EP0993678B1 - Pyrotechnisches wirkelement - Google Patents

Pyrotechnisches wirkelement Download PDF

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Publication number
EP0993678B1
EP0993678B1 EP98937540A EP98937540A EP0993678B1 EP 0993678 B1 EP0993678 B1 EP 0993678B1 EP 98937540 A EP98937540 A EP 98937540A EP 98937540 A EP98937540 A EP 98937540A EP 0993678 B1 EP0993678 B1 EP 0993678B1
Authority
EP
European Patent Office
Prior art keywords
base
holding
pyrotechnic
base element
active element
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
EP98937540A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0993678A1 (de
Inventor
Heinz Kern
Wolfgang Mosig
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 AiIS Automotive Ignition Systems GmbH
Original Assignee
Dynamit Nobel AG
Dynamit Nobel GmbH Explosivstoff und Systemtechnik
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, Dynamit Nobel GmbH Explosivstoff und Systemtechnik filed Critical Dynamit Nobel AG
Publication of EP0993678A1 publication Critical patent/EP0993678A1/de
Application granted granted Critical
Publication of EP0993678B1 publication Critical patent/EP0993678B1/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
    • F42B3/006—Explosive bolts; Explosive actuators
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H39/00—Switching devices actuated by an explosion produced within the device and initiated by an electric current
    • H01H39/006—Opening by severing a conductor

