DE102004039079B4 - Airbag unit for a motor vehicle - Google Patents
Airbag unit for a motor vehicle Download PDFInfo
- Publication number
- DE102004039079B4 DE102004039079B4 DE200410039079 DE102004039079A DE102004039079B4 DE 102004039079 B4 DE102004039079 B4 DE 102004039079B4 DE 200410039079 DE200410039079 DE 200410039079 DE 102004039079 A DE102004039079 A DE 102004039079A DE 102004039079 B4 DE102004039079 B4 DE 102004039079B4
- Authority
- DE
- Germany
- Prior art keywords
- housing
- gas bag
- gas
- sleeve
- steering wheel
- 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 - Fee Related
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
- B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
- B60R21/203—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in steering wheels or steering columns
- B60R21/2035—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in steering wheels or steering columns using modules containing inflator, bag and cover attachable to the steering wheel as a complete sub-unit
- B60R21/2037—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in steering wheels or steering columns using modules containing inflator, bag and cover attachable to the steering wheel as a complete sub-unit the module or a major component thereof being yieldably mounted, e.g. for actuating the horn switch or for protecting the driver in a non-deployment situation
-
- 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
- B60R21/276—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 to vent the inflation fluid source, e.g. in case of overpressure
-
- 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
- B60R21/276—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 to vent the inflation fluid source, e.g. in case of overpressure
- B60R2021/2765—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 to vent the inflation fluid source, e.g. in case of overpressure comprising means to control the venting
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Air Bags (AREA)
Abstract
Gassack-Einheit für ein Kraftfahrzeug, aufweisend
ein Gehäuse (20) mit einem Gassack (10) und einem Gasgenerator (12) sowie mit radialen Abströmöffnungen (24), durch welche das Gas aus dem Gassack (10) austreten kann, wobei das Gehäuse (20) über ein Federelement (28) in einer starr mit dem Kraftfahrzeug verbundenen Hülse (26) axial verschieblich angeordnet ist
und wobei der effektive Querschnitt der Abströmöffnungen (24) verändert wird in Abhängigkeit von der Relativbewegung des Gehäuses (20) und der Hülse (26), hervorgerufen durch die von dem Insassen mittelbar auf das Gehäuse (20) ausgeübte, gegen die Federkraft des Federelementes (28) wirkende Kraft.Airbag unit for a motor vehicle, comprising
a housing (20) with an airbag (10) and a gas generator (12) and with radial outflow openings (24) through which the gas can escape from the airbag (10), wherein the housing (20) via a spring element (28) in a rigidly connected to the motor vehicle sleeve (26) is arranged axially displaceable
and wherein the effective cross section of the outflow openings (24) is changed in dependence on the relative movement of the housing (20) and the sleeve (26), caused by the occupant indirectly to the housing (20), against the spring force of the spring element ( 28) acting force.
Description
Die Erfindung betrifft eine Gassack-Einheit für ein Kraftfahrzeug.The The invention relates to a gas bag unit for a motor vehicle.
Fahrer-
und Beifahrer-Gassäcke
in Kraftfahrzeugen sind zumeist kissenförmig mit großer Tiefe
ausgestaltet. Eine ideale und schonende Schutzwirkung für den Insassen
ergibt sich, wenn die gesamte Tiefe des Gassacks als Bremsweg für den Kopf/Brustbereich
des Insassen genutzt wird. Um dieses Ziel zu erreichen, ist es beispielsweise
bekannt, bei solchen Gassäcken
variable Abströmöffnungen
vorzusehen, deren effektiver Querschnitt sich bei steigendem Innendruck
verkleinert. Dadurch wird erreicht, dass bei hohen Geschwindigkeiten
bzw. bei einem schweren Insassen eine höhere Rückhaltekraft zur Verfügung steht,
als bei geringen Geschwindigkeiten und einem leichten Insassen.
