RU2532011C1 - Valve mechanism of air weapon - Google Patents

Abstract

FIELD: weapons and ammunition.

SUBSTANCE: valve mechanism includes a body with a valve located in it, a stock, a spring, a plug, a screw and a sealing ring. The sealing ring is arranged between the body and a gas bottle, and the spring is arranged between the valve and the plug. The stock and the valve are separated from each other; besides, the stock contacts the valve and is a locking element of a flow passage between the valve and the stock for movement of gas from an inner cavity between the valve and the plug after stroke of a gun hammer against the stock. After the stroke against the stock, pressure in the inner cavity is lower than pressure in the gas bottle.

EFFECT: achieving reduction of striking energy against the stock; reducing the weight of impact weight and force of cocking, as well as reducing cocking arm length.

2 cl, 3 dwg

Description

The invention relates to pneumatic weapons, in particular to a valve mechanism for pneumatic weapons.

Known valve mechanism used in various samples of pneumatic weapons according to patent RU 2169331 C1, 06/20/2001, selected as the closest analogue (prototype). In the process, the valve mechanism of the pneumatic weapon opens briefly, cutting off a portion of gas for firing a shot by hitting the valve stem. The disadvantage of this valve mechanism is that in order to produce a shot, it is necessary to overcome the gas pressure on the valve in the gas cylinder by hitting the rod, and since the energy of the shot is directly proportional to the energy spent to initiate the shot, it is necessary to accumulate energy for charging the rod, charging the spring loaded shock mass. Therefore, to produce a shot with a muzzle energy of more than 7.5 J, either a large cocking arm or a large effort to cock the shock mass is necessary.

The technical result of the claimed invention is to reduce the impact energy on the rod, reducing the weight of the shock mass and the cocking force, as well as reducing the length of the cocking arm.

The technical result is ensured by the fact that the pneumatic weapon contains a gas cylinder with compressed gas. The valve mechanism of a pneumatic weapon, comprises a valve body, a stem, a valve, for example, made of plastic, a spring, a plug, a screw, a seal ring. The seal ring is located between the housing and the gas bottle. By means of screws, a valve body is connected to the gas cylinder, in which a bypass hole is made, and a cylindrical hollow section with drain holes. A spring is placed between the stem and plug. The plug is connected to the housing through a thread or other detachable mount. The stem with the valve are made separately from each other. Between the valve and the stem there is a passage section (exhaust gap) for gas to pass into the bypass hole from the internal cavity located between the valve and the plug. The rod is in contact with the valve and is a locking element of the passage section. After impact, the stem, overcoming gas pressure, moves away from the valve and compresses the spring. In this case, a gap is formed between the valve and the rod, into which gas rushes from the internal cavity between the valve and the plug. When the pressure in the internal cavity decreases significantly and becomes less than the pressure in the gas cylinder, the valve will begin to move under the action of gas pressure in the gas cylinder, opening a completely bypass hole.

The invention is illustrated by the following illustrations:

figure 1 is a longitudinal section of a valve;

figure 2 is a longitudinal section of the valve at the time of impact;

figure 3 is a longitudinal section of the valve at the time of opening.

The device contains a gas cylinder 1, body 2, stem 3, valve 4, spring 5, plug 6, screw 7, O-ring 8, drain holes 9, thread 10, passage 11, bypass hole 12.

Valve airgun works as follows.

In the gas cylinder 1, the injection of gas creates the pressure necessary for the shot. The housing 2 by means of screws 7 is connected to a gas cylinder 1 with a sealing ring 8. In the hollow cylindrical part of the housing 2 there is a plastic valve 4, which is pressed against the housing 2 and closes the bypass hole 12. The valve 4 presses the rod 3, which acts on the spring 5 and which overlaps the bore 11. The stem 3 extends beyond the dimensions of the housing 2. The pressure created in the cavity of the gas cylinder 1 also presses the valve 4 and the stem 3. The spring 5 rests on the other end in the plug 6, which is connected to the core by means of a threaded connection pus 2. On the protruding end of the rod 3 is hit with a trigger, hammer or other shock mass. After impact, the rod 3 begins to move, overcoming the pressure of the gas and the spring 5. This opens the bore 11, and the compressed gas from a small cavity between the valve 4 and the plug 6 rushes into the bypass hole 12. At this moment, the gas pressure force acting on the valve closes 4, is replaced by the gas pressure force, which presses on the opening, because at this moment due to the discharge of gas by the rod 3, the pressure in the cavity is less than the pressure in the storage cylinder 1. As a result, the valve 4 opens and the compressed gas flows through the drain holes 9 poured into the bypass hole 12. Then follows a shot. After the shot, the valve 4 and the stem 3 are closed from the action of the gas pressure force, which seeps through the thread 10 and other gaps of the leaky connection into the cavity between the valve 4 and the plug 6. The valve 4 and the stem 3 are returned to their original position.

For firing a shot, a large kinetic energy of the shock mass is not required, since a small pressure force acts on a small rod 3 by several times less pressure than on the main valve 4. In this case, the opening of the rod 3 entails the opening of the valve 4.

Claims (2)

1. The valve mechanism of a pneumatic weapon, comprising a housing with a valve located therein, a rod, a spring, a plug, a screw, a sealing ring located between the housing and a gas cylinder, characterized in that the stem and valve are made separately from each other, while the rod is in contact with the valve and is a locking element of the passage section made between the valve and the rod for moving gas from the internal cavity between the valve and the stopper after the hammer is hit on the rod. 2. The valve mechanism according to claim 1, characterized in that after hitting the rod, the pressure in the internal cavity is less than the pressure in the gas cylinder.

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