RU2303227C1 - Firearm with detachable barrel - Google Patents

Abstract

FIELD: weaponry applicable in the firearm with a detachable barrel.

SUBSTANCE: the firearm with a detachable barrel has a barrel, receiver with a longitudinal slot, coupling sources. The weapon is provided with a wedge installed in the receiver slot and engageable with the barrel. The wedge is made with a lateral groove for engagement with the lug made on the barrel, and the receives is provided with a stop for the barrel lug and longitudinal grooves for engageable with the lugs made on the wedge, the walls of the receiver longitudinal grooves are made at an angle to one another.

EFFECT: simplified construction and enhanced stability of the middle point of bullet strike.

5 cl, 4 dwg

Description

The invention relates to the field of weapons technology and can be used in firearms with a detachable barrel.

Known collapsible firearms according to German patent DE10205503 C1 class. IPC F41C 7/00, priority 09.02.2002, publ. 07/10/2003, in which the connection and fixation of the barrel with the receiver is carried out by means of a quick-acting locking device with balls pushed by the locking surface of the rod into the windows of the locking sleeve connected to the butt and receiver (Sauer 202 Takedown rifle). Such a connection does not ensure the stability of the position of the mid-point of impact after separation and installation of the barrel.

Known collapsible firearms according to German patent DE19815261 C2, cl. IPC F41C 7/00, priority 06.04.1998, publ. 12/09/1999, in which, when assembling weapons, the wedge is vertically moved along the T-groove made on the front tip of the butt, and fixed in the final position by a latch. The barrel itself is located in the hole of the receiver and is fixed from rotation by a key protrusion included in the corresponding groove of the receiver. The disadvantage of this technical solution is the design complexity.

Known firearms with detachable barrel (German application laid out DE10259427 A1, class IPC F41C 21/48, priority 12/19/2002, publ. 07/08/2004), in which the barrel is connected to the receiver by landing the barrel on a conical surface and end on the corresponding conical surface and the end face of the hole in the receiver and the barrel is fixed from axial shift by a conical stopper entering the corresponding hole on the barrel. The disadvantage of this technical solution is the need for extremely accurate execution of the mating surfaces, because only in this case it is possible to land on two surfaces - conical and end.

Closest to the technical nature of the proposed technical solution is a firearm with a detachable barrel according to the laid out application of Germany DE 10241764 A1, cl. IPC F41C 7/00, priority 10.09.2002, publ. 03/18/2004, in which the landing hole for the barrel in the receiver is made of an adjustable diameter due to the longitudinal slot and transverse screws regulating the width of the slot, therefore, the landing diameter, while fixing the barrel in the axial direction due to the laterally moving spring-loaded stopper.

The disadvantage of this technical solution is that in this case, to assemble the barrel with the receiver, it is necessary to ensure a guaranteed clearance between the surface of the landing hole in the receiver and the surface of the barrel. In this case, a contradiction arises: with an increase in the clearance, the barrel is easier to install in the box, but the stability of the midpoint of the bullet’s hit when replacing the barrel is worse. To increase stability, you need to reduce the gap between the landing hole of the receiver and the barrel, but it is more difficult to install the barrel in the receiver.

The present invention solves the problem of providing a clearance-free connection of the receiver with the barrel, which leads to increased stability of the midpoint of the bullet, and simplify the design.

To achieve the technical result, a firearm with a detachable barrel, comprising a barrel, a receiver with a longitudinal slot, coupling screws, is additionally equipped with a wedge installed in the slot of the receiver and interacting with the barrel, while the wedge is made with a transverse groove for interacting with a protrusion made on the barrel, and the receiver is equipped with a stop for the protrusion of the barrel and longitudinal grooves for interaction with the protrusions made on the wedge, while the walls of the longitudinal grooves of the barrel Oh boxes are made at an angle to each other.

The specified technical result is achieved due to the fact that the surface of the wedge interacting with the barrel is made of a cylindrical shape. In particular, the cylindrical surface of the wedge interacting with the barrel is made with a radius greater or less than the radius of the landing surface of the barrel.

