DE29803775U1 - Firearm - Google Patents

Abstract

The firearm shaft has a main shaft part and at least one additional shaft component, such as a shaft jaw or a shaft cap, which is fixed to the main part by a support (10) and is pivotable around an axis running perpendicularly or parallel to firing direction. The pivot axis runs outside the shaft main body. At least one additional shaft component is linearly movable in relation to the main shaft part in a displacement direction running transverse to the pivot axis. This additional component can be releasably fixed in each pivot or displacement position in relation to the shaft main part. The support has at least one connecting component (30,40), which is preferably columnar or strip-shaped. The connecting component is coupled to the additional shaft component on one side by a link permitting a pivot movement around the pivot axis and is fixable to the shaft main part on the other side.

Description

CARPENTER

PATENT ATTORNEYS

EUROPEAN PATENT ATTORNEYS

EUROPEAN TRADEMARK ATTORNEYS

Dipl.-Ing. H. Leinweber (i9?6t)
DipUlng. Heinz Zimmermann
Dipl.-Ing. A, Gf. &ngr;. Wengersky
Dipl.-Phys. Dr. Jürgen Kraus
Dipl.-Ing. Thomas Busch
Dipl.-Phys. Dr. Klaus Seranski

Rosental 7

D-80331 Munich

TEL +49-89-231124-0
FAX+49-89-231124-11

04.03.1998 ksar

Our sign

JG Anschütz GmbH
Daimlerstrasse 12, 89079 Ulm

Firearm stock

The invention relates to a firearm stock with a main stock part and at least one additional stock element, such as a cheek piece or a stock cap, which is secured thereto via a support and can be pivoted about a pivot axis running transversely or parallel to the firing direction, a support for such a firearm stock and a firearm provided with such a firearm stock.

Firearm stocks of the type specified at the beginning are used in particular in competition weapons, such as sports rifles, to adapt the stock shape to the anatomical conditions of the shooter or to adapt the stock shape to the conditions in different shooting positions (lying, kneeling and standing).

··

In a firearm stock known from DE 44 43 984 Al the butt plate is provided with a side surface of the

... . . the main shaft part is attached to the main shaft part by a support that spans the main shaft part and two screws that pass through the support and the main shaft part. One of the screws used to attach the butt cap support is housed in an elongated hole in the butt cap support. The elongated hole is arranged in such a way that the butt cap support together with the butt cap can be swiveled around the screw that is not housed in the elongated hole and forms a swivel axis that runs transversely to the direction of fire and is approximately horizontal in the firing position. In practical use, it has been shown that the known firearm stock cannot achieve a satisfactory adaptation of the stock shape to the anatomical conditions of the shooter and the conditions prevailing in the various firing positions.

The object of this invention is therefore to provide a firearm stock of the type specified at the outset, the shape of which can be satisfactorily adapted to the prevailing conditions, in particular to the anatomical conditions of the shooter and the requirements of the various shooting positions, as well as to provide a carrier for such a firearm stock and a firearm equipped with it.

With regard to the firearm stock, this task is solved by a further development of the known firearm stock, which is essentially characterized by the fact that the pivot axis runs outside the main body of the stock. This solution is based on the knowledge that the poor adjustment properties of the known firearm stock are primarily due to the fact that every pivoting movement of the butt cap is accompanied by a displacement of the same along a transverse

to the pivot axis, because each pivoting movement is carried out via a relatively long pivot lever in the form of the side surfaces of the shaft main

_, partly overarching carrier. Through the inventive

&tgr; displacement of the swivel axis according to the invention: to a location outside the main shaft part, however, a decoupling of the swivel movement from displacements transverse to the swivel axis is made possible, because a swivel movement about a swivel axis running outside the main shaft body can be mediated via a very short swivel lever or even without any swivel lever.

