EP2088394A2 - Détonateur miniature - Google Patents

Détonateur miniature Download PDF

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Publication number
EP2088394A2
EP2088394A2 EP09001482A EP09001482A EP2088394A2 EP 2088394 A2 EP2088394 A2 EP 2088394A2 EP 09001482 A EP09001482 A EP 09001482A EP 09001482 A EP09001482 A EP 09001482A EP 2088394 A2 EP2088394 A2 EP 2088394A2
Authority
EP
European Patent Office
Prior art keywords
detonator
miniature
charge
booster
miniature detonator
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.)
Withdrawn
Application number
EP09001482A
Other languages
German (de)
English (en)
Other versions
EP2088394A3 (fr
Inventor
Karl Rudolf
Bernd Dr. Eigenmann
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 Defence GmbH and Co KG
Original Assignee
Diehl BGT Defence GmbH 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 BGT Defence GmbH and Co KG filed Critical Diehl BGT Defence GmbH and Co KG
Publication of EP2088394A2 publication Critical patent/EP2088394A2/fr
Publication of EP2088394A3 publication Critical patent/EP2088394A3/fr
Withdrawn legal-status Critical Current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
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/10—Initiators therefor
    • F42B3/12—Bridge initiators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/02—Blasting cartridges, i.e. case and explosive adapted to be united into assemblies
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/10—Initiators therefor
    • F42B3/12—Bridge initiators
    • F42B3/124—Bridge initiators characterised by the configuration or material of the bridge
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/10—Initiators therefor
    • F42B3/12—Bridge initiators
    • F42B3/125—Bridge initiators characterised by the configuration of the bridge initiator case
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/22—Elements for controlling or guiding the detonation wave, e.g. tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00—Details of fuzes
    • F42C19/08—Primers; Detonators
    • F42C19/09—Primers or detonators containing a hollow charge

