EP3948145B1 - Valve sheath for ct40 cannon - Google Patents

Valve sheath for ct40 cannon Download PDF

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Publication number
EP3948145B1
EP3948145B1 EP20733523.3A EP20733523A EP3948145B1 EP 3948145 B1 EP3948145 B1 EP 3948145B1 EP 20733523 A EP20733523 A EP 20733523A EP 3948145 B1 EP3948145 B1 EP 3948145B1
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EP
European Patent Office
Prior art keywords
valve
firing pin
sleeve
valve sleeve
assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
EP20733523.3A
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German (de)
French (fr)
Other versions
EP3948145A2 (en
EP3948145C0 (en
Inventor
Anne GOURDET
Frédéric ROUHAUT
Colin Stephenson
Patrice Pichot
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CTA International SAS
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CTA International SAS
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Publication date
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Publication of EP3948145A2 publication Critical patent/EP3948145A2/en
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Publication of EP3948145C0 publication Critical patent/EP3948145C0/en
Publication of EP3948145B1 publication Critical patent/EP3948145B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A19/00—Firing or trigger mechanisms; Cocking mechanisms
    • F41A19/06—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms
    • F41A19/25—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having only slidably-mounted striker elements, i.e. percussion or firing pins
    • F41A19/27—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having only slidably-mounted striker elements, i.e. percussion or firing pins the percussion or firing pin being movable relative to the breech-block
    • F41A19/29—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having only slidably-mounted striker elements, i.e. percussion or firing pins the percussion or firing pin being movable relative to the breech-block propelled by a spring under tension
    • F41A19/36—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having only slidably-mounted striker elements, i.e. percussion or firing pins the percussion or firing pin being movable relative to the breech-block propelled by a spring under tension in block-action guns
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A19/00—Firing or trigger mechanisms; Cocking mechanisms
    • F41A19/06—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms
    • F41A19/13—Percussion or firing pins, i.e. fixed or slidably-mounted striker elements; Mountings therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A19/00—Firing or trigger mechanisms; Cocking mechanisms
    • F41A19/06—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms
    • F41A19/25—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having only slidably-mounted striker elements, i.e. percussion or firing pins
    • F41A19/27—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having only slidably-mounted striker elements, i.e. percussion or firing pins the percussion or firing pin being movable relative to the breech-block
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A19/00—Firing or trigger mechanisms; Cocking mechanisms
    • F41A19/06—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms
    • F41A19/42—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having at least one hammer
    • F41A19/43—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having at least one hammer in bolt-action guns
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A19/00—Firing or trigger mechanisms; Cocking mechanisms
    • F41A19/06—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms
    • F41A19/42—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having at least one hammer
    • F41A19/49—Mechanical firing mechanisms, e.g. counterrecoil firing, recoil actuated firing mechanisms having at least one hammer in block-action guns
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B5/00—Cartridge ammunition, e.g. separately-loaded propellant charges
    • F42B5/02—Cartridges, i.e. cases with charge and missile
    • F42B5/045—Cartridges, i.e. cases with charge and missile of telescopic type

