EP1963772B1 - Dispositif de prise de gaz, et canon ou arme presentant un tel dispositif de prise de gaz - Google Patents

Dispositif de prise de gaz, et canon ou arme presentant un tel dispositif de prise de gaz Download PDF

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Publication number
EP1963772B1
EP1963772B1 EP06829529A EP06829529A EP1963772B1 EP 1963772 B1 EP1963772 B1 EP 1963772B1 EP 06829529 A EP06829529 A EP 06829529A EP 06829529 A EP06829529 A EP 06829529A EP 1963772 B1 EP1963772 B1 EP 1963772B1
Authority
EP
European Patent Office
Prior art keywords
gas
barrel
gas cylinder
bleed arrangement
receptacle
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.)
Not-in-force
Application number
EP06829529A
Other languages
German (de)
English (en)
Other versions
EP1963772A1 (fr
Inventor
Norbert Fluhr
Berthold Weichert
Stefan Doll
Ernst WÖSSNER
Martin Stussak
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.)
Heckler und Koch GmbH
Original Assignee
Heckler und Koch GmbH
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 Heckler und Koch GmbH filed Critical Heckler und Koch GmbH
Publication of EP1963772A1 publication Critical patent/EP1963772A1/fr
Application granted granted Critical
Publication of EP1963772B1 publication Critical patent/EP1963772B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A5/00—Mechanisms or systems operated by propellant charge energy for automatically opening the lock
    • F41A5/18—Mechanisms or systems operated by propellant charge energy for automatically opening the lock gas-operated
    • F41A5/26—Arrangements or systems for bleeding the gas from the barrel
    • F41A5/28—Adjustable systems
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
    • F41A5/00—Mechanisms or systems operated by propellant charge energy for automatically opening the lock
    • F41A5/18—Mechanisms or systems operated by propellant charge energy for automatically opening the lock gas-operated
    • F41A5/26—Arrangements or systems for bleeding the gas from the barrel

