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WO2014056585A1 - Airbag for a motor vehicle - Google Patents

Airbag for a motor vehicle Download PDF

Info

Publication number
WO2014056585A1
WO2014056585A1 PCT/EP2013/002969 EP2013002969W WO2014056585A1 WO 2014056585 A1 WO2014056585 A1 WO 2014056585A1 EP 2013002969 W EP2013002969 W EP 2013002969W WO 2014056585 A1 WO2014056585 A1 WO 2014056585A1
Authority
WO
WIPO (PCT)
Prior art keywords
airbag
support structure
retention
volume
volume elements
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
Application number
PCT/EP2013/002969
Other languages
German (de)
French (fr)
Inventor
Ralf Bogenrieder
Christian Burczyk
Andreas Hirth
Friedrich Reiter
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mercedes Benz Group AG
Original Assignee
Daimler AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Daimler AG filed Critical Daimler AG
Publication of WO2014056585A1 publication Critical patent/WO2014056585A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • B60R21/23—Inflatable members
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • 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
    • B60R2021/161—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags characterised by additional means for controlling deployment trajectory
    • 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
    • B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
    • B60R2021/23115—Inflatable members characterised by their shape, construction or spatial configuration with inflatable support compartments creating an internal suction volume

Definitions

  • the invention relates to an airbag of a motor vehicle according to the preamble of patent claim 1.
  • the airbag has a support structure comprising a plurality of volume elements.
  • the support structure is movable from a storage position to a retention position by pressurizing the volume elements with a medium, in particular gas.
  • the support structure In its retention position, the support structure surrounds a retention volume of the airbag at least in regions.
  • the support structure can be particularly fast, i. be moved in a short time, from the storage position to the retention position and occupy a particularly large volume in the interior of the motor vehicle in the retention position, so that at least one vehicle occupant in an accidental
  • Storage position can be moved to its retention position.
  • the support structure has a base portion which comprises a part of the volume elements and in the retaining position in support system with the
  • Windshield of the motor vehicle is movable.
  • the base region extends in the retaining position on both sides a respective, each a further part of
  • the base region is in the retaining position of the support structure in at least partially support system with the windshield.
  • the base area can not directly or directly interact with a vehicle occupant, if this at a
  • Support structure bounces which is referred to as immersion.
  • This lack of integration leads to a particularly low load on the vehicle occupant, especially if this is in an unfavorable position relative to the support structure.
  • Such an unfavorable position is also referred to as out-of-position (OOP).
  • OOP out-of-position
  • the arrangement of the base area also supports the movement of the
  • Support structure i. an unfolding of the support structure from its storage position to the retention position, so that a particularly rapid filling of the
  • Retention volume with a gaseous medium, in particular with air from the interior of the motor vehicle can be realized.
  • a particularly robust installation of the support structure can be achieved in its retention position, so that they occupy an advantageous position in the interior and the
  • Vehicle occupants can catch very well.
  • the base area also offers an additional protective function due to its corresponding arrangement between the windscreen and the side areas. Since the base region is arranged in front of the windshield, ie between the windshield and the vehicle occupant and in particular between the windshield and the side regions, the risk of the vehicle occupant and in particular his head breaking through onto the windshield can be kept particularly low. It is also possible, such a strike through the Base area to mitigate, which is particularly advantageous if the
  • Vehicle occupant has not put on his seat belt and thus is not additionally retained by the seat belt.
  • the airbag according to the invention is quickly and easily attachable to different vehicles, in particular instrument panels.
  • the airbag in particular in terms of its width and / or in terms of the design and arrangement of the volume elements, particularly time and cost to be adapted to different conditions in the interior of the corresponding vehicle.
  • the airbag according to the invention is particularly simple and inexpensive to produce, since the support structure can be easily cut, for example.
  • Figure 1 is a schematic plan view of an airbag for a motor vehicle, having a support structure comprising a plurality of volume elements, wherein the support structure is movable by loading the volume elements with a medium, in particular gas, from a storage position to the retention position.
  • FIG. 2 shows a detail of a schematic perspective view of an interior of a motor vehicle with the airbag, the support structure being in its retaining position;
  • FIG. 3 is a schematic plan view of the airbag according to FIG. 2;
  • FIG. 4 shows a detail of a further schematic perspective view of the
  • Fig. 5 shows a detail of a schematic and perspective exterior view of the motor vehicle with the airbag.
  • Fig. 1 shows a designated as a whole with 10 airbag for a in Figs. 2 to 5 partially recognizable and denoted as a whole by 11 passenger cars.
  • the airbag 10 includes a support structure 12 which includes a plurality of
  • Volume elements 14, 16, 18 includes.
  • the volume elements 14, 16, 18 are at least substantially tubular and thus formed as a tubular elements.
