WO2022243282A1 - Fahrzeuginsassenrückhaltesystem mit einem gassack - Google Patents
Fahrzeuginsassenrückhaltesystem mit einem gassack Download PDFInfo
- Publication number
- WO2022243282A1 WO2022243282A1 PCT/EP2022/063263 EP2022063263W WO2022243282A1 WO 2022243282 A1 WO2022243282 A1 WO 2022243282A1 EP 2022063263 W EP2022063263 W EP 2022063263W WO 2022243282 A1 WO2022243282 A1 WO 2022243282A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gas bag
- vehicle
- vehicle occupant
- airbag
- restraint system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/23—Inflatable members
- B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
- B60R21/232—Curtain-type airbags deploying mainly in a vertical direction from their top edge
-
- 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
- B60R2021/23161—Inflatable members characterised by their shape, construction or spatial configuration specially adapted for protecting at least two passengers, e.g. preventing them from hitting each other
Definitions
- the invention relates to a vehicle occupant restraint system with a gas bag.
- the object of the invention is to create a vehicle occupant restraint system that can also be used for seating positions that deviate from the classic arrangement.
- a vehicle occupant restraint system which has a curtain-like gas bag which is arranged in a folded state in a roof area of a vehicle and which extends through a vehicle interior and in front of two when fully inflated occupants sitting next to one another or between two occupants sitting next to one another in order to protect them, the airbag having a greater extent in an airbag longitudinal direction than in an airbag transverse direction.
- the gas bag has at least two fixing sections spaced apart in the longitudinal direction of the gas bag and spaced apart from a roof side area for roof-side attachment. Each of the fixing sections includes a gas inlet opening through which filling gas gets into the gas bag.
- the gas bag has at least two chambers that can be filled next to one another in the longitudinal direction of the gas bag, each chamber being assigned to a vehicle occupant and the outer wall of each chamber comprising a baffle surface for catching the assigned vehicle occupant.
- the gas bag should form an essentially stable structure in the vehicle interior, which hangs down from the roof area and makes it possible to catch at least two vehicle occupants at the same time.
- All chambers that can be filled have a volume that is suitable for catching a vehicle occupant, and the internal pressure of all chambers that can be filled must be selected such that the vehicle occupant can be sufficiently cushioned when they hit the impact surface.
- the two chambers that can be filled next to one another are advantageously structurally directly connected to one another in order to increase the inherent rigidity of the gas bag.
- this connection takes place via the outer wall of the chambers, which can be designed as a continuous fabric layer, e.g.
- the gas bag preferably has a single fixing section for each of the chambers that can be filled. It has proven to be sufficient to attach the airbag to the roof area exclusively via these fixing sections.
- the roof area here forms the surface of the vehicle roof, while the roof side area describes the transition from the actual roof to a vehicle side wall.
- the gas bag is therefore attached at a distance from the side walls of the vehicle.
- all chambers are usually filled at the same time. All fillable chambers can have the same shape and the same volume, but could also vary. This is to be adapted to the respective vehicle geometry at the discretion of the specialist.
- a gas bag transverse direction points perpendicularly to the gas bag longitudinal direction and to the vertical direction of the vehicle.
- the extent of the airbag along the airbag transverse direction is referred to here as the depth of the airbag.
- the depth of the gas bag perpendicular to the impact surface is selected to be greater than 25 cm, for example, in order to achieve high inherent stability of the gas bag when inflated.
- the front and rear of the airbag are aligned essentially parallel to the vertical direction of the vehicle when it is completely inflated.
- the gas bag is given a high degree of inherent stability in the filled state via the two fixing sections and the two adjacent fillable chambers, also with regard to twisting about the vertical axis of the vehicle.
- the airbag in the vehicle at such locations where it hangs at least essentially freely in the vehicle interior, since it does not have to be supported flat on a vehicle structure, e.g. a vehicle side wall, with a front surface opposite the impact surface.
- a front side and an opposite rear side of the gas bag can be positioned unsupported in the vehicle interior when the gas bag is completely inflated.
- the gas bag is arranged in such a way that the longitudinal direction of the gas bag lies in a vehicle transverse direction.
