EP3933337B1 - Mounting device for releasably attaching a shaft to a system box of a firearm - Google Patents

Mounting device for releasably attaching a shaft to a system box of a firearm Download PDF

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Publication number
EP3933337B1
EP3933337B1 EP21179058.9A EP21179058A EP3933337B1 EP 3933337 B1 EP3933337 B1 EP 3933337B1 EP 21179058 A EP21179058 A EP 21179058A EP 3933337 B1 EP3933337 B1 EP 3933337B1
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EP
European Patent Office
Prior art keywords
coupling rod
firearm
coupling
stock
receiver
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EP21179058.9A
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German (de)
French (fr)
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EP3933337C0 (en
EP3933337A1 (en
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Andreas Jakele
Meinrad Zeh
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Individual
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    • 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
    • F41A11/00—Assembly or disassembly features; Modular concepts; Articulated or collapsible guns
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41C—SMALLARMS, e.g. PISTOLS, RIFLES; ACCESSORIES THEREFOR
    • F41C23/00—Butts; Butt plates; Stocks
    • F41C23/16—Forestocks; Handgrips; Hand guards
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41C—SMALLARMS, e.g. PISTOLS, RIFLES; ACCESSORIES THEREFOR
    • F41C23/00—Butts; Butt plates; Stocks
    • F41C23/20—Butts; Butt plates; Mountings therefor

