DE102007048735A1 - Gas generator for airbag module, has ignition device provided for ignition of propellant, and chambers separated from each other such that no parts of propellant end up at end of pipe before ignition of propellant in one of chambers - Google Patents
Gas generator for airbag module, has ignition device provided for ignition of propellant, and chambers separated from each other such that no parts of propellant end up at end of pipe before ignition of propellant in one of chambers Download PDFInfo
- Publication number
- DE102007048735A1 DE102007048735A1 DE102007048735A DE102007048735A DE102007048735A1 DE 102007048735 A1 DE102007048735 A1 DE 102007048735A1 DE 102007048735 A DE102007048735 A DE 102007048735A DE 102007048735 A DE102007048735 A DE 102007048735A DE 102007048735 A1 DE102007048735 A1 DE 102007048735A1
- Authority
- DE
- Germany
- Prior art keywords
- ignition
- propellant
- gas generator
- chamber
- pipe
- 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.)
- Ceased
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
- B60R2021/26076—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 characterised by casing
-
- 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
- B60R2021/2648—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 comprising a plurality of combustion chambers or sub-chambers
Abstract
Description
Die Erfindung betrifft einen Gasgenerator für ein Airbagmodul nach dem Oberbegriff des Anspruchs 1.The The invention relates to a gas generator for an airbag module according to the preamble of claim 1.
Für die Aktivierung von Airbags sind Gasgeneratoren bekannt, die in einem Gasgeneratorengehäuse eine Treibladung mit einer Zündvorrichtung aufweisen. Die Treibladung ist in einer Kammer angeordnet. Außerhalb dieser Kammer ist im Gasgeneratorgehäuse ein Hauptgassatz vorgesehen. Im Crashfall wird zunächst die Treibladung gezündet, die ihrerseits den Hauptgassatz entzündet, durch den das in den Airbag einströmende Gas erzeugt wird.For Activation of airbags are gas generators known in a gas generator housing a propellant charge with a Have ignition. The propellant is in one Chamber arranged. Outside this chamber is in the gas generator housing a main gas kit provided. In the event of a crash, first ignited the propellant charge, which in turn the Hauptgassatz ignited, through which the airbag flowing into Gas is generated.
Die
Kammer für die Treibladung wird bei bekannten Gasgeneratoren
durch eine becherförmige Hülse gebildet, wie es
z. B. in der
Die Treibladung liegt meist in Granulatform und der Hauptgassatz in Tablettenform vor. Durch die Anwendung einer becherförmigen Hülse für die Aufnahme der Treibladung ist ein aufwendiger Herstellungsprozess erforderlich. Hierbei muss zunächst das Granulat der Treibladung in den Becher eingefüllt werden. Anschließend muss das Unterteil des Gasgeneratorgehäuses mit der Zündvorrichtung auf den Becher aufgesetzt und mit diesem verbunden werden. Danach muss das Unterteil um 180° gedreht werden, so dass die Tabletten eingefüllt werden können.The Propellant charge is usually in granular form and the main gas rate in Tablet form. By applying a cup-shaped Sleeve for receiving the propellant charge is a elaborate manufacturing process required. This must first the Granules of propellant charge are poured into the cup. Subsequently, the lower part of the gas generator housing with the igniter placed on the cup and with connected to this. Then the lower part has to be turned by 180 °, so that the tablets can be filled.
Der Erfindung liegt die Aufgabe zugrunde, die Fertigung von Gasgeneratoren zu vereinfachen.Of the Invention is based on the object, the production of gas generators to simplify.
Erfindungsgemäß wird das gemäß den Merkmalen des Anspruchs 1 erreicht.According to the invention achieved according to the features of claim 1.
