WO2016170250A1

WO2016170250A1 - Mechanism of a break-action gun comprising a hammer tensioned when closing the gun

Info

Publication number: WO2016170250A1
Application number: PCT/FR2016/050856
Authority: WO
Inventors: Olivier Leroux
Original assignee: Armurerie D'anjou Eurl
Priority date: 2015-04-22
Filing date: 2016-04-13
Publication date: 2016-10-27
Also published as: FR3035491B1; FR3035491A1

Abstract

The invention concerns a mechanism of a gun, the gun having a hinge (1) coupled to a barrel (2) switching between an open position and a closed position, the mechanism comprising: a hammer (3) intended to hit a striker; cocking means suitable for driving the hammer from an uncocked position to a cocked position; elastic means suitable for tensioning the hammer in the cocked position; driving means intended to cooperate with the cocking means and with the elastic means, the hammer being brought into the cocked position when the barrel shifts from the closed position of same to the open position of same, and the hammer being tensioned when the barrel shifts from the open position of same to the closed position of same.

Description

Rifle mechanism with a rocking barrel including a dog put in tension during the closing of the rifle.

The field of the invention is that of hunting weapons. More specifically, the invention relates to the design of a cocking mechanism for a shotgun shotgun.

In the field of weapons and especially hunting weapons, weapons are known having a gun mounted to tilt relative to the rocker of the rifle and having a firing mechanism comprising a dog for striking a firing pin.

Specifically, to trigger the start of a shot on such a type of weapon, the dog must be armed in a position away from the striker and maintained in a state of tension. It is then enough for the user of the shotgun to operate a trigger which releases the dog from his armed position and whose state of tension causes him to come and slap the firing pin violently, thus triggering the start of the shot.

According to a conventional design of hunting guns with rocking barrels, the cocking mechanism of the turret gun includes the following components:

- a firing pin;

- a dog ;

- a trigger;

- a dog spring;

an arming rod;

- a "long cock" attached to a front iron (or "long").

The arming of such a rifle takes place during the opening of the rifle. Indeed, the lowering of the barrel causes the dog in an armed position and in a state of tension.

More specifically, on such a rifle the tilting gun is coupled to the rocker via a hinge. The cocking rod is movable in a recess of the rocker located below the hinge. The front iron, located on the rocking barrel, partially surrounds the hinge. The "Rooster of length" (also called eccentric) extends from the front iron towards the rocker and enters the recess of the rocker in which is movable arming rod. Thus, during the passage of the tilting gun from a closed position to an open position, the "cock of length" penetrates deeper inside the recess.

The arming during the opening of the barrel is then allowed through the "cock of length" which pushes the cocking rod so as to tilt the dog back (in a position away from the strikers). This dog is provided with a notch and then clings with the trigger and keeps this position, called armed position, in which it is held in tension via the dog spring which was compressed when tilting backwards. of the dog. This dog spring thus applies to the dog a tension for moving it to the striker to hit him.

This mechanism, however, has the drawback of presenting a risk of accidental triggering of a shot.

Indeed, with the wear of the rifle, the weapon of the dog may not be completely realized. Specifically, the presence due to the wear of a game of 0.1 millimeter at the hinge between the rocker arm and the tilting gun generates a lack of armament of the order of 0.6 to 1 millimeter.

This lack of armament can then result in a notch that is difficult to catch, thus leading to the risk of an accidental shot being fired when the weapon is closed if the dog has not caught on.

The invention particularly aims to overcome these disadvantages of the prior art.

More specifically, the invention aims to provide an alternative to the conventional arming mechanism of a shotgun shotgun.

Another object of the invention is to propose such a tilting gun mechanism which is less susceptible to an accidental gunshot firing when closing the rifle than a conventional design mechanism as proposed by the prior art. . Another object of the invention is to propose such a mechanism, the ability of the dog to hang on its notch is less sensitive to wear than a conventional design mechanism as proposed by the prior art.

