EP3368853A1

EP3368853A1 - Adapter for mounting at least one additional device on a self-loading firearm and self-loading firearm provided therewith

Info

Publication number: EP3368853A1
Application number: EP16794937.9A
Authority: EP
Inventors: Rudi Schatz; Tobias Maier; Wilhelm Fischbach; Frank Kohler; Stefan Doll; Marc Roth
Original assignee: Heckler und Koch GmbH
Current assignee: Heckler und Koch GmbH
Priority date: 2015-10-26
Filing date: 2016-10-26
Publication date: 2018-09-05
Anticipated expiration: 2036-10-26
Also published as: US10921090B2; US20180266789A1; WO2017071807A1; LT3368853T; ES2809551T3; EP3368853B1; DE102015013803A1

Abstract

The invention relates to an adapter (3) for mounting at least one additional device (45) on a self-loading firearm (1), said adapter extending along the length of the weapon and comprising a tube-side section (25) and a housing-side section (35). The adapter is characterised in that it can be atttached to a holding device (79, 89) on the tube (19) or on the housing (4), with one of the two sections (25; 35) thereof, and can be movably mounted on the housing (4) or the tube (19), with the other section (25; 35), by means of a longitudinally mobile guide (96, 97, 109; 177, 179, 181). The invention also relates to a self-loading firearm (1) of an adapter (3) according to one of the claims 1 to 19, a holding device (79, 89) on the tube (19) or housing (4) for attaching the adapter (3), and a floating bearing on the housing (4) or the tube (19), which is designed for the longitudinally mobile guide of the adapter (3).

Description

Adapter for attaching at least one additional device to a self-loading firearm and equipped with this self-loading firearm

Field of the invention

The invention relates to an adapter for a self-loading firearm, which is designed for attachment of at least one additional device and has two extending in the weapon longitudinal direction adapter sections, namely a tube side and a housing-side section.

The invention also relates to a self-loading firearm equipped with such an adapter.

In these documents, positional designations such as "top", "bottom", "front", "rear", etc. always refer to a gun kept in normal shooting position, in which the

Soul axis runs horizontally and the firing takes place forward from the shooter away.

State of the art

Adapters for attaching at least one optional device such as a laser visor, (night) aiming device, optics, illumination device, bipod, grenade launcher or the like to a firearm are known in various designs, including so-called Picatinny rails. The latter often extend in a straight line over the hand guard and / or the weapon housing and are fixed thereto, for example, by fastening means, such as screws.

Alternatively, it is also known to attach an additional device, in particular a sight sight, on an additional mounted on the firearm mounting rail.

Furthermore, weapons housing made of metal and / or plastic are known. DE 10 2013 2008 770 AI shows an assault rifle with a U-shaped forend, which is rigidly connected via an elongated pipe nut to the housing and a Visierträger, which extends over the length of the forend and the housing. The sight support is stiffness-promoting connected to the forearm over its entire length and fixed with its rear end via screws on the housing.

US 5,343,650 Bl shows an adapter rail, which is firmly attached to the closure-carrying housing of an assault rifle and extended forward. At this extension, a hand guard is provided, which surrounds the pipe and the gas removal without contact and two connection yokes on the front rail and at the transition of

Pipe is set in the housing. The adapter rail is designed in several parts at its rear end and can be retrofitted for height adjustment with different suspensions.

The US 2005/0241211 AI shows a modular adapter system for attaching an additional device to an assault rifle. At the top of the gun case, a Picatinny rail is provided, to which another Picatinny rail is attached, to which in turn a two-piece, the tube enclosing handguard is attached. The upper part of the handguard is fixed to the second Picatinny rail and overlaps the pipe in a semicircle. At its bottom are along the overarching part of the

Hand protection grooves provided in the bearing profiles of one as well

Semi-circular lower part of the hand guard can be postponed and attached.

The US 2006/0010748 AI shows a rail system for fixing a

Extra equipment on an assault rifle. The system sees the pipe and the

Weapon case protruding Picatinny rail, which is fixed with its rear end to a longitudinally extending on the weapon housing further Picatinny rail. The tube-side section of the Picatinny rail has a hand guard surrounding the pipe, which is attached to the top of the Picatinny rail. In the area of a pipe nut, the pipe with the closing leading

Weapon housing connects, the tube-side region of the handguard or the rail is attached by two lateral clamps, which via a spring-loaded latching ring on the pipe nut to be locked. The lower part of the hand guard is connected to the upper part via hinges and locking devices.

US 5,590,484 shows a continuous, the housing and tube superior Picatinny rail for attachment of an accessory. An integrated hand guard is provided on the front of the Picatinny rail. The Picatinny rail is intended for the US assault rifle MI 6 and is on one

Pipe holding bush attached to a pipe mount on the front of the housing and to the gas take-off. The rear, extending over the housing part of the Picatinny rail, is neither led laterally attached. The multi-part adapter device is to adapt to thermal changes of the barrel or gun barrel with continuous fire and is therefore not secured in the housing area.

US 6,694,660 Bl shows a handguard system for assault rifles. On the casing of the assault rifle a permanently installed Picatinny rail is provided. Further, a

Handguard on another Picatinny rail provided, which is pushed onto the housing side Picatinny rail and fixed there by vertical screws. The tube-side section surrounds the tube with a tubular hand guard without contact. In the assembled state, a cylindrical pipe holding nut with a smooth outer surface serves the hand guard portion as a transverse system and guide.

US 8,230,634 Bl shows a Picatinny rail with a handpiece provided integrally therewith. The Picatinny rail overlaps the closing housing with a matching to the contour of the housing top gate and is there form-fitting at the top of the housing with fasteners, such as screws set.