Mit einer solchen Gassack-Einheit wird also eine Anpassung der Gassackhärte an das
jeweils Benötigte
erreicht. Eine solche Gassack-Einheit ist beispielsweise aus der
Aus
der
Nachteilig an einer solchen Gassack-Einheit ist, dass der Innendruck nicht nur mit Aufprallgeschwindigkeit und Schwere des Insassen, sondern beispielsweise auch stark mit der Temperatur des einströmenden Gases vari iert. Dieser Effekt kann sich insbesondere auf kleine und leichte Insassen negativ auswirken, da er zu einem zu harten Gassack führen kann.adversely On such a gas bag unit is that the internal pressure is not only with impact speed and gravity of the occupant, but for example also varies greatly with the temperature of the incoming gas. This Effect can be particularly negative on small and light occupants because it can lead to too heavy a gas bag.
Aus
der
Aus
der
Es ist weiterhin bekannt, auf andere Weisen Einfluss auf die Gestalt und/oder die Härte des Gassacks Einfluss zu nehmen. So gibt es zum Beispiel zweistufige Gasgeneratoren, deren zweite Stufe nur bei Bedarf zündet. Es ist auch möglich Fangbänder zur Begrenzung der Tiefe des Gassacks einzusetzen, deren Befestigungsbolzen bedarfsweise abgesprengt werden.It is still known to influence the figure in other ways and / or the hardness to influence the gas bag. For example, there are two-tiered ones Gas generators whose second stage ignites only when needed. It is possible, too Tethers for Limit the depth of the gas bag to use their fastening bolts be blown off if necessary.
Hiervon ausgehend ist es Aufgabe der Erfindung, eine Gassack-Einheit dahingehend weiterzubilden, dass bei der Selbstregelung des Innendrucks und/oder der Gestalt des Gassacks Effekte, die von Gewicht und Aufprallgeschwindigkeit des Insassen unabhängig sind, zu minimieren.Of these, Based on the object of the invention, a gas bag unit to the effect to develop that in the self-regulation of the internal pressure and / or the shape of the gas bag effects by weight and impact speed of the occupant independently are to minimize.
Diese Aufgabe wird durch eine Gassack-Einheit mit den Merkmalen des Anspruchs 1 oder des Anspruchs 2 gelöst.These Task is by an airbag unit with the features of the claim 1 or claim 2 solved.
Erfindungsgemäß wird als Regelgröße die Kraft herangezogen, die zwischen dem gefüllten Gassack und einem feststehenden Teil herrscht. Diese Kraft ist in der Regel direkt proportional zu der vom Insassen auf den Gassack übertragenen Kraft, welche wiederum im wesentlichen nur von der Aufprallgeschwindigkeit und dem Gewicht des Insassen abhängt. Von anderen Faktoren ist diese Kraft unabhängig. Diese Kraft wird zum direkten Ansteuern eines beweglichen Elements genutzt.According to the invention as Controlled variable the force used between the filled gas bag and a fixed Part prevails. This force is usually directly proportional to the transmitted from the occupant to the gas bag force, which in turn essentially only the impact speed and the weight of the occupant. From other factors, this force is independent. This power becomes the used directly driving a movable element.
Die erfindungsgemäße Gassack-Einheit weist eine Ventilanordnung auf, deren wenigstens eine Abströmöffnung einen veränderbaren effektiven Querschnitt aufweist. Die Ventilanordnung weist einen ersten und einen zweiten Abschnitt auf, wobei der erste Abschnitt direkt oder indirekt mit dem befüllten Gassack und der zweite Abschnitt starr mit dem Fahrzeug verbunden ist. Die Veränderung des effektiven Querschnitts der Abströmöffnung hängt zumindest in einem gewissen Lastbereich von der Kraft ab, die zwischen den beiden Abschnitten herrscht. Hierdurch wird erreicht, dass der effektive Querschnitt der Abströmöffnung, und somit die Härte des Gassacks, nur von der vom Insassen in den Gassack eingeleiteten Kraft abhängt und vom Innendruck des Gassacks im wesentlichen unabhängig ist.The inventive gas bag unit has a valve arrangement, whose at least one outflow opening a changeable has effective cross section. The valve assembly has a first and a second section, wherein the first section directly or indirectly with the filled Airbag and the second section rigidly connected to the vehicle is. The change the effective cross section of the discharge opening depends at least to some extent Load range from the force acting between the two sections prevails. This will ensure that the effective cross section the discharge opening, and thus the hardness of the gas bag, only from the inmate introduced into the gas bag Force depends and is substantially independent of the internal pressure of the gas bag.
