EP1256774A2 - Pyrotechnische Zündeinrichtung mit integrierter Elekronikbaugruppe - Google Patents
Pyrotechnische Zündeinrichtung mit integrierter Elekronikbaugruppe Download PDFInfo
- Publication number
- EP1256774A2 EP1256774A2 EP02009850A EP02009850A EP1256774A2 EP 1256774 A2 EP1256774 A2 EP 1256774A2 EP 02009850 A EP02009850 A EP 02009850A EP 02009850 A EP02009850 A EP 02009850A EP 1256774 A2 EP1256774 A2 EP 1256774A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- pyrotechnic
- carrier arrangement
- area
- ignition
- ignition device
- 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
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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
- F42B3/121—Initiators with incorporated integrated circuit
Definitions
- the invention relates to a pyrotechnic ignition device according to the preamble of claim 1 with integrated electronics module, in particular for triggering an occupant protection device, with a pyrotechnic active substance, which in There is an active connection with an electrically ignitable ignition bridge.
- Ignition device can be found in DE 198 36 278 C2.
- the ignition bridge is there arranged on a carrier arrangement together with an electronic assembly, the entire carrier arrangement in the primer with the pyrotechnic Active mass arranged and to protect the carrier assembly and Electronic assembly partly with a shock-absorbing, elastic material is covered. The shock absorbing material releases the ignition bridge to the To enable active connection to the pyrotechnic active mass.
- a pyrotechnic ignition device which by a Protective wall structurally in a pyrotechnic area with the pyrotechnic active mass and the ignition bridge as well as an electronics area with the electronics module is separated.
- To the electronics module in the electronics area with the To connect the ignition bridge in the pyrotechnics area are separate contact elements in the protective wall is provided, which are contacted on both sides of the protective wall have to.
- Simpler carrier arrangements for example printed circuit boards, as carriers for the entire Ignition device including ignition bridge and electronic assembly, as they are e.g. can also be found in EP 0 555 651 B1, are cheaper, but offer not a comparable good protection for the electronic assembly against impacts of pressure, temperature or forces during the triggering of the ignition device.
- the igniter is common with the electronics assembly via a data bus with a central unit and other ignition devices connected, for example in an ignition bus for occupant protection devices and should remain functional to a limited extent even after the ignition, at least however do not interfere with the data exchange on the bus.
- Pyrotechnic ignition device with integrated electronics module for example also from DE 199 40 201 C1, DE 196 10 799 C1, WO 97/21067, DE 198 36 278 and DE 196 53 115 A1 are known.
- the object of the invention is therefore a simple to produce ignition device to specify, at which it is ensured that the electronics module also after the triggering of the ignition device still remains functional. This task will solved by the features of claim 1. Advantageous further developments are See subclaims.
- the basic idea here is on the structural separation of the electronics area and Pyrotechnics not to be missed and still a simple carrier arrangement for both the electronics module in the electronics area and the ignition bridge in the To use pyrotechnics, but this separation by wrapping the To achieve carrier arrangement with different hard material, that is Covering the pyrotechnics area with a shock absorbing material, meanwhile the electronics area is encased by a material that is harder than that, for example.
- the carrier arrangement preferably has inside a housing in the Pyrotechnics a full encapsulation with the shock-absorbing material, so one complete wrapping up to the side walls of the case, being of course the ignition bridge is excluded. Likewise is the electronics area up to the side walls of the housing with a full encapsulation from the provided harder material.
- the carrier arrangement additionally preferably has separation points for separating the Pyrotechnics from the rest of the carrier assembly, so that of the shock-absorbing covering non-absorbable forces at least not over the Carrier arrangement are passed on to the electronic assembly.
- the separation points and / or the casing the carrier arrangement in the pyrotechnics area that dimensioned so that it only at Exceeding a predetermined thermal and / or mechanical Limit load in the pyrotechnics area or on the carrier arrangement during the If the pyrotechnic active composition burns, separate the carrier arrangement.
- Figure 1 shows a sectional view through a particularly preferred Design of the ignition device as used as an igniter for a gas generator Occupant protection device, for example an airbag, used in a motor vehicle shall be.
- the ignition device consists of an ignition bridge 1, a pyrotechnic Active mass 3, a carrier arrangement 2 for the ignition bridge 1 on the one hand and Electronics assembly 6a-6c, on the other hand, and housing parts 7a and 7b.
- the ignition device is in a pyrotechnic area A and an electronics area B. subdivided, the pyrotechnic active mass 3, the Ignition bridge 1 and part 2a of the carrier arrangement 2 are arranged.