- the filled gas bag then extends essentially in a plane spanned by the vehicle transverse direction and the vehicle vertical direction.
- the impact surfaces are then aligned in such a way that the airbag can catch two vehicle occupants sitting next to each other during a forward displacement along the longitudinal direction of the vehicle.
- the filled airbag is arranged between vehicle seats facing each other, with two vehicle seats being arranged in parallel so that vehicle occupants sit opposite one another on opposite vehicle seats, with one chamber of the airbag that can be filled being located between two opposite vehicle seats. This arrangement is particularly advantageous for specific autonomous vehicles.
- the gas bag is used in conventional vehicles, with the gas bag being arranged, for example, in such a way that when inflated it extends in front of the front seats between the steering wheel and the instrument panel and the vehicle occupants. It is also possible to arrange the airbag in front of the rear seats so that it is positioned between the backrests of the seats in front and the vehicle occupants.
- the extension of the gas bag in the longitudinal direction of the gas bag can be so large that the fully filled gas bag is supported with its longitudinal sides on opposite vehicle components and thus further reduces twisting of the gas bag about the vertical direction of the vehicle.
- a fixed attachment of the gas bag to the vehicle components is not provided, so that the gas bag is also only attached via its fixing sections in this variant.
- the vehicle components can be side walls of the vehicle, for example.
- the longitudinal sides of the gas bag are located at opposite longitudinal ends of the gas bag and are preferably formed by specific support surfaces.
- a strip-shaped blank section can be provided, which is connected to the front and the back.
- the longitudinal sides also increase the depth of the gas bag at the outer edge of the gas bag, so that the gas bag offers sufficient depth to catch a vehicle occupant up to the longitudinal sides.
- the gas bag can have a modular structure, with a fillable chamber and a fixing section together forming a sub-unit and at least two sub-units being arranged next to one another in the longitudinal direction.
- all sub-units are shaped identically.
- the gas bag consists of two sub-units, but embodiments are also conceivable in which three or more sub-units are arranged next to one another.
- Each gas inlet opening of the gas bag is preferably assigned its own gas generator.
- the gas generator can be arranged in the immediate vicinity of the fixing section on the roof area and connected directly to the gas inlet opening.
- the internal pressure of all fillable chambers is preferably the same when fully inflated. If the chambers that can be filled have identical geometries, the same volume of gas is supplied to each chamber that can be filled.
- each fixing section merges into the fillable chamber via a neck forming an inlet channel, the necks of adjacent fillable chambers being spaced apart from one another.
- the height of the airbag along the vertical direction of the vehicle is preferably reduced to the height of the impact surface or a lower height in order to save filling volume in an area not required for catching the vehicle occupant.
- the airbag therefore only extends at the fixing sections up to the roof area.
- adjacent chambers that can be filled are in flow connection with one another. This allows gas exchange between the two fillable chambers.
- the flow connection can exist constantly.
- an inner partition with at least one overflow opening is arranged between two adjacent fillable chambers, the gas flow through the overflow opening being variable.
- the overflow opening can be opened or closed by means of a closing mechanism.
- the closure mechanism includes a pyrotechnic actuator, for example, which releases a tether that is arranged on a flap that closes the overflow opening.
- One possible application is to close the overflow opening to a chamber that can be filled when the vehicle seat assigned to this chamber that can be filled is not occupied. This ensures that the gas bag always behaves in the same way when catching a vehicle occupant, regardless of whether all the vehicle seats are occupied or not.
- a cut of a front side of the gas bag can be composed of several individual cut sections, with an excess of fabric compared to an area enclosed by a peripheral edge of the cut and with the impact surface a tether is fastened on the inside, so that an indentation is formed in the impact surface when the airbag is completely inflated.
- the vertical or horizontal pocket formed in this way is located in particular in the area in which the head is to be caught. Due to the shape of the cut parts, the front side has a three-dimensional shape that cannot be spread out flat overall.
- the gas bag with impact surfaces both on the front and on the back. This is advantageous, for example, if the airbag is used in an autonomously driving vehicle that can reverse its direction of travel, i.e. does not have a clear front end.
