RU2583248C1 - Locking mechanism for small arms - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: invention relates to small arms, specifically to locking mechanisms. Locking mechanism contains lock with a return spring and fire thrusts, as well as locking ring with fire thrusts. Locking ring is intended for manual and lock on a shaft and gate. Locking ring is located in annular groove of barrel receiver on side of breech barrel cut of small arms with turn through locking. Locking combat supports of rotary locking rings have two rows to be arranged between them combat supports of gate and shaft of small arms. Rotary locking ring is provided with holes to fix it in free state during automatic shooting. Guide is connected to gate in form of plates to accommodate recharging handle, and locking ring has T-shaped groove made for reloading handle transition with guide on the rotary lock ring at moment of manual locking.

EFFECT: possibility to use small arms in both automatic shooting and manual mode locking bolt for improvement of accuracy of shots, as well as simplified mechanism of locking bolt in whole.

1 cl, 4 dwg

Description

The invention relates to small arms, in particular to a device for a locking mechanism of small-caliber small arms.

From the prior art it is known small-caliber small arms, selected as an analogue according to patent RU 2506520. In small arms, the locking mechanism is the movable mass of the bolt with return springs. During the shot, the shutter by inertia freely rolls back into position, affecting its movement on the weapon. In this case, the bullet does not have time to leave the barrel. This type of bolt is used in short-barreled weapons, where the bullet manages to leave the barrel before the moving bolt begins to affect the weapon. The disadvantage of an analogue is the low accuracy of fire.

In the prior art, small arms are selected as an analogue according to US Pat. No. 4,547,988. Small arms comprise a locking mechanism consisting of a bolt and a bolt ring with combat stops. The disadvantage of an analogue is the inability to use the automatic firing mode.

The prior art small-caliber small arms, selected as an analogue according to the patent RU 2182303. Small arms contain a locking mechanism consisting of a one-piece shutter with a rotary split gate clutch with combat and leading protrusions. On the receiver combat stops and guide grooves are made, as well as a figured groove for interaction with the leading protrusion of the rotary clutch. A disadvantage of the analogue is the inability to use the manual shutter mode. In addition, when using the design of the locking mechanism, the manufacture of the receiver, in particular from steel, is complicated by locking it on the receiver, and the shutter due to the presence of leading grooves and combat stops.

The technical result of the claimed invention consists in the possibility of using small arms in both automatic shooting mode and with a manual shutter locking mode to improve the accuracy of the shot, and also a simplification of the shutter locking mechanism as a whole is achieved.

The technical result of the claimed invention is achieved by the fact that the bolt in the front has combat stops. On the barrel in the area of the chamber there are also combat stops similar to those on the bolt. Between the bolt and the barrel, namely in the annular undercut of the receiver from the side of the official cut of the barrel of the small arms, there is a rotating rotary locking ring. On the rotary locking ring are reciprocal locking combat stops, which, when the locking ring is rotated, interact with the combat stops on the bolt and barrel. The locking combat stops of the rotary locking ring have two rows for placing between them the fighting stops of the barrel and the bolt. A rotary locking ring located in the annular recess of the receiver from the side of the breech cut of the barrel can take two radial positions due to the two holes made on it and the plunger that sinks into them. In the first position, the bolt and barrel are not engaged with the rotary locking ring and the bolt can move freely, and the barrel can be removed, for example, for a change or repair, such a free state of the bolt is used during automatic shooting. In the second position with manual locking mode, the rotary locking ring locks the bolt and barrel. In addition, a guide in the form of a strap is attached to the shutter to accommodate the reload handle, and the rotary locking ring contains a T-shaped groove made to interact with the shutter guide at the time of manual locking. When the shutter is locked, automatic reloading does not occur at the time of the shot. After firing a shot with the bolt locked, unlocking and cocking takes place manually. Locking the bolt allows for accurate shots and allows you to install a barrel with a tight chamber under small caliber ammunition on the weapon.

The invention is illustrated by the following illustrations:

FIG. 1 - section of the locking mechanism of small arms;

FIG. 2 - view of the bolt, rotary locking ring and barrel in the analysis;

FIG. 3 is a view of an unlocked shutter with a rotary locking ring and a reload handle;

FIG. 4 is a view of a locked rotary locking ring, shutter and reload handle.

