EP1541957A1 - Air pressuring pump for air gun - Google Patents

Air pressuring pump for air gun Download PDF

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Publication number
EP1541957A1
EP1541957A1 EP04300852A EP04300852A EP1541957A1 EP 1541957 A1 EP1541957 A1 EP 1541957A1 EP 04300852 A EP04300852 A EP 04300852A EP 04300852 A EP04300852 A EP 04300852A EP 1541957 A1 EP1541957 A1 EP 1541957A1
Authority
EP
European Patent Office
Prior art keywords
piston
head
cylinder head
gas
cylinder
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.)
Granted
Application number
EP04300852A
Other languages
German (de)
French (fr)
Other versions
EP1541957B1 (en
Inventor
Bertrand Marsac
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cybergun SA
Original Assignee
Cybergun SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Cybergun SA filed Critical Cybergun SA
Publication of EP1541957A1 publication Critical patent/EP1541957A1/en
Application granted granted Critical
Publication of EP1541957B1 publication Critical patent/EP1541957B1/en
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Classifications

    • 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
    • F41B11/60—Compressed-gas guns, e.g. air guns; Steam guns characterised by the supply of compressed gas
    • F41B11/68—Compressed-gas guns, e.g. air guns; Steam guns characterised by the supply of compressed gas the gas being pre-compressed before firing
    • F41B11/681—Pumping or compressor arrangements therefor
    • 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
    • F41B11/70—Details not provided for in F41B11/50 or F41B11/60
    • F41B11/71—Electric or electronic control systems, e.g. for safety purposes
    • 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
    • F41B11/50—Magazines for compressed-gas guns; Arrangements for feeding or loading projectiles from magazines
    • F41B11/57—Electronic or electric systems for feeding or loading
    • 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
    • F41B11/60—Compressed-gas guns, e.g. air guns; Steam guns characterised by the supply of compressed gas
    • F41B11/64—Compressed-gas guns, e.g. air guns; Steam guns characterised by the supply of compressed gas having a piston effecting a compressor stroke during the firing of each shot
    • 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
    • F41B11/80—Compressed-gas guns, e.g. air guns; Steam guns specially adapted for particular purposes
    • F41B11/89—Compressed-gas guns, e.g. air guns; Steam guns specially adapted for particular purposes for toys

Definitions

  • the invention relates to a gas pump or compressed air for replica Bullet gun of the "Air Soft Gun ®” or “Soft Air ®” type.
  • the invention relates more specifically to the piston head and the cylinder head of the gas pump which have shapes, adapted to each other, to ensure a better escape of gas or compressed air to the gun of the replica weapon.
  • the invention finds applications in the field of replication weapon, long or stitch, spring operated with air compression or compression of another gas, with manual or electric arming.
  • the invention applies, in particular, to replica weapons whose projectiles are plastic balls, very light, of a diameter about 6 mm.
  • a gear system 5 in the weapon body acts on the pump 6 which then evacuates the air or the gas contained in said pump towards the barrel 1 so as to project the ball into plastic out of the barrel of the weapon replica.
  • FIG. 2 represents a conventional pump system that can be found commonly found in most weapon replicas.
  • This pump system 6 comprises a cylinder 7 which forms the walls of a containment compartment 72 some gas.
  • the cylinder 7 comprises a cylinder head 71 which forms a wall side, barrel side 1, of said compartment 72.
  • This pump system 6 also comprises a piston 8 provided with a piston head 81. The piston is pushed by a compression spring 11 inside the compartment 72, towards the cylinder head 71.
  • Figure 2 shows two possible positions of the piston in the compartment 72: the upper part of the piston is shown in its position closed, that is to say when the piston is against the cylinder head and the part bottom shows the open position of the piston, that is to say when the piston is retained by the compression spring 11. These two positions will be described in detail later.
  • the movement of the piston head 81, driven by the whole of the piston 8, towards the cylinder head 71 ensures a compression of the gas located in compartment 72.
  • This compressed gas which then seeks to to escape from the compartment 72, engulfs in an ejection nozzle 9 connecting the cylinder head 71 and the barrel 1.
  • This nozzle 9 is generally cylindrical and housed inside the central orifice 73 of the cylinder head. He has a diameter at most equal to that of the balls so that the balls do not can enter the mouthpiece.
  • the tip can be of different shapes, depending, in particular, on the model of the replica weapon, for example if This is an electric or manual model.
  • the tip 9 comprises a fixed part 9a integral with the cylinder head 71 and a part mobile 9b connected to the drive fork of the loading tip which ensures the linear movement forward / backward. This range being itself driven by a pin on one of the toothed wheels of the gear system and a return spring. So, before the head of piston does not crash against the cylinder head, the moving part 9b of the tip 9 is pushed towards the barrel 1, which pushes the ball located at the head from the magazine to the barrel entrance in the barrel joint. At the same time, gas evacuated from the compartment 72 passes through the tip 9, reaches the ball and the propels out of the barrel.
  • the tip 9 is completely fixed, but the pump being movable (because located inside the breech which is movable), the loading the ball into the barrel is done in the same way. The marble is then propelled out of the barrel in the same way under the effect of the gas.
  • the compartment 72 has a large volume and the gas that is in this volume is decompressed.
  • the compression spring 11 is decompressed, released as a result of the action on the trigger, it pushes the piston 8 into the cylinder 7 to the cylinder head 71, that is to say in a closed position, thereby reducing the volume of the compartment 72 and thereby creating the gases tablets which, evacuated by the tip 9, eject the ball.
  • the piston 8 is then driven by a rack 84 again to the rear in compressing the spring to prepare the next shot. This movement of the piston 8 has the effect of compressing the gas in compartment 72.
  • the head cylinder 71 is flat. It comprises, in its center, an orifice 73 gas discharge, in which is housed an end of the nozzle ejection 9. The gas compressed by the piston 8 in the compartment 72 then escapes from said compartment by this nozzle 9.
  • the shape of the head of piston 81 is adapted to the shape of the cylinder head 71.
  • the piston head 81 is flat, like the cylinder head. In the closed position, the head of piston 81 and the cylinder head 71 are therefore in mechanical contact with each other. the other.
  • the invention proposes a gas pump or compressed air in which the piston head has a conical shape that comes fit into the cylinder head whose shape is adapted to that of the piston head.
  • the cylinder head forms a funnel allowing the gas compressed to be directed to the central hole of the cylinder head and so to the ejection tip.
  • the funnel shape of the cylinder head associated with the tapered shape of the piston head can significantly reduce the resistance encountered by the gas to escape from the compartment of gas restraint, by the ejection tip.
  • This pump is characterized by the fact that, on the one hand, the piston head has a conical shape and, on the other hand, the cylinder head has a shape in funnel, complementary to the conical shape of the piston head.
  • the head of cylinder and the piston head have shapes facilitating the thrust of the gas compressed to the ejection tip.
  • a compressed air pump we describe a compressed air pump, it being understood that any other gas used usually in the replica weapons pumps can also be used in the pump of the invention.
  • FIG. 3 shows a side view, in section, of the compressed air pump of the invention.
  • This figure 3 shows a cylinder 7 forming an air holding compartment 72.
  • This cylinder 7 is provided with a cylinder head 71 in the center of which an orifice 73 allows the evacuation of air towards the barrel of the replica weapon.
  • One end of a mouthpiece ejection 9, identical to that of the prior art, is housed near this central orifice 73.
  • This FIG. 3 also shows a piston 8 which can be move within compartment 72.
  • the piston 8 has a conical piston head 81, that is to say which has the shape of a cone whose summit is flattened.
  • the cylinder head 71 has a funnel shape. In other words, the cylinder head forms a conical neck whose center is the orifice 73.
  • the shape of the piston head 81 is adapted to fit into the funnel shape of the cylinder head 71.
  • the cylinder head 71 is fixed in the cylinder 7. It comprises a central orifice 73.
  • the ejection nozzle 9, in the invention, comprises a first end which passes through the orifice 73 to open into the compartment 72. This first end is housed in the cylinder head, near said orifice 73. The second end opens into the barrel of the weapon replica.
  • the tip 9 is inserted into the cylinder head by overmolding.
  • the ejection tip 9 is intended to make to pass the compressed air from the compartment 72 of air compression, to the barrel in which a plastic ball is pending deportation.
  • the flow of compressed air ensures the expulsion of the ball.
  • the tip of ejection In the case of a replica electrically charged weapon, the tip of ejection is mobile, the arming of the ball being done by a movement of this tip animated by the training fork. This displacement is shown in Figure 3 by arrows. In the case of a model electric, the displacement of the ejection tip, also called the mouthpiece loading, allows to push the ball in the barrel at the time of the shot.
  • the cylinder head 71 is made airtight, inside the cylinder 7, by means of an O-ring 74 placed in a housing of the head of cylinder.
  • the piston head 81 comprises a first flange 89 and a second flange 90.
  • the second flange 90 has a conical shape. It is this flask that is in contact with compressed air.
  • the flat top of the cone of the second flange located opposite the orifice 73 of the cylinder head, allows to direct maximum compressed air to the central hole of the cylinder head.
  • the first flange 89 is located at the rear of the second flange. It serves as an interface between the piston head 81 and the other elements of the piston 8. In particular, the first flange 89 is fixed on the rack 84 for driving the piston.
  • a screw 85 passes through the second flange 90 and the first flange 89.
  • This screw 85 is screwed into a nut 86, against which the spring 11 is supported.
  • This nut 86 has a rotational locking lug 83 which is inserted in the first flange 89 of the piston.
  • This locking pin 83 makes it possible to avoid any rotation of the piston 8 inside the cylinder 7.
  • An O-ring 88 placed between the first flange 89 and the second flange 90 of the piston, ensures the seal between the piston and the cylinder.
  • This seal toric 88 is placed in a housing 91 made in the first flange 89, whose volume is greater than the diameter of the joint. So when the head of piston approaches the cylinder head, a little compressed air from the compartment 72 passes into the housing 91 of the O-ring, by through the passage holes 92. This has the effect of pressing the seal outwards, that is to say against the cylinder 7, which ensures the seal between the piston head and the cylinder, avoiding any air rejection behind the piston head.
  • the pump system also comprises a damper 87 located between the piston head 81 and the cylinder head 71.
  • damper 87 may be an O-ring. Its role is to dampen contact between the piston head and the cylinder head, at the moment when the piston head comes crashing against the cylinder head. Indeed, given the shape of the cylinder head and the piston head, the compressed air is very quickly in the ejection tip, so that the piston speed arriving on the cylinder head is relatively important.
  • This damper, or damping gasket, 87 avoids violent mechanical contact between the piston head and the cylinder head, which could damage one or the other of heads.
  • the damping gasket 87 thus ensures minimum distance required between the cylinder head and the piston head to prevent shock of the piston head on the cylinder head.
  • the compressed air pump of the invention when user presses the trigger of the replica weapon, and the spring drive the piston head to the cylinder head.
  • the air present in the compartment air retainer 72 is then compressed. Due to the shape of the piston heads and cylinder, the flow of compressed air is directed directly to the orifice 73 and therefore to the ejection nozzle 9. The air flow is thus concentrated in one overall mass towards the center of the cylinder head.
  • This pump therefore makes it possible to considerably reduce the resistance encountered by the air as it escapes through the ejection nozzle. This resistance is further diminished by using means intended to make swirl the airflow to the ejector tip.
  • These means consist of fins placed on the surface of the cylinder head. The piston head then has slots or notches for receiving these fins, that is to say to fit around the fins, when the piston head is close of the cylinder head.
  • FIG. 4B shows a view in side cut of the cylinder head.
  • the mouthpiece ejection 9 which terminates in the central orifice 73 of the cylinder head 71.
  • the cylinder head comprises fins 75 for swirling the air flow to the central orifice and therefore towards the ejection tip.
  • This figure also shows the O-ring 87, placed at the front of the cylinder head so that the piston head and the cylinder head can not come into direct contact with each other, when all the compressed air has been evacuated.
  • FIG. 4A shows a front sectional view of the cylinder head 71.
  • the cylinder head 71 on which are fixed different fins 75.
  • these fins are number of six. Their number, shape and location are chosen from way to cause a vortex of compressed air flow to the center of the cylinder head that is to say towards the orifice 73.
  • These fins can be fixed on the cylinder head by any known fastening means. They can also be molded with the cylinder head.
  • FIG. 5A there is shown a side sectional view of the head piston of the invention.
  • This view shows the end of the piston head 81 with its second flange 90 in the shape of a flattened cone and its first flange 89, both separated by a seal 88. It also shows the assembly screw 85 which passes through the piston head to fix the different elements of the piston together.
  • FIG. 5B shows a front sectional view of the piston head 81.
  • This FIG. 5B shows six slots 93 intended to receive the six fins of the cylinder head. These slots 93 have dimensions and adapted shapes to fit around the fins. These slots are made in the second flange 90, for example during the molding of said flange.
  • FIG. 5B also shows six airflow orifices 92 towards the seal 88, an orifice 92 being formed at the bottom of each slot 93. It should be noted, however, that the number and location of airflow may vary depending on the type of joint used and the model of the replica weapon.
  • FIG. 6 schematically represents the air flow obtained at inside the cylinder head.
  • This airflow is schematized by arrows.
  • this compressed air flow is led by the fins 75 towards the center of the cylinder head 71, which forms, in the vicinity the central orifice 73, a vortex ensuring a faster ejection of the flow of air in the ejection tip.
  • the compressed air between the fins 75 sees its speed increase and starts to turn converging towards the center of the cylinder head, thus creating a centripetal swirl engulfing the ejection tip, which substantially increases the speed of the air and therefore the energy of the flow intended to propel the ball located at the entrance of the barrel.

Abstract

The pump has a cylinder (7) with a gas storage compartment (72) and a funnel shaped cylinder head (71). A gas ejecting nozzle (9) has two ends opening in the compartment and in a barrel of a replica gun, respectively. A piston (8) has a piston head moving in the compartment to compress the gas and having a conical shape corresponding to the funnel shaped head. The head (71) permits to direct the compressed gas towards the nozzle.

Description

Domaine de l'inventionField of the invention

L'invention concerne une pompe à gaz ou air comprimé pour réplique d'arme à projection de billes du type "Air Soft Gun ® "ou "Soft Air ® ". L'invention concerne, plus précisément, la tête de piston et la tête de cylindre de la pompe à gaz qui ont des formes, adaptées l'une à l'autre, pour assurer un meilleur échappement du gaz ou de l'air comprimé vers le canon de la réplique d'arme.The invention relates to a gas pump or compressed air for replica Bullet gun of the "Air Soft Gun ®" or "Soft Air ®" type. The invention relates more specifically to the piston head and the cylinder head of the gas pump which have shapes, adapted to each other, to ensure a better escape of gas or compressed air to the gun of the replica weapon.

L'invention trouve des applications dans le domaine de la réplique d'arme, longue ou de point, fonctionnant à ressort avec compression d'air ou compression d'un autre gaz, avec un armement manuel ou électrique. L'invention s'applique, en particulier, aux répliques d'armes dont les projectiles sont des billes en matière plastique, très légères, d'un diamètre environ 6 mm.The invention finds applications in the field of replication weapon, long or stitch, spring operated with air compression or compression of another gas, with manual or electric arming. The invention applies, in particular, to replica weapons whose projectiles are plastic balls, very light, of a diameter about 6 mm.

Etat de la techniqueState of the art

Dans le domaine des répliques d'armes, de nombreux modèles d'armes à feu sont reproduits dans le but de réaliser des jouets, pour enfants ou pour adultes. Ces répliques d'armes sont généralement des armes qui projettent, à la place des balles ou des plombs des armes réelles, des projectiles en plastiques tels que des billes d'un diamètre de l'ordre de 6 millimètres. Ces billes en plastique sont éjectées de la réplique d'arme au moyen d'un système de pompe à gaz ou à air comprimé. Un exemple de réplique d'arme, muni d'un système classique de pompe à gaz comprimé est représenté sur la figure 1. Cette réplique d'arme comporte, comme toute réplique d'arme :

  • un corps d'arme comprenant notamment un cylindre et un piston, décrits ultérieurement,
  • un canon 1 duquel est éjecté la bille 10,
  • une crosse 2 autour de laquelle le joueur place sa main,
  • un pontet 3 dans lequel le joueur introduit son index,
  • une détente 4, mobile à l'intérieur du pontet et sur laquelle le joueur appuie pour déclencher le tir d'une bille en plastique 10, et
  • lorsque l'arme est manuelle, une touche d'armement (non visible sur la figure 1) permettant de réarmer la réplique d'arme avec un nouvelle bille stockée dans un chargeur 12.
In the field of replica weapons, many models of firearms are reproduced for the purpose of making toys for children or adults. These replica weapons are usually weapons that project, instead of bullets or pellets real weapons, projectiles plastic such as beads with a diameter of about 6 millimeters. These plastic balls are ejected from the replica weapon by means of a gas pump or compressed air system. An example of a replica weapon, equipped with a conventional compressed gas pump system, is shown in FIG. 1. This weapon replica comprises, like any replica weapon:
  • a weapon body including a cylinder and a piston, described later,
  • a barrel 1 from which the ball 10 is ejected,
  • a stick 2 around which the player places his hand,
  • a trigger guard 3 in which the player introduces his index,
  • a trigger 4, movable inside the trigger guard and on which the player presses to trigger the firing of a plastic ball 10, and
  • when the weapon is manual, an arming key (not visible in Figure 1) to rearm the weapon replica with a new ball stored in a charger 12.

Lorsque le joueur appuie sur la détente 4, un système d'engrenage 5, dans le corps d'arme, agit sur la pompe 6 qui évacue alors l'air ou le gaz contenu dans ladite pompe vers le canon 1 de façon à projeter la bille en plastique hors du canon de la réplique d'arme.When the player presses the trigger 4, a gear system 5, in the weapon body, acts on the pump 6 which then evacuates the air or the gas contained in said pump towards the barrel 1 so as to project the ball into plastic out of the barrel of the weapon replica.

La figure 2 représente un système de pompe classique que l'on trouve couramment dans la plupart des répliques d'armes. Ce système de pompe 6 comporte un cylindre 7 qui forme les parois d'un compartiment 72 de retenue du gaz. Le cylindre 7 comporte une tête de cylindre 71 qui forme une paroi latérale, coté canon 1, dudit compartiment 72. Ce système de pompe 6 comporte aussi un piston 8 muni d'une tête de piston 81. Le piston est poussé par un ressort de compression 11 à l'intérieur du compartiment 72, vers la tête de cylindre 71.FIG. 2 represents a conventional pump system that can be found commonly found in most weapon replicas. This pump system 6 comprises a cylinder 7 which forms the walls of a containment compartment 72 some gas. The cylinder 7 comprises a cylinder head 71 which forms a wall side, barrel side 1, of said compartment 72. This pump system 6 also comprises a piston 8 provided with a piston head 81. The piston is pushed by a compression spring 11 inside the compartment 72, towards the cylinder head 71.

La figure 2 montre deux positions possibles du piston dans le compartiment 72 : la partie supérieure du piston est montrée dans sa position fermée, c'est-à-dire lorsque le piston est contre la tête de cylindre et la partie inférieure montre la position ouverte du piston, c'est-à-dire lorsque le piston est retenu par le ressort de compression 11. Ces deux positions seront décrites en détail ultérieurement.Figure 2 shows two possible positions of the piston in the compartment 72: the upper part of the piston is shown in its position closed, that is to say when the piston is against the cylinder head and the part bottom shows the open position of the piston, that is to say when the piston is retained by the compression spring 11. These two positions will be described in detail later.

Le mouvement de la tête de piston 81, entraínée par l'ensemble du piston 8, vers la tête de cylindre 71 assure une compression du gaz se trouvant dans le compartiment 72. Ce gaz comprimé, qui cherche alors à s'échapper du compartiment 72, s'engouffre dans un embout d'éjection 9 reliant la tête de cylindre 71 et le canon 1. Cet embout 9 est généralement cylindrique et logé à l'intérieur de l'orifice central 73 de la tête de cylindre. Il a un diamètre au plus égal à celui des billes de façon à ce que les billes ne puissent pénétrer dans l'embout. L'embout peut être de formes différentes, en fonction, notamment, du modèle de la réplique d'arme, par exemple s'il s'agit d'un modèle électrique ou manuel.The movement of the piston head 81, driven by the whole of the piston 8, towards the cylinder head 71 ensures a compression of the gas located in compartment 72. This compressed gas, which then seeks to to escape from the compartment 72, engulfs in an ejection nozzle 9 connecting the cylinder head 71 and the barrel 1. This nozzle 9 is generally cylindrical and housed inside the central orifice 73 of the cylinder head. He has a diameter at most equal to that of the balls so that the balls do not can enter the mouthpiece. The tip can be of different shapes, depending, in particular, on the model of the replica weapon, for example if This is an electric or manual model.

Dans les modèles de répliques d'armes électriques, l'embout 9 comporte une partie fixe 9a solidaire de la tête de cylindre 71 et une partie mobile 9b reliée à la fourchette d'entraínement de l'embout de chargement qui assure le mouvement linéaire avant/arrière . Cette fourchette étant elle-même entraínée par un ergot se trouvant sur une des roues dentée du système d'engrenage et un ressort de rappel. Ainsi, avant que la tête de piston ne vienne s'écraser contre la tête de cylindre, la partie mobile 9b de l'embout 9 est poussée vers le canon 1, ce qui pousse la bille située à la tête du chargeur vers l'entrée du canon dans le joint du canon. Parallèlement, le gaz évacué hors du compartiment 72 traverse l'embout 9, atteint la bille et la propulse hors du canon.In models of replicas of electric weapons, the tip 9 comprises a fixed part 9a integral with the cylinder head 71 and a part mobile 9b connected to the drive fork of the loading tip which ensures the linear movement forward / backward. This range being itself driven by a pin on one of the toothed wheels of the gear system and a return spring. So, before the head of piston does not crash against the cylinder head, the moving part 9b of the tip 9 is pushed towards the barrel 1, which pushes the ball located at the head from the magazine to the barrel entrance in the barrel joint. At the same time, gas evacuated from the compartment 72 passes through the tip 9, reaches the ball and the propels out of the barrel.

Dans les modèles manuels, l'embout 9 est totalement fixe, mais la pompe étant mobile (car située à l'intérieur de la culasse qui est mobile), le chargement de la bille dans le canon s'effectue de la même façon . La bille est alors propulsée hors du canon de la même façon sous l'effet du gaz.In the manual models, the tip 9 is completely fixed, but the pump being movable (because located inside the breech which is movable), the loading the ball into the barrel is done in the same way. The marble is then propelled out of the barrel in the same way under the effect of the gas.

Autrement dit, lorsque le piston 8 est en position ouverte, c'est-à-dire que le ressort de compression 11 est comprimé, maintenant le piston 8 vers l'arrière de l'arme (c'est-à-dire vers la crosse, opposée du canon), alors le compartiment 72 a un large volume et le gaz qui se trouve dans ce volume est décomprimé. Lorsque le ressort de compression 11 est décomprimé, libéré à la suite de l'action sur la détente, il pousse le piston 8 dans le cylindre 7 vers la tête cylindre 71, c'est-à-dire dans une position fermée, réduisant ainsi le volume du compartiment 72 et créant ainsi les gaz comprimés qui, s'évacuant par l'embout 9, éjecteront la bille. Le piston 8 est ensuite entraíné par une crémaillère 84 de nouveau vers l'arrière en comprimant le ressort pour préparer le tir suivant. Ce mouvement du piston 8 a pour effet de comprimer le gaz dans le compartiment 72.In other words, when the piston 8 is in the open position, that is to say that the compression spring 11 is compressed, keeping the piston 8 towards the back of the weapon (that is to say towards the butt, opposite the barrel), then the compartment 72 has a large volume and the gas that is in this volume is decompressed. When the compression spring 11 is decompressed, released as a result of the action on the trigger, it pushes the piston 8 into the cylinder 7 to the cylinder head 71, that is to say in a closed position, thereby reducing the volume of the compartment 72 and thereby creating the gases tablets which, evacuated by the tip 9, eject the ball. The piston 8 is then driven by a rack 84 again to the rear in compressing the spring to prepare the next shot. This movement of the piston 8 has the effect of compressing the gas in compartment 72.

Dans une pompe à gaz classique, comme celle de la figure 2, la tête de cylindre 71 est plane. Elle comporte, en son centre, un orifice 73 d'évacuation du gaz, dans lequel est logé une extrémité de l'embout d'éjection 9. Le gaz comprimé par le piston 8 dans le compartiment 72 s'échappe alors dudit compartiment par cet embout 9. La forme de la tête de piston 81 est adaptée à la forme de la tête de cylindre 71. La tête de piston 81 est donc plane, comme la tête de cylindre. En position fermée, la tête de piston 81 et la tête de cylindre 71 sont donc en contact mécanique l'une avec l'autre.In a conventional gas pump, like that of Figure 2, the head cylinder 71 is flat. It comprises, in its center, an orifice 73 gas discharge, in which is housed an end of the nozzle ejection 9. The gas compressed by the piston 8 in the compartment 72 then escapes from said compartment by this nozzle 9. The shape of the head of piston 81 is adapted to the shape of the cylinder head 71. The piston head 81 is flat, like the cylinder head. In the closed position, the head of piston 81 and the cylinder head 71 are therefore in mechanical contact with each other. the other.

Or, comme la tête du piston et la tête du cylindre sont planes, le flux d'air comprimé s'échappe du compartiment de façon aléatoire. En d'autres termes, lorsque la tête du piston s'approche de la tête du cylindre, le flux de gaz comprimé a du mal à s'échapper par l'embout 9 dont la dimension est petite devant les parties planes des têtes de piston et t de cylindre. En effet, du fait de la réduction drastique du diamètre à la sortie du flux de gaz vers le canon par rapport au diamètre bien plus important du cylindre, la plus grande partie du gaz comprimé se trouve bloquée contre le mur que forme la tête de cylindre plane. Le flux de gaz cherche à s'échapper par l'embout d'éjection 9 mais il a du mal car il se crée des turbulences contradictoires importantes. Ce phénomène est d'autant plus important que la différence entre le diamètre du cylindre et le diamètre de l'embout d'éjection est grand. En effet, si on augmente la taille de la pompe de façon à augmenter la quantité de gaz comprimé dans le compartiment, et donc la force de propulsion de la bille, on n'augmente pas pour autant le diamètre de l'embout d'éjection puisque ce diamètre est fonction du diamètre de la bille. Ainsi, plus on augmente le diamètre de la pompe et plus grande est la disproportion entre la taille de l'embout d'éjection et la surface plane des têtes de piston et de cylindre. En conséquence, le piston est ralenti dans sa course à l'approche de la tête de cylindre, ce qui provoque des pertes sensibles du rendement de la pompe. Les pertes dues aux parties planes de la pompe sont donc encore plus grandes, en proportion, lorsque les dimensions de la pompe sont grandes.However, as the piston head and the cylinder head are flat, the flow compressed air escapes from the compartment randomly. In others terms, when the piston head approaches the cylinder head, the flow of compressed gas has difficulty escaping through the tip 9 whose size is small in front of the flat parts of the piston heads and cylinder t. Indeed, because of the drastic reduction of the diameter at the exit of the gas flow towards the barrel relative to the much larger diameter of the cylinder, the larger part of the compressed gas is blocked against the wall formed by the head of flat cylinder. The flow of gas seeks to escape through the ejection tip 9 but it is difficult because it creates important contradictory turbulences. This phenomenon is all the more important as the difference between diameter of the cylinder and the diameter of the ejection tip is large. Indeed, if you increase the size of the pump to increase the amount of gas compressed in the compartment, and therefore the propelling force of the ball, one does not increase the diameter of the ejection tip since this diameter is a function of the diameter of the ball. So, the more you increase the diameter of the pump and larger is the disproportion between the size of the ejection tip and the flat surface of the piston and cylinder heads. In As a result, the piston is slowed down as it approaches the head of the cylinder, which causes significant losses in the efficiency of the pump. The losses due to the flat parts of the pump are therefore even more large, in proportion, when the dimensions of the pump are large.

Pour palier à ce problème, les fabricants choisissent généralement d'utiliser un ressort de compression plus fort, c'est-à-dire de plus grande raideur, de façon à compenser les pertes dues aux turbulences. Mais ce ressort de plus grande raideur nécessite une force d'appui plus importante sur la touche d'armement.To overcome this problem, manufacturers generally choose to use a stronger compression spring, that is to say larger stiffness, so as to compensate for losses due to turbulence. But Spring of greater stiffness requires a greater bearing force on the arming key.

C'est pour cette raison que les répliques d'armes à ressort, à armement manuel posent un véritable problème aux utilisateurs qui ont peu de force et, en particulier aux femmes, ou aux enfants uniquement lorsqu'il s'agit de modèles ayant un agrément « jouet ». En effet, ces derniers sont des difficultés pour armer car le ressort est raide, ce qui peut provoquer des incidents de tir voir un enrayement.It is for this reason that replicas of spring weapons, Manual arming pose a real problem for users who have little force and, in particular, to women or children only when These are models with "toy" approval. Indeed, these are difficulties in arming because the spring is stiff, which can cause Shooting incidents see a jam.

En ce qui concerne les répliques d'armes automatiques électriques, c'est le moteur qui souffre le plus du fait de l'existence d'un ressort à grande raideur. Il faut alors un moteur plus puissant, qui consomme plus de courant. Or, ce moteur est alimenté par une batterie, dont la taille est limitée par le volume disponible, pour la batterie, dans la réplique d'arme. L'autonomie du moteur de la réplique d'arme est donc largement réduite par l'utilisation d'un ressort à forte raideur. De plus, la boíte de réduction composée de plusieurs pignons et roues dentées fatiguent très vite et les dentures finissent par casser.With regard to replicas of automatic electric weapons, it is the engine that suffers the most because of the existence of a large spring. stiffness. It requires a more powerful engine, which consumes more power. However, this engine is powered by a battery, whose size is limited by the available volume, for the battery, in the weapon replica. The autonomy of engine of the weapon replica is therefore greatly reduced by the use of a spring with high stiffness. In addition, the reduction box composed of several sprockets and sprockets get tired very quickly and the teeth end up break.

Exposé de l'inventionPresentation of the invention

L'invention a justement pour but de remédier aux inconvénients des techniques précédentes. A cette fin, l'invention propose une pompe à gaz ou air comprimé dans laquelle la tête de piston a une forme conique qui vient s'emboíter dans la tête de cylindre dont la forme est adaptée à celle de la tête de piston. La tête de cylindre forme un entonnoir permettant au gaz comprimé d'être dirigé vers l'orifice central de la tête de cylindre et donc vers l'embout d'éjection. La forme en entonnoir de la tête de cylindre associée à la forme conique de la tête de piston permet de diminuer considérablement la résistance rencontrée par le gaz pour s'échapper du compartiment de retenue de gaz, par l'embout d'éjection.The purpose of the invention is precisely to remedy the drawbacks of previous techniques. For this purpose, the invention proposes a gas pump or compressed air in which the piston head has a conical shape that comes fit into the cylinder head whose shape is adapted to that of the piston head. The cylinder head forms a funnel allowing the gas compressed to be directed to the central hole of the cylinder head and so to the ejection tip. The funnel shape of the cylinder head associated with the tapered shape of the piston head can significantly reduce the resistance encountered by the gas to escape from the compartment of gas restraint, by the ejection tip.

De façon plus précise, l'invention concerne une pompe à gaz, pour réplique d'arme à projection de billes, comportant :

  • un cylindre formant un compartiment de retenue d'un gaz et muni d'une tête de cylindre formant une paroi latérale dudit compartiment de retenue, ladite tête de cylindre comprenant un orifice central,
  • un embout d'éjection du gaz ayant une première extrémité débouchant dans le compartiment de retenue et une seconde extrémité débouchant dans un canon de la réplique d'arme, et
  • un piston muni d'une tête de piston mobile dans le compartiment de retenue et apte à comprimer le gaz dans ledit compartiment.
More precisely, the invention relates to a gas pump, for a replica of a ball projection weapon, comprising:
  • a cylinder forming a gas retaining compartment and provided with a cylinder head forming a side wall of said retaining compartment, said cylinder head including a central orifice,
  • a gas ejection nozzle having a first end opening into the containment compartment and a second end opening into a barrel of the weapon replica, and
  • a piston provided with a movable piston head in the holding compartment and adapted to compress the gas in said compartment.

Cette pompe se caractérise par le fait que, d'une part, la tête de piston a une forme conique et, d'autre part, la tête de cylindre a une forme en entonnoir, complémentaire de la forme conique de la tête de piston.This pump is characterized by the fact that, on the one hand, the piston head has a conical shape and, on the other hand, the cylinder head has a shape in funnel, complementary to the conical shape of the piston head.

Avantageusement, la pompe à gaz de l'invention peut comporter l'une des caractéristiques suivantes :

  • La tête de cylindre comporte des ailettes de déflexion du gaz,
  • La tête du piston comporte des fentes aptes à recevoir les ailettes de la tête de cylindre,
  • La pompe à gaz comporte un joint d'amortissement placé entre la tête de cylindre et la tête de piston,
  • Le joint d'amortissement est torique,
  • La pompe à gaz comporte un joint d'étanchéité torique entre un premier et un second flasque de la tête du piston,
  • La tête de piston comporte une vis d'assemblage traversant la tête de piston de part en part et se terminant dans un écrou d'assemblage, et
  • L'écrou comporte un ergot de blocage en rotation s'insérant dans un flasque de la tête de piston.
Advantageously, the gas pump of the invention may have one of the following characteristics:
  • The cylinder head has fins for deflecting the gas,
  • The piston head has slots adapted to receive the fins of the cylinder head,
  • The gas pump has a damping gasket placed between the cylinder head and the piston head,
  • The damping gasket is toric,
  • The gas pump has an O-ring seal between a first and a second flange of the piston head,
  • The piston head comprises an assembly screw passing through the piston head from one end to the other and ending in an assembly nut, and
  • The nut has a rotational locking lug inserted into a flange of the piston head.

Brève description des dessinsBrief description of the drawings

  • La figure 1, déjà décrite, représente un exemple de réplique d'arme classique.FIG. 1, already described, represents an example of a replica weapon classic.
  • La figure 2, déjà décrite, représente un exemple de pompe à gaz classique.FIG. 2, already described, represents an example of a gas pump classic.
  • La figure 3 représente une vue en coupe d'une pompe à gaz comprimé conforme à l'invention.FIG. 3 represents a sectional view of a gas pump tablet according to the invention.
  • Les figures 4A et 4B représentent des vues en coupe, respectivement de face et de côté, de la tête de cylindre de la pompe à gaz de l'invention.Figures 4A and 4B show sectional views, respectively front and side, of the cylinder head of the gas pump of the invention.
  • Les figures 5A et 5B représentent des vues en coupe, respectivement, de côté et de face, de la tête de piston de la pompe à gaz de l'invention.Figs. 5A and 5B show sectional views, respectively, side and front, the piston head of the gas pump of the invention.
  • La figure 6 représente schématiquement le flux tourbillonnaire centripète obtenu avec la pompe à gaz de l'invention.Figure 6 schematically shows the vortex flow centripetal obtained with the gas pump of the invention.

    • Description détaillée de modes de réalisation de l'inventionDETAILED DESCRIPTION OF EMBODIMENTS OF THE INVENTION

    Dans la pompe à air ou à gaz comprimé de l'invention, la tête de cylindre et la tête de piston ont des formes facilitant la poussée du gaz comprimé vers l'embout d'éjection. Dans la suite de cette description, on décrira une pompe à air comprimé, étant entendu que tout autre gaz utilisé habituellement dans les pompes des répliques d'armes peut aussi être utilisé dans la pompe de l'invention.In the air or compressed gas pump of the invention, the head of cylinder and the piston head have shapes facilitating the thrust of the gas compressed to the ejection tip. In the rest of this description, we describe a compressed air pump, it being understood that any other gas used usually in the replica weapons pumps can also be used in the pump of the invention.

    Sur la figure 3, on a représenté une vue de coté, en coupe, de la pompe à air comprimé de l'invention. Cette figure 3 montre un cylindre 7 formant un compartiment 72 de retenue d'air. Ce cylindre 7 est muni d'une tête de cylindre 71 au centre de laquelle un orifice 73 permet l'évacuation de l'air vers le canon de la réplique d'arme. Une extrémité d'un embout d'éjection 9, identique à celui de l'art antérieur, est logée à proximité de cet orifice central 73. Cette figure 3 montre également un piston 8 pouvant se mouvoir à l'intérieur du compartiment 72. FIG. 3 shows a side view, in section, of the compressed air pump of the invention. This figure 3 shows a cylinder 7 forming an air holding compartment 72. This cylinder 7 is provided with a cylinder head 71 in the center of which an orifice 73 allows the evacuation of air towards the barrel of the replica weapon. One end of a mouthpiece ejection 9, identical to that of the prior art, is housed near this central orifice 73. This FIG. 3 also shows a piston 8 which can be move within compartment 72.

    Dans l'invention, le piston 8 a une tête de piston 81 conique, c'est-à-dire qui a la forme d'un cône dont le sommet est aplati. La tête de cylindre 71 a une forme en entonnoir. En d'autres termes, la tête de cylindre forme un goulot conique dont le centre est l'orifice 73. La forme de la tête de piston 81 est adaptée pour s'emboíter dans la forme en entonnoir de la tête de cylindre 71.In the invention, the piston 8 has a conical piston head 81, that is to say which has the shape of a cone whose summit is flattened. The cylinder head 71 has a funnel shape. In other words, the cylinder head forms a conical neck whose center is the orifice 73. The shape of the piston head 81 is adapted to fit into the funnel shape of the cylinder head 71.

    La tête de cylindre 71 est fixe dans le cylindre 7. Elle comporte un orifice central 73. L'embout d'éjection 9, dans l'invention, comporte une première extrémité qui traverse l'orifice 73 pour déboucher dans le compartiment 72. Cette première extrémité est logée dans la tête de cylindre, à proximité dudit orifice 73. La seconde extrémité débouche dans le canon de la réplique d'arme. Dans un mode de réalisation de l'invention, l'embout 9 est inséré dans la tête de cylindre par surmoulage.The cylinder head 71 is fixed in the cylinder 7. It comprises a central orifice 73. The ejection nozzle 9, in the invention, comprises a first end which passes through the orifice 73 to open into the compartment 72. This first end is housed in the cylinder head, near said orifice 73. The second end opens into the barrel of the weapon replica. In one embodiment of the invention, the tip 9 is inserted into the cylinder head by overmolding.

    Comme dans l'art antérieur, l'embout d'éjection 9 est destiné à faire passer l'air comprimé depuis le compartiment 72 de compression d'air, jusqu'au canon dans lequel une bille en plastique est en attente d'expulsion. Dans le cas d'une réplique d'arme à armement manuel, le flux d'air comprimé assure l'expulsion de la bille.As in the prior art, the ejection tip 9 is intended to make to pass the compressed air from the compartment 72 of air compression, to the barrel in which a plastic ball is pending deportation. In the case of a manual weapon replica, the flow of compressed air ensures the expulsion of the ball.

    Dans le cas d'une réplique d'arme à chargement électrique, l'embout d'éjection est mobile, l'armement de la bille se faisant par un mouvement de cet embout animé par la fourchette d'entraínement. Ce déplacement est représenté sur la figure 3 par des flèches. Dans le cas d'un modèle électrique, le déplacement de l'embout d'éjection, appelé aussi embout de chargement, permet de pousser la bille dans le canon au moment du tir.In the case of a replica electrically charged weapon, the tip of ejection is mobile, the arming of the ball being done by a movement of this tip animated by the training fork. This displacement is shown in Figure 3 by arrows. In the case of a model electric, the displacement of the ejection tip, also called the mouthpiece loading, allows to push the ball in the barrel at the time of the shot.

    La tête de cylindre 71 est rendue étanche à l'air, à l'intérieur du cylindre 7, au moyen d'un joint torique 74 placé dans un logement de la tête de cylindre.The cylinder head 71 is made airtight, inside the cylinder 7, by means of an O-ring 74 placed in a housing of the head of cylinder.

    La tête de piston 81 comporte un premier flasque 89 et un second flasque 90. Le second flasque 90 a une forme conique. C'est ce flasque qui est en contact avec l'air comprimé. Le sommet aplati du cône du second flasque, situé en regard de l'orifice 73 de la tête de cylindre, permet de diriger au maximum l'air comprimé vers l'orifice central de la tête de cylindre. Le premier flasque 89 est situé à l'arrière du second flasque. Il sert d'interface entre la tête de piston 81 et les autres éléments du piston 8. En particulier, le premier flasque 89 est fixé sur la crémaillère 84 d'entraínement du piston. Une vis 85 traverse le second flasque 90 et le premier flasque 89. Cette vis 85 est vissée dans un écrou 86, contre lequel le ressort 11 est en appui. Cet écrou 86 comporte un ergot 83 de blocage en rotation qui vient s'insérer dans le premier flasque 89 du piston. Cet ergot de blocage 83 permet d'éviter toute rotation du piston 8 à l'intérieur du cylindre 7.The piston head 81 comprises a first flange 89 and a second flange 90. The second flange 90 has a conical shape. It is this flask that is in contact with compressed air. The flat top of the cone of the second flange, located opposite the orifice 73 of the cylinder head, allows to direct maximum compressed air to the central hole of the cylinder head. The first flange 89 is located at the rear of the second flange. It serves as an interface between the piston head 81 and the other elements of the piston 8. In particular, the first flange 89 is fixed on the rack 84 for driving the piston. A screw 85 passes through the second flange 90 and the first flange 89. This screw 85 is screwed into a nut 86, against which the spring 11 is supported. This nut 86 has a rotational locking lug 83 which is inserted in the first flange 89 of the piston. This locking pin 83 makes it possible to avoid any rotation of the piston 8 inside the cylinder 7.

    Un joint torique 88, placé entre le premier flasque 89 et le second flasque 90 du piston, assure l'étanchéité entre le piston et le cylindre. Ce joint torique 88 est placé dans un logement 91 réalisé dans le premier flasque 89, dont le volume est supérieur au diamètre du joint. Ainsi, lorsque la tête de piston s'approche de la tête de cylindre, un peu d'air comprimé du compartiment 72 passe dans le logement 91 du joint torique, par l'intermédiaire de trous de passage 92. Ceci a pour effet de plaquer le joint vers l'extérieur, c'est-à-dire contre le cylindre 7, ce qui assure l'étanchéité entre la tête du piston et le cylindre, évitant tout rejet d'air en arrière de la tête de piston.An O-ring 88, placed between the first flange 89 and the second flange 90 of the piston, ensures the seal between the piston and the cylinder. This seal toric 88 is placed in a housing 91 made in the first flange 89, whose volume is greater than the diameter of the joint. So when the head of piston approaches the cylinder head, a little compressed air from the compartment 72 passes into the housing 91 of the O-ring, by through the passage holes 92. This has the effect of pressing the seal outwards, that is to say against the cylinder 7, which ensures the seal between the piston head and the cylinder, avoiding any air rejection behind the piston head.

    Selon l'invention, le système de pompe comporte également un amortisseur 87 situé entre la tête de piston 81 et la tête de cylindre 71. Cet amortisseur 87 peut être un joint torique. Il a pour rôle d'amortir le contact entre la tête de piston et la tête de cylindre, au moment où la tête de piston vient s'écraser contre la tête de cylindre. En effet, compte tenu de la forme de la tête de cylindre et de la tête de piston, l'air comprimé se dégage très rapidement dans l'embout d'éjection, ce qui fait que la vitesse du piston arrivant sur la tête de cylindre est relativement importante. Cet amortisseur, ou joint d'amortissement, 87 permet d'éviter un contact mécanique violent entre la tête de piston et la tête de cylindre, ce qui pourrait endommager l'une ou l'autre de têtes. Le joint d'amortissement 87 assure ainsi une distance minimale nécessaire entre la tête de cylindre et la tête de piston pour éviter un choc de la tête de piston sur la tête de cylindre.According to the invention, the pump system also comprises a damper 87 located between the piston head 81 and the cylinder head 71. damper 87 may be an O-ring. Its role is to dampen contact between the piston head and the cylinder head, at the moment when the piston head comes crashing against the cylinder head. Indeed, given the shape of the cylinder head and the piston head, the compressed air is very quickly in the ejection tip, so that the piston speed arriving on the cylinder head is relatively important. This damper, or damping gasket, 87 avoids violent mechanical contact between the piston head and the cylinder head, which could damage one or the other of heads. The damping gasket 87 thus ensures minimum distance required between the cylinder head and the piston head to prevent shock of the piston head on the cylinder head.