A tubular inside of the handguard is from the outer contour of a

Pipe nut out and by means of a clamping piece and two screws, the inside hand protection contour is pressed against the outside contour of the pipe nut. DE 100 36 728 A1 of the same Applicant shows a mounting system for attaching a grenade launcher to the underside of a hand guard or forearm of a rapid-fire rifle. The grenade launcher is movably mounted at its rear end. To attach the grenade launcher, the rapid-fire rifle includes force-absorbing fixed bearing approximately at the level of a gas intake. At the grenade launcher, a force-initiating coupling seismic direction is provided, via which recoil forces are transmitted to the fixed bearing.

DE 103 16 545 A1 of the same Applicant shows an adapter for attaching one or more auxiliary devices to a firearm, in particular one

Automatic rifle. The adapter is fixed to a barrel surrounding the barrel of the firearm, with this fixed or mechanically connectable sleeve. The adapter extends solely over the tube of the firearm and includes a rearwardly extending projection which engages a complementary recess of the housing to rotatably support the adapter on the sleeve.

Finally, DE 10 2005 037 884 B3 of the same Applicant shows an adapter component for receiving add-on parts. The adapter component is provided as a hand guard having on its side surfaces Picatinny rails. The adapter component is in

assembled state on the barrel and the gas take-off mechanism

deferred and fixed by a clamping pin on the sleeve by means of a frictional clamping, so that a movement in the longitudinal direction is excluded. A safety catch engages with a complementary recess on the housing and serves for orientation and alignment of the hand guard during assembly and against rotation.

Task and solution of the invention

Object of the present invention is to provide an alternative adapter and a

Provide firearm with an adapter that is structurally simple and ensures the reliability of at least attached thereto additional device (s).

This object is achieved by the subject-matter of independent claims 1 and 20, respectively. The generic adapter has according to claim 1 thus additionally following

Characteristics: he is in its mounting position with its pipe-side or its housing-side portion of a holding device on the gun barrel or housing fixed, and guided longitudinally movably with its respective non-definable section via a floating bearing on the weapon housing or pipe.

The generic type firearm of claim 20 is characterized in that it is provided with an adapter according to one of claims 1 to 19 and a

Holding device on the weapon tube or housing for fixing the adapter and a counter-profile on the weapon housing or tube to form a movable bearing for a longitudinally movable guide of the adapter has.

The adapter according to the invention and the generic firearm ensure the functionality of at least one additional device attached thereto, in particular a sighting device. If, for example, in continuous fire, the tube gives off heat to the housing and this expands or warps, which could occur especially in plastic housings, or if the tube warps itself thermally, the additional device remains - due to the special adapter storage - of about caused tension largely spared. Is the

Additional equipment, for example, a sight, the Treffpunktlage changed in hot-shot run little or not at all. The longitudinally movable floating bearing compensates for any axial displacements to the fixed bearing.

Preferably, the longitudinal fixing (fixing) of the adapter to the holding device on the pipe, in particular in the vicinity of the pipe nut. In the area of the pipe nut is namely the lowest vibration part of the tube at firing. The tube-side adapter section then surrounds the tube without contact.

Due to the longitudinal displaceability, a stable mounting of an accessory mounted on the adapter, in particular an optic, aiming aid or sighting device, is ensured, regardless of any movements of the closure-guiding device

Weapon housing. The adapter can be provided in several parts. Preferably, however, it is integrally formed and fixed with its tube-side portion and the housing-side portion on the floating bearing on the housing guided longitudinally movable (claim 2). A one-piece design is easy to handle in terms of manufacturing technology and avoids additional components and fastening elements. Since the floating bearing the adapter transversely but

longitudinally movable leads to the housing is one of different

Thermal expansion coefficient of the housing parts (and / or the tube) and the

Optics wearer or the adapter unaffected alignment guaranteed.

Overall, can be on the movable bearing on the housing on the housing to ensure a good shot precision even in continuous fire and hot-shot pipe.

The tube-side portion may be configured as a rail. However, it is preferably provided as a hand guard, which at least partially surrounds the tube and the

Housing-side section at least partially overlaps the housing at its top (claim 3).

This measure avoids additional hand protection. Covering in the sense of the invention means that the housing-side section is formed at least partially complementary to the surface of the housing sections, so that it can be easily pushed onto the housing during assembly and is securely mounted on the housing. Thus, the housing forms an additional guide possibility during assembly and increases the stability.

Preferably, the tube-side portion extends with his handguard in the assembled state along the pipe, approximately from the gas removal to the housing and surrounds the tube without contact (claim 4). This measure provides i.a. sure that

Hand protection in particular of vibrations in the front region of the tube is unaffected, since it is spaced therefrom.

Preferably, the tube side and the housing side portion are at least partially on its upper side and / or its side surfaces with one or more grooves for

Attachment of at least one additional device formed. The tube-side adapter Section may also have such mounting grooves on its underside

(Claim 5).

The introduction of only a few grooves manufacturing technology is simple and

inexpensive. The respective fastening grooves can be tuned to the additional device to be fastened. The other side surfaces can be smooth.

Preferably, the tube side and the housing side adapter portion are at least partially formed on its top and / or side surfaces as a Picatinny rail. For the tube-side adapter section that also applies to its underside (claim 6). This measure increases the flexibility in attaching

different accessories, as they can be variably mounted in different positions on the respective Picatinny rail. Additional lateral Picatinny rails further increase the flexibility, since additional devices can also be optionally mounted in a coronary manner around the respective adapter.

The adapter may be formed as a straight horizontal rail arranged.