Definitions

  • the present invention relates to a device for releasably fastening a stock, in particular a buttstock, to the so-called system box of a firearm.
  • Firearms or handguns in particular repeating rifles or repeating shotguns for hunting purposes, usually have a barrel, a stock in the form of a buttstock and/or fore-end, and a receiver located in or between them, on or to which the barrel is attached. All the essential elements for firing a shot are housed in or on the receiver, in particular a locking system, a trigger assembly and - depending on the design of the weapon and if required - a magazine.
  • the publication EP 1 574 806 A1 discloses a rifle with a barrel, a stock and a system box arranged between the barrel and the stock. At the front end of the system box in the direction of the barrel, a latch is provided which can be moved parallel to the direction of the barrel to lock and release the connection between the stock and the system box.
  • a particular disadvantage of the known solutions is the requirement for a bore to run through the shaft in the longitudinal direction to accommodate the shaft screw or the piston rod. What is needed is a solid mechanical connection between the shaft and the system box, in which only one end section of the shaft directly adjacent to the system box needs to be designed for the fastening assembly and the rest of the shaft is independent of this.
  • the mounting device has an anchoring element attached to the stock or system box and a coupling rod that is movably or firmly anchored to this anchoring element and can be firmly coupled to the system box or stock.
  • the coupling rod that extends axially between the system box and stock is locked by a clamping element that can be actuated radially, i.e. transversely to the direction of travel.
  • the entire mounting device can thus be accommodated in an immediate border area between the system box and stock.
  • the rest of the stock area can be freely designed, which - with unrestricted high connection stability - means in particular material and cost savings but also results in a simplified design of the stock.
  • the coupling rod has an oblique or curved coupling surface on its first end section protruding from the anchoring element, which is pressed by the clamping element against a counterpart attached to the system box or shaft in order to lock the mounting device.
  • the counterpart has a pressure surface shaped opposite to this coupling surface.
  • the coupling surface can be trough-shaped, for example, and the pressure surface can be the cylinder surface of a substantially cylindrical fastening pin.
  • the coupling surface should preferably be shaped such that it is at least partially complementary to the pressure surface of the counterpart.
  • the coupling rod preferably has a straight surface that can apply pressure to the clamping element without slipping when tightening the assembly device.
  • the fastening solution of the present invention is characterized in particular by the fact that all fastening elements are only accommodated in an end section of the shaft that is directly adjacent to the system box. This means that, for example, weather-related changes in the length of a shaft made of wood have virtually no effect on the reliability and strength of the fastening.
  • the axial strength of the shaft on the system box is largely decoupled from the strength of the radial fastening of the clamping element, i.e. neither the security of the connection is jeopardized if the clamping element is tightened too weakly, nor can the adjacent side surfaces of the shaft and the system box be damaged if the clamping element is tightened too strongly.
  • the anchoring element preferably has a screw element arranged in the direction of travel and a clamping nut that is rotatably attached to this screw element.
  • the clamping nut has a through hole for the coupling rod on its front wall, so that a first end section of the coupling rod protrudes from the anchoring element and a second end section of the coupling rod is arranged between the front wall of the clamping nut and the screw element.
  • the front wall of the clamping nut preferably has a conical or spherical segment-shaped tapered inner surface which is complementary to a conical or spherical segment-shaped narrowing outer diameter at the second end section of the coupling rod.
  • the coupling rod is anchored axially within the anchoring element, but remains freely rotatable within a cone corresponding to the cone angle of the conical surfaces or the curvature of the spherical segment. The outer surface of the cone is swept over when the two oppositely shaped contact surfaces of the front wall and the second end section are moved against each other in a sliding manner.
  • This free mobility is particularly advantageous for coupling the coupling rod to the counterpart when the clamping element is still open.
  • This free mobility can also be omitted, however, and the coupling rod can also be firmly anchored radially in the anchoring element. This is particularly the case if radial displacement between the shaft and the system box is possible in another way during assembly.
  • the freedom of movement of the coupling rod is preferably further restricted by providing a first anti-twisting device between the screw element of the anchoring element and the coupling rod, which ensures that the coupling rod can only pivot about an axis transverse to the direction of travel.
  • the anti-twisting device is preferably achieved by providing a radial slot on an end wall of the screw element, into which a disk-shaped projection formed on the second end section of the coupling rod engages. This ensures that the coupling rod is always oriented in a certain rotational position relative to the screw element, namely in the rotational position in which the coupling surface on the first end section faces the counterpart.
  • a second anti-twisting device can also ensure that the screw element always remains in the rotational position that matches the disk-shaped projection. This is preferably achieved by providing a rubber ring between the screw element and the bushing attached to the shaft or system box.
  • the solution according to the invention is particularly practical and simple when the clamping element is a grub screw that can be operated in the radial direction. This can be operated using a suitable wrench, preferably one that can be stored in the firearm, so that the mounting device can be locked and released by the user on site.
  • the buttstock, but preferably also the fore-end can be replaced quickly using a single tool.
  • other clamping elements are also possible, in particular a clamping element designed as a bayonet lock.
  • the direction of the barrel of the firearm is referred to as the axial direction and the directions perpendicular to it are referred to as the radial directions.
  • the radial directions “up”, “down”, “left” and “right” are understood to refer to a shooter who is looking in the direction of the barrel and holding the firearm in its normal position of use.
  • FIGS. 1 and 2 each show a firearm 10 in longitudinal section along the barrel of the firearm 10 (not shown in detail).
  • a so-called system box 30 contains all the technical components required to fire the shot and is connected to the buttstock 20 in the partial area shown here by the mounting device 40 according to the invention.
  • a fore-end (not shown here) is also attached, which can be attached by a similarly designed mounting device.
  • the system box 30 and the buttstock 20 each have surfaces that are complementary to one another at their connecting area 25 and that are pressed against one another flatly and/or in a form-fitting manner when the assembly device 40 is closed.
  • the special feature of the assembly device 40 according to the invention is that it is possible to clamp the buttstock 20 in the axial direction against the system box 30 without the associated clamping element 48 having to be moved in the axial direction. Rather, the clamping element 48 is only actuated in the radial direction from above, so that neither the buttstock 20 nor the system box 30 need to have a connecting element that extends through it in the longitudinal direction.
  • the central element for this is the coupling rod 47, which protrudes axially from the buttstock 20 with its first end section 473 and, in the embodiment shown here, is anchored in the buttstock 20 with its second end section 471 by the anchoring device 41 in a radially movable manner.
  • the anchoring element 41 is arranged in the buttstock 20 and is coupled to a corresponding counterpart 49 on the system box 30.
  • the counterpart 49 could also be arranged in the buttstock 20 and the anchoring element 41 in the system box 30.
  • the buttstock 20 has an axial bore 21 on its interface facing the system box 30, into which a bushing 42 is firmly screwed and preferably also glued.
  • the bushing 42 has an internal thread into which the screw element 43 is firmly screwed with a first threaded part 43A up to the stop.
  • the second threaded part 43B protrudes from the bushing 42.
  • the threaded parts 43A, 43B have different diameters and in the transition area a (only in the Figure 4
  • the rubber ring 44 is then arranged between the second threaded part 43B and the bushing 42 and, due to its flexibility and friction, means that the rotational position of the screw element 43 can remain fixed in a certain position.
  • the bushing 42 can also be omitted and the axial bore 21 itself can have an internal thread corresponding to the bushing 42.
  • a clamping nut 46 is also accommodated, which is screwed onto the second threaded part 43B of the screw element 43.
  • the clamping nut 46 lies completely within the axial bore 21 of the buttstock 20 and between its rear end 468 (see Figures 3 and 4 ) and the bushing 42 there is a certain amount of free space 22.
  • the connecting region 25 does not form a straight plane as in the example shown, but takes a curved course or forms a hollow inside, the clamping nut 46 can also protrude from the axial bore 21 without any problem.
  • the clamping nut 46 has an end wall 460 with a through hole 461 for the coupling rod 47 on its side facing the system box 30.
  • the coupling rod 47 projects through the through hole 461 with its first end section 473, but is held back by the clamping nut 46 at its second end section 471.
  • the inner surface 462 of the end wall 460 is shaped such that it tapers towards the front in the radial direction.
  • the taper can in particular be conical or have the shape of a spherical segment surface.
  • the second end section 471 of the coupling rod 47 has a surface 472 with an outer diameter that narrows towards the front in a complementary manner to this taper.
  • the coupling rod 47 remains anchored axially within the anchoring element 41, but can be moved freely radially within a conical region which is predetermined by the cone angles of the corresponding conical surfaces on the inner surface 462 of the end wall 460 and the outer surface 472 of the end section 471 or the associated angles of the spherical section surfaces.
  • a projection 476 is formed on the second end section 471 of the coupling rod 47 on its end wall 470.
  • the projection 476 is disk-shaped in the embodiment shown. It engages in a correspondingly shaped slot 436 on the end wall 460 of the screw element 43.
  • the engagement of the projection 472 and the slot 436 reduces the mobility the coupling rod 47 to a movement up and down as it is caused by the and different positions of the coupling rod 47 in the Figures 1 and 2 is illustrated.
  • a spiral spring 45 inserted into a blind hole 431 in the middle of the slot 436 ensures in the embodiment shown that the coupling rod 47 is pre-tensioned against the screw element 43.
  • the two complementary surfaces 462, 472 on the clamping nut 46 and the coupling rod 47 are pressed against each other by the spring force and remain in constant sliding contact, which makes assembly considerably easier.
  • the spring 45 can also be replaced by a different type of pre-tensioning element or omitted entirely.
  • the coupling rod 47 is deflected upwards to the maximum and the clamping element in the form of the grub screw 48 is in its uppermost screw position.
  • the coupling rod 47 can thus be pushed so far into the system box 30 that a nose-shaped part 477 of the first end section 473 comes to lie behind the cylindrical cross pin 49.
  • the grub screw 48 in the threaded hole 31 is now screwed downwards into the position which is in Figure 2 As shown, it presses against the surface 475 of the coupling rod 47 from above and allows the coupling surface 474 to slide along the cylinder surface of the cross pin 49. Due to the curvature of these surfaces, the shaft 20 is thereby pulled towards the system box 30 until their boundary surfaces 25 are pressed firmly and flat against one another. This creates an absolutely firm anchoring of the shaft 20 to the system box 30, which can be released again at any time if necessary by unscrewing the grub screw 48.
  • the coupling surface 474 can also be designed, for example, as a straight inclined surface or as a simply curved surface. The only important thing is that the coupling surface 474 changes in its radial dimension towards the counterpart 49 and thus enables a flat contact with an oppositely shaped pressure surface of the counterpart 49.
  • the present invention relates to a mounting device 40 with an anchoring element fixedly mounted on the shaft 20 of a firearm 10 41, from which a coupling rod 47 protrudes, which is movably or firmly anchored therein.
  • the coupling rod 47 engages with its first end section 473 behind a counterpart fastened to the system box 30.
  • the shaft 20 can be clamped flat against the system box 30 in the axial direction by actuating the clamping element 48 in the radial direction from above, without the need for a connecting element on the shaft 20 which extends through it in the longitudinal direction.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Clamps And Clips (AREA)

Description

Die vorliegende Erfindung betrifft eine Vorrichtung zum lösbaren Befestigen eines Schafts, insbesondere eines Hinterschafts, am sogenannten Systemkasten einer Schusswaffe.The present invention relates to a device for releasably fastening a stock, in particular a buttstock, to the so-called system box of a firearm.

Schusswaffen bzw. Handfeuerwaffen, insbesondere Repetierbüchsen oder Repetierflinten für Jagdzwecke, haben gewöhnlich einen Lauf, einen Schaft in Form eines Hinter- und/oder Vorderschafts sowie einen darin oder dazwischen festgelegten Systemkasten, auf oder an dem der Lauf befestigt ist. In bzw. auf dem Systemkasten sind alle für das Auslösen eines Schusses wesentlichen Elemente untergebracht, insbesondere ein Verschlusssystem, eine Abzugsbaugruppe sowie - je nach Bauart der Waffe und bei Bedarf - ein Magazin.Firearms or handguns, in particular repeating rifles or repeating shotguns for hunting purposes, usually have a barrel, a stock in the form of a buttstock and/or fore-end, and a receiver located in or between them, on or to which the barrel is attached. All the essential elements for firing a shot are housed in or on the receiver, in particular a locking system, a trigger assembly and - depending on the design of the weapon and if required - a magazine.