Definitions

  • the technical sector of the present invention is that of firing pins for large and medium caliber firearms, in particular tank turret guns, and in particular for the CT40 gun.
  • EP 0 660 068 A1 describes a valve sleeve.
  • the CT40 cannon uses a particular type of ammunition: telescoped ammunition. These ammunition, the structure of which is known, have the particularity that the projectile is included in the casing and does not protrude from it at the front end. There are different types, and the CT40 cannon can employ various kinds, for example anti-tank, explosive or practice ammunition.
  • the CT40 cannon among its components, has a special part, the valve sleeve, which provides mechanical support for the striker when the telescoped ammunition is fired.
  • valve sleeve In this known version of the valve sleeve, the latter worked in cooperation with the detonation assembly.
  • the striker is secured there to the telescopic detonation assembly and the valve sleeve has a central longitudinal recess in which the striker slides.
  • the valve sleeve thus ensures the correct positioning of the firing pin and, by the sliding of its front part, the mechanical support necessary for successful detonation.
  • valve sleeve gives the CT40 barrel proven efficiency and reliability, but it also imposes a constraint. Indeed, if the gunner forgets to install the valve sleeve in the barrel, the barrel may experience a misfire.
  • the present invention provides a new valve sleeve preventing such firing failures.
  • the invention therefore relates to a valve sleeve for the CT40 cannon according to claim 1.
  • the barrel striker is coupled to said valve sleeve and is movable in translation relative thereto.
  • the receiving means consist of a striker sleeve body of substantially cylindrical shape, a striker valve and a striker assembly inserted into said cylindrical sleeve body and the striker inserted both in the valve and the striker assembly, these means being of revolution.
  • a ring is interposed between the valve and the striker assembly, said ring being connected to the valve by a cylindrical pin and being able to slide relative to the valve.
  • the sleeve comprises a spring inserted in a cage delimited by this sleeve and is placed in abutment against the ring, said spring being intended to return the valve to its initial rest position.
  • the spring is compressed by the ring during the translational movement of the striker assembly.
  • the striker assembly is held in position by means of a plug and an elastic ring.
  • the sheath of valve is made of a steel type material with high mechanical characteristics resistant to heat and pressure.
  • valve sleeve according to the invention lies in the fact that it is impossible to fire if said sleeve is not inserted in the barrel. It therefore provides infallible mechanical support for the firing pin during firing.
  • valve sleeve 1 in the form of a solid part 2 machined and enclosing from front to rear a striker valve 3, a spring guide 5 and a striker assembly 7 , these different elements being movable inside the sheath 1 as will be explained below.
  • This figure represents the rest or inactive position of the percussion assembly.
  • the striker valve 3 comprises a first shoulder 20 cooperating with a complementary shoulder of the sheath 1 held together in constant support by means of a spring 4 in the rest position in the figure.
  • This spring 4 partially surrounds the valve 3 and is housed in a cage 101 delimited by sheath 1.
  • the spring guide 5 is in the form of a ring bearing on one side on the free end of the spring 4 and on the other on the striker assembly 7.
  • the spring guide 5 is held in position by a cylindrical pin 6 with respect to the valve 3.
  • the firing pin assembly 7 is held in place inside the sheath 1 by a cap 8 and an elastic ring 9. This assembly 7 has a free end 21 projecting from the sheath 1.
  • the striker 10 is coupled to the sheath while being integrated therein.
  • This striker 10 is arranged in a housing formed both in the valve 3 and the striker assembly 7 while being held tight in this housing and in abutment in the striker assembly.
  • the striker 10 is slightly recessed with respect to the front end of the valve 3 and that the valve 3 is separated from the striker assembly 7 by the free space 23.
  • valve sleeve 1 is housed in the barrel in order to ensure the percussion of the ammunition and is actuated using a detonation assembly.
  • valve sleeve 1 is in relation with the detonation assembly 11 which is a conventional telescopic striker known in the prior art and which it is not necessary to describe in detail. These two elements are in the rest position. It may be noted that this assembly 11 comprises in particular a spring 14, a thruster body 15 provided with protuberances 16, 17 cooperating with grooves 18, 19 making it possible to lock the thruster body 15 in position.
  • valve sleeve 1 is inserted into the barrel of the weapon 12 and opens at the level of the free end of the firing pin 10 into the detonation chamber 13 represented in a simplified manner.
  • the ammunition is not shown.
  • the firing pin 10 is fully inserted into the body of the sleeve 2 and does not protrude forward in the direction of the ammunition to be detonated.
  • the spring 4 is relaxed keeping the valve 3 in intimate contact with the sheath 2 at the level of the shoulder 20.
  • the free end 21 of the firing pin assembly 7 protrudes from the body 2 and is arranged opposite the assembly of detonation 11.
  • FIG. 3 illustrates the first stage of a firing event, the first stage consisting of arming the firing device.
  • the valve sleeve 1 according to the invention remains in this figure in the rest state.
  • the detonation assembly 11 is brought into the cocked position by recoil.
  • the spring 14 is then compressed by the recoil of the thruster body 15.
  • the protuberances 16, 17 of the thruster body 15, in combination with the grooves 18, 19, make it possible to lock the thruster body 15 in the cocked position.
  • the striker assembly 7 is then translated into the body of the sleeve 2 and compresses the valve spring 4 until it comes into contact with said valve 3, which propels the valve of the striker 3 towards the forward, in a translation movement and erases the space 23 represented on the figure 1 .
  • the start and end positions of movement of the striker 10 are perfectly known and ensured. Therefore, the firing pin 10 can in no case deviate from its trajectory and avoid the primer of the ammunition, which would lead to defective firing or a dangerous detonation.
  • the firing pin 10 forming an integral part of the body of the valve sleeve 1, the weapon cannot be used without this element. The possibility that the gunner forgets to place the valve sleeve before firing is thus rendered impossible.
  • the firing pin 10 cannot deviate from the optimal rectilinear trajectory and no faulty firing event can occur.
  • valve 3 and the firing pin assembly 7 are returned to their initial position of the figure 2 by spring 4.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Portable Nailing Machines And Staplers (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
  • Toys (AREA)
  • Automatic Assembly (AREA)
  • Taps Or Cocks (AREA)