Preferably, however, the tube-side section passes in a step-like manner into the housing-side section, with lateral bridge sections connecting the two sections to each other in the step area (claim 7). Such, in particular symmetrical

Bridge construction of the adapter ensures a stable mounting of the optics or sighting device mounted on the adapter. A step-like training, which increases towards the weapon housing, in particular weapon-specific designs, like an assault rifle, fair, such as the rifle G36 of the Applicant.

Preferably, one of the two adapter sections comprise on both sides passages for the introduction of fastening means, in particular screws and / or bolts (claim 8). The passages may be formed as recesses, recesses and / or bores. The fasteners are introduced there in a known manner. For this example, spring-loaded bolts, pins or screws may be provided or other suitable fastening means. In the case of screws or grub screws they can engage on the opposite side in a known manner in a counter-thread provided there. Preferably, one and / or both adapter sections are provided with one or more, in particular lateral recess or opening (claim 9), which extend, for example, rectangular or oval. Also, they can be called so-called

"Keyholes" be trained. This allows for ventilation of the pipe and in particular a heat dissipation from the pipe to the outside after firing. Also can be attached here an additional device or a target help.

Preferably, one and / or both comprise adapter sections each at its rear side at least one guide element for guiding, centering and securing the adapter when mounted on the firearm (claim 10). The guide element may in particular be designed as a protruding extension, nose, pin or the like.

Preferably, the extension on the housing-side section as

Dovetail profile formed (claim 1 1). The dovetail profile is used to optimize the floating bearing. Especially in the case that the

Dovetail profile is provided on the housing-side portion of the adapter, which engages over the weapon housing, this dovetail profile ensures a transversal, but longitudinally movable movement of the adapter relative to the weapon housing. In this case, the dovetail guide is the only contact surface between the adapter and the closure-carrying weapon housing and is preferably provided to reduce elastic movements on the housing as small or as small as possible.

Preferably, the housing-side portion comprises on both sides in the longitudinal direction extending recesses for actuating a pass-through lever (claim 12). Of the

Overstretching of the housing-side adapter section over the closure leading

Weapon housing is preferably provided such that in the housing-side portion of the adapter bilaterally symmetrical recesses for actuating a loading lever of the firearm are provided. With this measure, on the one hand, the adapter can overlap the housing far, which in turn increases stabilization of the adapter and facilitates its assembly and on the other hand allows the functionality of

Through lever and the operability of all essential elements. Preferably, the housing-side portion comprises one or more recesses for supporting at least one adjustable sighting device, in particular a folding screed arrangement and / or folding grain arrangement (claim 13). Such a recess is particularly preferably provided at the front and rear ends of either a Picatinny rail or a rail without grooves to provide a sufficiently long line of sight. Also, recesses can easily be machined out of production engineering. Furthermore, such a folding sighting can be folded when attaching an additional device, so that its installation is not hindered. The adapter can completely cover the pipe in the area of the hand guard and be formed integrally closed.

Preferably, the adapter on the tube-side portion comprises a cover pivotable about an axis of hinge between an opening and closing position (claim 14). This measure allows easy access for disassembly, inspection or cleaning of a gas piston and a piston rod of a gas pressure loading mechanism. The lid may be pivotally mounted on a hinge pin with corresponding recesses on the lower part of the tube-side portion. Preferably, the adapter comprises an insert for its stabilization and reinforcement, which can be used and fixed in particular between the bridge sections (claim 15).

The Applicant reserves the right to request independent protection for this use.

With this measure, the stability of the adapter can be increased. The insert part can also extend beyond the bridge sections. However, in order not to increase the weight of the adapter too much, the insert is preferably in the range of

Bridge sections provided. In a simple embodiment, the insert as

Be designed block. Preferably, the insert comprises an elastic element, in particular with a latching nose for fixing the lid (claim 16). When mounting the insert between the bridge sections, the cover may be designed so that it is closed in the direction of the housing-side section and thereby simply pressed by the user via the latch, so that it is biased by the elastic member held in its locked position. When opening the lid this can be easily opened with a slight counter pressure against the locking lug upwards.

Preferably, the elastic element is integrally provided with the insert as a form spring (claim 17). Alternatively, it may also be provided as a separate component which is correspondingly mounted on the insert. A one-piece design can be produced easily and inexpensively. The insert part may be off

Be injected plastic, in which case the integrated spring can be made of plastic. Overall, however, the shape and choice of material of the insert and its spring can be configured arbitrarily suitable.

Preferably, the insert may comprise a longitudinally extending gas piston guide and / or a bearing for a gas piston spring (claim 18). The insert can be defined in the area of the bridge sections. For this purpose, he may, for example, have passages which are aligned in particular to passages in the adapter, and there over transverse pins or transverse bolts or possibly also screws or other suitable

Fix fasteners.

Preferably, the insert comprises on its rear side at least one guide element for guiding and centering on the housing during assembly (claim 19). This measure allows for easy installation and ensures exact positioning of the adapter and the gas piston guide optionally provided therein. The guide element may be provided, for example, as a guide lug or other extension and then protrudes when sliding and locking the adapter in the direction of the housing and is in mounting with a recess on the front of the housing into engagement.

If a gas piston guide is provided, the guide lugs or the guide element ensure that the gas piston guide is extended in the housing. Preferably, in the firearm, the holding device for fixing the adapter as a sleeve can be fixed to the tube, in particular in the region of the pipe nut, or as a pipe nut integrally extending sleeve-like portion provided (claim 21). A sleeve can be firmly fixed to the pipe, in particular at the rear region in the vicinity of the pipe nut. For this purpose, for example, a transverse groove can be provided on the pipe so that the pipe sleeve can be fixed to the barrel via a tangential pin or bolt.

