RU2572012C2 - Fire arms locking assembly - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: claimed assembly comprises the breechblock, barrel, helical groove with straight section and through bore for barrel seat. The breechblock is fitted in automatics box guides to displace axially therein. The breechblock has fire thrusts. The barrel gas fire thrusts and block ledge. The latter and said helical groove makes a pair. Additionally, the barrel block ledge front plane is provided with the fire thrust to interact with one of the breechblock fire thrusts.

EFFECT: simplified design, higher reliability.

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Description

The invention relates to weapons technology and is a locking unit. The locking unit includes a bolt with a combat stop mounted on the guides of the automation box with axial movement, a barrel with a combat stop and a flange protrusion, a helical groove with a straight section and a through hole for installing the barrel placed on the automation box. The rim of the barrel and the helical groove make up a pair. On the front plane of the rim projection of the barrel, a combat support is additionally made with the possibility of interaction with one of the combat stops of the bolt. The invention improves reliability and simplifies the design.

The invention relates to weapons technology and is a locking unit. Known semi-automatic pistol [1], comprising a housing mounted on the slide guides, a barrel with protrusions and a combat stop made thereon, stops that limit the axial movement of the barrel and a return mechanism. Shutter guides are made in the form of protrusions on the outer sides of the walls, mounted on the housing on both sides of the barrel, one of which is located in front of the control protrusions on the barrel, the second at the rear. On the end faces of the walls and the end surfaces of the protrusions facing them, mating helical surfaces of the same direction are made. On the front side of the protrusion of the barrel facing the front wall, a combat emphasis is made with the possibility of interaction with the front end wall of the reflection window of the spent sleeve in the bolt with the barrel in the front position. The rear wall is bent inward perpendicular to the axis of the bore with the possibility of interaction with the end of the breech in the extreme rear position.

Known semi-automatic pistol [2], comprising a housing mounted on rails with the possibility of axial movement of the bolt with combat stops, a barrel with reciprocal combat stops, a screw pair in the form of a flange protrusion and a screw groove with a straight initial section, stops that limit the axial movement of the barrel, and return mechanism. In the pistol, the combat stops on the barrel are made in the form of at least two teeth evenly spaced around the circumference of the barrel. Before the combat stops of the barrel, a bushing is fixed in the bolt, in which the response combat stops, a central hole for the barrel and grooves are made in an amount equal to the number of combat stops of the barrel. The combat stops of the barrel are shifted in the angular direction relative to the grooves of the sleeve by the angle of rotation of the barrel when unlocked. On the vertical axis in the housing on the side of the barrel there is a latch with a beveled tooth with the possibility of its interaction with the rear position of the barrel with the counter surface of the shoulder made on the breech of the barrel. The inner wall of the shutter housing at the location of the retainer head is made with a recess in the direction of rotation of the retainer head along the entire length of the barrel rollback together with the shutter. The above design has the following disadvantages:

- the presence of a retainer with a beveled tooth creates additional friction surfaces on the bolt, which leads to increased sensitivity of the weapon to pollution;

- the presence of a barrel retainer and sleeve with combat stops complicates the design.

The objective of the present invention is to provide a locking unit of small arms, providing higher reliability and simplicity of design.

The technical result is achieved by the fact that in the locking assembly containing a bolt with three combat stops mounted on the guides of the automation box with axial movement, a barrel with combat stops and a flange protrusion, a screw groove with a straight section, and a cylindrical through hole for installation of the barrel, and the rim of the barrel and the helical groove are a pair:

- on the front plane of the rim of the barrel protrusion additionally made combat focus with the possibility of interaction with one of the combat stops of the shutter.

This technical solution, which provides uniform locking of the barrel with a minimum number of parts, helps to improve reliability.

The foregoing is illustrated by the drawings,

where in FIG. 1 shows a general view of a sectional locking assembly;

 in FIG. 2 shows a top view in partial section along the shutter;

 in FIG. 3 shows a cross section with a view of the combat stops of the barrel and the bolt from the side of the shutter mirror;

 in FIG. Figure 4 shows a cross section along the rim of the barrel, which is also a combat focus, with a view of the screw groove on the automation box.

The locking assembly comprises an automation box 1, a shutter 2, a barrel 3. On the automation box 1, a shutter 2 is mounted on guides 4 with the possibility of axial movement. A window 5 is located at the top of the shutter to reflect the spent sleeve. The barrel 3 is based in the through hole 6 on the automation box 1. Two bolts 7 and 8 are made on the bolt 2. On the barrel there are made military stops 9, 10 and a crack 11. On the front plane of the crack ledge 11 of the barrel, a combat emphasis is made. The combat stop 9 is locked behind the front wall of the window 5 to reflect the spent sleeve. The combat stop 10 is locked for the combat stop 8 of the shutter, and the rim tab 11 of the barrel is locked respectively for the combat stop 7. The rim 11 when the moving parts are in the frontmost position, partially placed in a screw groove 12 with a straight section made on the automation box.

When the bolt 2 rolls back with the barrel 3 relative to the automation box 1, after passing through a straight section, the rutting protrusion 11 interacts with the screw groove 12. The barrel 3 rotates around its axis and the battle lugs of the barrel 3 and the bolt 2 are disengaged. Next, the bolt 2 moves independently of the barrel 3 .

When the shutter 2 rolls at the moment of its contact with the barrel 3, the barrel 3 begins to move forward and interacts with the cracked protrusion 11 with the screw groove 12. As a result of the interaction, the barrel 3 rotates and the fighting stops of the barrel 3 engage with the fighting stops of the shutter 2.

Information sources

1. Patent RU 2138001 C1, IPC F41C 3/00, F41A 5/06, publ. 09/20/1999.

2. Patent RU 2171441 C1, IPC F41C 3/00, F41A 5/06, publ. 07/27/2001.

Claims (1)

A locking assembly comprising a bolt with combat stops mounted on axles of the automation box with axial movement, a barrel with combat stops and a flange protrusion, a screw groove with a straight section and a through hole for installing the barrel, a barrel protrusion of the barrel and a helical groove placed on the automation box a pair, characterized in that on the front plane of the rim of the barrel protrusion additionally made combat focus with the possibility of interaction with one of the combat stops of the shutter.

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