Description

Le secteur technique de la présente invention est celui des percuteurs pour armes à feu de gros et moyens calibres, notamment les canons de tourelles de char, et en particulier pour le canon CT40. EP 0 660 068 A1 décrit un fourreau de soupape.The technical sector of the present invention is that of firing pins for large and medium caliber firearms, in particular tank turret guns, and in particular for the CT40 gun. EP 0 660 068 A1 describes a valve sleeve.

Le canon CT40 utilise un type de munition particulier : les munitions télescopées. Ces munitions, dont la structure est connue, présentent pour particularité que le projectile est inclus dans la douille et n'en dépasse pas à l'extrémité antérieure. Il en existe de différents types, et le canon CT40 peut en employer diverses sortes, par exemple des munitions anti-char, explosives ou d'exercice.The CT40 cannon uses a particular type of ammunition: telescoped ammunition. These ammunition, the structure of which is known, have the particularity that the projectile is included in the casing and does not protrude from it at the front end. There are different types, and the CT40 cannon can employ various kinds, for example anti-tank, explosive or practice ammunition.

Ces munitions sont des munitions de technologie élaborée, dont l'utilisation requiert une arme de précision et de haute technologie, qui ne peut être manipulée que par un personnel qualifié et formé.These ammunition are advanced technology ammunition, the use of which requires a precision and high-tech weapon, which can only be handled by qualified and trained personnel.

Ainsi, le canon CT40, parmi les éléments qui le composent, présente une pièce particulière, le fourreau de soupape, qui assure le support mécanique du percuteur au moment du tir de la munition télescopée.Thus, the CT40 cannon, among its components, has a special part, the valve sleeve, which provides mechanical support for the striker when the telescoped ammunition is fired.

Dans cette version connue du fourreau de soupape, ce dernier fonctionnait en coopération avec l'assemblage de détonation. Le percuteur y est solidaire de l'assemblage de détonation télescopique et le fourreau de soupape présente un évidement longitudinal central dans lequel coulisse le percuteur. Le fourreau de soupape assure ainsi le positionnement correct du percuteur et, par le coulissement de sa partie antérieure, le support mécanique nécessaire à la détonation réussie.In this known version of the valve sleeve, the latter worked in cooperation with the detonation assembly. The striker is secured there to the telescopic detonation assembly and the valve sleeve has a central longitudinal recess in which the striker slides. The valve sleeve thus ensures the correct positioning of the firing pin and, by the sliding of its front part, the mechanical support necessary for successful detonation.

