JPS5947240B2 - Jump type antipersonnel mine fuse - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fuse for a ricochet type anti-personnel landmine in which a transmission train for explosive charges and a transmission train for discharged charges are provided separately.

Generally, as shown in Fig. 1, a vaulting type antipersonnel landmine has a fuse 2 attached to the top of the mine body 1 when buried, and when the fork 3 of the fuse is pulled out, the firing pin 5 is activated by the force of the firing spring 4 and the detonator 6 is activated. This fire ignites the rapid fire line 7 of the landmine body 1, and then the fire spreads from the first delay charge 8 to the first transfer charge 9, second transfer charge 10, and third transfer charge 11 in this order. Release drug 1
2 is ignited, and the embolus 13 is separated from the mine body 1 by the combustion gas pressure of the discharged charge 12, and the mine body is released to the ground;
At the same time, the fire of the ejected charge 12 is arranged to rupture the detonator 15 via the second delay charge 14, thus causing the explosive charge 16 to explode.

However, since this type of landmine has a detonator built into the mine body, there is a risk that the detonator will explode due to shock and static electricity, causing a large amount of explosives to explode.
Therefore, in the past, in order to prevent such risks, filling operations and the like had to be performed with special care, which inevitably resulted in a decrease in work efficiency.

Additionally, because the fire transmission chain from the detonator to the explosive charge was arranged in series, there was a high possibility that one of the gunpowder would fail to ignite, resulting in a landmine failure due to poor flame transmission.

The present invention has been made in view of the above circumstances, and it fundamentally changes the conventional fuse structure by incorporating a detonator into the fuse, and also incorporates a branched transmission line for the ejected charge and the explosive charge. The purpose of this project is to provide a fuse for vaulting anti-personnel mines that eliminates the shortcomings of other products.

The fuse of the present invention adopts a structure in which a transfer tube having a detonator for igniting the explosive charge and a transfer charge for igniting the ejected charge is attached to the fuse body in which the first delay charge is arranged next to the detonator. The first delaying charge in the fuze body is used as an ignition relay source, and the ignition transmission path is branched so that one side ignites the detonator via the second delaying charge, and the other side ignites the transfer charge via the ignition chain path. It is characterized by being provided with

The present invention will be described below based on embodiments with reference to the drawings.

In FIG. 2, A is a fuse body equipped with a firing pin 21, a detonator 22, a first delay charge 23, and a second delay charge 24, and a fuse according to the present invention is mounted together with a transfer tube B screwed onto this body. Configure.

The firing pin 21 is rotatably supported on a shaft 25 and biased counterclockwise in the drawing by a torsion coil spring 26.

Reference numeral 27 denotes a cover that covers the firing pin 21. One end of the cover is rotatably supported on a shaft 28, and normally receives the rotational force of the firing pin, so the rotational force is suppressed by a trap wire pin 29. ing.

A second delay charge 24 is housed in the lower part of the detonator 22, connected to the first delay charge 23, and the second delay charge is further housed in a firing tube across a gap 30 provided in anticipation of the Monroe effect. It faces the detonator 31.

On the other hand, the fire tube B has a double cylindrical shell, that is, an inner shell 32.
and an outer cylinder shell 33.

The inner shell 32 has the fuse body A screwed onto its upper inner edge, and the detonator 3 is located inside the above-mentioned cavity 30.
1 is accommodated.

Further, an ignition chain passage 34 is formed in the outer cylinder shell 33, and the first transfer charge 35 is accommodated in the passage, but most of the passage is in the hollow part 36.
At the end of the space, the released drug (
A second transfer charge 37 facing the reference numeral 42) in FIG. 3 is accommodated.

The first transfer charge 35 faces the first postponement charge 23 housed in the fuze body through a communication hole 38, and the hollow portion 36 is bored along the axial direction of the outer cylinder shell 33.

Further, a spacer 39 having a hollow core 39a is screwed into the bottom of the outer shell 33, and a chamber 40 for accommodating the second transfer powder 37 is provided at the bottom of the inner shell in contact with the spacer. , which communicates with the ignition chain 34.

Further, the second transfer powder 37 faces the discharged charge 42 in the discharge chamber 41 via the hollow core portion 39a.

Next, the operation of the branched fire transmission system, which is an important feature of the present invention, will be explained in detail.

The fire emitted from the detonator 22 by the strike of the firing pin 21 ignites the first delay charge 23 and then releases the landmine in a jumping manner onto the ground, and the fire that causes the explosive charge 43 inside the mine to explode after release. transmitted to the series.

