RU64336U1 - TRUNK UNDER THE CARTRIDGE WITH A RUBBER BULLET - Google Patents

Abstract

The device is designed for shooting with rubber bullets with the exception of the possibility of using metal (hard) bullets. A sleeve containing a channel made in the form of a labyrinth formed by at least two corrugations made on the wall of the sleeve forming a closed cavity filled with a filler with the barrel wall is fixedly fixed inside the barrel under a cartridge with a rubber bullet. In this case, the distance between the extreme points of the corrugations projections closest to each other on the longitudinal axis of the barrel channel is not less than 0.4 of the inner diameter of the sleeve channel. The projections of the corrugations on the plane of the cross section of the bushing channel are equidistant from each other, and the barrel length is selected in the range:

50 mm ≤ L ≤ 710 mm, where L is the barrel length, mm.

In this case, tin, polyethylene or epoxy can be selected as a filler. The barrel design eliminates the possibility of firing metal bullets. 3 s.p. f-ly, 2 ill.

Description

The invention relates to weapons technology, namely to gun barrels for a cartridge with a rubber bullet.

The well-known barrel in the product IZH-17, depicted in the catalog "Sports and hunting weapons" V / O RAZNOEXPORT SSSR, MOSKVA, 1972 p.14. The barrel contains a channel made cylindrical. This barrel can be used when shooting both metal bullets and rubber bullets, when fired by which this product becomes a weapon of traumatic action.

The disadvantage of this barrel in firearms is that weapons with this barrel can be used by a limited circle of people, because along with firing with rubber bullets, it can shoot metal. Such weapons as traumatic weapons do not meet the criminalistic requirements of the Ministry of Internal Affairs of the Russian Federation.

A well-known barrel under a cartridge with a rubber bullet containing a channel made in the form of a labyrinth, while the labyrinth of the channel is made in the form of longitudinal corrugations (RF patent No. 2253816, class F41A 21/16, 06/10/2005). This barrel under the cartridge with a rubber bullet is selected as a prototype.

A disadvantage of the well-known barrel chambered with a rubber bullet is that a rubber bullet accelerated by powder gases develops a fairly high speed. The corrugations of the labyrinth create pressure on the bullet, which, passing through the corrugations of the labyrinth, is deformed and under the influence of this pressure gains high kinetic energy. As a result of the interaction of a bullet with corrugations

maze, corrugations can be straightened. Weapons can become unusable as a result of a bloated barrel. To avoid bloating, it is necessary to wear special bushings on the barrel. Such a technical solution may be relevant only for small-caliber weapons, for example, for the Makarych pistol Izh-79-9T, for which a rubber bullet weighs 0.7 grams and has a diameter of 10 mm.

The task that the utility model is aimed at is the creation of large-caliber traumatic weapons, including 12-caliber ones, which could fire rubber (elastic) bullets, but in no case metal (hard) ones.

The barrel of absolutely any weapon is made of weapon steel, which in the finished product has viscous properties. This is an indispensable condition for safety, otherwise the weapon will explode like a grenade. From this it follows that in places of pressure drop in the barrel, inverse deformation is inevitable. To avoid reverse deformation in the proposed utility model, the obstacles for a bullet forming a labyrinth in a channel are made by applying pressure to the outer wall of the sleeve, which is fixedly mounted inside the barrel and fastened with it. The internal cavity of each obstacle forming a labyrinth is filled with some solid, non-brittle material, which gives additional guarantees that the obstacles will not deform over time. As the "filler" can be used any metal, such as tin, epoxy resin or polyethylene.

In addition, for large-caliber weapons, for example 12 caliber, when firing with rubber bullets, it is necessary to reduce the pressure on the inner surface of the barrel, for this there should be as much free space as possible for the bullet to move in the barrel, but at the same time it should not

to conflict with the criminalistic requirements of the Ministry of Internal Affairs of the Russian Federation, excluding the firing of metal (hard) bullets.

