RU147479U1 - TRAUMA WEAPON BARREL - Google Patents

Abstract

1. The trunk of a traumatic weapon containing an insert fixed in it, in which two eccentrically arranged cylindrical holes are made, the lateral surfaces of which form a common cavity, the line of intersection of the surface of which is a plane with a plane perpendicular to the axes of both holes, which consists of two circular arcs, characterized the fact that the eccentricity of the insert holes is selected from the condition that the ratio of the distance between the connection points of the arcs of circles of geometric phi urs having the largest area, the diameter of the hole into which it can be inscribed, is within 0,801-0,951.2. The trunk of a traumatic weapon according to claim 1, characterized in that the insertion holes are eccentric to the barrel bore. 3. The trunk of a traumatic weapon according to claim 1, characterized in that one of the insertion holes is aligned with the bore of the barrel channel.

Description

The utility model relates to traumatic weapons and can be used in the construction of various types of traumatic weapons.

A well-known barrel chambered with a rubber bullet (see RF patent No. 2253816, class F41A 21/16, publ. 06/10/2005) [1], containing a channel in the form of a labyrinth, made by corrugating the channel wall.

The well-known barrel is designed for firing with rubber (elastic) bullets and excludes the possibility of firing metal (hard) bullets by sticking a bullet into the labyrinth corrugations, in which the bullet loses kinetic energy and flies out of the barrel with a specific kinetic energy of not more than 0.5 J / mm, which meets generally accepted forensic requirements, including the requirements of the Ministry of Internal Affairs.

The disadvantage of the device [1] is the complex manufacturing technology of weapons, requiring the use of additional special forging equipment and technological equipment (matrix and punch of a certain design).

A well-known barrel under the cartridge for firing with rubber bullets, inside of which is fixed a sleeve containing a channel in the form of a labyrinth formed by plastic deformation of the wall of the sleeve, followed by filling with a hardening component of the cavities located between the sleeve and the hole of the barrel (see patent for utility model of the Russian Federation No. 64336, published on July 26, 2007) [2].

This technical solution allows for firing large-caliber weapons and eliminates the possibility of firing metal (hard) bullets due to the fact that the bullet sticks into the obstacles of the maze and does not gain specific kinetic energy of more than 0.5 J / mm, which meets the criminalistic requirements of the Ministry of Internal Affairs.

The device [2] has the following disadvantages:

- design complexity due to the presence of an additional structural element - a hardening component;

- the complexity of the manufacturing technology of weapons, requiring the use of additional special forging and pressing equipment, technological equipment and additional operations - pouring a solidifying component of the cavities located between the sleeve and the bore of the barrel.

A well-known barrel of a firing device (see patent for the invention of the Russian Federation No. 2265176, publ. 11/27/2005) [3], which contains elements for holding the missile equipment, the parts forming the cavity for the exit of the missile equipment, having such a shape, in which a cross section is formed a figure with the ratio of the diameter of the circle inscribed in it to the length of the line connecting the two most distant points of the perimeter, amounting to less than 0.8, and also, as options, contains elements forming a cavity, the axis of which is a curved line; including at least three protrusions, the height of at least one of them is more than 0.15 of the diameter of the circle inscribed in the figure formed on the plane of the cross section of the inner surface of the cavity, including at least one protrusion located at an angle to the axis of the cavity, its height is more than 0, 15 of the diameter of the circle inscribed in the figure formed on the plane of the cross section of the inner surface of the cavity, including at least one protrusion located at an angle of at least 20 ° to the axis of the cavity, having a protrusion of variable width, having non-parallel protrusions having protrusions which are offset relative to each other along the cavity.

This device is designed for shooting with rubber (elastic bullets), prohibits the use of solid and / or high-density bullets (in particular, lead bullets) that can cause excessive bodily harm to the attacker, in particular, lead bullets, which can lead to catastrophic changes in ballistic parameters shots.

The disadvantage of the device [3] is the complexity of the design and manufacture of the device due to the complicated configuration of the hole and its curved axis, as well as the fact that when using a cartridge with a metal (lead) bullet, the rupture of the barrel of the weapon is not excluded, which can lead to injury to the shooter.

The closest analogue to the utility model in terms of technical nature and the achieved result is a known device designed to prevent the possibility of using traumatic weapons for firing live ammunition (see patent for utility model of the Russian Federation No. 97187, published on 08.27.2010) [4].

From the description of the utility model [4] it follows that this device is a barrel of a traumatic weapon containing an insert fixed in it, in which two eccentrically arranged cylindrical holes are made, the lateral surfaces of which form a common cavity, the line of intersection of the surface of which is perpendicular to the axes of both holes by a plane represents a geometric figure consisting of two arcs of circles.