Ce fourreau de soupape confère au canon CT40 une efficacité et une fiabilité démontrées, mais il impose également une contrainte. En effet, si l'artilleur oublie d'installer le fourreau de soupape dans le tube, le canon peut connaître un échec de tir.This valve sleeve gives the CT40 barrel proven efficiency and reliability, but it also imposes a constraint. Indeed, if the gunner forgets to install the valve sleeve in the barrel, the barrel may experience a misfire.

Afin de remédier à ces risques, la présente invention prévoit un nouveau fourreau de soupape empêchant de tels échecs de tir.In order to remedy these risks, the present invention provides a new valve sleeve preventing such firing failures.

L'invention a donc pour objet un fourreau de soupape pour le canon CT40 suivant la revendication 1.The invention therefore relates to a valve sleeve for the CT40 cannon according to claim 1.

Le percuteur du canon est attelé au dit fourreau de soupape et est mobile en translation par rapport à celui-ci.The barrel striker is coupled to said valve sleeve and is movable in translation relative thereto.

Les moyens de réception sont constitués par un corps de fourreau percuteur de forme sensiblement cylindrique, une soupape de percuteur et un ensemble percuteur insérés dans le dit corps de fourreau cylindrique et le percuteur inséré à la fois dans la soupape et l'ensemble percuteur, ces moyens étant de révolution.The receiving means consist of a striker sleeve body of substantially cylindrical shape, a striker valve and a striker assembly inserted into said cylindrical sleeve body and the striker inserted both in the valve and the striker assembly, these means being of revolution.

Selon l'invention une bague est interposée entre la soupape et l'ensemble percuteur, ladite bague étant reliée à la soupape par une goupille cylindrique et étant apte à coulisser par rapport à la soupape.According to the invention, a ring is interposed between the valve and the striker assembly, said ring being connected to the valve by a cylindrical pin and being able to slide relative to the valve.

Selon encore une autre caractéristique du fourreau de soupape, le fourreau comprend un ressort inséré dans une cage délimitée par ce fourreau et est disposé en appui contre la bague, ledit ressort étant destiné à ramener la soupape dans sa position initiale de repos.According to yet another characteristic of the valve sleeve, the sleeve comprises a spring inserted in a cage delimited by this sleeve and is placed in abutment against the ring, said spring being intended to return the valve to its initial rest position.

Selon encore une caractéristique du fourreau de soupape selon l'invention, le ressort est comprimé par la bague lors du mouvement de translation de l'ensemble percuteur.According to yet another characteristic of the valve sleeve according to the invention, the spring is compressed by the ring during the translational movement of the striker assembly.

Selon encore une autre caractéristique du fourreau de soupape, l'ensemble percuteur est maintenu en position à l'aide d'un bouchon et d'un anneau élastique.According to yet another feature of the valve sleeve, the striker assembly is held in position by means of a plug and an elastic ring.

Selon encore une autre caractéristique du fourreau de soupape selon l'invention, le fourreau est fabriqué en un matériau de type acier à hautes caractéristiques mécaniques résistant à la chaleur et à la pression.According to yet another characteristic of the sheath of valve according to the invention, the sheath is made of a steel type material with high mechanical characteristics resistant to heat and pressure.

Un avantage du fourreau de soupape selon l'invention réside dans le fait qu'il est impossible de procéder à un tir si le dit fourreau n'est pas inséré dans le canon. Il assure donc un soutien mécanique infaillible du percuteur lors de la mise à feu.An advantage of the valve sleeve according to the invention lies in the fact that it is impossible to fire if said sleeve is not inserted in the barrel. It therefore provides infallible mechanical support for the firing pin during firing.

Il en résulte que les mises à feu défectueuses deviennent impossibles, ce qui évite des tirs en échec.As a result, faulty firings become impossible, which avoids failed shots.