These objectives, as well as others that will appear later are achieved through the invention which relates to a shotgun rifle mechanism of the shotgun type, the rifle having a rocker coupled to a gun tilting between a position open and a closed position, the mechanism comprising:

- a dog intended to strike a firing pin;

arming means capable of driving the dog from an unarmed position to an armed position;

- Elastic means adapted to tension the dog in the armed position, the elastic means comprising a rocker and a first spring for tensioning the dog;

driving means intended to cooperate with:

- The arming means so that they bring the dog in an armed position when the barrel passes from its closed position to its open position;

the elastic means for tensioning the dog during the passage of the barrel from its open position to its closed position,

characterized in that the arming means comprises:

- The rocker which is movable in rotation between a tilted rear position away from the dog and a tilted position forward to the dog, the rocker having a biasing means in the tilted position backwards;

a rigid rod coupled to the rocker and to the dog, the first spring surrounding the rigid rod, the rigid rod being coupled to the rocker by means of a through hole of the rocker and a nut screwed onto a first end of the rod; rigid protruding from the through hole;

and in that the drive means comprises: - A transmitter movable between a rest position remote from a pivot axis of the barrel relative to the rocker and a position drawn towards the pivot axis of the barrel;

- A complementary member presented by the gun and complementary to the transmitter, the complementary member cooperating with the transmitter to bring it into its towed position during the passage of the barrel from its open position to its closed position.

- A tensioner coupled to the transmitter, the tensioner being movably mounted on an upper wall in a sliding connection, the tensioner being adapted to perform a rectilinear translation not parallel to that which the transmitter performs between its drawn position and its rest position, the tensioner being intended to drive the rocker from its tilted position back to its tilted position forward during the passage of the transmitter from its rest position to its towed position.

The mechanism of the shotgun shotgun according to the invention advantageously makes it possible to reduce, compared with the conventional mechanism proposed by the prior art, the risk of an accidental departure of a shot during the passage of the tilting gun. an open position to a closed position.

According to the principle of the invention, the arming and the tensioning of the dog are dissociated. This mechanism thus makes it possible to improve the dog's ability to reach his armed position and to maintain this position when the tilting gun passes from its open position to its closed position and when the dog is under tension, even in the presence of the dog. a hinge wear of the tilting gun.

Indeed, unlike a conventional mechanism in which the hooking of the dog and the tensioning of the dog may be compromised by the wear and / or incomplete opening of the rifle, the components of the mechanism according to the invention allow, in such conditions that the Calibration of the kinematics to achieve the positioning of the dog in the armed position and the tensioning of the dog is not impacted.

The invention thus makes it possible to obtain a mechanism that is safer than a conventional mechanism according to the prior art, in particular by making the ability of the dog to arm and be tensioned against the normal wear of a gun.

It may also be noted that the mechanism according to the invention does not use a conventional cocking rod located in a recess of the rocker below the hinge articulating the rocker barrel on the rocker, or "rooster of length" s' extending from a front iron (or "length") of the tilting gun. Thus, the mechanism according to the invention has multiple advantages:

- the manufacture of the barrel and front iron is simplified;

- The height of the rocker can be decreased and the mechanism can be more compact (no cocking rod below the hinge);

- The walls of the barrel can be thickened for more security (no special arrangement of the front iron for a "rooster of length" and the rocker for a cocking rod);

material can be added between the heart of the mechanism located in the rocker and the hinge for greater security;

- The barrel has a better seat in the rocker (the hinge can be lowered relative to the height of the rocker compared to a conventional mechanism);

- The surface of a recoil surface is greater compared to that of a conventional mechanism thus allowing a better support at the start of a shot (the recoil surface then having no recess necessary to passage of an arming rod).

In a complementary manner, by means of the drive means, the passage of the barrel from its closed position to its open position consecutively entails: the rocker in the tilted position back through its biasing means in the tilted back position;

the pull of the rigid rod;

the dog's rotation;

- placing the dog in an armed position.

Advantageously, the complementary member and the transmitter together form a cam system.

Such a cam system provides reliable and robust drive means. For example, the complementary member of the barrel may take the form of a surface adapted to cooperate with the transmitter to pull the latter in its towed position during the passage of the barrel from its open position to its closed position. This surface combined with the rocking movement of the tilting gun can thus form a kind of hook capable of coupling with the transmitter.

According to a preferred embodiment, the arming means comprise a trigger having an edge intended to cooperate with a dog notch when the armed position of the dog.