Definitions

  • the invention relates to a miniature detonator according to the preamble of claim 1.
  • detonators work by initiating a sufficiently friction, impact or temperature sensitive input set.
  • the input sentence in turn initiates one or more subsequent sentences, the last sentence of which has sufficient energy and mass to implement the charge to be initiated by the detonator.
  • the overfire is typically accomplished by a blast of the hot gas and / or by hot, fast moving metal chips from a bottom element of the detonator.
  • the invention has for its object to provide a miniature detonator of the type mentioned small space and low charge with a larger output power for the initiation of insensitive explosives.
  • the miniature detonator according to the invention is based on the principle that it develops its output power directed with a low charge of, for example, 10 to 20 mg and in this way over relatively large distances of z. B. 3 to 5 mm and subsequent insensitive Zündketten components can initiate.
  • the directional power output is accomplished by reshaping the detonator bottom and accelerating it to a high speed by detonating it.
  • the said detonator bottom hits in the form of a sufficiently flat disc (flyer) with a sufficiently high speed on the entrance of a subsequent Zündketten component, d. H. a booster, and there initiates a shock wave of sufficient height and length, so that the said booster is initiated.
  • the primary charge of the miniature detonator can be thermally initiated by means of an electrical bridge element or mechanically by means of a shock or friction sensitive set.
  • the miniature detonator may, for example, have a diameter of 2.5 mm and an axial dimension of 3.5 mm, it being understood that other dimensions are possible. If the initiation of the primary charge of the miniature detonator with the aid of a shock or friction sensitive set, so the miniature detonator z. B. have a diameter of 3.5 mm and an axial dimension of 5.5 mm, and it is understood here that other dimensions are feasible. The dimensions given are only intended to illustrate the size dimensions of the miniature detonator according to the invention.
  • the miniature detonator according to the invention is designed such that the initiation point of the primary charge is provided centrally, so that a detonation front propagates through the charge sufficiently rotationally symmetrical and forms the flyer sufficiently rotationally symmetrical and axially parallel accelerated.
  • miniature detonators according to the invention with the above-mentioned dimensions and explosive charges of, for example, 10 to 20 mg can be realized.
  • Fig. 1 illustrates enlarged an embodiment of the miniature detonator 10, the over-ignition on a firing chain 12 (see the FIGS. 5 and 6 ) is provided.
  • the miniature detonator 10 has a charge 14 small mass of, for example. 10 to 20 mg.
  • the charge 14 is provided for the directed generation of its output from a centric initiation site 16 to a detonator bottom 18.
  • the detonator bottom 18 is high for forming into a flat disc (flyer) 20 Speed formed concave dented.
  • the Flyer 20 is in Fig. 1 from the miniature detonator 10 axially spaced slightly indicated by thin dashed lines.
  • the charge 14 of the miniature detonator 10 has a primary charge 22 and a secondary charge 24 adjacent thereto.
  • the primary charge 22 is provided in a centering element 26.
  • the secondary charge 24 adjoins the concavely dented detonator bottom 18.
  • an electric bridge element 28 is provided to initiate the primary charge 22.
  • the electric bridge element 28 is provided on an electrically insulating bottom termination element 30 of the miniature detonator 10. Extending out of the electrically insulating bottom termination element 30 are connecting elements 32 which are in contact with the electrical bridge element 28 and are spaced apart from one another.
  • the electrically insulating bottom termination element 30 has a peripheral sleeve 34 which encloses the bottom termination element 30.
  • the centering element 26 is attached to an extension sleeve 36. Between the extension sleeve 36 of the centering element 26 and the peripheral sleeve 34 of the electrically insulating bottom termination element 30 is in the in Fig. 1 drawn embodiment of the miniature detonator 10 a compensating sleeve 38 is provided.
  • the concavely dented Detonator founded 18 is termed Subscriber to a detonator shell 40.
  • the detonator jacket 40, the extension sleeve 36 of the centering element 26, the compensating sleeve 38 between the extension sleeve 36 and the peripheral sleeve 34 of the bottom closure element 30 and the peripheral sleeve 34 are welded tightly to one another at the connection side remote from the concaved detonator bottom 18. This tight welding is designated by the reference numeral 42.
  • FIG. 1 shows a miniature detonator 10 enlarged longitudinally illustrated in which the primary charge 22 is thermally initiated by means of the electric bridge element 28, the shows Fig. 2 enlarged longitudinally cut an embodiment of the miniature detonator 10, which mechanically by means of a shock or friction sensitive set 44 is initiated. This can happen, for example, with the help of a needle 46, which in Fig. 2 is indicated in sections with thin dashed lines.
  • Adjacent to the impact- or friction-sensitive set 44 is a primary charge 22 and adjoined by a secondary charge 24.
  • the reference numeral 18 is also in Fig. 2 the concave dented Detonatorboden designated, which is intended for forming in a flat disc (flyer) 20 high speed, which also in Fig. 2 is illustrated schematically by thin dashed lines.
  • the shock or friction sensitive set 44 is provided in a hat-shaped first housing part 48.
  • the primary charge 22 and the secondary charge 24 are provided in a reverse hat-shaped second housing part 50.
  • the second housing part 50 is integrally formed with the concaved dented Detonatorboden 18.
  • the first and second housing parts 48 and 50 are tightly welded together. This weld is in Fig. 2 designated by the reference numeral 52.
  • the miniature detonator 10 forms a first stage of a miniature ignition chain, the second stage of which is formed by an insensitive first booster 54 (see the Figures 3 . 5 and 6 ).
  • the insensitive first booster 54 has an input diameter that matches the output diameter of the miniature detonator 10.
  • the first booster 54 has an insensitive explosive charge 56, which is provided in a funnel-shaped widening receiving space 58 of a first booster housing 60.
  • the funnel-shaped enlarged receiving space 58 in the first booster housing 60 is closed on the side facing the miniature detonator with a closing element 62 and on the other side facing away from it by a closing element 64 (see FIGS Figures 3 and 5 ).
  • the insensitive first booster 54 can be combined or combined with a second booster stage 66, which in Fig. 4 from the first booster 54 according to FIG Fig. 3 axially spaced and in Fig. 5 is shown combined with the first booster 54.
  • the second booster stage 66 has an associated second booster housing 68 which is formed with a likewise funnel-shaped widening receiving space 70.
  • an explosive charge 72 is provided in the receiving space 70.
  • the receiving space 70 of the second booster housing 68 of the second booster stage 68 is at the first booster 54 (see Fig. 3 ) facing side by means of a Closing element 74 and on the side facing away from the second side closed by a closing element 76.
  • the end element 64 of the first booster 54 may be concave-dented to form a flyer. Is in Fig. 3 illustrated by an arcuate, dashed line 78. Likewise, it is possible for the end element 76 of the second booster stage 66 to be concave-dented to form a flyer. Is in Fig. 4 illustrated by the dashed line 80.
  • FIG. 5 illustrates the Fig. 5 a firing chain 12 in which the first booster 54 and the second booster stage 66 each form independent components which are disposed adjacent to each other.
  • Fig. 6 an embodiment of the ignition chain 12, in which the second booster stage 66 are provided with their explosive charge 72 with the first booster 54 with its explosive charge 56 in a common booster housing 82 adjacent to each other.
  • This is therefore a monolithic structure of a firing amplifier for a miniature detonator 10 according to the FIGS. 1 or 2 ,