In other words, the fire for releasing the mine is transmitted from the first deferral charge 23 through a communication hole 38 drilled in the fuze body portion on the side of the deferment charge.
The first transfer powder 35, the hollow part 36, and the second transfer powder 37 are transmitted in this order, and the powder 42 is released from the hollow core part 39a of the spacer.
The mine C shown in FIG. 3 is ejected from the ejection tube 44 to the ground due to the pressure of the combustion gas generated at this time.

On the other hand, in the explosion of the explosive charge, the fire of the first delay charge 23 is transmitted to the second delay charge 24, but the mine C adjusts the burning speed so that it is released to the ground while the second delay charge is in progress. Therefore, after release, the detonator 31 is ignited, the explosive charge 43 is detonated, and the mine body 45 is exploded.

That is, in the fuse according to the present invention, the flame transmission sequence to the ejected charge is completed while the flame transmission sequence to the explosive charge is progressing.

FIG. 3 shows an example of a jumping anti-personnel mine equipped with the fuse of the present invention.

A C-shaped retaining ring 47 is fitted into the groove 46 on the upper edge of the cylindrical mine C accommodated in the discharge tube 44, and a lid 50 is attached by inserting a gasket 49 into the stepped portion 48. Ru.

The discharge tube 44 is provided with a discharge chamber 41 for accommodating the discharge medicine 42 and communicates with the spacer 39 through a through hole 51 at the bottom of the mine body.

At the time of burying, as shown in this figure, the fuse is attached to the mine C housed in the discharge tube 44, and the entire mine is buried underground.

Now, when the trap line bottle 29 is pulled out, the cover 27 is pushed up by the firing pin 21 energized by the spring 26 and rotates about the shaft 28, and the firing pin 21 also rotates about the shaft 25. move and strike the detonator 22.

Hereinafter, as already described in detail, the fire from the first delay charge 23 ignited by the fire of the detonator 22 is branched and propagated into two lines, and the explosion of the explosive charge can be caused following the release of the landmine.

Since the present invention is based on the configuration as described above, it can produce the following remarkable effects.

(1) Since the ignition train that ignites the detonator and the ignition train that controls the ignition of the ejected charge are separated, both the ejected charge and the explosive charge are completely ignited.

Note that branching is possible through a communication hole bored in a portion of the fuze body facing the side surface of the first deferral medicine, which is longitudinally arranged in the axial direction.

By the way, in conventional landmines of this kind, the fire from the discharged charge ignites the second delayed charge, so if the embolus is poorly fitted or the installation location is soft soil, the released charge may be completely combusted. The main body of the landmine detaches from the embolus before the embolus reaches the point where the gas pressure does not increase sufficiently, often resulting in the second delay charge not igniting.

(11) Since the detonator is connected to the explosive only at the time of installation, it is possible to prevent unexpected disasters during the charging operation, and to significantly reduce the number of man-hours required for charging, inspection, etc.

(Compared to the conventional type with built-in detonator, there is no need to design a vertical groove to accommodate the detonator on the inner surface of the explosive, and the mold for molding is simplified, so the incidence of defective products is reduced. This also contributes to lower production costs.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a partially cutaway vertical sectional view of a conventional jumping type anti-personnel mine, and Fig. 2 is a vertical sectional view showing an embodiment of the fuse for a jumping type anti-personnel mine according to the present invention. , FIG. 3 is a longitudinal sectional view of an embodiment in which the fuse shown in FIG. 2 is incorporated into the mine body. A... Fuze body, B... Fire tube, C...
...Landmine, 21...Firing pin, 22...
・Detonator, 23... First postponed drug, 24...
・Second postponement drug, 31...detonator, 34...
...Ignition chain, 35...First transfer powder, 36
...Hollow part, 37...Second transfer powder, 4
2...Release drug, 43...Explosive powder, 44.
...Ejection tube, 45...Landmine body. 4)

Claims (1)

[Claims] 1. A fuse body that houses a detonator that is ignited by the strike of the firing pin and a deferral charge that is ignited by the fire of the detonator, and a fire chain that leads through the deferral charge to the detonator that controls the ignition of the explosive charge and the combustion of the deferral charge. During the movement, the transmission leads to the transfer charge, which controls the ignition of the ejected charge, through the communication hole bored in the part of the fuze body facing the side surface of the deferred charge, which is arranged vertically in the axial direction, and through the ignition chain. A jumping type which is constructed by attaching a built-in flame transfer cylinder that branches off from the fire line, and is characterized in that the flame transfer line to the discharged charge is completed while the flame line to the explosive charge is in progress. %formula%