UA65838A - Self-firer - Google Patents

Abstract

A self-firer has a barrel with a cartridge chamber for a cartridge with a bottle-shape shell, a barrel box with a cover and aiming unit, a breech-mechanism frame, this has a channel for the breech-mechanism; slots for the guide bosses of the barrel box; handle; shaped clot for the guiding boss of the breech-mechanism, slot for reflecting boss of the cartridge chamber, breech mechanism, firing pin trigger mechanism, bobbin, magazine, collapsible butt. New is the fact that the breech frame has shortened by 0.3 : 0.5 cylindrical part, plate for the auto-trigger lever leading, and long cut in the back part. The spring of the reversing mechanism is shortened by 0.1 : 0.2, the barrel is made in one piece, at the breech end of the barrel there is provided a slant to direct the cartridge from the magazine to the cartridge chamber. The breech mechanism is fixed in the breech frame in the limiting forward position, with rammer downwards. In the middle of the spring of the magazine there are installed the front and the back guiding plates. Besides that, the cartridge chamber is designed for a cartridge with a cylindrical or a conical shell. New design of self-firer provides possibility to shot pistol cartridges.

Description

The invention relates to automatic weapons, namely to submachine guns, which can be used by law enforcement agencies to attack individuals or groups when they commit crimes.

The famous 5.45-mm Kalashnikov AK-74 machine gun (see V.M. Murakhovsky, S.L. Fedoseev. Infantry weapons! 5.45-mm Kalashnikov AK-74 machine gun. - M., Arsenal-press", 1992) consists of a receiver, a barrel with a chamber and a threaded part, a bolt frame with a bolt, a shock-trigger mechanism, a return mechanism, a non-folding butt.

The famous 5.45-mm shortened Kalashnikov assault rifle with a folding butt AKS-74U (see V.I.

Murakhovsky, S.L. Fedoseev Infantry weapons. 5.45-mm Kalashnikov assault rifle AKS-74U. - M., "Arsenal-press", 1992), which is taken as a prototype containing a receiver; a return mechanism; a bolt with a striker is located in the bolt frame, which is mounted on the guides of the receiver and is equipped with a rear safety protrusion that interacts with the trigger; shock-trigger mechanism; gas-discharge mechanism with a gas piston, the rod of which is installed in the hole of the bolt frame; folding stock and barrel, which consists of a chamber and a threaded part; muzzle brake-compensator.

However, the prototype has a number of design features that are specific to 5.45-mm automatic weapons

Kalashnikov, which do not allow it to be used for shooting with pistol cartridges of lower power compared to the standard automatic cartridge 5.45x39, namely: - the barrel is made with an opening for the removal of powder gases, a chamber and a threaded part for firing a 5.45-mm automatic a cartridge that does not allow shooting with pistol cartridges; - the principle of operation of the automatic mechanism is based on the use of the energy of part of the powder gases discharged from the barrel; - the ability to move the bolt in the bolt frame does not ensure reliable reloading when firing pistol cartridges; - the design of the magazine does not ensure reliable movement of pistol cartridges to the delivery line.

The invention of the proposed technical solution solves the problem of the possibility of firing with pistol cartridges, which is provided by structural changes of the barrel, making changes to the design of the magazine and the locking mechanism.

The solution to this problem is achieved by the fact that the AKS-74U automatic weapon, which includes a barrel with a chamber for a cartridge with a bottle-shaped sleeve; a receiver with a cover and a sighting device; shutter frame, which has a channel for the shutter, grooves for the guide protrusions of the receiver, a handle, a shaped groove for the guide protrusion of the shutter, a groove for the reflective protrusion of the receiver; bolt; reverse mechanism; trigger mechanism; streamer; shop; a folding example, according to the invention, the bolt frame has a cylindrical part shortened by (0.3...0.5) Ічч, a release plate for the self-timer lever and a longitudinal cutout in its rear part; the return mechanism spring is shortened by (0.1...0.2)Й; the barrel is made solid, the breech section of the barrel is chamfered to direct the cartridge from the magazine into the chamber, and the bolt is immovably fixed in the bolt frame in the most forward position with the forwarder down, and front and rear guide plates are installed in the middle of the magazine spring. In addition, the chamber is made for a cartridge with a cylindrical sleeve and for a cartridge with a conical sleeve.

