DE202004011078U1 - Gas generator for motor vehicle occupant restraint has prefitted igniter surrounded by gas generator wall and with elastic sealing ring - Google Patents
Gas generator for motor vehicle occupant restraint has prefitted igniter surrounded by gas generator wall and with elastic sealing ring Download PDFInfo
- Publication number
- DE202004011078U1 DE202004011078U1 DE200420011078 DE202004011078U DE202004011078U1 DE 202004011078 U1 DE202004011078 U1 DE 202004011078U1 DE 200420011078 DE200420011078 DE 200420011078 DE 202004011078 U DE202004011078 U DE 202004011078U DE 202004011078 U1 DE202004011078 U1 DE 202004011078U1
- Authority
- DE
- Germany
- Prior art keywords
- gas generator
- wall
- sealing ring
- lighter
- generator
- 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
Links
Classifications
-
- 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
- B60R21/264—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 using instantaneous generation of gas, e.g. pyrotechnic
- B60R21/2644—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 using instantaneous generation of gas, e.g. pyrotechnic using only solid reacting substances, e.g. pellets, powder
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Bags (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Abstract
Description
Die Erfindung betrifft einen Gasgenerator, insbesondere für ein Fahrzeuginsassen-Rückhaltesystem, mit einem eine vormontierte Einheit bildenden Anzünder, einer den Anzünder umgebenden Generatorwand, wobei der Anzünder einen einer Brennkammer nahen vorderseitigen Abschnitt und einen mit elektrischen Anschlüssen versehenen Sockel hat.The The invention relates to a gas generator, in particular for a vehicle occupant restraint system, with a lighter forming a pre-assembled unit, one the lighter surrounding generator wall, the lighter one of a combustion chamber near the front section and one with electrical connections Has base.
Der Anzünder ist eine separat gefertigte, in sich geschlossene und funktional eigenständige Einheit, die an den pyrotechnischen Treibsatz in der Brennkammer angrenzt. Ein üblicherweise am Sockel vorgesehener Dichtring soll verhindern, daß das entstehende Druckgas nach Zünden der Treibladung seitlich an dem Anzünder vorbei aus dem Generator austritt.The lighter is a separately manufactured, self-contained and functional independent Unit connected to the pyrotechnic propellant in the combustion chamber borders. A usually sealing ring provided on the base should prevent the resulting Compressed gas after ignition the propellant charge emerges from the generator past the igniter.
Für die Dichtigkeit ist es in diesem Zusammenhang auch wichtig, daß der Anzünder insgesamt relativ exakt zu der Generatorwand positioniert ist.For tightness it is also important in this context that the lighter overall is relatively accurate is positioned to the generator wall.
Aufgabe der Erfindung ist es, den Anzünder im Gasgenerator mit einfachen Mitteln exakt zu positionieren und die Herstellung des Gasgenerators insgesamt zu erleichtern.task the invention is the lighter in To position the gas generator with simple means and that To facilitate the manufacture of the gas generator overall.
Dies wird bei einem Gasgenerator der eingangs genannten Art dadurch erreicht, daß am vorderseitigen Abschnitt ein vorderer, elastischer Dichtring vorgesehen ist, der unmittelbar an dem Anzünder und unmittelbar an der Gasgeneratorwand anliegt und zwischen ihnen geklemmt ist. Der elastische Dichtring am vorderseitigen Abschnitt ist ein einstückiges Teil, welches den Anzünder im Bereich des vorderseitigen Abschnitts allein und unmittelbar zur Generatorwand positioniert. Anderweitige Teile wie Kunststoffhülsen oder dergleichen, die zudem in sehr engen Toleranzen relativ zur Generatorwand gefertigt werden müssen, sind nicht erforderlich.This is achieved in a gas generator of the type mentioned in the introduction that on front section provided a front, elastic sealing ring is that directly at the lighter and lies directly against the gas generator wall and between them is clamped. The elastic sealing ring on the front section is a one piece Part which is the lighter alone and directly in the area of the front section positioned to the generator wall. Other parts such as plastic sleeves or the like, which also in very tight tolerances relative to the generator wall have to be manufactured are not required.