Definitions

  • the invention relates to a gas take-off arrangement for a barrel or a pipe of a gas-pressure-loading self-loading weapon (eg a machine gun) with a standing with the bore in communicating gas cylinder having a first gas outlet opening, which cooperates with a throttle element.
  • a gas take-off device is for example from the DE 196 15 181 known.
  • barrel denotes both a gun barrel with moves and fields as well as a smooth gun barrel.
  • Directional indications such as top, bottom, front, back, right and left are given for an attacking weapon from the point of view of the shooter.
  • a gas piston is arranged in a gas cylinder.
  • the gas cylinder is largely closed at one end, so that between the gas piston end face and the end wall of the gas cylinder, a pressure chamber is formed, which is in communicating communication with the interior of the barrel.
  • the incoming gases build up a working pressure in the pressure chamber, which acts on the end face of the working piston.
  • the resulting force acts via the power piston on a drive linkage, which is part of the loading mechanism in the weapon, and the cartridge feed and removal causes the closure movement, and possibly the tensioning of the trigger mechanism.
  • the so accelerated charging also increases the cadence. This is accompanied by an increased consumption of ammunition and the mechanical stress on the weapons components is increasing rapidly.
  • the unnecessarily increased consumption of ammunition can be a logistical problem in the military use of such weapons, as more ammunition must be carried and provided at the site of the weapon, without the effect of the weapon is correspondingly improved.
  • the higher weapon load leads to increased wear and shorter maintenance and repair intervals.
  • a gas supply mechanism is provided which has a spring-loaded control valve which is intended to allow a part of the origin of the barrel of the weapon gases to escape in the event of excessive pressure and so gas pressure controlled to limit the speed of movement of the movable parts.
  • This solution is intended for semi-automatic firearms, especially shotguns, and requires a spring loaded control valve.
  • a gas take-off arrangement according to the preamble of claim 1 is in the EP 0 167 067 A described.
  • the object of the present invention is to provide an improved gas take-off device which at least partially eliminates the problems described above.
  • a gas take-off device In this case, run, gas cylinder, gas outlet opening and a throttle element are designed and arranged so that the temperature-induced change in length of the barrel, which occurs in continuous fire, causes a relative movement between the gas cylinder and throttle element, so that the throttle element, the gas outlet opening more or less freely and thus the in the pressure chamber acting gas pressure stabilized according to the running temperature.
  • a self-regulating gas sampling device is provided in which the change in length of the barrel changes the pressure and flow conditions in the gas cylinder so that the temperature-induced increased gas pressure in the barrel causes no significant pressure increase in the pressure chamber.
  • claim 2 relates to a throttle element, which is arranged in the interior and / or outside of the gas cylinder.
  • the relative movement is particularly easily ensured by the throttle element is fixed relative to a thermally less stressed housing component and the gas cylinder is fixed with respect to a running section.
  • the throttle element is used to control the throttle element so the axial relative movement between the corresponding barrel portion and the housing.
  • the throttle element is formed on a gas cylinder at least partially surrounding recording.
  • the gas cylinder is arranged axially displaceable for receiving.
  • This solution provides a structurally particularly simple operative connection between throttle element and gas cylinder and thus between the gas outlet opening and throttle element.
  • the throttle element is designed as a sealing zone, which is formed on the receptacle and corresponding to the axial barrel displacement mounted in the gas cylinder gas outlet opening reduced or increased.
  • the sealing zone pushes more or less over the first gas outlet opening and relocated or opened its cross-section and the resulting from the barrel bore forth in the pressure chamber pressure is more or less on the corresponding Covered or uncovered gas outlet opening reduced.
  • the adjustment of the receptacle causes a largely axial change in position of the throttle element with respect to the first gas outlet opening.
  • the gas cylinder with a connection part is firmly connected to the barrel.
  • this connector is also advantageously the communicating connection between the pressure chamber or gas cylinder and the barrel bore instead.
  • the fixed connection with the barrel ensures that the gas cylinder moves according to the axial displacement of the barrel, so that the relative movement between recording or arranged on the recording sealing zone and the gas cylinder or the gas outlet opening mounted therein takes place.
  • connection between the connecting part and running friction and / or form-fitting ensures that the fitting and barrel are sealed against each other so that no gas leaks between the barrel and fitting.
  • a positive connection via a pin can additionally take place.
  • This pin can also be designed so that it fixes the connecting part and thus the gas cylinder in the desired circumferential position with respect to the barrel.
  • the receptacle is connected via a sleeve which surrounds the gas linkage and thus protects, firmly connected to a housing component. This is on the one hand shielded the gas linkage and on the other hand, the temperature of the barrel largely decoupled fixation of the recording possible.
  • an axially displaceable to the running axis support member may be additionally secured to the receptacle.
  • This support element prevents transverse forces acting on the receptacle are transmitted to the gas cylinder and possibly affect the displaceable arrangement between the gas cylinder and recording.
  • a further gas outlet opening may be provided in the gas cylinder in order to facilitate the vote of the gas take-off device to a specific weapon configuration.
  • this vote is particularly easy to perform by this further gas outlet opening is arranged in a removable insert. The vote is done simply by choosing a suitable insert with a correspondingly large gas outlet opening. It is also possible to make this vote, for example via a control valve according to claim 13.
  • Claims 14 and 15 relate to a barrel with a gas take-off device according to the invention or a weapon, in particular a machine gun, with such a barrel.
  • FIG. 1 the front part of a machine gun is shown with a barrel assembly 1 and a housing assembly 2, wherein barrel assembly 1 and housing assembly 2 are shown partially cut away. Housing assembly 2 and barrel assembly 1 are connected to each other via the gas take-off 3. Not shown are the subsequent to the rear part of the housing assembly trigger mechanism and other housing components with closure guide and shoulder rest.
  • a carrying handle 4 attached to the gas take-off 3 a sighting device 5 and at the mouth of the barrel 1, a muzzle fire brake 6.
  • the ammunition (not shown) is strapped and automatically fed via a corresponding mechanism (not shown) to the arranged in the rear end of the barrel 10 cartridge chamber and ignited there.
  • the ignited propellant catapulted the projectile from the cartridge case through the barrel bore 7, which runs concentrically to the so-called soul axis 8, forward out of the muzzle towards the target.
