Patent ID: 7946283

Claim:
A toy gun mechanism with a sliding bolt assembly comprising: a housing having a top; a bottom; a front end; and an opening being formed longitudinally through the front end near the top of the housing; and comprising two shells being connected to each other to form the housing; a gear chambers being formed inside the housing along the bottom; and a bolt chamber being formed longitudinally inside the housing between the shells and communicating with gear chamber and the opening in the front of the housing; a motor having a drive shaft protruding into the gear chamber; a gear assembly being mounted in the gear chamber, being driven by the drive shaft of the motor and comprising multiple transmission gears; and a drive gear having multiple teeth being formed part way around the drive gear and having a gap; a bolt assembly comprising a bolt sleeve being hollow and mounted slidably in the bolt chamber and having two ends; one end having an opening; and the other end having an air ejection port; a top surface; a bottom surface; multiple drive teeth being formed transversely along the bottom surface and being selectively engaged by the teeth on the drive gear thereby the drive gear can drive the bolt sleeve to retract in the bolt chamber; a mounting projection being formed on and protruding from the top surface and having a rear surface; and a boss being formed on the rear surface of the mounting projection; a piston rod being mounted slidably in the bolt sleeve through the opening and having a front end; a rear end; and a protruding rim being formed at and protruding out from the rear end of the piston rod, selectively abutting the end of the bolt sleeve with the opening thereby the bolt sleeve forces the piston rod to retract while the bolt sleeve retracts in the bolt chamber and has a lower edge; and a protruding tab; a main spring being mounted coaxially against the rear end of the piston rod; and an auxiliary spring being mounted longitudinally above the bolt sleeve on the boss so as to bias the bolt sleeve to move forward while the multiple drive teeth of the bolt sleeve selectively disengage from the teeth on the drive gear; a trigger assembly comprising a trigger; and a lever; being pivotally mounted in the housing, being selectively pivoted by the trigger and having an upper end; and a lower end; and a latch being mounted pivotally in the housing between the bolt chamber and the gear chamber, extending into the gear chamber, selectively abutting and limiting the upper end of the lever and having a catch engaging and holding the protruding tab, whereby when the gun is fired, the bolt sleeve moves back and forth by the drive gear and the auxiliary spring thereby imitates a bolt motion of a real gun.