WO2001001061A1 - Dispositif d'amorçage avec electronique integree - Google Patents

Dispositif d'amorçage avec electronique integree Download PDF

Info

Publication number
WO2001001061A1
WO2001001061A1 PCT/EP2000/004952 EP0004952W WO0101061A1 WO 2001001061 A1 WO2001001061 A1 WO 2001001061A1 EP 0004952 W EP0004952 W EP 0004952W WO 0101061 A1 WO0101061 A1 WO 0101061A1
Authority
WO
WIPO (PCT)
Prior art keywords
ignition
ignition unit
unit according
metal ring
electronic components
Prior art date
Application number
PCT/EP2000/004952
Other languages
German (de)
English (en)
Inventor
Thomas Lehnst
Uwe Brede
Anton Bretfeld
Gerhard Kordel
Hans-Joachim Nitschke
Original Assignee
Dynamit Nobel Gmbh Explosivstoff- Und Systemtechnik
Volkswagen 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
Priority claimed from DE19951720A external-priority patent/DE19951720B4/de
Application filed by Dynamit Nobel Gmbh Explosivstoff- Und Systemtechnik, Volkswagen Ag filed Critical Dynamit Nobel Gmbh Explosivstoff- Und Systemtechnik
Publication of WO2001001061A1 publication Critical patent/WO2001001061A1/fr

Links

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
    • F42B3/121—Initiators with incorporated integrated circuit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
    • B60R2021/01006—Mounting of electrical components in vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
    • B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
    • B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
    • B60R21/26—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by the inflation fluid source or means to control inflation fluid flow
    • B60R2021/26029—Ignitors

Definitions

  • the invention relates to an ignition unit for triggering a restraint in a motor vehicle with a pyrotechnic active part, consisting of an ignition bridge element and a pyrotechnic set, a receiving part for electronic components, such as control and signal processing elements, and connecting pins for controlling the electronic components.
  • an ignition device for triggering a restraint in a motor vehicle with an ignition circuit is known.
  • the ignition circuit with the electronic components, such as control and signal processing elements, are located on a three-dimensional carrier. Ignition pins protrude from this carrier on the one hand, which are connected via an ignition wire as the ignition bridge element and pins for the connection of a plug.
  • a pyrotechnic active part is placed on the three-dimensional carrier.
  • a disadvantage of this ignition unit is the lack of tightness, at least for the active part with its pyrotechnic components. In addition, this igniter is difficult to manufacture.
  • the invention has for its object to improve an ignition unit according to the preamble of claim 1 with respect to the tightness and to simplify the manufacture.
  • the receiving part is a ceramic board
  • the ignition bridge element is a ignition bridge resistor arranged on the ceramic circuit board
  • the ceramic circuit board protrudes through a metal ring via a seal and, seen from the metal ring, has an active side and a control side,
  • the active side is completely enclosed by a metal sleeve which is connected gas-tight to the metal ring.
  • the area in which the pyrotechnics are located is hermetically sealed.
  • Ignition unit can be controlled from the outside
  • the ignition bridge resistor is a thin film by z. B. sputtering technology applied to the ceramic circuit board at the end of the rule - -
  • Ceramic board on one of the broad sides may also be advantageous to arrange the ignition bridge resistor on the end face of the ceramic board.
  • the seal expediently consists of a melted glass.
  • any other suitable seal can also be used.
  • the metal ring is made of steel and the metal sleeve is made of stainless steel, the metal sleeve advantageously being laser-welded to the metal ring.
  • the pins are conveniently attached directly to the ceramic board.
  • the interior of the metal sleeve is filled with a plastic sheathing or extrusion coating which leaves the area around the ignition bridge resistor free and contains a loading bore for receiving the pyrotechnic set.
  • control side is advantageously completely provided with a plastic encapsulation or covering.
  • two firing bridge resistors are arranged on the ceramic circuit board to generate redundancy, e.g. B. on each broadside an ignition bridge resistor.
  • Fig. 2 a schematic view of the metal ring with inserted ceramic board with the ignition bridge resistor, the electronic components and the connecting pins, and
  • FIG. 1 shows in section an ignition unit according to the invention for triggering a restraint, in particular an airbag, in a motor vehicle.
  • the ignition unit consists of a ceramic circuit board 1 made of aluminum oxide on which electronic components 3 and an ignition bridge resistor 4 are arranged. These are connected to each other via conductor tracks.
  • the ceramic circuit board 1 is embedded in a metal ring 6 or extends through it. The tightness is achieved via a seal 5 between the metal ring 6 and the ceramic circuit board 1.
  • the metal ring 6 separates the ceramic circuit board 1 into an active side 12 and a control side 13.
  • the electronic components 3 and connecting pins 7 are arranged on the control side 13 of the ceramic circuit board 1.
  • Ignition bridge resistor 4 components 3 and connecting pins 7 are connected to one another by corresponding electrical conductor tracks, conductor tracks also leading from the ignition bridge resistor 4 through the seal 5 to the components 3.
  • the metal ring 6 is made of steel.
  • a suitable plastic sheathing / encapsulation 8a, 8b in such a way that the area in which the ignition bridge resistor 4 is located remains free, a loading hole is created which serves to accommodate a pyrotechnic set 9. This is in thermal contact with the ignition bridge resistor 4.
  • a metal sleeve 10 preferably made of stainless steel, which is laser welded 11 to the steel ring 6 all around, the active side 12, in which the pyrotechnic set 9 is located, is hermetically sealed.
  • the encapsulation / sheathing 8a, 8b is designed so that in addition the area of the ceramic circuit board 1 on which the electronic components 3 are located, i. H. the control side 13 is covered with.
  • this sheathing / encapsulation 8b is generally a customer-specific design and at the same time serves as protection for the connecting pins 7. This defines the final form of the ignition.
  • the complete ignition unit can be electrically controlled on the input side via the connecting pins 7 leading to the outside.
  • the pyrotechnic set 9 is used for intended control signals that are applied to the pins 7 for the purpose of igniting z.
  • airbag systems activated via the ignition bridge resistor 4. Thereupon the predetermined breaking point 14 bursts and the firing vapors reach their intended use.
  • FIG. 2 shows a schematic view of the metal ring 6 with the ceramic board 1 inserted.
  • the ignition bridge resistor 4 is arranged in addition to the conductor tracks 2.
  • the electronic components 3 are accommodated on the control side 13 of the ceramic circuit board 1. These are used for control and signal processing. Terminal pins 7, which are tightly attached to the ceramic circuit board 1, are connected to the conductor tracks 2 and are used for control from the outside.
  • FIG. 3 Another arrangement of the ignition bridge resistor 4 is shown in FIG. 3.
  • the ignition bridge resistor 4 is here in contrast to that in FIGS. 1 and 2 shown embodiment on the front side of the ceramic board 1 and is connected via conductor tracks 2 to the electronic components 3 (see FIG. 2).

