EP0248977B1 - Elektrisches Anzündelement und Verfahren zu seiner Herstellung - Google Patents

Elektrisches Anzündelement und Verfahren zu seiner Herstellung Download PDF

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Publication number
EP0248977B1
EP0248977B1 EP87102055A EP87102055A EP0248977B1 EP 0248977 B1 EP0248977 B1 EP 0248977B1 EP 87102055 A EP87102055 A EP 87102055A EP 87102055 A EP87102055 A EP 87102055A EP 0248977 B1 EP0248977 B1 EP 0248977B1
Authority
EP
European Patent Office
Prior art keywords
contact pins
ceramic body
ignition
ignition bridge
metallic
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
EP87102055A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0248977A1 (de
Inventor
Richard Dr. Bender
Anton Bretfeld
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.)
Dynamit Nobel AG
Original Assignee
Dynamit Nobel AG
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 Dynamit Nobel AG filed Critical Dynamit Nobel AG
Priority to AT87102055T priority Critical patent/ATE71217T1/de
Publication of EP0248977A1 publication Critical patent/EP0248977A1/de
Application granted granted Critical
Publication of EP0248977B1 publication Critical patent/EP0248977B1/de
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 electrical ignition element with a ceramic body as the ignition bridge carrier, which is mounted in a metallic outer sleeve and has one or more bores into which contact pins are fitted as power supply lines, between which there is an ignition bridge, and a method for producing an electrical ignition element.
  • the invention has for its object to make an electrical ignition element available that does not have the disadvantages of the previously known constructions, is mechanically highly resilient and is tight even after repeated thermal cycling. At the same time, a method is to be developed for the production of this ignition element, which can be carried out comparatively easily without complex post-processing, but with great certainty with regard to the process products and their properties.
  • the solution to the problem is an electrical ignition element of the type mentioned, which is characterized in that the outer sleeve and the contact pins are connected to the ceramic body in a gastight manner by brazing or glazing.
  • Stainless steel which can also be used as a material for the contact pins, has proven particularly useful as the material for the metallic outer sleeve.
  • other metallic materials for the metallic outer sleeve and / or the contact pins for example aluminum, copper, nickel and their alloys, titanium, zirconium, tantalum and other heat-resistant and high-melting metals and alloys, especially those under the Description KOVAR known cobalt-nickel-iron alloy.
  • Ceramic materials can be used as the material for the ceramic body, in particular those based on aluminum oxide, silicon dioxide, silicon nitride, silicon carbide and zirconium dioxide.
  • the tight and firm connection or edging between the metallic outer sleeve and the ceramic body on the one hand and between the ceramic body and the contact pins on the other hand takes place by brazing or by glazing.
  • the materials known to any person skilled in the art, with which metallic materials and ceramic materials are tightly connected, can be used for the glazing.
  • alkali and alkaline earth silicate glasses, glasses based on borosilicate and glasses containing oxides of rare earth have proven particularly useful.
  • a glass which is suitable for this glazing connection between metallic and ceramic material a glass of the following composition can be used:
  • ceramic pastes for example the pastes shown below in their composition:
  • Silicon or silicon alloys mixed with quartz powder, glass powder and clay can also be used to permanently bond the ceramic with the metallic materials.
  • the conductive layer applied in the form of a sheet around the contact pins is generally a thin or thick film layer applied in a customary manner, which has been produced, for example, by screen printing or by electroplating.
  • Precious metals in particular have been chosen as materials for this conductive layer and precious metal alloys of Group VIII of the Periodic Table, preferably platinum or palladium and their alloys also with silver and / or gold.
  • the actual ignition bridge between the contact pins or the conductive layers enclosing them in the form of a surface can either be formed by a wire, as can be seen, for example, from FIG. 4, which will be explained in detail later.
  • the application of the ignition bridge also has special advantages in screen printing technology; resistance ranges from 1 to 100 ohms can be achieved in this way.
  • the ignition bridge it is also possible to apply the ignition bridge as a thin film in an atomization process known per se or by vapor deposition in a vacuum.
  • the wire-shaped ignition bridges are either soldered or welded on.
  • Precious metal materials as already mentioned above, have also proven particularly useful as materials for these ignition bridges.
  • These resistance bridges which are specially applied using screen printing technology, have an already sharply defined resistance range after heat treatment, but, if desired, it is possible to achieve resistance values of even smaller fluctuation ranges by post-processing in the laser trimming method known to the person skilled in the art.
  • Figure 1 shows in section the metallic outer sleeve 1 with the fitted ceramic body 2 in the form of a ceramic blank with here, for example, two contact pins 3.
  • the ceramic body 2 is tightly connected to the metallic outer sleeve 1 on the one hand and the contact pins 3 on the other hand, by brazing or by blowing using the glasses or pastes exemplified above in their composition.
  • FIG. 2 shows a simplified top view of the ignition element of FIG. 1, only the contact pins 3 with the conductive layers 4 surrounding them in a flat manner and the ignition bridge 5, which here, like the conductive layers 4, have been applied using the screen printing process, being shown for better clarity .
  • FIGS. 3 and 4 show a variant of the ignition element shown in FIGS. 1 and 2 according to the invention, in which the ignition bridge is formed by a wire 5a which establishes the conductive connection between the contact pins 3.
  • the method for producing the electrical ignition element according to the invention is characterized in that a ceramic body having one or more bores is fitted into a metallic, geometrically shaped outer ring and is connected to the metallic outer ring by brazing or glazing, whereupon the metallic contact pins are inserted into the bores of the Ceramic body fitted and also connected to the ceramic body by brazing or glazing and then either wire-shaped ignition bridges between the Contact pins are produced by soldering or welding or, preferably, ignition bridges are produced by sputtering or vapor deposition in a vacuum or screen printing process.
  • an electrically conductive layer is first applied in the form of a surface around the contact pins, and the connection between the contact pins and the ignition bridge is then established via this.
  • the ignition element with the ceramic body according to the invention is distinguished from the previously known embodiments in that, owing to the higher compressive strength of the ceramic materials, a far higher mechanical strength can be achieved than was possible with glass leadthroughs.
  • the ceramic materials have a higher thermal conductivity than normal glasses, which has proven extremely favorable, for example, for the first time production of 1A / 1W ignition elements.
  • the prerequisite is that the outer sleeve and the contact pins have been connected to the ceramic body in a gastight manner by brazing or by glazing.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuses (AREA)
  • Resistance Heating (AREA)
  • Spark Plugs (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
EP87102055A 1986-02-27 1987-02-13 Elektrisches Anzündelement und Verfahren zu seiner Herstellung Expired - Lifetime EP0248977B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87102055T ATE71217T1 (de) 1986-02-27 1987-02-13 Elektrisches anzuendelement und verfahren zu seiner herstellung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863606364 DE3606364A1 (de) 1986-02-27 1986-02-27 Elektrischer zuendbrueckentraeger zur anzuendung von anzuendsaetzen, verzoegerungssaetzen und pyrotechnischen mischungen sowie zur zuendung von primaerzuendstoffen und -saetzen und verfahren zu seiner herstellung
DE3606364 1986-02-27

