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
  • B60R21/23138—Inflatable members characterised by their shape, construction or spatial configuration specially adapted for side protection
• • 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
  • B60R21/2334—Expansion control features
• • 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
  • B60R21/233—Inflatable members characterised by their shape, construction or spatial configuration comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other
  • B60R2021/23308—Inflatable members characterised by their shape, construction or spatial configuration comprising a plurality of individual compartments; comprising two or more bag-like members, one within the other the individual compartments defining the external shape of the bag
• • 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
  • B60R21/235—Inflatable members characterised by their material
  • B60R2021/23571—Inflatable members characterised by their material characterised by connections between panels
  • B60R2021/23576—Sewing

Definitions

• the invention relates to a gas bag for a vehicle occupant restraint system of a motor vehicle according to claim 1, an airbag according to claim 15 and a method for producing a vehicle occupant restraint system according to claim 23.
• a gas bag of a vehicle occupant restraint system from at least two layers of a gas bag material, for. B. a textile fabric to produce.
• the two layers are connected to one another via a seam running along their respective circumference, so that at least one inflatable chamber is created between the layers.
• the problem to be solved by the invention is to provide a gas bag which has a contour that dampens the impact as well as possible and yet is easy to produce.
• the gas bag is designed so that the seam runs in the vehicle mounted and inflated airbag along a plane which is oriented obliquely or transversely to a plane defined by the vehicle longitudinal and the vehicle height direction plane.
• the seam is thus a circumferential seam, by means of which the two layers (in particular in the form of at least approximately congruent airbag blanks) are connected to one another such that the chamber which is inflatable for the protection of the vehicle occupant is delimited by the layers, i. the chamber extends between the two layers.
• the seam can not only run in sections, but along the entire respective circumference of the two gas bag layers, i. the seam may be circumferentially formed so that it completely surrounds the inflatable chamber.
• the seam of the gas bag according to the invention runs obliquely or transversely relative to a peripheral seam of a conventional gas bag installed in the vehicle, which plane lies in a plane spanned by the vehicle longitudinal and vehicle height directions (eg in a side airbag or a curtain airbag mounted on or in a vehicle seat) ,
• the plane along which the seam extends although about an axis which is parallel to the vehicle height direction, with respect to the plane which is spanned by the vehicle longitudinal and vehicle height direction, rotated, but not about an axis which is parallel to the vehicle longitudinal direction points, tilted.
• the vehicle height direction but not the vehicle longitudinal direction runs parallel to the plane along which the seam extends.
• the seam extends obliquely or transversely to a plane along which a steering wheel rim of a steering wheel of the motor vehicle and / or a surface of the front passenger dashboard of the vehicle extends, wherein the gas bag e.g. integrated into the steering wheel of the vehicle.
• the gas bag e.g. integrated into the steering wheel of the vehicle.
• its effective thickness between the steering wheel or the passenger's dashboard and the vehicle occupant to be protected can already be predetermined via the position of the circumferential seam.
• the gas bag in addition to a first seam, which connects the first and the second layer together, at least one further seam, which also connects layers of the gas bag along a portion whose circumference.
• the two layers connected to one another via the second seam are in particular likewise the first and the second layer, so that the first and the second layer are connected to one another via the first seam along a first section and via the second seam along a second section of their respective circumference ,
• the second seam joins two further layers that are different from the first and second layers and spaced apart, for example, from the first and second layers.
• the further layers are respectively connected to the first and the second layer.
• the first and second seams are particularly at an angle to each other (ie, they extend along obliquely or transversely oriented planes) to define the contour of the inflated airbag.