These signs are necessary and sufficient to solve the given task.

So, the fact that the shutter frame additionally has a shortened cylindrical part allows to reduce the weight of the moving parts of the automation mechanism for the purpose of its reliable operation.

The fact that the bolt frame has a release plate for the self-timer lever allows you to press the self-timer lever and remove the protrusion (whisper) of the self-timer from under the trigger guard.

The fact that the bolt frame has a longitudinal cutout in its rear part allows the cock to take a fighting position, that is, to hit the firing pin.

The fact that the spring of the reverse mechanism is shortened by (0.1...002)Y allows to ensure the optimal force of resistance of the reverse mechanism of the recoil impulse.

The fact that the barrel is made solid allows you to use all the energy of the powder gases to push the bullet and roll away the moving parts of the automatics.

The fact that the breech section of the barrel is beveled to direct the cartridge from the magazine into the chamber allows to exclude the possible skewing of the pistol cartridge during delivery.

The fact that the bolt is immovably fixed in the bolt frame in the most forward position with the forwarder down allows you to ensure that the cartridge is sent into the chamber, the barrel is locked, the cartridge case is extracted from the chamber, and the cartridge case is knocked out of the receiver.

The fact that front and rear guide plates are installed in the middle of the magazine spring allows for reliable movement of pistol cartridges to the delivery line.

The fact that the chamber is designed for a cartridge with a cylindrical sleeve allows firing pistol cartridges with cylindrical sleeves.

The fact that the chamber is designed for a cartridge with a conical sleeve allows you to fire pistol cartridges with conical sleeves.

The invention is explained by the following drawings:

Fig. 1 - a general view of an automatic weapon in section.

Fig. 2 - shutter frame (rear view).

Fig. 3 - fixing the shutter in the shutter frame (view from the left).

Fig. 4 - fixing the shutter in the shutter frame (front view).

Fig. 5 - fixing the shutter in the shutter frame (right view).

Fig. 6 - reverse mechanism.

Fig. 7 - shop in section.

An automatic weapon (Fig. 1) consists of a receiver 1, a barrel 2, a return mechanism 3, a shutter 4, a shutter frame 5, a shock-trigger mechanism 6, a cover of the receiver 7, an aiming device 8, a trigger 9, a handle 10, a compound stock 11 and magazine 12. Barrel 2 is made solid (that is, without any hole), the breech section of the barrel is beveled to direct the cartridge from the magazine into the chamber. Using a cut with a gap, the barrel 2 is installed in the sleeve 13, which is fixed with the help of a pin 14 in the connecting sleeve 15 of the receiver 1. The longitudinal orientation of the barrel 2 is carried out with the help of a locking ring 18.

The shutter 4 (fig. 2, 3, 4, 5) is immovably fixed in the extreme front position with the forwarder down using a plate 19, which is fixed with two screws 20 to the side surface of the shutter frame 5. The shutter frame 5 has a shortened cylindrical part by (0.3 ...0.5) Ічч (Ічч - the length of the cylindrical part of the shutter frame), the release plate 21 of the self-timer lever and the longitudinal cutout in its rear part.

The return mechanism (Fig. b) includes a return spring 22 shortened by (0.1...0.2) I (I is the length of the return spring), a guide rod 23 installed in the heel 24, as well as a movable rod 25 and clutch 26.

In the store 12 (Fig. 7) in the middle of the spring 27, the front and rear guide plates 28, 29 are installed, which act as the front and rear walls of the store. The front plate 28 in the upper part is made with a slope, which serves as an additional bevel for directing the cartridge into the chamber.

Operation of parts and mechanisms during charging.

To load a weapon, it is necessary: - to attach a magazine equipped with cartridges 12 to the weapon; - put the transmitter in the position for conducting automatic (AB) or single (OD) fire; - move shutter frame 5 back and release.

When the shutter frame 5 is moved back to the length of the free stroke, the return spring 22 is compressed, the movable rod 25 moves along the guide rod 23; under the action of the shutter frame 5, the trigger 14 turns back and becomes cocked; the mainspring 15 is twisted; the self-timer under the action of its spring turns back, its protrusion 13 (whisper) becomes under the arch of the self-timer trigger 14, the self-timer lever rises up.

