WO2013034229A1 - Coussin gonflable de sécurité, en particulier pour un véhicule automobile - Google Patents

Coussin gonflable de sécurité, en particulier pour un véhicule automobile Download PDF

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Publication number
WO2013034229A1
WO2013034229A1 PCT/EP2012/003365 EP2012003365W WO2013034229A1 WO 2013034229 A1 WO2013034229 A1 WO 2013034229A1 EP 2012003365 W EP2012003365 W EP 2012003365W WO 2013034229 A1 WO2013034229 A1 WO 2013034229A1
Authority
WO
WIPO (PCT)
Prior art keywords
support structure
airbag
retention volume
retention
energy
Prior art date
Application number
PCT/EP2012/003365
Other languages
German (de)
English (en)
Inventor
Ralf Bogenrieder
Christian Burczyk
Andreas Hirth
Friedrich Reiter
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 WO2013034229A1 publication Critical patent/WO2013034229A1/fr

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
    • 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
    • B60R21/2646—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 the reacting substances being supported by the inflatable member walls, or by a flexible support within it
    • 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

  • Airbag in particular for a motor vehicle
  • the invention relates to an airbag, in particular for a motor vehicle specified in the preamble of claim 1.
  • DE 10 2007 052 246 A1 discloses an airbag, in particular for a motor vehicle, having a support structure, which can be moved from a storage position into a retention position. By the support structure, a retention volume of the airbag is at least partially surrounded in its retention position.
  • the internal pressure prevailing in the retention volume plays a not insignificant role.
  • Such an airbag in particular for a motor vehicle, comprises a support structure which has a plurality of hollow body parts.
  • the support structure is made of a
  • a retention volume of the airbag is at least partially surrounded in its retention position.
  • Residual volume located gas in particular air
  • the Energybeetzungselement is ignited in particular explosive.
  • Retention volume can be increased in comparison to the time prevailing before the ignition or before the activation of the Energybeetzungselements internal pressure.
  • the desired high internal pressure in the
  • immersion Retention volume already on impact of the occupant on the support structure, which is referred to as immersion, available. This means that the desired high internal pressure is not only caused by the immersion of the occupant, but is already available at or before the time of immersion.
  • the energy-applying element can be specifically arranged in the retention volume where the application of energy is advantageous for the retention effect of the airbag.
  • An energy and gas distribution in the retention volume can be omitted.
  • a particularly homogeneous energy input by means of the at least one Energybeetzungselements can be displayed, so that a desired position of the airbag or the support structure in a passenger compartment of the motor vehicle is not adversely affected by the activation or ignition of the Energybeetzleyungselements.
  • Another advantage of the Energybeaufschlagungselements is that the energization or the energy input into the gas in the retention volume can take place at least almost without time delay.
  • the airbag according to the invention also has the advantage that the energy input can take place efficiently and specifically, which benefits a particularly high degree of efficiency. Since, as indicated, the gas distribution can be omitted, the targeted affects
  • the airbag according to the invention has a very low weight, since no additional actuator such as a gas generator and thus no gas generator housing are provided and needed to energize and to display the desired high internal pressure in the retention volume. This also contributes to a low space requirement and low cost of the airbag.
  • a plurality of fibrous or thread-like, pyrotechnic Energybeetzschlagungs comprisen be provided for applying the gas with energy, wherein by the
  • Energybeetzschlagungs comprise a textile structure is formed.
  • the energizing elements are bonded together to form the textile structure.
  • an at least essentially three-dimensional fabric and / or a fleece and / or a net and / or a felt may be formed as the textile structure by the energy-applying elements.
  • the energizing elements are integrated in the support structure. They may, for example, be sewn into the support structure or sewn thereto.
  • the airbag according to the invention is particularly preferably designed as a so-called truss bag.
  • the support structure is at least substantially truss-like or truss-shaped.
  • the hollow body parts are at least substantially tubular, i. designed as tubular elements and act as struts designed as a truss structure
  • the hollow body parts are at least partially fluidly connected to each other. Preferably, all the hollow body parts are fluidly connected to each other. Due to the fluidic connection of the hollow body parts is a coherent
  • the total volume is much lower than the retention volume.
  • the support structure can be particularly fast, i. in a particularly short time as well as for the occupant especially gently from the
  • Free spaces or open spaces are formed between the hollow body parts of the truss structure, via which air, in particular ambient air, from the passenger compartment can flow into the retention volume during deployment of the support structure.
  • air in particular ambient air
  • the ambient air in contrast to the active loading of the hollow body parts with the gas passively flows into the retention volume.
  • a negative pressure arises in the retention volume, which draws the ambient air into the retention volume in a first flow direction.
  • the airbag comprises an enclosure, by means of which the retention volume in the retention position is at least partially surrounded.
  • the envelope has such a valve functionality, so that the ambient air with a particularly high mass flow in the first flow direction in the retention volume can flow in.
  • This valve functionality is represented by a valve device, for example, which can be integrated into the environment.
  • the valve device prevents the outflow of air into one of the first
  • valve device allows the outflow of air in the retention volume in the second flow direction against the flow only throttled. This means that the air with only a smaller mass flow from the
  • Retention volume can flow as the air in the first flow direction can flow into the retention volume or could.
  • the air in the retention volume can be acted upon by igniting the Energybeetzungselements with energy, whereby a particularly high internal pressure in the retention volume can be displayed.
  • Fig. 1 is a schematic representation of a support structure of an airbag for a
  • a motor vehicle in particular a passenger car, wherein by the support structure in its retaining position, a retaining volume of the airbag is at least partially limited and wherein the support structure in the Holding volume Energybeaufschlagungsetti are arranged, by means of which in the retention volume located air can be acted upon with energy;
  • Fig. 2 is a schematic view of another embodiment of
  • Fig. 3 is a schematic view of another embodiment of the
  • Fig. 1 shows a very schematic representation of a support structure 10 for an airbag of a motor vehicle, in particular a passenger car.
  • the support structure 10 is movable from a storage position to a retention position at or before an accidental application of force to the motor vehicle.
  • a retention volume of the airbag is at least partially surrounded by the support structure.
  • the support structure 10 includes, for example, a plurality of tube elements having respective volumes.
  • the volumes of the tube elements are fluidly connected to each other, so that thereby a coherent total volume is formed.
  • the support structure 10 is formed at least substantially truss-like or truss-shaped, wherein the tubular elements as struts of the truss structure
  • trained support structure 10 act. Open spaces or free spaces are formed between the tube elements (struts), via which ambient air from a passenger compartment of the motor vehicle can flow into the retention volume when the support structure 10 is moved into the retaining position.
  • Retention volume allowing air from the passenger compartment of the motor vehicle in the Retention volume is sucked. From this it can be seen that the introduction of the air into the retention volume is at least substantially passive, while the
  • Gas generator is active.
  • Thread-like, pyrotechnic Energybeetzschlagungsetti 12 are now arranged in the retention volume on the support structure 10, by means of which in
  • Residual volume located air can be acted upon with energy. This causes an increase in the pressure prevailing in the retention volume internal pressure.
  • the energizing elements 12 are designed as fuses or as detonating cords and arranged in a radial manner.
  • an energy input into the air in the retention volume can be effected, resulting in the increase of the internal pressure in the retention volume compared to the internal pressure, which prevails before the activation of the energizing elements 12.
  • a desired high internal pressure is already available in the retention volume when an occupant of the motor vehicle impacts the support structure 10.
  • the occupant can be collected particularly advantageous, retained and protected from serious injury.
  • FIG. 2 shows an alternative embodiment of the support structure 10 with the energy application elements 12 arranged on it in the retention volume, which are designed as detonating cords or as detonating cords.
  • FIG. 3 shows a further embodiment of the support structure 10 with the energy application elements 12 according to FIGS. 1 and 2.
  • Energybeetzschlagungs institute 12 also be formed at least substantially three-dimensional structures or three-dimensional structures such as a three-dimensional felt, a three-dimensional fabric or the like textile.
  • the plurality of thread-like energizing elements 12 are respectively connected or coupled to one another in terms of textile technology, so that they are a textile that is in the
  • the Energybeetzleyungsetti 12 can be sewn into the support structure 10, which may also be formed as a textile, and / or hung and / or arranged in any other way on the support structure 10.
  • the fuses or detonating cords can be arranged as needed and in the retention volume