Publications (2)

Publication Number Publication Date
EP0248977A1 EP0248977A1 (de) 1987-12-16
EP0248977B1 true EP0248977B1 (de) 1992-01-02

Family

ID=6295070

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87102055A Expired - Lifetime EP0248977B1 (de) 1986-02-27 1987-02-13 Elektrisches Anzündelement und Verfahren zu seiner Herstellung

Country Status (5)

Country Link
EP (1) EP0248977B1 (es)
AT (1) ATE71217T1 (es)
DE (2) DE3606364A1 (es)
ES (1) ES2028803T3 (es)
GR (1) GR3003495T3 (es)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006004036A1 (de) * 2006-01-27 2007-08-09 Schott Ag Metall-Fixiermaterial-Durchführung und Verwendung einer derartigen Durchführung sowie Airbag und Gurtspanner mit einer Zündeinrichtung
US8276514B2 (en) 2003-03-03 2012-10-02 Schott Ag Metal fixing material bushing and method for producing a base plate of a metal fixing material bushing
US8733250B2 (en) 2006-01-27 2014-05-27 Schott Ag Metal-sealing material-feedthrough and utilization of the metal-sealing material feedthrough with an airbag, a belt tensioning device, and an ignition device
DE112007002750B4 (de) * 2006-11-28 2014-11-20 Schott Ag Zündvorrichtung für eine pyrotechnische Schutzvorrichtung
US9423218B2 (en) 2010-09-17 2016-08-23 Schott Ag Method for producing a ring-shaped or plate-like element

