EP3867590A1

EP3867590A1 - Mounting device for a firearm

Info

Publication number: EP3867590A1
Application number: EP19773334.8A
Authority: EP
Inventors: Christian KADA; Karl Hittmann; Lukas Michael ULBING
Original assignee: MDG Muzzle Devices GmbH
Current assignee: MDG Muzzle Devices GmbH
Priority date: 2018-10-16
Filing date: 2019-09-16
Publication date: 2021-08-25
Anticipated expiration: 2039-09-16
Also published as: WO2020077373A1; BR112021005664A2; EP3867590B1; US20210333062A1

Abstract

The present invention relates to a device (1) for mounting an attachment (2) on the muzzle end (3) of a firearm, which attachment has at least two diametric recesses (10) in its outer circumference, the device comprising: a sleeve (5) which can be slid onto the muzzle end (3) and has an axial-normal opening (7); a mounting piece (11) which can be connected to the attachment (2) and has a tubular extension (12) which can be inserted into an annular space between the muzzle end (3) and the sleeve (5) and can be screw-fastened to the sleeve (5); and a locking element (6) which is radially displaceable in the opening (7) of the sleeve (5) between a closed position, in which its two legs (8) engage in one of the recesses (10) each with an inwardly directed rib (9), and an open position, which is released from the recesses (10). When the locking element (6) is in the closed position, end sections (15) of the legs (8) fit under the extension (12) inserted into the annular space.

Description

Mounting device for a firearm

The present invention relates to a device for mounting an attachment at the muzzle end of a firearm, which has at least two diametrical Ausneh on its outer circumference, in particular in the form of a circumferential groove.

From the prior art it is known to use silencers, blank cartridges, compensators and other attachments, i.e. Devices for mounting in the axial extension of the barrel of a firearm, to be screwed to the end of the muzzle using a specially provided thread. A change of such attachments is complex because a safe installation is only guaranteed by a correspondingly long thread and complete screwing on. Furthermore, the muzzle end of many firearms includes a muzzle device, e.g. a muzzle flash damper, a muzzle brake, a compensator or the like, which ches, like the long-widespread, standardized by NATO "A2" muzzle flash damper, has no thread for screwing an attachment, so that an additional mounting device is required .

Known assembly devices for an attachment often have a large number of components, which complicates the assembly and, in particular with complex component geometries, prevents simple and inexpensive production. A complicated assembly also increases the risk of improper implementation and, as a result, the attachment is not securely seated while the firearm is in use. The invention has for its object to provide a device which enables a quick and safe assembly of the attachment at the muzzle end of a firearm and is easy and inexpensive to produce.

This goal is achieved with a device of the type mentioned at the outset, which comprises:

a sleeve which can be pushed onto the mouth end to form an annular space and has an axially normal opening,

an assembly piece which can be connected or is connected to the attachment and has an essentially tubular extension which can be inserted into the annular space between the mouth end and the sleeve and screwed to the sleeve,

and a substantially horseshoe-shaped locking element, which in the opening of the sleeve between a closed position in which the two legs of the horseshoe each engage with an inward rib in one of the recesses, and an open position in which they are exempt from the Ausneh are, radially displaceable, wherein in the closed position of the locking element, the extension, when it is inserted into the annular space, at its end of Endabschnit th the undercuts.

Due to the special interaction of the three parts of the sleeve, mounting piece and locking element, the assembly of the device - and thus the attachment - in axial extension of the barrel at the muzzle end of the firearm is particularly easy and quick to do. end of the slide, the locking element is shifted into its closed position, and finally the extension of the mounting piece is screwed to the sleeve, which means that it engages at its end from the end sections of the legs of the locking element and the locking element is thus secured against unwanted displacement into its open position . The device is thus in its assembly position.

