DE102019124091A1 - Airbag assembly for a vehicle occupant restraint system - Google Patents

Abstract

The invention relates to an airbag arrangement (100) for a seat-based vehicle occupant restraint system, with at least a first and a second airbag (120, 140) that is inflatable to protect a vehicle occupant (P). The at least one first and second gas bag (120, 140) are each to be arranged on a vehicle seat (S). When the gas bags (120, 140) are inflated, an overlap section (122) of the first gas bag (120) overlaps an overlap section (142) of the second gas bag (140).

Description

The invention relates to an airbag arrangement. It also relates to a vehicle occupant restraint system and a vehicle seat each comprising such an airbag arrangement.

Vehicle seats often allow a user a variety of positioning options, for example in relation to an angle of inclination of a backrest or other seat parts or in relation to a displacement of the vehicle seat in the horizontal and vertical directions. In addition, various types of positioning options are often provided to a user in vehicles of different vehicle classes, such as cars, passenger ships, or trains. There is also a need for further positioning options for a vehicle seat from various driving modes, such as autonomous driving.

A variety of positioning options for a vehicle seat make it more difficult to provide effective accident protection devices for vehicle occupants. In particular, in some seating positions, an occupant occupying the vehicle seat can no longer be ideally positioned relative to a restraint device, such as an airbag arrangement, mounted on the vehicle. In the event of a crash, the gas bag arrangement can only insufficiently or not develop its restraining effect.

The problem on which the invention is based is to create an airbag arrangement which can optimally protect a vehicle occupant located on a vehicle seat, regardless of the position or orientation of the vehicle seat in the event of a crash.

This problem is solved by an airbag arrangement with the features of claim 1. Further developments of the invention are specified in the dependent claims.

The gas bag arrangement according to the invention is then provided for a seat-based vehicle occupant restraint system and comprises at least a first and at least a second gas bag which is inflatable to protect the vehicle occupant. The first and the second gas bag are each to be arranged on a vehicle seat. The first and the second gas bag have an overlap section, the overlap section of the first gas bag overlapping with the overlap section of the second gas bag when the gas bags are inflated.

When the airbags are inflated, the second airbag can at least partially surround the first airbag in the region of the overlap sections of the first and second airbags. In addition, the second airbag can at least partially surround the first airbag with respect to an intended position of the vehicle occupant. When the gas bags are inflated, the overlap sections can be in front of the vehicle occupant (who is seated on the vehicle seat as intended) and in particular can be in (mechanical) contact with one another.

In this case, the gas bag arrangement can comprise connecting means by means of which the overlapping sections, when they approach each other, can be connected and (at least partially) are connected to one another or adhere to one another when the gas bags are inflated. The connecting means can e.g. a Velcro connector, a magnetic connector or an adhesive. A connecting means is understood to mean generalizing means which prevent the overlapping sections from moving away from one another. These include e.g. Surfaces with an increased coefficient of friction or intermeshable gas bag structures. In particular, it can also be provided that the connecting means can be separated from one another (only) along a predetermined direction by moving the connecting means.

The first gas bag and the second gas bag can each have a frontal section and a lateral (supply) section. The frontal section and the lateral section of an airbag can be formed by a single airbag chamber. In the state of the gas bag arrangement that is intended to be arranged on the vehicle seat and in the inflated state of the gas bags, the frontal section can extend in a plane that is essentially parallel to the seat width direction and to the longitudinal direction of the seat, and the lateral section can extend in a plane transverse to the seat width direction. The frontal section and the lateral section can thus extend at an angle to one another. The side section (in the intended state of the gas bag arrangement on a vehicle seat) is arranged between the backrest of the vehicle seat and the associated frontal section. For example, the lateral sections can each protrude from the backrest transversely to the seat width direction, so that they can extend to the left and right of an occupant seated on the vehicle seat as intended. The frontal section of the first (second) gas bag can then extend along the seat width direction in the direction of the lateral section of the second (first) gas bag. The frontal sections can at least partially overlap and form or encompass the overlap sections according to the invention.

