RU2192595C1 - Mechanism adjusting flow of gases in automatic arms - Google Patents

Abstract

FIELD: weapons. SUBSTANCE: mechanism adjusting flow of gases in automatic arms makes it possible to adjust reloading effort to required value automatically in process of small arms fire with cartridges forming various pressures in bore. Mechanism adjusting flow of gases in automatic arms has barrel with gas outlet, gas chamber housing piston. Piston is joined to lock carrier in which lock is located. Mechanism includes return spring and recoil delaying spring placed between lock carrier and lock. Compression effort of recoil delaying spring is greater than compression effort of return spring. EFFECT: simplified design and increased functional reliability of automatic arms. 2 dwg

Description

 The invention relates to weapons technology, and in particular to mechanisms for adjusting the gas of automatic weapons, which automatically adjusts the reloading gain to the required value when firing cartridges that create various pressures in the barrel.

 Known mechanism for adjusting the gas gun "Beretta", Mod. AL 390 (catalog of the company "Beretta", "470 YEARS", 1997, p. 14), taken as a prototype, containing a gas cylinder (chamber), a gas outlet, a piston, a valve made in the form of a flat disk and exhaust holes.

 The adjustment of the gases occurs due to the fact that with a weak cartridge, all the gases entering the gas cylinder through the gas outlet are used for the reloading force. With an average cartridge, excess gases open the valve and exit through some of the exhaust outlets closest to the valve. With a strong cartridge, excess gas escapes through a valve that moves a considerable distance from the seat, and exits through multiple openings.

 This technical solution has complexity, which is a definite disadvantage in the presence of a control valve, consisting of the valve itself, a spring, a seat, exhaust holes and an adjusting head. The presence of a complicated design of the control valve adversely affects the performance of the entire product.

 Creating a product with a simple design, and with this increases reliability is the main task of the designer.

 This problem is solved using the gas flow control mechanism of an automatic weapon containing a barrel with a gas outlet, a gas chamber with a piston connected to the bolt frame, a return spring and a bolt, while this mechanism is equipped with a recoil delay spring located between the bolt and the bolt frame, the force the compression of which is greater than the compression force of the return spring, while the piston is placed in the gas chamber with the possibility of blocking the gas outlet.

 The use of this invention can significantly simplify the mechanism for adjusting the gas flow, because adjustment is carried out directly by the piston, due to inertial forces and recoil forces of the weapon when fired. This design does not require additional nodes for adjusting the gas flow.

 The invention is illustrated in the drawing, where in FIG. 1 shows a general view of the device, FIG. 2 - a gas chamber assembly with a piston and a gas outlet.

 The mechanism for adjusting the gas flow of automatic weapons contains a barrel 1 with a gas outlet 2, a gas chamber 3 in which the piston 4 is located. The piston 4 is connected to the bolt frame 5, in which the shutter 6 is located. The mechanism contains a return spring 7 and a recoil delay spring 8 located , for example, between the shutter frame 5 and the shutter 6. In this case, the compression force of the recoil delay spring 8 is greater than the compression force of the return spring 7.

 The mechanism works as follows.

 When fired, the projectile accelerates along the barrel 1, and the weapon accelerates in the opposite direction, the so-called “recoil” of the weapon occurs. In this case, all parts rigidly fixed to the barrel 1 move backward. The bolt frame 5 and the piston 4, which are not rigidly connected to the barrel, having an inertial mass during recoil are delayed in place, due to the possibility of compression of the recoil delay spring 8. Moving, the gas chamber with the gas outlet 2 is pushed onto the piston 4, and at the moment of release of the gas outlet 2 there is a gap between the piston 4 and the wall of the gas outlet 2, through which, during the passage of the projectile the distance from the gas outlet 2 to the muzzle of the barrel 1, the gas chamber 3 is filled with powder g basics, and at this time, under the action of the recoil delay spring 8 and the pressure of the powder gases, the bolt frame 5 with the bolt 6 begin to move to their extreme rear position, reflecting the spent sleeve along the path. The energy of the compressed recoil delay spring 8 is summed with the energy of the powder gases entering the gas chamber 3. After the shutter frame 5 reaches its extreme rear position, the shutter frame 5 moves to the forward position by the action of the return spring 7, capturing another cartridge from the chamber. When you press the trigger again, the cycle repeats. The more powerful the cartridge, the stronger the recoil, the stronger the recoil delay spring 8 is compressed, the more the gas outlet 2 is blocked. With a weak cartridge, the recoil is “small”, the gas outlet does not overlap and the maximum amount of gas enters the gas chamber 3. The sum of the energies of the powder gases and the force of the recoil delay spring 8 at various impulses of cartridges is approximately the same, sufficient and necessary for reloading the gun.

Claims (1)

 The mechanism for adjusting the gas flow of automatic weapons, comprising a barrel with a gas outlet, a gas chamber with a piston connected to the bolt frame, a return spring and a bolt, characterized in that the mechanism is equipped with a recoil delay spring located between the bolt and the bolt frame, the compression force of which is greater, than the compression force of the return spring, while the piston is placed in the gas chamber with the possibility of blocking the gas outlet.

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