- tethers can be arranged arbitrarily at the discretion of the person skilled in the art.
- FIG. 1 shows a schematic representation of a vehicle occupant restraint system according to the invention with a gas bag in the fully inflated state;
- FIG. 2 shows a schematic perspective illustration of the airbag from FIG. 1 viewed from its rear side
- FIG. 3 shows a schematic representation of a cut of a front side of the airbag from FIG. 2;
- FIGS. 4 to 8 further cut sections of the gas bag from FIG.
- Figure 1 shows a vehicle occupant restraint system 10 with an airbag 12.
- the airbag 12 comprises two fillable chambers 14 arranged next to one another in a longitudinal direction L of the airbag.
- the gas bag 12 In a gas bag transverse direction Q perpendicular to the gas bag longitudinal direction L and to a vehicle vertical direction H, the gas bag 12 is delimited by two opposite front surfaces, which are referred to here as the front side 16 and rear side 18 (see also FIG. 2).
- each of the fillable chambers 14 has an impact surface 20 for catching an associated vehicle occupant (not shown).
- the airbag 12 is arranged in the vehicle such that when the airbag 12 is completely inflated, the longitudinal direction L of the airbag is aligned along a transverse direction QF of the vehicle.
- the gas bag transverse direction Q accordingly runs in a longitudinal direction LF of the vehicle.
- the vehicle is only indicated with a roof area 22 and two parallel side walls 24 .
- Each of the fillable chambers 14 merges at its upper end with respect to the vertical direction H of the vehicle into a fixing section 26 which is fixedly mounted on the roof area 22 .
- the fixing sections 26 of the individual chambers 14 that can be filled are attached to the roof area 22 at a distance from one another and all lie along the longitudinal direction L of the gas bag and thus here along the transverse direction QF of the vehicle.
- the points at which the fixing sections 26 are fastened to the roof area are spaced apart from a roof side area 27 which describes the transition from the roof area 22, ie the actual vehicle roof, to the vehicle side wall 24.
- the fixing sections 26 form the only fastening points of the gas bag 12 on the vehicle.
- Each fixing section 26 has a gas inlet opening 28 which is in flow connection with a gas generator 30 which, in the case of restraint, supplies filling gas for filling the respective fillable chamber 14 .
- the filling gas flows from the fixing section 26 first through a narrow neck 32 which forms an inlet channel and from there into an area which is widened with respect to the longitudinal direction L of the airbag and which has the impact surface 20 .
- the gas bag 12 unfolds essentially vertically downwards from the roof area 22 while it fills up completely.
- the front side 16 and the rear side 18 are aligned essentially parallel to the vertical direction H of the vehicle.
- the airbag 12 has two fillable chambers 14 that are located next to one another in the longitudinal direction L of the airbag, on each of which an impact surface 20 is formed and which is fixed to the roof area 22 via a neck 32 with its own fixing section 26, each of which has its own gas inlet opening 28 are.
- each of the chambers 14 that can be filled is assigned its own gas generator 30 .
- the two adjacent fillable chambers 14 are structurally directly connected to one another, here by the fabric layers that form the front 16 and the back 18 running continuously over both fillable chambers 14.
- the height of the gas bag 12 is reduced between the two necks 32 approximately to the height of the impact surface 20 .
- the airbag 12 therefore only extends in the area of the respective neck 32 up to the roof area 22.
- tethers (not shown) can be arranged inside the gas bag 12 in order to define the desired three-dimensional shape of the completely filled gas bag 12 .
- the two adjacent fillable chambers 14 are constantly connected in terms of flow.
- an inner partition wall 36 is provided, which is spanned in one of the vertical direction H of the vehicle and the transverse direction Q of the airbag and which has an overflow opening 38 .
- a closing mechanism not shown, via which the overflow opening 38 can be closed or opened in a targeted manner.
- the closure mechanism is connected to a pyrotechnic actuator via a tether, for example, which is triggered under certain conditions in a restraint situation and releases the tether so that the overflow opening 38 opens.
- the locking mechanism is connected to a control unit that receives signals from a seat occupancy sensor.