Um eine solche Schusswaffe, die bauartbedingt eine gewisse Länge aufweist, komfortabler und unauffälliger transportieren zu können, aber auch um unter Schäften verschiedener Formen und Materialien wählen zu können, hat man verschiedene Lösungen entwickelt, den Schaft abnehmbar am Systemkasten zu montieren.In order to be able to transport such a firearm, which has a certain length due to its design, more comfortably and inconspicuously, but also to be able to choose between stocks of different shapes and materials, various solutions have been developed to mount the stock detachably on the system box.

Die Druckschrift EP 1 574 806 A1 offenbart ein Gewehr mit einem Lauf, einem Schaft und einem zwischen dem Lauf und dem Schaft angeordneten Systemkasten. Am in Laufrichtung vorderen Ende des Systemkastens ist ein parallel zur Laufrichtung bewegbarer Riegel zum Feststellen und Lösen der Verbindung zwischen Schaft und Systemkasten vorgesehen.The publication EP 1 574 806 A1 discloses a rifle with a barrel, a stock and a system box arranged between the barrel and the stock. At the front end of the system box in the direction of the barrel, a latch is provided which can be moved parallel to the direction of the barrel to lock and release the connection between the stock and the system box.

Stark verbreitet ist insbesondere bei Handfeuerwaffen, deren Holz- oder Kunststoffschaft in Vorder- und Hinterschaft quergeteilt ist, die Befestigung mittels einer Schaftschraube in Längsrichtung also parallel zum Lauf der Schusswaffe. In der Druckschrift DE 10 2017 102 005 A1 durchsetzt die Schaftschraube den Hinterschaft in Längsrichtung und lässt sich durch ein in der Schaftkappe verankertes Betätigungselement drehen.Particularly in handguns with wooden or plastic stocks that are divided into a fore- and rear-end, the fastening by means of a shaft screw in the longitudinal direction, i.e. parallel to the barrel of the firearm, is very common. In the publication EN 10 2017 102 005 A1 The stock screw passes through the buttstock lengthwise and can be rotated by an actuating element anchored in the butt cap.

In der Druckschrift EP 1 335 174 A1 wird der Vorderschaft zusammen mit dem Lauf lösbar am Systemkasten fixiert. Zum Herstellen und Lösen der Verriegelung wird eine den Vorderschaft in Längs- bzw. Laufrichtung durchsetzende Kolbenstange axial betätigt.In the print EP 1 335 174 A1 The forearm is releasably fixed to the system box together with the barrel. To establish and release the locking, a piston rod that passes through the forearm in the longitudinal or barrel direction is actuated axially.

Weitere herkömmliche Schafthalterungen sind in DE 85 07 509 U1 und US 2010/132240 A1 beschrieben.Other conventional shaft mounts are available in DE 85 07 509 U1 and US 2010/132240 A1 described.

Nachteilig an den bekannten Lösungen ist insbesondere das Erfordernis einer den Schaft in Längsrichtung durchsetzenden Bohrung zur Aufnahme der Schaftschraube oder der Kolbenstange. Gesucht wird daher nach einer soliden mechanische Verbindung zwischen Schaft und Systemkasten, bei der nur ein direkt an den Systemkasten angrenzender Endabschnitt des Schafts für die Befestigungsmontage ausgelegt sein muss und der übrige Teil des Schafts davon unabhängig ist.A particular disadvantage of the known solutions is the requirement for a bore to run through the shaft in the longitudinal direction to accommodate the shaft screw or the piston rod. What is needed is a solid mechanical connection between the shaft and the system box, in which only one end section of the shaft directly adjacent to the system box needs to be designed for the fastening assembly and the rest of the shaft is independent of this.

Die Lösung dieser Aufgabe gelingt durch die in Anspruch 1 definierte Schusswaffe. Danach weist die Montagevorrichtung ein am Schaft oder Systemkasten befestigtes Verankerungselement und eine an diesem Verankerungselement beweglich oder fest verankerte Kuppelstange auf, die sich an dem Systemkasten beziehungsweise Schaft festkoppeln lässt. Anders als bei den herkömmlichen Befestigungslösungen mit axial, also in Laufrichtung, betätigbarer Schaftschraube wird die sich axial zwischen Systemkasten und Schaft erstreckende Kuppelstange durch ein radial, also quer zur Laufrichtung, betätigbares Spannelement arretiert. So kann die gesamte Montagevorrichtung in einem unmittelbaren Grenzbereich zwischen Systemkasten und Schaft untergebracht sein. Der übrige Schaftbereich bleibt frei gestaltbar, was - bei uneingeschränkt hoher Verbindungsstabilität - insbesondere eine Material- und Kostenersparnis bedeutet aber auch eine vereinfachte Konstruktion des Schafts mit sich bringt.This problem is solved by the firearm defined in claim 1. According to this, the mounting device has an anchoring element attached to the stock or system box and a coupling rod that is movably or firmly anchored to this anchoring element and can be firmly coupled to the system box or stock. Unlike conventional fastening solutions with a shaft screw that can be actuated axially, i.e. in the direction of travel, the coupling rod that extends axially between the system box and stock is locked by a clamping element that can be actuated radially, i.e. transversely to the direction of travel. The entire mounting device can thus be accommodated in an immediate border area between the system box and stock. The rest of the stock area can be freely designed, which - with unrestricted high connection stability - means in particular material and cost savings but also results in a simplified design of the stock.

Besonders bevorzugte Ausführungsbeispiele einer Schusswaffe mit der erfindungsgemäßen Montagevorrichtung sind in den Unteransprüchen angegeben.Particularly preferred embodiments of a firearm with the mounting device according to the invention are specified in the subclaims.

Erfindungsgemäß hat die Kuppelstange an ihrem ersten, aus dem Verankerungselement hervorstehenden Endabschnitt eine schräge oder gekrümmte Kopplungsfläche, die zur Arretierung der Montagevorrichtung von dem Spannelement gegen ein am Systemkasten beziehungsweise Schaft angebrachtes Gegenstück gepresst wird. Das Gegenstück weist eine entgegengesetzt zu dieser Kopplungsfläche geformte Andruckfläche auf. Die Kopplungsfläche kann beispielsweise muldenförmig sein, und die Andruckfläche kann die Zylindermantelfläche eines im Wesentlichen zylindrischen Befestigungsstifts sein. In jedem Fall sollte die Kopplungsfläche vorzugsweise so geformt sein, dass sie zumindest teilweise komplementär zur Andruckfläche des Gegenstücks ist. Auf diese Weise führt ein radialer Druck auf die Kuppelstange durch das Spannelement dazu, dass die Kopplungsfläche sich längs der Andruckfläche bewegt und dadurch Schaft und Systemkasten in axialer Richtung zusammenzieht bis deren zugewandte Seiten flächig und passgenau gegeneinander gepresst sind. So entsteht eine absolut feste Verbindung zwischen Schaft und Systemkasten, die bei Bedarf durch Lockerung des Spannelements jederzeit wieder gelöst werden kann. Am zur Kopplungsfläche radial entgegengesetzten Ende weist die Kuppelstange vorzugsweise eine gerade Fläche auf, die das Spannelement beim Festziehen der Montagevorrichtung verrutschsicher mit Druck beaufschlagen kann.According to the invention, the coupling rod has an oblique or curved coupling surface on its first end section protruding from the anchoring element, which is pressed by the clamping element against a counterpart attached to the system box or shaft in order to lock the mounting device. The counterpart has a pressure surface shaped opposite to this coupling surface. The coupling surface can be trough-shaped, for example, and the pressure surface can be the cylinder surface of a substantially cylindrical fastening pin. In any case, the coupling surface should preferably be shaped such that it is at least partially complementary to the pressure surface of the counterpart. In this way, a radial pressure on the coupling rod leads to The clamping element causes the coupling surface to move along the pressure surface and thereby pulls the shaft and system box together in an axial direction until their facing sides are pressed flat and precisely against each other. This creates an absolutely firm connection between the shaft and system box, which can be released again at any time if necessary by loosening the clamping element. At the end radially opposite to the coupling surface, the coupling rod preferably has a straight surface that can apply pressure to the clamping element without slipping when tightening the assembly device.

