EP0872702A2 - Pyrotechnic charge located within a tube - Google Patents

Pyrotechnic charge located within a tube Download PDF

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Publication number
EP0872702A2
EP0872702A2 EP98106895A EP98106895A EP0872702A2 EP 0872702 A2 EP0872702 A2 EP 0872702A2 EP 98106895 A EP98106895 A EP 98106895A EP 98106895 A EP98106895 A EP 98106895A EP 0872702 A2 EP0872702 A2 EP 0872702A2
Authority
EP
European Patent Office
Prior art keywords
tube
pyrotechnic charge
ball
closure
silicone layer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP98106895A
Other languages
German (de)
French (fr)
Other versions
EP0872702A3 (en
EP0872702B1 (en
Inventor
Günter Berg
Dieter Faust
Erwin Wrobel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Diehl Stiftung and Co KG
Original Assignee
Diehl Stiftung and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Diehl Stiftung and Co KG filed Critical Diehl Stiftung and Co KG
Publication of EP0872702A2 publication Critical patent/EP0872702A2/en
Publication of EP0872702A3 publication Critical patent/EP0872702A3/en
Application granted granted Critical
Publication of EP0872702B1 publication Critical patent/EP0872702B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B8/00—Practice or training ammunition
    • F42B8/12—Projectiles or missiles
    • F42B8/26—Hand grenades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B4/00—Fireworks, i.e. pyrotechnic devices for amusement, display, illumination or signal purposes

Definitions

  • the invention relates to a pyrotechnic charge in a pipe the preamble of claim 1.
  • DE 26 44 230 A1 discloses a practice hand grenade with an ignition delay, in which a pyrotechnic charge u. a. generated a bang. This is this charge is placed in a tube inside the grenade. The pipe closes with one, when the pyrotechnic charge is ignited by the building gas pressure tearing ground. It cannot be ruled out that large parts of the ground fly away with high kinetic energy, which according to the applicable regulations is not permitted.
  • the object of the invention is therefore a closure for a pyrotechnic charge to create, in which parts fly away but these have a very low mass have, so that the energy transmitted through these parts far below a permissible value remain.
  • FIG. 1 shows a hand grenade in longitudinal section and FIG. 2 shows an enlarged one drawn section of a charge tube according to FIG. 1.
  • a practice hand grenade 1 shown in dash-dot lines has a central charge tube 3 with primer 5, a time-delayed set 7 and a bang charge 9 on.
  • the charge tube 3 closes with its free end face 11 approximately with the lower one Face 13 of the practice grenade 1.
  • a bore 15 takes the bang charge 9 on.
  • the charge tube 3 has a conical seat 17 for a ball 18 from a light, foamed styrene and a recess 19 for one disk-shaped or lid-shaped silicone layer 21 consisting of a vulcanizable Silicone rubber.
  • This is crater-shaped 27 and in relation to the ball 18 with respect to the conical seat 17 conical 28.
  • the ball 18 is seated in the conical seat 17 with a slight preload, with about 50% of the Ball surface is glued to the silicone layer 21.
  • the silicone layer 21 is in turn over the surface of the recess 19 and part of the conical seat 17 glued to the charge tube 3.
  • a very thin, membrane-shaped layer 31 of the silicone layer 21 enables the Ball 18 exits charge tube 3.
  • the diameter 23 of the recess 19 is larger than the diameter 25 of the Ball 18. Because of this and through the conical seat 17, 28 or the edge 29 there is a Large adhesive surface of the silicone layer 21 on the charge tube 3 and on the ball 18 before. In the event of hard impacts in the axial direction of the charge tube 3, this ensures that the bang charge 9 applied to the ball 18 by the ball 18 and the silicone layer 21 existing closure 30 an opening 33 of the charge tube 3 closes securely.
  • the time-delayed set 7 burns and ignites the bang charge 9.
  • the gas pressure of the bang charge 9 drives the ball 18 out of it Tapered seat 17.
  • the silicon layer 21 increases in the area of the layer 31 deformed until the ball 18, the increasingly thin silicon layer 21, 31st pierces.
  • the silicone layer 21, 31 therefore remains on the charge tube 3 while the ball 18 due to its very low mass and due to the large air resistance quickly falls to the ground. The given conditions for the kinetic Energy and flying distance of flying parts are not reached, so that the safety conditions are met.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)
  • Toys (AREA)
  • Materials For Medical Uses (AREA)

Abstract

Practice hand grenade or fire brigade device comprises a pyrotechnic charge in a tube. The tube has a closure which opens under gas pressure. The closure (30) has at least two sections, and an outer silicone layer (21) near the tube opening (33), joins a lightweight closure (18) to the tube (3). The closure pref. consists of a foamed material, e.g. styrene.

