EP0467819B1 - Breakdown air gun - Google Patents

Breakdown air gun Download PDF

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Publication number
EP0467819B1
EP0467819B1 EP91500077A EP91500077A EP0467819B1 EP 0467819 B1 EP0467819 B1 EP 0467819B1 EP 91500077 A EP91500077 A EP 91500077A EP 91500077 A EP91500077 A EP 91500077A EP 0467819 B1 EP0467819 B1 EP 0467819B1
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EP
European Patent Office
Prior art keywords
barrel
fork
compression chamber
designed
opening
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EP91500077A
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German (de)
French (fr)
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EP0467819A1 (en
Inventor
Francisco Casas Salva
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Industrias El Gamo SA
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Industrias El Gamo SA
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41B—WEAPONS FOR PROJECTING MISSILES WITHOUT USE OF EXPLOSIVE OR COMBUSTIBLE PROPELLANT CHARGE; WEAPONS NOT OTHERWISE PROVIDED FOR
    • F41B11/00—Compressed-gas guns, e.g. air guns; Steam guns

Definitions

  • the present invention relates to improvements made to air rifles of the tilting barrel type, serving as a lever for a mechanism intended to compress a spring located in the compression chamber, said barrel comprising, on its rear end, an enlarged casing which comprises essentially a transverse stud and a pawl intended respectively for its articulation and for its locking on a fork which ends in a cylindrical part made integral with the compression chamber mounted on the barrel of the stick, this cylindrical part comprising an axial communication conduit with said compression chamber, which aligns coaxially with the axis of the barrel, in the cocking position.
  • the object of the invention relates mainly to the particular embodiment of the fork-shaped part, articulated on the barrel, and its attachment to the end of the compression chamber, as well as to the realization of the rear part of the 'envelope of said barrel, essentially determining a significant saving in the cost of producing each piece, without reducing the functional and precision characteristics of the parts concerned by the improvements.
  • the requirements that said fork must have are, in addition to ensuring the hermetic connection of the end of the compression chamber, those of allowing a positioning of the barrel, in closed position, with coaxial alignment of the axis of the body. of said barrel with the axial duct for the outlet of the compressed air from the compression chamber.
  • the object of the invention is to solve the aforementioned drawbacks, by implementing an embodiment of the parts used providing a significant saving in the cost of production without losing the performance of the rifle.
  • it is the ease and economy of production which is sought by combining the functions of connection, articulation and centering on two molded sub-assemblies and using a barrel and a compression chamber of a classic type.
  • the invention proposes an embodiment of the fork-shaped part which terminates the compressed air chamber and which comprises the axial duct which aligns coaxially with the axis of the barrel, in the cocking position, innovative, making it possible to obtain said piece in the form of a one-piece body produced by means of an injection molding operation of an appropriate material, advantageously a plastic material of high strength and mechanical strength, capable of withstanding shocks and frictional forces. and shear, with a cylindrical rear part capable of being inserted with adjustment in the front inlet of the compression chamber, comprising hermetic means interposed between the corresponding profile and fixed by simple transverse rods, thus significantly simplifying the manufacturing process allowing savings on each assembly produced.
  • the enveloping part of the rear portion of the barrel enlarged and provided with holes for articulation, holes for fixing the spring loading lever, a cavity for mounting the locking element of two parts of the rifle, in the closed position, and of the raising support, intended to be connected to the fork in an articulated manner, is also obtained by means of a molding operation by injection of a material, in particular plastic such as that mentioned above, which produces both a complete envelope of said barrel, with an orifice at its front end for the exit of the projectiles with a rear portion of said barrel projecting from said envelope .
  • the rifle shown in the figures comprises a tilting barrel 1 serving as a lever for a mechanism of articulated levers 13 intended to compress the spring 2 associated with the piston 27 of the compression chamber 3, said barrel comprising at its rear end, an enlarged casing 4 which essentially comprises a transverse stud 5 and a pawl 6 intended respectively for its articulation and for its locking on a fork 7 which ends in a cylindrical part 8 made integral with the compression chamber mounted on the barrel of the stick: said fork and its cylindrical extension being constituted by a one-piece body which is produced by means of an injection molding operation of a suitable material, in particular plastic material of high strength and mechanical strength, said one-piece body being attached to the rear part of the compression chamber, by adjusted insertion of its cylindrical part, with a pre-assembly lable of coaxial hermetic means 9 in particular of the O-ring type, the two parts being firmly fixed by means of transverse studs 10 which pass through the cylindrical part of the fork extension and the wall of the compression chamber, ensuring the fixing
  • the casing 4 of the rear part of the barrel, enlarged, provided with orifices intended for its articulation 5 with the fork and for fixing 12 of the compression lever 13 of the spring of the compression chamber, of a housing 14 for the mounting of a locking element, in particular a pawl 6, of the rifle in the closed position and of a raising support 15, is also carried out by means of an injection molding operation which makes it possible to obtain the complete envelope of said barrel with an orifice on its front end for the exit of the projectile and a rear section 16 of said barrel, projecting from the rear part of said casing, designed to adapt to the existing configuration 17 in the bottom of the fork, intended for its adequate centering.
  • the connecting part of the casing 4 of the rear section of the barrel to the compression chamber 3 is formed of a one-piece body with an advantageously cylindrical part 8, massive, of adequate diametral dimension to allow its connection with said chamber by a fitting adjusted at the front end thereof, which is extended by a fork shape 7 which comprises two parallel branches 18, substantially symmetrical, of planar internal faces connected by an intermediate face 19, also planar and which is limited by a wall 17, located below an orifice opening from an axial duct 20 to the cylindrical section which communicates with the compression chamber, wall which has, on the side closest to said orifice, a rebate 17 of semi-shaped cylindrical, centered with respect to said orifice, to serve as a support for the rear section of the barrel 16 in excess and for coaxial centering of the axis 21 of the body of said barrel with the conduit t axial outlet 20 of the compressed air from the compression chamber, and on the opposite side of said wall, a sloping plane 22 which is located opposite the locking element in the closed position of the rifle, said wall being
  • the axial communication conduit 20, which passes through the cylindrical part of the monobloc body of fork configuration, opens onto a cylindrical cavity 24 located at the base of said fork, intended to contain a seal 25, also cylindrical, comprising a central passage in the extension of the axial intercommunication duct with the compression chamber, slightly projecting from the bottom plane of the fork.
  • the one-piece fork configuration has, on the outer surface of the parallel legs of the fork, longitudinal ribs of reinforcement 26 which extend over an area which surrounds the orifices through which the pin 5 serving for the articulation of the two parts of the rifle passes.

