RU2482417C1 - Automatic small arms with balanced automatics - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: automatic small arms with balanced automatics comprise a barrel box with telescopically installed bolt carrier and beam joined to each other with rack-and-pinion gearing with the help of a carriage with sprockets, return mechanism parts: a bracket with elements of fixation on the barrel box and a return spring installed between the bolt carrier and the bracket. The carriage has an extended part in the form of a rod, onto which the return spring is put on. At the end of the rod there is a T-shaped ledge, which enters into the responsive T-shaped slot made in the bracket. Non-dismountability of connection between the carriage and the bracket is ensured with the return spring, one of the ends of which is installed into the groove on the bracket at the right angle to the profile of the slot, preventing exit of the rod from the bracket.

EFFECT: improvement of automatic small arms, simplified procedure and reduced labour intensiveness of weapon disassembly and assembly.

4 dwg

Description

The invention relates to defense technology and is aimed at improving automatic small arms.

Known automatic small arms with balanced automation in the modification of the 5.45 mm machine gun AEK-971, containing a receiver with telescopically mounted shutter frame and a balancer, interconnected by gear-rack gearing with a carriage with asterisks, as well as details of the return mechanism : return spring and bracket with mounting elements on the receiver (http://spec-nas.org/forum/forum21/topic 1133 /), adopted as a prototype.

The disadvantage of the prototype is the large number of operations that must be performed to remove moving parts from the weapon: first you need to remove the lid, detach the return mechanism in detail, disconnect the retainer holding the carriage inside the receiver and only then, together with the carriage, remove the bolt frame and balancer. During assembly, it is necessary to pay attention to the position of the carriage, which should occupy a certain place inside the receiver for subsequent attachment of the contactor to it. All this complicates the design and, as a result, makes disassembly difficult.

The invention solves the problem: the creation of such a weapon design that would simplify its maintenance by reducing the complexity of disassembling (assembling) operations and eliminating the detachable separation of the elements of the mobile system, making disassembling (assembling) as simple and convenient as possible.

The technical result obtained by carrying out the invention consists in assembling the parts of the moving parts and the return mechanism into a single integral unit, detachable from the weapon during disassembly as a whole, and refusing to use a contactor, which simplifies the procedure and reduces the complexity of disassembly.

The specified technical result is achieved in that in an automatic small arms with balanced automation, containing a receiver with telescopically mounted shutter frame and a balancer, interconnected by gear-rack gearing with a carriage with asterisks, and also details of the return mechanism: bracket with elements mounting on the receiver and the return spring installed between the bolt and the bracket, new is that the carriage has an elongated part in the form of a rod, and which is equipped with a return spring, and at the end of the rod a T-shaped protrusion is made, which enters into the reciprocal T-groove made in the bracket, while the integral connection of the carriage and the bracket is provided by a return spring, one of the ends of which is installed in the recess on the bracket under the straight angle to the groove profile, preventing the rod from exiting the bracket.

Thus, all the elements of the mobile system, including the return mechanism, are combined into a single unit, detachable from the weapon in one-piece form. In it, the carriage with its elongated part is connected to the bracket. Due to the existing rigid connection of the bracket with the receiver, the same connection is provided between the carriage itself and the receiver. In this case, there is no need for a contactor, which is excluded from the design.

Based on the foregoing, we can conclude that the proposed technical solution has a "novelty" and "inventive step".

The invention is illustrated by drawings, where:

- figure 1 shows the layout diagram of an automatic small arms (shown a fragment of the receiver with a block of moving parts);

- figure 2 - cross section aa (return spring is not shown);

- figure 3 - carriage with asterisks;

- figure 4 - block moving parts, after disconnecting it from the receiver.

Automatic small arms (figure 1) contains a receiver 1, in which the bolt frame 2 and the balancer 3 are installed. The balancer 3 has the shape of a pipe. It is placed inside the shutter frame 2, also having a tubular structure. On the side walls of the shutter frame 2 and the balancer 3, uniform rows of through holes 4 and 5 are made, which serve to engage the teeth of the sprockets 6. The sprockets are mounted on the axles 7 in the carriage 8. The carriage 8 is placed inside the balancer 3. It has an elongated part in the form of a rod 9 , at the end of which there is a T-shaped protrusion 10. The response T-shaped groove is made on the bracket 11. The end of the rod 9 is inserted into the groove on the bracket 11 and fixed in it from falling out by the return spring 12, for which one end of the spring is installed in the recess 13 on bracket 11 under pr the right angle to the groove profile. Since the narrow part of the groove is smaller than the diameter of the spring 12, the movement of the end of the spring across the bracket is impossible. Thus, the spring 12, covering the rod 9, from the outside prevents its exit from the T-shaped groove (figure 2). The other end of the spring 12 is pressed against the bolt frame 2.

The bracket 11 has a rigid connection with the receiver 1. For example, in this scheme, this is provided by a rotary check 14 mounted on the receiver 1. In the locked position, the check 14 enters the reciprocal recess 15 on the bracket 11, preventing it from moving along the receiver 1.

After opening the checks 14, the bracket 11 is disconnected from the receiver. Now, in the absence of a contactor, the entire block of moving parts is easily removed from the receiver, while maintaining the integrity of the structure (figure 4).

The new technical solution was checked by ZID OJSC in the manufacture of a new modification of the AEK-971 assault rifle.

Claims (1)

Automatic small arms with balanced automation, containing a receiver with telescopically mounted shutter frame and a balancer, interconnected by gear-rack gearing with a carriage with asterisks, as well as details of the return mechanism: an arm with mounting elements on the receiver and a return spring, installed between the bolt frame and the bracket, characterized in that the carriage has an elongated part in the form of a rod, on which a return spring is worn, and at the end of The T-shaped protrusion made in the mating T-groove made in the bracket is made, the integral connection of the carriage and the bracket is provided by a return spring, one of the ends of which is installed in the recess on the bracket at right angles to the groove profile, preventing the rod from exiting bracket.

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