• the first and the second seam (or all seams of the gas bag, connect the gas bag layers, if more than two such seams are present), for example, each extend along a plane which is oriented obliquely or transversely to the plane defined by the vehicle longitudinal and vehicle height direction is.
• the further seam (or at least one of the several further seams) runs in the conventional direction, ie parallel to a plane which is spanned by the vehicle longitudinal and the vehicle height direction.
• the first seam extends along a first plane transverse to a plane defined by the vehicle's longitudinal and vehicle height directions (or across a plane along which a steering wheel rim of a steering wheel of the motor vehicle and / or a surface of the passenger's dashboard of Vehicle), and the second seam extends along a second plane extending parallel to a plane spanned by the vehicle longitudinal and vehicle height directions (or oriented parallel to a plane along which a steering wheel rim of a steering wheel of the vehicle Motor vehicle and / or a surface of the front passenger dashboard of the vehicle extends).
• the first and second layers define a first chamber and the other two layers define a second chamber of the gas bag.
• the first and the second layer together with the other two layers define a (single) chamber of the gas bag.
• the first and second layers may have at least two obliquely or transversely oriented seams (the first and the at least one second seam) are joined together but still form a single chamber.
• the mutually obliquely or transversely extending seams creates a kind of twisting of the gas bag, whereby a gas bag contour is realized, in particular along the obliquely or transversely to the plane defined by the vehicle longitudinal and vehicle height direction (or obliquely or transversely to a plane along which a steering wheel rim of a steering wheel of the motor vehicle and / or a surface of the passenger dashboard of the vehicle extends) extending seam has a greater effective thickness compared to the rest of the gas bag.
• the gas bag has only a single inflatable chamber, the circumferential seam, as described, is oriented obliquely.
• first and the second layer of a one-piece, folded piece of material formed (butterfly design), wherein the folded-up portions of the piece of material by means of the seam along its circumference (outside the fold edge) are interconnected.
• first and the second layer are formed from initially separate pieces of material, which are then connected to one another via the seam.
• the gas bag may also have more than two (eg contiguous) layers which are interconnected via the seam.
• first and the second layer define a plurality of inflatable chambers, without additional, separate gas bag layers are provided, e.g. separating means (e.g., a tether) are interposed between the first and second layers.
• separating means e.g., a tether
• the seam by which the first and the second layer are joined together, is in particular a sewing seam.
• the seam is realized by a line-like adhesive bond.
• the gas bag according to the invention may comprise fastening means for connecting the gas bag to a gas generator for inflating the gas bag, which are arranged at a distance from the seam.
• the attachment means are formed by at least one opening in the first or second layer, the openings being e.g. are such that fastening bolts for fixing the gas generator to the gas bag can reach through them.
• the gas bag has a discharge opening arranged at a distance from the seam, via which the first and the second layer are connected to one another, via which gas can flow out of the gas bag into the environment.
• this outflow opening is arranged so that it points in the mounted airbag in the forward direction of travel.
• the gas bag according to the invention is z. B. in the form of a side airbag, which is to be arranged in particular in or on a vehicle seat or in or on a vehicle door, or in the form of a curtain airbag, in particular along a roof rail of the Vehicle is mounted and extending in the inflated state along a vehicle longitudinal side is formed.
• the invention in a second aspect, relates to a gas bag, with
• the gas bag extends in the inflated state along a main plane of extension.
• the seam extends along a plane that is oriented obliquely or transversely to the main plane of extension.
• the seam via which the first and the second layer are connected to each other, thus does not extend along a plane oriented perpendicular to the main direction of action of the gas bag like the seam of a conventional gas bag, but along a plane to which the main direction of action of the gas bag Gas bag is not vertical.