Description

La présente invention concerne des perfectionnements apportés aux carabines à air comprimé du type à canon basculant, servant de levier à un mécanisme destiné à comprimer un ressort situé dans la chambre de compression, ledit canon comprenant, sur son extrémité arrière, une enveloppe élargie qui comporte essentiellement un goujon transversal et un cliquet destinés respectivement à son articulation et à son verrouillage sur une fourche qui se termine par une partie cylindrique rendue solidaire de la chambre de compression montée sur le fût de la crosse, cette partie cylindrique comportant un conduit axial de communication avec ladite chambre de compression, qui s'aligne coaxialement avec l'axe du canon, en position d'armement.The present invention relates to improvements made to air rifles of the tilting barrel type, serving as a lever for a mechanism intended to compress a spring located in the compression chamber, said barrel comprising, on its rear end, an enlarged casing which comprises essentially a transverse stud and a pawl intended respectively for its articulation and for its locking on a fork which ends in a cylindrical part made integral with the compression chamber mounted on the barrel of the stick, this cylindrical part comprising an axial communication conduit with said compression chamber, which aligns coaxially with the axis of the barrel, in the cocking position.

L'objet de l'invention concerne principalement la réalisation particulière de la pièce en forme de fourche, articulée sur le canon, et sa fixation sur l'extrémité de la chambre de compression, ainsi qu'à la réalisation de la partie arrière de l'enveloppe dudit canon, déterminant essentiellement une économie importante du coût de réalisation de chaque pièce, sans diminuer les caractéristiques fonctionnelles et de précision des parties concernées par les perfectionnements.The object of the invention relates mainly to the particular embodiment of the fork-shaped part, articulated on the barrel, and its attachment to the end of the compression chamber, as well as to the realization of the rear part of the 'envelope of said barrel, essentially determining a significant saving in the cost of producing each piece, without reducing the functional and precision characteristics of the parts concerned by the improvements.