Description

Die Erfindung bezieht sich auf eine pyrotechnische Ladung in einem Rohr nach dem Oberbegriff des Anspruchs 1.The invention relates to a pyrotechnic charge in a pipe the preamble of claim 1.

Aus der DE 26 44 230 A1 ist eine Übungshandgranate mit Zündverzögerung bekannt, bei der eine pyrotechnische Ladung u. a. einem Knall erzeugt. Hierzu ist diese Ladung in einem Rohr innerhalb der Handgranate angeordnet. Das Rohr schließt mit einem, bei Anzündung der pyrotechnischen Ladung durch den sich aufbauenden Gasdruck zerreißenden Boden ab. Dabei ist nicht auszuschließen, daß große Teile des Bodens mit hoher kinetischer Energie wegfliegen, was nach den geltenden Bestimmungen nicht zulässig ist.DE 26 44 230 A1 discloses a practice hand grenade with an ignition delay, in which a pyrotechnic charge u. a. generated a bang. This is this charge is placed in a tube inside the grenade. The pipe closes with one, when the pyrotechnic charge is ignited by the building gas pressure tearing ground. It cannot be ruled out that large parts of the ground fly away with high kinetic energy, which according to the applicable regulations is not permitted.

Aufgabe der Erfindung ist es daher, einen Verschluß für eine pyrotechnische Ladung zu schaffen, bei dem zwar Teile wegfliegen aber diese eine sehr geringe Masse aufweisen, so daß die durch diese Teile übertragene Energie weit unterhalb eines zulässigen Wertes bleiben.The object of the invention is therefore a closure for a pyrotechnic charge to create, in which parts fly away but these have a very low mass have, so that the energy transmitted through these parts far below a permissible value remain.

Die Erfindung löst diese Aufgabe entsprechend den kennzeichnenden Merkmalen des Anspruches 1. Vorteilhafte Weiterbildungen der Erfindung sind den Unteransprüchen zu entnehmen.The invention solves this problem according to the characterizing features of claim 1. Advantageous further developments of the invention are the dependent claims refer to.

Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt.An embodiment of the invention is shown in the drawing.

Es zeigt Fig. 1 eine Übungshandgranate im Längsschnitt und Fig. 2 einen vergrößert gezeichneten Abschnitt eines Ladungsrohres nach Fig. 1. 1 shows a hand grenade in longitudinal section and FIG. 2 shows an enlarged one drawn section of a charge tube according to FIG. 1.

Eine strichpunktiert gezeichnete Übungshandgranate 1 weist ein zentrales Ladungsrohr 3 mit Zündkapsel 5, einen zeitverzögernden Satz 7 und eine Knalladung 9 auf.A practice hand grenade 1 shown in dash-dot lines has a central charge tube 3 with primer 5, a time-delayed set 7 and a bang charge 9 on.

Das Ladungsrohr 3 schließt mit seiner freien Stirnseite 11 etwa mit der unteren Stirnfläche 13 der Übungshandgranate 1 ab. Eine Bohrung 15 nimmt die Knalladung 9 auf. Endseitig weist das Ladungsrohr 3 einen Kegelsitz 17 für eine Kugel 18 aus einem leichten, geschäumten Styrol und eine Ausnehmung 19 für eine scheiben- oder deckelförmige Silikonschicht 21 bestehend aus einem vulkanisierbaren Silikonkautschuk auf. Diese ist in Bezug auf die Kugel 18 kraterförmig 27 und bezüglich des Kegelsitzes 17 keglig 28 ausgebildet. Dadurch liegt ein spitz zulaufender Rand 29 vor, der die Kugel 18 streifenförmig einhüllt.The charge tube 3 closes with its free end face 11 approximately with the lower one Face 13 of the practice grenade 1. A bore 15 takes the bang charge 9 on. At the end, the charge tube 3 has a conical seat 17 for a ball 18 from a light, foamed styrene and a recess 19 for one disk-shaped or lid-shaped silicone layer 21 consisting of a vulcanizable Silicone rubber. This is crater-shaped 27 and in relation to the ball 18 with respect to the conical seat 17 conical 28. This is a tapered Edge 29, which envelops the ball 18 in strips.

Im Kegelsitz 17 sitzt die Kugel 18 mit leichter Vorspannung, wobei etwa 50 % der Kugeloberfläche mit der Silikonschicht 21 verklebt ist. Die Silikonschicht 21 ist ihrerseits über die Oberfläche der Ausnehmung 19 und eines Teils des Kegelsitzes 17 mit dem Ladungsrohr 3 verklebt.The ball 18 is seated in the conical seat 17 with a slight preload, with about 50% of the Ball surface is glued to the silicone layer 21. The silicone layer 21 is in turn over the surface of the recess 19 and part of the conical seat 17 glued to the charge tube 3.