• the "main direction of action" of the gas bag is the direction in which the gas bag is intended to absorb mainly impact energy, the main direction of action coinciding with the direction in which the greatest force is to be expected on the vehicle occupants in a side or front impact.
• the main extension plane in a multi-chamber gas bag is determined by the plane of greatest expansion of the chamber which has the largest volume Door gas bag or curtain airbag) at least approximately along a plane spanned by the vehicle longitudinal and vehicle height directions, for example, the main plane of extension of a driver's gas bag approximately parallel to a vehicle rim of the steering wheel of the vehicle.
• the airbag deploys along a main deployment direction, wherein the seam through which the first and second layers are interconnected along at least a portion of their respective circumference, is not oriented perpendicular to the main deployment direction.
• main deployment direction of the airbag is meant the direction in which the airbag undergoes the greatest change in its extent during deployment In the case of a driver's gas bag, for example, the main unfolding direction is perpendicular to the plane of the steering wheel rim.
• the invention also relates to a method for manufacturing a vehicle occupant restraint device, according to which an airbag is provided, which has a first and second layer of a gas bag material, which are connected to each other via a seam along their respective (outer) circumference.
• the gas bag is arranged in the vehicle such that the seam extends along a plane which is oriented obliquely or transversely to a plane spanned by the vehicle longitudinal direction and the vehicle height direction.
• the invention also relates to a method for producing a gas bag, according to which a first and a second layer of a gas bag material are connected to each other via a seam along at least a portion of their respective circumference, wherein the first and the second layer are formed so that when arranging the Airbag in a vehicle such that the airbag unfolds between a vehicle occupant and a vehicle side structure, the seam extends along a plane which is oriented obliquely or transversely to a plane spanned by the vehicle longitudinal and the vehicle height direction.
• the first and the second airbag layer are provided in the form of blanks, which are connected to each other for the manufacture of the gas bag along its respective outer circumference.
• the blanks are designed (eg, not congruent or non-circular) that the gas bag (eg in the form of a side gas bag), like a conventional gas bag (ie a gas bag with conventional seam course) is arranged in the vehicle, the seam that connects the two gas bag layers together but extends obliquely to the plane defined by the vehicle longitudinal direction and the vehicle height direction and / or to the main extension plane of the gas bag.
• Figure 1 shows a conventional airbag
• FIG. 2 shows an airbag according to a first embodiment of the invention
• FIG. 3 shows an airbag according to a second embodiment of the
• Figure 5 is a schematic diagram of a fourth embodiment of the gas bag according to the invention.
• FIG. 6A u. 6B are views of a gas bag according to a fourth embodiment of the invention.
• Figure 7 is a side view of a gas bag according to a fifth embodiment of the invention.
• Fig. 8A u. 8B shows an airbag according to a sixth embodiment of the
• Figure 1 relates to a conventional side airbag 1, which extends in the inflated state shown between a vehicle side structure 10 and a vehicle occupant 20 to be protected.
• the vehicle occupant 20 is located on a vehicle seat, not shown, wherein the airbag 1 is integrated in particular in the vehicle seat or in a vehicle door of the vehicle side structure.
• the conventional airbag 1 has a first airbag layer 1 1 and a second airbag layer 12, which are interconnected by means of a peripheral seam 2, so that an inflatable chamber is formed between the layers 11, 12.
• the gas bag 1 is arranged and mounted in the vehicle such that the circumferential seam 2 is stretched along a plane which is spanned by the vehicle longitudinal direction and the vehicle height direction. runs, that is oriented perpendicular to the direction of action or parallel to the main plane of extension of the gas bag.
• the inflated gas bag has its greatest extent in the direction of the vehicle longitudinal axis.
• tethers or dart may be provided which limit the expansion of the airbag in the vehicle longitudinal direction and thereby cause a greater expansion of the inflated airbag in the vehicle transverse direction.
• FIG. 2 schematically shows an airbag 1 according to the invention which, like the airbag of FIG. 1, has two airbag layers 11, 12 which are connected to one another by means of a peripheral seam 2 which runs along a section of the circumference of the respective layer.
