RU2148767C1 - Folding small arms - Google Patents

Abstract

FIELD: weaponry, applicable in specimens of automatic small arms having a tough locking. SUBSTANCE: folding small arms has a barrel assembly with members of tough locking, receiver assembly fastened to it by the hinge axle with hinge ears, fastening assembly of the barrel assembly and receiver assembly in the fighting position, breechblock carrier with the cocking handle and the breechblock stop. On the side opposite the hinge the barrel assembly and receiver assembly have lugs adjoining each other. An axle is installed in the opening made in the lug of the receiver assembly, parallel to the hinge axle, fastened to which is a handle for turning. Conjugate bearing surfaces are made on the handle in the closed position and on the side of the lug on the barrel assembly facing it. The cocking handle is located in a closed groove made in the lateral wall of the receiver. It is fastened in the breechblock carrier for folding back, in the recess made the inner surface of the receiver. The handle has a catch keeping it the working position. EFFECT: improved operating characteristics: provision of arms disassembly in folded position, and simplified process of weapon arming. 4 dwg

Description

 The invention relates to the field of weapons technology and can be used in samples of small automatic weapons having a hard locking.

 The total length of small arms is important both for its combat use and for transportation, for example, in infantry fighting vehicles. The length of small arms samples is determined by the sum of the dimensions of the following elements: a muzzle device, a barrel, a receiver and a butt. The practice of designing small arms has shown that the most tangible result in reducing the length of the weapon is achieved by folding the butt in the stowed position or by switching to the Bull-Pap system, which excludes the butt from the weapon design.

 However, in this solution, the axial dimension in the transport position includes, in addition to the barrel with a muzzle device, the entire automation box. For weapons with a sufficiently long barrel, this solution does not satisfy the requirements of transportation, for example, in a BMP.

 The problem of reducing the length of weapons was especially acute when developing a 12.7 mm sniper rifle.

 Known folding small arms containing a barrel unit, including hard locking elements, and a box unit with hinge eyes connected by the hinge axis [1].

 To reduce the length in the transport position in the weapon, the barrel block and the box block are folded around the hinge with the horizontal direction of the axis of rotation, which serves to “break”. This weapon can only lead a single non-self-loading fire.

 It is known to develop small arms containing a barrel unit with hard locking elements, and a box unit with hinge eyes connected by an axis of the hinge. In it, the trunk unit and the box unit are equipped with finger eyes to ensure the installation of a vertical fixing finger in the combat position, the hinge axis being vertical and a comb limiter of movable parts made on the barrel unit [2].

This design has the following operational disadvantages:
- to install the fixing finger, it is necessary to combine three holes in the eyes of the hinge, which is difficult at night and in winter;
- the impossibility of disassembling weapons in a folded position. To disassemble it, it is necessary to bring it into a combat position, which is difficult in a confined space.

 The objective of the invention is to improve the operational characteristics of weapons: providing the ability to disassemble weapons in a folded position and simplifying the process of bringing weapons into a combat position.

The technical result is achieved by the fact that in a folding small arms containing a barrel unit with hard locking elements, a receiver unit attached to it with a hinge axis, a receiver unit with hinge eyes, a barrel unit attachment unit with a receiver unit in the combat position, a bolt frame with a cocking handle and a limiter slide frame movement:
- on the barrel unit and the receiver unit from the side opposite the hinge, adjacent protrusions are made;
- in the hole made in the protrusion of the box block parallel to the axis of the hinge, an axis is mounted, fastened by two cheeks from the end sides to another axis on which the handle is rotatably fixed;
- on the handle in the closed position and the side of the protrusion on the barrel unit facing it, mating bearing surfaces are made;
- cocking handle is placed in a closed groove made in the side wall of the receiver;
- cocking handle is fixed in the bolt frame with the possibility of folding back into the recess made in the bolt frame, flush with the inner surface of the receiver;
- cocking handle is equipped with a latch that holds it in working position.

The foregoing is illustrated by drawings, where:
- figure 1 shows a small arms in a combat position, top view;
- figure 2 shows a small arms in the folded position, a top view;
- figure 3 shows a section aa of fig. 1;
- figure 4 shows a section bB of figure 3.

