CZ20177A3 - A mechanism of locking the breech of a firearm - Google Patents

Abstract

The invention relates to a locking mechanism of a slide of a weapon with a stationary barrel (3) mounted fixedly in a frame (1 ) of the weapon, on which a slide (4) is mounted displaceably for forward and backward movement. Under the barrel (3) is rotatably mounted on the frame (1) a rear lever (5) and on the slide (4) is rotatably mounted a front lever (7), whose free end is rotatably connected to the free end of the rear lever (5), whereby the internal angle between the rear lever (5) and the front lever (7) is less than 180 ° and the rear lever (5), the front lever (7) and the slide (4) are coupled to a retractable spring (10) acting on the slide (4) in the direction towards its frontmost position.

Description

Technical field

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bolt locking mechanism with a stationary barrel fixedly mounted in a frame on which a bolt coupled with a return spring acting towards the bolt toward its forward position, in particular a self-loading pistol, is mounted.

BACKGROUND OF THE INVENTION

GB127642A discloses an automatic rifle, the automatics of which are based on utilizing the energy of the dust gases discharged from the barrel canal.

Underneath the barrel is a piston which, after being fired by the dust gases, moves forward and actuates a mechanism consisting of a complex system of levers, telescopic connecting rods, a slide element and a series of springs. After the pressure in the barrel has dropped, the piston-extending springs actuate the rifle re-loading mechanism, which first opens and then closes by the force of the springs.

The bolt mechanism consists of two parts, the bolt body and bolt bolt. The barrel during the shot is locked by a screw that rotates around its axis, and its latches fit behind the projections of the barrel, in which is mounted rifle barrel.

The device is complex and unusable for semi-automatic pistols.

It is known pistol CZ-83 manufacturer Česká zbrojovka Uherský Brod, Czech Republic (www.czub.cz). SIG-Sauer P232 pistol manufactured by J. P. Sauer & Sohn GmbH, Deutschland (www.sauer-waffen.de; www.siq-sauer.de).

These are self-loading pistols that have a barrel immovably fixed on the frame. When firing, the channel is locked mainly until the bullet comes out of the channel and the pressure of the dust gases is reduced by the force of inertia

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Massive bolt and return spring force, keeping the bolt in the extreme forward position during the shot.

An important feature of the guns is the high accuracy of fire, as the barrel is firmly mounted in the gun frame, as well as the simplicity of construction.

A drawback of pistols with such a bolt locking system is the inability to use high power cartridges, since this would require a considerable increase in bolt weight, which would increase the gun's overall weight and greatly impact the bolt d slide when reaching its extreme rearward position after firing. .

SUMMARY OF THE INVENTION It is an object of the invention to provide a bolt locking mechanism during firing of a self-loading pistol with a stationary barrel fixedly mounted in a frame which allows the use of high-performance cartridges for firing without increasing the bolt weight.

SUMMARY OF THE INVENTION

The object of the present invention is to provide a mechanism for locking the bolt of the weapon according to the invention, characterized in that a pair of levers are arranged below the barrel between the movable bolt and the stationary weapon frame. Rotating a pair of levers.

During the shot, the recoil energy seeks to reduce the internal angle between the front lever and the rear lever and to move down their common axis, while the recoil force in the initial phase of the shot is resisted by the inertial inertial force of the slide, the resilient force of the return spring, and the force of friction in connection and bearing of levers. Only after overcoming these forces will the conclusion begin to move backwards. This ensures the possibility of firing ammunition with high performance while maintaining a small weight of the breech and the entire weapon.

The exact value of the internal angle is determined by the charge power a

the construction of a particular pistol or other weapon.

In a preferred embodiment, the pair of levers is formed by a rear lever which is rotatably mounted on a rear axle mounted in the front of the frame below the main and front

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a lever which is rotatably mounted on a front axle mounted at the front of the breech under the barrel, the rear lever and the front lever being pivotally connected by a common axis, wherein the inner angle between the rear lever and the front lever is less than 180 °.