- the ignition bridge 1 is preferably not directly on the carrier arrangement 2, but arranged a separate carrier body 11, the object of a simultaneous application filed by the applicant and on the advantages and structure of which are referred to.
- carrier arrangement 2 for the special design of the Ignition device with the two different sheaths 4 and 5 of the This is carrier arrangement 2 in pyrotechnics area A and in electronics area B. however irrelevant.
- the carrier arrangement 2 is also at least partially in the pyrotechnic region A. encased in a pressure-absorbing material 4.
- This pressure absorbing Material 4 for example a soft globe top, protects with its certain plastic or elastic deformability of both part 2a located in pyrotechnics area A. the carrier arrangement 2.
- pyrotechnics area A is also separated from electronics area B, by the electronics area B with a covering 5 made of pressure and heat resistant Material is provided, which is harder than that previously for printing and Shock absorption in the pyrotechnics area A used envelope 4, so that there is a two-part sheathing of the carrier arrangement subdivided into pyrotechnic area A and electronics area B results without the need for a separate partition.
- the Wrapping is preferably carried out in a full encapsulation up to the side walls of the Housing 7a.
- the electronics area B of the carrier arrangement 2 is also preferred spaced from the pyrotechnic active mass 3, in particular in such a way that the carrier arrangement 2 has an elongated shape, at the other the ignition bridge 1 is arranged at one end (2a) and only at this end with the pyrotechnic active mass 3 is operatively connected and the electronics area B spaced on the part 2b of the carrier arrangement 2 facing away from this end is arranged.
- the carrier arrangement 2 is thus initially starting from the pyrotechnic active mass 3, initially from a softer one shock and pressure absorbing material 4, for example soft globe top, up to wall 7a completely encased and following a predetermined limit on that in contrast, harder and thus more pressure-resistant and preferably also more heat-resistant Material 5 changed, which causes the electronics module 6a-c in this area extremely effective from the influences during ignition or combustion the pyrotechnic active mass is protected.
- a softer one shock and pressure absorbing material 4 for example soft globe top
- This ignition device consists of a carrier arrangement 2 with two increasingly harder wrappings along their length in A housing 7a is also extremely compact, robust and at the same time simple to produce, since appropriate Umg discern- or overmolding techniques and materials be available.
- the housing is simply a base 7b closed and thus forms a to the electronics module 6a to 6c and Floor base 7b pressure-resistant unit.
- the carrier arrangement 2 has a particularly preferred one shown here Training as a specialty additionally at least one separation point 23 for Separation of part 2a of the carrier arrangement 2 located in the pyrotechnics area from the rest of the carrier arrangement 2b after the ignition of the pyrotechnic Active mass 3, the separation points 23 preferably being dimensioned in such a way that they only exceed a specified thermal and / or mechanical limit load during pyrotechnic combustion Active mass 3 separate the carrier arrangement 2.
- the separation can also be the remaining and interrupted Line ends are detected on the carrier arrangement 2.
- the separation ensures for the fact that no or at least no forces exceeding the limit load passed on to the electronic assembly 6a - 6c via the carrier arrangement 2 become.
- the carrier arrangement 2 can for example be made of ceramic material with appropriate metallic deposits of interconnect structures and contact zones be designed and the separation point 23 is formed there as a predetermined breaking point become.
- the electronic assembly 6a to 6c consists of electronic components for Control 6a of the ignition device via an energy and data bus with which the Ignition device is connected via the contacts 8, a protection circuit 6c against Faults on the data bus and an ignition energy store, in particular an ignition capacitor 6b and possibly further components.
- critical is that the electronics module even after the separation of the pyrotechnic part 2a of the carrier arrangement with the ignition bridge 1 still its other functions, in particular self-diagnosis and data bus communication can continue to perform, but at least the data exchange does not hinder the bus system.
- the carrier arrangement 2 can also consist of two separate parts 2a and 2b, which, for example, by a solder connection before the ignition of the pyrotechnic Active mass 3 are connected and which due to the development of heat during Burns melt away.
- the solder joint (s) as an alternative embodiment of the The separation point (s) 23 must be dimensioned so that they are both mechanical as well as thermal requirements in motor vehicle operation and also that Ignition current can lead to the ignition bridge 1 without melting.
- the Burning of the pyrotechnic active mass 3 released amount of heat clearly above these loads, the plumbing can with certainty dimensions are melted, especially since a melting of the solder joint is sufficient to achieve the Forwarding of forces from pyrotechnics area A to electronics area B to prevent the carrier assembly 2.