Parmi les réalisations connues du genre en question destinées à réunir la pièce en forme de fourche assurant la liaison articulée entre l'enveloppe du canon et le corps de la chambre de compression, il existe:

  • a) la formation d'un ensemble monobloc, en métal forgé, comprenant la fourche, la partie cylindrique pourvue du conduit de passage de l'air comprimé et la chambre de compression, d'une carabine, tel que décrit au brevet DE-A-1 913 229. Le but recherché est l'obtention d'un conduit de longueur minimale pour accroître les performances de la carabine (moins de perte de pression). La technique utilisé présente les inconvénients suivants:
    • investissements de fabrication couteux;
    • nécessité de travaux de finition spéciaux;
    • nécessité d'utiliser des pistons spéciaux de par la forme de la chambre de compression obtenue à la forge;
    • des écarts dans les fabrications nécessitent des ajustages dimensionnels quasi-systématiques.
  • b) la liaison par filetage nécessitant le filetage d'une pièce cylindrique, en prolongement de ladite fourche, qui se fixe sur l'entrée de l'extrémité avant de la chambre de compression, dotée, sur sa paroi intérieure, d'un deuxième filetage; cette solution présente l'inconvénient de nécessiter une fonction de grande précision liée au fait que l'assemblage entre les deux pièces doit être hermétique, car une quelconque diminution de pression dans la chambre provoque une réduction importante des performances de la carabine; le brevet US 2,872,846 décrit une chambre de compression fermée par un bouchon fileté et avec l'interposition d'un joint annulaire d'herméticité, avec les mêmes imperfections mentionnés;
  • c) le soudage de la partie cylindrique, en prolongement de la fourche, qui reste introduite dans l'orifice d'entrée de l'extrémité avant de la chambre de compression, utilisant à cet effet principalement des méthodes de soudure par diffusion capillaire d'argent avec formation d'un cordon circulaire dans une atmosphère contrôlée; cette troisième méthode, bien que procurant une liaison efficace des deux pièces, exige des opérations ultérieures de finition (mécanique, rectification et polissage), qui augmentent le coût du procédé de fabrication.
Among the known embodiments of the genre in question intended to bring together the fork-shaped part ensuring the articulated connection between the casing of the barrel and the body of the compression chamber, there are:
  • a) the formation of a one-piece assembly, made of forged metal, comprising the fork, the cylindrical part provided with the conduit for the passage of compressed air and the compression chamber, of a rifle, as described in patent DE-A -1 913 229. The aim sought is to obtain a conduit of minimum length to increase the performance of the rifle (less loss of pressure). The technique used has the following drawbacks:
    • expensive manufacturing investments;
    • need for special finishing work;
    • need to use special pistons due to the shape of the compression chamber obtained in the forge;
    • deviations in manufacturing require almost systematic dimensional adjustments.
  • b) the connection by thread requiring the threading of a cylindrical part, in extension of said fork, which is fixed on the inlet of the front end of the compression chamber, provided, on its inner wall, with a second thread; this solution has the drawback of requiring a highly precise function linked to the fact that the assembly between the two parts must be hermetic, since any reduction in pressure in the chamber causes a significant reduction in the performance of the rifle; US Patent 2,872,846 describes a compression chamber closed by a threaded plug and with the interposition of an annular seal of hermeticity, with the same imperfections mentioned;
  • c) the welding of the cylindrical part, in extension of the fork, which remains introduced into the inlet orifice of the front end of the compression chamber, using for this purpose mainly welding methods by capillary diffusion of silver with formation of a circular bead in a controlled atmosphere; this third method, although providing an effective connection of the two parts, requires subsequent finishing operations (mechanical, grinding and polishing), which increase the cost of the manufacturing process.

Les exigences que doit avoir ladite pièce en fourche sont, en plus d'assurer la liaison hermétique de l'extrémité de la chambre de compression, celles de permettre un positionnement du canon, en position fermée, avec alignement coaxial de l'axe du corps dudit canon avec le conduit axial de sortie de l'air comprimé de la chambre de compression.The requirements that said fork must have are, in addition to ensuring the hermetic connection of the end of the compression chamber, those of allowing a positioning of the barrel, in closed position, with coaxial alignment of the axis of the body. of said barrel with the axial duct for the outlet of the compressed air from the compression chamber.