The following positions are shown in the illustrations: receiver 1, barrel 2, shutter 3, rotary locking ring 4, return spring 5, reload handle 6, guide 7, plunger 8, plunger spring 9, magazine with cartridges 10.

The locking mechanism of small arms includes a free recoil bolt with combat stops and a rotary locking ring with reciprocal locking combat stops. The shutter is made integral under small-caliber cartridges with annular ignition. The rotary locking ring is located in the annular groove of the receiver from the side of the borehole with the possibility of rotation by a locking angle, while the rotary locking ring at the time of locking is not connected with the shutter. The locking combat stops of the rotary locking ring are made around its circumference and have two rows indented from each other to accommodate between the fighting stops of the barrel and the bolt of small arms. Thus, the locking ring locks itself simultaneously on the barrel and bolt of small arms. Wells are made in the housing of the rotary locking ring for fixing it in positions when the rotary locking ring is not engaged, i.e. is in a free state during automatic firing, and when the reload handle is rotated by the angle of the shutter. The rotation of the locking ring in these positions is carried out due to the spring-loaded plunger installed in the receiver of the small arms. In addition, a guide in the form of a strap is attached to the shutter to accommodate the reload handle. The rotary locking ring contains a T-shaped groove made to interact with the shutter guide and its protrusions at the time of manual locking. In the shutter return springs are made to close the shutter during automatic firing. The rotary locking ring acts as a bolt bolt during firing.

The locking mechanism of small arms is as follows. When sending the first cartridge to the chamber, the shooter can choose either a method of automatic firing mode, in which case reloading will be performed automatically after a shot by pressing the shutter, or the mode of manual locking of the shutter with each shot (classic bolt rifle with a longitudinally sliding rotary shutter). In automatic or semi-automatic mode, the shutter unlocks and moves to the rear position due to the action of powder gases at the bottom of the sleeve and vice versa, locking due to the action of the return spring. With such a movement, the combat stops of the shutter do not contact the locking combat stops on the rotary locking ring. Each time you press the trigger of a small weapon, a shot is fired, and the shutter movement is repeated until the cartridges in the magazine end. In the manual locking mode, the bolt enters the slots of the rotary locking ring with its combat stops. Further, with the reload handle, the rotary locking ring is rotated by a locking angle, blocking the bolt and barrel. After pulling the trigger, a shot occurs, and the shutter is manually unlocked in the reverse sequence, like a classic shutter with a longitudinal sliding rotary shutter. A guide in the form of a strap is attached to the shutter with the possibility of removal, to which the reloading handle is attached during its longitudinal movement. When the shutter is in the extreme forward position, the reload handle, lowering, jumps from the guide onto the T-slot of the rotary locking ring. At the same time, the reloading handle rotates a rotary locking ring, which simultaneously locks onto the barrel and the shutter, while the shutter is static and does not rotate. The shooter can use the manual reload mode constantly based on the situation and accuracy parameters.

Locking the bolt with the barrel on the rotary locking ring allows the receiver to be made of aluminum, which facilitates the manufacture of the receiver and reduces the weight of the rifle. As a rule, locking on classic small-caliber bolt (longitudinally sliding bolt) rifles takes place on the receiver and at a distance of 45-55 mm from the bolt mirror behind the cartridge magazine. To ensure accuracy when shooting from a rifle, it is necessary to precisely maintain the specified size, which leads to a rise in price of both the shutter and the receiver.

Claims (1)

The locking mechanism of small arms contains a bolt with a return spring and combat stops, as well as a rotary locking ring with locking combat stops, characterized in that the rotary locking ring is designed for manual and simultaneous locking of the barrel and bolt, while the rotary locking ring is located in the annular the groove of the receiver from the side of the official cut of the barrel of the small arms with the possibility of rotation by the angle of locking, the locking combat stops of the rotary locking ring have two rows and for placing between them the combat stops of the bolt and the barrel of small arms, holes were made on the rotary locking ring for fixing it in the free state during automatic shooting, while a guide in the form of a bar for accommodating the reloading handle is attached to the bolt, and the rotary locking ring contains T -shaped groove made to move the reload handle from the guide to the rotary locking ring at the time of manual locking.

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