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Air Bags (AREA)

Abstract

Coussin gonflable de sécurité, en particulier pour un véhicule automobile, qui comporte une structure de support (10) comprenant une pluralité de corps creux, pouvant être déplacée d'une position de stockage à une position de retenue et grâce à laquelle, dans sa position de retenue, un volume de retenue du coussin gonflable de sécurité est au moins partiellement entouré. Selon l'invention, au moins un élément d'application d'énergie (12) pyrotechnique, de type fibre ou fil, est placé sur la structure de support (10) dans le volume de retenue, un gaz se trouvant dans le volume de retenue étant destiné à être soumis à ladite énergie.
PCT/EP2012/003365 2011-09-08 2012-08-07 Coussin gonflable de sécurité, en particulier pour un véhicule automobile WO2013034229A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011112885.2 2011-09-08
DE201110112885 DE102011112885A1 (de) 2011-09-08 2011-09-08 Airbag, insbesondere für einen Kraftwagen

Publications (1)

Publication Number Publication Date
WO2013034229A1 true WO2013034229A1 (fr) 2013-03-14

Family

ID=45804921

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/003365 WO2013034229A1 (fr) 2011-09-08 2012-08-07 Coussin gonflable de sécurité, en particulier pour un véhicule automobile

Country Status (2)

Country Link
DE (1) DE102011112885A1 (fr)
WO (1) WO2013034229A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3913034A1 (de) * 1988-04-20 1989-11-02 Honda Motor Co Ltd Luftsackeinrichtung (air-bag) zum schutz eines fahrzeuginsassen
DE4126743A1 (de) * 1991-08-13 1993-02-18 Guenter Herrmann Aufprallschutzsystem
WO2001012475A1 (fr) * 1999-08-16 2001-02-22 Autoliv Development Ab Ensemble sac a gaz (airbag) avec generateur de gaz du type cordeau pour vehicule automobile
DE102007052246A1 (de) 2007-11-02 2009-05-07 Daimler Ag Airbag, insbesondere für einen Kraftwagen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3913034A1 (de) * 1988-04-20 1989-11-02 Honda Motor Co Ltd Luftsackeinrichtung (air-bag) zum schutz eines fahrzeuginsassen
DE4126743A1 (de) * 1991-08-13 1993-02-18 Guenter Herrmann Aufprallschutzsystem
WO2001012475A1 (fr) * 1999-08-16 2001-02-22 Autoliv Development Ab Ensemble sac a gaz (airbag) avec generateur de gaz du type cordeau pour vehicule automobile
DE102007052246A1 (de) 2007-11-02 2009-05-07 Daimler Ag Airbag, insbesondere für einen Kraftwagen

Also Published As

Publication number Publication date
DE102011112885A1 (de) 2012-03-29

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