- the pressure-absorbing material of the casing 4 in the pyrotechnic area A for example. a soft globe top protects with its certain plastic or elastic Deformability of both part 2a of the area located in pyrotechnics Carrier assembly 2 and the envelope 5, the pressure resistance therefore dimensioned smaller or the overall security can be further increased.
- This pressure-absorbing material 4 is preferably elastic to the extent that at least when the limit load on the pyrotechnic part 2a is exceeded the carrier arrangement 2, the separation points are severed.
- the length of part 2a of the carrier arrangement 2 in the pyrotechnic area A is shorter than the length of that part 2b of the carrier arrangement 2 in the electronics area B, which improves leverage.
- the separation points 23 are preferably on the carrier arrangement 2 in the transition area between pyrotechnics area A and that of the casing 5 enclosed area of the carrier arrangement 2 is arranged.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Engineering & Computer Science (AREA)
- Air Bags (AREA)
Abstract
Description
- Figur 1
- Schnittdarstellung durch eine besonders bevorzugte Ausgestaltung der Zündeinrichtung
Claims (8)
- Pyrotechnische Zündeinrichtung mit integrierter Elektronikbaugruppe,a) mit einer pyrotechnischen Wirkmasse (3),b) die in Wirkverbindung mit einer elektrisch zündbaren Zündbrücke (1) steht,c) die auf einer Trägeranordnung (2) zusammen mit einer Elektronikbaugruppe (6a -6c) angeordnet ist, wobei die Trägeranordnung (2) teilweise mit einem stoßdämpfenden, elastischen Material (4) überzogen ist, wobei das stoßdämpfende Material vorzugsweise die Zündbrücke (1) freiläßt,
dadurch gekennzeichnet, daßd) Zündeinrichtung in einen Pyrotechnikbereich (A) mit der Zündbrücke (1) und einen Elektronikbereich (B) mit der Elektronikbaugruppe (6a - 6c) unterteilt ist, indeme) die Trägeranordnung (2) im Elektronikbereich (B) von einem gegenüber dem stoßdämpfenden Material (4) im Pyrotechnikbereich (A) härteren Material (5) umhüllt ist. - Pyrotechnische Zündeinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Trägeranordnung innerhalb eines Gehäuses (7a) im Pyrotechnikbereich (A) ausgenommen der Zündbrücke (1) einen Vollverguß mit dem stoßdämpfenden Material (4) und im Elektronikbereich (B) einen Vollverguß aus dem härteren Material (5) aufweist.
- Pyrotechnische Zündeinrichtung nach Anspruch 2, dadurch gekennzeichnet, dassa) die Trägeranordnung (2) eine längliche Form aufweist,b) an deren einem Ende (2a) die Zündbrücke (1) angeordnet ist, welches den Pyrotechnikbereich (A) bildet und nur mit diesem Ende mit der pyrotechnischen Wirkmasse (3) in Wirkverbindung steht undc) der Elektronikbereich (B) beabstandet auf dem von diesem Ende abgewandten Teil (2b) der Trägeranordnung (2) angeordnet ist.
- Pyrotechnische Zündeinrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Trägeranordnung (2) zumindest eine Trennstelle (23) zur Abtrennung des im Pyrotechnikbereich (A) befindlichen Teils (2a) der Trägeranordnung (2) von der restlichen Trägeranordnung (2b) nach der Zündung der pyrotechnischen Wirkmasse (3) aufweist.
- Pyrotechnische Zündeinrichtung nach Anspruch 4, dadurch gekennzeichnet, dass die Trennstellen (23) als Sollbruchstellen ausgeführt sind.
- Pyrotechnische Zündeinrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die Länge des Pyrotechnikbereichs der Trägeranordnung kürzer ist als die Länge des Elektronikbereichs der Trägeranordnung.
- Pyrotechnische Zündeinrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß die Trennstellen und/oder die Umhüllung der Trägeranordnung im Pyrotechnikbereich so dimensioniert sind, dass sie nur bei Überschreitung einer vorgegebenen thermischen und/oder mechanischen Grenzbelastung während des Abbrands der pyrotechnischen Wirkmasse die Trägeranordnung trennen.
