RU2521853C1 - Quick-release bracket for extra gadgets of kalashnikov automatic gun (versions) - Google Patents

Abstract

FIELD: weapons and ammunition.SUBSTANCE: proposed bracket is available in two versions. in compliance with first version, this bracket is made of steel sheet shaped to U-like frame with flange to support plates and one or two pairs of support plates arranged at 3-10 degrees to each other. Said plates have front, rear and bottom surface resting on gun structural elements. Their rigidly fixe nuts are fitted at plates and aligned with gun sight leaf mounting holes. They have radial grooves at end surfaces to lock fastening screws to be fitted in said nuts and having spring-loaded retainers. Said bracket has two fastening screws. In compliance with second version, said bracket has three fastening screws. Third screw secures the second pair of fastening plates at extra support element made of light alloy. This insert is composed of split or solid parallelepiped with cylindrical slots at top and bottom lateral surfaces. It is fitted at the gun between barrel, gas duct and gas pipe and locked by gas pipe end thrust or extra screw.EFFECT: higher efficiency owing to easy and fast mounting of light collimator sights and heavy optical sights.2 cl, 14 dwg

Description

The invention relates to small arms, namely, devices for attaching additional devices to Kalashnikovs (AK).

A well-known bracket for lateral mounting of additional devices on the left side of Kalashnikov assault rifles having the Swallow Tail bar (Side mount http://www.npzoptics.ru/catalog/kronshtejny_dlya_krepleniya_pricelov/ for optical, collimator, accurate sights for Saiga, Vepr and Tigr ( AK)).

The disadvantage of the side brackets is the relatively large weight, dimensions and the inability to fold the butt when the scope is attached.

It is known that sights are mounted on the Picatinny rail mounted on the receiver lid - AK-12 (AK-12 photo dokwar.ru/photo/specluzhby/6).

The disadvantages of this mount are the increase in size and weight of the machine and the inability to mount for models that do not have Picatinny rail on the receiver cover.

It is known to mount sights on the lid of a gas tube lining (RU 52470 - utility model patent) having a Picatinny rail on top.

The disadvantage of this mount is the unstable position of the lining of the gas tube of Kalashnikov assault rifles, which leads to displacements of the sight fixed to it during firing and the inability to use a regular open sight with an additional sight mounted on the cover.

Known devices for installing collimator sights on Kalashnikov assault rifles: (http://atteroarms.com/optic-mounts.html - bracket for installing a collimator sight on AK by replacing the aiming plate; Bravo mount, Rail mount - for various types of collimator sights, manufactured by Attero Arms USA;

http://www.samson-mfg.com/ar-15_html/product/AK-RSR1.html;

http://bnas.ru/post-2290 - with the help of a bracket installed instead of the standard sighting strip and fastened to it with an axis or screws in the holes for mounting the sighting plate and a screw in the additional part instead of the dismounted spring of the sighting plate or on an additional part on the cover receiver

The disadvantages of such devices is that when the bracket is installed, the standard aiming strip is removed and aiming at long distances occurs without distance corrections. Also, mounting / dismounting the bracket requires special tools and takes a lot of time, and the screws used in the construction without clamps when shooting have the ability to unscrew. A well-known universal modular attachment system for equipment (quad) CAA Tactical for AK (http://e-guns.com.ua/universalnaya-modulnaya-sistema-krepleniya-oborudovaniya-bkvadreilb-caa-tactical-dlya-ak-47akmak-74- splav-6061-t6-p-476.html), made of aluminum alloy, mounted on the machine in place of a standard forend and additional clips in the front and rear. The system has several Picatinny rails located on four sides and allowing you to install various sights and additional equipment on them.

The disadvantages of this system are the need to replace the standard forend of the machine and the associated ergonomic inconvenience when using the system at low and high temperatures; the presence of a large number of screw connections; heavy weight and the need for a tool for mounting the system on AK.

It is known to fasten the Picatinny rail to the AK gas outlet (http://otvaga2004.mybb.ru/viewtopic.php?id=506&p=27) p. 809 2012-11-10 19:59:38, which is a bracket having a split cylindrical part, the inner diameter of which corresponds to the diameter of the AK gas outlet pipe, and the section corresponds to the thickness of the gas outlet neck, and the Picatinny rail, made as a single unit with the side wall of the cylindrical parts directed along the axis of the cylindrical part. On the side wall of the cylindrical part opposite the section, there are fixing screws, the stop of which in the gas outlet pipe, the bracket is fixed on the gas outlet.