Definitions

  • the invention relates to a pyrotechnic active element for Cutting media and / or fluids.
  • a pyrotechnic active element for Cutting media and / or fluids is such.
  • DE 42 11 079 A1 and DE 44 22 177 are pyrotechnic working fuse elements described that a housing having a cavity formed therein, by which transversely to its longitudinal extent in the case of a Electrical conductor to be cut over current extends.
  • a separating piston is arranged in the cavity, when a pyrotechnic charge is fired in the direction is advanced on the conductor to cut it.
  • the invention has for its object a pyrotechnic Active element with a reduced number of components to be installed separately during assembly create.
  • a pyrotechnic is used to achieve this object Active element with the features of claim 1 proposed.
  • the active element according to the invention has, so to speak Carrier for the pyrotechnic charge the electrical Ignition element and to hold the contacts of the Ignition element on a base element with which the separating element connected is.
  • This connection is moisture-tight and in particular gastight, so that when storing the pyrotechnic active element, the pyrotechnic charge not through external influences (intrusion of Moisture) becomes inoperable.
  • the mechanical Connection of base element and separating element is on the one hand so mechanically firm that both parts at Handling and especially when assembling in a parent Unit (e.g. installation in the housing of a electrical fuse element) not inadvertently from each other to solve.
  • connection must be of base element and separating element when the pyrotechnic charge ignites properly, reliably solve without the need for a significant force is so that the entire when the pyrotechnic ignition Charge released energy in kinetic energy of the Separating element is implemented.
  • the pyrotechnic active element according to the invention is generally used in higher-level units at who are concerned with a medium (e.g. an electrical Conductor) or a flowing fluid (liquid or Gas flow or viscous substances) to cut or to interrupt.
  • a medium e.g. an electrical Conductor
  • a flowing fluid liquid or Gas flow or viscous substances
  • the separation tool of the Separating element made of a suitable material (e.g. metal, Ceramic, plastic).
  • the separating tool consists of a securing element non-conductive material, preferably plastic, wherein here in particular materials from the raw material groups Polyamide, polycarbonate, polyphenylene sulfide or the like with mineral, organic or inorganic fillers are to be mentioned.
  • the releasable connection between the base element and the separating element up to a minimum strength cohesive, frictional and / or positive is what in particular by gluing, (Ultrasonic) welding, caulking, blockage or Can be locked.
  • the connection between the separating element and the base element is preferably provided with predetermined breaking points, that break open when the pyrotechnic charge explodes and release the separator.
  • the separator of the Active element according to the invention has the separating tool and a holding element holding this, preferably is integrally formed with the separating tool.
  • Realization of the tightness of the system of the separating element and the base element is provided at least one O-ring.
  • This sealing ring is preferably in a circumferential groove arranged of the base element or the separating element and lies in its area projecting beyond the circumferential groove close to the other element.
  • the holding element the separating element (or alternatively the base element) preferably has a protruding wrap-around collar, which the base element (or alternatively the holding element) encloses.
  • the figures 1 and 2 show a side view of FIG Longitudinal section through a pyrotechnic active element 10, the has a base element 12 and a separating element 14 which are welded to one another at 16 points. Both Parts of the active element 10 consist of the same plastic material and can therefore be ultrasonically welded.
  • the base element is rotationally symmetrical and in particular provided with cylindrical individual sections. Viewed in its axial extent In the middle section, the base element has a collar 18 from which extensions 20, 22 extend on both sides, which are smaller in diameter than the collar 18.
  • An the front end 24 of an approach 20 is located an electrical igniter 26 and a pyrotechnic Charge 28 while from the front End 30 of the other approach 22 two electrically with the Ignition element 26 connected pins 32 protrude.
  • the separating element 14 has a cylindrical holding element 34 on that with an axially projecting collar 36 is provided which the igniter 26 and the approach 20 carrying pyrotechnic charge 28 of the Surrounds base element 12 from the outside and on the collar 18th of the base element 12 rests with which it is welded in a punctiform manner is.
  • the encircling collar 36 has several axial projections 38 on the collar 18 of the base member are welded at 16.
  • a separating tool 40 that extends along of the diameter of the holding element 34 extends from protrudes axially.
  • the cutting tool 40 is according to Art a cutting edge and is integral with the Holding element 34 connected.
  • the outer diameter of the encircling collar 36 is approximately equal to the outer diameter of the collar 18 of the base element 12 chosen while its thickness is approximately the same the diameter difference of the collar 18 and the from Wrapping collar 36 enclosed approach 20 of the base element 12 is.
  • a circumferential sealing ring 44 is provided, which in opposite Circumferential recesses 46 and 48 on the outside of the neck 20 and the inside of the collar 36 is arranged.
  • the active element 10 is, for. B. in an electrical Securing element, as described in DE 42 11 079, used.
  • the igniter 26, the pyrotechnic charge 28 and the Base and the separating element 12 or 14 as prefabricated Unit can be installed.
  • FIGS. 3 to 6 shown two more Embodiments of the pyrotechnic active element 10 ' and 10 "correspond largely to their structure pyrotechnic active element 10 according to FIGS. 1 and 2. To this extent, in the FIGS. 3 to 6 the same reference numerals used for identical or functionally identical parts.
  • the difference of the active element 10 'compared to that Active element 10 consists in the type of mechanical connection of the separating element 14 with the base element 12.
  • the Approach 20 of the base element namely in its transition area a circumferential constriction 50 to the collar 18, into which the free end of the collar 36 through plastic deformation plunges into it. This is what happens a mechanical connection with for assembly and the Handling the active element 10 'sufficient strength.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)
  • Fuses (AREA)
  • Actuator (AREA)
  • Automotive Seat Belt Assembly (AREA)
EP98937540A 1997-07-04 1998-06-23 Pyrotechnisches wirkelement Expired - Lifetime EP0993678B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19728658A DE19728658A1 (de) 1997-07-04 1997-07-04 Pyrotechnisches Wirkelement
DE19728658 1997-07-04
PCT/EP1998/003838 WO1999001880A1 (de) 1997-07-04 1998-06-23 Pyrotechnisches wirkelement

Publications (2)

Publication Number Publication Date
EP0993678A1 EP0993678A1 (de) 2000-04-19
EP0993678B1 true EP0993678B1 (de) 2003-03-05

Family

ID=7834687

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98937540A Expired - Lifetime EP0993678B1 (de) 1997-07-04 1998-06-23 Pyrotechnisches wirkelement

Country Status (5)