- Verwendung einer pyrotechnischen Zündeinrichtung nach einem der vorangehenden Ansprüche für das Zünden von Insassenschutzeinrichtungen in einem Insassenschutzsystem, wobei die Insassenschutzeinrichtungen über einen Datenbus untereinander bzw. mit einer Zentraleinheit zum Datenaustausch verbunden sind und eine in die Elektronikbaumgruppe integrierte Kommunikationsschaltung zum Datenaustausch aufweisen, welche auch nach dem Zünden der Zündeinrichtung noch funktionsfähig ist.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10123284A DE10123284A1 (de) | 2001-05-12 | 2001-05-12 | Pyrotechnische Zündeinrichtung mit integrierter Elektronikbaugruppe |
| DE10123284 | 2001-05-12 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1256774A2 true EP1256774A2 (de) | 2002-11-13 |
| EP1256774A3 EP1256774A3 (de) | 2003-01-02 |
| EP1256774B1 EP1256774B1 (de) | 2006-05-31 |
Family
ID=7684653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02009850A Expired - Lifetime EP1256774B1 (de) | 2001-05-12 | 2002-05-02 | Pyrotechnische Zündeinrichtung mit integrierter Elekronikbaugruppe |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US6644197B2 (de) |
| EP (1) | EP1256774B1 (de) |
| DE (2) | DE10123284A1 (de) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013090948A1 (en) * | 2011-12-14 | 2013-06-20 | Detnet South Africa (Pty) Ltd | Detonator |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3803636B2 (ja) * | 2002-12-26 | 2006-08-02 | 本田技研工業株式会社 | バス接続用点火装置 |
| JP3917127B2 (ja) * | 2003-12-08 | 2007-05-23 | 本田技研工業株式会社 | 着火装置 |
| EP1548390A1 (de) * | 2003-12-23 | 2005-06-29 | Hirtenberger Automotive Safety GmbH | Zünder für pyrotechnische Ladungen |
| DE102004004668A1 (de) * | 2004-01-30 | 2005-08-25 | Dynitec Gmbh | Zünd- und Anzündelemente |
| US7690303B2 (en) | 2004-04-22 | 2010-04-06 | Reynolds Systems, Inc. | Plastic encapsulated energetic material initiation device |
| US8485097B1 (en) | 2010-06-11 | 2013-07-16 | Reynolds Systems, Inc. | Energetic material initiation device |
| JP6765873B2 (ja) * | 2016-06-29 | 2020-10-07 | 株式会社ダイセル | 電気回路遮断装置 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0555651A1 (de) | 1987-02-16 | 1993-08-18 | Nitro Nobel Ab | Zünder |
| WO1997021067A1 (en) | 1995-12-06 | 1997-06-12 | Orica Trading Pty Ltd | Electronic explosives initiating device |
| DE19610799C1 (de) | 1996-03-19 | 1997-09-04 | Siemens Ag | Zündeinrichtung zum Auslösen eines Rückhaltemittels in einem Kraftfahrzeug |
| DE19653115A1 (de) | 1996-12-19 | 1998-06-25 | Autoliv Dev | Zündeinheit für eine Fahrzeug-Sicherheitsvorrichtung |
| DE19836278A1 (de) | 1998-08-11 | 2000-03-30 | Dynamit Nobel Ag | Extern ansteuerbare Anzündeinheit mit integrierter Elektronik zum Auslösen eines Rückhaltesystems |
| DE19836280C1 (de) | 1998-08-11 | 2000-05-11 | Telefunken Microelectron | Pyrotechnisches Anzündelement mit integrierter Elektronik, zum Auslösen eines Rückhaltesystems |
| DE19940201C1 (de) | 1999-08-25 | 2001-01-11 | Daimler Chrysler Ag | Pyrotechnisches Zündsystem mit integrierter Zündschaltung |
Family Cites Families (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3229632A (en) * | 1964-02-10 | 1966-01-18 | Vance F Boswell | Ejector breech and firing system |
| DE4002088C1 (de) | 1990-01-25 | 1990-08-23 | Bayern-Chemie Gesellschaft Fuer Flugchemische Antriebe Mbh, 8261 Aschau, De | |
| ZA946555B (en) | 1993-05-28 | 1995-06-12 | Altech Ind Pty Ltd | An electric igniter |
| DE4435319A1 (de) | 1994-10-01 | 1996-04-04 | Temic Bayern Chem Airbag Gmbh | Anzündeinheit für einen Gasgenerator eines passiven Rückhaltesystems |
| 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 |
| EP0843807B1 (de) | 1995-07-26 | 1999-09-22 | Asahi Kasei Kogyo Kabushiki Kaisha | Elektronischer verzögerungszünder |