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
US5404263A (en) * 1992-08-27 1995-04-04 Oea, Inc. All-glass header assembly used in an inflator system
DE4307774A1 (de) * 1993-03-12 1994-09-15 Dynamit Nobel Ag Anzündeinrichtung
US6274252B1 (en) 1994-08-04 2001-08-14 Coors Ceramics Company Hermetic glass-to-metal seal useful in headers for airbags
DE19640127A1 (de) * 1996-09-28 1998-04-02 Dynamit Nobel Ag Verfahren zum Abgleich von Schichtwiderständen mit einer Excimer-Laserstrahlung
AT405591B (de) 1997-10-03 1999-09-27 Schaffler & Co Heizelement und verfahren zu dessen herstellung
DE19802432A1 (de) 1998-01-23 1999-08-26 Diehl Stiftung & Co Detonator
SE517704C2 (sv) 1999-05-10 2002-07-09 Tzn Forschung & Entwicklung Patron med elektrotermisk tändanordning
DE19936650C2 (de) * 1999-05-10 2002-10-24 Rheinmetall W & M Gmbh Patrone
DE20314580U1 (de) * 2003-03-03 2004-08-05 Schott Glas Metall-Fixiermaterial-Durchführung
ATE396375T1 (de) * 2003-03-03 2008-06-15 Schott Ag Metall-fixiermaterial-durchführung und verfahren zur fertigung eines grundkörpers einer metall- fixiermaterial-durchführung
US10684102B2 (en) 2010-09-17 2020-06-16 Schott Ag Method for producing a ring-shaped or plate-like element
DE102018005733B4 (de) * 2018-07-20 2021-01-14 Schott Ag Glas-Metall-Durchführung
CN113513953B (zh) * 2021-03-25 2022-07-26 四川仲玛智造科技有限公司 一种用于生产电点火头支架的生产线

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3659527A (en) * 1970-10-29 1972-05-02 Atomic Energy Commission High temperature detonator
SE431681B (sv) * 1977-04-19 1984-02-20 Bofors Ab Eltenddon
CH643056A5 (de) * 1978-08-10 1984-05-15 Inventa Ag Elektrische zuendvorrichtung.

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8276514B2 (en) 2003-03-03 2012-10-02 Schott Ag Metal fixing material bushing and method for producing a base plate of a metal fixing material bushing
US8327765B2 (en) 2003-03-03 2012-12-11 Schott Ag Metal fixing material bushing and method for producing a base plate of a metal fixing material bushing
DE102006004036A1 (de) * 2006-01-27 2007-08-09 Schott Ag Metall-Fixiermaterial-Durchführung und Verwendung einer derartigen Durchführung sowie Airbag und Gurtspanner mit einer Zündeinrichtung
EP2187162A2 (de) 2006-01-27 2010-05-19 Schott AG Metall-Fixiermaterial-Durchführung und Verwendung einer derartigen Durchführung sowie Airbag und Gurtspanner mit einer Zündeinrichtung
EP2270417A2 (de) 2006-01-27 2011-01-05 Schott Ag Metall-Fixiermaterial-Durchführung und Verwendung einer derartigen Durchführung sowie Airbag und Gurtspanner mit einer Zündeinrichtung
US8733250B2 (en) 2006-01-27 2014-05-27 Schott Ag Metal-sealing material-feedthrough and utilization of the metal-sealing material feedthrough with an airbag, a belt tensioning device, and an ignition device
EP3104114A1 (de) 2006-01-27 2016-12-14 Schott Ag Metall-fixiermaterial-durchführung und verfahren zur fertigung eines grundkörpers einer metall-fixiermaterial-durchführung
DE112007002750B4 (de) * 2006-11-28 2014-11-20 Schott Ag Zündvorrichtung für eine pyrotechnische Schutzvorrichtung
US9423218B2 (en) 2010-09-17 2016-08-23 Schott Ag Method for producing a ring-shaped or plate-like element
US9651345B2 (en) 2010-09-17 2017-05-16 Schott Ag Method for producing a ring-shaped or plate-like element

Also Published As

Publication number Publication date
DE3775623D1 (de) 1992-02-13
EP0248977A1 (de) 1987-12-16
GR3003495T3 (en) 1993-02-17
ES2028803T3 (es) 1992-07-16
DE3606364A1 (de) 1987-09-03
ATE71217T1 (de) 1992-01-15

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