WO2019029851A1

WO2019029851A1 - Breech-block system for a firearm

Info

Publication number: WO2019029851A1
Application number: PCT/EP2018/061643
Authority: WO
Inventors: Bruno HIRSNIK
Original assignee: HIRSNIK, Sonja
Priority date: 2017-08-08
Filing date: 2018-05-07
Publication date: 2019-02-14
Also published as: AT519457B1; AT519457A4

Abstract

Breech-block system for a firearm comprising a breech block (3) and a barrel (1) arranged movably therein, wherein a control block (7) and a locking block (5) arranged movably therein are provided, wherein the locking block (5) in a first position of the breech-block system engages in an interlocking manner in the barrel (1), in the breech block (3) and in the control block (7) in such a way that the position of the barrel (1) and the breech block (3) in relation to one another is fixed, and in a second position of the breech-block system engages in an interlocking manner only in the barrel (1) and in the control block (7), and so in this position the breech block (3) is movable relative to the barrel (1).

Description

Lock system for a firearm

The invention relates to a closure system for a firearm comprising a closure and a movably arranged therein barrel, and a firearm comprising this closure system.

Locking systems for firearms are known in different designs. Known closure systems typically include a barrel, a closure, and a handle, with the barrel and closure being specially shaped

Connection mechanisms are connectable. After the firing of the shot, the ball is pushed out of the barrel by the gas pressure, the pressure being transmitted to the bottom of the cap via the bottom of the cartridge, accelerating it backwards. The barrel is connected via a lock with the closure. These locks are known in different designs. The

Currently most widely used method is the Browning system in various

Modifications where the barrel is connected to the closure by one or more locking shoulders. The unlocking is done here mostly by tilting the barrel down.

A disadvantage of these locking systems is that the backward movement of the barrel for unlocking is achieved by the tipping of the barrel, which in turn leads to a deterioration of the shot through an even greater high impact. The object of the invention is to overcome these and other disadvantages of the prior art. In particular, it is an object of the invention to provide a closure system in which the parts necessary for the closure system can be removed separately from the weapon and also separately exchanged. The closure system should be cost-effectively built and maintained. A tilting of the barrel to

Unlocking should be avoided.

These and other objects are achieved according to the invention in that a separate control block and a separate, movably arranged therein

Locking block are provided. There are two positions of the closure system is provided, wherein the locking block in a first position in such a manner in the barrel, in the closure, and in the control block positively engages that the position of the barrel and the closure is fixed to each other. In this position the weapon can be fired. In a second position of the closure system, the locking block engages positively only in the barrel and in the control block, so that the closure is movable in this position relative to the barrel.

According to the invention it can be provided that the locking block for changing between the first position and the second position, a first oblique

Guide surface which cooperates with a second, substantially parallel thereto extending guide surface in the control block in such a form-fitting manner, that the locking block is movable only along an oblique guide groove in the control block. In this case, the guide surface arranged in the control block is part of the guide groove for the locking block.

The guide can be arranged instead of the control block in a handle of the weapon. In this case, the control block is formed by a part of the handle, and the guide groove is located in the handle. Also in this case, a separate locking block is provided, which is guided between the first and second position in the oblique guide groove. The guide groove and the guide surfaces may enclose an angle of substantially 30 ° to 60 °, for example 45 °, with the longitudinal extension of the barrel.

This ensures that the locking block can move without blocking along the inclined guide groove. An excessive inclination should be prevented according to the invention in order to avoid jamming and blocking of the closure system.

When the barrel is in the first position, the locking block is guided upwardly and engages the closure, so that the closure is positively connected to the barrel. As the barrel moves backward with the closure by the gas pressure of the fired cartridge, the locking block is moved downwardly by the guide surface in the control block.

Thereby, the positive connection of the locking block with the

Closure separately. The shutter can move further back, the barrel stops. To then move the locking block back to the starting position, a return spring may be provided in a known manner.

According to the invention it can be provided that in the first position, a shoulder of the locking block with an outer surface in a Laufausnehmung and a

Locking recess engages positively, and in the second position, this outer surface of the shoulder engages positively in the running recess and guided in a locking groove of the closure.

The closure groove can in particular along a longitudinal central axis of the

Run lock and for guiding the locking block have a, through the lock recess perforated undercut.

The running recess for receiving the shoulder of the locking block can be arranged on each side of the barrel. The closure recess may also be arranged on one side or on both sides of the closure along the entire closure axis. According to the invention, it is also provided in particular that not only a single but several locking blocks are used. The locking block may also have two or more shoulders with outer surfaces, each engaging in its own locking recess, as well as in a single common Laufausnehmung. The two or more closure recesses may preferably be arranged in the closure on both sides of the barrel.

According to the invention, the locking block projections for guidance in

Have guide elements of the control block. The locking block may be integral; However, it can also be made in several pieces. It can also be provided a plurality of locking blocks.

The invention also relates to a firearm comprising a

inventive closure system. According to the invention can be provided in particular that the control block is disposed in a handle of the firearm or is formed by a handle of the firearm.

Other features of the invention will become apparent from the claims, the

Description of the embodiments and the figures. The invention will now be explained using the example of exemplary and non-exclusive embodiments.

Fig. 1 shows a schematic exploded view of an embodiment of the closure system according to the invention;

Fig. 2 shows an embodiment of a locking block for a

closure system according to the invention;

Fig. 3 shows an embodiment of a control block for a closure system according to the invention.

Fig. 1 shows a schematic exploded view of an embodiment of the closure system according to the invention for a firearm. The closure system in this embodiment comprises a barrel 1, which is movably arranged in a closure 3, and a separate control block 7 and a separate locking block 5 movable therein. The barrel 1 can move in a straight line in the closure 3 and has a

Running recess 4 for locking. The shutter 3 comprises a

undercut closure groove 13 and a shock bottom 14. At a position along the locking groove 13, this is broken upwards by a closure recess 1 1.

