RU2599468C1 - Gun for restricted attack - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: invention relates to weapons, namely to weapon for self-defense, and is intended for shooting by elastically strained bullets. Device comprises frame with post with barrel. Barrel consists of two separate parts. First part of barrel comprises cartridge chamber, and second part is channel. Second part of barrel is installed in frame strut by light pressed or transition fit. Post is equipped with safety device, interacting with second part of barrel. At that, safety lock is made in form of pin or spring.

EFFECT: higher reliability of weapon, as well as improving accuracy and accuracy of fire.

3 cl, 3 dwg

Description

The invention relates to weapons technology, namely to weapons for self-defense, and is intended for firing with elastically deformable, mainly rubber, bullets.

Known firearms (patent RU No. 2263269, class F41C 3/00, F41C 7/00, F41A 21/16) containing a frame with a rack in which the barrel is installed by pressing landing. Through holes are made in the barrel bore of an elongated shape.

In accordance with forensic requirements, civilian self-defense firearms designed to fire non-lethal traumatic impact bullets (elastically deformable, rubber) should not allow the possibility of firing a metal bullet charged from the muzzle end or chamber with an energy of more than 0.5 J / mm ² .

To exclude the possibility of firing from this weapon with metal bullets in the barrel bore, through elongated holes were made, which lead to a loss of pressure in the barrel bore and, consequently, to a drop in bullet speed, lower accuracy and accuracy of fire. In addition, hot powder gases breaking through the through holes in the barrel fall into the return spring area (which is located on the barrel), reduce its elastic properties and contribute to the pollution of the return mechanism. All this reduces the reliability of the automation and can lead to jamming of weapons.

Known barrel for firearms of limited defeat (patent RU No. 2509973, class F41A 21/16, F41C 3/00), made in the form of two parts interconnected coaxially by a threaded connection. On the site of the first part of the barrel containing the chamber and the chamber, non-through annular grooves are made, which serve to limit the use of unauthorized ammunition.

However, the breakthrough of the wall of this barrel in the zone of through holes, which occurs when firing cartridges with a metal bullet, does not exclude the possibility of a metal bullet flying out of the barrel. Consequently, this barrel does not fully meet the forensic requirements of the “Law on Weapons”.

Known limited-range firearm with the ability to fire with elastically deformable bullets IZH-79-9T (akbnn.ru/manual_izh799t.php, "Passport of a gas pistol IZH-79-9T MAKARYCH"), taken as a prototype, containing a frame with a rack and a barrel installed in the press fit rack. In the breech of the barrel there is a protrusion for additional connection with the frame by means of a pin. The barrel channel is made in the form of a labyrinth to exclude the possibility of firing metal (hard) bullets (patent RU No. 2253816, class F41A 21/16).

During the passage of the labyrinth in the barrel bore, the rubber bullet is deformed and can receive irreversible deformations, which reduce the accuracy and accuracy of shooting. At the same time, due to pressure differences that occur during the bullet’s overcoming barriers (maze) in the barrel, the reliability of the weapon is reduced.

The objective of the claimed invention is to increase the reliability of weapons and improve accuracy and accuracy of fire.

The problem is solved in that in firearms of limited defeat, containing a frame with a rack and a barrel installed in the rack, having a chamber and a channel, the barrel is made of two separate parts, the chamber is located in the first part and the barrel channel in the second, while the second a part of the barrel having a channel is installed in the frame rack for easy pressing or transitional landing, and the rack is equipped with at least one fuse placed in the groove of the rack with the possibility of interaction with the second part of the barrel.

The fuse is made in the form of a pin.

The fuse is made in the form of a spring.

The claimed device has a simple design that ensures reliable operation of the weapon when firing bullets of traumatic action (rubber bullets). Due to the smooth bore (without protrusions, grooves or through holes), not only sharp pressure drops in the bore are eliminated, but also bullet strikes against obstacles, which as a result improves accuracy and accuracy of fire. Moreover, the design of the claimed device does not allow the possibility of firing a metal bullet, which fully complies with the forensic requirements for civilian self-defense firearms intended for firing traumatic action bullets. When you try to fire a shot from this weapon with a metal bullet, the fuse is destroyed and the weapon is jammed, and its further use becomes impossible.

The claimed device is illustrated by drawings, which depict:

FIG. 1 is a sectional general view of the device (the axis of the fuse made in the form of a pin is placed horizontally). FIG. 2 is a section AA in FIG. one;

FIG. 3 is a General view of the device in section (the axis of the fuse, made in the form of a pin, is placed vertically).

The device comprises a frame 1 (Fig. 1) with a rack 2. In the rack 2, a barrel is installed, consisting of two separate parts. The first part 3 of the barrel contains a chamber 4, and the second part 5 of the barrel contains a channel 6. The first part 3 of the barrel, having a chamber, can be installed in the rack 2 of frame 1 for any fit (press, transition or light press) with or without a pin him. The second part 5 of the barrel, having a channel 6, is installed in the rack 2 for easy press or transition landing. In the rack 2, a groove 7 is made, in which a fuse 8 is installed, interacting with the second part 5 of the barrel (the fuse presses the second part of the barrel to the frame rack). The fuse 8 can be made in the form of a pin mounted horizontally (Fig. 2) or vertically (Fig. 3). The fuse may be made in the form of a spring (not shown in the drawing). There can be one or more fuses. The number of fuses and their parameters (material and dimensions) are selected empirically in such a way that when firing an elastically deformable bullet, the structure withstands the arising loads without destruction, and when firing a metal bullet due to a sharp increase in pressure, the fuse is destroyed and the weapon is jammed. To ensure the safe handling of weapons on the outer surface of the second part 5 of the barrel, a protrusion 9 (Fig. 1) is made, interacting with one of the parts of the weapon (for example, with a return spring 10) and thereby preventing the second part of the barrel from flying outside the weapon when firing with the use of unauthorized ammunition.

The device operates as follows.

When firing a cartridge of increased power, not intended for use in this weapon, the metal bullet after firing rests against the channel 6, made in the second part 5 of the barrel. As a result, there is a sharp increase in pressure, which is not designed fuse 8, connecting the second part 5 of the barrel with the rack 2. The fuse 8 is destroyed. At the same time, the second part 5 of the barrel, installed in the rack 2 for easy-press or transition landing, moves forward under the influence of high pressure, leaves the rack 2 and jam the weapon. The return spring 10, interacting with the protrusion 9, protects the second part 5 of the barrel from flying outside the arms. Further operation of the weapon becomes impossible.

Claims (3)

1. Firearms of limited destruction, comprising a frame with a rack and a barrel installed in the rack, having a chamber and a channel, characterized in that the barrel is made of two separate parts, the chamber is located in the first of them and the barrel channel in the second, while the second the part of the barrel containing the channel is installed in the frame rack for easy pressing or transitional landing, and the rack is equipped with at least one fuse placed in the groove of the rack with the possibility of interaction with the second part of the barrel. 2. Firearms of limited destruction according to claim 1, characterized in that the fuse is made in the form of a pin. 3. Firearms of limited damage according to claim 1, characterized in that the fuse is made in the form of a spring.

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