D'autres caractéristiques, avantages et détails de l'invention seront mieux compris à la lecture du complément de description qui va suivre donné à titre d'illustration en relation avec des dessins sur lesquels :

  • [FIG 1] est une coupe longitudinale du fourreau de soupape selon l'invention,
  • [FIG 2] est une vue du fourreau de soupape intégré à la plaque de percussion, associé à l'assemblage de détonation, en coupe transversale, en position de repos,
  • [FIG 3] est une vue du fourreau de soupape, associé à l'assemblage de détonation, en coupe transversale, en position armée, et
  • [FIG 4] est une vue du fourreau de soupape, associé à l'assemblage de détonation, en coupe transversale, en position de détonation.
Other characteristics, advantages and details of the invention will be better understood on reading the additional description which follows given by way of illustration in relation to the drawings in which:
  • [ FIG 1 ] is a longitudinal section of the valve sleeve according to the invention,
  • [ FIG 2 ] is a view of the valve sleeve integrated with the striker plate, associated with the detonation assembly, in cross section, in the rest position,
  • [ FIG 3 ] is a cross-sectional view of the valve sleeve, associated with the detonation assembly, in the cocked position, and
  • [ FIG 4 ] is a cross-sectional view of the valve sleeve, associated with the detonation assembly, in the detonation position.

Sur la figure 1, on a représenté en coupe longitudinale le fourreau de soupape 1 se présentant sous la forme d'une pièce massive 2 usinée et renfermant de l'avant vers l'arrière une soupape 3 de percuteur, un guide 5 de ressort et un ensemble percuteur 7, ces différents éléments étant mobiles à l'intérieur du fourreau 1 comme cela sera expliqué ci-après. Cette figure représente la position de repos ou inactive de l'ensemble de percussion.On the figure 1 , there is shown in longitudinal section the valve sleeve 1 in the form of a solid part 2 machined and enclosing from front to rear a striker valve 3, a spring guide 5 and a striker assembly 7 , these different elements being movable inside the sheath 1 as will be explained below. This figure represents the rest or inactive position of the percussion assembly.

La soupape 3 de percuteur comporte un premier épaulement 20 coopérant avec un épaulement complémentaire du fourreau 1 maintenu ensemble en appui constant par l'intermédiaire d'un ressort 4 en position de repos sur la figure. Ce ressort 4 entoure partiellement la soupape 3 et est logé dans une cage 101 délimitée par le fourreau 1.The striker valve 3 comprises a first shoulder 20 cooperating with a complementary shoulder of the sheath 1 held together in constant support by means of a spring 4 in the rest position in the figure. This spring 4 partially surrounds the valve 3 and is housed in a cage 101 delimited by sheath 1.

Le guide 5 de ressort se présente sous la forme d'une bague venant en appui d'un côté sur l'extrémité libre du ressort 4 et de l'autre sur l'ensemble percuteur 7. Le guide de ressort 5 est maintenu en position par une goupille cylindrique 6 par rapport à la soupape 3.The spring guide 5 is in the form of a ring bearing on one side on the free end of the spring 4 and on the other on the striker assembly 7. The spring guide 5 is held in position by a cylindrical pin 6 with respect to the valve 3.

L'ensemble percuteur 7 est maintenu en place à l'intérieur du fourreau 1 par un bouchon 8 et un anneau élastique 9. Cet ensemble 7 présente une extrémité libre 21 en saillie par rapport au fourreau 1.The firing pin assembly 7 is held in place inside the sheath 1 by a cap 8 and an elastic ring 9. This assembly 7 has a free end 21 projecting from the sheath 1.

Le percuteur 10 est attelé au fourreau en étant intégré dans celui-ci. Ce percuteur 10 est disposé dans un logement pratiqué à la fois dans la soupape 3 et l'ensemble percuteur 7 en étant maintenu serré dans ce logement et en butée dans l'ensemble percuteur. Sur la figure, on voit que le percuteur 10 est légèrement en retrait par rapport à l'extrémité avant de la soupape 3 et que la soupape 3 est séparée de l'ensemble percuteur 7 par l'espace libre 23.The striker 10 is coupled to the sheath while being integrated therein. This striker 10 is arranged in a housing formed both in the valve 3 and the striker assembly 7 while being held tight in this housing and in abutment in the striker assembly. In the figure, it can be seen that the striker 10 is slightly recessed with respect to the front end of the valve 3 and that the valve 3 is separated from the striker assembly 7 by the free space 23.