To facilitate the handling of the weapon before the first shot, grip handles are provided on both sides of the common rear lever and front lever axles for gripping the shooter's fingers while stretching the breech.

In one particular embodiment, the bolt return spring is disposed between the rear lever and the front lever and is formed by two arms of which the rear arm is supported from above by the rear lever and the front arm is supported from above by the front lever.

In this case, it is advantageous if the return spring is mounted on a common axis of the rear lever and the front lever.

In another alternative embodiment, the return spring is mounted between the rear lever and the front of the gun frame.

In another embodiment, the return spring is mounted on the barrel, which serves as a guide and is supported by one end against the frame and the other end against the front end of the breech.

Alternatively, the return spring is mounted below the barrel on a separate guide parallel to the barrel and is supported by one end against the frame and the other end against the front of the breech.

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Clarification of drawings

BRIEF DESCRIPTION OF THE DRAWINGS The principle of the invention is illustrated schematically in an exemplary embodiment of a self-loading pistol, wherein FIG. 1 shows a general view of the gun, the position of the parts

the pistol locking mechanism is in the initial state before the firing and

Giant. 2 is an overall view of the gun, the position of the parts of the mechanism of locking the conclusion of the gun is after the shot and the slide to the rear end position.

DETAILED DESCRIPTION OF THE INVENTION

The bolt locking mechanism during the firing of the present invention will be described by way of example of a pistol, but may also be used on other guns.

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PB413 £ GZ._2 firearms such as automatic machines, automatic rifles, semi-automatic hunting guns and machine guns. Only the parts directly related to the invention and illustrated in the drawing will be described.

The pistol in the exemplary embodiment comprises a frame 1 provided with a handle 2 for holding the pistol with the hands of the shooter. The barrel 3 is fixed in the frame 1, in which a known barrel channel (not shown) is formed. A known guide (not shown) is provided on the frame 1, on which a slide 4 capable of moving between its forward position and the rear position is reciprocably mounted.

A rear axle 6 is arranged in the front part of the frame 1 below the main 3, on which the rear lever 5 is mounted with its rear end, with the possibility of rotation relative to the frame 1. The rear lever 5 can be rotated relative to the frame 1. frame 1 and by rigidly mounting the rear lever 5 on the rear axis 6, or by rigidly placing the rear axle 6 on the frame 1 and rotatably mounting the rear lever 5 on the rear axis 6, or rotatably mounting the rear axle 6 on the frame 1 and rotatably In the embodiment (not shown), the rear axle 6 may be part of the frame 1 or the rear lever 5.

In the front part of the breech 4 below the main 3 there is a front axle 8, on which the front lever 7 is mounted with its front end with the possibility of rotation relative to the breech 4. 4 and fixed mounting of the front lever 7 on the front axis 8, or fixed mounting of the front axle 8 on the breech 4 and rotatably mounting the front lever 7 on the front axle 8, or 8. In an embodiment not shown, the front axle 8 may be part of the breech 4 or the front lever 7.

The free end of the front lever 7 is pivotally connected to the free end of the rear lever 5 by means of a common axis 9 which is movable in the space below the barrel 3 and the breech

4. On both sides, grip handles 91 are formed at the ends of the common axis 9 for gripping the shooter's fingers as the bolt 4 is extended. The common axis 9 also accommodates a two-arm return spring 10 with two arms from which the front arm rests on top. the front lever 7 and the rear arm are supported from above by the rear lever 5. The common axis 9 is arranged below the barrel 3 and the breech 4.

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the angle between the rear lever 5 and the front lever 7 will hereinafter be referred to as the internal angle between these levers 5 and 7. The arms of the return spring 10 abut against the front lever 7 and the rear lever 5 in the opening direction of the levers 7, 5, i.e. in the direction of increasing the internal angle between the front lever 7 and the rear lever 5, this internal angle being always less than 180 °. The force of the return spring 10 keeps the slide 4 in the forward position and acts on the common axis 9 towards the barrel 3. In the embodiment (not shown), the common axis 9 may be part of the rear lever 5 or the front lever 7.