In order to further adapt the stock shape to the prevailing conditions, it has proven to be particularly useful if at least one of the additional stock elements can be moved linearly in relation to the main stock part in a direction running transversely to the pivot axis. An additional stock element in the form of a butt cap can be moved linearly parallel to the firing direction, while an additional stock element in the form of a cheek piece can be moved in a direction perpendicular to the firing direction and approximately vertically in the firing position. In addition, however, it can also be provided that the butt cap can also be moved vertically and that the cheek piece can also be moved horizontally in a direction running transversely to the pivot axis. In any case, it is particularly advantageous if the additional shaft element can be fixed in at least two, preferably any pivoting and/or displacement position relative to the main shaft part, in order to safely maintain the individual shaft shapes set by adjusting the additional shaft elements during the competition.

From a structural point of view, it has proven to be particularly advantageous if the carrier has at least one, preferably

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column- or strip-shaped connecting element, which on the one hand is coupled to the additional shaft element via a joint that allows a pivoting movement around the pivot axis and on the other hand can be fixed to the main shaft part. To simplify further changes to the shaft shape, it has proven to be particularly advantageous if the connecting element is connected via the joint to a support plate that can be fixed to the additional shaft element. With this arrangement, the additional shaft element can also be moved linearly with respect to the support plate without influencing the pivoting movement made possible by the joint and/or tilted about a tilt axis running transversely to the pivot axis. For this purpose, the support plate is preferably provided with at least one elongated hole that serves to fix the additional shaft element and that allows a linear displacement of the shaft element with respect to the support plate. Furthermore, the support plate can also be provided with a convex or concave curved contact surface that interacts with a complementary counter surface of the shaft element.

20. mentes enables a tilting movement of the additional shaft element around the tilting axis running transversely to the pivot axis.

A further change in shape of the firearm shaft according to the invention, which is largely independent of the pivoting movement, is made possible if the connecting element can be linearly displaced in a displacement direction running transversely to the pivot axis with respect to the main shaft part. In this case, an undesired rotation of the main shaft part about the longitudinal axis of the connecting element can be particularly reliably prevented without significantly impairing the pivoting possibilities about the pivot axis and the displacement possibilities in the displacement direction if the carrier has at least two connecting elements, which preferably run approximately parallel to one another, each of which is coupled on the one hand to the additional shaft element via a joint and on the other hand to

the main shaft part. The pivoting movement around the pivot axis is made particularly easy if the connecting elements can be moved linearly independently of one another with respect to the main shaft part. If the distance between the connecting elements running parallel to one another is kept constant, the change in the distance between the joint axes of the joints used to couple the individual connecting elements to the additional shaft element can be absorbed by one of the joints in the event of a linear displacement of only one of these connecting elements, which has two joint parts, one of which is provided with a joint bolt extending parallel to the pivot axis and the other with an elongated hole penetrated by the joint bolt and extending transversely to the direction of displacement.

The adaptation of the shape of the firearm stock according to the invention to the competition conditions is simplified if at least one connecting element is provided with a stop element that limits its linear displacement in at least one direction and is preferably displaceable with respect to the connecting element. With the help of such a stop element, a preset stock shape can be easily reproduced even after the additional stock element has been released.

From a constructional point of view, it has proven to be particularly useful if at least one connecting element is provided with a profile that is in positive engagement with an actuating element that can be actuated to bring about the linear displacement. For this purpose, the connecting element can be at least partially formed in the form of a threaded rod onto which an actuating element in the form of a nut is screwed. This nut can also be used as a stop element with which the linear displacement of the connecting element is limited. For this purpose, it has proven to be

proved to be particularly useful when the nut screwed onto the threaded rod is particularly stiff and/or self-locking.

-·_■ If the connecting element is at least partially formed in the form of a toothed or threaded rod, a gear wheel that meshes with the toothed or threaded rod and is rotatable about an axis of rotation that runs transversely to the direction of displacement and is fixed with respect to the main shaft part can also be used as the actuating element.