The sleeve may have on its upper side transverse grooves for attachment of the fixed bearing of the adapter. Alternatively, the holding device may be provided as an elongated pipe nut, which is extended over a sleeve-shaped portion. Then encircling annular grooves may be provided in the sleeve portion, which allow a fixing of the adapter via transverse screws in the longitudinal direction positively and in the transverse direction non-positively.

Preferably, at least one counter profile for receiving at least one of the guide elements of the adapter and / or insert element is provided on the housing or on the tube (claim 22). A complementary counter profile facilitates the orientation and orientation of the respective guide elements and thus of the adapter

or the insert part.

Particularly preferably, the mating profile is complementary to the dovetail profile of the extension formed on the adapter for longitudinally movable storage in the manner of a floating bearing.

A dovetail profile allows for a connection with only a small amount

Interface. In order to further reduce the contact points in the dovetail guide, the mating profile can also be provided as a separate part, which is fastened to the housing in a suitable manner. The counter profile can be made of plastic or of metal or a plastic metal composite part. The mating profile can be made spherical, to reduce the points of contact, what further

Can reduce housing influences. The mating profile may have a wedge-shaped or slit-like configuration with which the dovetail profile of the adapter engages, so that an almost linear guide further reduces the contact surfaces.

figure description

Embodiments of the invention are explained in more detail below with reference to the accompanying schematic drawings. Show:

Figure 1 is a self-loading firearm in side view.

2a is a perspective detail view of the adapter of Figure 1 in a view obliquely forward above. and

2b shows a representation of an alternative adapter;

FIG. 3 shows a tube for the self-loading firearm from FIG. 1 in side view; FIG. FIG. 4a shows the tube from FIG. 3 with additional elements; FIG.

Fig. 4b shows a tube in an alternative embodiment in side view;

5 shows a partial section of the tube of Figure 4a in a perspective view obliquely from the front with a fixed sleeve ..;

6a and 6b are perspective views of a weapon housing portion;

Fig. 7 is a plan view of the housing-side portion of the adapter from below;

8 shows a view of a partial section of the adapter mounted on the self-loading firearm from behind; FIG. 9a shows the self-loading firearm from FIG. 1 obliquely from the top front and FIG. 9b shows a longitudinal section through the self-loading firearm from FIG. 1;

FIG. 10a shows a longitudinal section of the self-loading firearm from FIG. 9b with the cutting plane offset outwards; FIG.

10b is a detail view of a front portion of the self-loading firearm of Figure 1 in a side view. Fig. 1 1 is an enlarged partial section of the longitudinal sectional view of Fig. 9b;

Figures 12a and b are perspective views of a lid of the adapter in two alternative embodiments; Fig. 13a and b embodiments of the adapter with inserted lid in

perspective views obliquely from the top front;

FIG. 14 shows the assault rifle from FIG. 1 with the lid open obliquely from the top front; FIG. Fig. 15a is a longitudinal section through an insert and Fig. 15b and c two perspective

Views of the insert at an angle from the back left and right;

15d shows a partial sectional view of the insert part from FIGS. 15a to c in plan view and FIG. 15e shows a perspective view of the insert obliquely from behind;

16 and 17 are each a partial section of the housing in a perspective view with two alternative embodiments of the counter-profile obliquely from the top front.

The structure of the adapter 3 according to the invention will first be explained with reference to FIGS. 1 and 2. Fig. 1 shows a self-loading firearm 1 with a mounted on it

Adapter 3 according to the invention and Fig. 2, the adapter 3 in isolation. The assembly of the adapter 3 to the self-loading firearm 1 and the associated relevant elements will be explained with reference to FIGS. 2 to 12b. FIGS. 13 a to 17 show further details of the adapter 3.

Fig. 1 shows a side view of a self-loading firearm 1, namely the known assault rifle G36 of the applicant. The self-loading firearm 1 includes a

according to the invention adapter 3 and a housing 4, at the rear end of a pivotable shoulder support 5 is provided. At the bottom of the housing 4, a handle 7 is fixed, at the upper end of a known Feuerwahl / safety lever 9 is provided. Before the handle 7 a trigger 1 1 is arranged in a trigger guard 13. Adjacent thereto, a magazine holder 15 is provided. Further, a loading lever 17 is provided for loading and closing the closure on the housing 4. Furthermore, the self-loading firearm comprises a tube 19, on which a receptacle 21 for a bayonet or a grenade launcher (not shown) is provided, and which has a muzzle fire damper 23 at its mouth side.

The adapter 3 is provided on the self-loading firearm 1 for attachment of at least one additional device, such as a Dioptervisierung, a

Laser rangefinder, lighting device, a bipod, etc. The adapter 3 comprises a tube-side portion 25 and a housing-side portion 35th

The tube-side portion 25 of the adapter 3 surrounds the tube 19. This section 25 comprises at its top and on its underside each have a Picatinny rail 27, 29 and both sides elongated openings 31 and so-called "Keyholes" 32, the one

Heat dissipation and cooling or the attachment of aiming serve.

The tube-side portion 25 of the adapter 3 is via a bridge portion 33 at its upper rear end in a stepwise manner in the housing-side portion 35 on. The housing-side section 35 extends in the longitudinal direction of the weapon and has a Picatinny rail 39 on its upper side. Alternatively, this rail section may also have no or only a few grooves 38 and webs. At the front end of the Picatinny- rail 39 above the bridge portion 33, a hinged grain assembly 41 is provided, which pivot as needed via a spring detent mechanism, not shown, as shown vertically upwards or can be moved forward. Approximately in the region of the bridge section 33, two passages 51 are provided for the use of fastening means, such as screws or bolts 161, for fixing the adapter 3 to a holding device on the tube 19. Below the Picatinny- rail 39 approximately at the level of the loading lever 17 extend on both sides in the longitudinal direction

Recesses 37, which allow actuation of the feed lever 17.

