WO2008019725A1 - Rückhaltesystem für ein kraftfahrzeug - Google Patents
Rückhaltesystem für ein kraftfahrzeug Download PDFInfo
- Publication number
- WO2008019725A1 WO2008019725A1 PCT/EP2007/005557 EP2007005557W WO2008019725A1 WO 2008019725 A1 WO2008019725 A1 WO 2008019725A1 EP 2007005557 W EP2007005557 W EP 2007005557W WO 2008019725 A1 WO2008019725 A1 WO 2008019725A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- restraint system
- support structure
- gas
- support structures
- support
- Prior art date
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
- B60R21/23—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
-
- 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
- B60R21/239—Inflatable members characterised by their venting means
Definitions
- the invention relates to a restraint system for a motor vehicle according to the preamble of patent claim 1.
- the gas cushion quickly reaches its effective volume.
- gas e.g. pyrotechnic
- occupant and / or vehicle parameters have recently been evaluated in order, for example, to prevent the gas bag from developing to full size by gas volume reduction in the case of so-called "out-of-position" of the occupant conceivable load cases and the relatively costly control technology.
- German Offenlegungsschrift 2 302 737 has disclosed a restraint system comprising a two-layered gas bag, in which the gas is conducted only between the two layers, so that there is no complete gas cushion, but rather a spherical ring-shaped supporting structure. The unfolding of the support structure takes place in the transverse direction of the adjoining gas cushion.
- EP 0589 059 B1 shows that, when unfolding the two-layer gas bag, it is necessary to suck ambient air into the interior in order to overcome the negative pressure.
- GB 1 420 226 A shows a restraint system for a motor vehicle in that a tubular support structure is provided in the interior of the two-layered gas cushion, the longitudinal extent of which in the inflated, that is to say active, state exceeds the dimensions of the transverse extent.
- the support structure unfolds due to their special geometry mainly in the direction of their longitudinal extent.
- the support structure is filled with gas, wherein it is irrelevant whether it is filled with pyrotechnically produced gas or with gas from a pressure vessel or the ambient air.
- the ambient air can be passed by suction through the negative pressure occurring during deployment into the carrying volume enveloped by the support structure. In this way, the gas volume can be further reduced.
- a restraint system can be formed, which is constructed in a network, tree or structure-like manner.
- support structures running in the vehicle longitudinal direction can be connected to support structures running to the vehicle transverse direction. The unfolding of the transverse support structures nevertheless takes place in the direction of the longitudinal extent of the respective support structure.
- the support structures may be interconnected by flexible sheets, in particular textile flexible sheets. If this is the case, so can between two adjacent support structures, the flexible sheet are clamped.
- the gas can be used in the support volume enveloped thereby for the retention effect.
- the gas in the carrying volume used to restrain occupants may be heated by means of a heating device (e.g., a squib or a small gas generator stage that develops heat with possibly a very small volume of gas).
- a heating device e.g., a squib or a small gas generator stage that develops heat with possibly a very small volume of gas.
- the gas flowing into the support structure can be redistributed to other adjacent support structures or into the environment with the aid of redistribution means. It is also conceivable that the internal pressure generated by the afterflow is reduced in the support structure by a cross-sectional increase of the support structure. This can be done so that tear seams fail at a certain pressure, so that the support structure can enlarge in its transverse direction. It is also conceivable a pressure relief valve that opens when an excessive internal pressure is reached.
- this contact surface and thus the seal in persons with a larger volume (and thus usually larger weight) larger, so that in this way a stronger retention effect is achieved.
- the contact surface and thus the retention effect is also increased by a greater immersion of the occupant in the airbag.
- This principle also allows a different air bag damping for strapped and unguarded passengers, since in unguarded case, the occupant will dive less strongly in the airbag.
- outflow openings are formed as perforations, that is to say as many small openings, as for example in the case of a fabric net, a projection surface corresponding to the dimensions of the occupant can be closed. With many small outflow openings, the reproducibility of the results increases on average.
- At least one of the support structures extends at least partially into coverage of a hard structure, such as a support column. It is also possible to provide a support structure that unfolds between the occupants as an interaction bag.
- the one-piece-woven technique is recommended. This technique is characterized in that on one and the same device, if necessary, double-layered for the inflatable components and single-layered for the flexible Sheet can be made or a three-dimensional structure can be woven.
