DE19524651A1 - Inflation device for airbag in motor vehicle - has bag folded in meandering layers around filling tube in housing so that inflation and outward movement of bag takes place incrementally - Google Patents
Inflation device for airbag in motor vehicle - has bag folded in meandering layers around filling tube in housing so that inflation and outward movement of bag takes place incrementallyInfo
- Publication number
- DE19524651A1 DE19524651A1 DE1995124651 DE19524651A DE19524651A1 DE 19524651 A1 DE19524651 A1 DE 19524651A1 DE 1995124651 DE1995124651 DE 1995124651 DE 19524651 A DE19524651 A DE 19524651A DE 19524651 A1 DE19524651 A1 DE 19524651A1
- Authority
- DE
- Germany
- Prior art keywords
- housing
- gas
- folded
- bag
- guide part
- 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
- B60R21/261—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 with means other than bag structure to diffuse or guide inflation fluid
-
- 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
- B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
-
- 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
-
- 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
- B60R21/23—Inflatable members
- B60R21/237—Inflatable members characterised by the way they are folded
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Air Bags (AREA)
Abstract
Description
Die Erfindung betrifft eine Aufblasvorrichtung für eine Airbageinheit, die vorzugsweise in passiven Rückhaltesy stemen zum Schutz von Kraftfahrzeuginsassen vor Verlet zung im Fall einer Kollision als Aufprallschutzvorrich tung Anwendung findet.The invention relates to an inflator for a Airbag unit, which is preferably in passive restraint systems to protect motor vehicle passengers from injury in the event of a collision as an impact protection device tion applies.
Es ist allgemein bekannt, in Kraftfahrzeugen vor einem Fahrzeuglenker bzw. vor einem Beifahrer im Fahrzeuginnen raum eine Gassackhülle gefaltet unterzubringen, welche bei einer Kollision mit Gas gefüllt und vor dem Fahrzeug insassen aufgebläht wird und diesen vor einem Aufprall auf harte Frontinnenraumteile bewahrt und ihn dadurch vor Verletzungen schützt. Dabei ist es üblich, die fahrersei tige Gassackhülle in einem Lenkradtopf und die beifahrer seitige Gassackhülle in einem Behälter in der Armaturen tafel zu deponieren. Die herkömmlichen Systeme weisen ei ne Aufblasvorrichtung mit einem Gasgenerator auf sowie einen Gassack und ein Gehäuse, welches die Aufblasvor richtung und das Gaskissen umschließt. Der Gassack ist, während er sich im Behälter befindet, in eine vorbestimm te Konfiguration zusammengefaltet. Alle bekannten Sicher heitssysteme arbeiten derart, daß bei einer Kollision, d. h. wenn auf das Kraftfahrzeug Verzögerungskräfte einwir ken, deren Absolutwerte eine vorgegebene Größe über schreiten, ein in einem Gehäuse untergebrachter Gasgene rator gezündet wird, Druckgas erzeugt und in dessen Folge mit relativ hohem Druck der Gassack mit Gas gefüllt und auf eine vorbestimmte Konfiguration aufgeblasen und somit entfaltet wird.It is well known in front of a motor vehicle Vehicle driver or in front of a passenger inside the vehicle space to accommodate a folded gas bag cover, which filled with gas in a collision and in front of the vehicle occupants is inflated and this before an impact preserved on hard front interior parts and thereby protect him Protects injuries. It is customary to drive gas bag cover in a steering wheel pot and the front passenger side airbag cover in a container in the fittings deposit blackboard. The conventional systems have egg ne inflator with a gas generator as well an airbag and a housing, which inflate the direction and encloses the gas cushion. The gas bag is while in the container, in a predetermined folded configuration. All known safe Unit systems work in such a way that in the event of a collision, i.e. H. if deceleration forces act on the motor vehicle whose absolute values exceed a predetermined size step, a gas genes housed in a housing rator is ignited, pressurized gas is generated and as a result filled with gas at a relatively high pressure and inflated to a predetermined configuration and thus is unfolded.