At the rear end of the housing-side portion 35 of the adapter 3, an optical sight 45 is fixed to the Picatinny rail 39 by means of bolts or tangential pins 47, alternatively clamping bolts or other suitable fastening means may be provided. Below the optical sight 45, a bearing insert 43 is provided for a further sighting element, not shown here, such as a folding rear sight.

2a and b show the adapter 3 and differ in that in Fig. 2a, the top of the housing-side portion 35 and the rail 29 of the underside of the tube-side portion 25 of the adapter are provided as Picatinny rails 29, 39. In the embodiment according to FIG. 2 b, the two rail sections 29 and 39 each have only two transverse grooves 38 at the rear end of the rail section 39

Attachment of an additional device. In addition, in the embodiment according to FIG. 2 a, the "keyholes" 32 are provided.

At the front end of the housing-side portion 35 is a recess or

Breakthrough 40 in the Picatinny rail 39 for receiving a bearing (see Fig. 15a to 15e) provided for the collapsible grain assembly 41. Furthermore, enforce two

Passages or holes 42, the adapter 3 for the storage of

Klappkorns 41. At the rear end of the housing-side portion 35, a recess 46 is provided for a Kimmen arrangement 48, and two lateral parallel passages 44 for receiving a bearing 43 of the folding Kimmen- arrangement 48. The bearing 43 can be, for example, laterally insert and secure with suitable means.

At the front lower side of the housing-side portion 35 in the region of

Bridge section 33 are two passages 51 for tangential pins or

Fixing bolts or dowel pins 161 or other suitable fastening means for fastening the adapter 3 to a tube-side holding device, such as a sleeve 79th or a sleeve portion 89 (see Figures 4a and 4b, 9a and 10a). Above the passages 51 extend in the longitudinal direction of the housing-side portion 35 in the interior two parallel rails 50 (see Fig. 2b), which serve for the insertion and fixing of an insert part (see Fig. 13a, b and 15a-d).

At the rear end of the tube-side portion 25 of the adapter 3 is a parallel

Extension or extension 54 is provided, which serves for centering of the adapter 3 when mounted on the housing 4 (see Fig. 6a and b). On the upper front side of the tube-side portion 25 of the adapter 3 are further provided on both sides passages 49 for receiving a hinge pin or pin 1 19, which receives the lid 1 10 pivotally mounted on the adapter 3 (see Fig .. 12a to 14). The tube-side portion 25 surrounds the tube 19 U-shaped and fully inserted with the lid 110.

FIG. 3 shows a side view of the pipe 19. Subsequent to the mouth 53, an abutment portion 55 is provided for fixing the muzzle fire damper 23, for example via a pin or clamping bolt (not shown). Distanced in the direction of the housing, the tube 19 comprises a bearing portion 57, on the underside of a groove for fixing the bayonet or Gewehrgranatwerferanschlusses 21, for example via a Tangentialstift or pressure pin. In approximately the middle of the tube 19, a further cylindrical bearing portion 63 for attachment of a gas take-off 62 (see Fig. 4a and b) is provided. At the bottom here as well a groove for fixing the gas take-off 62 is provided by means of a Tangentialstiftes or bolt and at the rear end of the

Bearing portion 63 a collar 65 to which the gas removal 62 is applied. Another cylindrical bearing portion 66 is provided for a sleeve 79 for attachment of the adapter 3 to the tube 19. Again, in the bottom of the tube 19, a groove 67 for

Recording a tangential pin for fixing the sleeve 79 is provided. At the rear end of the bearing portion 66, a pipe collar 69 connects. The housing 4 facing the end of the tube is provided with relief grooves 71 and intermediate webs 73 which extend parallel to the axis of the pipe 19.

In Fig. 4a, the tube 19 is shown in FIG. 3, each with attached muzzle flash damper 23, bayonet or Gewehrgranatwerferanschluss 21, which is defined by a Tangentialstift or bolt 75, and the gas take-off 62, the over a Tangentialstift 77 is fixed to the tube 19. At the rear end, a sleeve 79 is fixed on the tube 19 via a tangential pin 81. The sleeve 79 comprises at its top two transversely to the tube 19 extending grooves or recesses 83 and 83, where the adapter can be set via tangential pins or bolts.

In addition, a tube nut 85 surrounds the barrel 19 and its tube collar 69th Die

Pipe nut 85 is provided separately from the sleeve 79 and has the sleeve 79 towards a section with a tapered diameter.

Fig. 4b shows an alternative embodiment with an elongated tube nut 87, at the mouth-side end of a sleeve portion 89 is integrally formed. The sleeve portion 89 comprises two circumferential annular grooves 90 which are provided for fixing the adapter 3 via tangential pins.

The sleeve 79 (FIG. 4 a) and the sleeve portion 89 (FIG. 4 b) are interspersed in each case by bores or round openings, which serve for heat dissipation. In the illustration according to FIG. 5, the sleeve 79 is fixed on the pipe 19 via the tangential pin 91.