Country Link
US (1) US6496098B1 (cs)
EP (1) EP0993678B1 (cs)
CZ (1) CZ297976B6 (cs)
DE (2) DE19728658A1 (cs)
WO (1) WO1999001880A1 (cs)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10303377A1 (de) * 2003-01-29 2004-08-05 Dynamit Nobel Ais Gmbh Automotive Ignition Systems Pyromechanisches Trennelement
ATE380328T1 (de) * 2003-02-04 2007-12-15 Delphi Tech Inc Pyromechanisches trennelement
US7498531B2 (en) * 2003-03-12 2009-03-03 Delphi Technologies, Inc. Housing and a conducting rail for disconnecting a battery
DE502004005237D1 (de) * 2003-04-30 2007-11-29 Delphi Tech Inc Gehäuse für eine pyromechanische Trennvorrichtung mit integriertem Anzündelement
US7239225B2 (en) * 2003-10-17 2007-07-03 Special Devices, Inc. Pyrotechnic circuit breaker
US7123124B2 (en) * 2003-10-17 2006-10-17 Special Devices, Inc. Pyrotechnic circuit breaker
DE102005058721A1 (de) 2005-12-08 2007-06-14 Trw Airbag Systems Gmbh Pyrotechnische Aktuatoreinheit sowie Gassackmodul mit einer solchen Akruatoreinheit
DE102010011150B4 (de) * 2010-03-11 2012-03-29 Auto-Kabel Managementgesellschaft Mbh Elektrische Sicherung für Kraftfahrzeugenergieleitungen und Herstellungsverfahren für eine solche Sicherung
FR2957452B1 (fr) * 2010-03-15 2012-08-31 Snpe Materiaux Energetiques Interrupteur electrique a actionnement pyrotechnique
DE102010035684A1 (de) * 2010-08-27 2012-03-01 Auto-Kabel Managementgesellschaft Mbh Elektrische Trennvorrichtung sowie Verfahren zum elektrischen Trennen von Anschlussteilen mit Hilfe einer Trennvorrichtung
DE102012023877A1 (de) * 2012-12-06 2014-06-12 Trw Airbag Systems Gmbh Pyrotechnische aktuatorbaugruppe sowie gassackmodul mit einer solchen aktuatorbaugruppe
DE102013002363B4 (de) * 2013-02-09 2017-03-23 Autoliv Development Ab Gassackeinheit und Halteteil zur Verwendung in einer solchen Gassackeinheit
FR3017240B1 (fr) * 2014-02-04 2016-01-29 Ncs Pyrotechnie Et Tech Sas Coupe-circuit pyrotechnique
EP2995822B1 (en) * 2014-09-09 2019-11-13 Arianegroup Sas Pyrotechnic actuator
DE102015004000A1 (de) * 2015-03-30 2016-10-06 Trw Airbag Systems Gmbh Pyrotechnische Aktuatoreinheit, Gassackmodul mit einer solchen Aktuatoreinheit sowie Verfahren zur Herstellung einer pyrotechnischen Aktuatoreinheit

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1640913A1 (de) * 1967-03-21 1970-11-26 Leiber Dr Carl Otto Verfahren zum Schalten von Stroemen und Schaltelement
GB1307225A (en) * 1969-07-24 1973-02-14 Albright & Wilson Connecting devices
FR2159628A5 (cs) * 1971-11-05 1973-06-22 France Etat
FR2200770A5 (cs) * 1972-06-26 1974-04-19 France Etat
US3859483A (en) * 1973-05-02 1975-01-07 Sealectro Corp Inertia sensing switch with conductive catch rim means for retaining movable contact in closed position
US3915236A (en) * 1974-03-22 1975-10-28 Gerhardt C Stichling Safety device
US4224487A (en) * 1978-02-23 1980-09-23 Simonsen Bent P Fast acting explosive circuit interrupter
US4417519A (en) * 1981-06-04 1983-11-29 Mcdonnell Douglas Corporation Explosive switch
US4527025A (en) * 1983-02-02 1985-07-02 Networks Electronic Corp. Miniature delay switch
DE3701133A1 (de) * 1987-01-16 1988-07-28 Battelle Institut E V Verfahren zum sprengtechnischen trennen von dickwandigen stahlrohren
DE4211079A1 (de) * 1992-04-03 1993-10-07 Dynamit Nobel Ag Verfahren zum Sichern von Stromkreisen, insbesondere von hohen Strömen führenden Stromkreisen gegen Überströme und elektrisches Sicherungselement, insbesondere Hochstromsicherungselement
DE4422177A1 (de) * 1994-06-28 1996-01-04 Dynamit Nobel Ag Pyrotechnisches Hochstromsicherungselement
DE19503809B4 (de) * 1995-02-06 2005-01-20 Bayerische Motoren Werke Ag Sicherungsvorrichtung für eine Stromleitung in Fahrzeugen

Also Published As

Publication number Publication date
DE59807398D1 (de) 2003-04-10
WO1999001880A1 (de) 1999-01-14
CZ442899A3 (cs) 2000-04-12
EP0993678A1 (de) 2000-04-19
US6496098B1 (en) 2002-12-17
CZ297976B6 (cs) 2007-05-09
DE19728658A1 (de) 1999-01-07

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