Der gemeinsame Nachteil aller vorbekannten einschlägigen technischen Lösungen liegt darin, daß der Gassack als massives Paket aus dem Gehäuse ausgestoßen und entfaltet wird und während der Entfaltung des Gassackes das im all gemeinen aus Metall hergestellte Gehäuse als auch der Gassack selbst in nachteiliger Weise erheblichen Drücken, bedingt durch die erforderliche Beschleunigung einer re lativ großen kompakten Masse, ausgesetzt sind. Dies hat wiederum in nachteiliger Weise zur Folge, daß es während des Entfaltungsvorganges zur Deformation des Gehäuses so wie der unmittelbar umgebenden Bauteile, wie z. B. Arma turentafel und Halter für die Airbageinheit, als auch in seltenen Fällen zur Beschädigung des Gassackes selbst, insbesondere im Bereich des Befestigungsansatzes am Ge häuse, kommen kann. Die bekannten Airbag-Ausführungen ha ben weiterhin den Nachteil, daß sie in ihrer axialen Ent faltungsrichtung, d. h. in Richtung des Fahrzeuginsassen, kaum beeinflußbar bzw. steuerbar sind.The common disadvantage of all known priorities technical solutions is that the gas bag as massive package ejected from the housing and unfolded and during the deployment of the airbag that in space common housing made of metal as well Gas bag even disadvantageously significant pressures, due to the required acceleration of a right relatively large compact mass, are exposed. this has again in a disadvantageous manner that during the unfolding process for deformation of the housing as the immediately surrounding components, such as. B. Arma door panel and holder for the airbag unit, as well as in rare cases of damage to the gas bag itself, especially in the area of the attachment approach on the Ge house that can come. The known airbag designs ha ben still has the disadvantage that they are in their axial Ent direction of folding, d. H. towards the vehicle occupant, can hardly be influenced or controlled.
Der Erfindung liegt die Aufgabe zugrunde, eine Vorrich tung zu schaffen, die die Nachteile der bekannten techni schen Lösungen beseitigt, um die Entfaltungscharakteri stik des Gassackes einer Airbageinheit zu verbessern. Diese Aufgabe wird erfindungsgemäß durch die in den Pa tentansprüchen beschriebenen Maßnahmen bzw. Mittel ge löst.The invention has for its object a Vorrich tion to create the disadvantages of the known techni solutions to the unfolding characteristics to improve the stik of the airbag of an airbag unit. This object is achieved by the in Pa measures or means described solves.
Nachfolgend soll die Erfindung anhand einer Zeichnung, in der mehrere Ausführungsbeispiele der erfindungsgemäßen Lösung dargestellt sind, beispielhaft erläutert werden. Es zeigenIn the following, the invention is to be illustrated using a drawing in of the several embodiments of the invention Solution are shown, are explained as an example. Show it
Fig. 1 bis Fig. 3 jeweils einen Längsschnitt durch die erfin dungsgemäße Vorrichtung mit verschiedenen Aus führungsformen der Faltung der Gassackhülle. Fig. 1 to Fig. 3 each show a longitudinal section through the device according to the inven tion with various embodiments of the folding of the gas bag cover.
Die in der Zeichnung dargestellte erfindungsgemäße Vor richtung besteht im wesentlichen aus einer als Gasgenera tor 1 ausgebildeten Strömungsmittelquelle zur Erzeugung eines Treibgases und einer aufblasbaren, in ihrer Ruhela ge zusammengefalteten und von einem Gehäuse 5 umschlosse nen Gassackhülle 4. Die Vorrichtung ist weiterhin so aus gebildet, daß ein rohrförmig ausgebildetes Gasführungs teil 2, durch das der Gasstrom zum Befüllungsraum der Gassackhülle 4 geführt wird, mit einer an seinem Ende be findlichen Gasaustrittsöffnung 3 versehen ist und das Gasführungsteil 2 seinerseits mit dem Gasgenerator 1 und dem Gehäuse 5 funktionell verbunden ist und durch die Mundöffnung der am Boden des Gehäuses 5 befestigten Gas sackhülle 4 in dessen Befüllungsraum hineinragt. In ihrer Ruhelage ist die Gassackhülle 4 im Gehäuse 5 mäanderför mig so gefaltet, daß das Gasführungsteil 2 von den ein zelnen Lagen der gefalteten Gassackhülle 4 voll umschlos sen wird.The device according to the invention shown in the drawing consists essentially of a gas source designed as a gas generator 1 for generating a propellant gas and an inflatable, in their Ruhela ge folded and enclosed by a housing 5 NEN gas bag cover 4th The device is also formed from that a tubular gas guide part 2 , through which the gas flow is led to the filling space of the gas bag cover 4 , is provided with a gas outlet opening 3 at its end and the gas guide part 2 in turn with the gas generator 1 and the Housing 5 is functionally connected and through the mouth opening of the gas bag attached to the bottom of the housing 5 protrudes 4 into its filling space. In its rest position, the gas bag cover 4 is folded in the housing 5 so that the gas guide part 2 is fully enclosed by the individual layers of the folded gas bag cover 4 .