  • a part of the propellant gas passes through a tapping hole 9, which runs radially in the barrel 10 transversely to the bore hole 7 and via the co-axially adjoining the gas duct 11 and via the main channel 12 guided in the pressure chamber 14 formed by the gas cylinder 13.
  • a gas piston 15 which is connected to the gas linkage 16, or is formed thereon.
  • two rings 17 are formed with cylindrical outer surfaces for guiding and sealing, which lie with a corresponding fit on the cylindrical inner wall 18 of the gas cylinder 13 slidably.
  • the fit between the outer surfaces of the rings 17 and the cylindrical inner wall 18 is selected so that the gas piston 15 in the gas cylinder thirteenth displaceable but largely arranged gas-tight.
  • the surfaces sliding along one another are mechanically processed accordingly (turning, milling, grinding, hoisting) and, if necessary, treated surfaces (hardened, chrome-plated, coated, etc.) for increased durability.
  • the propellant gas which has entered the pressure chamber 14 builds a working pressure between the end face 19, 19 'of the gas piston 15 and the end face 20, 20' of the gas cylinder 13 or the pressure chamber 14, which moves the gas piston 15 and thus the throttle linkage 16 backwards, wherein the throttle linkage 16 transmits the pressure pulse to the weapon drive, which drives the shutter and loading mechanism.
  • the gas take-off 3 and the gas cylinder 13 formed integrally thereon are connected to the barrel 10 via a collar 21.
  • the sleeve 21 is shrunk to a corresponding outer shell portion 22 with appropriate fit.
  • the axial position on the barrel 10 is defined by a shoulder 23, against which the sleeve 21 rests with its rear end face.
  • the sleeve 21 and thus the gas take-off 3 are additionally set axially and circumferentially to run 10.
  • the gas cylinder 13 is held with its outer side in a sleeve-like cylindrical receptacle 25 axially displaceable.
  • the receptacle 25 is fixedly connected to the housing assembly 2 via the sleeve 26 surrounding the gas rod 16.
  • the receptacle 25 is supported via a guide fork 27 on the running jacket 10, wherein the guide fork 27 is formed so that axial relative movements between the barrel 10 and receptacle 25 are possible.
  • a sealing portion 28 is formed in the front region, which closely surrounds a corresponding portion on the outside of the gas cylinder 13, but so that relative movements (axial sliding movements) between the gas cylinder 13 and receptacle 25 are possible.
  • the first gas outlet opening 29 is formed through which a part of the propellant gas acting in the pressure chamber 14 exits. This gas outlet opening 29 is partially covered by formed on the inside of the receptacle 25 sealing portion 28.
  • This area is in 3 and 4 recognizable.
  • a protruding into the sealing portion 28 recess 30 is formed at the front edge of the receptacle 25, the front edge 31 extends over the gas outlet opening 29, ie the gas outlet opening 29 is partially covered by the sealing portion 28 in the region 30 of the recess.
  • the recess 30 acts with its front edge 31 as a running temperature-dependent throttle element, which covers the first gas outlet opening 29 according to the running temperature or exposing.
  • Fig. 3 shows the arrangement of the gas cylinder 13 with the partially covered first gas outlet opening 29 in cold running.
  • the gas outlet opening 29 is partially covered by the sealing portion 28 at the front edge 31 of the recess 30, so that the cross-sectional area of the first gas outlet opening 29 is reduced.
  • the pressure energy acts more or less completely in the pressure chamber 14 on the gas piston 15 and thus on the throttle linkage 16.
  • the gas outlet opening 29 moves relative to the front edge 31 of the recess 30 by the thermal expansion to the front.
  • This condition is in Fig. 4 shown.
  • the cross section of the gas outlet opening 29 is here largely exposed and the increased flow cross-section causes increased gas discharge and thus a pressure reduction in the pressure chamber 14, which compensates for the temperature-induced pressure increase in the bore 7.
  • This control mechanism stabilizes the weft cadence and the pressure pulses acting in the pressure chamber 14 and thus the ammunition consumption and the mechanical stress of the weapon mechanism.
  • a second gas outlet opening 32 is provided which extends axially to the main channel 12 and serves for the basic adjustment of the weft cadence and of the pressure acting in the pressure chamber 14 gas pressure.
  • This second gas outlet opening 32 is arranged in an insert 33, which is inserted via an external thread into a corresponding recess in the gas decrease 3 can be.
  • a peripheral sealing edge 34 is formed at the rear end of the insert, which engages with a screwed insert 33 at a corresponding paragraph 35 in the gas removal 3, so that when operating the weapon no gas between insert 33 and 3 gas removal can escape.
  • Between the sealing edge 34 and the second gas outlet opening 32 extends the end face 20 ', which closes together with the end face 20 at the gas decrease the pressure chamber 14 to the front.
  • the second gas outlet opening 32 is so large that the pressure in the pressure chamber 14 together with the first gas outlet opening 29, which is partially covered by the sealing portion 28 and the front edge 31 of the recess 30 is set in that the desired basic cadence (in the exemplary embodiment about 800 rounds per minute with a tolerance of +/- 50 to +/- 100 rounds per minute) is set.
  • running assemblies 1 can be tuned with the fixed thereto coupled gas take-off 3 on different housing assemblies 2 and different weapons.
  • Manufacturing and assembly tolerances, which cause the first gas outlet opening 29 is covered differently far from the sealing portion 28 of the receptacle 25 can be compensated by a corresponding insert 33 is selected with a correspondingly large second gas outlet opening 32.
  • Fig. 5 and Fig. 6 show embodiments in which the cadence is adjustable or adjustable in other ways, possibly in conjunction with the insert 33 described above.
  • the pressure chamber 14 by the gas cylinder 13 which is disposed within the receptacle 25, set.
  • the pressure chamber is defined by an external gas cylinder into which a receptacle arranged on the sleeve protrudes. In this shot, the gas piston moves. A front edge of the receptacle covers the first gas outlet opening inwardly relative to Run fixed gas cylinder according to the thermal expansion of the barrel 10 and sets this accordingly more or less free.
  • the first gas outlet opening 29 formed in the exemplary embodiment can also have other cross-sectional shapes (for example, rectangular or triangular) to improve the pressure control.
  • the choice of cross section allows either a linear, degressive or progressive enlargement or reduction of the variable flow cross section of the first gas outlet opening 29 with temperature-induced changes in length of the barrel 10. It is also possible to provide a plurality of first gas outlet openings 29 which are arranged axially offset and exposed one after the other or be covered.
  • the insert 33 with the second gas outlet opening 32 can also be replaced by an adjustable valve with which the flow cross section of the second gas outlet opening 32 can be adjusted in accordance with the desired basic cadence or the weapon configuration.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Toys (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
  • Sampling And Sample Adjustment (AREA)
  • Air Bags (AREA)

