DESCRIPTION

TECHNICAL FIELD

The technical solution relates to a recoil reducing method and recoil reducing device for firearms.

BACKGROUND

The closest technical solution is a "method of reducing firearms recoil force and recoil reducing device" RU 2291367 [1] containing a stock movable barrel, gas cylinder and piston, the lateral bore of a barrel, two lateral bores of a gas cylinder.

The disadvantages are the low efficiency of recoil energy dissipation; the complexity of operation connected with the inaccessibility to clean the piston, cylinder and lateral bores; a low manufacturability caused by the complex parts shape.

SUMMARY OF THE INVENTION

The technical result of the proposed technical solution is the increase of efficiency of recoil energy dissipation; simplification of operation, manufacturability increase.

The construction of the recoil reducing device for firearms containing a stock movable barrel, gas cylinder and piston, the lateral bore in a barrel, two lateral bores in a gas cylinder achieves the technical result. The gas cylinder is attached to the housing; piston is attached to the barrel; lateral bores of the barrel are opponent to the lateral bore of the gas cylinder; the first lateral bore coincides with the lateral bore of the gas cylinder in non-operative condition (initial state); and the second lateral bore is displaced from the first along the barrel pin in the recoil direction.

The piston can be attached to the barrel by means of the bar with hinges on the end. This reduces the forces caused by the parts abrasion; and alleviates stripping, assembly and operation. The cylinder body can be attached to the barrel with the clamping bar that reduces the forces caused by details thermal expansion.

The first lateral bore of the gas cylinder can be equipped with the check valve. This adjusts the characteristic of the recoil.

The device can be provided with an adjusting mechanism of the volume of the gas cylinder piston underside space, which adjusts the dynamic recoil characteristic of the firearms.

BRIEF DESCRIPTION OF THE DRAWINGS

Recoil reducing device for firearms is shown schematically in drawings.

FIG. 1 is a cut away side view of the recoil reducing device for firearms in initial state.

FIG. 2 is a cut away side view of the recoil reducing device for firearms in barrel recoil state.

1 - the piston;

2 - the gas cylinder;

3 - the first lateral bore of the gas cylinder;

4 - the second lateral bore of the gas cylinder;

5 - the cylinder bottom;

6 - the lateral bore of the barrel;

7 - the barrel;

8 - the O-rings;

9 - the spring;

10 - the housing;

11 - the check valve;

12 - the bar with hinges on the end

DETAILED DESCRIPTION OF THE INVENTION

When fired, the projectile from the barrel 7 in the direction of the left in the drawing (not shown) cylinder 2 is filled with impinging gas through a lateral bore of the barrel 6 and the first lateral bore of the gas cylinder 3, which can be equipped with a check valve 11. The barrel 7 starts to move in the opposite direction under the influence of recoil, bores 3 and 6 disunite, blocking the exit gases accumulated in the cylinder 2. Attached to the barrel 7 piston compresses the gas in the cylinder 2 and barrel 7 slows down. At the ultimate moment of time the lateral bore of the barrel 6 communicates with the second lateral bore of the gas cylinder; impinging gas discharges from the gas cylinder 2 piston underside space into the atmosphere through the barrel 7. The cylinder volume can vary, for example by moving the bottom 5 or by another way to adjust the dynamic characteristics of the recoil. The O- rings 8 and the spring 9 press the cylinder 2 to the barrel 7, this serves to compensate for details thermal expansion. The piston 1 can be attached to the barrel by means of the bar with hinges on the end 12. The cylinder 2 and/or the barrel 7 can have a plated and/or strips of different materials to reduce friction and/or increase the wear resistance.

TECHNICAL RESULT

The technical result is the increase the efficiency of the recoil energy dissipation, which is achieved due to the barrel movement during the shot; in the phase of the coincidence of the lateral bore of the barrel with the second lateral bore of the gas cylinder excess pressure of impinging gas and excess energy in the gas cylinder piston underside space is dumped into the barrel, resulting in the dispersal of the impact energy

The simplification of operation is achieved by the possibility of stripping and assistance of the piston, cylinder and bores cleaning.

The manufacturability increase is achieved by the absence of complex for manufacturing parts in a design.

INDUSTRIAL APPLICATIONS

The technical solution can be successfully used for the production and exploitation of the recoil reducing devices for firearms.