RU2658196C1 - Small arms - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: invention relates to armament, namely to small arms. Small arms comprise a barrel receiver with a barrel, a rigidly fixed guide tube, a recharge mechanism including a bolt carrier, a movable forearm. Bolt carrier is equipped with a tip with a transverse hole, into which the forearm axis, which connects the tip to the forearm, is installed. On the lateral sides of the tube there are slots having an extended end facing the barrel receiver. On the forearm axis, ring grooves are made with the possibility of longitudinal movement along the slots.

EFFECT: reliability of the mechanism for recharging small arms is increased.

1 cl, 5 dwg

Description

The invention relates to the field of armament and can be used in small arms with reloading with a movable forend.

Known hunting rifle "Bekas" (J. "Kalashnikov. Weapons, Ammunition, Equipment", No. 4, 2000, p. 20-23), containing a receiver with a barrel, underbarrel tubular magazine, reloading mechanism, including a bolt frame, movable forend connected to the bolt.

The disadvantage of this sample is the low reliability of the reloading mechanism due to the connection of the forend with the bolt using two rods. For technological reasons, it is difficult to ensure an equal length of rods, therefore, when reloading, skew and increased friction of the bolt against the receiver guides are possible, which makes it difficult to reload weapons.

Known hunting rifle MP 133 (http://www.baikalinc.ru/res_ru/0_value_7735_192.pdf), containing a receiver with a barrel, reloading mechanism, including a shutter frame, a movable forend. Under the barrel is a tubular magazine along which the forend connected to the bolt moves. The bolt is connected to the forearm by means of a long rod located between the forearm and the tubular magazine.

The disadvantage of this sample is the low reliability of the mechanism of reloading weapons due to the connection of the bolt with the forearm using a long rod. Since the thrust is located openly, when moving over rough terrain, for example through the forest, a foreign object (knot) can fall into the thrust and make reloading difficult or jam the reloading mechanism.

The technical task of the invention is to increase operational characteristics, namely improving the reliability of the mechanism of reloading small arms.

The technical result consists in ensuring unimpeded movement and eliminating jamming of the movable forearm for reliable and quick reloading of small arms with reloading by the movable forearm.

The problem is achieved in that the small arms contain a receiver with a barrel, a guide tube, a reloading mechanism, including a bolt frame, a movable forend. The bolt frame is equipped with a tip with a transverse hole in which the forend axis is mounted connecting the tip with the forearm, grooves are made on the sides of the guide tube having an expanded end facing the receiver, and annular grooves are made on the forearm axis with the possibility of longitudinal movement along the grooves.

The invention is illustrated by drawings, which depict:

in FIG. 1 - general view of small arms;

in FIG. 2 - bolt frame with shutter, stem and tip;

in FIG. 3 is a section AA in FIG. one;

in FIG. 4 - longitudinal section of the weapon;

in FIG. 5 - axis of the forend with annular grooves.

Small arms contain a receiver 1 with a barrel 2, a guide tube 3, a magazine 4, a reloading mechanism including a bolt frame 5 with a bolt 6 and a rod 7, a movable forend 8 with a base 9. The rod 7 of the bolt frame 5 is equipped with a tip 10 with a transverse hole 11 , in which the axis 12 of the forend is installed. An axis 12 of the forearm connects the tip 10 of the bolt frame 5 with the forearm 8. On the axis 12 of the forend there are annular grooves 13. The guide tube 3 is rigidly fixed between the aiming block 14 and the gas chamber 15. On the sides of the guide tube 3 there are longitudinally closed grooves 16, in which placed annular grooves 13 of the axis 12 of the forend. The longitudinal closed grooves 16 have an expanded end 17 facing the receiver 1. The extended end 17 of the grooves 16 is made with a size exceeding the diameter of the forearm axis 12. For ease of assembly, the forend axis 12 has a shoulder 18.

Before loading small arms forend 8 is in the front position. When loading, it is necessary to attach the magazine 4, remove the weapon from the fuse and push the forend 8 back, which moves along the base 9, which is rigidly fixed on the barrel 2. When moving the forearm 8, the annular grooves 13 of the axis 12 of the forearm move along the longitudinal grooves 16 of the guide tube 3, the edges of the annular grooves 13 prevent the transverse movement of the axis 12 of the forearm, protecting it from falling out. When moving the fore-end 8 forward to the stop, the shutter 6 sends the next cartridge into the chamber and locks the bore 2.

To unload the weapon, it is necessary to disconnect the magazine 4, the forend 8 to push back all the way, while the spent sleeve or cartridge sent to the chamber are removed from the chamber.

To disassemble the weapon, it is necessary to remove the receiver cover and separate the return mechanism with the stroke limiter of the bolt frame (not shown in the drawings), while the reloading mechanism is able to move back all the way to the extended end 17 of the grooves 16 of the guide tube 3. Ring grooves 13 of the axis 12 of the forearm come out of the grooves 16 of the guide tube 3, and the axis 12 of the forearm is removed in the transverse direction, and the bolt frame 5 with the rod 7 and tip 10 is moved back to the stop in the back of the receiver 1 and is separated from the weapon.

The proposed design of small arms allows to increase operational characteristics, namely the reliability of the reloading mechanism, by ensuring unimpeded movement and eliminating jamming of the moving forearm for reliable and quick reloading of small arms with reloading by the moving forearm.

Claims (1)

Small arms containing a receiver with a barrel, a rigidly fixed guide tube, a reloading mechanism including a bolt frame, a movable forend, characterized in that the bolt frame is provided with a tip with a transverse hole in which the forearm axis is mounted, connecting the tip with the forearm, on the sides the tubes have grooves having an expanded end facing the receiver, and annular grooves are made on the forearm axis with the possibility of longitudinal movement along the grooves.

Images