RU176270U1 - ADJUSTABLE GAS BLOCK FOR FIREARMS - Google Patents

Abstract

The utility model relates to weapons technology, namely, devices for regulating the gas flow of small arms. The essence of the utility model is to provide an adjustable gas unit for a firearm, which comprises a gas unit body and a gas regulator. The body of the gas block is made with the possibility of mounting on the barrel of a firearm. The body of the gas block has a hollow chamber of the gas regulator and a node for interfacing with the gas removal mechanism of the firearm. The gas block housing has a gas outlet located inside the gas regulator chamber, and the gas outlet of the gas block housing is designed for coaxial placement with the gas outlet of the barrel and gas movement from the barrel into the chamber of the regulator. The gas regulator is made with the possibility of partial placement inside the chamber of the gas regulator and with the possibility of rotation around its axis inside the chamber of the gas regulator. When the gas regulator is rotated, the gas flow is moved from the gas outlet of the gas block to the interface with the gas mechanism of the firearm. The utility model differs from the prototype and other well-known analogues in that the gas block housing is additionally provided with a groove, as well as a pressure port, made with the possibility of movable placement of pressure in the pressure port. In addition, the gas regulator contains at least one restrictive protrusion, made with the possibility of movable placement in the groove of the body of the gas block. In addition, on the side surface of the at least one restrictive protrusion, there are at least two recesses which are adapted to interact with the pressure, thereby fixing the position of the gas regulator in the gas block housing. The technical result of the utility model is to increase the operational characteristics and functionality of an adjustable gas unit.

Description

The technical field to which the utility model relates.

The utility model relates to weapons technology, and in particular to devices for regulating the gas flow of small arms. This utility model is an adjustable gas unit for firearms operating on the principle of removal of powder gases from the barrel of a firearm, regulation and maintenance of which is possible without the use of special tools and devices. The adjustable gas unit according to this utility model is also universal, since it is removable and adaptable to any type of small arms, including automatic or semi-automatic small arms, for example, any acceptable combat, civilian, hunting and sporting rifles (carbines) whose work is based on the principle of removal of powder gases from the bore channel described above.

Description of the prior art

Any rifle automatic (self-loading) or semi-automatic weapon with a gas exhaust automation system functionally consists of the following main components: receiver, barrel, gas unit and gas exhaust mechanism. The action of the exhaust system of automation is based on the use of exhaust gases from the bore of the barrel into the gas block through the vent hole in the wall of the barrel. After the bullet passes through the vent hole, part of the powder gases enters the gas block and then drives either the bolt frame or the piston connected via a rod to the bolt frame. Moving back under the influence of the pressure of the powder gases, the bolt frame unlocks the bolt, throws it into the rear position, extracting the empty sleeve and then returning the bolt to the front position with the reloading of a new cartridge from the magazine, thus providing the possibility of a second shot.

As a rule, the gas unit has a mechanism for adjusting the pressure of the powder gases necessary to adjust the reloading force of small arms to the required value. The prior art knows many different gas blocks, for example, from the following patents of the Russian Federation for inventions: No. RU 2164334 (publication date: 03/20/2001), No. RU 2192595 (publication date: 11/10/2002), No. RU 2229078 (publication date: 05/20/2004) and No. RU 2237839 (publication date: 10/10/2004). Various gas blocks are also known from the following US patents: No. 2462119 (publication date: 02/22/1949), No. US 3893370 (publication date: 08/08/1975), No. US 4702146 (publication date: 10.27.1987), No. US 7610844 (date Publications: November 3, 2009), No. US 7856917 (publication date: 12/28/2010), No. US 8393259 (publication date: 03/03/2013), No. US 8596185 (publication date: 12/03/2013), No. US 8701543 (publication date: 04/22/2014), No. US 8813632 (publication date: 08/26/2014), US 8752473 (publication date: 06/17/2014), US 9459061 (publication date: 10/04/2016), as well as from published US patent applications: No. US 20090229454 (publication date: 09/17/2009), No. US 20100218671 (publication date: 02.09.2010), US No. 20130025445 (publication date: 01/31/2013), No. 20130098235 (publication date: 04.25.2013), US No. 20130174721 (publication date: 07/11/2013) and US No. 20140076150 (publication date: 03/20/2014).