• the seam 2 does not run along a plane which is spanned by the vehicle longitudinal and vehicle height direction, but along a plane which is oriented at an angle ⁇ obliquely to this plane.
• the plane along which the seam 2 runs is, as it were, rotated relative to the plane spanned by the vehicle longitudinal and vehicle height directions by the angle ⁇ about an axis parallel to the vehicle height direction.
• the invention is not limited to a specific orientation of the seam obliquely to the conventional seam, but in principle any seam courses are conceivable obliquely to the plane defined by the vehicle longitudinal and vehicle height direction.
• the angle ⁇ may be ⁇ ° to 180 °.
• the plane along which the seam 2 extends may also be thought to be formed by the plane along which the conventional seam extends, ie, the plane spanned by the vehicle longitudinal and vehicle height directions, in addition to or alternatively to rotation about an axis in the vehicle height direction about an axis which is parallel to the vehicle longitudinal direction, and / or about an axis which is parallel to the vehicle transverse direction, are rotated.
• the pivot point about which the plane of the conventional seam is rotated does not have to lie on an axis of symmetry of the gas bag, but may also lie on its edge or outside of the gas bag, so that the invention generally relates to gas bags which form a connecting seam between the first and second layers extending along a plane which is oriented in any way obliquely or transversely to a plane defined by the vehicle longitudinal and vehicle height directions.
• FIG. 3 shows schematically that it is also possible to provide more than one circumferential seam which connects layers of the gas bag to one another, wherein the circumferential seams can be oriented differently.
• the gas bag 1 has a lower portion 13, the z. B. is formed as an inflatable chamber of the gas bag, and an upper portion 14, the z. B. forms a further chamber of the gas bag, on.
• the upper and lower sections 13, 14 may form a common chamber of the gas bag.
• the lower portion 13 is formed by the first and second layer 1 1, 12, which are interconnected along a first circumferential seam 2.
• the peripheral seam 2 runs parallel to a plane which is spanned by the vehicle longitudinal and vehicle height directions.
• the upper portion 14 of the airbag 1 is formed by two further layers 15, 16, which are interconnected via a second circumferential seam 3. It is conceivable that the gas bag layers 1 1 and 15 and 12 and 16 are integrally formed with each other, d. H. these layers each form a continuous layer.
• the second circumferential seam 3 extends along a plane opposite to the through
• Vehicle longitudinal and vehicle height direction formed plane, and thus relative to the first circumferential seam 2 is rotated by an angle ⁇ , so that the upper portion 14 of the airbag with respect to the lower airbag portion 13 is twisted as it were.
• FIGS. 4A to 4D show different views of a gas bag 1 according to the invention, which is based on the principle of FIG.
• FIG. 4A shows a sectional view through the upper portion 14 of the inflated side airbag 1 extending between the vehicle occupant 20 and the vehicle side structure 10.
• FIG. 4B shows a view of the gas bag 1 from the vehicle front
• FIG. 4C shows a side view of the vehicle side structure 10
• FIG. 4D shows a view of the gas bag from above.
• the gas bag 1 also has a lower portion 13, wherein the gas bag layers 1 1, 12 of the lower portion 13 along the first peripheral seam 2 and gas bag layers 15 and 16 of the upper portion 14 along the second peripheral seam 3 are interconnected.
• the upper section 14 has in the mounted gas bag to the vehicle roof and extends in particular along a backrest of a vehicle seat, on which the vehicle occupant to be protected is located.
• the first circumferential seam 2 is oriented along a plane which is spanned by the vehicle longitudinal direction and the vehicle height direction, while the second peripheral seam 3 extends along a plane which extends transversely to the plane spanned by the vehicle longitudinal and vehicle height directions.
• the second circumferential seam 3 extends along a plane which is oriented approximately parallel to the backrest of the vehicle seat.
• an inflatable upper chamber 17 is delimited by the gas bag layers 15 and 16 of the upper section 14 connected to one another by means of the peripheral seam 3.
• a gas generator 4 which is connected via fastening bolts (not shown), which pass through openings in the gas bag layer 15, with a vehicle structure (in particular a backrest of a vehicle seat).
