EP0932015B1 - Détonateur - Google Patents

Détonateur Download PDF

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Publication number
EP0932015B1
EP0932015B1 EP99100536A EP99100536A EP0932015B1 EP 0932015 B1 EP0932015 B1 EP 0932015B1 EP 99100536 A EP99100536 A EP 99100536A EP 99100536 A EP99100536 A EP 99100536A EP 0932015 B1 EP0932015 B1 EP 0932015B1
Authority
EP
European Patent Office
Prior art keywords
detonator
ignition
smd
bridge
resistor
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.)
Expired - Lifetime
Application number
EP99100536A
Other languages
German (de)
English (en)
Other versions
EP0932015A1 (fr
Inventor
Harald Wich
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 EP0932015A1 publication Critical patent/EP0932015A1/fr
Application granted granted Critical
Publication of EP0932015B1 publication Critical patent/EP0932015B1/fr
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
    • 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

Definitions

  • the invention relates to an electrothermal detonator according to the preamble of Claim 1 and also extends to the use of a commercially available SMD resistor for creating such a detonator.
  • Detonators in which an ignition bridge can be reached by supplying electrical energy Evaporation is heated to the ignition charge in contact with the ignition bridge Heating up to at least its initialization temperature are widely described and in use.
  • the classic design which will be discussed in more detail below, is one self-supporting resistance wire for bridging two connection poles for feeding of the electrical ignition current.
  • the semiconductor substrate is used for the ignition bridge designed as a controllable electronic switch to ensure that only in the presence of two different control criteria, the ignition current over the Bridge can be released.
  • All of these detonators are based on technology monolithically integrated circuits with their known advantages in terms of Mass production, but also their known disadvantages in terms of yield and before all of the problems of individual settings required in practice for the respective
  • EP-A-0 248 977 Carrier for a bridge igniter for initiating ignition sets, delay sets and pyrotechnic mixtures and primary primers and primers provided at which is inserted into a metal outer ring, a pierced ceramic body, which for Includes contact pins for the power supply.
  • the ignition bridge between them Contact pins is formed between electrically conductive surfaces on the ceramic body, which flatly surround the holes.
  • Ignition bridge can be the methods of atomization or vapor deposition or Screen printing can be used.
  • An electric bridge igniter with one versus one metallic housing insulates built-in glow bridge wire is known from DE 36 13 134 A1.
  • An unwanted one voltage dependent response due to electrostatic charge shifts on both sides parasitic arcing lines with simple to avoid manufacturing technical means
  • Wire ends of the glow plug wire including the Surrounding areas of their attachment points on the Terminal poles of the bridge igniter with an insulating layer made of insulating varnish, which after a dive from arcuate bridge wire center area expires or the is dripped onto the area surrounding the attachment points.
  • DE 42 36 729 A1 describes a squib with an insulating pole body with electrically conductive Longitudinal stripes, with one arranged on the polar body Glow plug and with connecting wires, the glow plug and the connecting wires each with the longitudinal strips over Solder points are connected, and with at least one Detonator and an outer top coat that matches the detonator covered.
  • detonators work after that electrothermal principle. I.e. that by feeding electrical energy the detonator's ignition bridge is usually strongly heated until evaporation. there becomes the one in contact with the ignition bridge Ignition charge warms up beyond its initiation limit and ignition of the primer initiated.
  • Known detonators often have a very low resistance Ignition bridge on. Such low-resistance ignition bridges are however, is difficult to control electronically.
  • the same detonators are known in which the ignition bridge is one has moderate resistance.