The closest analogue to this utility model is an adjustable gas unit described in US patent No. US 8875614 (publication date: 11/04/2014), which is selected as the prototype of this utility model. The adjustable gas block of the prototype contains a housing and a gas regulator. The body is made with the possibility of mounting on the barrel of a firearm and has a hollow chamber of the gas regulator and a node for interfacing with the gas removal mechanism of the firearm. The gas block housing has a gas outlet located inside the gas regulator chamber. The gas outlet of the gas block housing is designed for coaxial placement with the gas outlet of the barrel and the movement of powder gas from the barrel into the chamber of the regulator. The gas regulator is made with the possibility of partial placement inside the chamber of the gas regulator and also with the possibility of rotation around its axis inside the chamber of the gas regulator, moreover, when the gas regulator is rotated, the gas flow is moved from the gas outlet of the gas block to the interface with the gas gun of the firearm . In the body of the gas regulator there are several channels of different diameters that allow you to move the powder gas from the gas outlet of the gas unit to the interface with the gas mechanism of the firearm. The gas flow is controlled by selecting the appropriate channel diameter. To select the diameter of the channel, at the end of the gas regulator there is a drum that is manually actuated.

The disadvantages of the prototype is the complexity of the operation and maintenance of the gas chamber, especially after the accumulation of soot on its internal surfaces, which can lead to the need to use special tools and devices. In addition, the prototype is not universal, because it does not allow visual control of the coaxial coupling of the gas outlet of the gas block body with the gas outlet of the barrel, which in turn limits the possibility of using the prototype on only one model of small arms.

Utility Model Essence

This utility model is aimed at solving the technical problem of eliminating the disadvantages of the prototype, and also aimed at ensuring the regulation of the flow of powder gas in the gas exhaust system of a firearm in order to eliminate the negative effects of such factors as the environment, pollution, the use of various muzzle devices (nozzles), and the use of ammunition of various types, leading to excessive returns, premature wear of the weapon, gas contamination in the face of the shooter and / or unreliable operation of the gun tics of small arms in the event of insufficient pressure in the gas system when changing the type of ammunition.

The technical problem of the utility model is solved by creating an adjustable gas unit for a firearm, which contains a gas unit body and a gas regulator. The body of the gas block is made with the possibility of mounting on the barrel of a firearm. The body of the gas block has a hollow chamber of the gas regulator and a node for interfacing with the gas removal mechanism of the firearm. In the gas block housing there is a gas outlet located inside the gas regulator chamber, and the gas outlet of the gas block housing is designed for coaxial placement with the gas outlet of the barrel and for moving gas from the barrel into the chamber of the regulator. The gas regulator is made with the possibility of partial placement inside the chamber of the gas regulator and with the possibility of rotation around its axis inside the chamber of the gas regulator. When the gas regulator is turned, the gas flow is moved from the gas outlet of the gas block to the interface with the gas mechanism of the firearm. The utility model differs from the prototype and other well-known analogues in that the gas block housing is additionally provided with a groove and also a pressure port made with the possibility of movable placement of pressure in the pressure port. In addition, the gas regulator contains at least one restrictive protrusion made with the possibility of movable placement in the groove of the body of the gas block. In addition, on the side surface of the at least one restrictive protrusion, there are at least two recesses which are adapted to interact with the pressure, thereby fixing the position of the gas regulator in the gas block housing.

In accordance with various embodiments of the utility model, the gas regulator is provided with at least one gas flow adjustment hole that is formed in the body of the gas regulator, which is located inside the gas block body.

In accordance with various embodiments of the utility model, when the pressure is supported in the first recess, at least one gas adjustment hole is partially overlapped, and when the pressure is supported in the second depression, at least one gas flow adjustment hole is completely blocked.

In accordance with various embodiments of the utility model, a groove in the body of the gas unit forms a rotation limiter of the restrictive protrusion of the gas regulator.

In accordance with various embodiments of the utility model, the gas unit housing has an opening for accommodating a stud, bolt or screw, and the gas regulator has an opening for accommodating said stud, bolt or screw, the gas regulator being rotatable around its axis so that the opening housings for accommodating the stud, bolt or screw and the hole of the gas regulator to accommodate the said stud, bolt or screw can be placed coaxially to fix the position of the gas regulator at omyanutoy pin, bolt or screw.