Before the adapter 3 can be placed on the tube 19 and the housing 4, first the tube 19 and the housing are connected together. For this purpose, a tube receptacle 99 (cf., Fig. 6a and b) is provided with an external thread on its outer side on the housing section 4. The tube 19 is introduced with its the discharge grooves 71 and webs 73 comprehensive end portion in the pipe receptacle 99 and screwed on a provided on the inside of the respective pipe nut 85, 87 internal thread (not shown) with the external thread of the pipe receptacle 99 and set. In this case, the pipe nut 85 and the pipe nut 87 rests with the extended sleeve portion on the pipe collar 69 and sets the tube 19 against the pipe receptacle 99 firmly. Above the pipe receiving 99 is a transverse to the pipe 19 extending

Orientierungsausnehmung 103 for receiving extensions on the adapter or its insert part 123 (extension 143, see Fig. 15a-d) provided. Therein is also in the area 175 of the gas piston 159 (see Fig. 9b, 10a, 1 1) guided. Below the tube receptacle 99, a further orientation recess 107 for receiving the extension 54 at the lower rear end of the tube-side portion 25 of the adapter 3 is provided. This recess 107 is located in an approximately triangular extension on the underside of the housing 4, at the lower bolt, the front of a magazine holder 15 is fastened. The upper pin 106 is due to manufacturing technology (originally served to accommodate the hand guard) and has no more function.

At the top of the housing 4a, a longitudinally extending recess 101 is provided, in which the closure carrier is guided. At the rear upper side of the housing section 4a, a base 96 with a dovetail profile is provided adjacent to the recess 101. This is followed by a manufacturing recess 98, which is finally delimited by a dovetail-shaped counter profile 97. When mounting the adapter 3 on the self-loading firearm 1, the housing-side section 35 of the adapter 3 with a dovetail-shaped profile 109 at its rear end (see Fig .. 7) first pushed onto the base 96 and then continued until the dovetail profile 109 in Dovetail profile of the counter-profile 97 is guided longitudinally movable in the manner of a floating bearing. Due to the two-sided dovetail profile so that the housing-side portion 35 and thus the adapter 3 is secured against lateral movements and movements up or down, but longitudinally movably guided. This allows any changes in the housing, for example, by thermal effects, or other deformations of the housing 4 or housing portion 4a compensate in the longitudinal direction. At the rear end of the housing portion 4 a hinge eyes 93 are laterally formed, on which the shoulder support 5 can be fixed or laterally hinged. Laying down the shoulder support is on the opposite side of the housing 4a (see Fig. 6b) provided an eyelet in which the shoulder support via a bolt or dowel pin or similar fastening means can be fastened.

Fig. 7 shows a view of the underside of the housing-side portion 35 of the adapter 3 from above. Therein, the recesses 37, which extend on both sides of the rail section 27, are shown for guiding the pass-through lever 17. At the rear end of the housing side Section 35 are the extensions 109 with their dovetail profile, which is provided for engagement with the counter-profile or the guide 97 on the housing 4a. This is shown in Fig. 8, which show the engagement of the housing-side dovetail profile with the counter-profile on the base 97 in a view from behind. At the top of partial sections of the folding Kimmenanordnung 43 and placed on the adapter Dioptervisierung 45 are shown. The housing-side portion 35 surrounds the housing portion 4a approximately to the level of the eyelet for securing the shoulder support 5. Fig. 9 to 1 1 show different views of the adapter 3 in the mounted state on the self-loading firearm 1 in the embodiment with the sleeve section 89th extended pipe nut 87, which is bolted to the pipe receptacle 99 and fixed. A cartridge (not shown) inserted into a cartridge chamber 153 is triggered by the firing pin 155 upon actuation of the known trigger mechanism. The tube 19 includes a bore 157 through which propellant gas is diverted into the gas take-off 62 to actuate the gas pressure relieving mechanism known from the G36 assault rifle of the applicant of the same name. In this case, a part of the liberated at launch of a cartridge propellant gas, which is diverted by the gas decrease acts on the gas piston rod 159, which in turn acts on the closure and this drives to eject an empty cartridge case and for feeding a new cartridge to the rear. The gas piston rod 159 is partially guided in the tube-side portion 25 of the adapter 3 and by the insert part 123 (see Fig. 15a-c) and in the portion 175 of the housing 4a. 10a and 10b show the tangential pins 161, with which the adapter 3 is fixed in the annular grooves 90 (see Fig. 10a). In the embodiment with the separate sleeve 79, the tangential pins 161 respectively fix the sleeve 79 fixed to the tube 19 in its transverse grooves 83 (cf., FIGS. 4a and 5). Fig. 11 shows an enlarged detail view of the sectional view of Fig. 9b.

12a and b each show a cover 110 for use in the tube-side section 25 of the adapter 3, in order to allow access to the gas piston rod 159 and its removal or cleaning. The two embodiments of the lid 110 differ in the configuration of the upper-side rail 113, which is smooth in the embodiment of FIG. 12a and in the embodiment of FIG. 12b as a Picatinny rail 113b. The lid 110 includes each on both sides extending in the longitudinal direction provided as slots openings 112 and provided at its front lower end on both sides passages 115 for receiving a hinge pin 119 to be pivotally mounted on the adapter 3. The cover 110 is initially provided in a U-shaped cross-section and merges into a V-shape.

On the outside of the lid, longitudinal webs 117, which are provided for resting on counter webs 165 (cf., FIGS. 2a and 2b) on the upper side of the tube-side section 25 of the adapter 3, extend on each of their lower ends. FIGS. 13a and 13b respectively show the adapter 3 with the lid 110 inserted, the hinge pin 119 penetrating both the bores or passages 49 in the tube-side section 25 and the passages 115 in the lid 110 and pivotally fixing the latter. At the lower rear end of the tube-side portion 25, the extension 54 for receiving in the recess 107 (see Fig. 6a and 6b) is provided in the housing portion 4a.