Pour ce faire, l'alignement en question met en oeuvre principalement des moyens utilisant des pièces métalliques des types:

  • a) dispositifs travaillant en butée de positionnements, en position d'armement, mettant en oeuvre un élément de verrouillage, obtenus par une finition de précision des surfaces en contact, de telle manière que le fond de la fourche avec la face arrière de l'enveloppe du canon sur laquelle ladite pièce s'articule, sont substantiellement planes;
  • b) dispositifs utilisant des butées définies entre un échelon de l'enveloppe de l'extrémité arrière du canon et un deuxième échelon formé par une section prismatique qui constitue une portion de la pièce butée pour l'élément de verrouillage, fixée à la base de la fourche; les faces en contact des deux profils en échelon exigent une finition de précision; en outre, la position relative desdits deux échelons exige des calculs très précis pour garantir, en position d'appui, l'alignement coaxial du conduit axial de sortie de l'air sous pression avec l'axe du canon, exigeant également des travaux ultérieurs de contrôle et de vérification de chaque pièce entrant dans le procédé de fabrication;
  • c) butées de positionnement constituées par une rainure pratiquée sur la partie inférieure du canon qui correspond avec au moins une tige transversale de la fourche, telle que décrit dans le brevet GB 941 711;
  • d) butées de positionnement constituées par une configuration fraction-cylindrique qui se prolonge dans la partie arrière de l'enveloppe du canon et qui vient en appui sur une partie cylindrique située à l'extrémité avant de la chambre de compression.
To do this, the alignment in question mainly implements means using metal parts of the types:
  • a) devices working at the positioning stop, in the cocking position, using a locking element, obtained by precision finishing the surfaces in contact, such that the bottom of the fork with the rear face of the casing of the barrel on which said part is articulated, are substantially flat;
  • b) devices using stops defined between a rung of the casing of the rear end of the barrel and a second rung formed by a prismatic section which constitutes a portion of the piece abutted for the locking element, fixed to the base of the fork; the contacting faces of the two rung profiles require precision finishing; in addition, the relative position of said two rungs requires very precise calculations to guarantee, in the support position, the coaxial alignment of the axial duct for the outlet of pressurized air with the axis of the barrel, also requiring subsequent work. control and verification of each part entering the manufacturing process;
  • c) positioning stops constituted by a groove formed on the lower part of the barrel which corresponds with at least one transverse rod of the fork, as described in patent GB 941,711;
  • d) positioning stops constituted by a fraction-cylindrical configuration which extends into the rear part of the casing of the barrel and which comes to bear on a cylindrical part situated at the front end of the compression chamber.

Toutes ces solutions, bien que valables, exigent en général pour leur réalisation des opérations délicates de montage et des travaux de finition et de vérification ultérieures de haute précision pour garantir un parfait alignement entre le canon et le conduit axial de sortie de l'air comprimé, travaux indispensables pour un rendement approprié de la carabine et rendant possible également l'efficacité de moyens de liaisons établis par un profil en correspondance entre la fourche et l'extrémité arrière du canon, rendant hermétique la zone de jonction, coopérant également à un rendement optimum de l'air sous pression.All of these solutions, although valid, generally require delicate assembly operations and subsequent high-precision finishing and verification work to ensure perfect alignment between the barrel and the axial compressed air outlet duct. , essential work for an adequate output of the rifle and also making possible the effectiveness of means of connections established by a profile in correspondence between the fork and the rear end of the barrel, making the junction zone hermetic, also cooperating in optimum performance of the pressurized air.

L'objet de l'invention consiste à résoudre les inconvénients sus-mentionnés, en mettant en oeuvre une réalisation des pièces employées procurant une économie importante du coût de production sans perdre les performances de la carabine. Conformément à l'invention c'est la facilité et l'économie de réalisation qui est recherchée en regroupant les fonctions de liaison, d'articulation et de centrage sur deux sous-ensembles moulés et en utilisant un canon et une chambre de compression d'un type classique.The object of the invention is to solve the aforementioned drawbacks, by implementing an embodiment of the parts used providing a significant saving in the cost of production without losing the performance of the rifle. In accordance with the invention, it is the ease and economy of production which is sought by combining the functions of connection, articulation and centering on two molded sub-assemblies and using a barrel and a compression chamber of a classic type.