 Folding small arms contains a barrel 1 with hard locking elements, a receiver 2, a butt 3. Inside the receiver there is a bolt frame 4 with a bolt 5. In the bolt frame on the axis 6 is fixed cocking handle 7, equipped with a spring-loaded spring 8 with a lock 9. Cocking handle comes out of the receiver through a closed longitudinal groove 10 made in the side wall of the receiver. A recess 11 is made in the bolt frame to place the cocking handle in the folded position. On the trunk and receiver are made eyes, they are fixed to the axis 12 of the hinge, around which the folding of the weapon. The projections 13 and 14 are adjacent to each other on the barrel and the receiver, on the opposite side of the hinge axis. The axis of the receiver is mounted on the projection of the receiver 15, which is fastened by two cheeks 16 from the end sides to the axis 17, on which the handle 18 is fixed. On the handle 18, the abutment surface 19 is made. The surfaces 20 and 21 corresponding to it are made on the protrusions of the barrel 13 and the receiver 14, respectively.

 In the combat position, the barrel unit 1 with all the nodes mounted on the barrel and the receiver unit 2 (similarly) are interconnected by the axis of the hinge 12 and the handle 18, the supporting surface of which 19 is adjacent to the supporting surface 20 on the protrusion of the barrel 13 in the closed position of the handle .

When folding the arms, the handle 18 is rotated to a position perpendicular to the axis of the barrel channel, while its supporting surface 19 is out of engagement with the supporting surface 20 on the protrusion 13 of the barrel. The impact on the cocking handle 7, the shutter 5 is disengaged from the fighting stops on the barrel, after which the barrel is folded ~ 180 ^° around the hinge 12 and is fixed in the folded position. Cocking handle 7, resting on the end surface of the groove 22, keeps the bolt 5 and the bolt frame 4 from falling out of the receiver. To remove the moving parts from the receiver, it is necessary to depress the latch 9 and turn the cocking handle until it is sunk into the recess 11 in the bolt frame. After that, the shutter and bolt frame are removed from the receiver along with the return spring.

 When assembling weapons, a return spring, a bolt with a slide frame are inserted into the receiver, after which the cocking handle is rotated to the working position and fixed in this position by the latch 9.

 To bring the weapon into combat position, it is necessary to take the bolt back a little, turn the barrel until the protrusions of the barrel 13 and the receiver 14 are in contact, and then release the cocking handle. The handle 18 to disengage from the protrusion 14 of the receiver and rotate in the direction of the barrel, placing it perpendicular to the barrel. Rotate the handle in a position parallel to the barrel, while its supporting surface 19 will engage with the supporting surface 20 on the protrusion of the barrel 13. After fixing the handle, the weapon is in the combat position.

Thus, the proposed weapon design:
- simplifies the process of folding weapons and bringing into a combat position in various climatic conditions and in the dark;
- provides the ability to disassemble the weapon in the folded position, i.e. in confined spaces.

 The company made prototypes of a 12.7 mm sniper rifle and tested with positive results.

Sources of information:
1. US patent N 1779770, cl. F 41 C 7/10, 1930

 2. Patent RU N 2067741, cl. 6 F 41 A 11/04, 1996

Claims (1)

 Folding small arms containing a barrel unit with hard locking elements, a receiver unit attached to it with a hinge axis, a receiver unit with hinge eyes, a barrel unit attachment unit with a receiver unit in a combat position, a bolt frame with a cocking handle, and a bolt stop limiter, characterized in that the bonding unit of the barrel unit with the receiver unit in the combat position is a protrusion located on the barrel unit and the receiver unit from the side opposite the hinge, and adjacent to each other, while in the hole made in the protrusion of the receiver of the receiver parallel to the axis of the hinge, there is an axis on which the handle is pivotally mounted, and on the handle and the side of the protrusion of the barrel block facing it in the closed position, mating supporting surfaces, cocking handle placed in a closed groove made in the side wall of the receiver, fixed in the bolt frame with the possibility of folding back into the recess made in the bolt frame, flush with the inner the surface of the receiver, and is equipped with a latch that holds it in position.

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