The additional shaft element can be held particularly easily in the individual swivel and/or displacement positions if at least one of the connecting elements can be releasably secured with respect to the main shaft part using a clamping device. A clamping device that can be used for this purpose advantageously has a guide body that serves to guide the linear displacement of the connecting element and a clamping body that presses the connecting element against this guide body. To avoid damage to a connecting element part in the form of a rack or threaded rod, the tooth tips or the tips of the threaded webs are expediently flattened.

In terms of construction, it has proven to be useful if the clamping device has at least one clamping screw that passes through the guide body or the clamping body and is received in a threaded hole in the clamping body or the guide body, the head of which is preferably at least partially exposed. To avoid an unnecessary number of components, the guide body and the clamping body can be formed in one piece. To avoid an unnecessary increase in the total volume of a firearm stock according to the invention, at least one of the connecting elements can be at least partially received in a recess formed in the main body of the stock.

To reproduce preset shaft shapes, it has proven particularly useful if at least one of the connecting elements is provided with a scale extending along the direction of displacement, which is displaced in the event of a linear displacement relative to the main shaft body and is visible from the outside.

As can be seen from the above explanation of a firearm stock according to the invention, a carrier according to the invention for such a firearm stock is essentially characterized in that it has at least two connecting elements which can be secured on the one hand to a main shaft part and on the other hand can be coupled in an articulated manner to an additional shaft element, preferably running approximately parallel to one another, whereby the articulated coupling of the connecting elements to the additional shaft element can be carried out via a carrier plate which can be secured to the additional shaft element and the additional shaft element can be secured with respect to the main shaft part with a clamping device which can be secured to the main shaft part.

The invention is explained below with reference to the drawing, to which reference is expressly made with regard to all details essential to the invention and not detailed in the description. In the drawing shows:

Fig. 1 is a bottom view of a carrier for a firearm stock according to the invention according to a first

0 embodiment of the invention,

Fig. 2 is a side view of the carrier according to Fig. 1,

Fig. 3 is a plan view of the carrier according to Fig. 1,
35

Fig. 4 is a side view of a firearm stock having two supports according to Fig. 1,

Fig. .5 a view of the firearm stock according to Fig. 4 from behind, · - "' " ■ ' . - ■ * ·

Fig. 6 Bottom view of a carrier for a firearm stock according to the invention according to a second embodiment of the invention,
10

Fig. 7 is a side view of the carrier according to Fig. 6 and

Fig. 8 is a view of the carrier according to Fig. 6 from behind.

The carrier for a firearm stock according to the invention shown in Figs. 1 to 3 is intended both for securing a butt cap and for securing a cheek piece to the main part of a firearm stock. This carrier essentially has a carrier plate 20, two connecting elements 30 and 40 in the form of threaded rods that are articulated to it, and a clamping device 50 through which the threaded rods 30 and 40 pass. The carrier plate 20 is provided with threaded holes 26 and slots 28 that serve to secure a butt cap or cheek piece. The slots 28 enable variable positioning and fastening of butt caps and cheek pieces with T-nuts and screws, while the threaded holes 26 enable fixed positioning of cheek pieces or caps.

On the underside of the support plate 20, lugs 22 and 24 are arranged, which engage in slots provided at the upper end of the threaded rods 30 and 40. Both the lugs 22 and 24 and the upper ends of the threaded rods 30 and 40 are provided with recesses, which are used by hinge pins of the articulated connections between the threaded rods 30 and 40 on the one hand.

and the carrier plate 20 on the other hand. The recess formed in the projection 22 is in the form of an elongated hole 23 extending transversely to the longitudinal axis of the threaded rod 30. In this way, the carrier plate 20 can be pivoted about the screw 42 by linear displacement of the threaded rod 30 with respect to the threaded rod 40 while maintaining the distance between the threaded rods. The length of the elongated hole 23 is dimensioned such that the carrier plate 20 can be pivoted upwards and downwards by approximately 15° starting from the position shown in Fig. 2. The linear displacement of the threaded rods 3 0 and 4 0 is limited by self-locking stop nuts 34 and 44 screwed onto them, which, in the stop position, rest against the clamping device penetrated by the threaded rods 3 0 and 40.