Bei einem Gasgenerator für ein Airbagmodul mit einem Gasgeneratorgehäuse, in dem eine erste Kammer für die Aufnahme einer Treibladung zur Entzündung eines in einer zweiten Kammer enthaltenen Hauptgassatzes sowie eine Zündvorrichtung für die Entzündung der Treibladung vorgesehen sind, ist erfindungsgemäß die erste Kammer für die Aufnahme der Treibladung durch ein Rohr begrenzt, an dessen ersten Ende die Zündvorrichtung angeordnet ist und dessen zweites Ende zumindest annähernd an das Gasgeneratorgehäuse heranreicht, wobei die erste und die zweite Kammer so gegeneinander abgetrennt sind, dass keine Teile der Treibladung über das zweite Ende des Rohres vor Zündung der Treibladung in die zweite Kammer gelangen können.at a gas generator for an airbag module with a gas generator housing, in which a first chamber for receiving a propellant charge for the ignition of a main gas set contained in a second chamber and an ignition device for the inflammation the propellant charge are provided according to the invention first chamber for receiving the propellant by a Pipe bounded at the first end of the ignition device is arranged and the second end at least approximately comes close to the gas generator housing, wherein the first and the second chamber are separated from each other so that no parts the propellant charge over the second end of the tube before ignition the propellant charge can get into the second chamber.
Bei dieser Anordnung können die heißen Gase der Treibladung zwischen dem zweiten Ende des Rohres und dem Gasgeneratorgehäuse aus der ersten in die zweite Kammer gelangen.at This arrangement can the hot gases of the propellant charge between the second end of the tube and the inflator housing get from the first to the second chamber.
Der Vorteil dieser Anordnung besteht darin, dass der Herstellungsprozess des Gasgenerators vereinfacht wird, weil die Treibladung und die Tabletten des Hauptgassatzes von der gleichen Seite in die erste bzw. zweite Kammer eingefüllt werden können, d. h., dass eine Drehung des Gehäuses nach der Einfüllung der Treibladung, wie bei Verwendung einer becherförmigen Hülse als Begrenzung der ersten Kammer, nicht erforderlich ist.Of the Advantage of this arrangement is that the manufacturing process the gas generator is simplified because the propellant and the Tablets of the main gas set from the same side in the first or second chamber can be filled, d. h., that rotation of the housing after filling the propellant, as when using a cup-shaped Sleeve as the boundary of the first chamber, not required is.
Ein weiterer Vorteil besteht darin, dass Durchbrüche im Rohr entfallen können, da die bei Zündung der Treibladung sich bildenden heißen Gase durch den Zwischenraum zwischen dem Rohrende und dem Gasgeneratorgehäuse aus der ersten in die zweite Kammer mit dem Hauptgassatz strömen können.One Another advantage is that breakthroughs in the pipe can be omitted since the ignition of the propellant charge forming hot gases through the gap between the pipe end and the gas generator housing from the first in the second chamber can flow with the main gas set.
Die Erfindung ist in unterschiedlichen Ausführungsformen realisierbar. So kann das zweite Ende des Rohres am Gasgeneratorgehäuse anliegen, das dort durch den nach Zündung der Treibladung im Rohr entstehenden Druck so verformbar ist, dass ein Zwischenraum zwischen dem zweiten Rohrende und dem Gasgeneratorgehäuse entsteht. Dabei können vor der Zündung der Treibladung zwischen dem Generatorgehäuse und dem anliegenden zweiten Ende des Rohres durch Fertigungstoleranzen bedingte kleine Spalte vorhanden sein. Es muss lediglich gewährleistet sein, dass keine Teile der Treibladung in die zweite Kammer gelangen.The Invention is feasible in different embodiments. So can the second end of the tube on the inflator housing lie there by the after ignition of the propellant charge The resulting pressure in the tube is deformable so that a gap between the second pipe end and the inflator housing arises. In this case, before the ignition of the propellant charge between the generator housing and the adjacent second End of the pipe caused by manufacturing tolerances small column to be available. It only has to be ensured that no parts of the propellant get into the second chamber.
Weiterhin ist es möglich, dass zwischen dem Gasgeneratorgehäuse und dem zweiten Ende des Rohres ein Zwischenraum vorgesehen ist, der durch eine Folie verschlossen ist, die nach Zündung der Treibladung durch den Druck in der ersten Kammer aufreißbar ist.Farther is it possible that between the inflator housing and the second end of the tube is provided with a gap, which is closed by a foil, after ignition the propellant can be ruptured by the pressure in the first chamber is.