In accordance with various embodiments of the utility model, a spring is installed in the opening for accommodating the inlet for supporting the inlet.

In accordance with various embodiments of the utility model, the gas regulator has a bleed hole located primarily along the central axis.

In accordance with various embodiments of the utility model, the gas unit housing further comprises an opening for accommodating an inlet retaining screw.

In accordance with various embodiments of the utility model, the gas block housing further comprises an opening for positioning the gas outlet of the gas block body coaxially with the gas outlet of the barrel.

In accordance with various embodiments of the utility model, the body of the gas unit is provided with a collar to provide for mounting firearms on the barrel.

Technical result

The technical result provided by the essential features of the utility model is to increase the operational characteristics and functionality of the gas block. The achievement of the technical result is ensured, inter alia, by: (a) implementing such a gas block design that provides an intuitive way to control the gas flow by simply turning the gas regulator to fixed positions; (b) restricting the flow of gas into the weapon’s gas system without over-venting excess gas through the structural components of the gas block; (c) ensuring such a design of the gas block that does not require special tools for operation, operation and maintenance; (d) ensuring the universality of the use of the gas unit with any type of gas systems for small arms, including gas systems with direct injection, short and long piston strokes, and for various types of semi-automatic and automatic small arms; (e) ensuring such a design of the gas block, which allows you to maintain the operating mode of the gas system of weapons in optimal conditions, regardless of external conditions, as well as extending the life cycle of the weapon; (e) improving the comfort of the shooter; (g) the implementation of such a design of the gas block, which provides the ability to completely block the flow of powder gas from the barrel, if necessary to solve certain problems; and (h) providing a compact design of the gas block, which allows you to install long ergonomic forends on the weapon, closing the gas block and protecting the shooter from burns, while maintaining the ability to switch modes of operation.

Additional information on the achievement of the claimed technical result is given below and / or should be obvious to a person skilled in the art based on this description and information that has become available from the prior art.

Brief Description of the Drawings

The essence of the utility model is further illustrated by the figures, which represent:

FIG. 1 is a first perspective view of a gas block body;

FIG. 2 is a second perspective view of a gas block body;

FIG. 3 is a side view of the gas block body;

FIG. 4 is a front view of the body of the gas block;

FIG. 5 is a rear view of the gas block body;

FIG. 6 is a first perspective view of a gas block body with a gas regulator and pressure regulator installed;

FIG. 7 is a second perspective view of the body of the gas block with the installed gas regulator and pressure;

FIG. 8 is a third perspective view of a gas block body with a gas regulator and inlet installed;

FIG. 9 is a front view of the body of the gas block with the installed gas regulator and pressure;

FIG. 10 is a perspective view of a gas block case with a gas regulator and pressure regulator installed (at the moment when the gas regulator is turned to one of the extreme positions);

FIG. 11 is a disassembled perspective view of the gas block body and the gas regulator (the inlet is installed in the gas block body);

FIG. 12 is a disassembled perspective view of a gas block body, a gas regulator, and a pressure regulator;

FIG. 13 is a first perspective view of oppression;

FIG. 14 is a second perspective view of oppression;

FIG. 15 is a first perspective view of a gas regulator;

FIG. 16 is a front view of a gas regulator;

FIG. 17 is a rear view of a gas regulator;

FIG. 18 is a second perspective view of a gas regulator; and

FIG. 19 is a side view of a gas regulator.

Description of items in the drawings

1 - Gas block housing

2 - Clamp

3 - Holes for clamp bolts

4 - Hollow chamber for installing a gas regulator

5 - Hole to accommodate the spring and pressure

6 - gas vent

7 - Limiter of rotation of the gas regulator (counterclockwise)

8 - Gas regulator rotation limiter (clockwise)

9 - A hole in the gas block housing for the stud (bolt, screw) of the “0” position (complete gas supply shutoff)

10 - The hole of the set screw fixing screw

11 - The interface with the gas mechanism of small arms

12 - The hole for positioning the gas outlet of the gas block housing coaxially with the gas outlet of the barrel