Il va de soi que le fourreau de soupape 1 est logé dans le canon afin d'assurer la percussion des munitions et est actionné à l'aide d'un assemblage de détonation.It goes without saying that the valve sleeve 1 is housed in the barrel in order to ensure the percussion of the ammunition and is actuated using a detonation assembly.

Les figures 2, 3 et 4 illustrent en détail le fonctionnement du fourreau de soupape selon l'invention.THE figure 2 , 3 And 4 illustrate in detail the operation of the valve sleeve according to the invention.

Sur la figure 2, on voit que le fourreau de soupape 1 est en relation avec l'assemblage de détonation 11 qui est un percuteur télescopique classique connu dans l'art antérieur et qu'il n'est pas nécessaire de décrire en détail. Ces deux éléments sont en position de repos. On peut noter que cet assemblage 11 comprend notamment un ressort 14, un corps propulseur 15 muni de protubérances 16, 17 coopérant avec des rainures 18, 19 permettent de verrouiller le corps propulseur 15 en position.On the figure 2 , it can be seen that the valve sleeve 1 is in relation with the detonation assembly 11 which is a conventional telescopic striker known in the prior art and which it is not necessary to describe in detail. These two elements are in the rest position. It may be noted that this assembly 11 comprises in particular a spring 14, a thruster body 15 provided with protuberances 16, 17 cooperating with grooves 18, 19 making it possible to lock the thruster body 15 in position.

Le fourreau de soupape 1 est inséré dans le canon de l'arme 12 et débouche au niveau de l'extrémité libre du percuteur 10 dans la chambre de détonation 13 représentée de manière simplifiée. La munition n'est pas représentée.The valve sleeve 1 is inserted into the barrel of the weapon 12 and opens at the level of the free end of the firing pin 10 into the detonation chamber 13 represented in a simplified manner. The ammunition is not shown.

On voit que dans cette position, le percuteur 10 est entièrement inséré dans le corps du fourreau 2 et ne dépasse pas vers l'avant en direction de la munition à détonner. Le ressort 4 est détendu en maintenant la soupape 3 en contact intime avec le fourreau 2 au niveau de l'épaulement 20. L'extrémité libre 21 de l'ensemble percuteur 7 dépasse du corps 2 et est disposée en regard de l'assemblage de détonation 11.We see that in this position, the firing pin 10 is fully inserted into the body of the sleeve 2 and does not protrude forward in the direction of the ammunition to be detonated. The spring 4 is relaxed keeping the valve 3 in intimate contact with the sheath 2 at the level of the shoulder 20. The free end 21 of the firing pin assembly 7 protrudes from the body 2 and is arranged opposite the assembly of detonation 11.

La figure 3 illustre la première étape d'un événement de tir, première étape consistant à armer le dispositif de tir. Le fourreau de soupape 1 selon l'invention reste sur cette figure à l'état de repos.There picture 3 illustrates the first stage of a firing event, the first stage consisting of arming the firing device. The valve sleeve 1 according to the invention remains in this figure in the rest state.

L'assemblage de détonation 11 est amené en position armée par un recul. Le ressort 14 est alors comprimé par le recul du corps propulseur 15. Les protubérances 16, 17 du corps propulseur 15, en combinaison avec les rainures 18, 19, permettent de verrouiller le corps propulseur 15 en position armée.The detonation assembly 11 is brought into the cocked position by recoil. The spring 14 is then compressed by the recoil of the thruster body 15. The protuberances 16, 17 of the thruster body 15, in combination with the grooves 18, 19, make it possible to lock the thruster body 15 in the cocked position.

Sur la figure 4, on a représenté l'instant de percussion, avec la position la plus avancée de la soupape 3 sous l'impulsion de l'assemblage de détonation 11 suivant la flèche F.On the figure 4 , the moment of percussion has been represented, with the most advanced position of the valve 3 under the impetus of the detonation assembly 11 along the arrow F.

