EP3420302B1 - Firearm with removable barrel - Google Patents

Description

The present invention relates to a firearm with a removable barrel, which has a mounting rail connected to it, extending in the direction of the barrel's longitudinal axis, which is suitable, for example, for mounting a target optics that has an advantageous mounting device on the system housing for the barrel, whereby the invention in particular the field of firearms with interchangeable barrels can be used.

Firearms with exchangeable barrels are known in which the target optics are mounted on a separate component, the so-called barrel extension, located between the system housing and the barrel. With these firearms, however, the target optics must be recalibrated every time the barrel is changed.

A known mounting device for exchangeable barrels is a clamping device by means of which the barrel can be mounted directly on the system housing. This saves the barrel extension as an additional component. Such a firearm is, for example, in the RU 2303227 C1 described. However, with these firearms it is not possible to mount an optical aiming device directly on the barrel in the area of the cartridge chamber. Here, too, the exact retention between the barrel axis and the optical axis of the visor must be guaranteed by a new calibration after every barrel change.

Another firearm with a removable barrel is from the DE 10 2009 051416 A1 known.

The object of the present invention is therefore to provide a firearm with a removable barrel which does not have the disadvantages mentioned, in which in particular the parallelism between barrel axis and optical axis is retained after the barrel change and the barrel is particularly easy to assemble.

The object is achieved by a firearm according to claim 1.

The present invention thus provides a firearm with a detachable barrel, which comprises a system housing and a barrel, the barrel having a mounting rail connected to it and extending in the direction of the barrel's longitudinal axis, which is suitable for mounting target optics.

According to the invention, the system housing has a receptacle, by means of which the barrel is connected to the system housing, the receptacle being at least partially tubular in the direction of the barrel's longitudinal axis and the corresponding inside diameter of the barrel being adapted to the outside circumference of the barrel, so that the barrel during assembly of the barrel to the System housing inserted into the receptacle in the direction of the barrel longitudinal axis and can be guided out of the receptacle in the direction of the barrel longitudinal axis when the barrel is dismantled.

Furthermore, according to the invention, the receptacle has a recess in the pipe circumference which extends in the direction of the longitudinal axis of the barrel so that the receptacle describes an open ring shape in cross section perpendicular to the longitudinal axis of the barrel and in the region of the recess.

According to the invention, the barrel is axially fixed in relation to the barrel's longitudinal axis by at least one connecting element (4) and rotatably fixed at least in that the mounting rail extends in its longitudinal direction at least partially within the recess of the receptacle.

The rotational fixation works in such a way that, when the barrel is rotated, one of the edges of the receptacle running on the recess in the direction of the barrel's longitudinal axis hits one of the longitudinal flanks of the mounting rail.

In the clamping device according to the invention, in addition to its actual function, the mounting rail thus also functions as a means for fixing the barrel with respect to rotation about the barrel's longitudinal axis. The barrel is pushed into the clamping device or into the receptacle in such a way that the mounting rail is guided through the slot or the recess in the clamping device until the barrel hits the system housing. The clamping device is part of the system housing. The firearm according to the invention is characterized by a particularly simple and safe assembly device for the barrel and enables barrel disassembly and reassembly without losing the sighting axis presetting with respect to the barrel axis.

According to a preferred embodiment, the fixation with regard to rotation is additionally ensured by the at least one connecting element. This offers additional security and stability to the construction of the mounting device.

The connecting element is preferably a screw connection. Further possible connecting elements can, for example, be pinned connections that are secured with a split pin, which, however, are less easily reproducible and therefore can be disadvantageous compared to screw connections when the barrel is changed frequently

Furthermore, the receptacle preferably has tabs pointing away from the barrel on the two edges running on the recess in the direction of the longitudinal axis of the barrel, such that the receptacle in the area of the tabs has the shape and function of a clamp into which the barrel is clamped. The tabs provide a means of attaching fasteners. The clamping force can be transferred to the holder and finally to the barrel via the tabs.