The assembly can be done in just a few simple steps, and disassembly or replacement of attachments is just as quick. Despite the simple operation, the attachment has a secure fit at the mouth end, due to the combination of locking on two diametrical recesses on the outer circumference of the mouth end on the one hand and securing the locking by the screwed extension on the other hand.

The device is very easy to build from a few parts. Each of the three parts is also of a simple shape, for example the sleeve and / or the mounting piece can largely be produced as a turned part, which enables inexpensive production of the device.

In an advantageous embodiment, the extension is tapered and the side of the locking element facing it has a complementary design. This results in a self-centering of the extension or in an additional radial force on the locking element in the direction of its closed position when the extension is screwed in place

Sleeve. In an alternative embodiment to this, the end of the extension is stepped and the side of the locking element facing it is designed to be complementary to it, so that when reaching under the screwed extension, radial forces can finally act between the ends of the legs of the locking element and the extension. This has the advantage that a locking element that is loaded in the direction of its open position does not transmit any axial forces to the extension.

Does the muzzle end have at least one lateral flattening which adjoins the diametrical recesses in the direction facing the firearm, which e.g. in the case of the "A2" muzzle fire damper, it is advantageous if each leg of the locking element is formed on the side of the rib facing away from the extension to form an inwardly projecting web, which is used to abut the lateral flattening of the muzzle device at the flattened end of the muzzle prevents rotation of the device around the muzzle end, which allows the attachment to be used particularly safely. It should be noted that U-shaped plug-in brackets which are inserted radially into an attachment and used to inhibit rotation of the system Such flattenings of a fire damper Mün can be brought, are known from the prior art.

It is expedient if the sleeve has at least one inner projection on its end facing away from the assembly piece for support on the outer circumference of the mouth end. This helps Ensure a good fit of the device on the muzzle end in the axial extension of the barrel by the inner projection supports the sleeve at the muzzle end. In a particularly favorable variant, this inner projection is equipped with at least one resilient pressure piece as a compensating element, which enables an additional application of force.

In a further advantageous embodiment, the extension has at least one inner projection for support on the outer circumference of the muzzle device. Similar to the inner projection of the sleeve, the inner projection of the extension helps to ensure a good fit of the device on the mouth end. The above-mentioned embodiments act - together or each separately - radially occurring forces, e.g. counteracting the force of gravity and thereby support that the attachment is kept coaxial to the inner shaft axis.

The assembly piece preferably forms an axial stop for the mouth end in the assembly position. As a result, the end of the mouth is clamped between the mounting piece and the locking element, whereby an axial fixing of the device and thus the attachment is supported relative to the end of the mouth and the firearm.

It is also advantageous if the locking element has at least one handle projecting in its closed position over the outer circumference of the sleeve. This enables a simple displacement of the locking element and simplifies the assembly and disassembly of the device. In an advantageous embodiment, the locking element strikes in its open position with a shoulder on a stop of the sleeve. This limits the radial displacement of the locking element and prevents it from falling out of the sleeve. As a result, the locking element is not a lost part, which further increases the usability and safety of the entire device even in the rough operation of the firearm.

It is particularly advantageous if the shoulder is formed by the end wall of a groove in the side of the locking element facing away from the mounting piece and the stop is formed by the end of a screw which passes axially parallel through the inner projection of the sleeve. This ensures a simple assembly of the device and precise guidance of the locking element in the sleeve opening up to the stop. The Füh tion is particularly reliable if each of the two legs of the locking element is each equipped with a pin guided in the guide groove. This facilitates a largely parallel radial displacement of the two legs and prevents tilting of the locking element when moving. The pin is either directly in the inner projection of the sleeve or e.g. mounted on the screw passing through this, which causes a simple disassembly of the device in the event of maintenance.

In a further advantageous embodiment, one of the two parts of the locking element and sleeve has at least one catch and the other part has a spring element cooperating therewith, by means of which the locking element in the open position with respect to the sleeve can be temporarily locked. Such a locking function prevents an unintentional Ver slide out of the open position and thereby allows a safer and faster handling of the device with or without an attachment.