Die Befestigungslösung der vorliegenden Erfindung zeichnet sich insbesondere dadurch aus, dass alle Befestigungselemente nur in einem unmittelbar an den Systemkasten angrenzenden Endabschnitt des Schafts untergebracht sind. Dadurch wirken sich zum Beispiel witterungsbedingte Längenänderungen eines aus Holz gefertigten Schafts so gut wie gar nicht auf die Zuverlässigkeit und Festigkeit der Befestigung aus. Zudem ist die axiale Festigkeit des Schafts an dem Systemkasten von der Stärke der radialen Befestigung des Spannelements weitgehend entkoppelt, d.h. weder gefährdet ein zu schwaches Anziehen des Spannelements die Verbindungssicherheit noch können die aneinander anliegende Seitenflächen des Schafts und des Systemkastens bei zu starkem Anziehen des Spannelements beschädigt werden.The fastening solution of the present invention is characterized in particular by the fact that all fastening elements are only accommodated in an end section of the shaft that is directly adjacent to the system box. This means that, for example, weather-related changes in the length of a shaft made of wood have virtually no effect on the reliability and strength of the fastening. In addition, the axial strength of the shaft on the system box is largely decoupled from the strength of the radial fastening of the clamping element, i.e. neither the security of the connection is jeopardized if the clamping element is tightened too weakly, nor can the adjacent side surfaces of the shaft and the system box be damaged if the clamping element is tightened too strongly.

Um Materialveränderungen oder Fertigungstoleranzen dennoch gut ausgleichen zu können weist das Verankerungselement vorzugsweise ein in Laufrichtung angeordnetes Schraubelement und eine an diesem Schraubelement verdrehbar befestigte Spannmutter auf. Die Spannmutter hat an ihrer Stirnwand ein Durchgangsloch für die Kuppelstange, so dass ein erster Endabschnitt der Kuppelstange aus dem Verankerungselement hervorsteht und ein zweiter Endabschnitt der Kuppelstange zwischen der Stirnwand der Spannmutter und dem Schraubelement angeordnet ist. Dies ist insbesondere dann von Vorteil, wenn der Schaft aus Holz und daher stärkeren Materialveränderungen ausgesetzt ist als beispielsweise ein Kunststoffschaft.In order to be able to compensate for material changes or manufacturing tolerances, the anchoring element preferably has a screw element arranged in the direction of travel and a clamping nut that is rotatably attached to this screw element. The clamping nut has a through hole for the coupling rod on its front wall, so that a first end section of the coupling rod protrudes from the anchoring element and a second end section of the coupling rod is arranged between the front wall of the clamping nut and the screw element. This is particularly advantageous if the shaft is made of wood and is therefore subject to greater material changes than, for example, a plastic shaft.

Um den Schaft ohne radiale Verschiebung montieren zu können, hat die Stirnwand der Spannmutter vorzugsweise eine sich konisch oder kugelabschnittsförmig verjüngende Innenfläche, die komplementär zu einem sich konisch oder kugelabschnittsförmig verengenden Außendurchmesser am zweiten Endabschnitt der Kuppelstange ausgebildet ist. Dadurch ist die Kuppelstange innerhalb des Verankerungselements axial verankert, bleibt jedoch innerhalb eines dem Konuswinkel der konischen Flächen bzw. der Krümmung des Kugelabschnitts entsprechenden Kegels frei rotierbar. Die Mantelfäche des Kegels wird dabei überstrichen, wenn die beiden entgegengesetzt geformten Anlageflächen der Stirnwand und des zweiten Endabschnitts gleitend gegeneinander bewegt werden. Diese freie Bewegbarkeit ist besonders günstig für das Ankuppeln der Kuppelstange an dem Gegenstück bei noch geöffnetem Spannelement. Diese freie Bewegbarkeit kann aber auch entfallen und die Kuppelstange auch radial fest in dem Verankerungselement verankert sein. Insbesondere dann, wenn während der Montage auf andere Weise eine radiale Verschiebbarkeit zwischen Schaft und Systemkasten gegeben ist.In order to be able to mount the shaft without radial displacement, the front wall of the clamping nut preferably has a conical or spherical segment-shaped tapered inner surface which is complementary to a conical or spherical segment-shaped narrowing outer diameter at the second end section of the coupling rod. This means that the coupling rod is anchored axially within the anchoring element, but remains freely rotatable within a cone corresponding to the cone angle of the conical surfaces or the curvature of the spherical segment. The outer surface of the cone is swept over when the two oppositely shaped contact surfaces of the front wall and the second end section are moved against each other in a sliding manner. This free mobility is particularly advantageous for coupling the coupling rod to the counterpart when the clamping element is still open. This free mobility can also be omitted, however, and the coupling rod can also be firmly anchored radially in the anchoring element. This is particularly the case if radial displacement between the shaft and the system box is possible in another way during assembly.

Die Bewegungsfreiheit der Kuppelstange wird vorzugsweise dadurch weiter eingeschränkt, dass eine erste Verdrehsicherung zwischen dem Schraubelement des Verankerungselements und der Kuppelstange vorgesehen wird, die dafür sorgt, dass die Kuppelstange nur noch um eine Achse quer zur Laufrichtung schwenkbar ist. Die Verdrehsicherung wird vorzugsweise dadurch erreicht, dass an einer Stirnwand des Schraubelements ein radialer Schlitz vorgesehen ist, in den ein am zweiten Endabschnitt der Kuppelstange angeformter scheibenförmiger Vorsprung eingreift. Dadurch wird dafür gesorgt, dass die Kuppelstange immer in einer bestimmten Drehposition gegenüber dem Schraubelement orientiert ist, nämlich in der Drehposition, in der die Kopplungsfläche an dem ersten Endabschnitt dem Gegenstück zugewandt ist.The freedom of movement of the coupling rod is preferably further restricted by providing a first anti-twisting device between the screw element of the anchoring element and the coupling rod, which ensures that the coupling rod can only pivot about an axis transverse to the direction of travel. The anti-twisting device is preferably achieved by providing a radial slot on an end wall of the screw element, into which a disk-shaped projection formed on the second end section of the coupling rod engages. This ensures that the coupling rod is always oriented in a certain rotational position relative to the screw element, namely in the rotational position in which the coupling surface on the first end section faces the counterpart.

