EP3933337B1 - Dispositif de montage destiné à la fixation amovible d'un arbre à un boîtier système d'une arme à feu - Google Patents

Dispositif de montage destiné à la fixation amovible d'un arbre à un boîtier système d'une arme à feu 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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Application number
EP21179058.9A
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German (de)
English (en)
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EP3933337C0 (fr
EP3933337A1 (fr
Inventor
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)

Claims (8)

  1. Arme à feu (10) comprenant une boîte de culasse (30), une crosse (20) et un dispositif de montage (40) pour fixer de manière amovible la crosse (20) à la boîte de culasse (30), dans laquelle le dispositif de montage (40) comprend :
    un élément d'ancrage (41) pouvant être monté de manière fixe sur la crosse (20) ou la boîte de culasse (30),
    une tige d'accouplement (47) mobile ou ancrée de manière fixe sur l'élément d'ancrage (41), qui est conçue pour faire saillie de l'élément d'ancrage (41) par sa première partie d'extrémité (473) lorsque l'élément d'ancrage (41) est monté, et
    un élément de serrage (48) pour bloquer la tige d'accouplement (47) sur la boîte de culasse (30) ou la crosse (20),
    l'élément de serrage (48) pouvant être déplacé pour bloquer la tige d'accouplement (47) transversalement à la direction du canon de l'arme à feu (10),
    la tige d'accouplement (47) présentant une surface de couplage inclinée ou incurvée (474) au niveau de sa première partie d'extrémité (473),
    caractérisé en ce que
    une contre-pièce (49) est prévue sur la boîte de culasse (30) ou sur la crosse (20), qui présente une surface de pression formée à l'opposé de la surface de couplage (474), et
    l'élément de serrage (48) est conçu pour presser, lors de son actionnement, la surface de couplage (474) de la tige d'accouplement (47) contre la surface de pression de la contre-pièce (49) et, par la pression radiale de l'élément de serrage (48) sur la tige d'accouplement (47), pour faire glisser la surface de couplage (474) sur la surface de pression, et ainsi rapprocher la crosse (20) et la boîte de culasse (30) l'un vers l'autre dans la direction axiale jusqu'à ce que leurs surfaces en regard soient pressées l'une contre l'autre de manière à s'ajuster étroitement.
  2. Arme à feu (10) selon la revendication 1, dans laquelle
    la surface de couplage (474) est en forme d'auge,
    la contre-pièce est une broche de fixation sensiblement cylindrique (49), et
    la surface de couplage (474) est formée de manière à s'adapter à la surface d'enveloppe cylindrique de la broche de fixation (49).
  3. Arme à feu (10) selon l'une quelconque des revendications précédentes, dans laquelle la tige d'accouplement (47) présente, sur sa première partie d'extrémité (473), du côté opposé à la surface de couplage (474) transversalement à la direction du canon, une surface (475) pour presser l'élément de serrage (48).
  4. Arme à feu (10) selon l'une quelconque des revendications précédentes, dans laquelle
    l'élément d'ancrage (41) présente un élément à vis (43) disposé sur la crosse (20) ou la boîte de culasse (30) dans la direction du tir et un écrou de serrage (46) fixé de manière rotative sur l'élément à vis (43), et
    l'écrou de serrage (46) présente sur sa paroi frontale (460) un trou de passage (461) pour la tige d'accouplement (47), de sorte qu'une deuxième partie d'extrémité
    (471) de la tige d'accouplement (47) est disposée entre la paroi frontale (460) de l'écrou de serrage (46) et l'élément à vis (43).
  5. Arme à feu (10) selon la revendication 4, dans laquelle
    la paroi frontale (460) de l'écrou de serrage (46) présente sur son côté intérieur une surface intérieure (462) qui se rétrécit, en particulier conique ou en forme de section de sphère, et
    la tige d'accouplement (47) présente, à sa deuxième partie d'extrémité (471), une paroi extérieure (472) dont le diamètre se rétrécit à l'opposé de cette surface intérieure (462) .
  6. Arme à feu (10) selon la revendication 4 ou 5, dans laquelle la deuxième partie d'extrémité (471) de la tige d'accouplement (47) présente, sur sa paroi frontale (470), un premier dispositif anti-rotation par rapport à l'élément à vis (43), en particulier une saillie axiale (476), qui s'engage dans une fente (436) sur une paroi frontale (430) de l'élément à vis (43) et permet un pivotement de la tige d'accouplement (47) autour d'un axe de pivotement s'étendant transversalement à la direction de tir, mais n'autorise pas de rotation de la tige d'accouplement (47) par rapport à l'élément à vis (43).
  7. Arme à feu (10) selon l'une quelconque des revendications 4 à 6, dans laquelle il est prévu, entre l'élément de vissage (43) et une douille (42) fixée dans la crosse (20) ou la boîte de culasse (30), un deuxième dispositif anti-rotation, en particulier un anneau en caoutchouc (44), qui garantit que la fente (436) peut toujours se trouver dans une position de rotation déterminée, qui est alignée sur la saillie (476) de la tige d'accouplement (47), lorsque l'élément de vissage (43) est serré dans la douille (42).
  8. Arme à feu (10) selon l'une des revendications précédentes, dans laquelle l'élément de serrage (48) est une vis, en particulier une vis sans tête, qui peut être actionnée dans un trou taraudé (31) s'étendant dans la boîte de culasse (30) transversalement à la direction de tir.
EP21179058.9A 2020-07-01 2021-06-11 Dispositif de montage destiné à la fixation amovible d'un arbre à un boîtier système d'une arme à feu Active EP3933337B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020117398.9A DE102020117398A1 (de) 2020-07-01 2020-07-01 Montagevorrichtung zur lösbaren Befestigung eines Schafts an einem Systemkasten einer Schusswaffe

Publications (3)

Publication Number Publication Date
EP3933337A1 EP3933337A1 (fr) 2022-01-05
EP3933337B1 true EP3933337B1 (fr) 2024-04-17
EP3933337C0 EP3933337C0 (fr) 2024-04-17

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP21179058.9A Active EP3933337B1 (fr) 2020-07-01 2021-06-11 Dispositif de montage destiné à la fixation amovible d'un arbre à un boîtier système d'une arme à feu

Country Status (2)

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EP (1) EP3933337B1 (fr)
DE (1) DE102020117398A1 (fr)

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 (de) * 1985-03-14 1985-06-20 Kindle, Samuel, Triesen Vorderschaftshalterung für Jagdwaffen
US6886286B2 (en) 2001-08-10 2005-05-03 Samuel F. Dowding Method of attaching the stock of a firearm to a frame
DE10205503C1 (de) 2002-02-09 2003-07-10 Manfred Orth Gewehr, umfassend einen Hinterschaft, einen Vorderschaft und einen Lauf
EP1574806B1 (fr) 2004-03-11 2011-02-09 Voere Holding GmbH Fusil
AT502407B1 (de) * 2005-09-14 2007-03-15 Steyr Mannlicher Holding Gmbh Gewehr
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 (de) 2017-02-01 2018-08-02 Heinz-Eckhard Engel Handfeuerwaffe mit werkzeuglos abnehmbarem und montierbarem Hinterschaft

Also Published As

Publication number Publication date
EP3933337C0 (fr) 2024-04-17
DE102020117398A1 (de) 2022-01-05
EP3933337A1 (fr) 2022-01-05

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