JP2707504B2 - Anti-tank recoilless gun propellant detonator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a detonator according to the preamble of claim 1.

This type of detonator is used to explode a propellant enclosed in a cartridge, particularly a subcalibre (inner cannon) exercise bullet of an anti-tank recoilless cannon. This exerciseless recoil gun has a launcher into which a dummy rocket containing cartridge ammunition is inserted, and from this launcher, a rocket for exercise is fired without recoil by propellant. ing. The propellant for this exercise cartridge is contained in a container made of, for example, aluminum and exploded by a detonator. Inside the housing of the squib is contained a firing cap, a squib and an insertion element. When the detonator ignites, the insertion element is pushed out of the detonator and inserted into the propellant container, and then the hot gas of the detonator enters the propellant container and the propellant explodes.

The primer must be changed from launch to launch and must be securely and airtightly held in the containment means by the projectile during the detonation process. In addition, in order to ensure that the explosive detonates even after long-term storage, the explosive must be sealed from the outside so that air or moisture does not enter.

In order to solve the above problems, there is known a detonator in which the outer surface of a casing is threaded and a detonator is screwed into its accommodating means. The casing of this detonator consists of two parts, the inner casing being screwed into the interior of the threaded outer casing. The firing cap is housed in an inner casing, the insert element being a cylinder, the ring-shaped flange of the lower part of which is arranged on the priming. A predetermined breaking point is provided between the ring-shaped flange and the cylinder. A ring seal is provided at a portion of the ring-shaped flange beyond the initiator. The ring seal is pressed against the ring flange by the edge of the inner casing, thereby sealing the priming.

When the firing cap is activated and the explosive detonates, the cylinder portion of the insertion element breaks off and separates from the ring flange and is pushed into the propellant container through a hole formed in the outer casing. When the insertion element is inserted into the propellant container, the hot gas of the priming agent enters the propellant and the propellant explodes.

This detonator is complicated because it must be made with a large number of parts that are precisely engaged with each other. The outer casing and the inner casing of the initiator must be manufactured separately and combined with each other. In particular, the production of threaded outer casings and inner casings with hermetic sealing means for insertion elements requires precise production machines and a number of different production steps. Therefore, from the viewpoint of use as a disposable product, this structure cannot be expected to reduce the cost.

In addition, the replacement of the detonator is troublesome in the known device. That is, in the known practice anti-tank gun, when the detonator is to be removed from its storage means, first, the two rotating rings are rotated to unscrew the detonator from the storage means, and then a new detonation is performed. A vessel must be inserted.
The lower edge of the initiator casing is provided with a retainer for facilitating the screwing and removal of the components, but the diameter of this edge is only about 1 cm. For this reason, it takes a long time to remove a used initiator and screw a new one, and also requires skill and skill.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the design problem of the above-mentioned type of detonator, to mass-produce it economically, and to simplify the operation at the time of mounting and replacing the detonator.

The above object is achieved by the features described in claim 1.

The detonator according to the invention is constituted by a single, easily manufactured rotary machined part for the casing of the detonator having a conical outer surface and a central hole, and also by conical receiving means. Thus, the detonator does not need to be screwed.
That is, since the outer wall of the initiator and the inner wall of the receiving means are conical, airtightness can be ensured only by press-fitting the inside of the receiving means. It is only necessary to provide a bore, preferably a stepped bore, inside the casing of the squib to accommodate the firing cap, the priming and the insertion element.
The insertion element is preferably a ball, which is pressed into the narrowest part of the stepped bore at the top of the casing of the detonator to seal the detonator against the outside. To improve this sealing, the space between the ball and the bore is filled with a sealant, for example a sealing wax.

The casing of the initiator can be manufactured by a machine tool from a single material by automatic processing. The firing cap, priming and ball can be later introduced into the final priming casing.

In addition, the receiving means is closed by a rotary lid such that the inner surface of the rotary lid is in contact with the lower side of the casing of the initiator in the closed state. Which can be greatly simplified. The lid preferably has a compartment below the inner surface. The compartment contains a striking pin for a firing cap supported by a spring and a locking component for the striking pin. The striking pin extends through the inner surface. This lid is preferably kept closed by a ball hatch. If the new initiator is to be mounted on the receiving means, it is sufficient to simply open the lid, remove the used initiator, place the new initiator in the receiving means, and then close the lid. These operations can be performed very quickly in a bad environment without any problems.

Other embodiments of the invention are set out in the following claims.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings. You.

FIG. 1 is a longitudinal sectional view of a part of an anti-tank rocket launching device provided with a detonating device according to the present invention, FIG. 2 is a longitudinal sectional view of the detonating device according to the present invention, and FIG. 1 is a longitudinal sectional view of a detonator of a detonator according to the present invention.

FIG. 1 shows an exercise anti-tank gun in the form of an anti-tank rocket launcher with a launcher 2 and a dummy projectile inserted into the launcher 2. Ignition means 4 for launcher
And the aiming telescope 5 are connected. The exercise bullet 6 is inserted into the inner tube of the dummy projectile 3. This exercise bullet has not only a sub-calibre exercise projectile, but also a propellant for firing the exercise projectile and a counterweight. The propellant 7 is exploded by a detonator 8 shown in detail in FIG.

The propellant 7 is contained in a cylindrical aluminum container 9, which has a predetermined breaking point 10 in the area of the detonator 8.

The detonator of the present invention comprises a receiving means 21 inserted through the wall of the projectile 2 and a detonator inserted into the receiving means.
22 and a lid 23 that covers the receiving means 21.

The detonator 22 has a frusto-conical casing 31 having a conical side wall 32, a retaining ring 33 formed on the wide side of the frusto-cone, and a narrow side of the frusto-cone. And a cylindrical extension 34 provided.