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)
  • Emergency Lowering Means (AREA)
EP09001482.0A 2008-02-06 2009-02-04 Détonateur miniature Withdrawn EP2088394A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200810007719 DE102008007719B4 (de) 2008-02-06 2008-02-06 Miniatur-Detonator

Publications (2)

Publication Number Publication Date
EP2088394A2 true EP2088394A2 (fr) 2009-08-12
EP2088394A3 EP2088394A3 (fr) 2013-05-29

Family

ID=40578777

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09001482.0A Withdrawn EP2088394A3 (fr) 2008-02-06 2009-02-04 Détonateur miniature

Country Status (3)

Country Link
EP (1) EP2088394A3 (fr)
DE (1) DE102008007719B4 (fr)
ZA (1) ZA200900827B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2090860A2 (fr) 2008-02-13 2009-08-19 JUNGHANS Microtec GmbH Chaîne d'allumage miniaturisée

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1163275A (en) * 1966-09-12 1969-09-04 Lockheed Aircraft Corp Electrically Fired Blasting Initiator
NL6818377A (fr) * 1967-12-27 1969-07-01
DE3310253C1 (en) * 1983-03-22 1987-03-12 Messerschmitt Boelkow Blohm Charge chain composed of a plurality of charges arranged in succession
GB2190730B (en) * 1986-05-22 1990-10-24 Detonix Close Corp Detonator firing element
DE4026655A1 (de) * 1990-08-23 1992-02-27 Diehl Gmbh & Co Elektrischer detonator
DE4214327C1 (en) * 1992-04-30 1993-09-09 Deutsche Aerospace Ag, 80804 Muenchen, De High shock resistant detonator system - has additional pressed charge for variable initiation ability
DE19960642B4 (de) * 1999-08-05 2007-08-02 Delphi Technologies, Inc., Troy Pyrotechnische Zündkette

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2090860A2 (fr) 2008-02-13 2009-08-19 JUNGHANS Microtec GmbH Chaîne d'allumage miniaturisée
EP2090860A3 (fr) * 2008-02-13 2013-05-29 JUNGHANS Microtec GmbH Chaîne d'allumage miniaturisée

Also Published As

Publication number Publication date
DE102008007719B4 (de) 2009-10-15
ZA200900827B (en) 2009-12-30
DE102008007719A1 (de) 2009-08-13
EP2088394A3 (fr) 2013-05-29

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