Eine zweite Verdrehsicherung kann ferner dafür sorgen, dass das Schraubelement immer in der zum scheibenförmigen Vorsprung passenden Drehposition positioniert bleibt. Das gelingt vorzugsweise dadurch, dass zwischen dem Schraubelement und der im Schaft beziehungsweise Systemkasten befestigten Buchse ein Gummiring vorgesehen ist.A second anti-twisting device can also ensure that the screw element always remains in the rotational position that matches the disk-shaped projection. This is preferably achieved by providing a rubber ring between the screw element and the bushing attached to the shaft or system box.

Besonders praktikabel und einfach ist die erfindungsgemäße Lösung dann, wenn das Spannenelement eine in Radialrichtung betätigbare Madenschraube ist. Diese lässt sich durch einen entsprechenden, vorzugsweise in der Schusswaffe unterbringbaren Schraubschlüssel betätigen, so dass die Montagevorrichtung vom Benutzer selbst und vor Ort arretiert und gelöst werden kann. So kann insbesondere der Hinterschaft aber vorzugsweise auch der Vorderschaft mittels eines einzigen Werkzeugs kurzfristig ausgetauscht werden. Es sind aber auch andere Spannelemente möglich, insbesondere ein als Bajonettverschluss ausgebildetes Spannelement.The solution according to the invention is particularly practical and simple when the clamping element is a grub screw that can be operated in the radial direction. This can be operated using a suitable wrench, preferably one that can be stored in the firearm, so that the mounting device can be locked and released by the user on site. In particular, the buttstock, but preferably also the fore-end, can be replaced quickly using a single tool. However, other clamping elements are also possible, in particular a clamping element designed as a bayonet lock.

Allgemein wird in der vorliegenden Erfindungsbeschreibung die Laufrichtung der Schusswaffe als Axialrichtung bezeichnet und die quer dazu stehenden Richtungen als Radialrichtungen. Außerdem werden die radialen Richtungsangaben "oben", "unten", "links" und "rechts" bezogen auf einen Schützen verstanden, der in Laufrichtung blickt und die Schusswaffe in ihrer normalen Gebrauchsposition hält.In general, in the present description of the invention, the direction of the barrel of the firearm is referred to as the axial direction and the directions perpendicular to it are referred to as the radial directions. In addition, the radial directions "up", "down", "left" and "right" are understood to refer to a shooter who is looking in the direction of the barrel and holding the firearm in its normal position of use.

Im Folgenden soll die Erfindung anhand von Ausführungsbeispielen in Bezug auf die Zeichnungen näher erläutert werden. Darin zeigt:

  • Figur 1 einen Querschnitt durch eine erfindungsgemäße Schusswaffe mit der Montagevorrichtung in offener Stellung,
  • Figur 2 den Querschnitt gemäß Figur 1 mit der Montagevorrichtung in geschlossener Stellung,
  • Figur 3 eine perspektivische Ansicht der Montagevorrichtung in offener Stellung,
  • Figur 4 eine perspektivische Ansicht der Montagevorrichtung in geschlossener Stellung und
  • Figur 5 perspektivische Ansichten der in Gebrauch einander zugewandten Stirnwände der Kuppelstange und des Schraubelements.
In the following, the invention will be explained in more detail using exemplary embodiments with reference to the drawings. In this drawing:
  • Figure 1 a cross-section through a firearm according to the invention with the mounting device in the open position,
  • Figure 2 the cross section according to Figure 1 with the mounting device in the closed position,
  • Figure 3 a perspective view of the mounting device in open position,
  • Figure 4 a perspective view of the mounting device in closed position and
  • Figure 5 Perspective views of the end walls of the coupling rod and the screw element facing each other in use.

Die Figuren 1 und 2 zeigen jeweils eine Schusswaffe 10 im Längsschnitt entlang des nicht näher dargestellten Laufs der Schusswaffe 10. Ein sogenannter Systemkasten 30 enthält alle zum Auslösen des Schusses notwendigen technischen Bestandteile und ist in dem hier gezeigten Teilbereich durch die erfindungsgemäße Montagevorrichtung 40 an den Hinterschaft 20 angeschlossen. Am entgegengesetzt dazu angeordneten Vorderende des Systemkastens 30 ist ferner ein (hier nicht dargestellter) Vorderschaft angebracht, der durch eine ebenso gestaltete Montagevorrichtung befestigt sein kann.The Figures 1 and 2 each show a firearm 10 in longitudinal section along the barrel of the firearm 10 (not shown in detail). A so-called system box 30 contains all the technical components required to fire the shot and is connected to the buttstock 20 in the partial area shown here by the mounting device 40 according to the invention. At the front end of the system box 30 arranged opposite thereto, a fore-end (not shown here) is also attached, which can be attached by a similarly designed mounting device.

Der Systemkasten 30 und der Hinterschaft 20 weisen an ihrem Verbindungsbereich 25 jeweils komplementär zueinander geformte Flächen auf, die bei geschlossener Montagevorrichtung 40 flächig und/oder formschlüssig aneinander gepresst sind. Das besondere an der erfindungsgemäßen Montagevorrichtung 40 ist, dass es gelingt, den Hinterschaft 20 in Axialrichtung gegen den Systemkasten 30 zu verspannen, ohne dass das zugehörige Spannelement 48 in Axialrichtung bewegt werden muss. Vielmehr wird das Spannelement 48 nur in Radialrichtung von oben betätigt, so dass weder am Hinterschaft 20 noch am Systemkasten 30 ein diesen in Längsrichtung durchsetzendes Verbindungselement vorgesehen werden muss.The system box 30 and the buttstock 20 each have surfaces that are complementary to one another at their connecting area 25 and that are pressed against one another flatly and/or in a form-fitting manner when the assembly device 40 is closed. The special feature of the assembly device 40 according to the invention is that it is possible to clamp the buttstock 20 in the axial direction against the system box 30 without the associated clamping element 48 having to be moved in the axial direction. Rather, the clamping element 48 is only actuated in the radial direction from above, so that neither the buttstock 20 nor the system box 30 need to have a connecting element that extends through it in the longitudinal direction.