A first of the at least one connecting element preferably comprises a screw, comprising a screw head and a bolt having a thread, the bolt extending through one of the tabs and through a longitudinal flank of the mounting rail into the mounting rail, the screw head resting on the outside of the tab and the thread of the bolt is screwed into a mating thread inside the mounting rail. This enables the barrel to be secured axially and rotationally with only one screw in a particularly simple manner.

A second connecting element is preferably provided which corresponds to the first connecting element and is arranged opposite the first connecting element in relation to the vertical plane lying in the longitudinal axis of the barrel. Due to the symmetrical arrangement of the screws, one-sided deformations in the overall construction, for example due to material fatigue, are eliminated.

More preferably, a total of at least four and an even number of connection elements are provided, which are arranged in pairs corresponding to the first and the second connection element. This further increases the stability, in particular with regard to the tilt protection.

According to a preferred embodiment, the tabs of the receptacle rest against the longitudinal flanks of the mounting rail in a press fit. This represents a particularly strong connection, in particular with regard to the rotation lock of the barrel around its longitudinal axis.

As an alternative to this, and likewise preferably, the tabs of the receptacle are spaced apart from the longitudinal flanks of the mounting rail, so that a press fit between the receptacle and the barrel only results on the outer circumferential surface of the barrel. As a result, the full clamping force is distributed particularly evenly over the outer circumference of the barrel.

According to a further preferred embodiment, the at least one connecting element comprises a screw, comprising a screw head and a bolt having a thread, and a lock nut and connects two tabs of the tabs located on the receptacle, which are opposite in relation to the vertical plane lying in the running axis, the screw head and the lock nut each resting on the outside of the opposite brackets and the bolt being guided through a continuous, horizontal and perpendicular to the direction of the longitudinal axis of the barrel in the mounting rail. This will make the Mounting rail largely decoupled from the clamping force. Furthermore, elastic deformation caused by opposing screws being tightened to different degrees is avoided, since here the clamping force that acts on one bracket from the screw head is identical to the clamping force that acts on the opposite bracket from the nut. This increases the accuracy of the firearm.

In this embodiment too, in which the screw bolt is guided through a through hole in the mounting rail, the tabs connected by the connecting element preferably rest against the longitudinal flanks of the mounting rail in a press fit.

As an alternative to this and also preferably, in this embodiment too, the tabs connected by the connecting element are spaced apart from the longitudinal flanks of the mounting rail, so that a press fit between the receptacle and the barrel is only achieved on the outer circumferential surface of the barrel.

According to a further preferred embodiment, the at least one connecting element comprises a screw comprising a screw head and a bolt having a thread, the screw head resting on the outer circumferential surface of the tubular receptacle and the bolt being radially aligned with respect to the longitudinal axis of the barrel and extending through the Receiving through, extends into the barrel, the mating thread required for a screw connection being in the barrel. This also ensures both the axial and the rotational fixation of the barrel with just one screw in a particularly simple and secure manner.

In the above embodiment, in which the bolt of the screw is aligned radially to the barrel longitudinal axis, there are preferably at least two connecting elements according to the at least one connecting element, which are distributed in a first plane perpendicular to the barrel longitudinal axis on the outer circumferential surface of the receptacle. In this way, elastic deformations caused by the clamping force can be avoided, which contributes to increasing the aiming accuracy of the firearm.

More preferably, there are four connecting elements in the plane perpendicular to the longitudinal axis of the barrel, according to the at least one connecting element, which are distributed on the outer circumferential surface of the receptacle in such a way that two of them are opposite each other. This symmetrical arrangement of the screws, which are each aligned radially to the longitudinal axis of the barrel, ensures a particularly even distribution of the clamping force and thus increases the accuracy of the firearm even further.

Even more preferably, in the above embodiment, there is at least one further plane comprising these connecting elements, plane-parallel to the first plane. This increases the stability considerably, in particular with regard to the tilt protection.

In this above embodiment, the edges of the receptacle that run on the recess in the direction of the longitudinal axis of the barrel are preferably in contact with the longitudinal flanks of the mounting rail. On the one hand, this facilitates the assembly of the barrel, since the holes provided for the connecting elements in the tubular section of the receptacle and in the barrel are already in register when the barrel is pushed into the receptacle. The screws can thus be screwed in immediately without the aforementioned holes having to be brought into congruence beforehand by rotating the barrel about the barrel's longitudinal axis. On the other hand, this also improves the fixation of the barrel with regard to rotation about the barrel's longitudinal axis.