According to this embodiment and via the drive means, the dog's rotation causes the dog to be placed in the armed position by the cooperation of the trigger's ridge and the dog's notch.

Such an embodiment makes it possible to reduce the tension applying to elements such as the dog or the trigger during the dog positioning phase. Thus, these elements are less likely to wear out compared to the components of conventional mechanisms proposed by the prior art. Consequently, this embodiment of the invention makes it possible to improve the ability of the mechanism to effect the hooking of the dog's notch.

Preferably, the rigid rod is coupled to the rocker by means of a through hole of the rocker and a nut screwed onto a first end of the rigid rod protruding from the through hole, and the rigid rod is coupled to the dog by the intermediate cylindrical head located on a second end of the rigid rod opposite the first end, the cylindrical head housing in a cylindrical recess of the dog.

This rigid rod is thus particularly suitable for driving the dog in the armed position from the rocker back of the rocker, the dog thus being pulled by the rigid rod. In addition, the cylindrical head and the cylindrical recess provide a pivot connection particularly suitable for pulling the dog in the armed position and the movement that the dog is made to achieve when it is released to hit the strikers.

According to an advantageous solution, the first spring rests at a first end on the rocker and at a second end opposite the first end on the cylindrical head of the rigid rod.

Thus, the passage of the barrel from its open position to its closed position results consecutively:

- the rocker in tilted position forward;

- The compression of the spring of the rigid rod (the rigid rod passing through the rocker, the latter is consequently free in translation along this rod until the nut is brought into contact with the rocker);

- Tensioning the dog in the armed position through the compression of the spring.

According to a preferred embodiment, the tensioner has at one end an oblong hole intended to cooperate with a lug of the transmitter, and the tensioner has at a second end opposite the first end a wheel intended to cooperate with a surface of the rocker.

Such a tensioner makes it possible to advantageously adapt the transmission kinematics of the opening movement of the rocking barrel and the transmitter to the rocker.

Indeed, the transmitter preferably performs a rectilinear translation between its rest position and its trailed position and the rocker performs a rotation. Thus achieved, the tensioner can perform a translation rectilinear non-parallel to that of the transmitter to allow the correct application of the wheel on the surface of the rocker and, then, the good drive of the rocker from its position tilted back to its tilted position forward.

According to an advantageous solution, the return means in the tilted position behind the rocker is constituted by a second spring.

Other characteristics and advantages of the invention will emerge more clearly on reading the following description of a preferred embodiment of the invention, given by way of illustrative and nonlimiting example, and the appended drawings among which:

- Figure 1 is a schematic representation of the turret gun mechanism according to the invention with its barrel in an open position, the dog being in the armed position;

- Figure 2 is a schematic representation of the turret gun mechanism according to the invention with its barrel in a closed position, the dog being in the armed position and put in tension.

With reference to FIGS. 1 and 2, the shotgun rifle of the shotgun type has:

a rocker 1;

- A tilting gun 2 coupled to the rocker.

The tilting gun is rotatable about a pivot axis formed by a hinge between an open position (Figure 1) and a closed position (Figure 2).

According to the invention, the mechanism of the tilting gun includes:

- a dog 3;

means for cocking the dog;

- Elastic means for tensioning the dog in the armed position;

- Drive means for cooperating with the arming means and with the elastic means. The dog 3 is intended to hit a striker 80 to trigger a shot. To put the dog 3 in condition to trigger a shot, it must be armed and put in tension.

The arming of the dog 3 is carried out by means of the arming means which drive the dog from an unarmed position to an armed position, the armed position consisting of a position in which the dog is away from the striker 80 and held away. (figure 1 ).

The dog is tensioned by the elastic means that apply an elastic tension against the hammer dog, in the direction of the striker (Figure 2). This elastic tension is capable of driving the dog to hit the firing pin 80 when the dog is released from its armed position.

To carry out the arming and the tensioning of the dog, the arming means and the elastic means cooperate with the drive means.

Indeed, according to the principle of the invention, during the passage of the barrel from its closed position to its open position, the drive means cooperate with the arming means to bring the dog in the armed position and, during the passage of the barrel from its open position to its closed position, the drive means cooperate with the elastic means to put the armed dog in tension.

More specifically, the drive means comprise:

a transmitter 40;

a complementary member 41 presented by the barrel 2;

- a tensioner 42.