The receiving means 21 comprises a conical inner wall 35 corresponding to the conical side wall 32 of the detonator and the projectile 2 at the area of the explosion point 10 of the propellant 7.
And has a cylindrical inner hole 36 opened inside. An O-ring 38 is fitted in a groove 37 formed on the outer peripheral edge of the cylindrical extension 34 of the initiator 22, and the initiator 22 is sealed with respect to the cylindrical hole 36 of the receiving means 21. I have. When the detonator 22 is depressed with the receiving means 21, the conical side walls of both the detonator and the receiving means are in contact with each other and the two parts are sealed from each other and furthermore sealed against the projectile. .

A stepped bore 41 is formed in the center of the casing 31 of the initiator. A first portion 42 having the largest diameter of the stepped bore 41 is formed on the wide side of the frustoconical casing, into which the firing cap 43 is inserted. The diameter of the part 44 following the first part 42 is smaller than that of the first part 42, and the inside of the part
Is housed. This portion 44 of the stepped bore 41 extends substantially axially to the area where the conical outer wall 32 of the initiator is a cylindrical extension 34. Following this section 44 is a section 46 of smaller diameter, into which a bow 47 has been pressed. This ball 47 seals the propellant from the outside. The space between the ball 47 and the bore portion 46 is filled with a sealing varnish 48.

When the firing cap 48 is driven by, for example, a striking pin, the priming agent 45 explodes and pushes the ball 47 out of the bore portion 46, thereby causing the ball 47 to move out of the propellant 7 at the area of the break 10. The inside of the container 9 is entered. Subsequently, the hot gas of the burning initiator 45 flows into the interior of the container 9 through the rupture hole and explodes the propellant. In a known manner,
Exercise stage 6 because the counterweight is fired by propellant
Are fired without recoil from the projectile 2, and the dummy projectile 3 remains on the projectile 2.

To further improve the tightness between the interior of the projectile 2 and the detonator, the cross section of the conical outer wall 32 of the detonator 22 is shown in the left half of FIG. Stepwise. These sealing ribs on the outer peripheral edge serve as labyrinth seals for mounting the squib 22 in the receiving means 21 in a completely airtight state.

In addition, the initiator 22 inserted into the receiving means 21 is
Held in place by 23. That is, as shown in FIG. 2, the lid 23 is rotatable in the direction of arrow P about a shaft 61 connected to the projectile 2, and is locked by the ball type hatch 62 in the closed state. ing. In this position, the inner surface 63 of the lid 23 contacts the lower side of the initiator 22. A center hole 64 into which the striking pin 65 is inserted is formed in the inner side surface 63. The striking pin 65 is supported by a spring 66. The striking pin 65 and the spring 66 are arranged together with the lock pin 67 inside a compartment 68 of the lid 23 extending downward with respect to the inner side surface 63.
When the lock pin 67 supported by the spring 69 moves by a certain distance, the striking pin 67 supported by the spring is opened, and strikes the firing cap 43 of the initiator 22.

 The detonator described above can also be used with actual weapons.

Claims (10)

(57) [Claims] 1. A detonator having a firing cap, a detonator and an insertion element in a casing, and receiving means for removably receiving and holding said detonator provided in the area of a propellant container. The explosive encapsulated in a container, in particular of a propellant for an anti-tank artillery ammunition, wherein the casing (31) of the initiator (22) is frusto-conical and has a central bore ( 41). Inside the casing (31), in order from the wide side of the frustoconical shape, the firing cap (43) and the priming (44)
And the insertion element (47) are accommodated, and the insertion element (47) is sealed with respect to the bore (41),
An explosive device, wherein the receiving means (21) has a shape suitable for a casing (31) of the explosive device (22). 2. The device as claimed in claim 1, wherein the outer wall (32) of the frustoconical casing (31) of the detonator is provided with an outer peripheral sealing rib (32). 3. A cylindrical extension (34) is provided at the tapered end of the initiator casing (31), the extension being in the vicinity of a conical portion of the receiving means (21). Device according to claim 1 or 2, characterized in that it is engaged with (36). 4. The device according to claim 3, wherein an outer peripheral sealing ring (28) is attached to the cylindrical extension (34) of the initiator casing (31). 5. The detonator casing (31) according to claim 1, further comprising a retaining edge (33) on the wide side of the frustoconical shape. The described device. 6. A central bore (4) in the casing (31) of the detonator.
1) is a stepped hole, in which the firing cap (43) is housed in the widest hole (42) on the wide side of the frustoconical shape, followed by a narrower hole (42). 44) contains the priming agent and the priming casing (31)
6. The device according to claim 1, wherein the insertion element is accommodated in the narrowest hole in the frusto-conical apex area of the truncated cone. 7. The insertion element is a ball (47), which is pressed into a bore (41, 46) in the area of the top of the casing (31) of the initiator. The apparatus according to any one of claims 1 to 6, wherein 8. Device according to claim 7, wherein the ball (47) is sealed against the bore (46) by a sealant (48), in particular a sealing wax. 9. The receiving means (21) is closed by a pivotable lid (23), and in the closed state, the inner surface (63) of the lid (23) is closed.
Abuts on the casing (31) of the detonator, and this inner surface (6
Below the 3), the striking pin (65) of the firing cap (43) of the squib (22) penetrating the inner surface (63) of the lid (23),
9. Apparatus according to claim 1, characterized in that a compartment (68) is provided in which a locking means (67) for the striking pin (65) is accommodated. 10. Device according to claim 9, wherein the lid (23) is kept closed by a ball hatch (62).