According to a further preferred embodiment, the barrel has a radially outwardly extending projection (23) on its outer surface and the receptacle (31) has a thread (36) on its tubular outer circumference (33) on the front end section, on this thread (36) a pipe section (52) provided with an internal thread is screwed, which in an area in the longitudinal direction of the barrel has a radially inwardly extending projection at the front, so that the pipe section (52), guided over the barrel (2) from the front, on the projection (23) of the barrel (2) and fixes it in the axial direction by screwing it onto the thread (36) of the receptacle (31). This represents a particularly simple and effective fixing of the barrel. The at least one connecting element according to the invention therefore only exists from a single piece of pipe, which is passed over the barrel from the front during assembly of the barrel and screwed onto the thread on the mount. The opening of the pipe section therefore has an inner diameter which is greater than that of the barrel, apart of course from the region of the barrel on which the said outwardly extending projection is located. The area of the mating thread of the pipe section has an inner diameter that is larger than the outer diameter of the barrel in the area where the said ring is located, so that the mating thread of the pipe section can be guided over the projection of the barrel and screwed onto the thread of the receptacle . Another region of the pipe section adjoining the mating thread, however, has an inside diameter which is smaller than the outside diameter at the projection of the barrel. The pipe section has, so to speak, a radially inwardly extending projection which, during assembly, abuts against the radially outwardly extending projection of the barrel.
In this above embodiment, the edges of the receptacle that run on the recess in the direction of the longitudinal axis of the barrel preferably bear against the longitudinal flanks of the mounting rail. This prevents the barrel from rotating about its longitudinal axis, which increases the wear resistance of the construction.

Figur 1A und 1B

eine Seitenansicht, beziehungsweise eine perspektivische Ansicht einer Feuerwaffe mit abnehmbarem Lauf gemäß einer Ausführungsform,

Figur 2

eine Explosionsdarstellung einer Feuerwaffe mit drei Wechselläufen gemäß einer Ausführungsform,

Figur 3

eine perspektivische Ansicht des Systemgehäuses mit Schaft gemäß der in Figur 2 dargestellten Ausführungsform,

Figur 4

eine Seitenansicht und eine Frontansicht des in Figur 3 dargestellten Systemgehäuses, sowie ein vergrößerter Ausschnitt der Seitenansicht und eine Darstellung eines Querschnitts (C-C) aus diesem Ausschnitt,

Figur 5

eine Seitenansicht und eine Frontansicht der in Figur 2 dargestellten Feuerwaffe, Darstellungen eines Querschnitts (D-D) und eines vertikalen Längsschnitts (A-A) sowie ein vergrößerter Ausschnitt des Längsschnitts,

Figur 6

eine perspektivische Ansicht, eine Seitenansicht und eine Frontansicht einer Feuerwaffe gemäß einer weiteren Ausführungsform, Darstellungen eines Querschnitts (C-C) und eines vertikalen Längsschnitts (A-A) sowie ein vergrößerter Ausschnitt des Längsschnitts,

Figur 7

eine Explosionsdarstellung einer Feuerwaffe gemäß einer weiteren Ausführungsform,

Figur 8

eine perspektivische Ansicht des Systemgehäuses mit Schaft gemäß der in Figur 7 dargestellten Ausführungsform,

Figur 9

eine Seitenansicht des in Figur 8 dargestellten Systemgehäuses, sowie ein vergrößerter Ausschnitt daraus und eine Darstellung eines Querschnitts (B-B) aus diesem Ausschnitt,

Figur 10

eine perspektivische Ansicht, eine Seitenansicht und eine Frontansicht der in Figur 7 dargestellten Feuerwaffe, Darstellungen eines Querschnitts (C-C) und eines vertikalen Längsschnitts (A-A) sowie ein vergrößerter Ausschnitt des Längsschnitts,

Figur 11

eine Explosionsdarstellung einer Feuerwaffe gemäß einer weiteren Ausführungsform,