Zentrales Element dafür ist die Kuppelstange 47 die mit ihrem ersten Endabschnitt 473 axial aus dem Hinterschaft 20 hervorsteht und in dem hier gezeigten Ausführungsbeispiel mit ihrem zweiten Endabschnitt 471 durch die Verankerungsvorrichtung 41 radial bewegbar im Hinterschaft 20 verankert ist. Im Ausführungsbeispiel ist das Verankerungselement 41 im Hinterschaft 20 angeordnet und koppelt an ein entsprechendes Gegenstück 49 am Systemkasten 30 an. Ebenso ließe sich das Gegenstück 49 aber auch im Hinterschaft 20 anordnen und das Verankerungselement 41 entsprechend im Systemkasten 30.The central element for this is the coupling rod 47, which protrudes axially from the buttstock 20 with its first end section 473 and, in the embodiment shown here, is anchored in the buttstock 20 with its second end section 471 by the anchoring device 41 in a radially movable manner. In the embodiment, the anchoring element 41 is arranged in the buttstock 20 and is coupled to a corresponding counterpart 49 on the system box 30. The counterpart 49 could also be arranged in the buttstock 20 and the anchoring element 41 in the system box 30.

Der Hinterschaft 20 weist an seiner dem Systemkasten 30 zugewandten Grenzfläche eine Axialbohrung 21 auf, in die eine Buchse 42 fest verschraubt und vorzugsweise auch verklebt ist. Die Buchse 42 hat ein Innengewinde, in das das Schraubelement 43 mit einem ersten Gewindeteil 43A bis zum Anschlag fest eingeschraubt wird. Das zweite Gewindeteil 43B steht aus der Buchse 42 hervor. Die Gewindeteile 43A, 43B haben unterschiedliche Durchmesser und im Übergangsbereich kann am ersten Gewindeteil 43A ein (nur in der Figur 4 schematisch gezeigter) Gummiring 44 angeordnet werden. Der Gummiring 44 kommt dann zwischen dem zweiten Gewindeteil 43B und der Buchse 42 zu liegen und führt wegen seiner Flexibilität und Reibung dazu, dass die Verdrehposition des Schraubelements 43 in einer bestimmten Stellung fixiert bleiben kann. Anders als im gezeigten Ausführungsbeispiel kann die Buchse 42 auch entfallen und die Axialbohrung 21 selbst ein der Buchse 42 entsprechendes Innengewinde aufweisen.The buttstock 20 has an axial bore 21 on its interface facing the system box 30, into which a bushing 42 is firmly screwed and preferably also glued. The bushing 42 has an internal thread into which the screw element 43 is firmly screwed with a first threaded part 43A up to the stop. The second threaded part 43B protrudes from the bushing 42. The threaded parts 43A, 43B have different diameters and in the transition area a (only in the Figure 4 The rubber ring 44 is then arranged between the second threaded part 43B and the bushing 42 and, due to its flexibility and friction, means that the rotational position of the screw element 43 can remain fixed in a certain position. Unlike in the embodiment shown, the bushing 42 can also be omitted and the axial bore 21 itself can have an internal thread corresponding to the bushing 42.

In der Axialbohrung 21 des Hinterschafts 20 ist ferner eine Spannmutter 46 untergebracht, die auf dem zweiten Gewindeteil 43B des Schraubelements 43 aufgeschraubt ist. Die Spannmutter 46 liegt im gezeigten Ausführungsbeispiel vollständig innerhalb der Axialbohrung 21 des Hinterschafts 20 und zwischen ihrem Hinterende 468 (siehe Figuren 3 und 4) und der Buchse 42 besteht ein gewisser Freiraum 22. Dadurch bleibt die Spannmutter 46 axial nachstellbar, so dass beispielsweise ein Nachjustieren des Verankerungselements 41 jederzeit möglich ist, etwa bei einem Holzschwund des Hinterschafts 20. Bildet der Verbindungsbereich 25 nicht wie im dargestellten Beispiel eine gerade Ebene, sondern nimmt einen gekrümmten Verlauf ein bzw. bildet im Inneren eine Aushöhlung, so kann die Spannmutter 46 auch problemlos aus der Axialbohrung 21 hervorstehen.In the axial bore 21 of the buttstock 20, a clamping nut 46 is also accommodated, which is screwed onto the second threaded part 43B of the screw element 43. In the embodiment shown, the clamping nut 46 lies completely within the axial bore 21 of the buttstock 20 and between its rear end 468 (see Figures 3 and 4 ) and the bushing 42 there is a certain amount of free space 22. This allows the clamping nut 46 to be axially adjustable so that, for example, the anchoring element 41 can be readjusted at any time, for example in the event of wood shrinkage of the buttstock 20. If the connecting region 25 does not form a straight plane as in the example shown, but takes a curved course or forms a hollow inside, the clamping nut 46 can also protrude from the axial bore 21 without any problem.

Die Spannmutter 46 hat an ihrer dem Systemkasten 30 zugewandten Seite eine Stirnwand 460 mit einem Durchgangsloch 461 für die Kuppelstange 47. Die Kuppelstange 47 ragt mit ihrem ersten Endabschnitt 473 durch das Durchgangsloch 461, wird aber an ihrem zweiten Endabschnitt 471 von der Spannmutter 46 zurückgehalten. Dabei ist die Innenfläche 462 der Stirnwand 460 so geformt, dass sie sich nach vorne in Radialrichtung verjüngt. Die Verjüngung kann insbesondere konisch sein oder die Form einer Kugelabschnittsfläche haben. Der zweite Endabschnitt 471 der Kuppelstange 47 weist eine Fläche 472 mit einem sich nach vorne zu dieser Verjüngung komplementär verengenden Außendurchmesser auf. Dadurch bleibt die Kuppelstange 47 innerhalb des Verankerungselements 41 axial verankert, kann aber radial frei bewegt werden und zwar innerhalb eines kegelförmigen Bereichs, der durch die Konuswinkel der einander entsprechenden konischen Flächen an der Innenfläche 462 der Stirnwand 460 und der Außenfläche 472 des Endabschnitts 471 bzw. die zugehörigen Winkel der Kugelabschnittsflächen vorgegeben ist.The clamping nut 46 has an end wall 460 with a through hole 461 for the coupling rod 47 on its side facing the system box 30. The coupling rod 47 projects through the through hole 461 with its first end section 473, but is held back by the clamping nut 46 at its second end section 471. The inner surface 462 of the end wall 460 is shaped such that it tapers towards the front in the radial direction. The taper can in particular be conical or have the shape of a spherical segment surface. The second end section 471 of the coupling rod 47 has a surface 472 with an outer diameter that narrows towards the front in a complementary manner to this taper. As a result, the coupling rod 47 remains anchored axially within the anchoring element 41, but can be moved freely radially within a conical region which is predetermined by the cone angles of the corresponding conical surfaces on the inner surface 462 of the end wall 460 and the outer surface 472 of the end section 471 or the associated angles of the spherical section surfaces.

