RU177343U1 - Cartridge magazine for small arms - Google Patents

Abstract

The utility model relates to military equipment, in particular to box-shaped plastic cartridge cases for small arms, designed for firing various types of cartridges from 5.45 × 39 to 9 × 39 mm. The cartridge store for small arms includes a plastic box-shaped case with a U-shaped metal an amplifier in the lower part and expanding tides located outside the back and sides, in which grooves are made on the inner side surfaces to accommodate the guide protrusions of the plastic cover in them, with spring and locking plate. The plastic cover contains reinforcement made in the form of a profiled metal plate with flanges on the sides, the edges of which are located inside the guide protrusions of the plastic cover. The fittings are made of steel sheet providing the necessary service strength. The flanges are L-shaped or dovetail-shaped. The reinforcement metal plate is located at the rear of the cover, and its length corresponds to the length of the guide projections of the cover. The metal plate has at least one U-shaped cutout on each side and end side, as well as one additional hole. The technical result is to increase the operational strength, including when used in conditions of low freezing temperatures, as well as the durability of the store in limits of the warranty resource of weapons. 6 c.p. f-ly, 3 ill.

Description

The utility model relates to military equipment, in particular to box-shaped plastic cartridge cases for small arms, designed for firing various types of cartridges from 5.45 × 39 to 9 × 39 mm.

Currently, new challenges are being posed to the developers of modern small arms, and special attention is being paid to ensuring reliability and safety during their operation. An indicator of reliability and safety is considered, inter alia, the operational strength of both the weapon as a whole and its main assembly units and individual structural elements.

One important assembly unit is the plastic box magazine. Such a long-known and widespread type of stores has a traditional design, including a plastic case, a feeder with a spring located inside it, a cover [1]. The store is highly reliable and easy to use. However, in order to meet all the requirements, such designs require continuous improvement and development of such technical solutions, the use of which will achieve the greatest effect.

Also known is a cartridge magazine for small arms (utility model patent RU No. 164808 dated 09/20/2016), which is selected as the closest analogue containing a plastic box case with a U-shaped metal amplifier in the lower part, a plastic cover, a feeder with a spring. The case in the lower part is made with reinforcement in the form of expanding tides located outside the back and sides of the case, in which grooves are made on the inner side surfaces of the store to accommodate the cover guide protrusions in them. The amplifier on the sides at the location of the grooves has an inwardly directed U-shaped profile that completely repeats the shape of the grooves.

The disadvantage of this store is the insufficiently high operational strength of its plastic cover, associated with the destruction of the cover when a weapon falls with an attached equipped magazine onto the store cover at a temperature of minus 50 ° C on a concrete surface.

The technical problem is the creation of small arms, all, without exception, the constituent structural elements of which should ensure reliable and safe operation in various climatic conditions.

The indicated problem is solved with the help of the proposed utility model, according to which the cartridge magazine for small arms includes a plastic box body with a U-shaped metal amplifier in the lower part and expanding tides located outside the back and sides in which grooves are made on the inner side surfaces for placement in them guides of the plastic cover, a feeder with a spring and a locking strip, the plastic cover contains fittings made in the form of a profiled meta plate with flanges on the sides, the edges of which are located inside the guide protrusions of the plastic cover.

In addition, the problem that has arisen will be successfully resolved if individual structural elements have a private form of execution:

- the reinforcement is made of a steel sheet providing the necessary service strength;

- flanging of the metal plate of the reinforcement is made in the L-shape, or have the shape of a dovetail,

- the metal plate of the reinforcement is located in the rear of the lid, while the length of the reinforcement corresponds to the length of the guide projections of the lid;

- the metal plate of the lid reinforcement is made with at least one U-shaped cutout on each side;

- the metal plate of the lid reinforcement is made with at least one U-shaped cutout on each end side;

- at least one additional hole is made in the metal plate of the cover reinforcement.

Achievable technical result consists in a significant increase in strength during impacts and falling of the weapon on the cover of the store, including when operating in negative temperatures up to minus 50 ° C, as well as the durability of the store within the warranty resource of the weapon.

In more detail, the utility model is illustrated by drawings, which depict the following:

FIG. 1 - General view of the cartridge magazine;

FIG. 2 - cover with fittings: a) front view, b) profile view;

FIG. 3 - cover reinforcement: a) front view, b) profile view.

The cartridge magazine for small arms includes a plastic housing 1 having front and rear hooks, a spring 2, a feeder 3, a locking strip 4 and a plastic cover 5 made, for example, of a polyamide composition. A through hole 6 is provided in the lid for accommodating a cylindrical locking protrusion of the locking strip 4, which prevents the lid from spontaneously shifting. On the sides of the lid there are guide projections 7. The lid contains reinforcement 8 made in the form of a profiled metal plate. As the material of the plate, sheet steel can be used, which provides the necessary service strength when throwing and dropping weapons with the attached magazine on a concrete surface from a height of 1.5 meters on the magazine cover. The reinforcement metal plate is made with flanges 9 on the sides. A preferred embodiment of the flanges is a L-shaped or dovetail shape. After pouring, the edges of the flanges are located inside the guide projections 7 of the cover 5 formed of plastic and included in the response grooves of the magazine case 1. Cutouts 10 are made on the sides of the metal plate of the reinforcement 8, and cutouts 11 are made in the end sides. The most acceptable form for making cutouts is a U-shape. In the metal plate of the reinforcement 8 there is a through hole 12 corresponding to the through hole 6 of the plastic cover, and an additional hole 13 is made.