On voit que dans cette position, l'assemblage de détonation 11 est libéré de sa position verrouillée en arrière représentée sur la figure 3 et vient frapper l'ensemble percuteur 7 qui vient à son tour pousser en translation la soupape 3. A cette fin, le ressort 14 est libéré et projette le corps propulseur 15 pour entraîner l'ensemble percuteur 7.It is seen that in this position, the detonation assembly 11 is released from its rearward locked position shown in the picture 3 and strikes striker assembly 7 which in turn pushes valve 3 in translation. To this end, spring 14 is released and projects propellant body 15 to drive striker assembly 7.

Comme on le voit sur cette figure, l'ensemble percuteur 7 est alors translaté dans le corps du fourreau 2 et vient comprimer le ressort de soupape 4 jusqu'au contact avec ladite soupape 3, ce qui propulse la soupape du percuteur 3 vers l'avant, dans un mouvement de translation et efface l'espace 23 représenté sur la figure 1.As can be seen in this figure, the striker assembly 7 is then translated into the body of the sleeve 2 and compresses the valve spring 4 until it comes into contact with said valve 3, which propels the valve of the striker 3 towards the forward, in a translation movement and erases the space 23 represented on the figure 1 .

Ce mouvement de translation de l'ensemble percuteur 7 et de la soupape du percuteur 3 entraîne le percuteur 10 qui dépasse alors du corps du fourreau 2 dans l'espace de détonation 13 du canon 12. Le percuteur 10 vient alors percuter l'amorce de la munition (non représentée) et provoque ainsi sa détonation.This translational movement of the striker assembly 7 and of the striker valve 3 drives the striker 10 which then protrudes from the body of the sleeve 2 into the space of detonation 13 of the barrel 12. The firing pin 10 then strikes the primer of the ammunition (not shown) and thus causes its detonation.

On voit donc bien que le percuteur 10 bénéficie d'un soutien mécanique constant tout au long de son déplacement dans le corps du fourreau de soupape 1 selon l'invention.It is therefore clear that the striker 10 benefits from constant mechanical support throughout its movement in the body of the valve sleeve 1 according to the invention.

Ainsi, les positions de début et de fin de mouvement du percuteur 10 sont parfaitement connues et assurées. De ce fait, le percuteur 10 ne peut en aucun cas dévier de sa trajectoire et éviter l'amorce de la munition, ce qui entraînerait un tir défectueux ou une détonation dangereuse.Thus, the start and end positions of movement of the striker 10 are perfectly known and ensured. Therefore, the firing pin 10 can in no case deviate from its trajectory and avoid the primer of the ammunition, which would lead to defective firing or a dangerous detonation.

En outre, le percuteur 10 faisant partie intégrante du corps du fourreau de soupape 1, l'arme ne peut être utilisée sans cet élément. L'éventualité où le servant du canon oublie de placer le fourreau de soupape préalablement au tir est ainsi rendue impossible.In addition, the firing pin 10 forming an integral part of the body of the valve sleeve 1, the weapon cannot be used without this element. The possibility that the gunner forgets to place the valve sleeve before firing is thus rendered impossible.

Ainsi, le percuteur 10 ne peut dévier de la trajectoire rectiligne optimale et aucun événement de tir défectueux ne peut survenir.Thus, the firing pin 10 cannot deviate from the optimal rectilinear trajectory and no faulty firing event can occur.

Il va de soi qu'une fois le tir effectué, la soupape 3 et l'ensemble percuteur 7 sont ramenés dans leur position initiale de la figure 2 par le ressort 4.It goes without saying that once the shot has been fired, the valve 3 and the firing pin assembly 7 are returned to their initial position of the figure 2 by spring 4.