Bei Verwendung eines topfförmigen Gasgenerators, wie er bei Fahrerairbags üblich ist, erstreckt sich das Rohr zwischen der vom Boden des Gasgenerators in diesen erstreckenden Zündvorrichtung und dem Deckel des Gasgenerators.at Use of a cup-shaped gas generator, as in Driver airbags is common, the pipe extends between from the bottom of the gas generator in this extending igniter and the lid of the gas generator.
Die Erfindung soll in Ausführungsbeispielen anhand von Zeichnungen erläutert werden.The Invention is intended in embodiments with reference to drawings be explained.
Es zeigen:It demonstrate:
Der
Gasgenerator nach
Das
zweite Ende
Nach
Zündung der Treibladung
Wegen
des entstehenden Spaltes
Aber
auch der Herstellungsprozess des Gasgenerators wird durch die Verwendung
des Rohres
Wie
die
Bei
der Verwendung des Rohres
Bei
der Ausführungsform nach
Infolge
des nach Zündung der Treibladung
Auch
bei dieser zweiten Ausführungsform vereinfacht sich der
Herstellungsprozess, wie in der
ZITATE ENTHALTEN IN DER BESCHREIBUNGQUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- - DE 19812221 [0003] - DE 19812221 [0003]
Claims (4)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007048735A DE102007048735A1 (en) | 2007-10-05 | 2007-10-05 | Gas generator for airbag module, has ignition device provided for ignition of propellant, and chambers separated from each other such that no parts of propellant end up at end of pipe before ignition of propellant in one of chambers |
PCT/EP2008/062225 WO2009047086A1 (en) | 2007-10-05 | 2008-09-15 | Gas generator for an air bag module |
JP2010527390A JP2010540331A (en) | 2007-10-05 | 2008-09-15 | Gas generator for airbag module |
EP08804186A EP2195205B1 (en) | 2007-10-05 | 2008-09-15 | Gas generator for an air bag module |
CN2008801098669A CN101873953B (en) | 2007-10-05 | 2008-09-15 | Gas generator for an air bag module |
US12/659,933 US8276521B2 (en) | 2007-10-05 | 2010-03-25 | Gas generator for an airbag module |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007048735A DE102007048735A1 (en) | 2007-10-05 | 2007-10-05 | Gas generator for airbag module, has ignition device provided for ignition of propellant, and chambers separated from each other such that no parts of propellant end up at end of pipe before ignition of propellant in one of chambers |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102007048735A1 true DE102007048735A1 (en) | 2009-04-09 |
Family
ID=40418230
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102007048735A Ceased DE102007048735A1 (en) | 2007-10-05 | 2007-10-05 | Gas generator for airbag module, has ignition device provided for ignition of propellant, and chambers separated from each other such that no parts of propellant end up at end of pipe before ignition of propellant in one of chambers |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102007048735A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20210179010A1 (en) * | 2019-12-13 | 2021-06-17 | Zf Airbag Germany Gmbh | Gas generator, especially for a vehicle safety system |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2518460B2 (en) * | 1974-04-29 | 1977-03-24 | Societe Nationale Des Poudres Et Explosifs, Paris | PYROTECHNICAL GAS GENERATOR |
WO1994025315A1 (en) * | 1993-04-29 | 1994-11-10 | Automotive Systems Laboratory, Inc. | Inflator having a rupturable igniter tube |
DE19812221A1 (en) | 1997-03-19 | 1998-09-24 | Trw Inc | Airbag inflating system for vehicle occupant safety protection system |
US20010001523A1 (en) * | 1999-06-07 | 2001-05-24 | Lloyd G. Green | Dual stage air bag inflator |
DE202004001018U1 (en) * | 2004-01-23 | 2004-06-03 | Trw Airbag Systems Gmbh | inflator |
-
2007
- 2007-10-05 DE DE102007048735A patent/DE102007048735A1/en not_active Ceased