  • Such ignition bridges the latter type are better electronic controllable, due to the small geometries of the Ignition bridges, e.g. of the wire diameter, however, they are relatively difficult to manufacture.
  • Another shortcoming known detonators is that the Resistance value of your ignition bridge always with large Resistance tolerances is affected. For example, the Resistance tolerance of a known detonator with a Resistance value of its ignition bridge of 15 ohms in the range of ⁇ 4 ohms, i.e. the resistance tolerance is on the order of ⁇ 20%.
  • a bridge wire is used in the detonator according to the invention or a bridge layer element for the ignition bridge a miniature SMD resistor (Surface Mounted Device) replaced.
  • miniature SMD resistors are on the Market readily available at low cost.
  • the Resistance value is advantageously independent of the respective design of the SMD resistor in wide Freely selectable limits. Resistance values between ⁇ 1 ohm and> kOhm are in almost all sizes of such SMD resistors available. Other advantages are that the desired resistance value within the standard series (e.g.
  • E24, E48 or E96 graded sufficiently fine is selectable; and that the resistance tolerance of the resistance value an SMD resistor forming the ignition bridge with values of ⁇ 1% from the standard range of SMD resistors can be chosen and that the responsiveness, i.e. the peak power for igniting the primer the detonator by selecting the design or
  • the size of the SMD resistor can be freely selected within wide limits is; as well as that the ignition sensitivity within wide limits by choosing the resistance technology (about Thick film or thin film resistance) and treatment the resistance layer (with or without coating) is good can be reproducibly influenced.
  • E.g. has a size 0402 SMD resistor Continuous power loss of the order of 50 to 60 mW.
  • SMD resistor Continuous power loss of the order of 50 to 60 mW.
  • a defined control of such an SMD resistor with a peak power in the range of some 10 W. are those for the initiation of the detonator primer required temperatures of the order of magnitude up to 400 ° C with a short delay time.
  • Larger Sizes such as 0603, 0805 or 1206 have accordingly higher construction losses and therefore also require correspondingly higher peak performances around the initiation temperature at the boundary layer with the detonator's primer to reach.
  • SMD resistors as the detonator's ignition bridge, it is in advantageously possible while maintaining the known mounting conditions for such SMD resistors e.g. on printed circuit boards, ceramic substrates, Transistor sockets, IC packages or the like.
  • the Responsiveness by order of magnitude a decade to vary the resistance value of the Firing bridge of SMD resistance within five To be able to choose the decades as desired, and the Resistance tolerance of the SMD resistor ⁇ than 1% to be able to specify.
  • Another very special advantage of using one known SMD resistor for the ignition bridge of the Detonator according to the invention consists in the possibility easily two or more than two "heating elements" per To be able to use detonator or flame igniter.
  • the SMD resistors are expedient interconnected on one side. This common connection and the associated with the individual SMD resistors second connectors are from the housing of the detonator led out to create the opportunity at High reliability applications with redundant ignition to be able to apply.
  • the figure shows a training in a sectional view of the detonator 10, which is made on a housing base 12 electrically insulating material contact surfaces 14 has that in thick or thin film technology are realized.
  • the contact surfaces 14 are with Connection pins 16 electrically connected, which itself extend through the housing base 12.
  • the contact surfaces 14 on the inside of the housing base 12 form connection contacts for SMD resistors 18.
  • the SMD resistors 18 form an ignition bridge 20 for one Ignition charge 22 of the detonator 10.
  • the ignition charge 22 is on the SMD resistors 18 or on the housing base 12 pressed on.
  • the detonator 10 has a housing 24 which is surrounded by a Housing sleeve 26 and a cover member 28 is formed. In there is a space 30 enclosed by the housing 24 Amplifier set 32 of the detonator 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)
  • Automotive Seat Belt Assembly (AREA)

Claims (5)