- Fig. 1 shows a support structure shortly after activation of a
- FIG. 3 shows the support structure according to FIG. 1 in the completely unfolded state
- FIG. 4 shows a restraint system with a complex one
- Support structure and Fig. 5 two interconnected by a flexible sheet supporting structures.
- Figures 1 to 3 show a schematic side view of a support structure 1, which is rolled up in the deactivated state. Alternatively, a zigzag folding or other folds is possible.
- the length L of the support structure in the active state substantially exceeds the dimensions of the cross section Q. It is irrelevant which cross-sectional shape has the support structure 1.
- the abruptly occurring gas G enters the interior space 3 of the support structure 1 formed by walls 2.
- the deployment of the support structure in the direction of their longitudinal extent causes. Since the gas G in the elongate support structure 1 can propagate only from the rear to the front, the still rolled-up portion 4 of the support structure 1 is displaced in the flow direction and thereby rolls off.
- the support structure 1 is extremely unstable with respect to acting transverse forces, so that when hitting the obstacle of the not yet unfolded portion is simply clamped at the designated 6 position.
- the support structure does not achieve the stability it would have at full deployment and / or the final volume or extent so that the load values on the occupant are substantially reduced.
- the support structure 1 can be deflected (compare FIG. 2b). Again, during deployment, the support structure does not achieve the stability it would have upon complete deployment.
- FIG. 4 shows a restraint system consisting of two support structures 7, 8 extending in the vehicle longitudinal direction and a support structure 9 extending in the vehicle transverse direction is formed.
- the three support structures 7, 8, 9 are fluidically connected to each other, so that after activation first the support structure 7, 8 along its longitudinal extent and then the support structure 9 also unfolds in its longitudinal extent.
- the occupant 10, which is virtually enclosed by the support structures 7, 8, 9, can be protected against lateral forces by the arrangement, even in the event of an oblique impact.
- a flexible sheet 11 can be stretched, so that, for example, in four funnel-shaped arranged support structures, an inner space 12 is enclosed.
- the gas in the interior space 12 may be heated by a heater (e.g., a squib or small gas generator stage that develops heat with possibly a very small volume of gas) so that the gas expands and the system hardens.
- a heater e.g., a squib or small gas generator stage that develops heat with possibly a very small volume of gas
- a second embodiment is shown in which the transverse support structure is missing.
- the arrangement of the support structures in cooperation with the flexible fabrics is largely determined by the position of the restraint system within the vehicle and the expected load cases.
- the support-like arrangement for a side impact protection will be designed differently for reasons of space, as support structures for the frontal impact.
- the fact is that with the elongated support structures, a large number of positions in the vehicle can be achieved, to which conventional gas bags can not reach due to the gas volume required for this purpose.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Bags (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN200780030503.1A CN101506006B (zh) | 2006-08-14 | 2007-06-23 | 机动车约束*** |
US12/377,529 US8317223B2 (en) | 2006-08-14 | 2007-06-23 | Restraint system for a motor vehicle |
JP2009524085A JP4928609B2 (ja) | 2006-08-14 | 2007-06-23 | 車両用拘束システム |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006038124.6A DE102006038124B4 (de) | 2006-08-14 | 2006-08-14 | Rückhaltesystem für ein Kraftfahrzeug |
DE102006038124.6 | 2006-08-14 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2008019725A1 true WO2008019725A1 (de) | 2008-02-21 |