The clamping device 50 essentially consists of a guide body 54 with recesses penetrated by the threaded rods 30 and 40 and two clamping bodies 56 extending from the guide body 54 towards one another. With the individual clamping bodies 56, one of the threaded rods 30 and 40 can be pressed against the guide body 54 and thus fixed. For this purpose, the clamping device 50 is provided with two screws 58 penetrating the guide body 54, each of which engages in a threaded hole in one of the clamping bodies 56. The threaded rods 30 and 40 can be fixed in the guide body 54 by tightening the clamping screws 58 which are rotatably mounted in the guide body 54. For this purpose, the clamping screws 58 are provided with exposed hexagon socket heads. After loosening the clamping screws 58, the threaded rods 30 and 40 can be moved linearly in the guide body 54, whereby the stop nuts 34 and 44 form a stop for this linear movement. To avoid damage to the threaded rods 30 and 40 under the influence of the clamping forces provided by the clamping screws 58,

kraft sirid whose threads are formed by thread webs with flattened tips, i.e. in the form of trapezoidal threads.

The guide body 54 is penetrated by a total of 3 holes 52 .5 !, into which screws can be inserted to secure the guide body 54 and therefore the entire carrier 10 to a main shaft part.

Fig. 4 and 5 show a main shaft part provided with two supports according to Fig. 1 to 3. The support 10 arranged on the back of the main shaft part 60 serves to secure a butt cap to the main shaft part 60, while the support 10' arranged on the top of the main shaft part 60 serves to secure a cheek piece. As can be seen particularly clearly in Fig. 4, the threaded rods 30, 40, 30' and 40' of the supports 10 and 10' are received in holes 62, 64, 62' and 64' formed in the main shaft part 60. By linearly displacing the threaded rods 30 and 40 in the holes 62 and 64, the butt cap can be displaced parallel to the firing direction. At the same time, by linearly moving only one of the threaded rods 3 0 and 4 0 and simultaneously fixing the other threaded rod, a pivoting movement of the carrier plate 2 0 and a butt cap attached to it can take place around a pivot axis running perpendicular to the direction of fire and formed by the screw 3 2 or the screw 4 2. To do this, first loosen the corresponding clamping screw 58 of the guide body 54 attached to the main shaft body 60 with screws 51 received in the holes 52 and then make the desired displacement 0 of the threaded rod. The stop nuts 34 and 44 can be used to ensure that a previously defined presetting can also be reproduced after loosening the clamping screws 58.

In a similar way, the carrier plate 20· of the carrier 10' and thus also a cheek piece attached to it can be moved vertically by vertically moving the racks 30' and 40' in the holes 62' and 64' and can be pivoted about a 5. pivot axis " running perpendicular to the direction of fire.

The support for a firearm stock according to the invention shown in Figs. 6 to 8 is also intended both for securing a cheek piece and for securing a stock cap to a main shaft part. This embodiment differs essentially from the embodiment shown in Figs. 1 to 3 in that instead of connecting elements in the form of threaded rods, connecting elements in the form of racks 130 and 140 provided with teeth 131 and 141 are used.

These racks 130 and 140 are connected in an articulated manner to a carrier plate 12 0. For this purpose, the carrier plate 12 0 is provided with two downward-pointing projections 122 and 124, each of which is penetrated by a recess. Screws 132 and 142 are inserted into these recesses, which penetrate the racks 130 and 140 at their upper ends and are received in a nut thread on the corresponding rack 130 or 140. The nut placed on the screw 132 is designated in Fig. 8 with the reference number 13 2. To enable a pivoting movement of the carrier plate 120, the recess formed in the projection 12 2 is implemented in the form of an elongated hole 123 extending transversely to the longitudinal axis of the rack 13 0. The racks 130 and 140 penetrate a guide body 154 of a clamping device 150 that can be secured to a main shaft part of a firearm shaft. In order to secure it to the main shaft part, the guide body 154 is penetrated by recesses 152 intended to accommodate fastening screws.

