EP0932015A1 - Détonateur - Google Patents

Détonateur Download PDF

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Publication number
EP0932015A1
EP0932015A1 EP99100536A EP99100536A EP0932015A1 EP 0932015 A1 EP0932015 A1 EP 0932015A1 EP 99100536 A EP99100536 A EP 99100536A EP 99100536 A EP99100536 A EP 99100536A EP 0932015 A1 EP0932015 A1 EP 0932015A1
Authority
EP
European Patent Office
Prior art keywords
detonator
bridge
ignition
smd
housing base
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
EP99100536A
Other languages
German (de)
English (en)
Other versions
EP0932015B1 (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 a detonator according to the Preamble of claim 1.
  • EP 0 248 977 A1 describes a carrier for one electric bridge igniter and a method for its Manufacturing known.
  • the bridge igniter is for ignition of priming, delay and pyrotechnic Mixtures as well as for the ignition of primary igniters and rates provided.
  • This well-known electrical Bridge igniter consists of one in a metallic Outer ring inserted ceramic body with a hole or with several holes. There is one in each hole solid or tubular contact pin as power supply firmly and tightly fitted. Each hole is one electrically conductive layer surrounded flat. Is located between the electrically conductive layers the ignition bridge.
  • the ignition bridge can be replaced by a Atomization or by means of a vapor deposition technique in a vacuum or generated by a screen printing process.
  • 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. Here 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 or a bridge layer element for the ignition bridge is replaced by a miniature SMD resistor (Surface Mounted Device).
  • SMD resistors are readily available on the market at low cost.
  • the resistance value can advantageously be freely selected within wide limits regardless of the particular design of the SMD resistor. Resistance values between ⁇ 1 Ohm and> kOhm are available in almost all sizes of such SMD resistors.
  • the desired resistance value within the standard series (eg E24, E48 or E96) can be selected in a sufficiently finely graduated manner; and that the resistance tolerance of the resistance value of an SMD resistor forming the ignition bridge with values of ⁇ 1% can be selected from the standard program of the SMD resistors, and that the responsiveness, ie the peak power for igniting the firing rate of the detonator by selecting the design or
  • the size of the SMD resistor can be freely selected within wide limits; and that the ignition sensitivity can be influenced reproducibly within wide limits by the selection of the resistance technology (such as thick-film or thin-film resistance) and by the treatment of the resistance layer (with or without coating).
  • a size 0402 SMD resistor has a continuous power loss of the order of 50 to 60 mW.
  • the temperatures required to initiate the detonator's firing rate of up to 400 ° C can be reached with a short delay time.
  • Larger sizes, such as 0603, 0805 or 1206, have correspondingly higher power losses and therefore also require correspondingly higher peak powers in order to reach the initiation temperature at the boundary layer with the detonator's priming charge.
  • the inventive use of known SMD resistors as the ignition bridge of the detonator makes it possible in an advantageous manner while maintaining the known mounting conditions for such SMD resistors, for example on printed circuit boards, ceramic substrates, transistor bases, IC packages or the like.
  • the response sensitivity as desired to vary on the order of a decade, to be able to freely select the resistance value of the SMD resistor forming the ignition bridge within five decades as desired, and to be able to specify the resistance tolerance of the SMD resistor ⁇ as 1%.
  • 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)
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 true EP0932015A1 (fr) 1999-07-28
EP0932015B1 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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004076960A1 (fr) * 2003-02-27 2004-09-10 Dynitec Gmbh Detonateur electrique

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004004668A1 (de) * 2004-01-30 2005-08-25 Dynitec Gmbh Zünd- und Anzündelemente

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE3537820A1 (de) * 1985-10-24 1987-04-30 Dynamit Nobel Ag Elektronischer zuender
DE3613134A1 (de) 1986-04-18 1987-10-22 Diehl Gmbh & Co Elektrischer brueckenzuender
EP0248977A1 (fr) 1986-02-27 1987-12-16 Dynamit Nobel Aktiengesellschaft Elément d'amorçage électrique et son procédé de fabrication
US4729315A (en) * 1986-12-17 1988-03-08 Quantic Industries, Inc. Thin film bridge initiator and method therefor
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
WO1996030714A1 (fr) * 1995-03-31 1996-10-03 Davey Bickford Initiateur electropyrotechnique, procede de realisation d'un tel initiateur et systeme de securite pour vehicule
US5682008A (en) * 1994-05-31 1997-10-28 State Of Israel Rafael - Armament Development Authority Monolithic semiconductor igniter for explosives and pyrotechnic mixtures and a process for manufacturing therefore

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL270122A (fr) * 1961-10-05
DE2747163A1 (de) * 1977-10-20 1979-04-26 Dynamit Nobel Ag Elektrisches anzuendelement
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

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
DE3537820A1 (de) * 1985-10-24 1987-04-30 Dynamit Nobel Ag Elektronischer zuender
EP0248977A1 (fr) 1986-02-27 1987-12-16 Dynamit Nobel Aktiengesellschaft Elément d'amorçage électrique et son procédé de fabrication
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
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
US5682008A (en) * 1994-05-31 1997-10-28 State Of Israel Rafael - Armament Development Authority Monolithic semiconductor igniter for explosives and pyrotechnic mixtures and a process for manufacturing therefore
WO1996030714A1 (fr) * 1995-03-31 1996-10-03 Davey Bickford Initiateur electropyrotechnique, procede de realisation d'un tel initiateur et systeme de securite pour vehicule

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004076960A1 (fr) * 2003-02-27 2004-09-10 Dynitec Gmbh Detonateur electrique

Also Published As

Publication number Publication date
EP0932015B1 (fr) 2001-08-16
DE59900192D1 (de) 2001-09-20
DE19802432A1 (de) 1999-08-26

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