In order to avoid or reduce the escape of hot powder gases under high pressure against the direction of the weft, it is advantageous if the extension has an inner circumferential recess in an axial section, which in the assembly position forms a cavity opposite the mouth end. The powder gases escaping from the barrel under high pressure can relax in this cavity until the projectile has left the attachment. Furthermore, it is particularly expedient if the sleeve has at least one, preferably at least two, pressure relief opening (s) distributed over its circumference. These openings radially discharge remaining gas pressure and prevent or reduce the escape of hot powder gas towards the shooter, e.g. through gaps between the mouth end and the sleeve. The pressure relief openings are arranged, for example, between the end of the extension and the inner projection.

The invention is explained below with reference to embodiments shown in the beige closed drawings. The drawings show:

1 shows a device according to the invention with an attached silencer in a perspective view obliquely from behind; Fig. 2 shows the device of Figure 1 in an Explosionsdar position from the side.

3a and 3b, the device of Fig. 1 in the mounting position in longitudinal section from the side (Fig. 3a) and an alternative variant (Fig. 3b) in an enlarged detail from Fig. 3a;

Fig. 4 shows the device of Fig. 1 in a perspective longitudinal section from obliquely behind; and

5a to 5d, a locking element of the device of FIG. 1 each in an axial view from the front (FIG. 5a) and rear (FIG. 5c) or in a perspective view from obliquely in front (FIG. 5b) and obliquely in rear ( Fig. 5d).

1 to 4 show a device 1 for mounting egg NES implement (in the example of FIG. 1: a silencer) 2 at the mouth end 3 of the barrel 4 of a (not shown) firearm.

The device 1 comprises a sleeve 5 which is pushed onto the muzzle end 3 for mounting the attachment 2 along an axis A (the "barrel core axis" of the barrel 4 of the firearm), an annular space being formed between the muzzle end 3 and the sleeve 5.

Furthermore, the device 1 comprises an essentially hoof-shaped locking element 6 (FIGS. 5a-5d), which is then inserted into an axially normal opening 7 of the sleeve 5 provided therefor and radially displaced into its closed position (FIGS. 1, 3a, 3b). The locking element 6 has on the two legs 8 (Fig. 5a) of his horseshoe inward directed ribs 9, which engage in the closed position in two mutually diametrically opposite recesses 10 on the outer circumference of the mouth end 3 and thereby prevent an axial displacement of the sleeve 5 at the mouth end 3.

Finally, the device 1 comprises a mounting piece 11 with a substantially tubular extension 12. The extension 12 of the mounting piece 11 is subsequently inserted into the annular space between the mouth end 3 and sleeve 5 and screwed to the sleeve 5 (FIG. 3a). For this purpose, an external thread 13 and in the sleeve 5 a complementary Innenge thread 14 is provided on the extension 12; Male and female threads 13, 14 are optional self-locking.

The device 1 is thus in its assembly position, in which the sleeve 5 is pushed onto the mouth end 3, the locking element 6 in its closed position and the extension 12 is screwed completely to the sleeve 5. In the mounting position, end portions 15 of the legs 8 of the locking element 6 engage under one end 16 of the extension 12 (FIG. 1), so that the end 16 of the extension 12 fixes the locking element 6 in its closed position.

With the attachment 2, the mounting piece 11 is either permanently connected or can be connected thereto, for example screwed, as will be explained in more detail below with reference to FIG. 1. With the aid of the device 1, the attachment 2 is mounted in this way in an axial extension of the barrel 4 at the muzzle end 3 of the firearm. To dismantle the device 1 from the mouth end 3, the screwing of the extension 12 on the sleeve 5 is first loosened at least to such an extent that the end 16 of the extension 12 releases the end sections 15 of the legs 8 of the locking element 6. The locking element 6 can then be moved radially into its open position, in which the ribs 9 are free from the recesses 10. In the fol ge, the sleeve 5 - and with it the entire device 1 and, if applicable, the attached implement 2 - can be subtracted from the mouth 3 in the direction of the axis A. Fig. 4 illustrates the partially assembled state of the device 1 achieved before. The device 1 can then be mounted without further decomposition in this partially assembled state on the same or one at the other end of the mouth 3 by reversing the order of the dismantling steps described.