Hierbei ist es zweckmäßig, die einzelnen Lagen der im Ge häuse 5 mäanderförmig gefalteten Gassackhülle 4 so aus zu bilden, daß sie entweder in Querrichtung, wie in Fig. 1 dargestellt, oder längs, wie in Fig. 2 und 3 darge stellt, zum Gasführungsteil 2 verlaufen. Wie aus Fig. 2 und 3 ersichtlich, sind bei der Faltung in Längsrichtung zwei vorteilhafte Ausführungsformen möglich, wobei einer seits die Faltung so ausgeführt ist, daß ausgehend vom Befestigungsansatz 6 der Gassackhülle 4 am Boden des Ge häuses 5 die Faltung an der Gehäusewand beginnend sich in Richtung auf das Gasführungsteil 2 fortsetzt (Fig. 3) und andererseits die Faltung an dem Gasführungsteil 2 be ginnend sich in Richtung auf die Gehäusewand fortsetzt (Fig. 2). Here, it is useful to form the individual layers of the gas bag cover 4 folded in a meandering manner in the housing 5 such that they either in the transverse direction, as shown in FIG. 1, or lengthways, as shown in FIGS . 2 and 3, to the gas guide part 2 run. As can be seen from FIGS. 2 and 3, two advantageous embodiments are possible when folding in the longitudinal direction, one side of the folding being carried out in such a way that starting from the fastening projection 6 of the gas bag cover 4 at the bottom of the housing 5, the folding on the housing wall begins continues in the direction of the gas guide part 2 ( FIG. 3) and on the other hand, the folding on the gas guide part 2 continues beginning in the direction of the housing wall ( FIG. 2).
Beim Aktivieren des Gasgenerators 1 wird in einem sehr kurzen Zeitintervall der Befüllungsraum der Gassackhülle 4 über das Gasführungsteil 2 mit dem Strömungsmittel ge füllt und dadurch die Gassackhülle 4 aus dem Gehäuse 5 heraus in eine vorbestimmte Konfiguration und gleichzei tig über das Gasführungsteil 2 richtungsbestimmte Endpo sition entfaltet.When activating the gas generator 1 , the filling space of the gas bag cover 4 is filled with the fluid via the gas guide part 2 in a very short time interval and thereby the gas bag cover 4 is unfolded from the housing 5 into a predetermined configuration and simultaneously over the gas guide part 2 .
Die mit der Erfindung erzielten Vorteile bestehen insbe sondere darin, daßThe advantages achieved with the invention are in particular special in that
- - der Gassack nicht in seiner Gesamtheit aus dem Ge häuse herausgestoßen wird, sondern allmählich ent faltet wird,- The gas bag not in its entirety from the Ge is pushed out, but gradually ent is folded
- - die Entfaltungsrichtung des Gassackes sich mittels des Gasführungsteiles und der damit möglichen Steue rung des Gasstromes besser beeinflussen läßt,- The direction of deployment of the airbag itself of the gas guide part and the possible tax can influence the gas flow better,
- - geringere Kräfte zur Entfaltung notwendig sind, da nicht die gesamte Masse des Gassackes auf einmal be schleunigt werden muß.- Lower forces are required to develop, because not the entire mass of the gas bag at once must be accelerated.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1995124651 DE19524651A1 (en) | 1995-07-06 | 1995-07-06 | Inflation device for airbag in motor vehicle - has bag folded in meandering layers around filling tube in housing so that inflation and outward movement of bag takes place incrementally |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1995124651 DE19524651A1 (en) | 1995-07-06 | 1995-07-06 | Inflation device for airbag in motor vehicle - has bag folded in meandering layers around filling tube in housing so that inflation and outward movement of bag takes place incrementally |
Publications (1)
Publication Number | Publication Date |
---|---|
DE19524651A1 true DE19524651A1 (en) | 1997-01-16 |
Family
ID=7766178