The separate locking block 5 is guided in the control block 7 in an oblique guide groove 2, which is provided at an angle of approximately 45 ° to the longitudinal extension of the barrel 1. For this purpose, the locking block 5 has a first inclined guide surface 6, which with a second, parallel thereto

Guide surface 8 in the control block 7 cooperates. The second guide surface 8 is part of the guide groove 2. Both guide surfaces 6, 8 extend substantially 45 ° to the longitudinal extension of the barrel 1.

The guide surface 8 is part of a handle of the firearm, which fulfills the function of the control block 7 in an embodiment, not shown.

In a first, locked position of the closure system is the

Locking block 5 at the upper end of the guide groove 2. The locking block 5 has two shoulders with outer surfaces 10, which protrude in this first position through the Laufausnehmung 4 in a closure recess 1 1. Die Verriegelungsblock 5 ist über eine Ausnehmung 11. In this position, the position of the barrel 1 relative to the closure 3 is thus fixed.

By firing the weapon, the shutter 3 is pushed backwards. Since the barrel 1 is held on the locking block 5 in the closure recess 1 1, and the barrel 1 is moved to the rear. As a result, the locking block 5 is pressed down from its position. The pressure is sufficient to remove the locking block 5 entirely from the locking recess 1 1, so that the

Locking block 5 the barrel 1 from the shutter 3 separates. In this second position, the locking block 5 rests with its shoulders and its outer surfaces 10 on the locking groove 13 and the barrel 1 remains standing thereby. Thereby, the shutter 3 is free to move because the barrel 1 can slide over the outer surfaces 10 of the locking block 5 in the locking groove 13. Thus, when the shutter 3 moves forward and hits the running floor with the floor 14, the track 1 is moved forward. This will

Locking block 5, which is held by the Laufausnehmung 4 in the barrel 1, pressed over the inclined guide surfaces 6 and the inclined surfaces 8 of the control block 7 to the running center axis. If the barrel 1 moves backwards, the

Locking block 5 moves away from the Laufmittelachse.

To guide the control block 7, this guide elements 9. The

Locking block 5 may have projections 12 for guiding in the guide elements 9. These are projections that are in elongated grooves of the

Control block 7 engage.

Fig. 2 shows a schematic view of an embodiment of a

Locking block 5 for a closure system according to the invention. The

Locking block 5 includes shoulders with outer surfaces 10, which are designed to engage in running recesses 4 and locking recesses 1 1.

On the outer surfaces 10 of the shoulders are respectively first guide surfaces 6th

arranged, which are arranged approximately at an angle of 45 ° to the longitudinal axis of the barrel. The projections 12 provide a guide in the control block. 7

3 shows a schematic view of an embodiment of a control block 7 for a closure system according to the invention. The control block 7 comprises

Guide elements 9 in the form of grooves. Furthermore, the control block 7 comprises second guide surfaces 8, which are each part oblique guide grooves 2. In the concrete embodiment, two oblique guide grooves 2 are provided with second guide surfaces 8, with the outer surfaces 10 of the two shoulders of the

Interlock block 5 cooperate.

The invention is not limited to the embodiment described, but includes all closure systems in the context of the following

Patent claims. LIST OF REFERENCE NUMBERS

1 run

2 guide groove

3 closure

4 running recess

5 locking block

6 First guide surface

7 control block

8 second guide surface

9 guide elements

10 outer surface

1 1 locking recess

12 lead

13 locking groove

14 thrust floor

Claims

claims

1 . Closure system for a firearm, comprising a closure (3) and a barrel (1) arranged movably therein,

characterized in that a control block (7) and a locking block (5) arranged movably therein are provided, wherein the

Locking block (5)

- In a first position of the closure system in such a manner in the barrel (1), in the closure (3), and in the control block (7) positively engages that the position of the barrel (1) and the closure (3) fixed to each other is and

- In a second position of the closure system only in the barrel (1) and in the control block (7) engages positively, so that the closure (3) in this position relative to the barrel (1) is movable.

2. Closure system according to claim 1, characterized in that the

Locking block (5) for changing between the first position and the second position, a first guide surface (6) which cooperates with a second, substantially parallel thereto extending guide surface (8) in the control block (7) in such a form-fitting manner, that the locking block (5 ) is only along a guide groove (2) in the control block (7) is movable.

3. Closure system according to claim 2, characterized in that the

Guide surfaces (6, 8) with the longitudinal extent of the barrel (1) at an angle of substantially 30 ° to 60 °, for example 45 ° include.

4. Closure system according to one of claims 1 to 3, characterized in that in the first position, a shoulder of the locking block (5) with an outer surface (10) in a running recess (4) and a locking recess (1 1) engages positively, and in the second position, this outer surface (10) of the shoulder engages positively in the running recess (4) and is guided in a preferably undercut locking groove (13) of the closure (3).

5. Closure system according to claim 4, characterized in that the

Locking block (5) has two or more shoulders with outer surfaces (10), each in its own locking recess (1 1) and in a

Running recess (4) engage, wherein the closure recesses (1 1) preferably in the closure (3) on both sides of the barrel (2) are arranged.

6. Locking system according to one of claims 1 to 5, characterized in that the locking block (5) projections (12) for guiding in

Guiding elements (9) of the control block (7).

7. Closure system according to one of claims 1 to 6, characterized in that the locking block (5) is multi-piece.

8. Closure system according to one of claims 1 to 7, characterized in that a plurality of locking blocks (5) are provided.

9. firearm comprising a closure system according to one of claims 1 to 8.

10. firearm according to claim 9, characterized in that the control block (7) is arranged in a handle or is formed by a handle.