When the gas bags are inflated, the frontal section can have a larger volume than the lateral section.

According to one embodiment, the first and / or the second gas bag can comprise at least two gas bag chambers which are fluidly connected to one another. Adjacent gas bag chambers are separated by a wall, but are in flow connection by means of a passage opening or overflow opening. At least one gas bag chamber can form the frontal section and at least one gas bag chamber can form the lateral section. The at least one gas bag chamber that forms the frontal section can have a larger volume than the at least one gas bag chamber that forms the lateral section.

The first airbag and / or the second airbag can (respectively) comprise a main chamber and a secondary chamber, the secondary chamber being fluidly connected to the corresponding main chamber. The secondary chamber can have a smaller volume than the main chamber when inflated. Furthermore, the main chamber can be used to form the frontal section, while the secondary chamber can be used to form the lateral section.

It is also conceivable that a plurality of gas bag chambers form the lateral section and are arranged in succession transversely to the seat width direction. Another gas bag chamber can then form the frontal section, for example. In this case (in the inflated state of the gas bags) the volume of all gas bag chambers that form the lateral section can be greater than the volume that forms the frontal gas bag chamber. It is also conceivable that several chambers each form the frontal and the lateral section.

One embodiment provides that at least one gas bag chamber is oriented essentially vertically and is elongated (for example as a tube). A vertical alignment is to be understood as an alignment which corresponds to the longitudinal direction of the seat in the gas bag arrangement when it is properly arranged on the vehicle seat. The longitudinal direction of the seat can essentially be regarded as corresponding to the longitudinal direction of the upper body of the occupant seated on the vehicle seat as intended. In particular, at least one of the gas bag chambers that form the lateral section of the first or second gas bag can be designed as a vertically aligned tube. The gas bag chamber (s) of the frontal section of the first or second gas bag can have a shape that deviates from the vertically extending tube shape.

According to one embodiment, the (tubular) gas bag chambers of a gas bag, in particular the lateral section of the gas bag, are arranged with respect to one another and fastened to one another in such a way that the gas bag chambers in the inflated state, viewed in a horizontal cross-sectional plane, follow one another (immediately) in a row and in particular along a curve extend. From the point of view of an occupant on the vehicle seat, the curvature can in particular be designed to be concave, so that there is a depression for receiving the upper body of the occupant.

An overflow opening can be provided between two (directly) adjacent gas bag chambers of the at least two gas bag chambers of a gas bag in order to fluidly connect the two adjacent gas bag chambers to one another. Due to the fluidic connection of gas bag chambers, these can be filled with gas by means of a single gas generator. For this purpose, one of the at least two gas bag chambers can have an inflow opening (inlet opening) via which gas from the gas generator can be introduced into the gas bag. The inflow opening can be designed with respect to the overflow opening of this gas bag chamber in such a way that gas generated by the gas generator flows out of the gas generator into the at least two gas bag chambers in succession. The inflow opening can, for example, be positioned such that the fluidically connected gas bag chambers and the gas generator are connected in a row, so that gas generated by the gas generator flows from the gas generator into the gas bag chamber closest to the gas generator (first gas bag chamber) and from there successively into the next (n) gas bag chamber (s), so that the individual gas bag chambers are successively filled with gas. The size of the overflow opening between two adjacent gas bag chambers can be dimensioned such that the maximum degree of filling of the gas bag chamber closest to the gas generator (first gas bag chamber) is reached before the maximum degree of filling of the subsequent gas bag chamber (s) (second etc. gas bag chamber) is reached.