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2518460B2 (en) * | 1974-04-29 | 1977-03-24 | Societe Nationale Des Poudres Et Explosifs, Paris | PYROTECHNICAL GAS GENERATOR |
WO1994025315A1 (en) * | 1993-04-29 | 1994-11-10 | Automotive Systems Laboratory, Inc. | Inflator having a rupturable igniter tube |
DE19812221A1 (en) | 1997-03-19 | 1998-09-24 | Trw Inc | Airbag inflating system for vehicle occupant safety protection system |
US20010001523A1 (en) * | 1999-06-07 | 2001-05-24 | Lloyd G. Green | Dual stage air bag inflator |
DE202004001018U1 (en) * | 2004-01-23 | 2004-06-03 | Trw Airbag Systems Gmbh | inflator |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20210179010A1 (en) * | 2019-12-13 | 2021-06-17 | Zf Airbag Germany Gmbh | Gas generator, especially for a vehicle safety system |
US11865998B2 (en) * | 2019-12-13 | 2024-01-09 | Zf Airbag Germany Gmbh | Gas generator, especially for a vehicle safety system |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2195205B1 (en) | Gas generator for an air bag module | |
EP2627541B1 (en) | Gas generator and airbag module | |
DE2305908A1 (en) | DEVICE FOR INFLATING A BUMPER PAD IN MOTOR VEHICLES | |
EP0738631A1 (en) | Pyrotechnic gas generator with two separated combustion chambers | |
DE202005011878U1 (en) | Airbag module for motor vehicle has protective casing enclosing gas generator body with opening(s) through which ignition device protrudes out of casing and sealed gas-tight by at least one sealing element | |
EP3100918B1 (en) | Gas generator | |
EP0704347B1 (en) | Gas generator | |
EP0653336B1 (en) | Gas generator | |
DE102011009309A1 (en) | inflator | |
EP2342102A2 (en) | Gas generator, method for the production thereof and module having a gas generator | |
DE2443267A1 (en) | SAFETY DEVICE FOR MOTOR VEHICLE OCCUPANTS | |
DE4443681A1 (en) | Hybrid gas generator for security systems in motor vehicles | |
DE102014010942A1 (en) | Gas generator for a vehicle occupant safety system, airbag module and vehicle occupant safety system with such a gas generator, and manufacturing method | |
DE102008049652B4 (en) | Gas generator with movable overflow opening | |
DE112005000679T5 (en) | Gas generator with reversing axial flow | |
DE102007048735A1 (en) | Gas generator for airbag module, has ignition device provided for ignition of propellant, and chambers separated from each other such that no parts of propellant end up at end of pipe before ignition of propellant in one of chambers | |
EP0680853A1 (en) | Gas generator for side impact protection | |
WO2006084449A1 (en) | Airbag module comprising a gas generator and an airbag | |
DE102006006787A1 (en) | Method of filling a gas generator with pressurized gas as in motor vehicle airbags connects gas generator to opening section of pressure gas chamber | |
WO1998009850A1 (en) | Hybrid gas generator | |
DE19954738A1 (en) | Hybrid gas generator for inflation of airbags in motor vehicles has fuel gas container closed by burst unit with support unit against internal container pressure | |
DE19545077A1 (en) | Vehicle airbag rapid inflation device | |
DE102017128886A1 (en) | Pyrotechnic gas generator | |
DE19725475A1 (en) | Gas generator | |
DE19531667A1 (en) | Pyrotechnic gas generator with two separate combustion chambers |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
R082 | Change of representative |
Representative=s name: MAIKOWSKI & NINNEMANN PATENTANWAELTE, DE |
|
R081 | Change of applicant/patentee |
Owner name: TAKATA AKTIENGESELLSCHAFT, DE Free format text: FORMER OWNER: TAKATA-PETRI AG, 63743 ASCHAFFENBURG, DE Effective date: 20120904 |
|
R082 | Change of representative |
Representative=s name: MAIKOWSKI & NINNEMANN PATENTANWAELTE, DE Effective date: 20120904 |
|
R016 | Response to examination communication | ||
R002 | Refusal decision in examination/registration proceedings | ||
R003 | Refusal decision now final |
Effective date: 20140103 |