The transmitter 40 is movable between a rest position remote from the pivot axis of the barrel 2 and a position pulled towards this pivot axis.

The complementary member 41 and the transmitter 40 together form a cam system to cooperate together during the opening and closing of the barrel. As can be seen in FIG. 1, the transmitter 40 thus has at one end a first bevel 401 capable of cooperating with the complementary member 41 which takes the form of a second bevel. Thus, during the passage of the barrel from its open position to its closed position, the transmitter 40 is pulled in the trailing position by the complementary member.

As shown in Figure 1, the transmitter 40 has a lug 400 for cooperating with an oblong hole 420 of the tensioner 42. This oblong hole allows in particular to adapt the transmission of the transmitter movement to the tensioner. Indeed, the tensioner 42 is movably mounted on an upper wall 10 according to a slide connection. Thus, according to this feature, the oblong hole 420 allows the tensioner 42 to perform a rectilinear translation not parallel to that the transmitter 40 performs between its drawn position and its retreated rest position. This oblong hole 420 is located on a first end of the tensioner 42.

At a second end opposite the first end, the tensioner 42 has a wheel 421 intended to cooperate with the arming means to bring the dog in the armed position and drive the elastic means to tension the dog in the armed position.

The means of armament include:

a rocker 50;

a rigid rod 51;

- a trigger 52.

The rocker 50 is rotatable between a tilted rear position away from the dog 3 and a tilted position forward to the dog.

This rocker 50 is intended to be driven from its tilted position back to its tilted position forward under the action of the tensioner when the latter is driven by the passage of the transmitter from its rest position to its towed position. Indeed, the rocker 50 has a surface 501 adapted to cooperate with the wheel 421 of the tensioner.

The rocker has a return means in the tilted position back. Thus, during the passage of the barrel from its closed position to its open position, the complementary member 41 stops pulling in the pulled position the transmitter 40, the tensioner 42 no longer exerts pressure on the rocker 50 to keep it tilted forward position and the return means thus cause:

- The passage of the rocker from its tilted position forward to its tilted back position;

- the displacement of the tensioner 42;

- The passage of the transmitter from its towed position to its rest position.

According to the solution illustrated in Figure 1, the rocker 50 carries a second spring 7, surrounding a spring guide rod, which forms the biasing means in the tilted position back.

The rigid rod 51 is coupled to the rocker 50 and the dog 3.

This rigid rod 51 passes through the rocker via a through hole 500 of the rocker and has a nut 510 on the end of the rigid rod protruding from this through hole. Thus, during the passage of the rocker from its tilted position forward to its tilted back position, it is able to drive back with him, the rigid rod.

The rigid rod 51 has on a second end opposite the first end a cylindrical head 51 1 housed and coupled in a cylindrical recess 31 of the dog 3. As a result, when the rod is driven back, the dog 3 is also driven back.

To reach the armed position, the trigger 52 has an edge 520 intended to cooperate with a notch 30 of the dog 3. In cooperation with the trigger, a third spring 521 makes it possible to apply a constant elastic stress on the trigger so as to apply the 520 ridge on the dog 3. Thus, when the dog is sufficiently driven back by the rigid rod, the notch exceeds the edge of the trigger which is applied on the surface of the dog, in front of the notch. The dog then hung his notch and is in an armed position.

As illustrated by FIGS. 1 and 2, the resilient means able to put the dog 3 under tension comprises the rocker 50 and a first spring 6 which surrounds the rigid rod 51. This first spring 6 is based on a first end on the rocker 50 and at a second end opposite the first end on the cylindrical head 51 1 of the rigid rod.

When the dog is held in the armed position, the rigid rod 51 is also retained and can not drive the dog 3 towards the strikers. Then, when the rocker is driven from its tilted position back to its tilted position forward, the rigid rod 51 slides through the through hole 500 of the rocker and the rocker compresses the first spring 6 along the rigid rod, exerting and a pressure on the cylindrical head 51 1 and then putting in tension the hammer.

According to the principle of the invention and as explained above, during the passage of the barrel from its open position to its closed position, the transmitter 40 and the tensioner 42 drive the rocker 50 from its tilted position back to its tilted position. before, block the rocker in its tilted position forward and thus cause the dog to tension 3.