A cet effet l'invention propose une réalisation de la pièce en forme de fourche qui termine la chambre d'air comprimé et qui comporte le conduit axial qui s'aligne coaxialement avec l'axe du canon, en position d'armement, innovante, permettant d'obtenir ladite pièce en forme de corps monobloc réalisé au moyen d'une opération de moulage par injection d'un matériau approprié, avantageusement une matière plastique de résistance et de tenue mécanique élevées, capable de supporter des chocs et des efforts de frottement et de cisaillement, avec une partie arrière cylindrique susceptible de s'insérer avec ajustage dans l'entrée avant de la chambre de compression, comportant des moyens hermétiques intercalés entre le profil correspondant et se fixant par de simples tiges transversales, simplifiant ainsi de manière notable le procédé de fabrication permettant une économie sur chaque ensemble fabriqué.To this end, the invention proposes an embodiment of the fork-shaped part which terminates the compressed air chamber and which comprises the axial duct which aligns coaxially with the axis of the barrel, in the cocking position, innovative, making it possible to obtain said piece in the form of a one-piece body produced by means of an injection molding operation of an appropriate material, advantageously a plastic material of high strength and mechanical strength, capable of withstanding shocks and frictional forces. and shear, with a cylindrical rear part capable of being inserted with adjustment in the front inlet of the compression chamber, comprising hermetic means interposed between the corresponding profile and fixed by simple transverse rods, thus significantly simplifying the manufacturing process allowing savings on each assembly produced.

En outre, la partie enveloppante de la portion arrière du canon, élargie et dotée d'orifices pour l'articulation, d'orifices de fixation du levier de chargement du ressort, d'une cavité pour le montage de l'élément de verrouillage de deux parties de la carabine, en position fermée, et du support de hausse, destinée à être reliée à la fourche de manière articulée, est obtenue également au moyen d'une opération de moulage par injection d'un matériau, notamment en matière plastique comme celle sus-mentionnée, qui réalise à la fois une enveloppe complète dudit canon, avec un orifice à son extrémité avant pour la sortie des projectiles avec une portion arrière dudit canon en saillie de ladite enveloppe.In addition, the enveloping part of the rear portion of the barrel, enlarged and provided with holes for articulation, holes for fixing the spring loading lever, a cavity for mounting the locking element of two parts of the rifle, in the closed position, and of the raising support, intended to be connected to the fork in an articulated manner, is also obtained by means of a molding operation by injection of a material, in particular plastic such as that mentioned above, which produces both a complete envelope of said barrel, with an orifice at its front end for the exit of the projectiles with a rear portion of said barrel projecting from said envelope .

Concernant les moyens de positionnement relatifs entre l'extrémité arrière de l'enveloppe du canon et la fourche, en position fermée, ils sont résolus, selon l'invention, au moyen d'une configuration en butée définie par un profil demi-cylindrique sur la base de la fourche, coaxial avec l'axe du conduit axial d'intercommunication au travers de la portion cylindrique qui prolonge ladite fourche, avec la chambre de compression, contre lequel vient s'appuyer, en position fermée, l'extrémité en saillie du canon appartenant à la partie arrière de son enveloppe. Il implique, en tenant compte de la réalisation par moulage par injection de ladite fourche et du corps de l'enveloppe du canon, que les dimensions, aussi bien de la fourche comme de l'enveloppe, en correspondance articulée et les distances entre le profil demi-cylindrique et l'axe d'articulation, demeurent garanties en permanence et avec cela l'alignement coaxial en situation "carabine fermée", sans aucune exigence ultérieure autre que celles prévues lors de la réalisation du moule.Concerning the relative positioning means between the rear end of the barrel casing and the fork, in the closed position, they are resolved, according to the invention, by means of a stop configuration defined by a semi-cylindrical profile on the base of the fork, coaxial with the axis of the axial intercommunication conduit through the cylindrical portion which extends said fork, with the compression chamber, against which comes to bear, in the closed position, the projecting end of the barrel belonging to the rear part of its envelope. It implies, taking into account the production by injection molding of said fork and of the body of the barrel casing, that the dimensions, both of the fork and of the casing, in articulated correspondence and the distances between the profile semi-cylindrical and the axis of articulation, remain permanently guaranteed and with that the coaxial alignment in situation "closed rifle", without any subsequent requirement other than those provided during the production of the mold.

D'autres caractéristiques et avantages de l'invention vont apparaître plus clairement à la lecture de la description détaillée qui suit d'un mode de réalisation préféré de l'invention donné à titre d'exemple seulement et représenté aux dessins annexés.
Sur ces dessins:

  • la figure 1 est une vue en coupe des parties concernées par l'invention, en position carabine ouverte;
  • la figure 2 est la même vue, en position carabine fermée;
  • la figure 3 est une vue en perspective des parties concernée par l'invention;
  • les figures 4 et 5 sont des vues de détail du plan de fond de la fourche et de la pièce monobloc correspondante.
Other characteristics and advantages of the invention will appear more clearly on reading the following detailed description of a preferred embodiment of the invention given by way of example only and shown in the accompanying drawings.
In these drawings:
  • Figure 1 is a sectional view of the parts concerned by the invention, in the open rifle position;
  • Figure 2 is the same view, in the closed rifle position;
  • Figure 3 is a perspective view of the parts concerned by the invention;
  • Figures 4 and 5 are detailed views of the plan bottom of the fork and the corresponding monobloc piece.