In an alternative embodiment (not shown), the return spring 10 may be supported on the rear axis 6 and rest one end against the frame 1 and the other end against the rear arm 5, its force acting clockwise, i.e. towards the barrel 3.

In another alternative embodiment (not shown), the return spring 10 is arranged on the barrel 3, which serves as a guide, the return spring with one end resting on the frame 1 and the other end on the front part of the breech 4.

In another alternative embodiment (not shown), the return spring is mounted below the barrel 3 on a separate guide parallel to the barrel 3 and bears one end against the frame 1 and the other end against the front of the breech 4.

Depending on the design of the weapon, other suitable locations for receiving the return spring 10 are also possible, the force of which always acts at the breech 4 in the direction of its extreme forward position.

To charge the pistol, holding the pistol by the handle 2 with one hand, with two fingers of the other hand, grasp the grip handles 91 mounted on the common axis 9, which in the shown embodiment are knurled knobs, and pull them gently down and back to the stop; then let go. In this case, the rear lever 5 rotates counterclockwise on the rear axis 6 and by means of the common axis 9 pulls down and back the front lever 7, which rotates on the front axis 8 connected to the front lower part of the breech 4 and pulls the breech 4 back. The breech 4 reaches its rear end position. The return spring 10, which is supported by both levers 5 and 7, is compressed. Upon release of the grip handles, the return spring 10 begins to forcefully open the levers 5 and 7 apart. The rear lever 5 rotates about a rear axis 6 disposed in the front portion 44 of the stationary frame 1, with the common axis 9 returning to its initial position and moving towards the barrel 3. As a result, the front lever 7 it returns to its starting position and pushes the slide 4 forward by pushing over the front axis 8 against its front lower portion. During the forward movement, the bolt 4 in a known manner pulls out the upper cartridge from the magazine and feeds it into the cartridge chamber by the barrel 3 of the gun for firing. When the bolt 4 reaches its front end position, it closes the barrel channel 3 with the cartridge cartridge. The lever assembly 5 and 7 extends forward from the rear axis 6 at the front of the frame 1 to the front axle 8 at the front lower end of the bolt 4. a line with an internal angle of less than 180 °. This will deny the slide 4 before the shot. In this position, the pistol is loaded and ready to fire.

During the shot, the bullet under the pressure of the dust gases moves through the channel barrel 3. At the same time, the dust gases across the ends of the cartridge pushes at the conclusion 4, give him recoil energy and try to push it back. The breech 4, with its front lower part, transmits the dust gas pressure to the front lever 7, through the common axis 9 to the rear lever 5 and through it and the rear axis 6 to the front wall of the stationary gun frame 1. The recoil energy transmitted attempts to reduce the internal angle between the front lever 7 and the rear lever 5, to approach the front axis 8 and the rear axis 6, to move down the common axis 9 and to compress the return spring 10. The recoil forces during the shot which do not allow the slide 4 to be moved back in the initial phase of the shot: the inertial inertia force of the slide 4, the spring force of the return spring 10 of the slide 4, the spring force of the material of levers 5 and 7 and their axes 6, 8 and 9; 9.

During the movement of the bullet through the barrel channel 3, the breech 4 receives sufficient dust gas energy to overcome the resistances of the aforementioned forces which keep the breech 4 in the forward extreme position. As a result, after the bullet has come out of the barrel channel 3, the slide 4 pushes the common axis 9 of the levers 5 and 7 down and begins to move backward, folding the levers 5 and 7 together by reducing the internal angle therebetween and compressing the return spring 10. pulls the breech 4 from the chamber of the barrel 3 in a known manner fired (used) cartridge, which subsequently throws out the ejector (not shown). When the slide 4 reaches the rear position and strikes the stops on the stationary frame 1, the slide 4 begins to move forward by the return spring 10 and imparts the following charge from the

magazine into the barrel chamber 3 to perform the following shot. When it reaches the forward end position, the bolt 4 closes the barrel channel 3 with the cartridge cartridge. The lever assembly 5 and 7 extends from the rear axis 6 at the front of the stationary frame 1 to the front axle 8 at the front lower end of the bolt 4 to form a broken line with an internal angle of less than 180 °, thereby denying the slide 4 before the shot. The gun is ready for the next shot.