- the overflow opening 38 remains open when all of the vehicle seats assigned to the gas bag 12 are occupied by occupants. However, if one of the seats is not occupied, the overflow opening 38 is closed so that the gas bag 12 behaves the same in the event of an occupant impact, regardless of the seat occupancy.
- a depth of the gas bag 12, defined by the dimensions of the filled gas bag 12 in the gas bag transverse direction Q, is approximately constant here over the entire length of the gas bag 12 in the gas bag longitudinal direction L.
- a blank section 40 which defines the longitudinal sides 42 at the opposite longitudinal ends and the floor 44 of the gas bag 12 .
- This blank section 40 is strip-shaped and is shown in FIG. In the central part, which forms the floor 44 and the longitudinal sides 42 in the finished gas bag 12, the cut section 40 has essentially a constant width between opposite edges 46. The width is reduced at the longitudinal ends, which form the outside of the necks 32.
- FIG. 3 shows the front side 16 and FIG. 6 the back side 18, each as a blank before connection to the blank section 40.
- the peripheral edges of the front 16 and the back 18 are each connected to the opposite edges 46 of the cut section 40, for example sewn.
- the cut section 40 extends along the outer circumference of the gas bag 12 from a fixing section 26 via one of the longitudinal sides 42, the bottom 44 and the opposite longitudinal side 42 to the other fixing section 26.
- Another cut section 48 shown in Figure 8 connects the two fixing sections 26 on an upper side 50 of the gas bag 12 opposite the base 44.
- the depth of the gas bag is essentially determined by the distance between the two edges 46 of the cut section 40 in the area of the impact surfaces 20 and can thus be approximately constant over the length of the gas bag 12 .
- the rear side 18 is formed here by a single blank section that can be spread out flat, as FIG. 6 shows.
- the front side 16 is here composed of two blank sections 52, 54, which are shown in FIGS.
- the blank portion 52 defines the areas of the front face 16 forming the necks 32 on one side. Two projections 56 are formed on the opposite side.
- the cut section 54 defines on one side the area of the front side 16 adjoining the base 44 of the gas bag 12. Two projections 56 are also formed on the opposite side, all projections 56 having an identical geometric shape.
- the projections 56 of the cut section 52 are firmly connected at their peripheral edges to the projections 56 of the cut section 54, for example sewn.
- the projections 56 are located approximately in the middle of the respective impact surface 20 of a chamber 14 that can be filled.
- the projections 56 are connected to a tether (not shown), which is attached, for example, to the rear 18 and which pulls the excess material inwards.
- an indentation or pocket 58 is formed in the completely filled airbag 12 in the area of the impact surface 20 .
- These pockets 58 are placed to lie in the area where a vehicle occupant's head impacts the impact surface 20 to allow for a softer cushioning.
- the dimensions of the airbag 12 along the longitudinal direction L of the airbag are selected such that the longitudinal sides 42 can be supported on the side walls 24 of the vehicle. However, there is no fixed attachment, e.g., to the side walls 24 or the vehicle seats.
- the gas bag 12 hangs essentially freely in the vehicle interior when it is completely inflated.
- This arrangement is used, for example, in a vehicle in which four vehicle occupants are seated in pairs opposite one another, with two of the vehicle occupants sitting in the direction of travel and the other two vehicle occupants sitting against the direction of travel.
- the gas bag 12 is arranged on the roof area 22 in such a way that it unfolds between the vehicle occupants sitting opposite, with the impact surfaces 20 facing the vehicle occupants sitting in the direction of travel. In a case of restraint, the forward displacement of these vehicle occupants is stopped by the airbag 12 by being caught by the impact surfaces 20 .
- the gas bag 12 is used in a conventional vehicle in which all vehicle occupants are seated in the direction of travel.
- the gas bag 12 can be arranged on the roof area 22 in front of the occupants on the front seats and unfold between them and the steering wheel or the instrument panel.
- the airbag 12 is placed in front of the rear seat occupants and deploys between them and the seat backs of the front seats.
- the gas bag 12 can thus also be replaced in vehicles in which the vehicle seats can be rotated with respect to the vehicle longitudinal direction LF.