In general, all gas bag chambers of the first or second gas bag can be fluidly connected to one another and to a gas generator, so that all gas bag chambers of a gas bag can be filled with gas by means of a gas generator. For example, a gas generator can be assigned to the first gas bag and a further gas generator can be assigned to the second gas bag and be fluidly connected to it. The two gas generators can be triggered with a time delay and / or differ in terms of a gas delivery performance in order to achieve a time-delayed inflation of the two gas bags. It is also conceivable that a single gas generator serves to provide gas for the first and the second gas bag. Here, a fluidic connection between the first and the second gas bag can be realized by means of an additional connection chamber, which connects the first and the second gas bag to the gas generator. The gas generator can be designed to fill the first and second gas bags with gas at different times. In order to fill the gas bags at different times, the individual gas generator can be arranged off-center, for example with respect to the first and second gas bags. A supply line from the gas generator to one of the first and second gas bags can also be opened with a time delay with respect to a triggering of the gas generator by means of an (electromagnetic) valve device. Additionally or alternatively, a feed line to one of the first and second gas bags and a feed line to the other of the first and second gas bags can differ in terms of a transmission rate, for example in that the feed lines have different lengths and / or cross sections.

In the inflated state of the gas bags and in the intended state of the gas bag arrangement on a vehicle seat, the cross section (viewed in a horizontal cross-sectional plane) of this gas bag between two adjacent gas bag chambers of a gas bag can be smaller than the cross section of the two adjacent gas bag chambers. The cross section can be reduced to such an extent that the gas bag forms a desired kink in the area of the reduced cross section. In particular, such a predetermined kink can be formed between an airbag chamber of the frontal section and an airbag chamber of the side section.

Tether straps can be provided to shape the first and second gas bags when inflated. The tether can be attached to several points of a material layer of the first or second gas bag. It is also conceivable that a tether is not only attached to an airbag, but also to a vehicle seat or a structure attached to the vehicle seat. In addition to the shape, tether straps also serve to stabilize the relative arrangement of the gas bag chambers to one another and / or the relative arrangement of the gas bags in the inflated state of the gas bags to a reference, in particular a vehicle seat. A tether can in particular be designed and attached in such a way that it supports kinking of the first or second gas bag between the frontal and the lateral section. For this purpose, the tether can extend between the frontal section and the lateral section and in particular can be fixed on the one hand to the frontal section and on the other hand to the lateral section. This applies to gas bags with one or more gas bag chambers. In particular, in the case of gas bags with a plurality of gas bag chambers, the desired kink and the tether can be coordinated with one another in such a way that the gas bag kinks at the desired kink. In addition, the tether can be provided to give the frontal section and / or the side section a specific shape when inflated. For this purpose, tether straps can be arranged in the interior of the frontal or lateral section. For example, the frontal section or the gas bag chamber that forms the frontal section (from the point of view of the vehicle occupant who is seated on the vehicle seat as intended) can be concave when the gas bag arrangement is properly positioned on a vehicle seat and concave when the first or second gas bag is inflated be curved. From the point of view of the vehicle occupant, this gas bag chamber represents the last gas bag chamber of the gas bag. Due to the concave curvature, a depression facing the vehicle occupant is formed. As an alternative to tether straps, this curvature (trough) can be achieved by appropriately cutting the material layers that form the frontal section.

The frontal section of the first and / or the second gas bag can extend in front of a vehicle occupant who is seated as intended on a vehicle seat. The frontal section can cover an abdomen area of the vehicle occupant.

Additionally or alternatively, the frontal section can cover a head region of the vehicle occupant. The abdomen area and / or the head area of the vehicle occupant can additionally be covered on both sides by the lateral section of the first and the second gas bag. The side section can also extend into the pelvic area of the vehicle occupant. In particular, gas bag chambers which are designed as essentially vertically oriented tubes (and in particular form the lateral section) can extend into the head region and / or the pelvic region of the occupant sitting on the vehicle seat.

According to a further embodiment, the gas bag arrangement has a first and a second gas bag, which in the inflated state and in the intended manner on one Vehicle seat arranged state of the airbag arrangement on opposite sides next to the head area and each front of the chest area of the occupant sitting on the vehicle seat. The first and the second airbag have an arc shape (C-shape, banana shape), the curvature of which lies in a plane that extends essentially perpendicular to the direction of the seat width. This form largely prevents contact with the occupant's arms, which could hinder the unfolding of the gas bags. An airbag shaped in this way is also compatible with different statures of the vehicle occupant. An overlap section of the first and second gas bags extends in front of the chest area of the vehicle occupant. The overlapping sections can in particular be attached to one another when the gas bags are inflated. The first and the second gas bag can each be designed as a gas bag chamber.