The disadvantages of this bracket are the unreliability of the mount due to the possible unscrewing of the mounting screws from vibrations when firing, the need to dismantle the bracket to remove the gas tube when cleaning the weapon, the inability to use the standard AK sight when installing any device on the bracket.

Known bracket for mounting optical and mechanical sights of handguns WO201244968, for mounting optical and mechanical sights of handguns having a bullpup configuration built on the basis of AK, containing a bar for mounting optical and mechanical sights and mounting elements mounted on a removable top the cover of the weapon, made long, covering it with a receiver with a gas vent mechanism, the front end of which is engaged with a hook, which is mounted on in front of the gas chamber, the middle mounting element is engaged with a hook on the modified block of the sight, the rear end of which is mounted in the guide of the return mechanism, and the mechanical sights on the cover are detachable or inseparable.

The disadvantages of this bracket are: the need for large alterations of parts of the AK, the difficulty of disassembling, reducing the reliability of the circuit and increasing the weight of the AK.

Closest to the proposed is a device for mounting an optical sight of a weapon (RU 2199073), consisting of a mounting element on the weapon and at least one annular clamping element in its upper part, made of sheet metal and made in the form of a bracket with a saddle for sight and lateral ring springs, the lower ends of the bracket being bent inward, and when tightening the clamping unit with a lever, they are attached to the dovetail bar on the weapon.

The disadvantages of this bracket are: the inability to install on weapons that do not have a dovetail bar on the top of the weapon, and, accordingly, its inapplicability to installation on Kalashnikov assault rifles.

The objective of the invention is to provide a quick-detachable bracket for installing additional devices on Kalashnikov assault rifles of a standard configuration, which eliminates the disadvantages of the above devices and improves the operational characteristics of the assault rifles.

The task is achieved by the proposed options for quick-detachable brackets, in which option 1:

Option 1. A quick-detachable bracket for attaching additional devices to Kalashnikov’s assault rifles, including an attachment element made of spring sheet steel on a weapon, while it is made in the form of a U-shaped frame with a shelf for attaching strips and support plates located at an angle from 3 to 10 ^° , with front, lower and rear bearing surfaces, supported by structural elements of the machine, with rigidly fixed nuts mounted on the plates coaxially with the holes for mounting the aiming strip of the machine and having they have radial grooves on the end surfaces for locking the fastening screws screwed into the nuts, the ends of which, when screwed into the nuts, enter the holes for attaching the sighting strip of the machine without touching it, and in the caps of the locking screws there is one or more perpendicular holes in which there is a cylindrical stopper having a hat on one side and a pointed end on the other side, protruding beyond the lower plane of the lock screw caps under the action of leaf springs fixed to the screws with lock screws by nuts, and interacting with the radial grooves of the nuts when tightening the fixing screws by hand using the swivel brackets.

According to option 2:

Option 2. A quick-detachable bracket for attaching additional devices to Kalashnikov’s assault rifles, including an element for attaching to a weapon, while it is made of sheet steel in the form of a U-shaped frame with a shelf for attaching strips and two pairs of support plates at its ends located between each other at an angle of 3 to 10 ^° , having lower and rear bearing surfaces, supported by structural elements of the machine, with rigidly fixed nuts mounted on the first pair of plates coaxially with holes for mounting the sighting plan ki of the machine and having radial grooves on the end surfaces for locking the fastening screws screwed into the nuts, the ends of which, when screwed into the nuts, enter the holes for fastening the sighting strip of the machine without touching it, and in the caps of the locking screws there is one or more perpendicular holes in which there is a cylindrical stopper having a cap on one side and a pointed end protruding beyond the lower plane of the cap screws under the action of leaf springs fixed to on the inside with locking washers, and interacting with the radial grooves of the nuts when tightening the fixing screws by hand using rotary brackets, while the second pair of support plates on the surface of one of them has a mounting hole with radial grooves, and on the other a coaxial first threaded hole through which with the help of a fixing screw with stoppers, they are mounted in the transverse hole of the insert made of light alloy in the form of a split or solid box with cylindrical grooves on its lower and upper ovyh surfaces, repeating the barrel shape, the vent tube and the gas tube automaton being inserted between them and fixed by the end abutment or gas pipe, or an additional screw, and having vertical side surfaces of the T-shaped or other protrusions or recesses for fastening auxiliary devices.