Eine sehr dünne, membranförmige Schicht 31 der Silikonschicht 21 ermöglicht der Kugel 18 den Austritt aus dem Ladungsrohr 3.A very thin, membrane-shaped layer 31 of the silicone layer 21 enables the Ball 18 exits charge tube 3.

Der Durchmesser 23 der Ausnehmung 19 ist größer als der Durchmesser 25 der Kugel 18. Dadurch und durch den Kegelsitz 17, 28 bzw. den Rand 29 liegt eine große Klebeoberfläche der Silikonschicht 21 am Ladungsrohr 3 und an der Kugel 18 vor. Bei harten Stößen in Achsrichtung des Ladungsrohres 3 ist damit gewährleistet, daß die an der Kugel 18 anliegende Knalladung 9 durch den, aus der Kugel 18 und der Silikonschicht 21 bestehenden Verschluß 30 eine Öffnung 33 des Ladungsrohres 3 sicher verschließt.The diameter 23 of the recess 19 is larger than the diameter 25 of the Ball 18. Because of this and through the conical seat 17, 28 or the edge 29 there is a Large adhesive surface of the silicone layer 21 on the charge tube 3 and on the ball 18 before. In the event of hard impacts in the axial direction of the charge tube 3, this ensures that the bang charge 9 applied to the ball 18 by the ball 18 and the silicone layer 21 existing closure 30 an opening 33 of the charge tube 3 closes securely.

Nach Zündung der Zündkapsel 5 brennt der zeitverzögernde Satz 7 ab und zündet die Knalladung 9. Der Gasdruck der Knalladung 9 treibt die Kugel 18 aus ihrem Kegelsitz 17. Dabei wird die Silikonschicht 21 im Bereich der Schicht 31 zunehmend verformt, bis die Kugel 18 die immer dünner werdende Silikonschicht 21, 31 durchstößt. Die Silikonschicht 21, 31 verbleibt daher am Ladungsrohr 3, während die Kugel 18 aufgrund ihrer sehr geringen Masse und aufgrund des großen Luftwiderstandes rasch zu Boden fällt. Die vorgegebenen Bedingungen für die kinetische Energie und Flugdistanz von wegfliegenden Teilen werden nicht erreicht, so daß die Sicherheitsbedingungen erfüllt sind.After ignition of the primer 5, the time-delayed set 7 burns and ignites the bang charge 9. The gas pressure of the bang charge 9 drives the ball 18 out of it Tapered seat 17. The silicon layer 21 increases in the area of the layer 31 deformed until the ball 18, the increasingly thin silicon layer 21, 31st pierces. The silicone layer 21, 31 therefore remains on the charge tube 3 while the ball 18 due to its very low mass and due to the large air resistance quickly falls to the ground. The given conditions for the kinetic Energy and flying distance of flying parts are not reached, so that the safety conditions are met.

Claims (8)