13 - Groove for the restrictive protrusion of the gas regulator

14 - Hole for transferring gas to the gas vent mechanism of small arms

15 - Groove for fixing the whip

16 - Oppression

17 - Gas regulator

18 - The first side of the restriction protrusion (to limit the rotation of the gas regulator clockwise)

19 - Figured cutout in the limiter knob

20 - A hole in the body of the regulator for the pin position 0 (complete shutoff of the gas supply)

21 - The first recess for fixing the gas regulator in position "1" (full gas supply)

22 - The second side of the restriction protrusion (to limit rotation counterclockwise)

23 - The working surface of the restrictive protrusion of the gas regulator

24 - The second recess for fixing the gas regulator in position "2" (partial gas supply)

25 - Front bleed hole

26 - Working surface of the groove limiter gas regulator

27 - Gas regulator limiter

28 - Hole (s) for regulating the flow of powder gas

29 - Locking cone

30 - The outer surface of the body of the regulator

31 - The outer surface of the bounding protrusion

32 - Hole for inserting a tool or an improvised item (for example, a sleeve) for switching the position of the gas regulator

33 - The inner surface of the bounding protrusion

34 - The inner surface of the body of the regulator

35 - Threaded hole for closing the bleed hole of the regulator

36 - Limit

Description of Embodiments of a Utility Model

The adjustable gas unit according to this utility model is designed to control the flow of powder gas moving from the barrel to the venting mechanism of small arms. The adjustable gas unit according to this utility model can be used for a wide range of automatic and semi-automatic small arms.

The adjustable gas unit consists of two main elements: the body (1) of the gas unit and the gas regulator (17), which is made with the possibility of partial insertion into the body (1). The adjustable gas unit also contains a spring (not shown in the figures) placed inside the hole (5), a pressure (16), as well as various screws, bolts and / or studs (not shown in the figures) for fastening, connecting, holding or clamping certain parts of the gas block. Any openings of the adjustable gas unit may have an internal thread for screwing bolts or screws. All elements of the adjustable gas block can be made of any suitable thermostable material, for example, metal (steel, titanium) or a metal alloy.

The body (1) of the gas block is configured to be mounted on a barrel of a firearm (not shown in the figures). For this, the body (1) of the gas block is equipped with a clamp (2) or holes for the studs (not shown in the figures) to ensure mounting on the barrel of firearms. By changing the inner diameter of the clamp (2), the gas block can be adapted to any reasonable barrel diameters.

The housing (1) also has a hollow chamber (4) for partial insertion of a gas regulator (17) into it. The housing (1) also has a node (11) for interfacing with the gas mechanism of a firearm (not shown in the figures). In the body (1) of the gas block there is a gas outlet (6) located inside the chamber (4), which is designed for coaxial placement with the gas outlet of the barrel (not shown in the figures) and the movement of gas from the barrel into the chamber (4).

After inserting the gas regulator (17) into the housing (1), the gas regulator (17) has the possibility of limited rotation around its longitudinal axis. When turning the gas regulator, the gas flow is moved from the gas outlet (6) of the body (1) of the gas block to the node (11) for interfacing with the gas mechanism of the firearm. The gas flow is regulated by changing one hole (28) to another hole (28) with a different diameter or by partially (or completely) blocking the hole (28) while turning the gas regulator (17), and the hole (28) is made in that the body part of the gas regulator (17), which is located inside the chamber (4).

The gas regulator (17) has a generally cylindrical shape of a complex section, and also has a limiting protrusion (36), made mainly perpendicular to the longitudinal axis of the gas regulator (17). The restrictive protrusion (36) also has a disk-shaped complex section, which will be most clear from viewing the presented figures. In some embodiments, the gas regulator (17) has two or more restrictive protrusions (36).