At the rear end of the housing-side portion 35 of the adapter 3, the bearing insert 121 is inserted in Fig. 13b. On the top, the grain 41 can be seen in the folded state at the front end of the tube-side portion in the recess 40 in the Picatinny rail 39. Below the folding grain is an insert 123 (see Fig. 15a to 15d) is inserted and serves with its upper side as a bearing for the folding grain 41. Fig. 14 shows the self-loading firearm 1 with opened lid 110 in the embodiment with Picatinny rails. Within the released recess below the lid 110, the gas piston rod 159 with the surrounding coil spring 167 can be seen. In this position, the gas piston rod 159 and / or the gas piston rod spring 167 may be cleaned or optionally removed.

15a to d show various detailed views of the insert 123. This has essentially three functions: First, it serves to fix the lid 110 in his Secondly, it serves as a gas piston rod guide and thirdly serves to stabilize the bridge sections 33 and thus the adapter 3. In detail:

FIG. 15 a shows a longitudinal sectional view of the insert 123. At its front side, the insert 123 comprises a form spring 125, which is provided on the insert part 123 elastically via recesses 129 and 131. In the closed position of the hinged lid 110, this engages with its rear upper side on a transverse to the form of spring 125 projecting transverse form spring-locking lip or nose 127. In this position, the hinged lid 110 is locked and is held under tension. Due to its shape, the insert part may preferably be formed or molded in one piece from plastic so that the shaped spring 125 is integrated into the insert part 123, for example as a plastic injection-molded part. Also alternative forms of the insert part and its form spring 125 as well as different materials, for example metal or metal plastic composites are usable. Also, the form of spring 125 can be formed as a separate component and then attach to the insert 123 via suitable fasteners.

In the assembled state, the insert part 123 can be fastened at the front upper end of the housing-side section 35 of the adapter 3 by means of transverse pins or transverse bolts, which can be sprung, for example, for easy assembly and disassembly. The pins 149 (see Fig. 9a) penetrate with pin holes or passages 34 on the adapter 3 aligned pin holes or holes 147 on the insert part 123. Above the pin holes or recesses 147 extends approximately centrally in the longitudinal direction of the insert a web 137, the two-sided recesses 135 limited production-related, to make the insert 123 easier to design. At the front upper end of the longitudinal web 137, an attachment 133 is provided, which extends approximately to the form of spring 125, is integrally formed and forms an abutment for the folding grain 41 at its top. Therein, a bolt spring construction, not shown, is provided for locking the folding grain in its erected and folded position.

At the rear end of the longitudinal web 137, the insert extends saddle-shaped and stepped in a rearwardly extending flat, approximately rectangular longitudinal section 141. Within this section 141, a longitudinally extending piston rod guide 169 for guiding the gas piston rod 159 is provided approximately in the center (see Fig. 9b, 10a and 11). At its front end facing the gas take-off 62, the gas piston rod guide 169 tapers to form an abutment 171 for supporting a gas piston rod spring 173 (compare FIGS. 9a, 10a and 11). At the rear end of the insert 123, two guide lugs 143 for centering the insert and the gas piston rod guide 169 are arranged projecting in the direction of the housing 4. When pushing and locking the adapter 3 onto the closure-guiding weapon housing 4, the guide lugs 143 engage with the orientation recess 103 (compare FIGS. 6a and 6b) on the front side of the housing 4 above the tube receptacle 99. Thus, the gas piston rod guide 169 with an extension of the gas piston rod guide 175 in the housing 4 center each other and are aligned. Recesses 145 are provided on the underside of the insert part 123 as semicircular transverse grooves extending transversely to the insert part 123. When fixing the adapter to the sleeve 79 or the sleeve extension 89 to the tube nut 87 (see Fig. 4a and b and 5) by means of tangential and / or transverse screws (see Fig. 1 1) penetrate the tangential pins or transverse screws 49 also the semicircular transverse grooves 145. In the case of transverse screws 49, these lie with their heads on one

Side of the adapter 3 and are mounted in threaded portions not shown in metal frames on the other side of the adapter 3, so that when tightening the transverse screws 49 of the adapter 3 is positively and non-positively determined via the transverse grooves 83 on the sleeve or the circumferential annular grooves 90 and fix it to the pipe nut 87 via a clamp between the housing 4 and the adapter 3 and the sleeve 79 or the sleeve extension 49.

Fig. 15d shows a cross-sectional view of the insert 123 from above, in section through the front spring-loaded transverse pin 149, which is biased by a coil spring 151 to the outside. When inserting the insert 123 of this embodiment, the front cross-loaded transverse bolt 149 can be mounted in its inserted position in the adapter housing 3. Figures 16 and 17 show partial perspective views of the housing 4a. At the front upper end of the housing portion 4a, a base 96 is provided with counter-profile, over which the dovetail profile 109 is pushed during its assembly and then slides over the subsequent approximately rectangular recess 98. In the embodiments according to FIGS. 16 and 17, instead of the integral non-locating counterprofile 97 from FIGS. 6a and 6b, the non-locating counter-profile 177, 179 is provided as a separate part. This may be made of metal or metal plastic composite parts and fastened in a suitable manner in or on the housing 4a. Alternatively, this separate part can also be bonded to the housing 4.