| US6079332A (en) * | 1996-11-01 | 2000-06-27 | The Ensign-Bickford Company | Shock-resistant electronic circuit assembly |
| US5929368A (en) | 1996-12-09 | 1999-07-27 | The Ensign-Bickford Company | Hybrid electronic detonator delay circuit assembly |
| US5889228A (en) | 1997-04-09 | 1999-03-30 | The Ensign-Bickford Company | Detonator with loosely packed ignition charge and method of assembly |
| DE29709390U1 (de) * | 1997-05-28 | 1997-09-25 | Trw Occupant Restraint Systems Gmbh, 73551 Alfdorf | Zünder für einen pyrotechnischen Gasgenerator und Gasgenerator |
| DE19805539A1 (de) | 1998-02-11 | 1999-08-12 | Lell Peter Dipl Ing Dr | Alternative Anzündverfahren für pyrotechnische Baugruppen |
| AU2285900A (en) * | 1999-01-08 | 2000-07-24 | Dynamit Nobel Gmbh Explosivstoff- Und Systemtechnik | Control module for triggering units for initiating pyrotechnical elements |
| US6166452A (en) | 1999-01-20 | 2000-12-26 | Breed Automotive Technology, Inc. | Igniter |
| FR2790077B1 (fr) | 1999-02-18 | 2001-12-28 | Livbag Snc | Allumeur electro-pyrotechnique a electronique integree |
| DE19951720B4 (de) * | 1999-06-25 | 2007-06-06 | Delphi Technologies, Inc., Troy | Anzündeinheit mit integrierter Elektronik |
| DE19930904B4 (de) * | 1999-07-06 | 2005-12-29 | Orica Explosives Technology Pty. Ltd., Melbourne | Elektronische Auslöseeinheit zur Initiierung von pyrotechnischen Elementen |
| DE19940200A1 (de) | 1999-08-25 | 2001-04-05 | Daimler Chrysler Ag | Pyrotechnisches Zündsystem mit integrierter Zündschaltung |
| US6324979B1 (en) | 1999-12-20 | 2001-12-04 | Vishay Intertechnology, Inc. | Electro-pyrotechnic initiator |
| FR2804503B1 (fr) * | 2000-02-02 | 2002-11-22 | Delta Caps Internat Dci | Module d'allumage de detonateur pour charge explosive. procede et outillage de fabrication d'un detonateur equipe d'un tel module |
| FR2809806B1 (fr) | 2000-05-30 | 2003-01-10 | Livbag Snc | Initiateur electro-pyrotechnique a pont en couche mince et a tres basse energie de fonctionnement |
-
2001
- 2001-05-12 DE DE10123284A patent/DE10123284A1/de not_active Withdrawn
-
2002
- 2002-05-02 DE DE50206962T patent/DE50206962D1/de not_active Expired - Fee Related
- 2002-05-02 EP EP02009850A patent/EP1256774B1/de not_active Expired - Lifetime
- 2002-05-13 US US10/145,399 patent/US6644197B2/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0555651A1 (de) | 1987-02-16 | 1993-08-18 | Nitro Nobel Ab | Zünder |
| WO1997021067A1 (en) | 1995-12-06 | 1997-06-12 | Orica Trading Pty Ltd | Electronic explosives initiating device |
| DE19610799C1 (de) | 1996-03-19 | 1997-09-04 | Siemens Ag | Zündeinrichtung zum Auslösen eines Rückhaltemittels in einem Kraftfahrzeug |
| DE19653115A1 (de) | 1996-12-19 | 1998-06-25 | Autoliv Dev | Zündeinheit für eine Fahrzeug-Sicherheitsvorrichtung |
| DE19836278A1 (de) | 1998-08-11 | 2000-03-30 | Dynamit Nobel Ag | Extern ansteuerbare Anzündeinheit mit integrierter Elektronik zum Auslösen eines Rückhaltesystems |
| DE19836280C1 (de) | 1998-08-11 | 2000-05-11 | Telefunken Microelectron | Pyrotechnisches Anzündelement mit integrierter Elektronik, zum Auslösen eines Rückhaltesystems |
| DE19940201C1 (de) | 1999-08-25 | 2001-01-11 | Daimler Chrysler Ag | Pyrotechnisches Zündsystem mit integrierter Zündschaltung |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013090948A1 (en) * | 2011-12-14 | 2013-06-20 | Detnet South Africa (Pty) Ltd | Detonator |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10123284A1 (de) | 2002-11-14 |
| US6644197B2 (en) | 2003-11-11 |
| DE50206962D1 (de) | 2006-07-06 |
| EP1256774A3 (de) | 2003-01-02 |
| EP1256774B1 (de) | 2006-05-31 |
| US20020166473A1 (en) | 2002-11-14 |
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