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • General Engineering & Computer Science (AREA)
  • Air Bags (AREA)

Abstract

L'invention concerne un dispositif d'amorçage destiné à déclencher un moyen de retenue dans un véhicule par l'intermédiaire d'un élément actif pyrotechnique. Ledit dispositif est constitué d'un pont d'amorçage comportant une charge pyrotechnique (9), d'une partie réceptrice destinée aux composants électroniques (3) tels que les éléments de commande et de traitement du signal, et de broches de raccordement (7) destinées à exciter les composants électroniques (3). L'invention vise à améliorer l'étanchéité et à simplifier la fabrication, pour ce faire, la partie réceptrice est une platine céramique (1), le pont d'amorçage est une résistance de pont d'amorçage (4) disposée sur la platine céramique (1), la platine céramique (1) traverse un anneau métallique (6) au moyen d'un joint (5) et présente un côté actif (12) et un côté de commande (13) vue depuis l'anneau métallique, le côté actif (12) ne comporte quasiment que la résistance de pont d'amorçage (4) et le côté de commande (13) comporte les composants électroniques (3) et les broches de raccordement (7), et une enveloppe métallique (10) renferme entièrement le côté actif (12) et est reliée à l'anneau métallique (6) de manière étanche aux gaz.
PCT/EP2000/004952 1999-06-25 2000-05-31 Dispositif d'amorçage avec electronique integree WO2001001061A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19929372.4 1999-06-25
DE19929372 1999-06-25
DE19951720.7 1999-10-27
DE19951720A DE19951720B4 (de) 1999-06-25 1999-10-27 Anzündeinheit mit integrierter Elektronik

Publications (1)

Publication Number Publication Date
WO2001001061A1 true WO2001001061A1 (fr) 2001-01-04

Family

ID=26053942

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2000/004952 WO2001001061A1 (fr) 1999-06-25 2000-05-31 Dispositif d'amorçage avec electronique integree

Country Status (1)