In the variant of FIG. 3a, the end 16 of the extension 12 tapers conically in the direction of the locking element 6. Furthermore, the side of the locking element 6 facing the extension 12 is complementary thereto, i.e. the horseshoe of the locking element 6 is also conical on this side (Fig. 5a and Fig. 5b).

In the alternative variant of Fig. 3b, the end 16 of the extension 12 is stepped, that is, it has a smaller outer diameter than the rest of the extension 12. How is the extension 12 facing the side of the locking element 6 complementary, ie on his A stepped shoulder 17 is formed on this side of the horseshoe. It is understood that other combinations of shapes of extension end 16 and this side facing the locking element 6 are possible if reaching under the end 16 of the extension 12 from the end portions 15 of the horseshoe leg 8 of the locking element 6 in the assembly position of the device 1 is ensured. For example, a conical end 16 of the extension 12 can be combined with a step-shaped side of the locking element 6 and vice versa, or the end 16 of the extension 12 runs out unchanged tubular.

The muzzle end 3 is either the muzzle-side end of the barrel 4 of the firearm or a muzzle-mounted fire damper or compensator, a muzzle brake attached to it, or the like. Depending on the mouth end 3, the diametrical recesses 10 e.g. be designed as a circumferential groove; optionally the ribs 9 of the locking element 6 are complementary thereto, e.g. by the ribs 9 form a closed rib arch (Fig. 5b) which engages in the groove.

In the example in FIG. 2, the muzzle end 3 is an “A2” muzzle fire damper according to NATO standard. In the weft direction, this has at least one (here: two diametrical) holes in front of the diametrical recesses (here: in front of the first of two circumferential grooves) adjoining lateral flattening (s) 18. Complementary to the flattening (s) 18, one or each of the two legs 8 of the locking element 6 optionally has on one side of the rib 9 (here: on the extension 12). facing side of the rib 9) an inwardly projecting web 19 for abutment against the lateral flattening (s) 18. The webs 19 prevent the device 1 from rotating in the assembled position of the device 1 in cooperation with the lateral flattenings 18 about the axis A. .

4, the sleeve 5 has at its end facing away from the mounting piece 3 optionally a - radially inward - inner projection 20. With the inner projection 20, which is largely circumferential in the example shown, alternatively, however, completely circumferential, segmented or at all only as single ner tooth can be formed, the sleeve 5 is supported on the outer circumference of the mouth end 3 additionally. The Innenvor jump 20 can, if desired, be equipped with one or more springs the pressure pieces 21.

As shown in FIGS. 3a and 4, similar to the sleeve 5, the extension 12 also optionally has at least one (here: two) inner projections 22, 23 for supporting the extension 12 on the outer circumference of the mouth end 3. The inner projections 22, 23 are circulating here, but could alternatively also be segmented etc.

In a possible variant, the extension 12 also has in an axial section 24, which in this example lies between the two inner projections 22, 23, a recess 25 which rotates on its inner circumference and thereby in the assembly position of the device 1 on the mouth end 3 Forms a cavity between the extension 12 and the mouth end 3. This cavity helps, for example, under high pressure from the mouth end 3 from any radial openings 26 to take up emerging gas. For the radial derivation of the emerging pul gas, the sleeve 5, for example between the inner projection 20 and the screwed end 16 of the extension 12, at least ei ne, in the examples of FIGS. 1 and 2, two or more pressure relief openings distributed over the circumference of the sleeve 5 27 (Fig. 1, 2, 3a).