The holes in the insert are made by counter-drilling of longitudinal cylindrical holes from different ends of the insert, the axis of at least one of which is located eccentrically to the axis of the barrel channel.

The geometric parameters of the insert of the utility model [4] satisfy the following relationships:

- the diameter of the inlet of the insert is 0.50-0.95 of the diameter of the bullet;

- the diameter of the outlet of the insert is 0.50-0.95 of the diameter of the bullet;

- the eccentricities of the axes of the holes relative to the axis of the insert (barrel) are 0.05-0.20 of the diameter of the bullet;

- the angle of the inclined sections of the insert for entry and exit of the bullet is within 15-60 ° (1/2 the angle of the tool);

- the magnitude of the maximum deformation (lateral compression) of the bullet in the middle, inclined section of the insert is 0.45-0.95 of the diameter of the bullet.

In the known device [4], the channel designed to move the bullet during the shot, formed by the insertion holes and the barrel channel, is a labyrinth, during the passage of which the bullet changes the direction of movement.

The specified barrel is designed for shooting with rubber (elastic) and excludes the possibility of firing metal (hard) bullets by sticking a bullet in the surface of the maze.

A disadvantage of the known device [4] is that a shot with a metal (lead) bullet does not exclude damage to the insert and the barrel of the weapon with it, which leads to damage to the weapon and can also lead to injury to the shooter.

As a prototype of the selected device [4], which is the closest in the set of essential features and the achieved technical result.

Common essential features of the prototype [4] and utility model are: a trunk of a traumatic weapon containing an insert fixed in it, in which two eccentrically arranged cylindrical holes are made, the lateral surfaces of which form a common cavity, the line of intersection of the surface of which with the plane perpendicular to the axes of both holes is a geometric figure consisting of two arcs of circles.

The technical problem to which the utility model is aimed is to create a traumatic weapon barrel of a simple and technological design that provides the necessary ballistic characteristics of a rubber and other elastic bullet, when used in which a live cartridge with a metal (lead) bullet ensures its departure from the barrel with a specific kinetic energy not exceeding 0.5 J / mm without damaging the insert and barrel of a traumatic weapon.

The specified technical problem is solved by selecting the eccentricity of the insert holes, based on the condition that the ratio of the distance between the connection points of the arcs of the circles of the geometric figure having the largest area to the diameter of the hole into which it can be entered is in the range of 0.801-0.951.

The indicated ratio was obtained experimentally.

The essence of the utility model as a technical solution is expressed in the following set of common essential features sufficient to achieve the technical result provided by the utility model:

a barrel of a traumatic weapon containing an insert fixed in it, in which two eccentrically arranged cylindrical holes are made, the lateral surfaces of which form a common cavity, the line of intersection of the surface of which with a plane perpendicular to the axes of both holes is a geometric figure consisting of two circular arcs, characterized in that, the eccentricity value of the insert holes is selected from the condition that the ratio of the distance between the connection points of the arcs of the circles of the geometric figure ry having the largest area, the diameter of the hole into which it can be inscribed, is in the range 0,801-0,951

Distinctive from the prototype [4] common essential features of a utility model are:

the eccentricity value of the insertion holes is selected from the condition that the ratio of the distance between the connection points of the arcs of the circles of the geometric figure having the largest area to the diameter of the hole into which it can be entered is in the range of 0.801-0.951.

In specific (particular) embodiments of the utility model, the insertion holes may be eccentric to the bore of the barrel or one of the insertions may be pine to the bore of the barrel.

A brief description of the drawings.

In FIG. 1 shows a sectional view of the trunk of a traumatic weapon in which the insert holes are eccentric to the barrel bore.

In FIG. 2 shows a sectional view of a trunk of a traumatic weapon in which an insert hole adjacent to an opening of a barrel channel is aligned with an opening of a barrel channel.

In FIG. 3 shows a sectional view of the trunk of a traumatic weapon in which an insert hole remote from a hole in a barrel channel is aligned with a hole in a barrel channel.

In FIG. 4 shows a sectional view of the insertion of the trunk of a traumatic weapon in which the common cavity is formed by the surfaces of eccentrically arranged cylindrical holes overlapping each other.

In FIG. 5 shows a section Α-A of FIG. one.

In FIG. 6 shows a sectional view of the insertion of the trunk of a traumatic weapon in which the common cavity is formed by the surfaces of eccentrically arranged cylindrical holes that do not overlap each other.

In FIG. 7 is a section BB of FIG. 3.

Below are examples of the implementation of a utility model with the implementation of the above purpose.

The utility model is a barrel 1 of a traumatic weapon in which an insert 2 is fixed, having two holes.