La carabine représentée aux figures comporte un canon basculant 1 servant de levier à un mécanisme de leviers articulés 13 destinés à compresser le ressort 2 associé au piston 27 de la chambre de compression 3, ledit canon comportant à son extrémité arrière, une enveloppe élargie 4 qui comporte essentiellement un goujon transversal 5 et un cliquet 6 destinés respectivement à son articulation et à son verrouillage sur une fourche 7 qui se termine par une partie cylindrique 8 rendue solidaire de la chambre de compression montée sur le fût de la crosse: ladite fourche et sa prolongation cylindrique étant constituées par un corps monobloc qui est réalisé au moyen d'une opération de moulage par injection d'un matériau approprié, notamment de la matière plastique de résistance et de tenue mécanique élevées, ledit corps monobloc se rattachant à la partie arrière de la chambre de compression, par insertion ajustée de sa partie cylindrique, avec un montage préalable de moyens hermétiques coaxiaux 9 notamment du type joint torique, les deux pièces étant fermement fixées au moyen de goujons transversaux 10 qui traversent la partie cylindrique de la prolongation de la fourche et la paroi de la chambre de compression, assurant la fixation de la partie 8 de la fourche et la fin de la course du piston 27 à ressort 2.The rifle shown in the figures comprises a tilting barrel 1 serving as a lever for a mechanism of articulated levers 13 intended to compress the spring 2 associated with the piston 27 of the compression chamber 3, said barrel comprising at its rear end, an enlarged casing 4 which essentially comprises a transverse stud 5 and a pawl 6 intended respectively for its articulation and for its locking on a fork 7 which ends in a cylindrical part 8 made integral with the compression chamber mounted on the barrel of the stick: said fork and its cylindrical extension being constituted by a one-piece body which is produced by means of an injection molding operation of a suitable material, in particular plastic material of high strength and mechanical strength, said one-piece body being attached to the rear part of the compression chamber, by adjusted insertion of its cylindrical part, with a pre-assembly lable of coaxial hermetic means 9 in particular of the O-ring type, the two parts being firmly fixed by means of transverse studs 10 which pass through the cylindrical part of the fork extension and the wall of the compression chamber, ensuring the fixing of the part 8 of the fork and the end of the stroke of the spring-loaded piston 27 2.

L'enveloppe 4 de la partie arrière du canon, élargie, dotée d'orifices destinés à son articulation 5 avec la fourche et à la fixation 12 du levier de compression 13 du ressort de la chambre de compression, d'un logement 14 pour le montage d'un élément de verrouillage, notamment un cliquet 6, de la carabine en position fermée et d'un support de hausse 15, est réalisée également au moyen d'une opération de moulage par injection qui permet d'obtenir l'enveloppe complète dudit canon avec un orifice sur son extrémité avant pour la sortie du projectile et une section arrière 16 dudit canon, dépassant la partie arrière de ladite enveloppe, prévue pour s'adapter sur la configuration existante 17 dans le fond de la fourche, destinée à son centrage adéquat.The casing 4 of the rear part of the barrel, enlarged, provided with orifices intended for its articulation 5 with the fork and for fixing 12 of the compression lever 13 of the spring of the compression chamber, of a housing 14 for the mounting of a locking element, in particular a pawl 6, of the rifle in the closed position and of a raising support 15, is also carried out by means of an injection molding operation which makes it possible to obtain the complete envelope of said barrel with an orifice on its front end for the exit of the projectile and a rear section 16 of said barrel, projecting from the rear part of said casing, designed to adapt to the existing configuration 17 in the bottom of the fork, intended for its adequate centering.