Die Erfindung wird nun mit Bezug auf die Figuren näher erläutert. Hierbei zeigen:The The invention will now be explained in more detail with reference to the figures. Hereby show:
Mittels der als Befestigungselemente
dienenden Stützen
By means of the supports serving as fasteners
Gehäuse
Die
Funktionsweise der Ventilanordnung kann man gut anhand der
Fällt nun,
wie in
Die
In
Bezug auf die Ventilanordnung ist das Gehäuse
Wie
man anhand
Die
Wirkungsweise sieht man anhand
Um die Belastung eines sich nicht in Standard-Sitzposition befindenden Insassen (Out of position) durch den Gassack zu vermindern, kann eine mechanische oder elektronische Steuerung vorgesehen sein, die bewirkt, dass dann, wenn zu einem sehr frühen Zeitpunkt eine große Krafteinleitung in den Gassack stattfindet, keine Verkleinerung des Querschnitts der Abströmöff nung erfolgt, oder diese sogar vergrößert wird. Bei einer mechanischen Lösung kann dies dadurch erreicht werden, dass bei Auslösen des Gassacks die Abdeckung für die Abströmöffnungen für eine gewisse Zeit blockiert wird.Around the load of a not in standard sitting position Can reduce occupants (out of position) by the gas bag, can be provided a mechanical or electronic control, the causes, if at a very early stage a large force application takes place in the gas bag, no reduction of the cross section the Abströmöff tion takes place or even enlarged. In a mechanical solution can This can be achieved in that when the gas bag is triggered, the cover for the outflow openings for one certain time is blocked.
Die erfindungsgemäße Gassack-Einheit wurde anhand von Ausführungsbeispielen für einen Fahrer-Gassack erläutert, es ist jedoch klar, dass das erfindungsgemäße Prinzip, insbesondere gemäß des ersten Ausführungsbeispiels, auf einen Beifahrer-Gassack angewendet werden kann.The Inventive airbag unit was based on embodiments for a driver's airbag explains However, it is clear that the principle of the invention, in particular according to the first Embodiment, can be applied to a passenger gas bag.
- 1010
- Gassackairbag
- 1212
- Gasgenerator-EinheitGas generator unit
- 12a12a
- Ausströmöffnungenoutflow
- 1414
- Abdeckungcover
- 2020
- Gehäusecasing
- 2222
- Bodenground
- 2424
- Abströmöffnungoutflow
- 2626
- Hülseshell
- 2727
- Stützesupport
- 2828
- Druckfedercompression spring
- 3030
- Lenkradkranzsteering wheel rim
- 3232
- Speichespoke
- 32a32a
- beweglicher AbschnittPortable section
- 3434
- Nabehub
- 3535
- Lenksäulesteering column
- 3636
- Zugbandtieback
Claims (2)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410039079 DE102004039079B4 (en) | 2004-08-12 | 2004-08-12 | Airbag unit for a motor vehicle |
PCT/EP2005/008500 WO2006018156A1 (en) | 2004-08-12 | 2005-08-05 | Airbag unit for a motor vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410039079 DE102004039079B4 (en) | 2004-08-12 | 2004-08-12 | Airbag unit for a motor vehicle |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102004039079A1 DE102004039079A1 (en) | 2006-03-23 |
DE102004039079B4 true DE102004039079B4 (en) | 2009-06-10 |
Family
ID=35058598
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200410039079 Expired - Fee Related DE102004039079B4 (en) | 2004-08-12 | 2004-08-12 | Airbag unit for a motor vehicle |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE102004039079B4 (en) |
