element into the channel; and the pressurized gas leaves the channel by pushing the spring biased stopper forward.