Pyrotechnische Ladung in einem Rohr für eine Übungsgranate oder Feuerwerksartikel, bei der das Rohr durch einen, durch den Gasdruck zu öffnenden Verschluß geschlossen ist,
dadurch gekennzeichnet,
daß der Verschluß (30) wenigstens zweiteilig ist, indem eine äußere Silikonschicht (21) im Bereich der Öffnung (33) des Rohres (3) einen sehr leichten Verschlußkörper (18) mit dem Rohr (3) verbindet.Pyrotechnic charge in a tube for a practice grenade or fireworks item, in which the tube is closed by a closure that can be opened by the gas pressure,
characterized by
that the closure (30) is at least in two parts by an outer silicone layer (21) in the region of the opening (33) of the tube (3) connecting a very light closure body (18) to the tube (3). Pyrotechnische Ladung nach Anspruch 1,
dadurch gekennzeichnet,
daß der Verschlußkörper (18) aus einem geschäumten Werkstoff wie Styrol besteht.Pyrotechnic charge according to claim 1,
characterized by
that the closure body (18) consists of a foamed material such as styrene. Pyrotechnische Ladung nach Anspruch 1,
dadurch gekennzeichnet,
daß der Verschlußkörper als Kugel (18) ausgebildet ist und das Rohr (3) für die Lagerung der Kugel (18) mit einem Kegelsitz (17) versehen ist.Pyrotechnic charge according to claim 1,
characterized by
that the closure body is designed as a ball (18) and the tube (3) for mounting the ball (18) is provided with a conical seat (17). Pyrotechnische Ladung nach Anspruch 3,
dadurch gekennzeichnet,
daß das Rohr (3) eine Ausnehmung (19) zur Aufnahme der etwa scheibenförmigen Silikonschicht (21) aufweist und der Durchmesser (23) der Ausnehmung (19) größer ist als die Kugel (18).Pyrotechnic charge according to claim 3,
characterized by
that the tube (3) has a recess (19) for receiving the approximately disc-shaped silicone layer (21) and the diameter (23) of the recess (19) is larger than the ball (18). Pyrotechnische Ladung nach Anspruch 1,
dadurch gekennzeichnet,
daß die Silikonschicht (21) aus einem vulkanisierbarem Silikonkautschuk besteht. Pyrotechnic charge according to claim 1,
characterized by
that the silicone layer (21) consists of a vulcanizable silicone rubber. Pyrotechnische Ladung nach Anspruch 1,
dadurch gekennzeichnet,
daß die Silikonschicht (21) in der Hauptachse des Rohres (3) mit einer membranförmigen Schicht (31) an der Kugel (18) anliegt bzw. mit der Kugel (18) verklebt ist.Pyrotechnic charge according to claim 1,
characterized by
that the silicone layer (21) lies in the main axis of the tube (3) with a membrane-shaped layer (31) on the ball (18) or is glued to the ball (18). Pyrotechnische Ladung nach Anspruch 1,
dadurch gekennzeichnet,
daß die pyrotechnische Ladung (9) an dem Verschlußkörper (18) anliegt.Pyrotechnic charge according to claim 1,
characterized by
that the pyrotechnic charge (9) abuts the closure body (18). Pyrotechnische Ladung nach den Ansprüchen 1 und 3,
dadurch gekennzeichnet,
daß der Verschlußkörper (18) etwa zur Hälfte seiner Oberfläche mit der Silikonschicht (21) verklebt ist, wobei die Silikonschicht mit einem spitz zulaufenden Rand (29) den Verschlußkörper (18) zu einem Teil einhüllt.Pyrotechnic charge according to claims 1 and 3,
characterized by
that the closure body (18) is glued to about half of its surface with the silicone layer (21), the silicone layer with a tapered edge (29) enveloping the closure body (18) in part.
EP98106895A 1997-04-19 1998-04-16 Pyrotechnic charge located within a tube Expired - Lifetime EP0872702B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19716511 1997-04-19
DE19716511A DE19716511A1 (en) 1997-04-19 1997-04-19 Pyrotechnic charge in a tube

Publications (3)

Publication Number Publication Date
EP0872702A2 true EP0872702A2 (en) 1998-10-21
EP0872702A3 EP0872702A3 (en) 2000-01-26
EP0872702B1 EP0872702B1 (en) 2003-10-01

Family

ID=7827084

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98106895A Expired - Lifetime EP0872702B1 (en) 1997-04-19 1998-04-16 Pyrotechnic charge located within a tube

Country Status (5)

Country Link
EP (1) EP0872702B1 (en)
AT (1) ATE251301T1 (en)
DE (2) DE19716511A1 (en)
DK (1) DK0872702T3 (en)
NO (1) NO317408B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202004018014U1 (en) * 2004-11-20 2006-04-27 Diehl Bgt Defence Gmbh & Co. Kg Pipe with a pyrotechnic charge comprises a closure layer adhered to a closure member over one end

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2644230A1 (en) 1976-03-15 1977-09-29 Francesco Moneta HAND GRENADE WITH END DELAY

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR844961A (en) * 1937-10-20 1939-08-07 Anciens Ets Skoda Dynamic self-timer projectile and relay
FR1439815A (en) * 1961-03-13 1966-05-27 Zd Y Rijnove Revoluce Narodni Explosion-proof, delayed electric detonator
DE1969984U (en) * 1967-02-28 1967-10-05 Bock Geb BANGERS WITH CANNON STRIKE.
DE7235812U (en) * 1972-09-29 1973-02-08 Diehl Training hand grenade
AT396304B (en) * 1991-03-26 1993-08-25 Oregon Ets Patentverwertung Practice hand grenade detonator (fuze)

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2644230A1 (en) 1976-03-15 1977-09-29 Francesco Moneta HAND GRENADE WITH END DELAY

Also Published As

Publication number Publication date
ATE251301T1 (en) 2003-10-15
DK0872702T3 (en) 2004-02-02
NO981703D0 (en) 1998-04-16
EP0872702A3 (en) 2000-01-26
NO317408B1 (en) 2004-10-25
DE59809762D1 (en) 2003-11-06
DE19716511A1 (en) 1998-10-22
EP0872702B1 (en) 2003-10-01
NO981703L (en) 1998-10-20

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