Claims (6)

  1. A valve sleeve (1) for a barrel of the CT40 type operating in association with a detonating assembly (11) to actuate a firing pin (10), said valve sleeve (1) including receiving means (2, 3, 7) to ensure the mechanical support for the firing pin (10) of the barrel during firing events, said receiving means (2, 3, 7) being of revolution and consisting of a firing pin sleeve body (2) of substantially cylindrical shape, a firing pin valve (3) and a firing pin assembly inserted into said cylindrical sleeve body (2) and the firing pin (10) inserted into both the valve (3) and the firing pin assembly (7), characterised in that a bushing (5) is interposed between the valve (3) and the firing pin assembly (7), said bushing (5) being connected to the valve (3) by a cylindrical pin (6) and being capable of sliding relative to the valve (3).
  2. The valve sleeve (1) according to claim 1, characterised in that it comprises a spring (4) inserted into a cage (101) delimited by this sleeve and bearing against the bushing (5), said spring (4) being intended to return the valve (3) to its initial rest position.
  3. The valve sleeve (1) according to claim 2, characterised in that the spring (4) is compressed by the bushing (5) during the translational movement of the firing pin assembly (7).
  4. The valve sleeve according to any one of the preceding claims, characterised in that the firing pin assembly (7) is held in position using a plug (8) and an elastic ring (9) .
  5. The valve sleeve according to any one of the preceding claims, characterised in that the valve sleeve (1) is made of a steel-type material with high mechanical characteristics which is resistant to heat and pressure.
  6. The valve sleeve (1) according to claim 1, characterised in that the firing pin (10) of the barrel is coupled to said valve sleeve (1) and is movable in translation relative thereto.
EP20733523.3A 2019-03-29 2020-04-30 Valve sheath for ct40 cannon Active EP3948145B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1903405A FR3094472B1 (en) 2019-03-29 2019-03-29 Valve sleeve for CT40 cannon
PCT/EP2020/000089 WO2020200511A2 (en) 2019-03-29 2020-04-30 Valve sheath for ct40 cannon

Publications (3)

Publication Number Publication Date
EP3948145A2 EP3948145A2 (en) 2022-02-09
EP3948145C0 EP3948145C0 (en) 2023-06-21
EP3948145B1 true EP3948145B1 (en) 2023-06-21

Family

ID=67262694

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20733523.3A Active EP3948145B1 (en) 2019-03-29 2020-04-30 Valve sheath for ct40 cannon

Country Status (5)

Country Link
US (1) US11614295B2 (en)
EP (1) EP3948145B1 (en)
KR (1) KR20220162602A (en)
FR (1) FR3094472B1 (en)
WO (1) WO2020200511A2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CZ2020193A3 (en) * 2020-04-03 2021-05-26 Česká Zbrojovka A.S. Assembly of hammer automatic system of the gun

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US381264A (en) * 1888-04-17 Wilhelm loeenz
US824130A (en) * 1905-07-12 1906-06-26 Bethlehem Steel Corp Firing mechanism of guns.
US2382225A (en) * 1942-12-08 1945-08-14 Amalgamated Ordnance & Ammunit Ordnance
US4581836A (en) * 1983-07-25 1986-04-15 Bangor Punta Corporation Firing pin and firing pin-bushing assembly
FR2678057B1 (en) 1991-06-18 1995-02-17 Giat Ind Sa PERCUSSION DEVICE FOR A FIREARMS.
FR2714161B1 (en) * 1993-12-21 1996-02-09 Giat Ind Sa Improved percussion device for a firearm.
DE102005012284A1 (en) * 2005-02-03 2006-08-10 Diehl Bgt Defence Gmbh & Co. Kg Mechanical initiation system for caseless ammunition
US7555977B2 (en) * 2005-09-23 2009-07-07 Bae Systems Land & Armaments L.P. Firing pin and valve assembly

Also Published As

Publication number Publication date
FR3094472B1 (en) 2023-05-26
EP3948145A2 (en) 2022-02-09
KR20220162602A (en) 2022-12-08
EP3948145C0 (en) 2023-06-21
FR3094472A1 (en) 2020-10-02
WO2020200511A3 (en) 2021-12-16
US20220011069A1 (en) 2022-01-13
US11614295B2 (en) 2023-03-28
WO2020200511A2 (en) 2020-10-08

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