Figur 12

eine perspektivische Ansicht des Systemgehäuses mit Schaft gemäß der in Figur 11 dargestellten Ausführungsform,

Figur 13

eine Seitenansicht des in Figur 12 dargestellten Systemgehäuses, sowie ein vergrößerter Ausschnitt daraus und eine Darstellung eines Querschnitts (D-D) aus diesem Ausschnitt und

Figur 14

eine perspektivische Ansicht, eine Seitenansicht und eine Frontansicht der in Figur 11 dargestellten Feuerwaffe, Darstellungen eines Querschnitts (C-C) und eines vertikalen Längsschnitts (A-A) sowie ein vergrößerter Ausschnitt des Längsschnitts zeigen.

Certain embodiments of the invention are described below with reference to the drawings, wherein

Figures 1A and 1B

a side view or a perspective view of a firearm with a removable barrel according to an embodiment,

Figure 2

an exploded view of a firearm with three interchangeable barrels according to an embodiment,

Figure 3

a perspective view of the system housing with shaft according to the in Figure 2 illustrated embodiment,

Figure 4

a side view and a front view of the in Figure 3 system housing shown, as well as an enlarged section of the side view and a representation of a cross section (CC) from this section,

Figure 5

a side view and a front view of the in Figure 2 Firearm shown, representations of a cross section (DD) and a vertical longitudinal section (AA) as well as an enlarged detail of the longitudinal section,

Figure 6

a perspective view, a side view and a front view of a firearm according to a further embodiment, representations of a cross section (CC) and a vertical longitudinal section (AA) and an enlarged detail of the longitudinal section,

Figure 7

an exploded view of a firearm according to a further embodiment,

Figure 8

a perspective view of the system housing with shaft according to the in Figure 7 illustrated embodiment,

Figure 9

a side view of the in Figure 8 system housing shown, as well as an enlarged excerpt from it and a representation of a cross section (BB) from this excerpt,

Figure 10

a perspective view, a side view and a front view of the FIG Figure 7 shown firearm, representations of a cross section (CC) and a vertical longitudinal section (AA) and an enlarged section of the longitudinal section,

Figure 11

an exploded view of a firearm according to a further embodiment,

Figure 12

a perspective view of the system housing with shaft according to the in Figure 11 illustrated embodiment,

Figure 13

a side view of the in Figure 12 shown system housing, as well as an enlarged section from it and a representation of a cross section (DD) from this section and

Figure 14

a perspective view, a side view and a front view of the FIG Figure 11 shown firearm, representations of a cross section (CC) and a vertical longitudinal section (AA) and an enlarged detail of the longitudinal section.

The ones in the Figures 1A and 1B The firearm (1) shown represents an embodiment of the present invention. It comprises a barrel (2), a system housing (3), a mounting rail (21) and, by way of example, a target lens attached to the mounting rail (21). The barrel (2) is clamped in a receptacle (31) which partially surrounds the rear part of the barrel (2) and which is fastened to the mounting rail (21) in the upper area with screws (4).

In addition to target optics, other or additional known target devices and other attachments can be mounted on the mounting rail (21), for example a "Picatinny Rail". The mounting rail (21) is advantageously connected directly to the barrel (2), for example by means of a screw connection (see, for example, the enlarged section in Figure 5 ). It is also possible that the mounting rail (21) is connected to the barrel (2) in a materially bonded manner, for example by means of welding, so that the barrel (2) and the mounting rail (21) are present as an integral component. The mounting rail (21) can advantageously protrude beyond the rear end of the barrel (2), as a result of which sighting devices can be attached directly above the locking area of the barrel (21).

When assembling the Figures 1A and 1B The firearm (1) shown is the barrel (2) with the integrated mounting rail (21), as in Figure 2 shown, guided with its rear end into the receptacle (31) of the system housing (3). The mounting rail (21) is guided within the recess (32) provided for it in the receptacle (31) ( Fig. 3 ). On the long edges (35) ( Fig. 4 ) the recess (32) are attached upwardly protruding tabs (34), through which the screws (4) are screwed to the mounting rail (21). With the tabs (34), the receptacle (31) thus has the shape of a clamp (S) in cross section and also functions according to the same principle.