WO (1) | WO2006018156A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006039991A1 (en) * | 2006-08-25 | 2008-02-28 | GM Global Technology Operations, Inc., Detroit | Air bag system for vehicle passenger, particularly for arranging on steering wheel of motor vehicle, has resulting cross section of discharge opening provided for damping of airbag during or after its unfolding |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3758133A (en) * | 1970-06-04 | 1973-09-11 | Honda Motor Co Ltd | Shock absorbing air bag apparatus in a motor car |
DE2116347B2 (en) * | 1971-04-03 | 1979-10-25 | Daimler-Benz Ag, 7000 Stuttgart | Vent valve for a gas bag |
US5234229A (en) * | 1992-02-25 | 1993-08-10 | General Motors Corporation | Pressure limited restraint system |
DE19630855A1 (en) * | 1996-07-31 | 1997-07-17 | Daimler Benz Ag | Airbag for motor vehicle |
DE29906477U1 (en) * | 1999-04-06 | 1999-08-12 | Petri Ag, 63743 Aschaffenburg | Airbag unit |
DE19912369A1 (en) * | 1999-03-19 | 2000-10-05 | Bsrs Restraint Syst Gmbh | Airbag module controlled by dynamics |
DE20012864U1 (en) * | 2000-07-25 | 2000-11-30 | Trw Automotive Safety Sys Gmbh | Airbag module |
DE10162229A1 (en) * | 2001-01-10 | 2002-09-19 | Trw Vehicle Safety Systems | Airbag module with ventilation |
DE10296947T5 (en) * | 2001-06-27 | 2004-07-01 | Autoliv Development Ab | Airbag assembly |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6899134B2 (en) * | 2001-10-23 | 2005-05-31 | Automotive Technologies International, Inc. | Discharge valves for airbags and airbags including the same |
US5280953A (en) * | 1992-11-25 | 1994-01-25 | General Motors Corporation | Displacement responsive air bag vent |
DE29609703U1 (en) * | 1996-05-31 | 1996-09-26 | Trw Repa Gmbh | Gas bag |
US6371517B1 (en) * | 1999-12-28 | 2002-04-16 | Delphi Technologies, Inc. | Adaptive inflation mechanism |
US6832778B2 (en) * | 2002-07-19 | 2004-12-21 | Delphi Technologies, Inc. | Air bag restraint including selectively operable venting elements |
-
2004
- 2004-08-12 DE DE200410039079 patent/DE102004039079B4/en not_active Expired - Fee Related
-
2005
- 2005-08-05 WO PCT/EP2005/008500 patent/WO2006018156A1/en active Application Filing
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3758133A (en) * | 1970-06-04 | 1973-09-11 | Honda Motor Co Ltd | Shock absorbing air bag apparatus in a motor car |
DE2116347B2 (en) * | 1971-04-03 | 1979-10-25 | Daimler-Benz Ag, 7000 Stuttgart | Vent valve for a gas bag |
US5234229A (en) * | 1992-02-25 | 1993-08-10 | General Motors Corporation | Pressure limited restraint system |
DE19630855A1 (en) * | 1996-07-31 | 1997-07-17 | Daimler Benz Ag | Airbag for motor vehicle |
DE19912369A1 (en) * | 1999-03-19 | 2000-10-05 | Bsrs Restraint Syst Gmbh | Airbag module controlled by dynamics |
DE29906477U1 (en) * | 1999-04-06 | 1999-08-12 | Petri Ag, 63743 Aschaffenburg | Airbag unit |
DE20012864U1 (en) * | 2000-07-25 | 2000-11-30 | Trw Automotive Safety Sys Gmbh | Airbag module |
DE10162229A1 (en) * | 2001-01-10 | 2002-09-19 | Trw Vehicle Safety Systems | Airbag module with ventilation |
DE10296947T5 (en) * | 2001-06-27 | 2004-07-01 | Autoliv Development Ab | Airbag assembly |
Also Published As
Publication number | Publication date |
---|---|
DE102004039079A1 (en) | 2006-03-23 |
WO2006018156A1 (en) | 2006-02-23 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8364 | No opposition during term of opposition | ||
R082 | Change of representative |
Representative=s name: SCHOEN, THILO, DIPL.-PHYS., DE |
|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |