EP0014401A1 - Allumeur électrique pour cordeaux détonants, compositions de retardement et détonateurs - Google Patents

Allumeur électrique pour cordeaux détonants, compositions de retardement et détonateurs Download PDF

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Publication number
EP0014401A1
EP0014401A1 EP19800100410 EP80100410A EP0014401A1 EP 0014401 A1 EP0014401 A1 EP 0014401A1 EP 19800100410 EP19800100410 EP 19800100410 EP 80100410 A EP80100410 A EP 80100410A EP 0014401 A1 EP0014401 A1 EP 0014401A1
Authority
EP
European Patent Office
Prior art keywords
ignition
detonators
delay
squib
battery
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
EP19800100410
Other languages
German (de)
English (en)
Other versions
EP0014401B1 (fr
Inventor
Wilhelm Grosse-Benne
Paul Beermann
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 Verwaltungs Stiftung
Original Assignee
Diehl GmbH and Co
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 GmbH and Co filed Critical Diehl GmbH and Co
Publication of EP0014401A1 publication Critical patent/EP0014401A1/fr
Application granted granted Critical
Publication of EP0014401B1 publication Critical patent/EP0014401B1/fr
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00—Details of fuzes
    • F42C19/06—Electric contact parts specially adapted for use with electric fuzes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42D—BLASTING
    • F42D1/00—Blasting methods or apparatus, e.g. loading or tamping
    • F42D1/04—Arrangements for ignition
    • F42D1/045—Arrangements for electric ignition