It is conceivable that one (the first) of the two gas bags comprises a main chamber and a secondary chamber, which are fluidly connected to one another. The main chamber can have a larger volume than the secondary chamber when the gas bag is inflated. In the inflated state, the main chamber can extend laterally next to the head area and in front of the chest area of the occupant sitting on the vehicle seat and can have the C-shape. When the gas bags are inflated, the secondary chamber can overlap with the other (second) of the two gas bags and, for example, be connected to the other (second) gas bag by a connecting means (as already described in connection with other embodiments). By connecting the two gas bags via the secondary chamber, the connecting means can be subjected to shear stress. The other (second) gas bag can have only one gas bag chamber. The main chamber of one (first) gas bag can correspond to the gas bag chamber of the other (second) gas bag in terms of shape and size. In addition, the other (second) gas bag can also have a main chamber and a secondary chamber, wherein the main chambers of the two gas bags can be essentially identical in terms of shape (C-shape) and size. The secondary chamber of the first (second) gas bag can thus overlap with the main chamber of the second (first) gas bag, with which it is not fluidly connected

The secondary chamber (s) can extend in the inflated state of the gas bags in front of the chest area of the occupant sitting on the vehicle seat. Alternatively, an expansion in front of the head area is conceivable. The secondary chamber (s) can also extend in front of the chest area and the head area.

To stabilize the gas bag arrangement when the gas bags are inflated, a tether can be provided which connects the first and second gas bags to one another. When the gas bag arrangement is properly arranged on a vehicle seat, the tether can extend in particular behind the head region of the occupant sitting on the vehicle seat.

Furthermore, one or more fastening means can be provided for stabilization, which are used to fasten the first and second gas bags to the vehicle seat. The fastening means can be designed as a tether that is fixed on the one hand to the vehicle seat and on the other hand to the first or second gas bag. The fastening means can each be arranged in a section of the gas bag which, as intended, extends next to the head region. For example, one fastening means can be provided at the upper end of this section and another fastening means at the lower end of this section.

To fill the gas bags with a gas, the gas bags can be fluidly connected to a gas generator as already described in connection with other embodiments.

According to a further embodiment, the gas bag arrangement comprises at least a first and a second gas bag which is inflatable to protect a vehicle occupant, the gas bags each being arranged on a vehicle seat and each having a shell shape in the inflated state. The shell shape is such that it serves to hold a shoulder of a vehicle occupant who is intended to be seated on the vehicle seat. To form the shell shape, the first and the second airbag each have a lateral section which extends in a plane transverse to the seat width direction, an upper section which extends in a plane transverse to the longitudinal direction of the seat, and a frontal section which extends in one plane extends transversely to the lateral section and transversely to the upper section. The longitudinal direction of the seat extends essentially perpendicular to the direction of the seat width and essentially corresponds to the longitudinal direction of the upper body of an occupant who is intended to be seated on the vehicle seat. The side section borders the top section and the front section. The upper section borders the lateral section and the frontal section. The frontal section borders the upper section and the lateral section. In this case, when the gas bag arrangement is arranged as intended on a vehicle seat and when the gas bags are inflated, the lateral and the upper section between the backrest on the one hand and the frontal section otherwise arranged. Thus, an occupant's shoulder is positioned between the backrest and the frontal section. The upper portion extends in the seat width direction as viewed from the side portion toward the center of the seat width.

The three sections can be formed together by a single gas bag chamber or by one gas bag chamber each, in which case the individual gas bag chambers can be fluidly connected to one another.

