KR100935087B1 - 40㎜ training bullet - Google Patents

Abstract

PURPOSE: A 40 millimeter training bullet is provided to significantly lower firing failure by activating a pestle to ignite a second blasting cap which detonates an explosive agent. CONSTITUTION: A 40 millimeter training bullet consists of an empty cartridge part(60) and a warhead(50). The empty cartridge part comprises an empty cartridge(1) in the shape of a cup, a propellant(3), and a first blasting cap(5). The first blasting cap is connected to the propellant and located in the lower part of the empty cartridge. The warhead comprises a skirt(6) in the shape of a cup, an empty cartridge(21), a warhead body(7), a fire-extinguishing smoke generating agent(20), an explosive agent(17), a second blasting cap, and a pestle(11). The warhead body is inserted into the skirt and combined with the warhead. The second blasting cap is connected to the explosive agent and located inside the skirt. The pestle is located inside the skirt and strikes the second blasting cap.

Description

40 mm practice grenade {40㎜ training bullet}

The present invention relates to a 40mm practice grenade.

The 40mm grenade is a type of military weapon that can be fired using a grenade launcher to kill lives or destroy light armor. The 40mm grenade used for actual combat is so destructive that it is difficult to use for military training. In particular, dryers are limited in their use due to the possibility of fire. In addition, the conventional 40mm practice grenade has always contained the possibility of misfire according to the target because the bullet body explodes only by the impact by the target. As a result, military training requires 40mm practice grenade, without the same destructive force as real grenade, with similar grenade and smoke performance, and no drastic fire. In addition, the warhead and warhead body of the conventional 40mm practice grenade does not decompose for a long time may cause environmental pollution.

It is therefore an object of the present invention to provide a 40mm practice grenade capable of exhibiting a drooping and smoke performance similar to or better than a real 40mm grenade with little chance of misfire.

Another object of the present invention is to provide a 40mm practice grenade that can significantly reduce or almost eliminate the possibility of fire caused by a drunking agent even in adverse conditions such as a dryer.

It is another object of the present invention to provide an environmentally friendly 40mm practice grenade that can minimize or eliminate the possibility of environmental contamination due to the warhead and / or warhead body of the 40mm practice grenade.

40 mm practice grenade according to the present invention for solving the above problems, the protrusion is formed into the inner side of the upper end of the cup-shaped casing, the propellant is located in the inner lower portion of the casing, and the propellant is located in the lower portion of the casing An casing including a first primer; And a cup-shaped skirt formed at an outer side of the casing and having a coupling groove into which the protrusion is fitted, a warhead coupled to the top of the skirt, a warhead body inserted into the skirt and coupled to the warhead, and A fire extinguishing agent and a squeezing agent sequentially positioned from the inner front of the warhead, a second primer connected to the squeezing agent and positioned inside the skirt, and a ball located within the skirt and striking the second primer when an object collides. It includes a body part including.

Inside the fire extinguishing agent is preferably embedded one or more compressed second springs which prevent hardening. The second spring further increases the scattering causticity of the extinguishing smoke agent during the explosion of the body part, making it easier to observe the explosion and significantly lowering the possibility of a fire caused by the detonating agent.

In the present invention, the fire extinguishing smoke agent and the drinking agent are partitioned by a stopper.

The drinking agent may be selected solely from the group consisting of nitrocellulose, nitroglycerine, and diphenylamine, or may be a selective mixture thereof.

The fire extinguishing agent may be a mixture consisting of a fire extinguishing agent and a pigment.

At least four protrusions may be formed on the inner circumferential surface of the casing after the coupling, and in this case, the coupling grooves are formed on the outer circumferential surface of the skirt by the number of the protrusions at positions corresponding to the protrusions.

The protrusion and the coupling groove may preferably be formed or coupled by staking.

The side surface of the protrusion and the inner surface of the casing may form a right angle, and the inner surface and the bottom surface of the coupling groove may form a right angle.

The 40 mm practice grenade may further include an adhesive applied along one circumference adjacent to the coupling groove of the skirt. The adhesive is preferably THIOKOL LP2.

The body portion, a warhead body is inserted into the skirt and coupled to the warhead; An ignition cup into which the second primer is inserted in an upper portion of the warhead body; A ball insertion tube positioned in a lower portion of the ignition cup in the lower part of the warhead body and having an opening through which the ball is inserted and a sink of the ball can be passed through an upper end thereof; And an elastic means, preferably a spring (first spring), inserted between the ignition cup and the ball insertion tube in the warhead body.

The body part may further include a cushioning material interposed between the skirt and the warhead body at an inner bottom of the skirt. Here, the buffer material may be paper.

40 mm practice grenade according to the present invention, when the ball hits an object, such as the ground, the ball is activated to ignite the second primer to explode the detonator connected thereto, it is possible to significantly reduce or eliminate the probability of misfire.

In addition, the 40 mm practice grenade according to the present invention is selected from the group consisting of nitrocellulose, nitroglycerine, and diphenylamine as a scavenger alone, and thus contains 40 mm of actual grenade. It may be similar to grenades.

Furthermore, since the fire extinguishing smoke agent is disposed in front of the drink extinguishing agent in the 40 mm practice grenade according to the present invention, it is possible to more effectively exhibit smoke performance along with the drink performance of the compression spring. The rapid spreading of fire extinguishing smoke spreads extensively, doubling the visual identification by the observer and significantly reducing or eliminating the potential for fires caused by binge drinking.

As used herein, the terms "top" and "bottom" shall be understood as the top of the firing front side and the rear of the firing rear side of the 40 mm practice grenade relative to the direction in which the 40 mm practice grenade is fired unless otherwise specified. . In the drawings, the upper part may be understood as the upper part and the lower part as the lower part.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments introduced herein are provided to ensure that the disclosed subject matter is thorough and complete, and that the spirit of the present invention to those skilled in the art will fully convey.

1 is an exploded cross-sectional view of a 40mm practice grenade according to a preferred embodiment of the present invention, FIG. 2 shows a coal body portion of the 40mm practice grenade shown in FIG. 1, and FIG. 3 shows a 40mm practice grenade shown in FIG. 1. The shell of the grenade is shown.

Referring to Figure 1, the 40mm practice grenade according to the present invention includes a unit 50 and a casing 60.

Referring to FIG. 2 together with FIG. 1, the coal body portion 50 of the 40 mm practice grenade includes a cup-shaped skirt 6 and a streamlined warhead 21 coupled to an upper end of the skirt 6. do.

Inside the warhead 21 is provided with a fire extinguishing agent 20, the upper portion of the warhead body 7 is provided with a drool 17. The drool 17 and the fire extinguishing agent 20 are separated by a stopper 18 as shown, and the drool 17 is provided at the rear of the fire extinguishing agent 20 on the basis of the firing direction.

Inside the fire extinguishing agent 20, one or more second springs 19 in a compressed state are arranged as shown. The second spring 19 in the compressed state is embedded in the fire extinguishing agent 20 in a compressed state, and when the 40 mm practice grenade explodes, they are decompressed, that is, by their rapid expansion. ) Can be spread widely to give the observer a greater chance of visual identification. Moreover, it is possible to prevent fires which may be caused by the drool 17 by their widespread extinguishing power.

The skirt 6 may be made of a metal or alloy of metal, for example aluminum. Coupling grooves 34 may be formed in a portion of the outer lower portion of the skirt 6.

The warhead 21 may be formed of, for example, a biodegradable plastic material. The warhead 21 functions to reduce resistance during flight and maintain posture stability. The warhead 21 is filled with a fire extinguishing agent 20 from the front. The fire extinguishing agent 20 and the drinking agent 17 are partitioned by a stopper 18. Fire extinguishing smoke 20 is embedded with a second spring 19 in a compressed state as shown.

A warhead body 7 is inserted into an inner lower portion of the bullet body 50 and is coupled to a lower end of the warhead 21. An overlying agent 17 is provided above the warhead body 7, and the fire extinguishing agent 20 provided in the warhead 21 is partitioned for the stopper 18 as shown.

The warhead body 7 may be formed of, for example, a biodegradable plastic material.

The drooping agent 17 is a lead-free powder and is selected from the group consisting of nitrocellulose, nitroglycerine, and diphenylamine, alone or as an optional mixture thereof. It can indicate performance.

An opening 32 is formed at an upper end of the ball insertion tube 13. An interior of the warhead body 7 has an empty space, an ignition cup 15 is inserted in an upper portion of the empty space, and a ball insertion tube 13 is inserted in the lower portion. The second primer 16 is inserted into the ignition cup 15 to be connected to the sound absorbing agent 17. The lower end of the second primer 16 is exposed to the lower portion of the ignition cup 15. The second primer 16 is a blow-type primer, for example, KM35, and contains a gunpowder component. The ball nest 12 is inserted into the ball insertion tube 13, and the ball 11 is located in the ball nest 12. The upper end of the ball 11 is protruded pointed sinking. The lower end of the ball 11 is coupled to the support washer 10. An elastic means 14 is inserted between the ignition cup 15 and the ball insertion tube 13 in the warhead body 7. The elastic means 14 may be, for example, a spring (referred to as a 'first spring' as distinct from the second spring). By means of the elastic means 14, the ball 11 is safe from hitting the second primer 16 when handling the 40mm practice grenade. The bottom of the base of the inside of the skirt (6), the buffer material (8) is inserted between the warhead body 7 and the hibiscus root 6 and a cushioning body of the warhead (7). The cushioning material 8 may be paper, for example. The balls 11 may be formed of a metal such as copper or an alloy thereof.

Unexplained reference numeral 9 denotes an ignition cylinder.

Referring to FIG. 3 together with FIG. 1, the casing portion 60 of the 40 mm practice grenade includes a casing 1 in the form of a cup. The propellant cup 2 into which the propellant 3 is inserted is located in the lower part of the casing 1, and the propellant 3 is connected to the first primer 5 located at the lower end of the casing 1. . The first primer 5 is fixed by a base plug 4 coupled to the lower end of the casing 1. The propellant 3 may be selected from the group consisting of nitrocellulose, nitroglycerine, and diphenylamine, or may be a selective mixture thereof. The first primer 5 may be the same as the second primer 16. At least four holes 30 are formed in the side wall of the propellant cup 2.

4 is a cross-sectional view of the 40 mm practice grenade 100 of the present invention in which the coal body portion and the shell portion shown in FIG. 1 are combined. Hereinafter, referring to FIG. 4, a method of coupling the body 50 and the shell 60 is described.

Referring to FIG. 4, an adhesive 22 is applied along one circumference adjacent to the coupling groove 34 in the lower portion of the body part 50, that is, the skirt 6. As a representative example of the adhesive 22, mention may be made of thicol. The adhesive 22 has a casing when the pressure inside the casing 1 is increased by the waterproof (watertight) function and the ignition of the propellant 3 after the body part 50 and the casing part 60 are combined. 1) It has a sealing function to facilitate pressure formation inside. After the adhesive 22 is applied, the projecting portion 36 is formed at the position of the engaging groove 34 by staking after the body 50 is tightly fitted into the casing 60. . Here, the staking means that the casing 1 and the skirt 6 are simultaneously pressed (taken off) from the outside by a mechanism such as a punch while the casing 1 and the skirt 6 are coupled to each other. The engaging groove 34 may be formed on the outer surface of the skirt 6 before the staking operation, or simultaneously with the protrusion 36 by the staking operation after the staking operation. It can be formed to engage. The coupling grooves 34 and the protrusions 36 may be formed at four positions, for example, at an interval of 90 ° and at an outer circumference of the skirt 6 and an inner circumference of the casing 1, respectively. The side surface of the protrusion 36 and the inner surface of the casing 1 may form a right angle, and the inner surface and the bottom surface of the coupling groove 34 may form a right angle. As a result, the body part 50 and the shell part 60 may be firmly and firmly coupled.

4 and 5 will be described with reference to FIGS. 4 and 5 to operate after the coal body 50 and the casing 60 are coupled. Figure 5 is a cross-sectional view showing the operation of the ball when colliding with the body portion of the 40mm practice grenade of the present invention.

Referring first to Figure 4, 40mm practice grenade 100 according to the present invention is inserted into the grenade launcher. When the sinking device such as the grenade launcher hits the first primer 5 of the 40 mm practice grenade of the present invention, the first primer 5 is ignited as if it exploded. This exploits the property of explosives and ignition when gunpowder is subjected to physical shock. When the first primer 5 is ignited, the propellant 3 connected thereto is ignited. As the propellant 3 is ignited and burned, a gas containing nitrogen is generated, and these gases are introduced into the casing 1 through the holes 30 of the propellant cup 2. This increases the pressure in the casing (1). At this time, there is no pressure leakage phenomenon by the adhesive 22. When the pressure in the casing 1 is sufficiently high, the body part 50 is separated from the casing part 60 by this pressure.

Referring to FIG. 5, when the body part 50 is blown against and hits an object 102 such as the ground, the warhead body may be compressed while the elastic means 14 in the body part 50 are compressed by the impact. The ball 11 in the nest 12 is inserted into 7) to hit the second primer 16 through the opening 32 of the insert tube (13). As a result, the second primer 16 is ignited as if it exploded, and the detonating agent 17 connected to the second primer is exploded.

Although the bombardment 17 may explode only by the impact when the body portion 50 strikes an object 102 such as the ground, the bombardment 17 does not explode if such an impact occurs. If not, the explosives 17 are exploded by the sinking by the ball 11, 40mm practice grenade 100 according to the present invention is to significantly reduce or almost eliminate the possibility of misfire.