• an outflow opening 5 is provided in the region of the upper chamber 17 of the gas bag, via which gas can flow out of the upper chamber into the environment.
• the outflow opening 5 is located in the airbag 16 facing the vehicle front and thus at a distance from the peripheral seam 3.
• the upper section 14 of the gas bag, ie the upper chamber 17, is separated from the lower region 13 of the gas bag via a separating seam 5, so that through the gas bag layers 1 1 and 12, which are interconnected via the first circumferential seam 2, another, lower chamber 18 is defined. Due to the different orientations of the first and the second circumferential seam 2, 3, the upper chamber 17 is rotated relative to the lower chamber 18.
• the upper chamber 17 has, as a result of the course of the peripheral seam 3, along a plane transverse to the vehicle longitudinal direction, i.
• the circumferential seam 2 extends along a plane which is spanned by the vehicle longitudinal and vehicle height direction.
• the lower chamber 18 has by the course of the seam 2 along the vehicle longitudinal direction their largest dimension.
• the seam 5, which separates the upper portion 14 of the gas bag from the lower portion 13, is optional. It is also conceivable that the upper and the lower portion of the gas bag form a common chamber. At least it is conceivable that the upper chamber 17 with the lower chamber 18 via overflow, z. B. in the form of an interruption of the seam 5, are in flow communication with each other.
• FIGS. 6A and 6B show a side view and a top view, respectively, of such a gas bag, the lower portion 13 of which is the first peripheral seam 2 running along a plane transverse to the plane spanned by the vehicle longitudinal and vehicle height directions and the upper one thereof Section 14, the second peripheral seam 3, which extends along the plane formed from the vehicle longitudinal direction and vehicle height direction has.
• the upper and lower sections 13, 14 of the gas bag in particular form a common chamber.
• the gas bag 1 has two gas bag layers 1 1, 12, which are connected to each other along a single circumferential circumferential seam 2, so that through the two gas bag layers 1 1, 12 and the peripheral seam. 2 a single chamber of the gas bag is limited.
• the gas bag layers 1 1, 12 and the circumferential circumferential seam 2 define a plurality of chambers of the gas bag, z. B. in that are provided between the layers 11, 12 release agent, for example in the form of a belt or a Abnä- hers, so that between the layers 11, 12, several inflatable chambers arise.
• the circumferential seam 2 extends according to the example of FIG. 7 in the inflated state of the gas bag 1 along a plane transverse to a plane defined by the vehicle longitudinal and vehicle height direction and parallel to the backrest of the vehicle seat on which the vehicle occupant to be protected is located , is oriented.
• FIGs 8A and 8B relate to a modification of the embodiment of Figure 7, wherein a section through the gas bag is shown.
• the gas bag 1 has fastening means in the form of two openings 11 1, 1 12 in the first gas bag layer 1 1, which serve to connect the gas bag 1 with a gas generator (not shown).
• the openings 1 1 1, 1 12 - based on the mounted state of the gas bag - arranged one above the other along the vehicle height direction.
• the openings 1 1 1, 1 12 and the reinforcing layer 1 13 are rotated, d. H. along an axis that is oblique to the vehicle height direction, arranged.

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

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Applications Claiming Priority (2)

Related Child Applications (1)

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ID=41428878

Family Applications (1)

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Citations (4)

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• 2009
  • 2009-04-28 DE DE200910019766 patent/DE102009019766A1/de not_active Ceased
• 2010
  • 2010-04-28 JP JP2012507730A patent/JP5798109B2/ja not_active Expired - Fee Related
  • 2010-04-28 EP EP13190470.8A patent/EP2695777B1/de not_active Not-in-force
  • 2010-04-28 EP EP10721727.5A patent/EP2424752B1/de not_active Not-in-force
  • 2010-04-28 RU RU2011146104/11A patent/RU2532446C2/ru not_active IP Right Cessation
  • 2010-04-28 CN CN201510497271.7A patent/CN105128808B/zh not_active Expired - Fee Related
  • 2010-04-28 CN CN201080018646.2A patent/CN102414053B/zh not_active Expired - Fee Related
  • 2010-04-28 WO PCT/EP2010/055709 patent/WO2010125099A1/de not_active Ceased
• 2011
  • 2011-10-25 US US13/317,641 patent/US8931801B2/en active Active
• 2015
  • 2015-08-19 JP JP2015161624A patent/JP6266569B2/ja active Active

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