The invention is illustrated by the following drawings:

FIG. 1. Bracket assembly with Picatinny rail, left view, option 1.

FIG. 2. Bracket assembly with Picatinny rail, right view, option 1.

FIG. 3. Bracket assembly with Picatinny rail, rear view, option 1.

FIG. 4. Nut with radial grooves on the end surface.

FIG. 5. Screw with locks and swivel bracket, bottom view.

FIG. 6. The design of the screw with the latches in the disassembled position, side view, option 1.

FIG. 7. Bracket mounted on a Kalashnikov assault rifle, with a collimator sight, left view, option 1.

FIG. 7a. Sighting pad AK with a fixing hole of an aiming strip.

FIG. 8. Bracket mounted on a Kalashnikov assault rifle, with a collimator sight, right view, option 1.

Fig.9. Bracket mounted on the machine, rear view.

Figure 10. Bracket with extended shelf, additional support plates and liner, right view, option 2.

11. Bracket with Picatinny rail and liner mounted on a Kalashnikov assault rifle, left view, option 2.

Figa. The end of the left base plate with radial grooves and the fixing screw, left view, option 2.

Fig. 12. Bracket with an optical sight mounted on it, on the machine, right view, option 2.

FIG. 13. The insert for mounting the support plates of the bracket: a - rear view, with T-shaped protrusions; b - top view (option- "with a slit") with mounting and clamping screws and T-shaped protrusions; c - right view; g - top view (option - "without a cut"); d - rear view, with Picatinny rail.

FIG. 14. Bracket with a collimator sight mounted on it (option 1) and an insert with a laser target indicator and a flashlight (option 2) mounted on it on an AK, top view.

Option 1.

The quick-detachable bracket for attaching additional devices to the Kalashnikov (AK) assault rifle, according to option 1, includes a U-shaped frame (1), nuts (2, 2 '), fixing screws (3.3'), Picatinny rail (4) (Fig. . 1, 2, 3).

 U-shaped frame (1) contains a shelf (5), left (6) and right (7) support plates. The shelf (5) has holes (8) for fastening on the shelf (5) of the Picatinny rail with screws or rivets (9) (Fig. 3).

The left support plate (6) has cutouts (10), (11), (12), a window (13), support planes (14), (15) and (16). In the middle part of the plate (6), the nut (2) is rigidly fixed (Fig. 1, 3).

The right support plate (7) has cutouts (17) (12 ') (11'), a protrusion (18), a window (19), a fixed nut (2 '), and support planes (16') (15 ') (Fig. . 2, 3).

The U-shaped frame (1) is made of spring steel with a thickness of 1 to 2.5 mm and is capable of reversible elastic deformation. The transverse internal size of the shelf (5) corresponds to the transverse size of the AK sighting pad, and the left (6) and right (7) support plates are located on each other on the shelf (5) at an angle of 3 to 10 ^° .

The dimensions of the supporting planes (14) (15) (16) (15 ') (16') and the protrusion (18) correspond to the supporting surfaces of parts of AK parts in the contact areas: plane (14) - abuts against the spring of the AK gas tube on the left; (15) - rests on the upper surface of the forearm AK on the left; (16) - rests against the protrusion of the barrel liner AK on the left; (15 ') - abuts against the surface of the fore-end AK on the right; (16 ') - rests against the protrusion of the barrel liner AK on the right; (18) - rests against the flag checks the gas tube AK, turned fully against the clockwise and abutted in the spring of the gas tube AK (Fig. 7, 8).

Windows (13) and (19) serve to reduce the rigidity of the left and right support plates when adapting their support surfaces when installed on an AK.

