DE2554049A1 - Rifle projectile with hollow shaft - has through bore for passage of bullet and closure valve for gases - Google Patents

Abstract

A rifle projectile comprises a hollow charge at the forward end and a rear shaft for fitting onto the barrel of the rifle. A coaxial duct leads from the hollow shaft forwards coaxially through the charge to the front end of the projectile and comprises a shut-off device which automatically closes its corss-section when a bullet has passed through it. Pref. the forward end comprises a continuation of the hollow duct. The duct may be open at both ends for a bullet to pass right through, or alternatively the extension portion may have a bullet-retarding and retaining device. The shell can be mounted on the rifle barrel and used in conjunction with live amunition without any risk of explosion. With the automatic closure device, the duct is immediately closed after a bullet has passed through so that the full force of the expansion gases acts upon the projectile. Where the duct is open right through, firing can take place through it.

Description

Rifle grenade

The invention relates to a gun grenade with a particular designed as an axially forward-acting shaped charge and one of these downstream shaft to attach to the barrel of a corrugated barrel.

A Cewehr grenade is known (DT-PS 975 806), whose as axial forward-acting hollow charge formed explosive charge in the area of the rear Charge end has a central recess. This recess is filled with a transfer charge. The latter possesses on the side of the sting-forming Shaped charge lining a recess concentric to the longitudinal axis of the explosive charge for holding a primer. An axial charge passage leads from the primer to the apex of the spiked shaped charge lining.

It is used to hold a guide tube, a slotted one Clamping tube and a lialtering for guiding an ignition needle, which with her the Ziiiidkapsel remote end on a head part designed as a spacer for the llohlladen the grenade is attached. The previously described grenade design is fired by means of a special propellant charge that is shaped like the case of a normal cartridge matches, but, unlike the latter, does not have its own storey.

In another known rifle grenade (DT-OS 1 578 149), whose On the side of the explosive charge, the shaft attachable to the barrel of a rifle into a blind hole a pressure-resistant garnet base is screwed in, precautions are taken for shooting the same was hit with a live cartridge. These precautions include one from the impacting projectile of a live cartridge in the direction of the projectile acceleration retractable catch piece and a braking device for this.

Catching piece and braking device are arranged inside the shaft. With this arrangement, it is considered disadvantageous that in the event of failure of the catch and braking device, the sharp projectile poses an acute danger to the Explosive charge of the rifle grenade and its ignition elements, for the barrel of the used one Represents the rifle and the shooter who uses it.

The object of the present invention is to provide whirling grenades at the outset of the genus mentioned in such a way that it can be completely can be fired safely with sharp cartridges.

This object is achieved according to the invention in that the shaft a coaxial projectile channel open on the shaft side through the explosive charge led to the front end of the grenade and the projectile channel a shut-off device for automatic Sealing of a local canal cross-section after the projectile has passed through is assigned by this.

The projectile channel ensures that the projectile is a live cartridge after emerging from the rifle barrel while maintaining its original trajectory to the front end of the shell without the explosive charge endanger the grenade and its ignition elements in any way. Simultaneously is a simple guarantee for the acceleration of the entire rifle grenade commanded by the propellant gases of the projectile. The during the Movement of the bullet through the bullet channel on the shaft side occuring closure of the latter.

According to one embodiment of the invention, the projectile channel is Open on both sides. Will be a rifle grenade exhibiting this characteristic Put on the barrel of a rifle is still a targeted one with the latter Fire possible.

In a modified grenade design according to the invention takes place = ater waives the last-mentioned possibility of a bullet and bullet catching device Use. However, the latter is not - as in the known case - on a gun barrel attachable crana shaft housed. Rather, it is in an over the section of the projectile channel extending beyond the front face of the explosive charge and thus at a point that is completely unproblematic in the event of failure.