The housing (1) of the gas block is provided with a groove (13) for receiving the restrictive protrusion (36) of the gas regulator so that the restrictive protrusion (36) has the possibility of movable (sliding) movement in the groove (13). The groove (13) of the housing (1) of the gas block forms a rotation limiter of the restrictive protrusion (36) of the gas regulator (17). There are at least two recesses (21, 24) on the lateral surface of the restriction protrusion (36), which are configured to interact with the inlet (16), thereby fixing the position of the gas regulator (17) in the gas block case (1). When propping up the pump (16), due to the force of the spring in the first recess (21), partial overlap of at least one hole (28) for adjusting the gas flow is ensured, and when propping the pump (16) in the second recess (24) is ensured complete opening of at least one gas flow adjustment hole (28). When turning, the restriction protrusion (36) to the extreme right position, as shown in FIG. 10, it is possible to separate the gas regulator (17) from the housing (1) by pulling it forward from the housing (1).

The housing (1) of the gas block has an opening (9) for accommodating a stud, bolt or screw (not shown in the figures). The gas regulator (17) has an opening (20) for accommodating said stud, bolt or screw. When the gas regulator (17) is rotated around its longitudinal axis, the hole (9) and the hole (20) can be placed coaxially to fix the position of the gas regulator with the aforementioned stud, bolt or screw.

The gas regulator (17) may also have a bleed hole (25) located mainly along the central axis. In addition, the housing (1) of the gas unit may further comprise an opening (10) for accommodating a screw installation fixing screw (not shown in the figures) for holding the pressure valve (16) inside the hole (5). In addition, the gas block housing (1) may further comprise an opening (12) for (visual, mechanical) positioning the gas outlet (6) of the gas block body coaxially with the gas outlet of the barrel (not shown in the figures).

Adjustable gas unit is operated as follows. The body (1) of the gas block is fixed to the barrel using a clamp (2) or in any other way (for example, pinning or studs) over the gas outlet of the barrel so that the gas outlet (6) of the gas block body and the gas outlet of the barrel are aligned it is possible. The gas outlet of the barrel is aligned with the gas outlet (6) of the gas block body using the hole (12) to position the block using a probe or wire with a diameter of about 1.5 mm or visually highlighting the barrel channel.

As described above, the gas regulator (17) is a rotating body (30) (for example, a cylindrical shape) rotating within certain structurally limited limits, having one or more (for example, two) openings (28) of a rounded or oblong shape. By rotating the gas regulator (17), the gas stream from the gas outlet (6) can be fully / partially opened (position “1”), partially blocked (position “2”) or completely blocked (position “0”). The gas regulator (17) is held in the body of the housing (1) by means of a restrictive protrusion (36), for which there is a special groove (13) in the limiter (27), for interaction with which, on the gas regulator (17) there is a special restrictive protrusion ( 36), limited by a curved neckline (19) on one side and a protrusion (22) on the other side.

The rotation of the gas regulator (17) is limited clockwise by the limiter - the first side wall (18) abutting against the limiter (8), counterclockwise - by the interaction of the second side wall (22) and the limiter (7), respectively. The spring-loaded pressure (16) simultaneously ensures the fixation of the gas regulator (17) in position “1”, entering into interaction with the recess (21) (or position “2”, entering into interaction with the recess (24)) and, at the same time, supports gas regulator (17), pressing the surface (23) of the gas regulator (17) to the working surface of the groove (13).

To switch the gas block from position “1” to position “2”, or vice versa, you must turn the gas regulator (17) by hand with your fingers or use any improvised object (for example, a cartridge, sleeve) for this, inserting it into the hole (32) and using it as a lever. In this case, the applied force will force the pressure (16) to go back into the hole (5). After turning, the pressure (16) under the action of the spring and interacting with the corresponding recess (21) for position “1” or recess (24) for position “2” will fix the gas regulator (17) in the position necessary for the user. Depending on the position of the gas regulator (17), the hole (or holes) (28) can either completely block the flow of powder gas, or partially block the flow of powder gas flowing from the gas outlet (6), or allow the powder gas to flow freely through the body of the gas controller (17) in the inner surface (34), through the hole (14) and further into the venting mechanism of small arms.