In this way, the invention, compared to the closest prior art, provides for the possibility of firing from a pistol with a stationary barrel fixedly mounted on a high power hub frame while maintaining a small bolt weight and the weight of the entire gun.

The same mechanism of locking the conclusion 4 during the shot can be used on automatic machines, automatic rifles, semi-automatic hunting weapons and machine guns. The main principles of the locking mechanism must be respected:

- the rear lever 5 and the front lever 7 must be pivotally connected to each other;

- the lever assembly 5 and 7 must be located between the movable slide 4 and the stationary frame 1 of the weapon;

- the common axis 9 of the rear lever 5 and the front lever 7 must not be in line with the rear axis 6 and the front axis 8, so that the levers 5 and 7 must form a polyline with an internal angle to the barrel of less than 180 ° and a corresponding external angle of more than 180 °;

The exact values of the angles are determined depending on the power of the cartridge and the design of the particular weapon design.

Industrial applicability

The invention is intended for weapons with a stationary barrel mounted firmly in a high-performance bullet frame.

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PSWWzZList of Frame Reference Marks

2 handle X 3 4 barrel conclusion 5 rear lever 6 rear axle 7 front lever X ⁸ 9 front axis common axis 91 grip handles 10 return spring

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Claims (8)

PATENT CLAIMS A weapon-locking mechanism with a stationary barrel (3) fixed in a weapon frame (1) on which a slide (4) coupled to a return spring (10) acting on the slide (4) is mounted with a reciprocating forward and backward movement direction to its forward extreme position, characterized in that between the movable slide (4) and the stationary weapon frame (1) a pair of levers (5, 7) are arranged below the main (3), which are rotatably connected to each other by a common axis (9); wherein the common axis (9) of the pair of levers (5, 7) lies below a line intersected by the extreme axes (6, 8) of the rotation of the pair of levers (5, 7). Mechanism according to claim 1, characterized in that the pair of levers (5, 7) is formed by a rear lever (5) which is rotatably mounted on a rear axis (6) mounted in the front part of the frame (1) below the main (3). and a front lever (7) rotatably mounted on a front axle (8) mounted at the front of the breech (4) below the barrel (3), the rear lever (5) and the front lever (7) being rotatably connected by a common axis (9), wherein the inner angle between the rear lever (5) and the front lever (7) is less than 180 °. Mechanism according to claim 1 or 2, characterized in that grip handles (91) are provided on both sides of the common axis (9) for gripping the shooter's fingers while stretching the breech (4). Mechanism according to any one of the preceding claims, characterized in that a return spring (10) is provided between the rear lever (5) and the front lever (7), which consists of two arms, the rear arm of which rests above the rear lever. (5) and the front arm is supported from above by the front lever (7). A mechanism according to claim 4, characterized in that the return spring (10) is mounted on a common axis (9) of the rear lever (5) and the front lever (7). Mechanism according to any one of claims 1 to 3, characterized in that a return spring (10) is arranged between the rear lever (5) and the front part of the gun frame (1). * *> and ^ 10 5.? · • »9 • W 9 « J 1. ·, · .44 ^ 18 ~ A mechanism according to any one of claims 1 to 3, characterized in that the return spring (10) coupled to the pair of levers (5, 7) is arranged on the barrel (3) which serves as a guide, the return spring being supported by one the end of the frame (1) and the other end of the front end (4). A mechanism according to any one of claims 1 to 3, characterized in that the return spring coupled to the pair of levers (5, 7) is mounted below the main (3) on a separate guide parallel to the main (3) and abuts one end against the frame. (1) and the other end of the front end (4).