Nuts (2) (2 ') are in the form of cylinders, one of the ends of which have radial grooves (20), and the second ends are rigidly attached to the side surfaces of the plates (6) and (7) opposite each other, forming on the plates (6) and ( 7) through threaded holes (21), which, when donning the bracket to the AK sighting block, turn out to be opposite to the holes intended for mounting the standard aiming strip on the AK (Figs. 3, 4).

The fixing screws (3) (3 ') consist of a threaded part (22), at the end of which there is a support pin (23), caps (24) with holes (25) (25') for the stoppers (26) (26 ') and a protrusion (27) having a groove (28) for the lock washer (29) securing the leaf spring (30) on the protrusion (27). On the side surface of the cap (24) there are holes (31) for fastening the pivot bracket (32) (Fig. 5, 6).

Bracket assembly: on the shelf (5) of the frame (1) with screws or rivets (9), fix the Picatinny rail (4) through the holes (8). Assemble the fixing screws (3) - insert the stoppers (26, 26 ') into the holes (25) (25'), cover them with a leaf spring (30) and fix the spring on the protrusion (27) with a lock washer (29). In this case, the chamfered ends (33) of the stoppers (26, 26 ') under the action of a leaf spring (30) on their caps (34) extend beyond the lower plane of the cap surface (24) of the screw (3) (Fig. 3; 6).

The assembled mounting screws (3, 3 ') are screwed into the nuts (2, 2'), leaving a gap between the end surfaces of the nuts (2, 2 ') with radial grooves (20) and the caps (24) of the screws (3, 3') ( figure 3).

The quick-detachable bracket works as follows: check the AK gas tube checks counterclockwise until it stops in the gas tube spring, put the bracket with mounting screws (3, 3 ') onto the AK sight pad top-down (Fig. 7, 7a, 8, 9). In this case, the support plates (6, 7) are elastically deformed on the block and are tightly pressed to its side surfaces, the angle between them disappears, and they become parallel to each other and the side surfaces of the block of the aiming plate.

The bracket is fed forward and down towards the gas tube. At the same time, it drops to the stop of the supporting plane (15, 15 ') in the upper part of the forearm AK. With an effort, the bracket is fed forward, squeezing the supporting surface (14) and the protrusion (18) (through the check mark AK) a little bit the spring of the gas tube AK. In this case, the supporting planes (16, 16 ') fall on the protrusions of the liner of the AK barrel and are pressed against them by the spring of the AK gas tube.

In this case, the holes (21) of the nuts (2, 2 ') are installed opposite the holes for mounting the aiming plate on the AK block (Fig. 7a).

Screw the fixing screws (3, 3 ') into the holes until they stop. In this case, the support pins (23) of the fixing screws enter the holes of the shoe without clamping the sighting strip AK located in them, but only fixing the position of the bracket on the sighting block AK (Fig. 9).

When tightening the screws (3, 3 '), the lower surface of the cap (24) of the fixing screws (3) abuts against the end surface with radial grooves (20) of the nuts (2, 2'). The ends (33) of the stoppers (26, 26 ') protruding beyond the lower plane of the cap (24) slide across the radial grooves of the nut surface and, under the action of the flat springs (30), fix the position of the screw relative to the nut in the grooves, preventing the screws (3, 3') turn away from vibrations that occur during shots (Fig.9).

The protruding parts of the AK gas tube checks when installing the bracket on the AK block fall into the cutouts (10) and (17) without touching the bracket. The clamp of the aiming strip AK when moving along the strap falls into the cutouts (12, 12 '), which allows you to freely use the standard scope with the bracket installed (Fig. 7, 8, 9). For the final stabilization of the position of the bracket on the sighting pad AK cock the automatic shutter and sharply release. When the bolt frame is hit in the forward position, all the gaps and unstable positions of the bracket supports come to equilibrium positions and the bracket under the elastic properties of the material from which it is made, and the AK gas tube springs are firmly and reproducibly fixed in a position specific to a particular machine.

Also, due to the elastic properties of the structure, the bracket is able to dynamically adapt to different machines, slightly different in size of parts, and reproducibly installed on specific samples.

After (or before) installing the bracket on the AK on the Picatinny rail, set the scope and bring it to normal battle.

To remove the bracket from the machine, it is enough to unscrew the fixing screws (3, 3 ') from the nuts (2, 2') by half, pull the bracket with the scope up and remove it from the machine.