La pièce de liaison de l'enveloppe 4 de la section arrière du canon à la chambre de compression 3 est formée d'un corps monobloc avec une partie avantageusement cylindrique 8, massive, de dimension diamétrale adéquate pour permettre sa liaison avec ladite chambre par une insertion ajustée à l'extrémité avant de celle-ci, qui se prolonge par une forme en fourche 7 qui comporte deux branches parallèles 18, substantiellement symétriques, de faces intérieures planes relieés par une face intermédiaire 19, également plane et qui est limiteé par une paroi 17, située en-dessous d'un orifice débouchant d'un conduit axial 20 à la section cylindrique qui communique avec la chambre de compression, paroi qui possède, sur le côté le plus proche dudit orifice, une feuillure 17 de forme semi-cylindrique, centrée par rapport audit orifice, pour servir d'appui à la section arrière du canon 16 en dépassement et de centrage coaxial de l'axe 21 du corps dudit canon avec le conduit axial de sortie 20 de l'air comprimé de la chambre de compression, et sur le côté opposé de ladite paroi, un plan en pente 22, qui se situe en face de l'élément de verrouillage dans la position fermée de la carabine, ladite paroi étant prolongée par deux profils latéraux rectilignes 23 qui assurent la liaison en échelon avec la face intermédiaire plane 19 et les fonctions de centrage du canon et de renfort.The connecting part of the casing 4 of the rear section of the barrel to the compression chamber 3 is formed of a one-piece body with an advantageously cylindrical part 8, massive, of adequate diametral dimension to allow its connection with said chamber by a fitting adjusted at the front end thereof, which is extended by a fork shape 7 which comprises two parallel branches 18, substantially symmetrical, of planar internal faces connected by an intermediate face 19, also planar and which is limited by a wall 17, located below an orifice opening from an axial duct 20 to the cylindrical section which communicates with the compression chamber, wall which has, on the side closest to said orifice, a rebate 17 of semi-shaped cylindrical, centered with respect to said orifice, to serve as a support for the rear section of the barrel 16 in excess and for coaxial centering of the axis 21 of the body of said barrel with the conduit t axial outlet 20 of the compressed air from the compression chamber, and on the opposite side of said wall, a sloping plane 22 which is located opposite the locking element in the closed position of the rifle, said wall being extended by two rectilinear lateral profiles 23 which provide the step connection with the flat intermediate face 19 and the functions of centering the barrel and of reinforcement.

Le conduit axial de communication 20, qui traverse la partie cylindrique du corps monobloc de configuration en fourche, débouche sur une cavité cylindrique 24 située à la base de ladite fourche, destinée à contenir un joint 25, également cylindrique, comportant un passage central dans le prolongement du conduit axial d'intercommunication avec la chambre de compression, légèrement en saillie par rapport au plan de fond de la fourche.The axial communication conduit 20, which passes through the cylindrical part of the monobloc body of fork configuration, opens onto a cylindrical cavity 24 located at the base of said fork, intended to contain a seal 25, also cylindrical, comprising a central passage in the extension of the axial intercommunication duct with the compression chamber, slightly projecting from the bottom plane of the fork.

La pièce monobloc de configuration en fourche comporte, sur la surface extérieure des branches parallèles de la fourche, des nervures longitudinales de renfort 26 qui s'étendent sur une zone qui entoure les orifices au travers desquels passe le goujon 5 servant à l'articulation des deux parties de la carabine.The one-piece fork configuration has, on the outer surface of the parallel legs of the fork, longitudinal ribs of reinforcement 26 which extend over an area which surrounds the orifices through which the pin 5 serving for the articulation of the two parts of the rifle passes.

L'ensemble représenté comporte en outre:

  • le ressort 28 du cliquet 6 et une goupille 29 délimitant sa course;
  • un joint hermétique 30 en bout de piston 27;
  • le corps 11 de la tige du piston.
The set shown also includes:
  • the spring 28 of the pawl 6 and a pin 29 defining its travel;
  • a hermetic seal 30 at the end of the piston 27;
  • the body 11 of the piston rod.

Claims (3)