According to FIG. 3 a, the mounting piece 11 can, if desired, have a stop surface 28 with which the mounting piece 11 forms an axial stop for the mouth end 3 in the mounting position. Characterized the device 1 in addition to a grip of the ribs 9 in the recesses 10 in the direction of the axis A at the mouth end 3 is fixed. The stop surface 28 can be normal to the axis A, for example, or with this an angle of e.g. Include 45 degrees, i.e. be designed as a lateral surface of a truncated cone.

In the examples of FIGS. 5a to 5d, the locking element 6 has at least one (here: two) handles 29 projecting from the horseshoe. The handles 29 protrude in the closed position of the locking element 6 over the outer circumference of the sleeve

5 in front (Fig. 1) to remain accessible at all times.

4, 5c and 5d, the locking element

6 optionally a groove 30. The groove 30 faces away from the mounting piece 11 when the locking element 6 is inserted into the radial opening 7 of the sleeve 5. Can engage in the groove 30, for example, the end 31 of a screw 32 (Fig. 2), the guide forms in those in which the sleeve 5, the inner projection 20th has, for example, this sets through approximately parallel to axis A. In this way, at least the lower end wall 33 of the groove 30 shown in FIGS. 5c and 5d forms a shoulder of the locking element 6, with which the locking element 6 in its open position strikes the end 31 of the screw 32 forming a stop. It goes without saying that the shoulder of the locking element 6 and / or the stop of the sleeve 5 can alternatively be formed by elements other than the groove 30 with the end wall 33 or the screw 32, for example a stop could be in the sleeve 5 or even in the screw 32 (optionally resilient) mounted pin 34 may be provided.

In the example of FIG. 5c, the groove 30 also has depressions (for example blind holes) 35, 36 in its bottom. With these recesses 35, 36 the spring-loaded pin 34 of the screw 32 cooperates, so that the locking element 6 at least in its open position relative to the sleeve 5 speed, ie detachable, locked. In this example, the locking element 6 is also locked in its closed position due to the second recess 36; the groove 30 is at the same time a guide groove between the open and the closed position of the locking element 6, in which the screw 32 or the pin 34 is guided. Said locking can alternatively also be generated by other locking elements and spring elements designed and interacting on one of the two parts locking element 6 and sleeve 5, as is known to the person skilled in the art. In another Va riante shown in FIGS. 5c and 5d, the locking element 6 has not only a groove 30, but in each of its legs 8 a groove 30, 37, which guide grooves for each a pin (or a screw) 32 , 34, 38 (Fig. 1). The pins (or screws) 32, 34, 38 are arranged approximately parallel to the axis A on the inner projection 20 of the sleeve 5 or enforce this and can be, for example, Ge threaded pins, spring pins or resilient ball thrust pieces.

1, a silencer or alternatively e.g. a blank cartridge device, a compensator, etc. in question. The attachment 2 is either permanently connected to the mounting piece 11, so that the mounting piece 11 is part of the attachment 2, or it can be connected to the mounting piece 11, e.g. screwed to a thread 39 of the mounting piece 11, with a bayonet lock or in other known manner in the art technology on the mounting piece 11 releasably anchored.

Is on run 4 e.g. if a muzzle fire damper is anchored as the muzzle end 3, this can e.g. screwed over a thread 40 formed on the barrel 4 and secured with a lock nut 41. Alternatively, e.g. the mouth end 3 di be formed right on barrel 4.

In one embodiment, the optional thread 39 of the mounting piece 11, the external and internal threads 13, 14 on the extension 8 or sleeve 5 and the optional thread 40 on the barrel 4 are all alike, so that every torque about the axis A for everyone Threads 39, 13, 14, 40 either have an opening or a closing effect. Generates the attachment (e.g. the silencer) 2 due to its structure when firing a shot around the axis A, the threads 39, 13, 14 and 40 can be adjusted in their direction of rotation so that the torque of the attachment 2 acts in their closing direction.