Der vordere Dichtring kann neben der seitlichen Positionierung auch die Dichtigkeit der Brennkammer erhöhen und als vorgeschalteter Dichtring wirken.The Front sealing ring can also be positioned in addition to the side increase the tightness of the combustion chamber and as upstream Sealing ring act.
Der vorderseitige Abschnitt und die an ihn angrenzende Generatorwand sind kreiszylinderförmig ausgeführt, das heißt, zwischen dem vorderseitigen Abschnitt und der angrenzenden Generatorwand ergibt sich ein Ringspalt, den der vordere Dichtring ausfüllt.The front section and the generator wall adjacent to it are circular cylindrical executed this means, between the front section and the adjacent generator wall there is an annular gap which the front sealing ring fills.
Die mit einer pyrotechnischen Treibladung gefüllte Brennkammer wird wenigstens abschnittsweise durch die Generatorwand begrenzt, so daß gemäß der bevorzugten Ausführungsform die pyrotechnische Treibladung in der Brennkammer unmittelbar an dem vorderen Dichtring angrenzt.The combustion chamber filled with a pyrotechnic propellant charge is at least limited in sections by the generator wall, so that according to the preferred embodiment the pyrotechnic propellant charge in the combustion chamber immediately adjoins the front sealing ring.
Die Generatorwand ist zum Beispiel mit einer den Sockel umgebenden Abschlußwand verschweißt. Dieses Verschweißen erfolgt vorzugsweise nach dem Befüllen der Brennkammer mit pyrotechnischem Material, so daß die Abschlußwand sozusagen als Deckel für den Generator wirkt. Dieses Verschweißen ist aber risikobehaftet, denn es müssen Vorkehrungen getroffen werden, daß es beim Verschweißen nicht zu einer Zündung des pyrotechnischen Treibsatzes kommt. Der vordere Dichtring ist vorzugsweise zwischen der Schweißnaht und der pyrotechnischen Treibladung vorgesehen, um ein Zünden der pyrotechnischen Treibladung zu verhindern.The The generator wall is, for example, welded to an end wall surrounding the base. This weld together preferably takes place after the combustion chamber has been filled with pyrotechnic Material so the end wall so to speak as a lid for the generator works. But this welding is risky, because precautions must be taken be taken that it when welding not an ignition of the pyrotechnic propellant comes. The front sealing ring is preferred between the weld and the pyrotechnic propellant charge provided to ignite the to prevent pyrotechnic propellant charge.
Gemäß der bevorzugten Ausführungsform erstreckt sich von der Brennkammer ausgehend ein Spalt zwischen Anzünder und Generatorwand zur Schweißnaht, der nur durch den einstückigen Dichtring unterbrochen ist. Weitere Vorkehrungen gegen die Zündung der pyrotechnischen Treibladung beim Schweißen müssen nicht getroffen werden.According to the preferred Embodiment extends a gap between the igniter and Generator wall to the weld seam, that only through the one-piece Sealing ring is interrupted. Further precautions against the ignition of the pyrotechnic propellant charge during welding need not be hit.
Die Generatorwand kann topfförmig ausgebildet sein, sozusagen als Kammer für die pyrotechnische Treibladung. Von der offenen Stirnseite aus ist der Anzünder eingebaut, der in das Innere des Topfes ragt. Am Sockel kann ein zusätzlicher Dichtring vorgesehen sein, der als hinterer Dichtring bezeichnet wird.The Generator wall can be pot-shaped be designed, so to speak, as a chamber for the pyrotechnic propellant charge. The lighter is installed from the open end, which in the Interior of the pot protrudes. An additional sealing ring can be provided on the base be called the rear seal ring.
Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung und aus den nachfolgenden Zeichnungen, auf die Bezug genommen wird. In den Zeichnungen zeigen:Further Features and advantages of the invention result from the following Description and from the following drawings, to the reference is taken. The drawings show:
In
In
der Abschlußwand
Der
Sockel
Ein
vorderer, zweiter Dichtring
Der
Dichtring
Anschließend werden
Generatorwand
Wenn
dann später
der pyrotechnische Treibsatz im eingebauten Zustand gewollt durch
den Anzünder
Bei
der Ausführungsform
nach
Der
hintere Dichtring
Claims (8)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200420011078 DE202004011078U1 (en) | 2004-07-15 | 2004-07-15 | Gas generator for motor vehicle occupant restraint has prefitted igniter surrounded by gas generator wall and with elastic sealing ring |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200420011078 DE202004011078U1 (en) | 2004-07-15 | 2004-07-15 | Gas generator for motor vehicle occupant restraint has prefitted igniter surrounded by gas generator wall and with elastic sealing ring |
Publications (1)
Publication Number | Publication Date |
---|---|
DE202004011078U1 true DE202004011078U1 (en) | 2004-09-30 |
Family
ID=33103913
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200420011078 Expired - Lifetime DE202004011078U1 (en) | 2004-07-15 | 2004-07-15 | Gas generator for motor vehicle occupant restraint has prefitted igniter surrounded by gas generator wall and with elastic sealing ring |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE202004011078U1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005015788B3 (en) * | 2005-04-06 | 2006-10-05 | Trw Airbag Systems Gmbh | Manufacture of gas generator involves making tubular body with aperture, mounting housing on it and joining them by capacitor discharge welding |
DE102005027504A1 (en) * | 2005-06-15 | 2006-12-28 | Acts Advanced Car Technology Systems Gmbh & Co.Kg | Occupant restraint system for e.g. motor vehicle has at least one second airbag or group of second airbags having inner space which can be filled with fluid medium and is spatially separated from first airbag |
DE102005027505A1 (en) * | 2005-06-15 | 2006-12-28 | Acts Advanced Car Technology Systems Gmbh & Co.Kg | Passenger restraint system for e.g. motor vehicle, has inflation device connected with internal spaces of airbags by channels to supply pressure medium into spaces to inflate airbags, where number of airbags is larger than number of device |
DE102007046822A1 (en) * | 2007-09-26 | 2009-04-09 | Takata-Petri Ag | Combustion chamber assembly for an airbag module |
US7631888B2 (en) | 2004-11-10 | 2009-12-15 | Trw Airbag Systems Gmbh | Gas generator and a gas bag module |
DE102012217070A1 (en) * | 2012-09-21 | 2014-03-27 | Karsten Schwuchow | Igniter carrier, ignition unit and method for producing an ignition unit |
-
2004
- 2004-07-15 DE DE200420011078 patent/DE202004011078U1/en not_active Expired - Lifetime
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7631888B2 (en) | 2004-11-10 | 2009-12-15 | Trw Airbag Systems Gmbh | Gas generator and a gas bag module |
DE102005015788B3 (en) * | 2005-04-06 | 2006-10-05 | Trw Airbag Systems Gmbh | Manufacture of gas generator involves making tubular body with aperture, mounting housing on it and joining them by capacitor discharge welding |
US7759597B2 (en) | 2005-04-06 | 2010-07-20 | Trw Airbag Systems Gmbh | Method for manufacturing a gas generator |
DE102005027504A1 (en) * | 2005-06-15 | 2006-12-28 | Acts Advanced Car Technology Systems Gmbh & Co.Kg | Occupant restraint system for e.g. motor vehicle has at least one second airbag or group of second airbags having inner space which can be filled with fluid medium and is spatially separated from first airbag |
DE102005027505A1 (en) * | 2005-06-15 | 2006-12-28 | Acts Advanced Car Technology Systems Gmbh & Co.Kg | Passenger restraint system for e.g. motor vehicle, has inflation device connected with internal spaces of airbags by channels to supply pressure medium into spaces to inflate airbags, where number of airbags is larger than number of device |
DE102007046822A1 (en) * | 2007-09-26 | 2009-04-09 | Takata-Petri Ag | Combustion chamber assembly for an airbag module |
US7976061B2 (en) | 2007-09-26 | 2011-07-12 | Takata-Petri Ag | Combustion chamber unit for an airbag module |
DE102012217070A1 (en) * | 2012-09-21 | 2014-03-27 | Karsten Schwuchow | Igniter carrier, ignition unit and method for producing an ignition unit |
US9879952B2 (en) | 2012-09-21 | 2018-01-30 | Karsten Schwuchow | Igniter carrier, igniter unit and method for producing an igniter unit |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
R207 | Utility model specification |
Effective date: 20041104 |
|
R156 | Lapse of ip right after 3 years |
Effective date: 20080201 |