Family
ID=38513738
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2007/005557 WO2008019725A1 (de) | 2006-08-14 | 2007-06-23 | Rückhaltesystem für ein kraftfahrzeug |
Country Status (5)
Country | Link |
---|---|
US (1) | US8317223B2 (de) |
JP (1) | JP4928609B2 (de) |
CN (1) | CN101506006B (de) |
DE (1) | DE102006038124B4 (de) |
WO (1) | WO2008019725A1 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008014442A1 (de) | 2008-03-14 | 2009-09-17 | Daimler Ag | Airbagsystem mit wiederholt einsetzbarer oder regenerierbarer/austauschbarer Gasquelle |
DE102008057376A1 (de) | 2008-11-14 | 2010-05-20 | Daimler Ag | Luftsack mit kanalförmigem Verschlusselement |
DE102009021854A1 (de) | 2009-05-19 | 2010-11-25 | Daimler Ag | Airbag mit eingewebten Funktionselementen |
DE102011112883A1 (de) * | 2011-09-08 | 2013-03-14 | Daimler Ag | Airbag, insbesondere für einen Kraftwagen |
US20130088056A1 (en) * | 2011-10-11 | 2013-04-11 | Zodiac Aerospace | Tubular airbag |
Citations (8)
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DE2158341A1 (de) * | 1970-11-24 | 1972-05-25 | Asahi Kasei Kogyo K.K., Osaka (Japan) | Schutzkissen zum Abfangen von Stoßen bei Auffahrunfällen |
DE2302737A1 (de) * | 1972-01-19 | 1973-08-09 | Poudres & Explosifs Ste Nale | Sicherheitsvorrichtungen mit aufblasbarem kissen zum schutz bei aufeinanderfolgenden kollisionen |
GB1420226A (en) * | 1972-01-19 | 1976-01-07 | Poudres & Explosifs Ste Nale | Safety device with an inflatable cushion especially for automobiles |
US4076277A (en) * | 1974-12-09 | 1978-02-28 | Nippon Soken, Inc. | Gas column type air bag system |
EP0589059B1 (de) * | 1992-04-08 | 1996-07-03 | Daicel Chemical Industries, Ltd. | Airbag mit doppelwandigem Aufbau |
US5542695A (en) * | 1993-12-28 | 1996-08-06 | R. Stresau Laboratory, Inc. | Air bag deployment system |
WO1999065737A2 (de) * | 1998-06-15 | 1999-12-23 | Hirtenberger Präzisionstechnik Gmbh | Airbagsystem für kraftfahrzeug |
EP1477372A1 (de) * | 2003-05-14 | 2004-11-17 | Delphi Technologies, Inc. | Sicherheitseinrichtung |
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2006
- 2006-08-14 DE DE102006038124.6A patent/DE102006038124B4/de active Active
-
2007
- 2007-06-23 WO PCT/EP2007/005557 patent/WO2008019725A1/de active Application Filing
- 2007-06-23 US US12/377,529 patent/US8317223B2/en active Active
- 2007-06-23 JP JP2009524085A patent/JP4928609B2/ja active Active
- 2007-06-23 CN CN200780030503.1A patent/CN101506006B/zh active Active
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2158341A1 (de) * | 1970-11-24 | 1972-05-25 | Asahi Kasei Kogyo K.K., Osaka (Japan) | Schutzkissen zum Abfangen von Stoßen bei Auffahrunfällen |
DE2302737A1 (de) * | 1972-01-19 | 1973-08-09 | Poudres & Explosifs Ste Nale | Sicherheitsvorrichtungen mit aufblasbarem kissen zum schutz bei aufeinanderfolgenden kollisionen |
GB1420226A (en) * | 1972-01-19 | 1976-01-07 | Poudres & Explosifs Ste Nale | Safety device with an inflatable cushion especially for automobiles |
US4076277A (en) * | 1974-12-09 | 1978-02-28 | Nippon Soken, Inc. | Gas column type air bag system |
EP0589059B1 (de) * | 1992-04-08 | 1996-07-03 | Daicel Chemical Industries, Ltd. | Airbag mit doppelwandigem Aufbau |
US5542695A (en) * | 1993-12-28 | 1996-08-06 | R. Stresau Laboratory, Inc. | Air bag deployment system |
WO1999065737A2 (de) * | 1998-06-15 | 1999-12-23 | Hirtenberger Präzisionstechnik Gmbh | Airbagsystem für kraftfahrzeug |
EP1477372A1 (de) * | 2003-05-14 | 2004-11-17 | Delphi Technologies, Inc. | Sicherheitseinrichtung |
Also Published As
Publication number | Publication date |
---|---|
DE102006038124A1 (de) | 2008-02-21 |
CN101506006B (zh) | 2014-03-12 |
CN101506006A (zh) | 2009-08-12 |
US8317223B2 (en) | 2012-11-27 |
JP4928609B2 (ja) | 2012-05-09 |
JP2010500222A (ja) | 2010-01-07 |
US20100259034A1 (en) | 2010-10-14 |
DE102006038124B4 (de) | 2019-05-23 |
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