This is solved by the special arrangement of obstacles for the bullet inside the channel and the choice of their number, since the purpose of the obstacles is to provide the maximum obstacle to the passage of a bullet made of solid material.

This problem was solved by using a barrel under a cartridge with a rubber bullet, inside of which a sleeve containing a channel is fixedly fixed, in the form of a labyrinth formed by at least two obstacles for the bullet made in the sleeve and filled with filler, while the distance between the extreme points closest to each other projections by obstacles for a bullet on the longitudinal axis of the channel is not less than 0.4 times the diameter of the rubber bullet, the number of obstacles for the bullet is selected from the condition of maximum filling of the cross-sectional area of the barrel ol projection of obstacles on the specified area, and the projection of obstacles for the bullet on the plane of the cross section of the barrel equidistant from each other, and the barrel length is selected in the range:

50 mm ≤ L ≤ 710 mm, where L is the barrel length, mm.

The labyrinth of the channel can be formed by obstacles for a bullet squeezed from the outer wall of the sleeve into the inner cavity of the channel.

As a filler, tin, epoxy resin or polyethylene can be selected.

This solution allows firing large-caliber weapons, for example 12, only with a rubber (elastic) bullet, which, when pressure is created, passing through the obstacles of the maze, is deformed and under the influence of this pressure gains kinetic energy. When firing metal (hard) bullets, the bullet sticks into the obstacles of the maze and the bullet does not gain

specific kinetic energy of more than 0.5 J / mm, which meets the criminalistic requirements of the Ministry of Internal Affairs of the Russian Federation.

Figure 1 - shows a longitudinal section of the trunk;

In Fig.2 - view A in Fig.1.

The barrel 1 comprises a sleeve 2 stationary and coaxially fixed inside it, having a channel 3 in the form of a labyrinth formed by at least two bullet obstacles 4 made in the wall of the inner sleeve 2, for example, by extrusion. The bullet obstacles 4 are filled with filler 5, for example, epoxy grade E40.

It was experimentally established that the distance “h” between the extreme points of the projections of the obstacles 4 for the bullet closest to each other on the longitudinal axis of channel 3 should be equal to at least 0.4 times the diameter of the rubber bullet. When this value decreases, the bullet will get stuck in the maze.

The number of obstacles 4 for the bullet is selected from the condition of maximum filling of the cross-sectional area of the barrel 1 with projections of obstacles 4 onto the indicated area, while the projections of the obstacles 4 for the bullet onto the plane of the cross-section of the barrel 1 are equally spaced from each other, and the barrel length 1 is selected in the range:

50 mm ≤ L ≤ 710 mm, where L is the barrel length, mm.

When firing with rubber bullets, under the pressure of the powder gases, the bullet, passing through the labyrinth of the channel 3 of the sleeve 2, touching the obstacles 4 for the bullet, is deformed and under the influence of this pressure gains kinetic energy.

Information sources:

1. Product IZH-17, catalog "Sporting and hunting weapons" V / О RAZNOEXPORT SSSR, MOSKVA, 1972 p.14.

2. RF patent No. 2253816, class. F41A 21/16, 06/10/2005 (prototype)

Claims (4)

1. The barrel under the cartridge with a rubber bullet, inside which the sleeve is fixedly mounted, containing a channel made in the form of a labyrinth formed by at least two corrugations made on the wall of the sleeve, forming closed cavities with the barrel wall filled with filler, while the distance between the extreme points the projections of the corrugations nearest to each other on the longitudinal axis of the bore are equal to not less than 0.4 of the inner diameter of the bushing channel, and the projections of the corrugations on the plane of the cross section of the bore channel are equally spaced t of each other, and the barrel length is selected in the range of 50 mm ≤ L ≤ 710 mm, where L is the barrel length, mm. 2. The barrel according to claim 1, characterized in that tin is selected as the filler. 3. The barrel according to claim 1, characterized in that the filler selected polyethylene. 4. The barrel according to claim 1, characterized in that the epoxy resin is selected as the filler.