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1995124651 Ceased DE19524651A1 (en) | 1995-07-06 | 1995-07-06 | Inflation device for airbag in motor vehicle - has bag folded in meandering layers around filling tube in housing so that inflation and outward movement of bag takes place incrementally |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19524651A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998042545A3 (en) * | 1997-03-21 | 1998-12-23 | Petri Ag | Air bag module, specially a passenger air bag module, with a folded gas bag, and folding method and device |
DE10247395A1 (en) * | 2002-10-07 | 2004-04-15 | Takata-Petri Ag | Passenger air bag module contains gas generator in its base with outlet connecting it to air bag, bars being positioned near outlet with folds of bag over them, so that gas is channeled into bag |
DE19926425B4 (en) * | 1999-06-10 | 2008-07-10 | Adam Opel Ag | Inflator for an airbag unit |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1955145A1 (en) * | 1968-11-04 | 1970-05-27 | Eaton Yale & Towne | Shock absorbing device |
US3628809A (en) * | 1969-10-01 | 1971-12-21 | Kidde & Co Walter | Passenger safety apparatus for vehicles |
JPS51132546A (en) * | 1975-05-13 | 1976-11-17 | Arakawa Shatai Kogyo Kk | Method of housing inlet for gas in safty device of air-bag type for us e in car |
DE2524770A1 (en) * | 1975-06-04 | 1976-12-16 | Volkswagenwerk Ag | SECURITY DEVICE |
DE2163918B2 (en) * | 1970-12-29 | 1979-11-08 | Nissan Motor Co., Ltd., Yokohama, Kanagawa (Japan) | Impact cushion occupant protection system for motor vehicles |
US5087067A (en) * | 1989-05-19 | 1992-02-11 | Honda Giken Kogyo Kabushiki Kaisha | Inflatable bag assembly for protecting a vehicle occupant |
JPH05288938A (en) * | 1992-04-08 | 1993-11-05 | Mitsubishi Electric Corp | Cable holding device |
US5368327A (en) * | 1989-07-12 | 1994-11-29 | Toyoda Gosei, Co., Ltd. | Air bag device |
US5398958A (en) * | 1994-04-15 | 1995-03-21 | Trw Vehicle Safety Systems Inc. | Tethered attachment for an air bag |
-
1995
- 1995-07-06 DE DE1995124651 patent/DE19524651A1/en not_active Ceased
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1955145A1 (en) * | 1968-11-04 | 1970-05-27 | Eaton Yale & Towne | Shock absorbing device |
US3628809A (en) * | 1969-10-01 | 1971-12-21 | Kidde & Co Walter | Passenger safety apparatus for vehicles |
DE2163918B2 (en) * | 1970-12-29 | 1979-11-08 | Nissan Motor Co., Ltd., Yokohama, Kanagawa (Japan) | Impact cushion occupant protection system for motor vehicles |
JPS51132546A (en) * | 1975-05-13 | 1976-11-17 | Arakawa Shatai Kogyo Kk | Method of housing inlet for gas in safty device of air-bag type for us e in car |
DE2524770A1 (en) * | 1975-06-04 | 1976-12-16 | Volkswagenwerk Ag | SECURITY DEVICE |
US5087067A (en) * | 1989-05-19 | 1992-02-11 | Honda Giken Kogyo Kabushiki Kaisha | Inflatable bag assembly for protecting a vehicle occupant |
US5368327A (en) * | 1989-07-12 | 1994-11-29 | Toyoda Gosei, Co., Ltd. | Air bag device |
JPH05288938A (en) * | 1992-04-08 | 1993-11-05 | Mitsubishi Electric Corp | Cable holding device |
US5398958A (en) * | 1994-04-15 | 1995-03-21 | Trw Vehicle Safety Systems Inc. | Tethered attachment for an air bag |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998042545A3 (en) * | 1997-03-21 | 1998-12-23 | Petri Ag | Air bag module, specially a passenger air bag module, with a folded gas bag, and folding method and device |
DE19926425B4 (en) * | 1999-06-10 | 2008-07-10 | Adam Opel Ag | Inflator for an airbag unit |
DE10247395A1 (en) * | 2002-10-07 | 2004-04-15 | Takata-Petri Ag | Passenger air bag module contains gas generator in its base with outlet connecting it to air bag, bars being positioned near outlet with folds of bag over them, so that gas is channeled into bag |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
8110 | Request for examination paragraph 44 | ||
8125 | Change of the main classification |
Ipc: B60R 21/26 |
|
8131 | Rejection |