When the shutter frame 5 is released, it is moved forward together with the shutter 4 under the action of the return spring; shutter 4 pushes the upper cartridge out of the magazine 12, sends it into the chamber and closes the bore of the barrel 2. When the shutter 4 approaches the chamber, the ejector catch snaps into the annular groove of the sleeve; plate 21 of shutter frame 5 presses on the self-timer lever; the self-timer turns forward and its protrusion 13 (whisper) comes out from 3- under the arch of the self-timer trigger; the trigger 14 is held by the shaped protrusions of the trigger 16 on the warhead.

The next cartridge under the action of spring 27 rises up to the stop in the folds of the side walls of the store (stands on the delivery line).

Operation of parts and mechanisms during shooting.

When the trigger 16 is pressed, its shaped protrusions come out of engagement with the cocking cock 14, which under the action of the cocking spring 15 turns and strikes the firing pin. The firing pin breaks the cartridge capsule. A shot is fired.

The bullet under the action of powder gases moves along the bore of the barrel 2. The powder gases press on the bottom of the cartridge case, which, leaving the chamber, pushes the bolt frame 5 back. Moving back (as well as when pulling it back by the handle) opens the bore of the barrel 2. By this time, the bullet will have already left the bore of the barrel 2.

The shutter frame 5 with the shutter 4 continues to move back under the action of inertial forces. The sleeve is removed from the chamber under the pressure of powder gases and the ejector hook; held by the catch of the ejector in the shutter 4; the cartridge hits the reflective protrusion of the receiver 1 and is ejected through the cut-out of the cover 7 of the receiver. In the future, the operation of parts and mechanisms, with the exception of trigger 14, occurs as during charging.

When conducting automatic fire, the trigger 14 is kept on the trigger.

At the moment when the bolt frame 5 with bolt 4 is returned to the forward position, after sending the cartridge and closing the bore of the barrel 2 with bolt 4, the bolt frame 5, continuing to move forward, presses the self-timer lever with its plate 21 and brings out the protrusion 13 (whisper) of the self-timer from under the arch chicken. The trigger 14 under the action of the mainspring 15 turns and, entering the longitudinal cut of the bolt frame 5 in its rear part, strikes the firing pin.

When conducting single fire, in order to fire the next shot, it is necessary to release the trigger 16 and press it again. When the trigger 16 is released, it returns under the action of the mainspring 15 together with the sear of single fire 17; the sear of single fire 17 disengages from the cocking of the trigger and releases the trigger 14. The trigger 14 in the cocked state is held by the shaped protrusions of the trigger 16. When the trigger 16 is pressed, its shaped protrusions come off the cocking of the trigger, the trigger 14 returns under the action of the mainspring and entering the longitudinal cutout of the bolt frame 5 in its rear part strikes the firing pin.

The use of automatic weapons, namely submachine guns, by law enforcement agencies to attack individuals or groups when they commit crimes sharply reduces the probability of harming bystanders due to the lower kinetic energy of pistol cartridges compared to automatic cartridges.

The proposed automatic weapon can be manufactured in the conditions of machine gun and armory workshops without significant costs for modern equipment and materials.

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Claims (3)

1. An automatic weapon containing a barrel chambered for a cartridge with a bottle-shaped sleeve, a receiver with a cover and a sighting device, a shutter frame that has a channel for the shutter, grooves for the guide protrusions of the receiver, a handle, a shaped groove for the guide protrusion of the shutter, groove for the reflective protrusion of the receiver, bolt, return mechanism, trigger mechanism, forend, magazine, collapsible butt, which differs in that the shutter frame has a cylindrical part shortened by 0.3...0.5, a plate for the automatic lever trigger and a longitudinal cutout in its rear part, the spring of the return mechanism is shortened by 0.1...0.2, the barrel is made solid, the breech section of the barrel is beveled to direct the cartridge from the magazine into the chamber, and the bolt is immovably fixed in the bolt frame in the most forward position with the sender down and in the magazine in the middle of the spring, front and rear guide plates are additionally installed. 2. An automatic weapon according to claim 1, which differs in that the chamber is designed for a cartridge with a cylindrical sleeve. 3. An automatic weapon according to claim 1, which differs in that the chamber is designed for a cartridge with a conical sleeve.