Definitions

  • the invention relates to a device for igniting fuses, delay and pyrotechnic sentences, as well as detonators and detonators.
  • Electrical detonators are used to ignite delay and pyrotechnic charges, detonators or detonators. These detonators are mostly constructed according to the following principle. They contain an ignition charge, a delay charge, a primary explosive and a secondary explosive. The primer is usually ignited by electricity (bridge, gap, spark igniter). The resulting pilot flame triggers the burning of the delay set. This then ignites the secondary explosive via a primary explosive, which delivers the explosive force as the actual charge. Electric lighters are lighters with a primer without a detonator. They are used to ignite smoke charges, practice explosive devices and fireworks and are triggered with an igniter.
  • the known electrical detonators are moment or time detonators, which are equipped with a squib, a glow plug, contact lamellae and detonator connecting wires and where the ignition is supplied by the required current from an ignition machine connected to the ignition circuit.
  • detonator's head The essential component of these detonators is the so-called detonator's head. It consists of two contact blades insulated from each other and held in a mutual position by a strong plastic clip. These contact blades are usually made of sheet brass.
  • the glow bridge wire made of, for example, a chromium-nickel alloy is attached to one end of the lamellae. The attachment of the glow plug to the contact lamella is marked by pinching and soldering. The filament forms a loose loop so that it is better protected against mechanical influences. At the other end of the contact lamellae, the bare ends of the igniter wires are pressed in. In this way, a mechanical connection and an electrical contact are made.
  • the glow plug is surrounded by a spherical squib, the composition of which is the same for the detonators of reduced sensitivity.
  • a metalized antistatic lacquer layer protects the head against moisture and forms a Faraday cage as a protection against static voltage equalization through a high-resistance electrical connection with the connecting lamellae.
  • the glow plug If a sufficiently strong current is sent through the glow plug, it glows and ignites the squib. The resulting flame is used for ignition either directly or indirectly via a delay set.
  • the current required for ignition is supplied by an ignition machine connected to the ignition circuit.
  • reaction time For a sufficient heating of the glow bridge, a certain period of current flow is required at a certain current. If the current is stronger, it heats the glow bridge faster. A weaker current, on the other hand, takes more time to heat the glow plug to the point where it ignites the primer. The time that a detonator needs from the start of the current flow until it detonates is called the reaction time.
  • the glow plug of electrical detonators requires a certain amount of energy to heat in order to ignite the primer of the squib. This energy is measured in watt seconds or joules.
  • the ignition pulse is a variable that is characteristic of the sensitivity of the electrical detonators.
  • a storage of the generated charge is therefore only possible with the help of electronic elements.
  • Another piezoelectric energy source is characterized in that pressure is exerted on a piezoelectric transducer via a piston, the piston being lockable after a pressure has been built up.
  • a further piezoelectric ignition is characterized in that the piezoelectric igniter has a piezoelectric element which converts the mechanical shock wave generated when it strikes a target into an electrical voltage and ignites an igniter via a threshold circuit, the igniter via one of the piezo element and of at least one further functional group of switchable or blockable switches can be connected to an electrical power source.
  • the known embodiments of electrical ignitions have the disadvantage that, if they are used for the direct ignition of detonating cords, delay sets or detonators, they can only be ignited by means of an ignition machine or an electrodynamic current generator. These ignitions are complex, time-consuming and expensive. For this reason, detonating cords, delay sets, in particular for pyrotechnic purposes or detonating detonators via delay sets are still used with hand-operated trigger detonators, whereby these detonators are triggered by means of friction using a friction primer or by means of a blow using a percussion primer or tapping primer .
  • Electric detonators that can be triggered without a detonator or without an electrodynamic current transmitter and are used to ignite detonating cords, delay sets, detonators, etc. are not yet known.
  • the aim of the invention is to provide an electrical detonator that has sufficient electrical ignition power for the ignition of detonating cords, delay sets and detonators, and also always produces constant current and voltage values, with the smallest mechanical outlay and a small housing structure. According to the present invention, this object is achieved according to the characterizing features of claim 1.
  • copper wires can also be used, the copper being used as a glow wire when Heating, for example with silicon, enters an alloy.
  • batteries should be used in a known manner which meet today's military requirements, in particular have a long service life, are waterproof, function perfectly in the required military temperature range and are also insensitive to electrostatic charges. These batteries are part of the state of the art and are widely used today in military consumer goods, preferably in electronic weapon construction.
  • the battery and the squib can be arranged interchangeably in the housing of the device.
  • the replacement could be done in a known manner by clamping, snapping or other attachment options.
  • the squib can be equipped with a bang set, for the purpose that the bang set is triggered when the detonator is being handled and when the ignition wire is heated, and the soldier or handling man can also perceive the function of the device acoustically.
  • the advantage is that the firing time of the delay set or the fuse begins from the moment the pop set is triggered.
  • the triggering of the pop set indicates that the device has worked properly.
  • Pop sets are well known in pyrotechnics. In addition to the use of fireworks, they are used for echosounders or to simulate live ammunition. For this reason, it is not necessary to specify the technical composition of the pop set.
  • the phon strength can be adjusted by applying more or less the pop set on the squib.
  • a screw piece with a clamping piece and O-rings for attaching a detonating cord or an opening for inserting a detonator can also be arranged on the housing.
  • the detonator can be designed geometrically so that it is simple and easy to use for the man to be operated. Since the essential components of the detonator can consist of temperature-resistant, impact-resistant plastic, there is a wide variety of shapes and design options.
  • an ignition device of detonating cords, delay sets and detonators is created that meets the military requirements such as safe ignitability, water resistance, fall resistance, temperature resistance, aging resistance, easy handling and last but not least, particularly inexpensive.
  • Another advantage is that, for. B. can be used for the squib or the battery on existing modules.
  • the principle of the device relating to the ignition of detonating cords, delay sets, detonators, detonators or other priming sets and pyrotechnic sets is inventive, new and not part of the prior art. Neither an igniter nor an electrodynamic current generator is required. The exact ignition is achieved by the simple-acting, inexpensive to manufacture and simple device with the main element battery with squib.
  • a housing 1 made of plastic there is a receiving part 3, which has openings and a recess for receiving the exchangeable battery or the current generator 9 and the exchangeable unit, consisting of an ignition wire with a squib 11.
  • a head 2 is clamped or screwed onto the housing 1.
  • a push button 4 inside which the prestressed compression spring 5 is located.
  • a screwed-on foot nipple 6, 12 in which a delay tube 13 or on the other hand an ignition cord 15 is arranged.
  • the fuse 15 is fastened to the device by means of a screw 6, a clamp 7 and two round cord rings 8. After inserting the fuse 15 up to the squib 11, the screw ring 6 is screwed onto the igniter housing 1, whereby the O - Deform rings 8 and lock the fuse tightly and tightly.
  • the protective cap 14 is unscrewed with the foot nipple 12.
  • the device described in this way functions as follows. After unscrewing the head 2, the contact 10 with the battery 9 to the ignition wire and the squib 11 is closed by pressing the push button 4, the compression spring 5 being compressed. The ignition wire and the squib 11 suddenly heat up and directly ignite the ignition cord 15 or the delay set 13 located under the squib.
  • the compression spring 5 is appropriately dimensioned so that the pressure can be exerted well by hand using the push button 4.
  • the squib 11 is provided with a set of bangs 11 ', the squib 11 is ignited audibly.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)
EP19800100410 1979-01-31 1980-01-28 Allumeur électrique pour cordeaux détonants, compositions de retardement et détonateurs Expired EP0014401B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2903600 1979-01-31
DE19792903600 DE2903600A1 (de) 1979-01-31 1979-01-31 Vorrichtung zur zuendung von zuendschnueren, verzoegerungssaetzen und sprengkapseln