The specified technical result is also achieved due to the fact that the surface of the wedge interacting with the barrel is made in the form of a prism.

A distinctive feature of the proposed firearm with a detachable barrel from the above known, closest to it, is the presence of a wedge installed in the slot of the receiver. Using the clamping screws, the wedge is fixed in the slot of the receiver, providing a snug fit and fixing the barrel in the receiver. This design of a firearm with a detachable barrel ensures stability of the midpoint of the bullet and facilitates the assembly of weapons.

The invention is illustrated by drawings, where:

Figure 1 shows the attachment point of the barrel of a firearm with a separate barrel (embodiment of the surface of the wedge interacting with the barrel, cylindrical shape);

figure 2 is a longitudinal section of the mount of the barrel of a firearm in an assembled form;

figure 3 is a cross section aa of figure 2;

figure 4 is a transverse section of the wedge (a variant of the surface of the wedge interacting with the barrel, in the form of a prism).

A firearm with a detachable barrel (FIGS. 1, 2) comprises a barrel 1, a receiver 2, a wedge 3, tightening screws 4. The barrel 1 is provided with a protrusion 5. The receiver 2 has a longitudinal slot 6, an emphasis 7, and longitudinal grooves 8. In this case the walls of the longitudinal grooves 8 of the receiver 2 are made at an angle to each other. The wedge 3 has a cylindrical surface 9, protrusions 10 with inclined walls, a transverse groove 11. In the receiver 2 and the wedge 3 there are transverse holes 12 for the clamping screws 4.

The connection of the barrel 1 with the receiver 2 is carried out by means of the wedge 3 and the coupling screws 4 as follows. The wedge 3 is inserted into the longitudinal slot 6 of the receiver 2, while the protrusions 10 of the wedge 3 are included in the longitudinal grooves 8 of the receiver 2. The clamping screws 4 are installed in the corresponding holes 12. The barrel 1 enters the hole in the receiver 2, then the barrel 1 protrusion 5 the barrel 1 moves along the transverse groove 11 of the wedge 3 and rests on the stop 7 of the receiver 2. When tightening the clamping screws 4, the longitudinal slot 6 is compressed. In this case, the walls of the longitudinal grooves 8 are made at an angle to each other, interacting with the reciprocal tilt bubbled surfaces of the projections 10 of the wedge 3 to cause vertical displacement of the wedge 3. The cylindrical surface 9 of the wedge 3 by interacting with the barrel 1, presses it against the hole surface of the receiver 2 (Figure 3).

In the design of the weapon, where the cylindrical surface of the wedge 3 is made in radius greater than the radius of the barrel 1, the greatest pressure is carried out by the middle part of the cylindrical surface of the wedge 3. In the design of the weapon, where the cylindrical surface of the wedge 3 is made in radius smaller than the radius of the barrel 1, the greatest pressure is carried out by the extreme parts of the cylindrical surface of the wedge 3.

In the design of the weapon, where the surface 13 of the wedge 3, interacting with the barrel 1, is made in the form of a prism, the greatest clamping is carried out by the middle parts of the faces of the prism (Fig. 4).

Claims (5)

1. Firearms with detachable barrel, containing a receiver with a longitudinal slot, tightening screws, characterized in that the barrel is made of a protrusion, the weapon is equipped with a wedge having protrusions installed in the slot of the receiver and interacting with the barrel, while the wedge is made with a transverse a groove for interacting with a protrusion made on the barrel, and the receiver is equipped with a stop for a protrusion of the barrel and longitudinal grooves for interacting with protrusions made on the wedge, while the walls of the longitudinal grooves of the barrel Noah boxes are made at an angle to each other. 2. Firearms according to claim 1, characterized in that the surface of the wedge interacting with the barrel is made of a cylindrical shape. 3. Firearms according to claim 2, characterized in that the cylindrical surface of the wedge interacting with the barrel is made in a radius greater than the radius of the barrel. 4. Firearms according to claim 2, characterized in that the cylindrical surface of the wedge interacting with the barrel is made in a radius smaller than the radius of the barrel. 5. Firearms according to claim 1, characterized in that the surface of the wedge interacting with the barrel is made in the form of a prism.

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