To trigger the firing, once the rifle has been closed, a user must actuate a trigger 81 whose movement causes the rotation of the trigger 52 and the release of the notch 30 of the dog 3 of the edge 520 of the trigger. The notch 30 released, the dog 3 is then propelled forward to hit the striker 80 under the action of the decompression of the spring 6, thereby triggering the shot.

According to an advantageous characteristic, the barrel is of the barrel type with a double barrel and the mechanism comprises a counterweight 9.

The mechanism then comprises in particular:

- two strikers 80;

- two dogs 3;

a first and a second trigger 52;

a rocker 50;

- Two rigid rods 51 each provided with their first spring 6, a first end rests on a cylindrical head 51 1 housed in cylindrical recesses 31 of each dog 3 and whose second end rests on the rocker 50. According to this characteristic, the trigger 81 is coupled to the weight 9, a jaw 90 of which traps one end of the first trigger 52.

When the trigger 81 is actuated, the feeder 9 causes the trigger 52 to move in movement and to imprison one end thereof, thus releasing the dog 3 and triggering a gunshot. Under the effect of the shot, the weight changes position and traps one end of the second trigger 52, allowing the user to pull a second time by actuating the trigger 81.

Claims

A shotgun mechanism of the shotgun type, the shotgun having a rocker (1) coupled to a barrel (2) swinging between an open position and a closed position, the mechanism comprising:

- a dog (3) for striking a striker (80);

- Elastic means adapted to tension the dog in the armed position, the elastic means comprising a rocker (50) and a first spring (6) for tensioning the dog;

driving means intended to cooperate with:

characterized in that the arming means comprises:

- The rocker (50) which is movable in rotation between a tilted rear position away from the dog (3) and a tilted position forward to the dog, the rocker having a biasing means in the tilted position backwards;

- A rigid rod (51) coupled to the rocker and the dog, the first spring (6) surrounding the rigid rod (51), the rigid rod (51) being coupled to the rocker (50) via a through hole (500) of the rocker and a nut (510) screwed onto a first end of the rigid rod protruding from the through hole;

and in that the drive means comprises: - A transmitter (40) movable between a rest position remote from a pivot axis of the barrel (2) relative to the rocker (1) and a position drawn to the pivot axis of the barrel;

- A complementary member (41) presented by the gun and complementary transmitter, the complementary member cooperating with the transmitter to bring it into its trailed position during the passage of the gun from its open position to its closed position.

- A tensioner (42) coupled to the transmitter (40), the tensioner being movably mounted on an upper wall (10) in a slide connection, the tensioner being capable of performing a rectilinear translation not parallel to that which the transmitter performs between its position. towed and its rest position, the tensioner being intended to drive the rocker (50) from its tilted position back to its tilted position forward during the passage of the transmitter from its rest position to its towed position.

A turret gun mechanism according to claim 1, characterized in that the complementary member (41) and the transmitter (40) together form a cam system.

Tilting gun mechanism according to any one of claims 1 and 2, characterized in that the arming means comprise a trigger (52) having an edge (520) intended to cooperate with a notch (30) of the dog ( 3) when placing the dog in an armed position.

Tilting gun mechanism according to any of the preceding claims, characterized in that the rigid rod (51) is coupled to the rocker (50) via a through hole (500) of the rocker and a nut (510) screwed onto a first end of the rigid rod protruding from the through hole, and in that the rigid rod is coupled to the dog (3) via a cylindrical head (51 1) located on a second end of the rigid rod (51) opposite the first end, the cylindrical head being housed in a cylindrical recess (31) of the dog.

A turret gun mechanism according to claim 4, characterized in that the first spring rests at a first end on the rocker and at a second end opposite the first end on the cylindrical head (51 1) of the rigid rod.

Tilting gun mechanism according to any one of the preceding claims, characterized in that the tensioner (42) has at one end an oblong hole (420) intended to cooperate with a lug (400) of the transmitter (40),

and in that the tensioner has at a second end opposite the first end a wheel (421) intended to cooperate with a surface (501) of the rocker (50).

Rifle gun mechanism according to any one of the preceding claims, characterized in that the return means in the tilted position behind the rocker (50) is constituted by a second spring (7).