Country Link
WO (1) WO2001001061A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0279796A1 (fr) * 1987-02-16 1988-08-24 Nitro Nobel Ab Charge de détonateur
DE19610799C1 (de) 1996-03-19 1997-09-04 Siemens Ag Zündeinrichtung zum Auslösen eines Rückhaltemittels in einem Kraftfahrzeug
EP0802092A1 (fr) * 1996-04-15 1997-10-22 Morton International, Inc. Initiateur résistant à haute pression protégé contre les décharges électrostatiques par un varistor à oxyde de métal intégral
WO1998045663A1 (fr) * 1997-04-09 1998-10-15 The Ensign-Bickford Company Initiateur a charge d'amorce faiblement compacte et procede d'assemblage
WO2000009366A1 (fr) * 1998-08-11 2000-02-24 Dynamit Nobel Gmbh Explosivstoff- Und Systemtechnik Dispositif d'amorçage pyrotechnique a dispositif electronique integre, permettant de declencher un systeme de retenue

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0279796A1 (fr) * 1987-02-16 1988-08-24 Nitro Nobel Ab Charge de détonateur
DE19610799C1 (de) 1996-03-19 1997-09-04 Siemens Ag Zündeinrichtung zum Auslösen eines Rückhaltemittels in einem Kraftfahrzeug
EP0802092A1 (fr) * 1996-04-15 1997-10-22 Morton International, Inc. Initiateur résistant à haute pression protégé contre les décharges électrostatiques par un varistor à oxyde de métal intégral
WO1998045663A1 (fr) * 1997-04-09 1998-10-15 The Ensign-Bickford Company Initiateur a charge d'amorce faiblement compacte et procede d'assemblage
WO2000009366A1 (fr) * 1998-08-11 2000-02-24 Dynamit Nobel Gmbh Explosivstoff- Und Systemtechnik Dispositif d'amorçage pyrotechnique a dispositif electronique integre, permettant de declencher un systeme de retenue

Similar Documents

Publication Publication Date Title
DE19610799C1 (de) Zündeinrichtung zum Auslösen eines Rückhaltemittels in einem Kraftfahrzeug
DE60000668T2 (de) Elektrischer, pyrotechnischer Zünder mit integrierter Elektronik
DE69614984T2 (de) Zünder für Aufblasvorrichtung mit Zenerdiode zum Schutz von elektrostatischen Entladungen
DE60124374T2 (de) Zünderkonstruktion mit Aktivierungsschaltung
EP2012082B1 (fr) Socle en métal/matériau de fixation pour dispositifs d'amorçage d'airbags ou dispositifs de protection de personnes analogues, en particulier pour véhicules à moteur et dispositif d'amorçage doté d'un tel socle
EP0022146B1 (fr) Circuit pour enregistrer le déclenchement erroné d'au moins une installation de sécurité servant à la protection des occupants d'un véhicule lors d'un accident
DE69603082T2 (de) Pyrotechnischer elektrischer anzünder und eine einen solchen anzünder enthaltende sicherheitsvorrichtung für ein auto
DE10049071A1 (de) Sicherungsvorrichtung für einen Stromkreis insbesondere in Kraftfahrzeugen
EP0925480A1 (fr) Element d'amorcage/allumage avec un cavalier d'allumage installe sur une puce electronique
DE69317404T2 (de) Brückenzünder mit gedruckten Leiterplatten für Airbag-Aufblasgeräte
DE69807833T2 (de) Elektro-pyrotechnischer Initialzünder mit drei elektrischen Verbindungen
EP3622548B1 (fr) Disjoncteur pyrotechnique et réseau d'alimentation équipé d'un disjoncteur pyrotechnique
EP1078825B1 (fr) Système d'allumage pyrotechnique avec circuit de déclenchement intégré
DE19951720B4 (de) Anzündeinheit mit integrierter Elektronik
DE3812958A1 (de) Elektrisches anzuendmittel
DE19836280C1 (de) Pyrotechnisches Anzündelement mit integrierter Elektronik, zum Auslösen eines Rückhaltesystems
WO2001001061A1 (fr) Dispositif d'amorçage avec electronique integree
EP1256774B1 (fr) Allumeur pyrotechnique comportant un circuit électronique incorporé
WO1999032846A1 (fr) Configuraiton de circuit integre destinee au chauffage d'un materiau d'amorçage et utilisation d'une telle configuration de circuit integre
CH643056A5 (de) Elektrische zuendvorrichtung.
EP0119458A2 (fr) Allumeur électrique
DE102012004966B3 (de) Zündsockel für pyroelektrische Zündvorrichtungen
EP0313911A2 (fr) Pillule d'amorçage
DE102020118100A1 (de) Sicherungselement
WO1998009486A1 (fr) Dispositif pourvu d'un circuit electrique pour commander les moyens de retenue dans un vehicule

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): CZ JP MX US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE

121 Ep: the epo has been informed by wipo that ep was designated in this application
DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: JP