For the sake of simplicity, it is recommended to use the projectile channel as Shut-off one by means of a spring or the like from the open to the closed position to assign movable slide and in the projectile channel at the level of this slide or to arrange several shear pins running transversely to the longitudinal axis of the duct, in such a way that that the latter keeps the slide in its open position until it is sheared off by a projectile lock.

In many cases, it is common to use a transfer charge on the shaft side of the explosive charge and the t; transfer charge on your turned away from the explosive charge Page to assign a securable detonator slide, the concrete slide in assurance lies outside the range of the transfer charge and after Unlocking by means of a spring or the like can be moved into the armed position is where the detonator comes to rest over the transfer charge. All over where this is the case, it is not just for reasons of space saving, but also proved to be useful from a security point of view, the projectile channel between the explosive charge and the shaft through a pressure-resistant housing, inside the housing by means of appropriate duct expansions not only for the detonator slide but also for installation space for the duct slide mentioned above and the duct slide with one in the closed position to the projectile channel coaxial bore for receiving the transfer charge to provide.

In the case of grenade versions of the last-described construction, it has an effect structurally simplifying to the if according to further design features of the invention Sewer valve and detonator valve in the flameproof housing on opposite sides Sides of the projectile channel are arranged axially offset from one another and the detonator slide at the level of a shear pin support surface of the sewer slide an abutment surface for has one and the same shear pin.

If the detonator slide is one with a provided on its side facing away from the explosive charge into which recess to ensure a transverse to the direction of displacement extending and remote from the slide An acceleration pin loaded by a compression spring for additional locking engages with its end facing away from the compression spring, a For increased safety, it is recommended to use a such spring-loaded acceleration pin in the open position in addition to lock.

Embodiments of the invention are described below with reference to the drawings explained in more detail. They show: FIG. 1 a rifle grenade with an explosive charge between it and a two-part stock that can be slipped onto the barrel of a rifle Housing in pressure-resistant design, Fig. 2a the lower part of the aforementioned pressure-resistant Housing with the upper part of the housing lifted off, Fig. 2b shows the upper part of the aforementioned flameproof housing with the lower part of the housing lifted off and Fi. 3 the front part a grenade design modified from FIG. 1.

Fi. 1 shows a rifle grenade 1. The rifle grenade 1 has a Shank 2, which after removing a plug 3 on the barrel of a rifle can be pushed. To stabilize it in flight, there is a at the rear end of the shaft Equal calibrated ring 4 is provided, the position of which is provided by, for example, four webs 5 and a snap ring 6 is fixed.

At the front edge, the shaft 2 goes into a conical attachment piece 7 with external thread 8 over. A sleeve 9 is screwed onto this thread 8. Sic serves the inclusion of an explosive charge 10 and one on the rear face of the explosive charge adjacent flameproof housing 11.

The explosive charge 10 is, for example, acting axially forward rotationally symmetrical hollow charge formed. Your spine-forming excretion 12 engages on the base side in an annular groove 13 of the casing 9. Said annular groove 13 is located near the front hull section. The latter shows an education as an anvil 14. Between this anvil 14 and one another anvil 15 piezo elements 16 are arranged, of which lead wires 17 to a - like can be seen from Fig. 2a - in the flameproof housing 11 housed ignition electronics to lead.

The designated 15 Anlboß is part of a hollow cone 18, which a spacer 19 for the shaped charge in the form of an open on both sides Wears tubular extension and with the shell 9 through a recesses 20 having Steel segment 21 is connected.

The shaped charge 10 irt on the side of the pressure-resistant housing 11 an inert body 22 is embedded for the purpose of concreting wave steering, has a continuous central longitudinal bore 23. This longitudinal bore 23 brings - as tests confirmed - contrary to the generally prevailing opinion at all no or no significant performance losses, even with im Compared to flame guide tubes and ignition needle guide tubes of large diameters.

It is supported by a piece of pipe that is open on both sides 24. This is - just like the tubular extension acting as a spacer for the shaped charge 19 - Part of a projectile channel 25, the pressure-resistant housing 11 section leading through bears the reference numeral 26.