The installation (removal) time of the bracket from the machine does not exceed 20 seconds. The weight of the bracket without Picatinny rail does not exceed 50 g.

When tested by shooting with Aimpoint Micro collimator sight on various AK 74M assault rifles, the bracket proved itself to be a reliable quick-detachable device that can be reproducibly mounted on automatic machines, not shifting the aiming mark of the collimator sight when firing with single and automatic fire, allowing free use of the standard sight of the machine, which does not interfere with folding the butt for installation not requiring any tools.

Option 2

The quick-detachable bracket for attaching additional devices to the AK, according to option 2, includes: an arm according to option 1, having elongated shelf (5) and part of the U-shaped frame (1), at the end of which there are additional support plates (35, 35 '), having holes (36, 36 ') in which there is a fastening screw (37) (similar in construction to a fastening screw (3)) fastening the support plates (35, 35') on the side surface of the insert (38) (Fig. 10) . The hole (36 ') of the base plate (35') has a screw thread (37).

An elongated Picatinny rail (4) is fixed on the surface of the shelf (5) (Fig. 10, 11, 12). Various fastening elements can also be mounted on the outer side surfaces of the support plates (35, 35 ').

In option 2, the left (6) and right (7) support plates do not have a support plane (14) and a protrusion (18), since the front supporting surface is an insert (38).

 The insert (38) has a width equal to the width of the AK sighting pad, and is a parallelepiped, on two opposite side surfaces of which there are grooves (39) and (40) in the form of half-cylinders (Fig. 13 (a, e)). The lower groove (40) has a diameter corresponding to the diameter of the portion of the AK barrel located between the forend and the gas pipe, the upper (39) has approximately the diameter corresponding to the AK gas exhaust pipe to the middle, and after the middle, the increased diameter (41) corresponding to the diameter of the gas pipe AK inserted on the flue pipe. A jumper (42) is formed between the grooves (39, 40), in which there is an opening (43) for the fixing screw (37).

 On the side surface of the liner (38) there are T-shaped protrusions (44) for mounting auxiliary devices (Fig.13a, b, c, d).

In the jumper (42), in the part of the increased diameter (41), there is an opening (45).

 Part of the jumper (42) with a diameter (39) can be made whole (Fig.13g) or have a section (46) (Fig.13b). In the variant with a cut (46) (Fig.13b), the insert (38) takes the form of a bracket, the ends (47, 47 ') of which through the transverse threaded hole (48) can be pulled together by a screw (49) for rigidly fastening the insert (38 ) between the barrel and the exhaust pipe AK.

In the embodiment of the liner (38) without a cut (46) (Fig. 13d), it is fixed by stopping the end of the gas tube AK, worn on the end of the gas outlet tube. At the same time, the end of the gas tube having a diameter corresponding to the increased diameter (41) of the groove (39) abuts against a ledge formed by the difference in diameters (39) and (41), fixing the insert (38) between the barrel, the gas exhaust pipe and the end of the AK gas pipe .

The insert (38) on the side surfaces may have instead of the T-shaped protrusions (44) various other types of attachment of additional devices, for example: Picatinny rail, dovetail, threaded holes and others, attached to the side surfaces or made with it as a whole (Fig.13d). In this case, the insert (38) can also be used as a stand-alone bracket for attaching under-barrel lights, LTC, and other additional equipment.

Bracket assembly as per option 2.

A sight (50) is mounted on the bar (4). The machine is incompletely disassembled, the gas tube is removed from it, and between the gas outlet pipe and the barrel, the insert (38) is inserted with a groove (40) on the barrel, with a groove (39) under the gas pipe and the insert (38) is pushed forward until it stops.

Insert the end of the gas pipe into the gas pipe and fix the gas pipe with a check on the block of the sighting strip AK. In this case, the insert (38) is fixed on the machine.

If you use the option of the liner with a slit (Fig.13b), for more rigid fixation, it is additionally secured with a screw clamp (49), tightening the ends (47, 47 ') of the liner (38) and pressing them to the side surfaces of the barrel and the exhaust pipe AK.