At this point it should be made clear that the terms "front", "rear", "top", "bottom", "horizontal" and "vertical" relate in the context of the present invention to the position of the firearm which is usual when using a firearm, wherein the target optics (if present) is at the top, while the handle for the hand on the trigger points away from the firing axis (A) essentially downwards. The projectile eventually emerges from the front of the firearm.

According to the embodiment in FIGS Figures 1 to 5 the opposite brackets (34) are connected to the mounting rail (21) with a total of eight screws (4) in the form of four pairs of screws, each of which has two screws (4) opposite one another. The number of screws (4) is not restricted in principle. It is preferred that the screws (4) are arranged opposite one another in pairs. 2, 3, 4, 5, 6 or 7 pairs of screws are particularly preferred. Each additional pair of screws increases the anti-tipping or kink protection of the firearm (1). Buckling or tilting is to be understood as the deformation of the firearm (1), for example as a result of a radial force acting on the front end of the barrel (2) in relation to the stationary system housing (3). The tabs (34) lie directly against the longitudinal flanks (22) of the mounting rail (21) and are press-fitted with them. The mating threads (25) to the screws (4) are located within the holes provided for the screw connections in the mounting rail (21).

The size and shape of the mounting rail (21) are not particularly restricted according to the invention. In a cross section of the barrel through the mounting rail (21), the part of the outer circumference of the barrel (2) occupied by the mounting rail (21) should preferably be smaller than half the circumference of the barrel (2) in order to improve the clamping of the barrel (2). to achieve. In the cross-section above the flanks (22), the mounting rail (21) can be wider than in the area of the flanks (22) and can be dimensioned as desired depending on the type of firearm and the intended add-on parts. All known or standardized mounting rails can be used. Examples of this are the Picatinny rail or the Weaver rail.

In the embodiment according to Figures 1 to 5 the mounting rail (21) is clamped between the opposite brackets (34). The clamping effect here, however, also extends over the circumference of the tubular region of the receptacle (31) within which the outer circumference of the barrel (2) is clamped. The screws (4) fix the barrel both axially and rotationally, while the mounting rail (21) also contributes to the rotational fixation due to the accuracy of fit with which it is located in the recess (32) of the receptacle (31).

According to the invention, the receptacle (31) is part of the system housing (3) and, as in FIG Figures 3 , 8th and 12 can be seen, preferably cohesively continued backwards into the area of the locking device. The material thickness in the area of the surface (33) of the tubular section of the receptacle (31) is preferably designed in such a way that the screwing creates an elastic deformation through which the rear part of the barrel (2) is separated from the tubular section of the receptacle (31) is pinched.

The above in connection with the embodiment according to FIGS Figures 1 to 5 The features of the mounting rail (21) and the receptacle (31) described can also be combined independently of one another with the other embodiments described herein, provided this does not lead to an objective technical contradiction, and therefore constitute part of the general disclosure of the present invention.

In Figure 6 FIG. 11 is an embodiment similar to that in FIGS Figures 1 to 5 shown. Here, too, the opposite brackets (34) are connected with screw connections, whereby the barrel (2) is clamped. Instead of the pairs of screws, however, a screw (4) with its bolt (42) is passed through completely from one bracket (34) to the other bracket (34) through a through hole in the mounting rail (21) and on the one opposite the screw head (41) Side secured with a lock nut (51). This design ensures that the clamping forces acting on the opposite straps are identical, because the force acting from the screw head (41) corresponds to the counterforce acting from the nut. The bore in the interior of the mounting rail (21) therefore has no mating thread, which decouples the mounting rail (21) from the clamping force to a certain extent.