  1. Air rifle of tiltable barrel (1), of a customary type, serving as a lever to a hinged levers mechanism (13), designed to compress the spring (2) of the compression chamber (3), likewise of a customary type, mounted on the buttstock, said barrel comprising at its rear end a first sub-assembly (4) which essentially and respectively comprises a passing hole designed to receive a cross pin (5) and a recess (14) housing a catch (6), respectively designed for its articulation and locking on a second sub-assembly (7. 8) constituted by a fork (7) ending in a cylindrical portion (8) made integral with said compression chamber, and with an axial duct (20) extending therethrough having a cylindrical section which communicates with the compression chamber (3), characterised in that said two sub-assemblies (4) and (7, 8) which allow to assure the connection, articulation and centring between, on one side the barrel (1), and on the other side, the compression chamber (3) , of customary type of an air riffle of the hinged barrel type, are obtained each of them by means of a single injection moulding operation namely by injection of a suitable material, namely plastic material of high resistance and mechanical performance, and in that they comprise:
    a) regarding to the first one (4) which is designed to be made integral to the rear part of the barrel (1), forming at the same time a complete casing of the barrel:
    - the opening passage designed for its articulation to the cross pin (5),
    - the recess (14), designed to house the locking catch (6),
    - the opening (12) for connection of a lever of said hinged compression lever mechanism (13),
    - a rear part of said casing leaves a rear part (16) of said barrel protruding thereof;
    b) concerning to the second one (78) designed to be made integral to the front part of the compression chamber (3), adjustable inserted:
    - an opening, at both limbs (7) of the fork designed to the mounting of the articulation cross pin (5);
    - a groove, on the cylindrical portion (8) designed to lodge circular means (9), particularly of O-ring seal type, providing an airtight connection seal;
    - some open passages, through said cylindrical portion (8), and said compression chamber, housing cross locking pins (10) for securing said portion (8) and the end of the stroke of the piston (27) with a spring (2);
    - at the fork bottom (7) between their two parallel fork limbs (18), a flat intermediate face (19), limited by a wall (17) located below an opening where ends said axial duct (20), said wall bearing on the side nearer to said opening a rabbet (17) of half cylindrical shape, centered with respect to said opening, to serve as a support for the barrel (16) rear protruding section, and for axially centring the axis (21) of the barrel body in line with said axial duct (20), and on the opposite side of said opening of the axial duct an inclined plane (22) is situated in front of the locking element (6) in the riffle firing position, said wall (17) being laterally extended by two side profiles (23) that secure the stepped connection with the flat intermediate face (19) and provide the barrel centring and reinforcement functions.
  2. Rifle, according to claim 1, characterised in that the second sub-assembly comprises, on the external surface of the parallel fork limbs, reinforcement ribs (26) extending lengthwise on an area that surrounds the opening passages through which the pivot pin (5) passes serving as articulation of the two parts of the riffle.
  3. Rifle, according to claim 1, characterised in that the axial transfer duct (20), extending through the cylindrical portion of the second sub-assembly emerges at a cylindrical recess (24) located at the bottom of said fork aimed to house a joint (25), also cylindrical, and having a central passage in line of the axial duct (20) communicating with the compression chamber, slightly protruding with respect to the fork bottom.
EP91500077A 1990-07-20 1991-07-19 Breakdown air gun Expired - Lifetime EP0467819B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9009538A FR2664969B1 (en) 1990-07-20 1990-07-20 IMPROVEMENTS IN PROCESSES FOR MANUFACTURING RIFLES WITH COMPRESSED AIR, ROTATING GUN, AND RIFLE OBTAINED BY THEIR IMPLEMENTATION.
FR9009538 1990-07-20

Publications (2)

Publication Number Publication Date
EP0467819A1 EP0467819A1 (en) 1992-01-22
EP0467819B1 true EP0467819B1 (en) 1995-02-22

Family

ID=9399107

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91500077A Expired - Lifetime EP0467819B1 (en) 1990-07-20 1991-07-19 Breakdown air gun

Country Status (5)

Country Link
US (1) US5205271A (en)
EP (1) EP0467819B1 (en)
DE (1) DE69107542T2 (en)
ES (2) ES2025491A6 (en)
FR (1) FR2664969B1 (en)

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FR2729465B1 (en) * 1995-01-18 1997-03-21 Ind El Gamo IMPROVEMENTS ON AIR RIFLES AND PISTOLS
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ES2194564B2 (en) * 2000-10-13 2005-07-16 Industrias El Gamo, S.A. ARTICULATION DEVICE OF A GUN IN A CARBON OR COMPRESSED AIR GUN OF RUNNING GUN.
FR2815403B1 (en) 2001-10-12 2006-07-28 Ind El Gamo DEVICE FOR JOINING A GUN TO A ROCKER OR A COMPRESSED AIR GUN WITH TILTING GUN
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JP2020106260A (en) * 2018-12-28 2020-07-09 有限会社マルゼン Toy gun, barrel for toy gun, and barrel catch
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Also Published As

Publication number Publication date
ES2069255T3 (en) 1995-05-01
ES2025491A6 (en) 1992-03-16
US5205271A (en) 1993-04-27
FR2664969B1 (en) 1994-05-06
DE69107542D1 (en) 1995-03-30
FR2664969A1 (en) 1992-01-24
EP0467819A1 (en) 1992-01-22
DE69107542T2 (en) 1995-10-05

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