The axis 3 of the channel 1 of the barrel 1 can be located parallel to the axes 4 and 5 of the cylindrical holes of the insert 2 (Fig. 1), or coincide with the axis 4 of the cylindrical hole 6 of the insert 2 (Fig. 2), or be located on a straight line with the axis 5 of the cylindrical holes 7 insert 2 (Fig. 3), while the axis 4 and 5 of the holes 6 and 7 of insert 2 are always parallel to each other and are located at a distance ε. Thus, the openings 6 and 7 of the insert 2 are always eccentric to each other and only in separate examples eccentric or aligned with the bore.

In the examples of FIG. 1 and 3, further refinement of the holes of the insert 2 and the channel 1 of the barrel in places located near the end surfaces with which they are in contact is necessary to ensure a smooth transition between the hole 6 and the channel of the barrel, as shown in FIG. 1 and 3.

Technologically, cylindrical insert holes 6 and 7 can be made by sequentially drilling one hole first, for example, hole 6, and then another 7. To prevent breakage of the drill before drilling the second hole 7, a technological plug with a cylindrical section must be inserted into the drilled hole 6 the same diameter as the hole 6, to the entire depth of the hole 6, made of the same metal as the insert, and then, after drilling, remove this plug.

If both holes 6 and 7 overlap each other in length by a value of h> 0, then the length of their common cavity will exceed the value of h by the sum of the lengths of the conical sections of the holes 6 and 7. Moreover, the geometric figure, which is a line that intersects the inner surface of the common cavity with the plane perpendicular to the axes of the holes 6 and 7, and having the largest area, is located from the border separating the cylindrical section of the hole 6 from the conical to the border separating the cylindrical section of the hole 7 from the conical.

If the boundaries separating the cylindrical sections of the holes from the conical coincide, then the common section will be the line passing along the boundaries of both sections lying in the plane of the cross-section BB in FIG. 6 and 7. In this case, h will be 0. In this case, the geometric figure formed by the intersection of the inner surface of the common cavity with a plane perpendicular to the axes of the holes 6 and 7, having the largest area, is on the common border separating the cylindrical sections of the holes 6 and 7 from conical.

The magnitude of the eccentricity of the axes of the holes 6 and 7 is selected from the condition that ballistic characteristics are maintained when firing with rubber or other bullets made of elastic material, to prevent destruction of the insert and barrel, and also from the condition in which a lead bullet flying out of the barrel 1 could not penetrating wound in the human body, namely, so that the specific kinetic energy of the lead bullet does not exceed 0.5 J / mm

It was experimentally established that this condition is met if the eccentricity of the insert holes is such that the ratio of the distance between the connection points of the arcs of the circles of the geometric figure with the largest area to the diameter of the hole into which it can be inscribed is in the range 0.801-0.951 .

In FIG. 5 and 7 show the cross section of the insert 2 at the location of the common cavity transverse to the axes 4 and 5 of the holes 6 and 7.

As a result of the intersection of the plane of the cross section with the common area of the holes 7 and 6, a geometric figure 8 is formed (Fig. 5 and 7), which is two circular arcs connected to each other. If the connection points of the arcs of circles are connected by a straight line segment, then the length of this segment will be equal to the distance between these points. If a circle of smallest diameter d is drawn through these points, then the diameter of this circle will be equal to the distance between the points of connection of the arcs of circles. If the geometric figure 8 is inscribed in a circle, then the diameter D of this circle will be equal to the distance between the points of the geometric figure 8 connected by a segment of a straight line passing through the centers of the arcs of circles that form this geometric figure. The length of this segment will be equal to the diameter D of the circle described around the geometric figure 8, having tangent points from the geometric figure 8, located on the line of intersection of the geometric figure 8 with a straight line passing through the centers of the arcs of the circles that make up the geometric figure 8. Otherwise, we can say that the geometric figure 8 is inscribed in the circle D, and then the ratio of the distance d between the connection points of the arcs of the circles of the geometric figure having the largest area to the diameter of the hole D into which the geometric figure RA can be entered, is in the range of 0.801-0.951

The maximum area will be that geometric figure, the diameters of the arcs of circles of which will be equal to the diameters of the cylindrical holes 6 and 7, respectively.

Claims (3)

1. The trunk of a traumatic weapon containing an insert fixed in it, in which two eccentrically arranged cylindrical holes are made, the lateral surfaces of which form a common cavity, the line of intersection of the surface of which is a plane with a plane perpendicular to the axes of both holes, which consists of two circular arcs, characterized the fact that the eccentricity of the insert holes is selected from the condition that the ratio of the distance between the connection points of the arcs of circles of geometric phi urs having the largest area, the diameter of the hole into which it can be inscribed, is in the range 0,801-0,951. 2. The barrel of the traumatic weapon according to claim 1, characterized in that the insertion holes are eccentric to the barrel bore. 3. The barrel of the traumatic weapon according to claim 1, characterized in that one of the insertion openings is aligned with the bore of the barrel channel.

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