  1. Détonateur (1) électrothermique, comportant une résistance électrique qui forme un pont d'allumage (20) pour un set d'allumage (22) et qui est fixée de manière électriquement conductrice à un fond de boítier (12) pour un boítier (24) du détonateur avec contacts de connexion (14), caractérisé en ce que la résistance est une résistance SMD (18) du commerce.
  2. Détonateur selon la revendication 1, caractérisé en ce que le set d'allumage (22) est pressé sur la ou les résistances SMD (18) fixée(s) sur le fond (12) du boítier.
  3. Détonateur selon la revendication 2, caractérisé en ce que le set d'allumage (22) est combiné à un ensemble d'amplification (32).
  4. Détonateur selon l'une des revendications 1 à 3, caractérisé en ce qu'au moins deux résistances SMD (18) sont interconnectées d'un côté, la connexion commune (16) et les connexions individuelles (16) qui sont associées aux résistances SMD, étant mises en contact avec les contacts de connexion (14) correspondants du fond (12) du boítier.
  5. Utilisation d'une résistance SMD (18) du commerce comme pont d'allumage (20) pour un détonateur (10) électrothermique afin d'initier un set d'allumage (22).
EP99100536A 1998-01-23 1999-01-13 Détonateur Expired - Lifetime EP0932015B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19802432 1998-01-23
DE19802432A DE19802432A1 (de) 1998-01-23 1998-01-23 Detonator

Publications (2)

Publication Number Publication Date
EP0932015A1 EP0932015A1 (fr) 1999-07-28
EP0932015B1 true EP0932015B1 (fr) 2001-08-16

Family

ID=7855407

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99100536A Expired - Lifetime EP0932015B1 (fr) 1998-01-23 1999-01-13 Détonateur

Country Status (2)

Country Link
EP (1) EP0932015B1 (fr)
DE (2) DE19802432A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10308443A1 (de) * 2003-02-27 2004-09-09 Dynltec Gmbh Elektrischer Detonator
DE102004004668A1 (de) * 2004-01-30 2005-08-25 Dynitec Gmbh Zünd- und Anzündelemente

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL270122A (fr) * 1961-10-05
US3292537A (en) * 1965-06-15 1966-12-20 Jr Frank A Goss Multi-signal explosive detonator
US3695178A (en) * 1970-11-09 1972-10-03 Robert E Betts Delta squib circuit
US3906858A (en) * 1974-07-30 1975-09-23 Us Eneregy Research And Dev Ad Miniature igniter
DE2747163A1 (de) * 1977-10-20 1979-04-26 Dynamit Nobel Ag Elektrisches anzuendelement
DE3537820A1 (de) * 1985-10-24 1987-04-30 Dynamit Nobel Ag Elektronischer zuender
DE3606364A1 (de) 1986-02-27 1987-09-03 Dynamit Nobel Ag Elektrischer zuendbrueckentraeger zur anzuendung von anzuendsaetzen, verzoegerungssaetzen und pyrotechnischen mischungen sowie zur zuendung von primaerzuendstoffen und -saetzen und verfahren zu seiner herstellung
DE3613134A1 (de) 1986-04-18 1987-10-22 Diehl Gmbh & Co Elektrischer brueckenzuender
US4729315A (en) * 1986-12-17 1988-03-08 Quantic Industries, Inc. Thin film bridge initiator and method therefor
JPH0792358B2 (ja) * 1987-09-14 1995-10-09 日本工機株式会社 電気式点火装置用点火器
US4831933A (en) * 1988-04-18 1989-05-23 Honeywell Inc. Integrated silicon bridge detonator
DE4236729A1 (de) 1992-10-30 1994-05-05 Dynamit Nobel Ag Zünd- bzw. Anzündpille
IL109841A0 (en) * 1994-05-31 1995-03-15 Israel State Monolithic semiconductor igniter for explosives and pyrotechnic mixtures and process for its manufacture
FR2732455B1 (fr) * 1995-03-31 1997-06-13 Davey Bickford Initiateur electropyrotechnique, procede de realisation d'un tel initiateur et systeme de securite pour vehicule

Also Published As

Publication number Publication date
DE59900192D1 (de) 2001-09-20
DE19802432A1 (de) 1999-08-26
EP0932015A1 (fr) 1999-07-28

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