The guide body 154 also accommodates gears 13.4 and 144 which are mounted so as to rotate about axes of rotation running parallel to the screws 132 and 142 and which mesh with the teeth 131 and 141 of the racks 130 and 140. Each of these gears 134 and 144 is provided with an exposed hexagon socket 134a or 144a into which a corresponding tool can be inserted. By rotating the gears 134 and 144, the racks 130 and 140 can be moved linearly in the guide body 154. This can cause a linear displacement of the carrier plate 120 and a shaft element attached to it with respect to the guide body 154 on the one hand and a pivoting movement about one of the screws 132 and 142 on the other. The elongated hole 123 in the extension 122 is also designed in this embodiment of the invention so that the support plate 120 can be pivoted upwards and downwards by 15° each starting from the horizontal position shown in Fig. 7. To fix the racks 130 and 140 in a 0 position reached by turning the gears 134 and 144, the clamping device is provided with a claw 156 that can be placed on the racks. A clamping screw 158 is accommodated in the claw, which is inserted into a threaded hole in the guide body 154. By tightening the clamping screw 158, the threaded rods 130 and 140 can be pressed against the guide body 154 and thus fixed. Pre-fixing can be achieved if the gears 134 and 144 are mounted in the guide body 154 so that they move with difficulty. A further fixation of the carrier plate 12 0 can be achieved by tightening the screws 13 2 and 14 2. To simplify the reproduction of individual positions of the carrier plate 120, the racks 130 and 140 are provided with scales 14 0 that are visible from the outside.

The invention is not limited to the embodiments explained with reference to the drawing. Rather,

thought about coupling the connecting elements directly to the shaft elements. Furthermore, connecting elements with different cross-sectional shapes, for example connecting elements with a triangular cross-section, can also be used. In addition, instead of the carrier plates with flat surfaces shown in the drawing, carrier plates with concave or convex curved surfaces can also be used, which, in conjunction with complementary contact surfaces of the shaft elements, enable a tilting movement of the shaft elements around a tilting axis running perpendicular to the pivot axes. This tilting axis can run approximately in the direction of fire when fastening cheek pieces.

Claims (24)