The invention is not limited to the illustrated embodiments, but includes all variants, modifications and combinations that fall within the scope of the appended claims.

Claims

Claims:

1. Device (1) for mounting an attachment (2) at the mouth end (3) of a firearm, which catches at least two diametrical recesses (10) on its outer circumference, in particular in the form of a circumferential groove, comprising

a sleeve (5) which can be pushed onto the mouth end (3) to form an annular space and has an axially normal opening (7),

a mounting piece (11) which is connectable or connected to the attachment (2) and has a substantially tubular extension (12) which can be inserted into the annular space between the mouth ends (3) and sleeve (5) and with the sleeve ( 5) is screwable, as well

An essentially horseshoe-shaped locking element (6), which in the opening (7) of the sleeve (5) between a closed position in which the two legs (8) of the horseshoe sens each with an inwardly directed rib (9) in one of the recesses ( 10) engage, and an open position in which they are free from the recesses (10), is radially displaceable,

wherein in the closed position of the locking element (6) of the extension (12), when it is inserted into the annular space, at its end (16) of end portions (15) of the legs (8) is undershooted.

2. Device according to claim 1, characterized in that the end (16) of the extension (12) tapers and the him facing side of the locking element (6) is complementary to this.

3. Device according to claim 1, characterized in that the end (16) of the extension (12) is stepped and the side of the locking element (6) facing it is designed to be complementary thereto.

4. Device according to one of claims 1 to 3, characterized in that each leg (8) of the locking element (6) on the extension (12) facing away from the rib (9) is formed into an inwardly projecting web (19), wel cher for abutment on a lateral flattening (18) of the mouth end (3).

5. Device according to one of claims 1 to 4, characterized in that the sleeve (5) at its end facing away from the mounting piece (11) has at least one inner projection (20) for support on the outer circumference of the mouth end (3).

6. The device according to claim 5, characterized in that the inner projection (20) is equipped with at least one resilient pressure piece (21).

7. Device according to one of claims 1 to 6, characterized in that the extension (6) has at least one interior projection (22, 23) for support on the outer circumference of the mouth (3).

8. Device according to one of claims 1 to 7, characterized in that the assembly piece (11) in the assembly position development forms an axial stop (28) for the mouth end (3).

9. Device according to one of claims 1 to 8, characterized in that the locking element (6) has at least egg nen in its closed position on the outer periphery of the sleeve (5) projecting handle (29).

10. Device according to one of claims 1 to 9, characterized in that the locking element (6) in the open position with a shoulder on a stop of the sleeve (5) strikes.

11. The device according to claim 10 in conjunction with claim 5 or 6, characterized in that the paragraph through the end wall (33) of a groove (30, 37) in the side facing away from the mounting piece (11) of the locking element (6) and Stop by the end (31) of the inner projection (20) of the sleeve (5) axially parallel penetrating screw (32, 38) is gebil det.

12. The apparatus of claim 10 or 11 each in connection with claim 5 or 6, characterized in that each of the two legs (8) of the locking element (6) each with a guide groove (30, 37) and the inner projection (20) Sleeve (5) with one in the guide groove (30, 37) ge guided pin (32, 38) is equipped.

13. Device according to one of claims 1 to 12, characterized in that one of the two parts locking element (6) and sleeve (5) has at least one catch (35, 36) and the other part has a cooperating spring element, by means of which the locking element (6) can be temporarily locked in the open position relative to the sleeve (5).

14. Device according to one of claims 1 to 13, characterized in that the extension (12) in an axial section (24) has an inner circumferential recess (25) which forms a cavity in the assembly position opposite the mouth end (3).

15. Device according to one of claims 1 to 14, characterized in that the sleeve (5) has at least one, preferably at least two, pressure relief opening (s) distributed over its circumference.