  • the volume elements 14, 16, 18 have a respective volume, which is acted upon by a medium and gas in the present case. In other words, the
  • Volume elements 14, 16, 18 are acted upon by the gas by blowing the gas into the respective volumes.
  • the respective volumes are at least partially fluidly connected to each other.
  • all volumes of the volume elements 14, 16, 18 are fluidly connected to each other. Due to the fluidic connection of the individual volumes, a fluidically coherent total volume is formed, which can be inflated with the gas.
  • the support structure 12 is moved from a storage position to a recognizable in Fig. 2 to 5 retention position. In the retention position, a retention volume 20 of the airbag 10 is at least partially surrounded by the support structure 12.
  • the inflation of the total volume by means of at least one actuator in the form of a gas generator of the airbag 10.
  • the support structure 12 can be moved due to the corresponding configuration of the volume elements 14, 16, 18 and due to their fluid connection with each other particularly fast from the storage position to the retention position and in the interior 22 of the passenger car 11 occupy a particularly large volume. This allows the airbag 10 at least one vehicle occupant in an accidental force of the
  • the volume elements 14, 16, 18 represent respective strut elements of the truss structure, between which free spaces 24 and
  • Retention volume 20 flow.
  • This filling of the retention volume 20 with air from the interior 22 takes place at least partially and preferably completely passive.
  • the support structure 12 is moved from the storage position to the retention position, the retention volume 20 is successively increased.
  • a negative pressure is created in the retention volume 20, as a result of which air from the interior 22 is sucked into the retention volume 20 at least substantially passively.
  • This filling of the retention volume 20 with air can be actively supported, for example, by means of at least one further actuator, in particular by means of at least one further gas generator, of the airbag 10.
  • the airbag 10 also includes an enclosure 26, by which the retention volume 20 is at least partially surrounded.
  • the sheath 26 is at least partially disposed in between the volume elements 14, 16, 18, so that free spaces between the volume elements 14, 16, 18 are at least partially covered by the sheath 26.
  • the envelope 26 has flow openings 28 through which the air from the
  • Interior 22 in the movement of the support structure 12 in the retention position in the retention volume 20 can flow.
  • the support structure has a
  • Base region 30 includes the volume elements 14.
  • a respective side region 32, 34 of the support structure adjoins the base region 30 on both sides, wherein the side region 32 encloses the volume elements 18 and the
  • the volume elements 16 of the support structure 12 includes.
  • the side regions 32, 34 extend rearwardly away from the base region 30 at least substantially in the vehicle longitudinal direction, the base region 30 facing a windshield 36 of the passenger car 11 and in support with the windshield 36 is movable. It can be provided that the base region 30 in the
  • Retaining position of the support structure 12 is in support system with the windshield 36.
  • the side regions 32, 34 are at least substantially symmetrical, in particular axially symmetrical, to one another and form respective wing elements which extend away from the base region 30.
  • the side regions 32, 34 extend in the present case obliquely to the vehicle longitudinal direction and in
  • clamping elements in the form of tension bands 38 of the airbag 10 are provided in order to hold the side regions 32, 34 in a corresponding orientation relative to one another.
  • the envelope 26 can also be provided, by which the side regions 32, 34 are then held in their respective orientation to one another.
  • the envelope 26 is connected to the support structure 12 accordingly.
  • the volume elements 14 represent base tubes of the base region 30, which now - seen from the interior 22 - on or in front of the windshield 36. Furthermore, the side regions 32, 34 are arranged between the vehicle occupant or between a seat for the vehicle occupant and the base region 30. As a result, the base tubes can not interact with the vehicle occupant in its accidental displacement when the vehicle occupant bounces on the support structure 12. This leads to a particularly low occupant load, if this on the
  • Support structure 12 impacts, which is also referred to as immersion.
  • the load on the vehicle occupant can be kept low if this is in an unfavorable position relative to the support structure 2.
  • the arrangement of the base tubes of the base portion 30 also facilitates deployment, ie, the movement of the support structure 12 from the storage position to the Retention position, so that a particularly fast filling of the retention volume 20 is achieved.
  • the base tubes lie in front of the windscreen 36 so that an additional protective function as in a so-called window airbag (window bag) is formed. In this case, all structures of a so-called window-bag can be integrated into the airbag 10.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)

Description

Airbag eines Kraftwagens  Airbag of a motor vehicle

Die Erfindung betrifft einen Airbag eines Kraftwagens gemäß dem Oberbegriff von Patentanspruch 1. The invention relates to an airbag of a motor vehicle according to the preamble of patent claim 1.

Ein solcher Airbag ist der DE 10 2007 052 246 A1 als bekannt zu entnehmen. Der Airbag weist eine Stützstruktur auf, welche eine Mehrzahl von Volumenelementen umfasst. Die Stützstruktur ist durch Beaufschlagen der Volumenelemente mit einem Medium, insbesondere Gas, aus einer Aufbewahrungsposition in eine Rückhalteposition bewegbar. Such an airbag can be found in DE 10 2007 052 246 A1 as known. The airbag has a support structure comprising a plurality of volume elements. The support structure is movable from a storage position to a retention position by pressurizing the volume elements with a medium, in particular gas.

In ihrer Rückhalteposition umgibt die Stützstruktur ein Rückhaltevolumen des Airbags zumindest bereichsweise. Die Stützstruktur kann dabei besonders schnell, d.h. in kurzer Zeit, aus der Aufbewahrungsposition in die Rückhalteposition bewegt werden und in der Rückhalteposition ein besonders großes Volumen im Innenraum des Kraftwagens einnehmen, so dass wenigstens ein Fahrzeuginsasse bei einer unfallbedingten In its retention position, the support structure surrounds a retention volume of the airbag at least in regions. The support structure can be particularly fast, i. be moved in a short time, from the storage position to the retention position and occupy a particularly large volume in the interior of the motor vehicle in the retention position, so that at least one vehicle occupant in an accidental

Kraftbeaufschlagung und einer daraus resultierenden, unfallbedingten Verlagerung des Fahrzeuginsassen sehr gut aufgefangen, rückgehalten und vor schwerwiegenden Verletzungen geschützt werden kann. Kraftbeaufschlagung and a resulting accidental relocation of the vehicle occupant very well collected, withheld and protected against serious injury.

Es ist dabei von Vorteil, wenn sich die Stützstruktur besonders schnell aus ihrer It is advantageous if the support structure is particularly fast from their

Aufbewahrungsposition in ihre Rückhalteposition bewegt. Storage position moved to its retention position.

Es ist daher Aufgabe der vorliegenden Erfindung, einen Airbag der eingangs genannten Art derart weiterzuentwickeln, dass die Stützstruktur besonders schnell aus ihrer It is therefore an object of the present invention, an airbag of the type mentioned in such a way that the support structure very quickly from their

Aufbewahrungsposition in ihre Rückhalteposition bewegt werden kann. Storage position can be moved to its retention position.

Um einen Airbag der im Oberbegriff des Patentanspruchs 1 angegebenen Art zu schaffen, dessen Stützstruktur besonders schnell, d.h. in besonders kurzer Zeit aus der Aufbewahrungsposition in die Rückhalteposition bewegbar ist, ist es erfindungsgemäß vorgesehen, dass die Stützstruktur einen Basisbereich aufweist, welcher einen Teil der Volumenelemente umfasst und in der Rückhalteposition in Stützanlage mit der To provide an airbag specified in the preamble of claim 1 species whose support structure particularly fast, ie in a very short time from the Stored storage position in the retaining position, it is provided according to the invention that the support structure has a base portion which comprises a part of the volume elements and in the retaining position in support system with the

Windschutzscheibe des Kraftwagens bewegbar ist. Von dem Basisbereich erstreckt sich in der Rückhalteposition beidseitig ein jeweiliger, jeweils einen weiteren Teil der Windshield of the motor vehicle is movable. Of the base region extends in the retaining position on both sides a respective, each a further part of

Volumenelemente umfassender Seitenbereich der Stützstruktur zumindest im Volume elements comprehensive side region of the support structure at least in

Wesentlichen in Fahrzeuglängsrichtung nach hinten weg. Vorzugsweise ist es Essentially in the vehicle longitudinal direction to the rear away. Preferably it is

vorgesehen, dass sich der Basisbereich in der Rückhalteposition der Stützstruktur in zumindest bereichsweiser Stützanlage mit der Windschutzscheibe befindet. provided that the base region is in the retaining position of the support structure in at least partially support system with the windshield.

Infolge dieser Ausgestaltung der Stützstruktur kann der Basisbereich nicht direkt bzw. unmittelbar mit einem Fahrzeuginsassen interagieren, wenn dieser bei einer As a result of this configuration of the support structure, the base area can not directly or directly interact with a vehicle occupant, if this at a

unfallbedingten Kraftbeaufschlagung des Kraftwagens verlagert wird und auf die accidental force application of the motor vehicle is relocated and on the

Stützstruktur aufprallt, was als Eintauchen bezeichnet wird. Diese mangelnde Integration führt zu einer besonders geringen Belastung des Fahrzeuginsassen, insbesondere wenn sich dieser in einer ungünstigen Position relativ zur Stützstruktur befindet. Eine solche ungünstige Position wird auch als Out-of-Position (OOP) bezeichnet. Mit anderen Worten kann der Fahrzeuginsasse, obwohl sich dieser in einer ungünstigen Position relativ zur Stützstruktur befindet, dennoch besonders vorteilhaft aufgefangen, rückgehalten und vor schwerwiegenden Verletzungen geschützt werden. Support structure bounces, which is referred to as immersion. This lack of integration leads to a particularly low load on the vehicle occupant, especially if this is in an unfavorable position relative to the support structure. Such an unfavorable position is also referred to as out-of-position (OOP). In other words, although the vehicle occupant is in an unfavorable position relative to the support structure, the vehicle occupant can still be caught, retained and protected against serious injuries.

Die Anordnung des Basisbereichs unterstützt darüber hinaus die Bewegung der The arrangement of the base area also supports the movement of the

Stützstruktur, d.h. eine Entfaltung der Stützstruktur aus ihrer Aufbewahrungsposition in die Rückhalteposition, so dass eine besonders schnelle Befüllung des Support structure, i. an unfolding of the support structure from its storage position to the retention position, so that a particularly rapid filling of the

Rückhaltevolumens mit einem gasförmigen Medium, insbesondere mit Luft aus dem Innenraum des Kraftwagens, realisiert werden kann. Darüber hinaus kann eine besonders robuste Aufstellung der Stützstruktur in ihre Rückhalteposition erreicht werden, so dass sie eine vorteilhafte Stellung im Innenraum einnehmen und den Retention volume with a gaseous medium, in particular with air from the interior of the motor vehicle, can be realized. In addition, a particularly robust installation of the support structure can be achieved in its retention position, so that they occupy an advantageous position in the interior and the

Fahrzeuginsassen sehr gut auffangen kann. Vehicle occupants can catch very well.

Der Basisbereich bietet aufgrund seiner entsprechenden Anordnung zwischen der Windschutzscheibe und den Seitenbereichen auch eine zusätzliche Schutzfunktion. Da der Basisbereich vor der Windschutzscheibe, d.h. zwischen der Windschutzscheibe und dem Fahrzeuginsassen und insbesondere zwischen der Windschutzscheibe und den Seitenbereichen angeordnet ist, kann die Gefahr, dass der Fahrzeuginsasse und insbesondere sein Kopf auf die Windschutzscheibe durchschlägt, besonders gering gehalten werden. Ebenso ist es möglich, ein solches Durchschlagen mittels des Basisbereichs abzumildern, was insbesondere dann vorteilhaft ist, wenn der The base area also offers an additional protective function due to its corresponding arrangement between the windscreen and the side areas. Since the base region is arranged in front of the windshield, ie between the windshield and the vehicle occupant and in particular between the windshield and the side regions, the risk of the vehicle occupant and in particular his head breaking through onto the windshield can be kept particularly low. It is also possible, such a strike through the Base area to mitigate, which is particularly advantageous if the

Fahrzeuginsasse seinen Sicherheitsgurt nicht angelegt hat und somit nicht zusätzlich durch den Sicherheitsgurt rückgehalten wird. Vehicle occupant has not put on his seat belt and thus is not additionally retained by the seat belt.

Darüber hinaus ist der erfindungsgemäße Airbag schnell und einfach an unterschiedliche Fahrzeuge, insbesondere Instrumententafeln, anbringbar. Dabei kann der Airbag, insbesondere hinsichtlich seiner Breite und/oder hinsichtlich der Ausgestaltung und Anordnung der Volumenelemente, besonders zeit- und kostengünstig an unterschiedliche Bedingungen im Innenraum des entsprechenden Fahrzeugs angepasst werden. Des Weiteren ist der erfindungsgemäße Airbag besonders einfach und kostengünstig herstellbar, da die Stützstruktur beispielsweise einfach zugeschnitten werden kann. In addition, the airbag according to the invention is quickly and easily attachable to different vehicles, in particular instrument panels. In this case, the airbag, in particular in terms of its width and / or in terms of the design and arrangement of the volume elements, particularly time and cost to be adapted to different conditions in the interior of the corresponding vehicle. Furthermore, the airbag according to the invention is particularly simple and inexpensive to produce, since the support structure can be easily cut, for example.

Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung bevorzugter Ausführungsbeispiele sowie anhand der Zeichnung. Die vorstehend in der Beschreibung genannten Merkmale und Further advantages, features and details of the invention will become apparent from the following description of preferred embodiments and from the drawing. The features mentioned above in the description and

Merkmalskombinationen sowie die nachfolgend in der Figurenbeschreibung genannten und/oder in den Figuren alleine gezeigten Merkmale und Merkmalskombinationen sind nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Feature combinations as well as the features and feature combinations mentioned below in the description of the figures and / or shown alone in the figures are not only in the respectively indicated combination but also in others

Kombinationen oder in Alleinstellung verwendbar, ohne den Rahmen der Erfindung zu verlassen. Combinations or alone, without departing from the scope of the invention.

Die Zeichnung zeigt in: The drawing shows in:

Fig. 1 eine schematische Draufsicht eines Airbags für einen Kraftwagen, mit einer Stützstruktur, welche eine Mehrzahl von Volumenelementen umfasst, wobei die Stützstruktur durch Beaufschlagen der Volumenelemente mit einem Medium, insbesondere Gas, aus einer Aufbewahrungsposition in die Rückhalteposition bewegbar ist; Figure 1 is a schematic plan view of an airbag for a motor vehicle, having a support structure comprising a plurality of volume elements, wherein the support structure is movable by loading the volume elements with a medium, in particular gas, from a storage position to the retention position.

Fig. 2 ausschnittsweise eine schematische Perspektivansicht eines Innenraums eines Kraftwagens mit dem Airbag, wobei sich die Stützstruktur in ihrer Rückhalteposition befindet; FIG. 2 shows a detail of a schematic perspective view of an interior of a motor vehicle with the airbag, the support structure being in its retaining position; FIG.

Fig. 3 eine schematische Draufsicht des Airbags gemäß Fig. 2; Fig. 4 ausschnittsweise eine weitere schematische Perspektivansicht desFIG. 3 is a schematic plan view of the airbag according to FIG. 2; FIG. 4 shows a detail of a further schematic perspective view of the

Innenraums mit dem Airbag; und Interior with the airbag; and

Fig. 5 ausschnittsweise eine schematische und perspektivische Außenansicht des Kraftwagens mit dem Airbag. Fig. 5 shows a detail of a schematic and perspective exterior view of the motor vehicle with the airbag.

Fig. 1 zeigt einen im Ganzen mit 10 bezeichneten Airbag für einen in Fig. 2 bis 5 ausschnittsweise erkennbaren und im Ganzen mit 11 bezeichneten Personenkraftwagen. Der Airbag 10 umfasst eine Stützstruktur 12, welche eine Mehrzahl von Fig. 1 shows a designated as a whole with 10 airbag for a in Figs. 2 to 5 partially recognizable and denoted as a whole by 11 passenger cars. The airbag 10 includes a support structure 12 which includes a plurality of

Volumenelementen 14, 16, 18 umfasst. Die Volumenelemente 14, 16, 18 sind dabei zumindest im Wesentlichen röhrenförmig und somit als Röhrenelemente ausgebildet. Die Volumenelemente 14, 16, 18 weisen ein jeweiliges Volumen auf, welches mit einem Medium und vorliegend Gas beaufschlagbar ist. Mit anderen Worten können die Volume elements 14, 16, 18 includes. The volume elements 14, 16, 18 are at least substantially tubular and thus formed as a tubular elements. The volume elements 14, 16, 18 have a respective volume, which is acted upon by a medium and gas in the present case. In other words, the

Volumenelemente 14, 16, 18 mit dem Gas beaufschlagt werden, indem das Gas in die jeweiligen Volumina eingeblasen wird. Volume elements 14, 16, 18 are acted upon by the gas by blowing the gas into the respective volumes.

Vorteilhafterweise sind die jeweiligen Volumina zumindest teilweise fluidisch miteinander verbunden. Vorzugsweise sind alle Volumina der Volumenelemente 14, 16, 18 fluidisch miteinander verbunden. Durch die fluidische Verbindung der einzelnen Volumina ist ein fluidisch zusammenhängendes Gesamtvolumen gebildet, welches mit dem Gas aufgeblasen werden kann. Durch das Aufblasen des Gesamtvolumens und somit durch Beaufschlagen der Volumenelemente 14, 16, 18 mit dem Gas wird die Stützstruktur 12 aus einer Aufbewahrungsposition in eine in Fig. 2 bis 5 erkennbare Rückhalteposition bewegt. In der Rückhalteposition ist ein Rückhaltevolumen 20 des Airbags 10 zumindest teilweise von der Stützstruktur 12 umgeben. Advantageously, the respective volumes are at least partially fluidly connected to each other. Preferably, all volumes of the volume elements 14, 16, 18 are fluidly connected to each other. Due to the fluidic connection of the individual volumes, a fluidically coherent total volume is formed, which can be inflated with the gas. By inflating the total volume and thus by pressurizing the volume elements 14, 16, 18 with the gas, the support structure 12 is moved from a storage position to a recognizable in Fig. 2 to 5 retention position. In the retention position, a retention volume 20 of the airbag 10 is at least partially surrounded by the support structure 12.

Das Aufblasen des Gesamtvolumens erfolgt mittels wenigstens eines Stellglieds in Form eines Gasgenerators des Airbags 10. Die Stützstruktur 12 kann dabei aufgrund der entsprechenden Ausgestaltung der Volumenelemente 14, 16, 18 und aufgrund ihrer fluidischen Verbindung miteinander besonders schnell aus der Aufbewahrungsposition in die Rückhalteposition bewegt werden und im Innenraum 22 des Personenkraftwagens 11 ein besonders großes Volumen einnehmen. Dadurch kann der Airbag 10 wenigstens einen Fahrzeuginsassen bei einer unfallbedingten Kraftbeaufschlagung des The inflation of the total volume by means of at least one actuator in the form of a gas generator of the airbag 10. The support structure 12 can be moved due to the corresponding configuration of the volume elements 14, 16, 18 and due to their fluid connection with each other particularly fast from the storage position to the retention position and in the interior 22 of the passenger car 11 occupy a particularly large volume. This allows the airbag 10 at least one vehicle occupant in an accidental force of the

Personenkraftwagens 1 1 und einer daraus resultierenden, unfallbedingten Verlagerung des Fahrzeuginsassen besonders gut auffangen, rückhalten und vor schwerwiegenden Verletzungen schützen. Durch die miteinander verbundenen Volumenelemente 14, 16, 18 ist eine Art Passenger car 1 1 and a resulting accidental displacement of the vehicle occupant catch particularly well, withhold and protect against serious injury. Through the interconnected volume elements 14, 16, 18 is a kind

Fachwerkstruktur der Stützstruktur 12 gebildet, weswegen der Airbag 10 auch als Fachwerkbag bezeichnet wird. Dabei stellen die Volumenelemente 14, 16, 18 jeweilige Strebenelemente der Fachwerkstruktur dar, zwischen denen Freiräume 24 bzw. Truss structure of the support structure 12 formed, which is why the airbag 10 is also referred to as a truss bag. The volume elements 14, 16, 18 represent respective strut elements of the truss structure, between which free spaces 24 and

Freiflächen gebildet sind. Mit anderen Worten sind die Freiräume 24 durch die Open spaces are formed. In other words, the free spaces 24 through the

Volumenelemente 14, 16, 18 begrenzt. Volume elements 14, 16, 18 limited.

Über Freiräume bzw. Durchströmöffnungen zwischen den Volumenelementen 14, 16, 18 kann ein gasförmiges Medium in Form von Luft aus dem Innenraum 22 in das About free spaces or flow openings between the volume elements 14, 16, 18, a gaseous medium in the form of air from the interior 22 in the

Rückhaltevolumen 20 einströmen. Dieses Befüllen des Rückhaltevolumens 20 mit Luft aus dem Innenraum 22 erfolgt dabei zumindest teilweise und vorzugsweise vollständig passiv. Beim Bewegen der Stützstruktur 12 aus der Aufbewahrungsposition in die Rückhalteposition wird das Rückhaltevolumen 20 sukzessive vergrößert. Dadurch entsteht im Rückhaltevolumen 20 ein Unterdruck, infolgedessen Luft aus dem Innenraum 22 in das Rückhaltevolumen 20 zumindest im Wesentlichen passiv eingesaugt wird. Dieses Befüllen des Rückhaltevolumens 20 mit Luft kann beispielsweise mittels wenigstens eines weiteren Stellglieds, insbesondere mittels wenigstens eines weiteren Gasgenerators, des Airbags 10 aktiv unterstützt werden. Retention volume 20 flow. This filling of the retention volume 20 with air from the interior 22 takes place at least partially and preferably completely passive. As the support structure 12 is moved from the storage position to the retention position, the retention volume 20 is successively increased. As a result, a negative pressure is created in the retention volume 20, as a result of which air from the interior 22 is sucked into the retention volume 20 at least substantially passively. This filling of the retention volume 20 with air can be actively supported, for example, by means of at least one further actuator, in particular by means of at least one further gas generator, of the airbag 10.

Der Airbag 10 umfasst auch eine Umhüllung 26, durch welches das Rückhaltevolumen 20 zumindest bereichsweise umgeben ist. Die Umhüllung 26 ist dabei zumindest teilweise im zwischen den Volumenelementen 14, 16, 18 angeordnet, so dass Freiräume zwischen den Volumenelementen 14, 16, 18 zumindest teilweise durch die Umhüllung 26 überdeckt sind. The airbag 10 also includes an enclosure 26, by which the retention volume 20 is at least partially surrounded. The sheath 26 is at least partially disposed in between the volume elements 14, 16, 18, so that free spaces between the volume elements 14, 16, 18 are at least partially covered by the sheath 26.

Die Umhüllung 26 weist Durchströmöffnungen 28 auf, über die die Luft aus dem The envelope 26 has flow openings 28 through which the air from the

Innenraum 22 bei der Bewegung der Stützstruktur 12 in die Rückhalteposition in das Rückhaltevolumen 20 einströmen kann. Interior 22 in the movement of the support structure 12 in the retention position in the retention volume 20 can flow.

Zur Realisierung einer besonders vorteilhaften Auffang- und Rückhaltefunktion sowie einer besonders schnellen Bewegung der Stützstruktur 12 aus der To realize a particularly advantageous collecting and retaining function and a particularly fast movement of the support structure 12 from the

Aufbewahrungsposition in die Rückhalteposition, weist die Stützstruktur einen Storage position in the retention position, the support structure has a

Basisbereich 30 auf, welcher auch besonders gut aus Fig. 5 erkennbar ist. Der Base region 30, which is also particularly well from Fig. 5 can be seen. Of the

Basisbereich 30 umfasst dabei die Volumenelemente 14. An den Basisbereich 30 schließt sich beidseitig ein jeweiliger Seitenbereich 32, 34 der Stützstruktur an, wobei der Seitenbereich 32 die Volumenelemente 18 und der Base region 30 includes the volume elements 14. A respective side region 32, 34 of the support structure adjoins the base region 30 on both sides, wherein the side region 32 encloses the volume elements 18 and the

Seitenbereich 30 die Volumenelemente 16 der Stützstruktur 12 umfasst. Wie aus Fig. 2 bis 5 erkennbar ist, erstrecken sich die Seitenbereiche 32, 34 in der Rückhalteposition der Stützstruktur 12 zumindest im Wesentlichen in Fahrzeuglängsrichtung nach hinten von dem Basisbereich 30 weg, wobei der Basisbereich 30 einer Windschutzscheibe 36 des Personenkraftwagens 11 zugewandt und in Stützanlage mit der Windschutzscheibe 36 bewegbar ist. Dabei kann vorgesehen sein, dass sich der Basisbereich 30 in der Side region 30, the volume elements 16 of the support structure 12 includes. As can be seen from FIGS. 2 to 5, in the retaining position of the support structure 12, the side regions 32, 34 extend rearwardly away from the base region 30 at least substantially in the vehicle longitudinal direction, the base region 30 facing a windshield 36 of the passenger car 11 and in support with the windshield 36 is movable. It can be provided that the base region 30 in the

Rückhalteposition der Stützstruktur 12 in Stützanlage mit der Windschutzscheibe 36 befindet. Retaining position of the support structure 12 is in support system with the windshield 36.

Die Seitenbereiche 32, 34 sind zumindest im Wesentlichen symmetrisch, insbesondere achsensymmetrisch, zueinander ausgebildet und stellen jeweilige Flügelelemente dar, welche sich von dem Basisbereich 30 wegerstrecken. Die Seitenbereiche 32, 34 erstrecken sich vorliegend schräg zur Fahrzeuglängsrichtung und in The side regions 32, 34 are at least substantially symmetrical, in particular axially symmetrical, to one another and form respective wing elements which extend away from the base region 30. The side regions 32, 34 extend in the present case obliquely to the vehicle longitudinal direction and in

Fahrzeuglängsrichtung von vorne nach hinten von dem Basisbereich 30 weg. Vorliegend sind Spannelemente in Form von Spannbändern 38 des Airbags 10 vorgesehen, um die Seitenbereiche 32, 34 in einer entsprechenden Ausrichtung zueinander zu halten. Vehicle longitudinal direction from the front to the rear of the base portion 30 away. In the present case, clamping elements in the form of tension bands 38 of the airbag 10 are provided in order to hold the side regions 32, 34 in a corresponding orientation relative to one another.

Anstelle der Spannbänder 38 kann auch die Umhüllung 26 vorgesehen werden, durch welche die Seitenbereiche 32, 34 dann in ihrer jeweiligen Ausrichtung zueinander gehalten werden. Dazu wird die Umhüllung 26 mit der Stützstruktur 12 entsprechend verbunden. Instead of the tension bands 38, the envelope 26 can also be provided, by which the side regions 32, 34 are then held in their respective orientation to one another. For this purpose, the envelope 26 is connected to the support structure 12 accordingly.

Die Volumenelemente 14 stellen Basisröhren des Basisbereichs 30 dar, welche nun - vom Innenraum 22 aus gesehen - auf bzw. vor der Windschutzscheibe 36 liegen. Ferner sind die Seitenbereiche 32, 34 zwischen dem Fahrzeuginsassen bzw. zwischen einem Sitzplatz für den Fahrzeuginsassen und dem Basisbereich 30 angeordnet. Dadurch können die Basisröhren nicht mit dem Fahrzeuginsassen bei dessen unfallbedingter Verlagerung interagieren, wenn der Fahrzeuginsasse auf die Stützstruktur 12 aufprallt. Dies führt zu einer besonders geringen Insassenbelastung, wenn dieser auf die The volume elements 14 represent base tubes of the base region 30, which now - seen from the interior 22 - on or in front of the windshield 36. Furthermore, the side regions 32, 34 are arranged between the vehicle occupant or between a seat for the vehicle occupant and the base region 30. As a result, the base tubes can not interact with the vehicle occupant in its accidental displacement when the vehicle occupant bounces on the support structure 12. This leads to a particularly low occupant load, if this on the

Stützstruktur 12 aufprallt, was auch als Eintauchen bezeichnet wird. Insbesondere kann die Belastung auf den Fahrzeuginsassen gering gehalten werden, wenn sich dieser in einer ungünstigen Position relativ zur Stützstruktur 2 befindet. Support structure 12 impacts, which is also referred to as immersion. In particular, the load on the vehicle occupant can be kept low if this is in an unfavorable position relative to the support structure 2.

Die Anordnung der Basisröhren des Basisbereichs 30 unterstützt auch eine Entfaltung, d.h. die Bewegung der Stützstruktur 12 aus der Aufbewahrungsposition in die Rückhalteposition, so dass eine besonders schnelle Befüllung des Rückhaltevolumens 20 erreicht wird. Die Basisröhren liegen dabei so vor der Windschutzscheibe 36, dass eine zusätzliche Schutzfunktion wie bei einem sogenannten Fenster-Airbag (Window-Bag) entsteht. Dabei können alle Strukturen eines sogenannten Window-Bags in den Airbag 10 integriert werden. The arrangement of the base tubes of the base portion 30 also facilitates deployment, ie, the movement of the support structure 12 from the storage position to the Retention position, so that a particularly fast filling of the retention volume 20 is achieved. The base tubes lie in front of the windscreen 36 so that an additional protective function as in a so-called window airbag (window bag) is formed. In this case, all structures of a so-called window-bag can be integrated into the airbag 10.

Claims

Patentansprüche claims Airbag (10) eines Kraftwagens (11), mit einer eine Mehrzahl von Volumenelementen (14, 16, 18) umfassenden Stützstruktur (12), welche durch Beaufschlagen der Volumenelemente (14, 16, 18) mit einem Medium aus einer Aufbewahrungsposition in eine Rückhalteposition bewegbar ist und in ihrer Rückhalteposition ein zumindest teilweise mit einem gasförmigen Medium gefülltes Rückhaltevolumen (20) des Airbags (10) zumindest bereichsweise umgibt, An airbag (10) of a motor vehicle (11), comprising a support structure (12) comprising a plurality of volume elements (14, 16, 18), which comprises pressurizing the volume elements (14, 16, 18) with a medium from a storage position to a retention position is movable and at least partially surrounds in its retaining position at least partially filled with a gaseous medium retention volume (20) of the airbag (10), dadurch gekennzeichnet, dass characterized in that die Stützstruktur (12) einen einen Teil der Volumenelemente (14, 16, 18) umfassenden Basisbereich (30) aufweist, welcher in der Rückhalteposition in Stützanlage mit einer Windschutzscheibe (36) des Kraftwagens (11) bewegbar ist und von welchem sich in der Rückhalteposition beidseitig ein jeweiliger, jeweils einen weiteren Teil der Volumenelemente (14, 16, 18) umfassender Seitenbereich (32, 34) der Stützstruktur (12) zumindest im Wesentlichen in Fahrzeuglängsrichtung nach hinten wegerstreckt. the support structure (12) comprises a base portion (30) comprising part of the volume elements (14, 16, 18) movable in support position with a windshield (36) of the motor vehicle (11) in the retention position and of which is in the retention position on both sides a respective, each a further part of the volume elements (14, 16, 18) comprehensive side region (32, 34) of the support structure (12) at least substantially wegerstreckt back in the vehicle longitudinal direction. Airbag (10) nach Anspruch 1 , Airbag (10) according to claim 1, dadurch gekennzeichnet, dass characterized in that sich der Basisbereich (30) in der Rückhalteposition in Stützanlage mit der the base portion (30) in the retention position in support system with the Windschutzscheibe (36) befindet. Windscreen (36) is located. Airbag (10) nach einem der Ansprüche 1 oder 2, Airbag (10) according to one of claims 1 or 2, dadurch gekennzeichnet, dass characterized in that die Seitenbereiche (32, 34) zumindest im Wesentlichen symmetrisch, insbesondere achsensymmetrisch, zueinander sind. the side regions (32, 34) are at least substantially symmetrical, in particular axially symmetric, to one another. Airbag (10) nach einem der vorhergehenden Ansprüche,  Airbag (10) according to one of the preceding claims, dadurch gekennzeichnet, dass der Basisbereich (30) zumindest im Wesentlichen in der Mitte zwischen den Seitenbereichen (32, 34) angeordnet ist. characterized in that the base region (30) is arranged at least substantially in the middle between the side regions (32, 34).
PCT/EP2013/002969 2012-10-11 2013-10-02 Airbag for a motor vehicle Ceased WO2014056585A1 (en)

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DE201210019900 DE102012019900A1 (en) 2012-10-11 2012-10-11 Airbag for motor vehicle e.g. passenger car, has volume elements that are provided with side regions of supporting structure which is extended to rear portion along longitudinal direction
DE102012019900.7 2012-10-11

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Publication number Priority date Publication date Assignee Title
DE102014001952B4 (en) * 2014-02-12 2019-01-24 Daimler Ag Occupant protection device for a vehicle and vehicle
FR3062444B1 (en) * 2017-02-02 2020-04-03 Technip France METAL STRUCTURE FOR SUPPORTING FLUIDIC CONDUITS AND INDUSTRIAL INSTALLATION COMPRISING SUCH A METAL STRUCTURE

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040150200A1 (en) * 2003-01-30 2004-08-05 Toyoda Gosei Co., Ltd. Airbag
DE102007052246A1 (en) 2007-11-02 2009-05-07 Daimler Ag Airbag, in particular for a motor vehicle
DE102008012137A1 (en) * 2008-03-01 2009-09-10 Daimler Ag air bag
WO2011099158A1 (en) * 2010-02-15 2011-08-18 トヨタ自動車株式会社 Airbag device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040150200A1 (en) * 2003-01-30 2004-08-05 Toyoda Gosei Co., Ltd. Airbag
DE102007052246A1 (en) 2007-11-02 2009-05-07 Daimler Ag Airbag, in particular for a motor vehicle
DE102008012137A1 (en) * 2008-03-01 2009-09-10 Daimler Ag air bag
WO2011099158A1 (en) * 2010-02-15 2011-08-18 トヨタ自動車株式会社 Airbag device

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