    Ainsi, avec la pompe à air comprimé de l'invention, lorsqu'un utilisateur appuie sur la détente de la réplique d'arme, et le ressort entraínent la tête de piston vers la tête de cylindre. L'air présent dans le compartiment de retenu d'air 72 est alors comprimé. Du fait de la forme des têtes de piston et de cylindre, le flux d'air comprimé est dirigé directement vers l'orifice 73 et donc vers l'embout d'éjection 9. Le flux d'air est ainsi concentré en une masse globale vers le centre de la tête de cylindre. Thus, with the compressed air pump of the invention, when user presses the trigger of the replica weapon, and the spring drive the piston head to the cylinder head. The air present in the compartment air retainer 72 is then compressed. Due to the shape of the piston heads and cylinder, the flow of compressed air is directed directly to the orifice 73 and therefore to the ejection nozzle 9. The air flow is thus concentrated in one overall mass towards the center of the cylinder head.

    Cette pompe permet donc de diminuer considérablement la résistance rencontrée par l'air lorsqu'elle s'échappe par l'embout d'éjection. Cette résistance est encore diminuée en utilisant des moyens destinés à faire tourbillonner le flux d'air vers l'embout d'éjection. Ces moyens consistent en des ailettes placées sur la surface de la tête de cylindre. La tête de piston comporte alors des fentes ou entailles destinés à recevoir ces ailettes, c'est-à-dire à s'emboíter autour des ailettes, lorsque la tête de piston est proche de la tête de cylindre.This pump therefore makes it possible to considerably reduce the resistance encountered by the air as it escapes through the ejection nozzle. This resistance is further diminished by using means intended to make swirl the airflow to the ejector tip. These means consist of fins placed on the surface of the cylinder head. The piston head then has slots or notches for receiving these fins, that is to say to fit around the fins, when the piston head is close of the cylinder head.

    Les figures 4A et 4B représentent des vues en coupe de la tête de cylindre de l'invention. Plus précisément, la figure 4B montre une vue en coupe de coté de la tête de cylindre. On voit, sur cette figure, l'embout d'éjection 9 qui se termine dans l'orifice central 73 de la tête de cylindre 71. Dans le mode de réalisation de la figure 4B, la tête de cylindre comporte des ailettes 75 destinées à faire tourbillonner le flux d'air vers l'orifice central et donc vers l'embout d'éjection. Cette figure montre également le joint torique 87, placé à l'avant de la tête de cylindre de façon à ce que la tête de piston et la tête de cylindre ne puissent entrer en contact direct l'une avec l'autre, lorsque la totalité de l'air comprimé a été évacué.Figures 4A and 4B show sectional views of the head of cylinder of the invention. More specifically, FIG. 4B shows a view in side cut of the cylinder head. We see, in this figure, the mouthpiece ejection 9 which terminates in the central orifice 73 of the cylinder head 71. In the embodiment of FIG. 4B, the cylinder head comprises fins 75 for swirling the air flow to the central orifice and therefore towards the ejection tip. This figure also shows the O-ring 87, placed at the front of the cylinder head so that the piston head and the cylinder head can not come into direct contact with each other, when all the compressed air has been evacuated.

    La figure 4A montre une vue en coupe de face de la tête de cylindre 71. On voit, sur cette figure, la tête de cylindre 71 sur laquelle sont fixées différentes ailettes 75. Dans le cas de la figure 4A, ces ailettes sont au nombre de six. Leur nombre, leur forme et leur emplacement sont choisis de façon à provoquer un tourbillon du flux d'air comprimé vers le centre de la tête de cylindre c'est-à-dire vers l'orifice 73. Ces ailettes peuvent être fixées sur la tête de cylindre par tous moyens de fixation connus. Elles peuvent aussi être moulées avec la tête de cylindre.FIG. 4A shows a front sectional view of the cylinder head 71. In this figure, we can see the cylinder head 71 on which are fixed different fins 75. In the case of FIG. 4A, these fins are number of six. Their number, shape and location are chosen from way to cause a vortex of compressed air flow to the center of the cylinder head that is to say towards the orifice 73. These fins can be fixed on the cylinder head by any known fastening means. They can also be molded with the cylinder head.

    Sur la figure 5A, on a représenté une vue en coupe de côté de la tête de piston de l'invention. Cette vue montre l'extrémité de la tête de piston 81 avec son second flasque 90 en forme de cône aplati et son premier flasque 89, tous deux séparés par un joint d'étanchéité 88. Elle montre également la vis d'assemblage 85 qui traverse la tête de piston pour fixer les différents éléments du piston ensemble.In Figure 5A, there is shown a side sectional view of the head piston of the invention. This view shows the end of the piston head 81 with its second flange 90 in the shape of a flattened cone and its first flange 89, both separated by a seal 88. It also shows the assembly screw 85 which passes through the piston head to fix the different elements of the piston together.

    La figure 5B montre une vue en coupe de face de la tête de piston 81. Cette figure 5B montre six fentes 93 destinées à recevoir les six ailettes de la tête de cylindre. Ces fentes 93 ont des dimensions et des formes adaptées pour s'emboíter autour des ailettes. Ces fentes sont réalisées dans le second flasque 90, par exemple lors du moulage dudit flasque.FIG. 5B shows a front sectional view of the piston head 81. This FIG. 5B shows six slots 93 intended to receive the six fins of the cylinder head. These slots 93 have dimensions and adapted shapes to fit around the fins. These slots are made in the second flange 90, for example during the molding of said flange.

    Cette figure 5B montre aussi six orifices 92 de passage d'air vers le joint d'étanchéité 88, un orifice 92 étant réalisé au fond de chaque fente 93. Il est à noter, toutefois, que le nombre et l'emplacement des orifices de passage d'air peut varier selon le type de joint utilisé et le modèle de la réplique d'arme.This FIG. 5B also shows six airflow orifices 92 towards the seal 88, an orifice 92 being formed at the bottom of each slot 93. It should be noted, however, that the number and location of airflow may vary depending on the type of joint used and the model of the replica weapon.

    La figure 6 représente schématiquement le flux d'air obtenu à l'intérieur de la tête de cylindre. Ce flux d'air est schématisé par des flèches. Comme on le voit sur la figure 6, ce flux d'air comprimé est dirigé par les ailettes 75 vers le centre de la tête de cylindre 71, ce qui forme, au voisinage de l'orifice central 73, un tourbillon assurant une éjection plus rapide du flux d'air dans l'embout d'éjection. En effet, l'air comprimé entre les ailettes 75 voit sa vitesse augmenter et se met à tourner en convergeant vers le centre de la tête de cylindre, créant ainsi un tourbillon centripète s'engouffrant par l'embout d'éjection, ce qui accroít sensiblement la vitesse de l'air et donc l'énergie du flux destiné à propulser la bille se trouvant à l'entrée du canon.FIG. 6 schematically represents the air flow obtained at inside the cylinder head. This airflow is schematized by arrows. As can be seen in FIG. 6, this compressed air flow is led by the fins 75 towards the center of the cylinder head 71, which forms, in the vicinity the central orifice 73, a vortex ensuring a faster ejection of the flow of air in the ejection tip. Indeed, the compressed air between the fins 75 sees its speed increase and starts to turn converging towards the center of the cylinder head, thus creating a centripetal swirl engulfing the ejection tip, which substantially increases the speed of the air and therefore the energy of the flow intended to propel the ball located at the entrance of the barrel.