Another difference of the embodiment according to Figure 6 to the in the Figures 1 to 5 is that the tabs (34) do not rest directly on the longitudinal flanks (22) of the mounting rail (21) and are therefore not in a press fit with them. This also decouples the mounting rail from the clamping force and thus ensures even better target accuracy. The clamping force thus acts almost exclusively on the outer circumferential surface of the barrel (2). However, it is also possible or preferred to design the clamping device in such a way that when the screw connection (4) is tightened, the bolt (42) is pressed down within the bore, i.e. onto the bottom of the bore, and thus contributes directly to the clamping of the barrel . The spacing of the tabs (34) from the longitudinal flanks (22) of the mounting rail (21) further increases the freedom of design of the mounting rail (21), since the flanks (22) no longer have to be designed to accommodate the tabs (34) . The mounting rail (21) can therefore be designed to be flatter, for example, as shown in the illustration of the cross-section CC of Figure 6 compared to the cross section DD in Figure 5 is shown by way of example.

In Figure 6 three screw connections (4) are shown. Even with this type of screw connection, the number of screws (4) is not particularly restricted. It is preferably at least two, in particular 2, 3, 4, 5, 6 or 7.

In the Figures 7 to 10 a further embodiment is shown. This has the simplest form of the receptacle (31) according to the invention, namely a tube with the recess (32) provided for the mounting rail (21). The cross section (BB) of the receptacle (31) therefore has the shape of an open ring in the region of the recess (32). As in all embodiments, the barrel (2) is guided to the rear during assembly into the receptacle (31) until it strikes the system housing (3). In this embodiment, the barrel (2) is then screwed to the receptacle (31) by screwing screws (4) through the jacket surface (33) of the receptacle (31) into the barrel (2). The corresponding screw bolts (42) are thus aligned radially in relation to the longitudinal axis (A) of the barrel. The corresponding mating threads (24) are located in the holes provided for the screw connections (4) in the barrel (2). In this embodiment, too, the number of screws (4) is not particularly limited. For high stability and a uniformly acting clamping force, it is preferred that each screw (4) together with at least one further, in particular together with one, two, three or four further screws (4) and most preferably together with three further screws ( 4) is arranged in a plane perpendicular to the longitudinal direction of the barrel. More preferably there are at least two different, in particular two, three or 4 different planes perpendicular to the longitudinal direction of the barrel, in which, as described in the preceding sentence, at least two screws (4) are arranged. The ones in the Figures 7 to 10 The illustrated embodiment accordingly shows three levels with 4 screws each.

The longitudinal edges (35) of the receptacle (31) can also be used in the Figures 7 to 10 shown embodiments directly on the flanks (22) of the mounting rail (21), or be spaced from them. As described above, both variants have their advantages.

Another embodiment of the firearm (1) according to the invention is in the Figures 11 to 14 shown. As in the previous embodiment, the receptacle (31) consists only of a pipe section with a recess (32) provided for the mounting rail (21). In a front area, the receptacle (31) has a thread (36) that encompasses the entire circumference of the pipe section (with the exception, of course, of the recess). A pipe section (52) is then screwed on in the axial direction in relation to the barrel's longitudinal axis (A) after the barrel (2) has been pushed into the receptacle (31). The pipe section (52) is guided over the barrel (2) from the front. To axially fix the barrel (2) on the system housing (3), the pipe section (52) has at least two different areas in the longitudinal direction of the barrel. The mating thread for screwing the pipe section (52) on the receptacle (31) is provided in the rear area of the pipe section (52). In the front area the pipe section (52) has a radially inwardly extending projection and thus a smaller inner diameter than in the rear area. The barrel (2) accordingly has a radially outwardly extending projection (23) in the area in front of the receptacle (31), the outside diameter of which is greater than the inside diameter of the projection of the pipe section (52) in its front area. When guiding the pipe section (52) over the barrel (2) and screwing the pipe section (52) onto the thread (36), the pipe section (52) strikes the projection (23) with its "narrow" area in the axial direction Runs on and thus fixes the barrel (2) to the system housing (3).

The design of the pipe section (52) is not particularly restricted and can be dimensioned differently depending on the type and caliber of the firearm (1). In particular, the length of the areas of the pipe section (52) in the axial direction, i.e. the length of the mating thread to the thread (36) on the receptacle (31) and the length of the area with the inwardly extending projection (52) can be adjusted independently of one another as required be dimensioned. The pipe section (52) can have a special shape or texture on its outer circumferential surface, which improves the grip. In this embodiment of the firearm (1), the barrel can be changed by hand without the need for any tool, such as a screwdriver or the like.

The connection device according to the Figures 11 to 14 is preferably designed so that both pipe section (52) and projection (23), as well as barrel (2) and system housing (3) are brought together to the stop. However, it is also possible that the projection (23) on the barrel (2) is clamped by the receptacle (31) and the projection on the pipe section (52) and the barrel (2) is not on the stop with the system housing (3). Most preferably, the barrel (2) and the system housing (3) are brought together against a stop and the projection (23) on the barrel (2) is simultaneously clamped between the receptacle (31) and the pipe section (52).

The longitudinal edges (35) of the receptacle (31) can also be used in the Figures 11 to 14 shown embodiments directly on the flanks (22) of the mounting rail (21), or be spaced from them. As already described, both variants have their advantages.

REFERENCE LIST

1

Firearm

2

Run

3

System housing

4th

Connecting element

21st

Mounting rail

22nd

Long side flank of the mounting rail

23

Radially outwardly extending projection on the barrel

24

Thread in the barrel

25th

Thread inside the hole in the mounting rail

31

admission

32

Recess

33

Outer peripheral surface of the tubular receptacle

34

Tab

35

Edges of the receptacle running at the recess in the direction of the longitudinal axis of the barrel

36

Thread on the mount

41

Screw head

42

Screw bolts

43

Thread on the screw bolt

51

Lock nut

52

Pipe section with internal mating thread

53

Headwinds on the lock nut

A.

Longitudinal axis of the barrel

d1

Inside diameter of the receptacle

S.

clamp

Claims (19)

1. Firearm (1) with detachable barrel (2), comprising a system housing (3) and a barrel (2), the barrel (2) having a mounting rail (21) connected thereto and extending in the direction of the longitudinal axis (A) of the barrel, which is suitable for mounting a target optic,
   wherein the system housing (3) has a receptacle (31) by means of which the barrel (2) is connected to the system housing (3),
   wherein the receiver (31) is tubular at least partially in the direction of the longitudinal axis (A) of the barrel and the corresponding internal diameter (d1) of the tube is adapted to the outer circumference of the barrel (2), so that the barrel (2) can be inserted into the receiver (31) in the direction of the longitudinal axis (A) of the barrel during the assembly of the barrel (2) to the system housing (3) and can be guided out of the receiver (31) in the direction of the longitudinal axis (A) of the barrel during the disassembly of the barrel (2), and wherein the receptacle (31) has a recess (32) of the pipe circumference which extends in the direction of the longitudinal running axis (A), so that the receptacle (31) describes an open ring shape in cross-section perpendicular to the longitudinal running axis (A) and in the region of the recess (32),
   wherein the barrel (2) is axially fixed with respect to the longitudinal axis (A) of the barrel by at least one connecting element (4), characterised in that the barrel (2) is rotationally fixed with respect to the longitudinal axis (A) of the barrel at least by the fact that the mounting rail (21) extends in its longitudinal direction at least partially within the recess (32) of the receiver (31).
2. Firearm (1) according to claim 1, characterised in that the fixing with respect to rotation is additionally ensured by the at least one connecting element (4).
3. Firearm (1) according to one of claims 1 or 2, characterized in that the connecting element (4) is a screw connection (4).
4. Firearm (1) according to one of the claims 1 to 3, characterised in that the receiver (31) has tabs (34) pointing away from the barrel (2) at the two edges (35) extending at the recess (32) in the direction of the longitudinal axis (A) of the barrel, in such a way that the receiver (31) in the region of the tabs (34) has the shape and function of a clip (S) into which the barrel (2) is clamped.
5. Firearm (1) according to claim 4, characterised in that a first of the at least one connecting element (4) comprises a screw comprising a screw head (41) and a bolt (42) having a thread (43), wherein the bolt (42) extends through one of the straps (34) and through a longitudinal flank (22) of the mounting rail (21) into the mounting rail (21), the bolt head (41) resting on the outside of the strap (34) and the thread (43) of the bolt (42) being screwed into a counter thread (25) inside the mounting rail (21).
6. Firearm (1) according to claim 5, characterized in that a second connecting element (4) corresponding to the first connecting element (4) is provided, which, with respect to the vertical plane lying in the longitudinal axis (A) of the barrel, is arranged opposite the first connecting element (4).
7. Firearm (1) according to claim 6, characterized in that a total of at least four and an even number of connecting elements (4) are provided, which are arranged in pairs corresponding to the first and the second connecting element (4).
8. Firearm (1) according to any one of claims 4 to 7, characterized in that the tabs (34) of the receiver (31) rest against the longitudinal flanks (22) of the mounting rail (21) with an interference fit.
9. Firearm (1) according to one of the claims 5 to 7, characterized in that the tabs (34) of the receiver (31) are spaced apart from the longitudinal flanks (22) of the mounting rail (21) so that an interference fit between the receiver (31) and the barrel (2) results only on the outer peripheral surface of the barrel (2).
10. Firearm (1) according to any one of claims 1 to 4, characterized in that the at least one connecting element (4) comprises a screw (4), comprising a screw head (41) and a bolt (42) having a thread (43), and a lock nut (51), and the connecting element (4) connects two straps (34) of the straps (34) located on the receiver (31), which straps (34) are located opposite one another with respect to the vertical plane and in the barrel axis, the bolt head (41) and the lock nut (51) each resting on the outside of the opposing lugs (34) and the bolt (42) being guided through a continuous horizontal bore in the mounting rail (21) which extends perpendicularly to the direction of the longitudinal running axis (A).
11. Firearm (1) according to claim 10, characterized in that the straps (34) connected by the connecting element (4) bear against the longitudinal flanks (22) of the mounting rail (21) in a press fit.
12. Firearm (1) according to claim 10, characterized in that the straps (34) connected by the connecting element (4) are separated from the longitudinal flanks (22) of the mounting rail (21) in a press fit.
13. Firearm (1) according to one of claims 1 to 3, characterized in that the at least one connecting element (4) comprises a screw (4) comprising a screw head (41) and a bolt (42) having a thread (43), wherein the bolt head (41) abuts the outer circumferential surface (33) of the tubular receptacle (31) and the bolt (42) is radially oriented with respect to the longitudinal axis (A) of the barrel and extends, through the receptacle (31), into the barrel (2), the counter-thread (24) required for a screw connection being located in the barrel (2).
14. Firearm (1) according to claim 13, characterized in that at least two connecting elements (4) are present according to the at least one connecting element (4), which are distributed in a first plane perpendicular to the longitudinal axis (A) of the barrel on the outer peripheral surface (33) of the receiver (31).
15. Firearm (1) according to claim 14, characterized in that in the plane perpendicular to the longitudinal axis (A) of the barrel there are four connecting elements (4) corresponding to the at least one connecting element (4), which are distributed on the outer peripheral surface (33) of the receiver (31) in such a way that two of them are opposite each other.
16. Firearm (1) according to one of claims 14 or 15, characterised in that at least one further plane comprising these connecting elements (4) is present plane-parallel to the first plane.
17. Firearm (1) according to one of the claims 13 to 16, characterised in that the edges (35) of the receiver (31) extending at the recess (32) in the direction of the longitudinal axis (A) of the barrel rest against the longitudinal flanks (22) of the mounting rail (21).
18. Firearm (1) according to claim 1, characterized in that the barrel (2) has a projection (23) extending radially outwards on its outer surface and in that the receiver (31) has a thread (36) on its tubular outer circumference (33) at the front end section, a tubular piece (52) provided with an internal thread being screwed onto this thread (36), which has a projection extending radially inwards in a region at the front in the longitudinal direction of the barrel, so that the tubular piece (52), guided from the front over the barrel (2), bears against the projection (23) of the barrel (2) and fixes the latter in the axial direction by screwing it onto the thread (36) of the receiver (31).
19. Firearm (1) according to claim 18, characterised in that the edges (35) of the receiver (31), which extend at the recess (32) in the direction of the barrel longitudinal axis (A), abut the longitudinal flanks (22) of the mounting rail (21).

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