Claims (15)

  1. Dispositif de prise de gaz pour un canon (10), en particulier un canon de mitrailleuse, comprenant un cylindre à gaz (13) en liaison communicante avec un alésage de canon (7), pouvant être fixé par rapport à un composant de canon (1, 7, 10, 22, 23), ledit cylindre comprenant une première ouverture de sortie de gaz (29) coopérant avec un élément d'étranglement (25, 28, 30, 31 ; 25' , 28' , 31' ; 25", 28", 31"), caractérisé en ce que le cylindre à gaz (13), la première ouverture de sortie de gaz (29) et l'élément d'étranglement (25, 28, 30, 31 ; 25', 28', 31'; 25", 28", 31") sont conçus et disposés de sorte qu'une modification de la géométrie du canon (10) du fait de la température provoque un déplacement relatif entre le cylindre à gaz (13) et l'élément d'étranglement (25, 28, 30, 31 ; 25', 28', 31'; 25", 28", 31"), de sorte que l'élément d'étranglement (25, 28, 30, 31; 25', 28', 31'; 25", 28", 31") pouvant être fixé par rapport à un composant de boîtier (2, 26, 37) ferme plus ou moins la première ouverture de sortie de gaz (29) et régule la pression de gaz agissant à l'intérieur du cylindre à gaz (13) en fonction de la température du canon.
  2. Dispositif de prise de gaz selon la revendication 1, l'élément d'étranglement (25, 28, 30, 31; 25' , 28' , 31' ; 25", 28", 31") étant disposé à l'intérieur et/ou à l'extérieur sur le cylindre à gaz (13).
  3. Dispositif de prise de gaz selon l'une quelconque des revendications précédentes, dans lequel l'élément d'étranglement (25, 28, 30, 31; 25', 28', 30', 31'; 25", 28", 30", 31") est conçu sur un logement (25; 25"; 25") entourant au moins en partie le cylindre à gaz (13), et le cylindre à gaz (13) et le logement (25; 25'; 25") sont disposés de manière à pouvoir se déplacer axialement l'un par rapport à l'autre.
  4. Dispositif de prise de gaz selon la revendication 3, dans lequel l'élément d'étranglement (25, 28, 30, 31; 25', 28', 31'; 25", 28", 31") comporte une section d'étanchéité (28; 28', 28") conçue sur le logement (25; 25'; 25") et, lors d'un déplacement axial correspondant à la variation de température du canon entre le cylindre à gaz (13) et le logement (25; 25'; 25"), diminue et/ou augmente la première ouverture de sortie de gaz (29) installée en particulier radialement dans le cylindre à gaz (13).
  5. Dispositif de prise de gaz selon la revendication 3 ou 4, dans lequel le logement (25'; 25") est conçu de manière réglable par rapport au cylindre à gaz (13), de sorte que l'élément d'étranglement (25', 28', 31'; 25", 28", 31") ferme plus ou moins la première ouverture de sortie de gaz (29) en fonction du réglage.
  6. Dispositif de prise de gaz selon la revendication 5, dans lequel le réglage du logement (25' ; 25") provoque une modification largement axiale de la position de l'élément d'étranglement (25', 28', 31' ; 25", 28", 31") par rapport à la première ouverture de sortie de gaz (29).
  7. Dispositif de prise de gaz selon l'une quelconque des revendications précédentes, dans lequel le cylindre à gaz (13) peut être couplé fixement par une partie de raccordement (21) reliée notamment d'un seul tenant audit cylindre au canon (10) et entoure une chambre à gaz (14) reliée par un canal de gaz (11, 12) et un alésage de prise (9) dans le canon (10) à l'alésage de canon (7).
  8. Dispositif de prise de gaz selon la revendication 7, dans lequel la liaison entre la partie de raccordement (21) et le canon (10) s'effectue par adhérence et/ou par complémentarité de forme, la liaison à adhérence s'effectuant notamment par ajustage serré et la liaison à complémentarité de forme s'effectuant notamment par un goupillage (24).
  9. Dispositif de prise de gaz selon l'une quelconque des revendications précédentes, dans lequel le logement (25 ; 25'; 25") est fixé par un manchon (26) entourant une tringlerie de commande de gaz (16) sur un sous-ensemble de boîtier (2).
  10. Dispositif de prise de gaz selon l'une quelconque des revendications 3 à 9, dans lequel le logement (25) et/ou le sous-ensemble de boîtier (37) s'appuie sur un élément d'appui (27) et transversalement à l'axe de l'âme (8) de manière à pouvoir se déplacer axialement sur le canon.
  11. Dispositif de prise de gaz selon l'une quelconque des revendications précédentes, dans lequel le cylindre à gaz (13) comprend une seconde ouverture de sortie de gaz (32) dont la section transversale d'écoulement peut être adaptée à une configuration d'arme.
  12. Dispositif de prise de gaz selon la revendication 11, dans lequel la seconde ouverture de sortie de gaz (32) est disposée dans un insert (33) amovible pouvant être inséré dans le cylindre à gaz (13).
  13. Dispositif de prise de gaz selon la revendication 11 ou 12, dans lequel la section transversale d'écoulement de la seconde ouverture de sortie de gaz (32) peut être réglée par une soupape de régulation.
  14. Canon (10) comprenant un dispositif de prise de gaz selon l'une quelconque des revendications précédentes.
  15. Arme, en particulier mitraillette, comprenant un canon (10) selon la revendication 14.
EP06829529A 2005-12-23 2006-12-12 Dispositif de prise de gaz, et canon ou arme presentant un tel dispositif de prise de gaz Not-in-force EP1963772B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005062758A DE102005062758B3 (de) 2005-12-23 2005-12-23 Gasabnahmeanordnung und Lauf bzw. Waffe mit einer Gasabnahmeanordnung
PCT/EP2006/011947 WO2007079879A1 (fr) 2005-12-23 2006-12-12 Dispositif de prise de gaz, et canon ou arme presentant un tel dispositif de prise de gaz