    Claims (8)

    Pompe à gaz pour réplique d'arme à projection de billes, comportant : un cylindre (7) formant un compartiment de retenue d'un gaz (72) et muni d'une tête de cylindre (71) formant une paroi latérale dudit compartiment de retenue, ladite tête de cylindre comprenant un orifice central (73) un embout (9) d'éjection du gaz ayant une première extrémité débouchant dans le compartiment de retenue (72) et une seconde extrémité débouchant dans un canon (1) de la réplique d'arme, et un piston (8) muni d'une tête de piston (81) mobile dans le compartiment de retenue et apte à comprimer le gaz dans ledit compartiment, la tête de piston ayant une forme conique et la tête de cylindre ayant une forme en entonnoir, complémentaire de la forme conique de la tête de piston,    caractérisée en ce que la tête de cylindre comporte des moyens pour faire tourbillonner le flux d'air vers l'embout d'éjection.Gas pump for a replica of a ball projection weapon, comprising: a cylinder (7) forming a gas retaining compartment (72) and provided with a cylinder head (71) forming a side wall of said retaining compartment, said cylinder head including a central orifice (73) a gas ejection nozzle (9) having a first end opening into the retaining compartment (72) and a second end opening into a barrel (1) of the weapon replica, and a piston (8) provided with a piston head (81) movable in the holding compartment and adapted to compress the gas in said compartment, the piston head having a conical shape and the cylinder head having a funnel shape, complementary to the conical shape of the piston head, characterized in that the cylinder head has means for swirling the airflow to the ejection nozzle. Pompe à gaz pour réplique d'arme selon la revendication 1, caractérisée en ce que les moyens pour faire tourbillonner le flux d'air sont des ailettes (75).Gas pump for weapon replica according to claim 1, characterized in that the means for swirling the air flow are fins (75). Pompe à gaz pour réplique d'arme selon la revendication 1 ou 2, caractérisée en ce que la tête de piston comporte des fentes (93) aptes à recevoir les ailettes de la tête de cylindre.Gas pump for weapon replica according to claim 1 or 2, characterized in that the piston head has slots (93) adapted to receive the fins of the cylinder head. Pompe à gaz pour réplique d'arme selon l'une quelconque des revendications 1 à 3, caractérisée en ce qu'elle comporte un joint d'amortissement (87) placé entre la tête de cylindre et la tête de piston.Gas pump for weapon replica according to any one of claims 1 to 3, characterized in that it comprises a damping gasket (87) placed between the cylinder head and the piston head. Pompe à gaz pour réplique d'arme selon la revendication 4, caractérisée en ce que le joint d'amortissement est torique.Gas pump for weapon replica according to claim 4, characterized in that the damping gasket is toric. Pompe à gaz pour réplique d'arme selon l'une quelconque des revendications 1 à 4, caractérisée en ce qu'elle comporte un joint d'étanchéité (88) torique entre un premier et un second flasques de la tête de piston.Gas pump for a weapon replica according to one of claims 1 to 4, characterized in that it comprises a ring seal (88) between first and second flanges of the piston head. Pompe à gaz pour réplique d'arme selon l'une quelconque des revendications 1 à 6, caractérisée en ce que la tête de piston comporte une vis d'assemblage (85) traversant la tête de piston de part en part et débouchant dans un écrou d'assemblage (86).Gas pump for a weapon replica according to any one of claims 1 to 6, characterized in that the piston head comprises a connecting screw (85) passing through the piston head from one end to the other and opening into a nut assembly (86). Pompe à gaz pour réplique d'arme selon la revendication 7, caractérisée en ce que l'écrou comporte un ergot de blocage (83) en rotation, s'insérant dans un des flasques de la tête de piston.Gas pump for weapon replica according to claim 7, characterized in that the nut comprises a locking pin (83) in rotation, inserted in one of the flanges of the piston head.
    EP04300852A 2003-12-12 2004-12-07 Air pressuring pump for air gun Active EP1541957B1 (en)

    Applications Claiming Priority (2)

    Application Number Priority Date Filing Date Title
    FR0351032A FR2863698B1 (en) 2003-12-12 2003-12-12 COMPRESSED GAS PUMP FOR ARM REPLICA
    FR0351032 2003-12-12

    Publications (2)

    Publication Number Publication Date
    EP1541957A1 true EP1541957A1 (en) 2005-06-15
    EP1541957B1 EP1541957B1 (en) 2006-08-09

    Family

    ID=34508778

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP04300852A Active EP1541957B1 (en) 2003-12-12 2004-12-07 Air pressuring pump for air gun

    Country Status (12)

    Country Link
    US (1) US7114493B2 (en)
    EP (1) EP1541957B1 (en)
    JP (1) JP4048198B2 (en)
    KR (1) KR100646735B1 (en)
    AT (1) ATE335979T1 (en)
    DE (1) DE602004001840T2 (en)
    DK (1) DK1541957T3 (en)
    ES (1) ES2270319T3 (en)
    FR (1) FR2863698B1 (en)
    HK (1) HK1082539A1 (en)
    PT (1) PT1541957E (en)
    TW (1) TWI274842B (en)

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    US20060191523A1 (en) * 2004-12-07 2006-08-31 Paletz James S Apparatus for propelling projectiles
    US7730881B1 (en) * 2005-02-07 2010-06-08 Impulse Solutions Llc Portable electric motor driven compressed air projectile launcher
    EA024727B1 (en) * 2009-06-16 2016-10-31 Атак Шилах Санайи Ве Тиджарет Лимитед Ширкети High-power pneumatic weapon system
    US8931467B2 (en) * 2011-07-05 2015-01-13 Si Young Lee Magazine rifle
    GB201223006D0 (en) * 2012-12-20 2013-01-30 Roots Noel L A spring powered gas operated weapon
    US20150316345A1 (en) * 2013-09-07 2015-11-05 Gaither Tool Company, Inc. Quick-Release Valve Air Gun
    CN104034206B (en) * 2014-06-03 2015-09-02 绍兴市岭峰气枪制造有限公司 A kind of air bottle type air pistol
    CN107532873B (en) * 2015-03-24 2019-06-25 东京丸井株式会社 More ballistic projections type electric guns
    US10401120B2 (en) * 2015-03-24 2019-09-03 Tokyo Marui Co., Ltd. Cut-off device for electric mechanism in simulation gun
    US10350656B2 (en) 2016-11-11 2019-07-16 Milwaukee Electric Tool Corporation Drain clearing air gun
    US10955215B2 (en) * 2019-08-22 2021-03-23 Tricord Solutions, Inc. Projectile launching apparatus
    US11243045B2 (en) * 2020-06-05 2022-02-08 Tricord Solutions, Inc. Projectile launching apparatus
    US20230251056A1 (en) * 2022-02-09 2023-08-10 Tricord Solutions, Inc. Projectile Launching Apparatus

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    US5531210A (en) * 1994-11-16 1996-07-02 Hasbro, Inc. Toy gun

    Also Published As

    Publication number Publication date
    TW200523520A (en) 2005-07-16
    EP1541957B1 (en) 2006-08-09
    DE602004001840D1 (en) 2006-09-21
    DE602004001840T2 (en) 2007-03-08
    ATE335979T1 (en) 2006-09-15
    PT1541957E (en) 2006-12-29
    FR2863698A1 (en) 2005-06-17
    ES2270319T3 (en) 2007-04-01
    TWI274842B (en) 2007-03-01
    KR20050058984A (en) 2005-06-17
    US20050183709A1 (en) 2005-08-25
    FR2863698B1 (en) 2008-02-22
    JP4048198B2 (en) 2008-02-13
    JP2005172000A (en) 2005-06-30
    US7114493B2 (en) 2006-10-03
    KR100646735B1 (en) 2006-11-23
    HK1082539A1 (en) 2006-06-09
    DK1541957T3 (en) 2006-12-11

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