The bracket (1) with the plates (6.7) is put on the block of the sighting strip AK and fixed with screws (3.3 ') in the holes for the sighting strip AK. The holes (36, 36 ') of the support plates (35, 35') are opposite the hole (43) of the insert (38). A screw (37) is inserted into the hole (36) and the support plates (35, 35 ') are pulled together and the insert (38), screwing the screw (37) into the threaded hole (36'). The screw head stoppers (37), when screwed in the holes (43) and (36 '), interact with the radial grooves (20) applied around the hole (36) of the support plate (35), similarly to option 1 (Fig. 11a).

In this case, the bracket (1) according to option (2) receives four fulcrum and is firmly fixed on the AK, allowing the installation of heavy sights and other equipment.

On the T-shaped protrusions (44), it is possible to install quick-detachable brackets, lights, LOC, and other additional devices according to the patent RU 2434196.

When removing the bracket (1), unscrew the screw (37), screws (3, 3 ') and remove the bracket from the AK. If necessary, the liner (38) is removed by removing the gas tube AK. The liner (38) in the variant with T-shaped protrusions does not interfere with the installation of an under-barrel grenade launcher on the machine.

The quick-detachable bracket (1) according to option 1 and the insert (38) can also be used as independent brackets for attaching auxiliary devices to the AK (Fig. 14), and according to option 2 only as a single device.

The technical result of the invention is to increase the operational characteristics of the AK, consisting in the emergence of opportunities: a quick reproducible installation of light collimator and heavy optical sights on the AK above the strip of the aiming bar while maintaining the ability to use the standard aiming bar and the possibility of folding the butt of the machine in the transport position without removing the sights, without any alteration of the design of the machine and without the use of any tools; installation of the LCC, flashlights, additional handles, bipods on the quick-detachable bracket or on its supporting element - insert; quick dismantling of the bracket and additional devices installed on the machine with its help.

Claims (2)

1. A quick-detachable bracket for attaching additional devices to Kalashnikov’s assault rifles, including a fastener made of spring sheet steel on a weapon, characterized in that the fastener is made in the form of a U-shaped frame with a shelf for attaching strips and support plates located at an angle from 3 to 10 °, having front, lower and rear bearing surfaces, supported by structural elements of the machine, with rigidly fixed nuts mounted on plates coaxially with holes for mounting sighting plate ki of the machine and having radial grooves on the end surfaces for locking the fastening screws screwed into the nuts, the ends of which, when screwed into the nuts, enter the holes for fastening the sighting strip of the machine without touching it, and in the caps of the locking screws there is one or more perpendicular holes in which there is a cylindrical stopper having a cap on one side and a pointed end protruding beyond the lower plane of the cap screws under the action of leaf springs fixed to screws with lock washers, and interacting with radial grooves of nuts when tightening the fixing screws by hand using rotary brackets. 2. A quick-detachable bracket for attaching additional devices to Kalashnikov’s assault rifles, including a fastener for weapons, characterized in that the fastener is made of sheet steel in the form of a U-shaped frame with a shelf for attaching strips and two pairs of support plates at its ends located with each other at an angle of 3 to 10 °, having lower and rear supporting surfaces, supported by structural elements of the machine, with rigidly fixed nuts mounted on the first pair of plates coaxially with the holes the aiming plate of the machine and having radial grooves on the end surfaces for locking the fastening screws screwed into the nuts, the ends of which, when screwed into the nuts, enter the holes for attaching the aiming plate of the machine without touching it, and there is one or more perpendicular holes in the caps of the locking screws, in which there is a cylindrical stopper having a cap on one side and a pointed end on the other side, protruding beyond the lower plane of the cap screws of the locking screws under the action of leaf springs in, secured to the screws with lock washers and interacting with the radial grooves of the nuts when tightening the fixing screws by hand using pivoting brackets, while the second pair of support plates on the surface of one of them has a mounting hole with radial grooves and the other coaxial with the first, a threaded hole through which, with the help of a fixing screw with stoppers, they are mounted in the transverse hole of the insert made of light alloy in the form of a split or solid parallelepiped with cylindrical grooves on it lower and upper side surfaces, repeating the shape of the barrel, gas exhaust pipe and gas pipe of the machine, inserted between them and fixed either by stopping the end of the gas pipe or an additional screw, and having vertical T-shaped or other protrusions or recesses for mounting additional devices .

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