In addition to the basic provisions (position “1” and position “2”) of the gas regulator (17), there is an additional mode in which the gas regulator (17) is in position “0”. In the "0" position, the gas flow is completely blocked through the gas block. To bring the gas block to the “0” position, it is necessary to turn the regulator (17) so that the hole (20) on the regulator (17) coincides with the hole (9) in the gas block case (1). Then, in the resulting horizontal hole, insert a pin (pin, pin, piece of wire) with a diameter of up to 3 mm and ensure its fixation in this position. In this case, the gas outlet (6) will be completely blocked by the body of the regulator (17), or rather the outer surface (30) of the body of the regulator. In this case, the supply of powder gas to the inside of the chamber (4) and / or to the venting mechanism of small arms will be completely blocked. This provision is necessary in those conditions when, after firing a shot, it is necessary for one reason or another to turn off the automation of the return mechanism of small arms.

In front of the gas regulator (17) there is an additional bleed hole (25), which can be plugged (hidden) by screwing the set screw into the hole (35). The bleed hole (25) makes it possible to further fine-tune the amount of gas transmitted to the gas vent mechanism of small arms depending on the model of small arms and / or the required operating mode of the gas weapon system on which the gas block is installed according to this utility model.

For servicing the gas block, it is necessary to tighten the pressure (16) and turn the regulator (17) to the position shown in FIG. 10. In this case, the first lateral side (18) of the restriction protrusion (36) should be near the rotation limiter (8), and the figured cut-out (19) should be near the rotation limiter (7). After that, the gas regulator (17) can be removed from the chamber (4) of the gas block. The inlet (16) can also be removed for maintenance from the housing (1) of the gas block by unscrewing the set screw from the hole (10). Assembly after maintenance is carried out in the reverse order.

Claims (16)

1. An adjustable gas unit for a firearm, comprising: a gas unit housing configured to be mounted on the barrel of a firearm and having a hollow chamber of the gas regulator and an interface with the gas mechanism of the firearm, and in the body of the gas unit there is a gas outlet located inside the gas regulator chamber, the gas outlet of the gas unit housing coaxial placement with the gas outlet of the barrel and the movement of gas from the barrel into the chamber of the regulator, a gas regulator configured to partially accommodate a gas regulator inside the chamber of the gas regulator and rotatable around its axis inside the gas regulator chamber, and when the gas regulator is rotated, the gas flow is moved from the gas outlet of the gas block body to the interface with the gas gun of the firearm , characterized in that the case of the gas block is additionally equipped with a groove, as well as a hole of the inlet made with the possibility of movable placement of the inlet in the outlet of the outlet, moreover, the gas regulator contains at least one restrictive protrusion made with the possibility of movable placement in the groove of the body of the gas block, moreover, on the side surface of at least one restrictive protrusion, there are at least two recesses that are configured to interact with pressure, thereby fixing the position of the gas regulator in the body of the gas block. 2. The adjustable gas block according to claim 1, characterized in that the gas regulator is provided with at least one gas flow adjustment hole, which is formed in the body of the gas regulator, which is located inside the gas block body. 3. The adjustable gas unit according to claim 2, characterized in that when the pressure is supported in the first recess, at least one gas flow adjustment hole is partially blocked, and when the pressure is supported in the second depression, at least one gas flow adjustment hole is completely blocked . 4. The adjustable gas unit according to claim 1, characterized in that the groove of the body of the gas unit forms a rotation limiter of the restrictive protrusion of the gas regulator. 5. The adjustable gas unit according to claim 1, characterized in that the gas unit body has an opening for accommodating a stud, bolt or screw, and the gas regulator has an opening for accommodating said stud, bolt or screw, wherein the gas regulator is rotatable around its axis so that the opening of the housing to accommodate the stud, bolt or screw and the hole of the gas regulator to accommodate the stud, bolt or screw can be coaxially positioned to fix the position of the gas regulator of said stud screw, bolt or screw. 6. The adjustable gas unit according to claim 1, characterized in that a spring is installed in the hole for accommodating the inlet for supporting the inlet. 7. The adjustable gas unit according to claim 1, characterized in that the gas regulator has a bleed hole located mainly along the central axis. 8. The adjustable gas unit according to claim 1, characterized in that the body of the gas unit further comprises an opening for receiving an installation screw-fixing screw. 9. The adjustable gas unit according to claim 1, characterized in that the gas unit body further comprises an opening for positioning the gas outlet of the gas block body coaxially with the gas outlet of the barrel. 10. The adjustable gas unit according to claim 1, characterized in that the gas unit body is equipped with a clamp for securing a firearm to the barrel.

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