Cartridge store for small arms is as follows.

A feeder 3 with a spring 2 and a locking plate 4 are inserted from below into the store’s case 1 prepared for assembly, a cover 5 reinforced with profiled metal plate 8 is inserted into the grooves of the case with a guiding projections 7, and its position is fixed with a locking plate 4. When the protrusion of the locking plate 4 enters the through hole cover 6, excludes its longitudinal movement. Next, the store is equipped with cartridges of the appropriate caliber, while compressing the spring 2, and inserted into the receiving window of the weapon. During the operation of the weapon, the spring abuts one side on the cover 5, the other side on the feeder 3. As the ammunition is spent, the spring 2 straightens and delivers the next cartridge to the sending line.

If necessary, carry out preventive or repair work, such as cleaning or replacing parts of the store, the cover 5 is removed from the locking plate 4, freeing up access to the interior of the housing 1.

The advantages and advantages of the inventive cartridge magazine, positioning it favorably on the market for similar products, is the presence of a reinforced profiled metal plate of the lid and its structural design, consumer properties of which satisfy the modern requirements for this type of equipment.

Metal reinforcement 8 contributes to a significant increase in the operational strength of the cover and the durability of the product.

The most vulnerable spot of the previously existing unreinforced plastic store cover during falls and impacts of the weapon was the guiding protrusions 7, by which the cover enters into the mating grooves of the case. This was especially revealed during operation in conditions of low negative temperatures, since the plastic material of the lid became brittle. Such destruction is an unacceptable defect.

Flanging 9 on the sides of the metal plate of the reinforcement 8, the edges of which are located inside the guiding protrusions 7 of the plastic cover 5, reinforce it and eliminate dangerous fracture factors. The L-shaped form of flanges or their implementation in the form of a dovetail is the most optimal, as well as technologically and economically justified.

The length of the metal plate of the reinforcement corresponds to the length of the cover guides with which it is fixed in the magazine case and is the optimal geometric size, sufficient to strengthen the guide protrusions of the plastic cover and provide the required throw strength.

The implementation of U-shaped cuts on the side and end sides of the reinforcement, as well as one of the additional holes, contributes to an increase in the contact area between the metal surface of the plate and the internal volume of the lid formed by filling with plastic. This ensures a guaranteed and reliable connection of the fittings with the plastic material of the cover.

The preferred smooth U-shaped shape of the cutouts and the presence of an additional round hole in the metal plate of the reinforcement, into which, when cast in the injection mold, the plastic penetrates, in addition to ensuring reliable fixation of the reinforcement inside the cover, contribute to the elimination of undesirable formation of stress concentrators.

The proposed cartridge magazine for small arms was tested in comparison with the analogue in which the polyamide cover was not reinforced. The tests consisted of repeated throws from a height of 1.5 m frozen at minus 50 ° C store, fully equipped with cartridges and attached to the machine, and ended with a positive result. All covers with fittings passed the test; no deformations or damage were revealed. Moreover, during the control firing after throws, delays and breakdowns during firing was not observed.

The inventive cartridge magazine for small arms is quite simple in design, the reinforcement of the cover with a profiled metal plate is carried out according to the traditional technology of plastic injection.

Thus, the improvement of the design of the cartridge magazine allows without significant additional costs to provide the necessary operational strength and increase its durability within the guaranteed resource, which ultimately uniquely increases the reliability and safety of weapons.

Information sources:

1. "Manual on a small business", Moscow, Military Publishing House, 1985, p. 152.

Claims (7)

1. Cartridge store for small arms, including a plastic box-shaped case with a U-shaped metal amplifier in the lower part and expanding tides located outside the back and sides, in which grooves are made on the inner side surfaces to accommodate the guide lugs of the plastic cover, the feeder with a spring and a locking strip, characterized in that the plastic cover contains reinforcement made in the form of a profiled metal plate with flanges on the sides, the edges of oryh located inside guides the plastic cover. 2. Cartridge store for small arms according to claim 1, characterized in that the reinforcement is made of steel sheet providing the necessary service strength. 3. Cartridge store for small arms according to claim 1, characterized in that the flanges of the reinforcing metal plate are L-shaped or have a dovetail shape. 4. Cartridge store for small arms according to claim 1, characterized in that the metal plate of the reinforcement is located in the rear of the lid, the length of the reinforcement corresponding to the length of the guide projections of the lid. 5. A cartridge magazine for small arms according to claim 1, characterized in that the metal plate of the cover reinforcement is made with at least one U-shaped cutout on each side. 6. Cartridge store for small arms according to claim 1, characterized in that the metal plate of the lid reinforcement is made with at least one U-shaped cutout on each end side. 7. Cartridge store for small arms according to claim 1, characterized in that at least one additional hole is made in the metal plate of the cover reinforcement.

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