Wie am besten in der Figur 5 zu sehen ist, wird diese freie radiale Bewegbarkeit nun zusätzlich dadurch eingeschränkt, dass am zweiten Endabschnitt 471 der Kuppelstange 47 an deren Stirnwand 470 ein Vorsprung 476 angeformt ist. Der Vorsprung 476 ist im gezeigten Ausführungsbeispiel scheibenförmig. Er greift in einen entsprechend geformten Schlitz 436 an der Stirnwand 460 des Schraubelements 43 ein. Das Ineinandergreifen von Vorsprung 472 und Schlitz 436 reduziert die Bewegbarkeit der Kuppelstange 47 auf eine Bewegung nach oben und unten wie sie durch die und unterschiedlichen Positionen der Kuppelstange 47 in den Figuren 1 und 2 veranschaulicht ist.How best in the Figure 5 As can be seen, this free radial mobility is now additionally restricted by the fact that a projection 476 is formed on the second end section 471 of the coupling rod 47 on its end wall 470. The projection 476 is disk-shaped in the embodiment shown. It engages in a correspondingly shaped slot 436 on the end wall 460 of the screw element 43. The engagement of the projection 472 and the slot 436 reduces the mobility the coupling rod 47 to a movement up and down as it is caused by the and different positions of the coupling rod 47 in the Figures 1 and 2 is illustrated.

Eine in einem Sackloch 431 in der Mitte des Schlitzes 436 eingesteckte Spiralfeder 45 (siehe Figur 1) sorgt im gezeigten Ausführungsbeispiel noch dafür, dass die Kuppelstange 47 gegen das Schraubelement 43 vorgespannt ist. So werden die beiden zueinander komplementären Flächen 462, 472 an der Spannmutter 46 und der Kuppelstange 47 durch die Federkraft gegeneinander gedrückt und bleiben ständig in Gleitkontakt, was die Montage erheblich erleichtert. Die Feder 45 kann aber auch durch ein andersartiges Vorspannelement ersetzt werden oder ganz entfallen.A spiral spring 45 inserted into a blind hole 431 in the middle of the slot 436 (see Figure 1 ) ensures in the embodiment shown that the coupling rod 47 is pre-tensioned against the screw element 43. The two complementary surfaces 462, 472 on the clamping nut 46 and the coupling rod 47 are pressed against each other by the spring force and remain in constant sliding contact, which makes assembly considerably easier. The spring 45 can also be replaced by a different type of pre-tensioning element or omitted entirely.

In der Figur 1 ist die Kuppelstange 47 maximal nach oben ausgelenkt, und das Spannelement in Form der Madenschraube 48 ist in seiner obersten Schraubposition. So kann die Kuppelstange 47 so weit in den Systemkasten 30 geschoben werden, dass ein nasenförmiger Teil 477 des ersten Endabschnitts 473 hinter dem zylinderförmigen Querstift 49 zu liegen kommt. Wird nun die Madenschraube 48 in der Gewindebohrung 31 nach unten in die Position geschraubt, die in Figur 2 dargestellt ist, so drückt sie von oben gegen die Fläche 475 der der Kuppelstange 47 und lässt die Kopplungsfläche 474 entlang der Zylindermantelfläche des Querstifts 49 gleiten. Aufgrund der Krümmung dieser Flächen wird der Schaft 20 dadurch an den Systemkasten 30 herangezogen, bis deren Grenzflächen 25 fest und flächig aneinander gedrückt sind. So entsteht eine absolut feste Verankerung des Schafts 20 am Systemkasten 30, die durch Aufdrehen der Madenschraube 48 bei Bedarf jederzeit wieder gelöst werden kann.In the Figure 1 the coupling rod 47 is deflected upwards to the maximum and the clamping element in the form of the grub screw 48 is in its uppermost screw position. The coupling rod 47 can thus be pushed so far into the system box 30 that a nose-shaped part 477 of the first end section 473 comes to lie behind the cylindrical cross pin 49. If the grub screw 48 in the threaded hole 31 is now screwed downwards into the position which is in Figure 2 As shown, it presses against the surface 475 of the coupling rod 47 from above and allows the coupling surface 474 to slide along the cylinder surface of the cross pin 49. Due to the curvature of these surfaces, the shaft 20 is thereby pulled towards the system box 30 until their boundary surfaces 25 are pressed firmly and flat against one another. This creates an absolutely firm anchoring of the shaft 20 to the system box 30, which can be released again at any time if necessary by unscrewing the grub screw 48.

Statt der Muldenform im gezeigten Ausführungsbeispiel kann die Kopplungsfläche 474 beispielsweise auch nur als eine gerade Schrägfläche oder als eine einfach gekrümmte Fläche ausgebildet sein. Wichtig ist allein, dass die Kopplungsfläche 474 sich in ihrer radialen Abmessung hin zu dem Gegenstück 49 ändert und so ein flächiges Anliegen an einer entgegengesetzt geformten Andruckfläche des Gegenstücks 49 ermöglicht.Instead of the trough shape in the embodiment shown, the coupling surface 474 can also be designed, for example, as a straight inclined surface or as a simply curved surface. The only important thing is that the coupling surface 474 changes in its radial dimension towards the counterpart 49 and thus enables a flat contact with an oppositely shaped pressure surface of the counterpart 49.

Zusammenfassend betrifft die vorliegende Erfindung eine Montagevorrichtung 40 mit einem am Schaft 20 einer Schusswaffe 10 fest montierten Verankerungselement 41, von dem eine darin beweglich oder fest verankerte Kuppelstange 47 hervorsteht. Die Kuppelstange 47 hintergreift mit ihrem ersten Endabschnitt 473 ein am Systemkasten 30 befestigtes Gegenstück. Der Schaft 20 lässt sich in Axialrichtung flächig gegen den Systemkasten 30 festspannen, indem das Spannelement 48 in Radialrichtung von oben betätigt wird, ohne dass am Schaft 20 ein diesen in Längsrichtung durchsetzendes Verbindungselement vorgesehen werden muss.In summary, the present invention relates to a mounting device 40 with an anchoring element fixedly mounted on the shaft 20 of a firearm 10 41, from which a coupling rod 47 protrudes, which is movably or firmly anchored therein. The coupling rod 47 engages with its first end section 473 behind a counterpart fastened to the system box 30. The shaft 20 can be clamped flat against the system box 30 in the axial direction by actuating the clamping element 48 in the radial direction from above, without the need for a connecting element on the shaft 20 which extends through it in the longitudinal direction.