Publications (2)

Publication Number Publication Date
EP0014401A1 true EP0014401A1 (fr) 1980-08-20
EP0014401B1 EP0014401B1 (fr) 1983-06-08

Family

ID=6061792

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800100410 Expired EP0014401B1 (fr) 1979-01-31 1980-01-28 Allumeur électrique pour cordeaux détonants, compositions de retardement et détonateurs

Country Status (2)

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EP (1) EP0014401B1 (fr)
DE (1) DE2903600A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989001601A1 (fr) * 1987-08-14 1989-02-23 Bert Jonsson Systeme de mise a feu et son mode d'amorçage
AU622871B2 (en) * 1987-08-14 1992-04-30 Detnet International Limited An ignition system and a method for the initiation thereof

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1363224A (en) * 1918-11-13 1920-12-28 Mine Safety Appliances Co Shot-firing attachment for electric batteries
US1477735A (en) * 1920-04-21 1923-12-18 Mendel P Weinbach Electric fuse igniter
US2280243A (en) * 1939-11-27 1942-04-21 Stanolind Oil & Gas Co Switch
US2407605A (en) * 1945-03-12 1946-09-10 Hammond Blasting unit and short-circuiting device
US2674946A (en) * 1950-06-14 1954-04-13 Bofors Ab Control device for an electric circuit
FR2116783A5 (fr) * 1970-12-09 1972-07-21 Clausin Pierre
DE7411706U (de) * 1974-04-03 1974-09-19 Beermann P Schraubverbindung, vorzugsweise aus Kunststoff, zum wasserdichten Anbringen einer Zündschnur an eine Sprengkapsel

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3142255A (en) * 1962-10-23 1964-07-28 Richard L Murr Safety fireworks igniter
FR2207318B1 (fr) * 1972-11-21 1976-04-23 Nickel Le
DE2424504C3 (de) * 1974-05-20 1980-02-28 Diehl Gmbh & Co, 8500 Nuernberg Spannabzugzünder für die Zündung einer Zündschnur oder eines Verzogerungssatzes

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1363224A (en) * 1918-11-13 1920-12-28 Mine Safety Appliances Co Shot-firing attachment for electric batteries
US1477735A (en) * 1920-04-21 1923-12-18 Mendel P Weinbach Electric fuse igniter
US2280243A (en) * 1939-11-27 1942-04-21 Stanolind Oil & Gas Co Switch
US2407605A (en) * 1945-03-12 1946-09-10 Hammond Blasting unit and short-circuiting device
US2674946A (en) * 1950-06-14 1954-04-13 Bofors Ab Control device for an electric circuit
FR2116783A5 (fr) * 1970-12-09 1972-07-21 Clausin Pierre
DE7411706U (de) * 1974-04-03 1974-09-19 Beermann P Schraubverbindung, vorzugsweise aus Kunststoff, zum wasserdichten Anbringen einer Zündschnur an eine Sprengkapsel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989001601A1 (fr) * 1987-08-14 1989-02-23 Bert Jonsson Systeme de mise a feu et son mode d'amorçage
AU622871B2 (en) * 1987-08-14 1992-04-30 Detnet International Limited An ignition system and a method for the initiation thereof
US5133257A (en) * 1987-08-14 1992-07-28 Bert Jonsson Ignition system and a method for the initiation thereof

Also Published As

Publication number Publication date
DE2903600C2 (fr) 1987-06-04
EP0014401B1 (fr) 1983-06-08
DE2903600A1 (de) 1980-08-14

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