The floating bearing counter-profile 177 here also includes a counter-profile for complementary engagement with the dovetail guide 109. Here, the contact surfaces of floating bearing Gegenpro file 177, 179 executed spherical to keep the contact surfaces and thus the mechanical transmission moments as low as possible. In the embodiment according to FIG. 16, the separate part 177 penetrates in each case two approximately V-shaped or wedge-like transverse grooves 179 which extend approximately centrally from the upper side over the entire width of the non-locating counter-profile 177. In the embodiment according to FIG. 17, the transverse groove 181 is slit-shaped and likewise extends approximately in the middle of the non-locating counter-profile 179 over its entire width. The plant of the dovetail guide 109 in approximately line-shaped, so that the contact surface is reduced overall.

Claims

claims

An adapter (3) adapted to attach at least one auxiliary device (45) to a self-loading firearm (1) extending in the longitudinal direction of the weapon and having a tube-side (25) and a housing-side (35) section,

characterized in that

- It with one of its two sections (25; 35) on a holding device (79, 89) on the tube (19) or on the housing (4) can be fixed, and

- with the other portion (25; 35) on the housing (4) or tube (19) by means of a longitudinally movable guide (96, 97, 109, 177, 179, 181) is movably storable.

2. Adapter (3) according to claim 1, in particular one-piece adapter, characterized in that it can be fixed longitudinally displaceable with its tube-side portion (25) on the tube (19) and with its housing-side portion (35) on the housing (4).

3. Adapter (3) according to claim 1 or 2, characterized in that the tube-side portion (25) surrounds the tube (19) at least partially as a handguard and / or the housing-side portion (35) at least partially the housing (4) at the Top overlaps.

4. Adapter (3) according to claim 3, characterized in that the tube-side

Section (25) after assembly extends along the pipe (19) from about a gas decrease to the housing (4) and surrounds the tube (19) without contact.

5. Adapter (3) according to one of the preceding claims, characterized in that one or both adapter sections (25; 35) at least partially on its upper side and / or at least one of the two side surfaces one or more grooves for

Attachment of at least one additional device (45) and / or the underside of the tube-side adapter portion (25) is also provided with at least one mounting groove.

6. Adapter (3) according to one of the preceding claims, characterized in that one or both adapter portions (25; 35) are at least partially formed on its upper side and / or at least one of its two side surfaces as a Picatinnyschiene (27, 29) and / or the underside of the tube-side adapter portion (25) is at least partially formed as a Picatinnyschiene (39).

7. Adapter (3) according to any one of the preceding claims, characterized in that the tube-side section (25) merges stepwise into the housing-side section (35), wherein in the step region lateral bridge sections (33), the two sections (25, 35) interconnect ,

8. Adapter (3) according to one of the preceding claims, characterized in that one or both adapter sections (25; 35) on both sides passages (34, 42, 49, 51) for the introduction of fastening means (36, 49), in particular screws or bolts.

9. Adapter (3) according to one of the preceding claims, characterized in that one or both adapter sections (25, 35) have one or more, in particular lateral, recesses or openings (31, 32).

10. Adapter (3) according to one of the preceding claims, characterized in that the tube-side portion (25) and / or the housing-side portion (35) at its

Rear each have at least one guide element (54, 109) for guiding, centering and securing the adapter (3) when mounted on the firearm (1), which in particular as a protruding extension (54, 109) is formed.

1 1. Adapter (3) according to claim 10, characterized in that the

Extension (109) on the housing-side portion (35) is designed as a dovetail profile.

12. Adapter (3) according to any one of the preceding claims, characterized in that the housing-side portion (35) extending on both sides in the longitudinal direction

Having recesses (37) for actuating a pass-through lever (17).

13. Adapter (3) according to any one of the preceding claims, characterized in that the housing-side portion (35) has one or more recesses (40, 46) for supporting at least one adjustable sighting device, in particular a Klappkimmen- arrangement (43) and / or Folding grain arrangement (41) includes.

14. Adapter (3) according to any one of the preceding claims, characterized in that it has at its tubular portion (25) one between an opening and

Closed position about a hinge axis (119) pivotable lid (110).

15. Adapter (3) according to any one of the preceding claims, characterized in that it comprises an insert (123) for stabilizing and reinforcing the adapter (3), which is insertable and fixable between the bridge sections (33).

16. adapter (3) according to claim 14 and 15, characterized in that the insert (123) has an elastic element (125) with a latching nose (127) for fixing the lid

(100).

17. Adapter (3) according to claim 16, characterized in that the elastic element (125) with the insert part (123) is provided as a molded spring in one piece or as a separate component.

18. Adapter (3) according to one of claims 15 to 17, characterized in that the insert (123) comprises a longitudinally extending gas piston rod guide (169) and / or a bearing (171) for a gas piston rod spring (173).

19. Adapter (3) according to one of claims 15 to 18, characterized in that the insert (123) on its rear side comprises at least one guide element (143) for guiding and centering on the housing (4) during assembly.

20. Self-loading firearm (1) with

- An adapter (3) according to any one of claims 1 to 19,

- A holding device (79, 89) on the tube (19) or housing (4) for fixing the adapter (3), as well - A floating bearing on the housing (4) or tube (19) which is designed for longitudinally movable guide of the adapter (3).

21. firearm (1) according to claim 20, wherein the holding device as a tube (79) fixable sleeve (79), in particular in the region of the pipe nut (85), or as a pipe nut (87) integrally extending sleeve-like portion (89 ) is provided.

22. firearm (1) according to claim 20 or 21, characterized in that they on the housing (4) at least one counter-profile (96, 97, 103, 107) for receiving at least one of the guide elements (54, 109, 143) of the adapter ( 3) and / or insert element (123).

23. firearm (1) according to claim 22, characterized in that the

Counter profile (96, 97) complementary to the dovetail profile of the extension (109) is designed for longitudinally movable storage in the manner of a floating bearing.