BezugszeichenlisteList of reference symbols

1010 SchusswaffeFirearm 2020 HinterschaftButtstock 2121 AxialbohrungAxial bore 2222 Freiraumfree space 2525 VerbindungsbereichConnection area 3030 SystemkastenSystem box 3131 GewindebohrungThreaded hole 4040 MontagevorrichtungMounting device 4141 VerankerungselementAnchoring element 4242 BuchseRifle 4343 SchraubelementScrew element 43A43A erster Gewindeteilfirst threaded part 43B43B zweiter Gewindeteilsecond threaded part 430430 StirnwandFront wall 431431 Sacklochblind hole 436436 Schlitzslot 4444 Gummiring (zweite Verdrehsicherung)Rubber ring (second anti-twist device) 4545 FederFeather 4646 SpannmutterClamping nut 460460 StirnwandFront wall 461461 DurchgangslochThrough hole 462462 konische Innenflächeconical inner surface 468468 HinterendeRear end 4747 KuppelstangeCoupling rod 470470 StirnwandFront wall 471471 zweiter Endabschnittsecond end section 472472 konische Außenwandconical outer wall 473473 erster Endabschnittfirst final section 474474 KopplungsflächeCoupling surface 475475 gerade Flächeflat surface 476476 Vorsprung (erste Verdrehsicherung)Projection (first anti-twisting device) 477477 nasenförmiger Teilnose-shaped part 4848 Madenschraube (Spannelement)Grub screw (clamping element) 4949 Querstift (Gegenstück)Cross pin (counterpart)

Claims (8)

  1. A firearm (10) comprising a receiver (30), a stock (20) and a mounting device (40) for releasably attaching the stock (20) to the receiver (30), wherein the mounting device (40) comprises:
    an anchoring element (41) that can be permanendy mounted on the stock (20) or the receiver (30),
    a coupling rod (47) which is movably or firmly anchored to the anchoring element (41) and which is designed to project with its first end portion (473) from the anchoring element (41) when the anchoring element (41) is mounted, and
    a clamping element (48) for locking the coupling rod (47) to the receiver (30) or stock (20),
    wherein the clamping element (48) for locking the coupling rod (47) is movable transversely to the direction of shooting of the firearm (10),
    wherein the coupling rod (47) has an inclined or curved coupling surface (474) at its first end portion (473),
    characterised in that
    a counterpart (49) is provided on the receiver (30) or stock (20), which has a contact pressing surface shaped in the opposite direction to the coupling surface (474), and
    the clamping element (48) is adapted to press the coupling surface (474) of the coupling rod (47) against the contact pressing surface of the counterpart (49) when it is actuated transversely to the direction of shooting and to allow the coupling surface (474) to slide on the contact pressing surface as a result of the radial pressure of the clamping element (48) on the coupling rod (47), thereby drawing the stock (20) and receiver (30) towards each other in the axial direction until their facing surfaces are pressed against each other in a tightly fitting manner.
  2. The firearm (10) according to claim 1, wherein
    the coupling surface (474) is trough-shaped,
    the counterpart is a substantially cylindrical fixing pin (49), and
    the coupling surface (474) is shaped such that it fits snugly against the cylindrical surface of the fastening pin (49).
  3. The firearm (10) according to any preceding claim, wherein the coupling rod (47) has a surface (475) for pressing the clamping element (48) on its first end portion (473) on the side opposite the coupling surface (474) transverse to the direction of shooting.
  4. The firearm (10) according to any preceding claim, wherein
    the anchoring element (41) has a screw element (43) arranged on the stock (20) or the receiver (30) in the direction of shooting and a clamping nut (46) rotatably fastened to the screw element (43), and
    the clamping nut (46) has a through hole (461) for the coupling rod (47) on its end wall (460), so that a second end portion (471) of the coupling rod (47) is arranged between the end wall (460) of the clamping nut (46) and the screw element (43).
  5. The firearm (10) according to claim 4, wherein
    the end wall (460) of the clamping nut (46) has a tapering, in particular conical or spherical section-shaped, inner surface (462) on its inner side, and
    the coupling rod (47) has at its second end portion (471) an outer wall (472) with a diameter which narrows in the opposite direction to this inner surface (462).
  6. The firearm (10) according to claim 4 or 5, wherein the second end portion (471) of the coupling rod (47) has a first anti-rotation device on its end wall (470) with respect to the screw element (43), in particular an axial projection (476), which engages in a slot (436) on an end wall (430) of the screw element (43) and allows the coupling rod (47) to be swivelled about a swivel axis extending transversely to the direction of shooting, but does not allow the coupling rod (47) to rotate relative to the screw element (43).
  7. The firearm (10) according to any one of claims 4 to 6, wherein a second anti-rotation device is provided between the screw element (43) and a bushing (42) fixed in the stock (20) or receiver (30), in particular a rubber ring (44), which ensures that the slot (436) can always be in a certain rotational position aligned with the projection (476) of the coupling rod (47) when the screw element (43) is tightened in the bushing (42).
  8. The firearm (10) according to any preceding claim, wherein the clamping element (48) is a screw, in particular a grub screw, which is operable in a threaded bore (31) extending in the receiver (30) transversely to the direction of shooting.
EP21179058.9A 2020-07-01 2021-06-11 Mounting device for releasably attaching a shaft to a system box of a firearm Active EP3933337B1 (en)

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Application Number Priority Date Filing Date Title
DE102020117398.9A DE102020117398A1 (en) 2020-07-01 2020-07-01 Mounting device for releasably attaching a stock to a system case of a firearm

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EP3933337A1 EP3933337A1 (en) 2022-01-05
EP3933337C0 EP3933337C0 (en) 2024-04-17
EP3933337B1 true EP3933337B1 (en) 2024-04-17

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EP21179058.9A Active EP3933337B1 (en) 2020-07-01 2021-06-11 Mounting device for releasably attaching a shaft to a system box of a firearm

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Country Link
EP (1) EP3933337B1 (en)
DE (1) DE102020117398A1 (en)
HU (1) HUE066699T2 (en)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1582533A (en) 1922-06-01 1926-04-27 Jr Ralph G Packard Bolt gun
DE8507509U1 (en) * 1985-03-14 1985-06-20 Kindle, Samuel, Triesen Forearm mount for hunting rifles
US6886286B2 (en) 2001-08-10 2005-05-03 Samuel F. Dowding Method of attaching the stock of a firearm to a frame
DE10205503C1 (en) 2002-02-09 2003-07-10 Manfred Orth Take down rifle has barrel and forepiece locked to stock using spring loaded catch
ATE498105T1 (en) 2004-03-11 2011-02-15 Voere Holding Gmbh GUN
AT502407B1 (en) * 2005-09-14 2007-03-15 Steyr Mannlicher Holding Gmbh GUN
US7823315B2 (en) 2005-10-20 2010-11-02 O.F. Mossberg & Sons, Inc. Method and apparatus for easy connect stocks
US20070089347A1 (en) 2005-10-20 2007-04-26 Webber Kevin A Easy connect stock and forend system
US20100154274A1 (en) 2007-09-07 2010-06-24 Stone Jeffrey W Receiver-stock connector
US8056280B2 (en) 2008-09-23 2011-11-15 Browning Firearm having an improved forearm fastening mechanism
DE102017102005A1 (en) 2017-02-01 2018-08-02 Heinz-Eckhard Engel Handgun with tool-less removable and mountable butt stock

Also Published As

Publication number Publication date
EP3933337C0 (en) 2024-04-17
EP3933337A1 (en) 2022-01-05
HUE066699T2 (en) 2024-08-28
DE102020117398A1 (en) 2022-01-05

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