- Other uses would also be conceivable, in which case the gas bag longitudinal direction L does not necessarily have to coincide with the vehicle transverse direction QF.
- each fillable chamber 14 with a
- Fixing section 26 form a sub-unit 60, and any number of sub-units 60 can be lined up along the gas bag longitudinal direction L at the discretion of the person skilled in the art.
- the airbag 12 can therefore also be used in vehicles in which more than two vehicle occupants are seated next to one another.
- Vehicle occupant restraint system 10 created that offers good protection of the vehicle occupants for different seat orientations.
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- Mechanical Engineering (AREA)
- Air Bags (AREA)
Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202280046986.9A CN117615941A (zh) | 2021-05-19 | 2022-05-17 | 具有安全气囊的车辆乘员约束系统 |
| US18/562,000 US12296774B2 (en) | 2021-05-19 | 2022-05-17 | Vehicle-occupant-restraint system comprising an airbag |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102021112982.6A DE102021112982A1 (de) | 2021-05-19 | 2021-05-19 | Fahrzeuginsassenrückhaltesystem mit einem Gassack |
| DE102021112982.6 | 2021-05-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2022243282A1 true WO2022243282A1 (de) | 2022-11-24 |
Family
ID=82020821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2022/063263 Ceased WO2022243282A1 (de) | 2021-05-19 | 2022-05-17 | Fahrzeuginsassenrückhaltesystem mit einem gassack |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US12296774B2 (de) |
| CN (1) | CN117615941A (de) |
| DE (1) | DE102021112982A1 (de) |
| WO (1) | WO2022243282A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102023110682A1 (de) * | 2023-04-26 | 2024-10-31 | Zf Automotive Germany Gmbh | Gassack, Gassackmodul, Fahrzeuginsassensicherheitssystem und Fahrzeug |
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| US11845392B1 (en) * | 2022-06-30 | 2023-12-19 | Ford Global Technologies, Llc | Airbag surrounding seatback of vehicle seat |
-
2021
- 2021-05-19 DE DE102021112982.6A patent/DE102021112982A1/de active Pending
-
2022
- 2022-05-17 WO PCT/EP2022/063263 patent/WO2022243282A1/de not_active Ceased
- 2022-05-17 CN CN202280046986.9A patent/CN117615941A/zh active Pending
- 2022-05-17 US US18/562,000 patent/US12296774B2/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29916526U1 (de) * | 1999-09-20 | 2000-02-17 | Trw Repa Gmbh | Fahrzeuginsassen-Rückhaltevorrichtung |
| DE10115064A1 (de) * | 2001-03-27 | 2002-11-21 | Volkswagen Ag | Sicherheitseinrichtung für die Insassen eines Kraftfahrzeugs |
| DE20208240U1 (de) * | 2002-05-27 | 2002-10-02 | Trw Repa Gmbh | Rückhaltevorrichtung für Fahrzeuginsassen |
| DE602004008546T2 (de) * | 2003-07-31 | 2008-05-21 | Takata Corp. | Fahrzeuginsassen-Schützsystem |
| US20050052004A1 (en) * | 2003-09-09 | 2005-03-10 | Trw Vehicle Safety Systems Inc. | Inflatable windshield curtain |
| DE102016104896A1 (de) * | 2015-03-31 | 2016-10-06 | Ford Global Technologies, Llc | Fahrzeugaufprallabsorptionssystem |
| DE102018200650A1 (de) * | 2018-01-16 | 2019-07-18 | Ford Global Technologies, Llc | Kraftfahrzeug mit Kopf-/Schulter-Airbags |
| DE102019126749A1 (de) * | 2019-10-04 | 2021-04-08 | Zf Automotive Germany Gmbh | Insassenrückhalteeinrichtung sowie Fahrzeug mit einer solchen Insassenrückhalteeinrichtung |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117615941A (zh) | 2024-02-27 |
| DE102021112982A1 (de) | 2022-11-24 |
| US12296774B2 (en) | 2025-05-13 |
| US20240239292A1 (en) | 2024-07-18 |
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