As can be seen from FIGS. 2a and 2b, the housing 11 consists from a lower part 11a and an upper part 11b. The lower housing part 11a has an installation space 27 for a slide 28 for closing the projectile channel. Channel slide 28 is locked twice in the open position shown, namely on the one hand by two in the projectile channel section 26 running transversely to the channel longitudinal axis Shear pins 29 for the support surfaces on an axial channel slide projection 30 31 are provided, and on the other hand by a spring-loaded accelerator pin 32, which is predetermined with its free end 32a until an acceleration occurs Height and duration protrudes into a slide recess 33 provided for this purpose. To the recording a transfer charge @ 4 it is in the closed position with one the projectile channel 25 coaxial bore 35 provided, the diameter of which of the pipe section 24 exceeds. The closed position is reached on the way of a Pivoting movement about a pin 36, for which a torsion spring 37 is responsible.

At the level of the channel slide projection 30 is located on the opposite Projectile channel side a second shutter 38 with a primer 39 and one in focus to the projectile channel coaxial flame detonator 40. The detonator slide 18 is also locked twice in the drawn security, namely on the one hand by the shear pins 29 already mentioned elsewhere, which the with 41 designated slide surface serves as an abutment, and on the other hand by one spring-loaded acceleration pin 42, which with its free end 42a up to Occurrence of an acceleration of a given amount and duration in a designated time Slide recess 43 in the @@ gt. He also arrives on the way of a pivoting movement on the one hand pin 44 from the safe to the armed position. The this pivoting movement The torsion spring effecting is denoted by 45 in the present case.

In addition to the components described above, the lower housing part 11a nor the already mentioned ignition electronics and a micro-switch 16 place. The ignition electronics are housed in a plastic block 47. With her and the Piezo elements 16 are connected to the micro-switch 46 by lead wires 48.

The upper part 11b of the hanger contains the two acceleration pins 32 and 42 as well as the compression springs designated by 49 and 30, against which they in the case of acceleration work. It also has a recess 51 for the wiring of the piezo elements 16 coming lines 17 with the ignition electronics, which after wiring with a hardening Plastic can be filled. His Connection to the lower part 11a takes place in such a way that the free ends of the Trunnions 36 and 44 provided with a thread 52 and 53, respectively, through holes in the upper part of the housing lib outwards and screwed there with slotted nuts 54.

If a grenade of the type described above with its shaft 2 on Pushed the barrel of a rifle, the latter can still be fired in a targeted manner will. The projectile of a live cartridge takes its way from the gun barrel via the shaft 2 and the projectile channel 25 into the open. In this way it smashes with his shoulders the shear pins 29 in the projectile channel section 26. In addition, - due to the acceleration forces and the effects of gas pressure on the free ends 32a and 42a of the acceleration pins 32 and 42 - the latter opposite the forces of DruckSedfr: 49 resp.

50 moved out of the slide recesses 33 and 43, respectively. Is this happen, the torsion spring 37 pivots the Kanaischieber 28 about the pin 36 of the reproduced open u o-e closed position in which the transfer charge 34 den Projectile channel 23 at the transition point between pipe section 24 and section 26 closes and due to their radial dimensions extending beyond the pipe section 24 is in operative connection with the explosive charge 10. The described closing of the Projectile channel 25 has the consequence that the propellant gases accelerating the projectile subsequently Push the entire rifle grenade 1 away from the rifle barrel.

Once the shear pins 29 are broken and the accelerator pin 42 has emerged from the slide recess 43, also becomes the detonator slide 3 swiveled from the reproduced safety into the focus position in which the detonator 40 comes to rest over the transfer charge 34 coaxial with the projectile channel 25. The above-described pivoting movement of the detonator slide 38 can be adjusted if necessary to achieve apron security without further delay, namely by an escapement, not shown for the sake of clarity, for which the lower housing part 11a still offers space.