Publications (2)

Publication Number Publication Date
EP1963772A1 EP1963772A1 (fr) 2008-09-03
EP1963772B1 true EP1963772B1 (fr) 2009-12-02

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP06829529A Not-in-force EP1963772B1 (fr) 2005-12-23 2006-12-12 Dispositif de prise de gaz, et canon ou arme presentant un tel dispositif de prise de gaz

Country Status (11)

Country Link
US (1) US7621210B2 (fr)
EP (1) EP1963772B1 (fr)
KR (1) KR101163815B1 (fr)
AT (1) ATE450769T1 (fr)
AU (1) AU2006334788B2 (fr)
CA (1) CA2632150C (fr)
DE (2) DE102005062758B3 (fr)
DK (1) DK1963772T3 (fr)
ES (1) ES2336031T3 (fr)
WO (1) WO2007079879A1 (fr)
ZA (1) ZA200805325B (fr)

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Also Published As

Publication number Publication date
KR20080086464A (ko) 2008-09-25
CA2632150C (fr) 2011-02-22
EP1963772A1 (fr) 2008-09-03
ES2336031T3 (es) 2010-04-07
KR101163815B1 (ko) 2012-07-09
ATE450769T1 (de) 2009-12-15
US7621210B2 (en) 2009-11-24
WO2007079879A1 (fr) 2007-07-19
DE502006005553D1 (de) 2010-01-14
AU2006334788B2 (en) 2011-02-24
ZA200805325B (en) 2009-03-25
DK1963772T3 (da) 2010-01-11
DE102005062758B3 (de) 2007-06-21
AU2006334788A1 (en) 2007-07-19
US20080307954A1 (en) 2008-12-18
CA2632150A1 (fr) 2007-07-19

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