RU2351873C2 - Automatic machine gun - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: barrel of the automatic machine gun (AMG) has two symmetric side bores and is embraced by a hollow sleeve for the gases coming from the said orifices to pass through it. AMG is furnished with two-way trigger tie rod coupling trigger, sear and auto release mechanism. The said trigger tie rod, when moving, disengages the auto release from the trigger, releases the spring-loaded trigger delay mechanism and safety lock which blocks the lock at its forward position with emptied magazine.

EFFECT: smaller weight, possibility to use different-impulse cartridges not deteriorating compactness and reliability, ease of operation.

1 dwg

Description

Famous design of the machine gun pistol "PP-2000", Russia with a trigger trigger mechanism, a free bolt and a shot with the bolt closed / Babak F.K. "Individual Small Arms", 2004 - M.: Publishing House AST, pp. 162-303 /. The disadvantage of this design is the significant vibration of the weapon due to the displacement of the center of mass when firing.

Also known is the design of a self-loading pistol company "Heckler and Koch" with gas braking free shutter / Babak F.K. "Individual Small Arms", 2004 - M.: Publishing House AST, pp. 162-303 /. The disadvantage of this design is its complexity.

The objective of the invention is that due to the use of a gas brake to roll back the movable system, the role of the chamber of which is played by the hollow coupling of the balancer, into which gases from two symmetrical lateral openings in the barrel fall. Due to such a solution, it is supposed to completely avoid the blows of the moving parts of the weapon against the stationary elements while reducing the mass of the moving parts.

The essence of the invention consists in the creation of a submachine gun consisting of a barrel, a receiver, a bolt, a balancer, a return spring, a trigger, a sear, a trigger, a hammer, a trigger, a self-timer, a delay mechanism, a trigger guard, characterized by the possibility of triggering the trigger the withdrawal during its movement of the self-timer from contact with the trigger, the implementation of the translator-fuse with the ability to lock the shutter in the front position when the cartridges are used up in the magazine, the presence of coverage on the balancer the hollow sleeve and the presence of two symmetrical side holes in the barrel, and the relative position of the sleeve and the holes in the barrel is selected from the condition that powder gases flowing from the holes in the barrel can enter the internal cavity of the sleeve.

The invention consists of a barrel / 1 /, a return spring / 2 / wrapped around it, a synchronizing unit / 3 /, a shutter / 4 /, a balancer / 5 /, a receiver with a handle and a magazine shaft / 6 /, a muzzle brake / 7 /, magazine / 8 /, firing pin / 9 /, trigger / 10 /, mainspring / 11 /, trigger retarder / 12 /, trigger retarder spring / 13 /, trigger / 14 /, trigger spring / 15 /, trigger rod / 16 /, whispered / 17 /, springs of the sear / 18 /, self-timer / 19 /, translator-fuse / 20 /. The balancer has a gas brake chamber / 21 / in the form of a hollow inside the clutch, which plays the role of a leading stop of the return spring. The connection between the trigger / 14 /, the sear / 17 / and the self-timer / 21 / is carried out using a two-way trigger rod / 16 /. Changing the fire mode is carried out by changing the position of the trigger / 15 /, and with a small stroke / single fire / trigger rod / 16 / depresses the self-timer / 19 /, and at full speed / automatic fire / releases it.

Before the shot, the moving parts are in the front position, the bolt / 4 / is closed, the return spring / 2 / in the minimum compression. After pulling the trigger / 15 / trigger / 10 / breaks from the sear and hits the drummer / 9 /. After the shot, the powder gases fall into the gas brake cavity / 21 / and do not allow the balancer / 5 / and the shutter / 4 / synchronized with it to roll back up to the pressure drop in the bore / 1 /, after which due to the residual energy of the shutter / 4 / and the balancer / 4 / move back, produce a collision at the extreme rear point and, under the action of the return spring / 2 /, go back, the bolt captures the next cartridge and sends it to the barrel.

The trigger mechanism works as follows: after pressing the trigger / 15 /, the latter begins to compress its spring / 16 / and sets in motion the trigger rod / 16 /, which overrides the sear with its protrusion / 17 / and releases the trigger / 10 /, which strikes the hammer / 9 / and fires a shot. In the process of its movement, the trigger / 10 / is braked by a spring-loaded moderator / 12 /, which reduces the rate of fire and increases the controllability of the weapon. After the shot, the bolt / 4 / rolls back, cockes the trigger / 10 / and puts it on the sear / 17 /, and when returning to the front position with its protrusion, it hits the self-timer / 19 /, which again overturns the sear / 17 / and makes the next shot at automatic mode. In single-fire mode, the interaction of the shutter / 4 / with the self-timer / 19 / does not occur and after firing the trigger / 10 / remains cocked, and the trigger / 15 / under the action of its spring / 16 / also returns to its original position.

When the cartridges are used up, the protrusion of the store feeder raises the fuse-translator / 20 /, and the shutter / 4 / does not stop in the rear position, since the fuse-translator / 20 / is triggered after the last cartridge was sent to the barrel, but before the shot. In this position, the sear / 17 / and the trigger / 14 / are blocked, which makes it possible to immediately open fire after inserting a new magazine and turning off the fuse without first moving the bolt to the front position and, in addition, increases the available ammunition by 1 cartridge.

The use of a gas brake allows you to fire with a reduced mass of the free shutter, and also allows the use of cartridges with a significant spread of momentum.

Firing with the shutter closed allows you to exclude a shot when the shutter is disengaged from the whisper, as this can happen when shooting from the rear position of the shutter.

Firing with a closed bolt eliminates the movement of the center of mass of the weapon before firing and thereby improves the accuracy of the first shot and single fire.

Claims (1)

A submachine gun including a receiver, a barrel with a hollow clutch covering it and with two symmetrically arranged side openings in it, which ensure that the powder gases flowing from them enter the clutch’s internal cavity, balancer, return spring, hammer, two-way trigger rod, connecting the trigger, the sear and the self-timer and providing, during its movement, the release of the self-timer from contact with the trigger, the spring-loaded trigger retarder and the translator-fuse, made with the possibility of bl okirovaniya shutter in the front position when using up cartridges in the store.