In Fig. 3 a rifle grenade 61 is shown in sections, <could essentially be changed from the above by arranging a bullet brake and bullet catching device in the section of the Gesclioßkanals formed by the spacer 19 25 differs. The projectile braking device consists of several, left undone of intermediate spaces 62 arranged axially one behind the other baffle plates G3. The bullet trap has the shape of a bolt 64 on its face facing away from the baffle plates 63 rests against a damping layer 65. Between the damping layer 65 and a the front opening of the spacer 19 closing the threaded plug 66 is located - Embedded in insulation material 67 - a piezo generator 63. The piezo generator 68 is designed in such a way that it can act both on impact on hard material as well as in the event of an impact on soft material via lead wires 69 Amount of charge and voltage emits to a correspondingly high-resistance, highly sensitive to be able to respond to an electric detonator.

- patent claims - L e r s e i t e

Claims (8)

P a t e n t a n 5 p r ii c h e rifle grenade with a particular designed as an axially forward-acting shaped charge and one of these downstream shaft for attaching to the barrel of a rifle1 thereby g e k It is noted that the shaft (2) has a coaxial shaft that is open on the shaft side Projectile channel (25) passed through the explosive charge (io) to the front end of the grenade and the projectile channel (25) a shut-off device (28) for the automatic closing of a assigned to the local channel cross-section after the floor has passed through it is. 2. Rifle grenade according to claim 1, characterized in that g e k e n n -z e i c h n e t that the projectile channel (25) one over the front explosive charge face has extending portion (19). 3. Rifle grenade according to claim 1 or 2, characterized in that g e -k e n nz e i c h n e t that the projectile channel (25) is designed to be open on both sides. 4. Rifle grenade according to claims 1 and 2, thereby g e -k e n It is not noted that the projectile channel (25) is over the front face of the explosive charge In sufficient section (19) a bullet braking and bullet catching device (63, 64). 5. Rifle grenade according to one or more of claims 1 to 4, characterized it is not noted that the projectile channel (25) has a slide as a shut-off device (28), which by means of a spring (37) or the like from the open to the Can be moved in the closed position, and in the projectile channel (25) at the height of the slide (28) one or more shear pins (29) running transversely to the longitudinal axis of the channel are arranged are in such a way that they slide the slide (28) in its until it is sheared by a projectile Lock the open position. 6. Rifle grenade according to claim 5, with one of the explosive charge on the shaft side assigned transfer charge and one of the transfer charge on their of the explosive charge facing away from the associated securable detonator slide, which is in safekeeping is outside the range of the transfer charge and after unlocking can be moved into the focus position by means of a spring or the like, in which the detonator comes to rest over the transfer charge, thereby g e k e n n z e i c h e t that the eschon canal (25) between the explosive charge (10) and the shaft (2) through a pressure-resistant housing (11) with installation spaces (27) for the duct valve (28) and the detonator slide (38) is guided and the channel slide (28) is in the closed position to the projectile channel (25) coaxial bore (35) for receiving the transfer charge (34). 7. Rifle grenade according to claims 5 and 6, thereby g e -k e n n z e i c h n e t s that the channel slide (28) and detonator slide (38) in the pressure-resistant Housing (11) on opposite sides of the projectile channel section extending therein (26) are arranged axially offset from one another and the detonator slide (38) in Height of a shear pin support surface (31) of the channel slide (28) an abutment surface (41) for one and the same shear pin (29). 8. Rifle grenade according to claim 6 or 7, wherein the detonator slide has a recess on its side facing away from the explosive charge, into which to ensure a transverse to the direction of displacement extending and remote from the slide The end of the accelerator pin loaded by a compression spring with its compression spring remote end engages, thereby g e k e n n z e i c h n e t that the channel slide (28) in the same way such a spring-loaded acceleration pin (32) as second locking device is assigned.