14 Protection claims 1. Firearm stock with a main shaft part (60) and at least one additional shaft element, such as a cheek piece or a butt cap, which is fixed thereto via a support (10; 110) and can be pivoted about a pivot axis running transversely or parallel to the direction of fire, characterized in that the pivot axis runs outside the main shaft body (60).
10 2. Firearm stock according to claim ₁₇ , characterized in that at least one additional shaft element is linearly displaceable with respect to the main shaft part (60) in a displacement direction extending transversely to the pivot axis. 3. Firearm stock according to claim 1 or 2, characterized in that the additional stock element can be releasably locked in at least two, preferably each pivoting and/or displacement position relative to the main stock part (60). 4. Firearm stock according to one of the preceding claims, characterized in that the carrier (10; 110) has at least one, preferably column- or strip-shaped connecting element (30, 40; 130, 140) which is on the one hand coupled to the additional shaft element via a joint allowing a pivoting movement about the pivot axis and on the other hand can be fixed to the main shaft part (60). 5. Firearm stock according to claim 4, characterized in that the connecting element (30, 4 0; 13 0, 14 0) is connected via the joint to a carrier plate (20; 120) that can be fixed to the additional stock element. 6. Firearm stock according to claim 5, characterized in that the additional stock element is linearly displaceable relative to the carrier plate (20; 120) and/or tiltable about a tilt axis running transversely to the pivot axis. 7. Firearm stock according to one of claims 4 to 6, characterized in that the connecting element (3 0, 4 0; 13 0, 140) is linearly displaceable in the direction of displacement relative to the main shaft part (60). 8. Firearm stock according to one of claims 4 to 7, characterized in that the carrier (10; 110) has at least two connecting elements (30, 40; 130, 140) which preferably run approximately parallel to one another, each of which is coupled to the additional stock element via a joint on the one hand and can be fixed to the main stock part (60) on the other hand. 9. Firearm stock according to claim 8, characterized in that the connecting elements (30, 40; 130, 140) are linearly displaceable independently of one another with respect to the main shaft part (60). 10. Firearm stock according to one of claims 4 to 9, characterized in that at least one of the joints has two joint parts (22, 32), one of which is provided with a joint pin (32) extending parallel to the pivot axis and the other with an elongated hole (23; 123) through which the joint pin passes and which extends transversely to the direction of displacement. 11. Firearm stock according to one of claims 4 to 10, characterized in that at least one connecting element (30, 40) is provided with a limiting element which preferably limits its linear displacement in at least one direction with respect to the connecting element. ing element adjustable stop element (34, 44). 12. Firearm stock according to one of claims 4 to 11, :: characterized in that at least one connecting element (30, 40; 130, 140) is provided with a profile which is in positive engagement with an actuating element (34, 44; 134, 144) which can be actuated to effect the linear displacement.
10 13. Firearm stock according to claim 12, characterized in that at least one connecting element is at least partially formed in the form of a threaded rod (30, 40), and the actuating element (34, 44) is a nut screwed onto the threaded rod (30, 40). 14. Firearm stock according to claim 12, characterized in that at least one connecting element (130, 140) is at least partially formed in the form of a toothed or threaded rod, and the actuating element has a gear (134, 144) which meshes with the toothed or threaded rod and is rotatable about an axis of rotation which runs transversely to the direction of displacement and is fixed with respect to the main shaft part (60). 15. Firearm stock according to one of claims 4 to 14, characterized in that at least one connecting element (30, 40; 130, 140) can be releasably secured with respect to the main shaft part (60) by means of a clamping device (50; 150). 16. Firearm stock according to claim 15, characterized in that the clamping device (50; 15 0) has a guide body (54; 154) serving to guide the linear displacement of the connecting element (30, 40; 130, 14 0) and a clamping body (56; 156) urging the connecting element (30, 40; 130, 14 0) against it. 17. Firearm stock according to claim 16, characterized in that the clamping device (50) has a clamping screw (58) which passes through the guide body (54) and/or the clamping body (56) and is received in a threaded bore in the guide body (54) and/or the clamping body (56), the head of which is preferably at least partially exposed. 18. Firearm stock according to claim 16 or 17, characterized in that the guide body (54) and the clamping body (56) are formed in one piece. 19. Firearm stock according to one of claims 4 to 18, characterized in that at least one connecting element (30, 40) is at least partially received in a recess (62, 64) formed in the main shaft body (60). 20. Firearm stock according to one of claims 4 to 19, characterized in that at least one connecting element (130, 140) is provided with a scale (139, 149) extending along the direction of displacement. 21. Support for a firearm stock according to one of the preceding claims with two connecting elements (30, 40; 130, 140) which can be fixed on the one hand to a main shaft part and on the other hand can be coupled in an articulated manner to an additional shaft element, preferably running parallel to one another. 22. Support according to claim 21, characterized in that the connecting elements (30, 40; 130, 140) are connected in an articulated manner to a support plate (20; 120) which can be fixed to the additional shaft element. 23. Carrier according to claim 21 or 22, characterized in that the connecting elements (30, 40; 130, 140) are provided with a the clamping device (50; 150) that can be fixed to the main shaft part can be releasably secured with respect to the main shaft part. 24. Firearm with a firearm stock according to one of claims 1 to 20.