On the other hand, the warhead 21 is a fire smoke screen agent at the same time as the second spring 19 in the compressed state while the warhead 21 is shock scattered by the impact when hit the object 102, such as the ground (20) to make it easy to observe and the smoke extinguishing smoke agent 20 is blown at the same time as the explosion of the drink material (17) can significantly lower or almost eliminate the possibility of fire by the drink material (17).

Further, in the present invention, the warhead 21 and the warhead body 7 are formed of a biodegradable plastic material, which is very environmentally advantageous.

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art will be able to variously modify and change the present invention without departing from the spirit and scope of the invention described in the claims below. It will be appreciated.

1 is an exploded cross-sectional view of a 40 mm practice grenade according to a preferred embodiment of the present invention.

FIG. 2 is a cross-sectional view of the bullet body of the 40 mm practice grenade shown in FIG. 1. FIG.

3 is a cross-sectional view of the casing of the 40 mm practice grenade shown in FIG. 1.

4 is a cross-sectional view showing a state in which the 40 mm practice grenade shown in FIG. 1 is coupled.

5 is a view showing the body portion of the 40mm practice grenade of the present invention when colliding with the object.

<Explanation of symbols for the main parts of the drawings>

1: casing 2: propellant cup

3: propellant 4: base plug

5: first primer 6: skirt

7: warhead body 8: cushioning material

9: Igniter 10: Stand Washer

11: ball 12: ball house

13: feed insertion pipe 14: first spring

15: ignition cup 16: the second primer

17: heavy drink 18: stopper

19: second spring 20: fire extinguishing smoke

21: warhead 22: adhesive

30: hole 34: coupling groove

36: protrusion 50: bullet body

60: shell 100: 40mm practice grenade

102: object

Claims (14)

A casing including a cup-shaped casing having a protrusion formed along an inner circumferential surface of an upper end thereof, a propellant positioned at an inner lower portion of the casing, and a first primer connected to the propellant and positioned below the casing; And A cup-shaped skirt formed along the outer circumferential surface of the casing, the engaging groove into which the protrusion is inserted, the warhead coupled to the top of the skirt, the warhead body inserted into the skirt and coupled to the warhead, and the warhead A fire extinguishing agent and a squeezing agent sequentially provided from the inner front of the stool, a second primer connected to the squeezing agent and positioned inside the skirt, and a ball located in the skirt and striking the second primer when an object collides. 40mm practice grenade containing the bullet body made. The grenade of claim 1, wherein the drunk agent is provided in the warhead body, and the extinguishing smoke agent and the drunk agent are partitioned by a stopper.        40. The practice grenade of claim 1, wherein the fire extinguishing agent comprises a mixture of extinguishing agent and pigment. The grenade of claim 1, wherein at least one compressed second spring is embedded in the fire extinguishing agent to prevent hardening. The method of claim 1, 40 mm practice grenade, characterized in that the drinking agent is selected from the group consisting of nitrocellulose (Nitrocellulose), nitroglycerine (Nitroglycerine) and diphenylamine alone or an optional mixture thereof. The method of claim 1, At least four protrusions are formed along one circumference of the inside of the casing, 40 mm practice grenade, characterized in that the coupling groove is formed on the outer periphery of the skirt as many as the number of the projection in a position corresponding to the projection. The method of claim 6, 40 mm practice grenade, characterized in that the protrusion and the coupling groove is formed or coupled by staking. The method of claim 6, The side surface of the protrusion and the inner surface of the casing form a right angle, 40 mm practice grenade, characterized in that the inner surface and the bottom surface of the coupling groove forms a right angle. The method of claim 1, 40 mm practice grenade further comprises an adhesive applied along one circumference adjacent to the engaging groove of the skirt. The method of claim 9, 40mm practice grenade, characterized in that the adhesive is Thiokol LP2. The method of claim 1, The body portion, A warhead body inserted into the skirt and coupled to the warhead; An ignition cup into which the second primer is inserted in an upper portion of the warhead body; A ball insertion tube positioned in a lower portion of the ignition cup in the lower part of the warhead body and having an opening through which the ball is inserted and a sink of the ball can be passed through an upper end thereof; And 40 mm practice grenade further comprises an elastic means inserted between the firing cup and the ball insertion tube in the warhead body. The method of claim 11, The bullet body portion 40mm practice grenade further comprises a cushioning material interposed between the skirt and the warhead body at the bottom bottom of the skirt. The method of claim 12, 40 mm practice grenade, characterized in that the buffer material is paper. 40. The practice grenade of claim 1, wherein the warhead and the warhead body are formed from a biodegradable plastic material.

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