It can be provided that in the inflated state of the gas bags, the frontal sections of the first and second gas bags touch or overlap in sections. The corresponding contact sections or overlap sections can extend in front of the occupant's chest area when the gas bags are inflated. The contact sections or overlap sections can have connecting means, via which the contact sections or overlap sections can be connected to one another and are connected to one another when the gas bags are inflated. The connecting means can be connecting means which have already been described in connection with other embodiments. The connection of the two gas bags to one another can ensure that the shoulders of the occupant do not slip out of the cup-shaped gas bags when the upper body of the occupant presses on the frontal sections in the accident situation.

The first and the second gas bag can each comprise a main chamber, each main chamber forming the shell shape described. The main chambers can have an identical shape and a mirror-symmetrical orientation. In addition, the first and / or the second gas bag can comprise a secondary chamber which is fluidly connected to the main chamber of the first and second gas bags. When the gas bags are inflated, the secondary chamber can have a smaller volume than the main chamber.

It is conceivable that one (the first) of the two gas bags comprises a main chamber and a secondary chamber, which are fluidly connected to one another. In the inflated state of the gas bags, the secondary chamber can overlap with the other (second) of the two gas bags, in particular with its frontal section, and for example by a connecting means (as already described in connection with other embodiments) with the other (second) gas bag or its frontal section Section. By connecting the two gas bags via the secondary chamber, the connecting means can be subjected to shear stress.

The other (second) gas bag can have only one gas bag chamber. The main chamber of one (first) gas bag can correspond to the gas bag chamber of the other (second) gas bag in terms of shape (shell shape) and size. In addition, the other (second) gas bag can also have a main chamber and a secondary chamber, the main chambers of the two gas bags being essentially identical in shape (shell shape) and size. The secondary chamber of the first (second) gas bag can thus overlap with the main chamber of the second (first) gas bag, with which it is not fluidly connected

The secondary chamber (s) can extend in the inflated state of the gas bags in front of the chest area or in front of the head area of the occupant sitting on the vehicle seat. For this purpose, the secondary chamber (s) can be arranged on the frontal section of the corresponding main chamber. In particular, a side chamber in the head area can have an additional protective effect in addition to the stabilizing effect.

The invention also relates to a vehicle occupant restraint system. The vehicle occupant restraint system comprises an airbag arrangement according to the invention and at least one gas generator (inflator) which is designed to fill the first airbag and the second airbag with a gas. The vehicle occupant restraint system is designed such that the at least one gas generator fills the first and second gas bags with gas at different times. In particular, the vehicle occupant restraint system can be designed such that first the first gas bag is (fully) inflated and then the second gas bag, the second gas bag at least partially surrounding the first gas bag in the inflated state. Design options for the inflator are already listed above.

The invention also relates to a vehicle seat which comprises an airbag arrangement according to the invention or a vehicle occupant restraint system according to the invention. The first airbag and the second airbag or the vehicle occupant restraint system can each be detachably attached to the vehicle seat so that they can be replaced after a triggering event. One or more tether straps can be fastened to the vehicle seat, which straps are also fastened to the first or second airbag and serve to shape and / or stabilize the airbags. The gas bags can fold in the direction of the seat width are at least partially opposite. In the folded state, the gas bags can be arranged in opposite lateral sections of a backrest, a seat surface or a headrest of the vehicle seat or in opposite armrests of the vehicle seat.

• 1 eine schematische Darstellung einer Gassackanordnung für ein Fahrzeuginsassen-Rückhaltesystem gemäß einer Ausführungsform;
• 2A-2D schematische Darstellungen unterschiedlicher Stadien eines Auslösevorgangs der Gassackanordnung für ein Fahrzeuginsassen-Rückhaltesystem aus 1;
• 3-6 schematische Darstellungen eines Fahrzeugsitzes mit einer Gassackanordnung gemäß verschiedener Ausführungsformen in einer Draufsicht von oben;
• 7-12 schematische Darstellungen eines Fahrzeugsitzes mit einer Gassackanordnung gemäß weiterer Ausführungsformen in einer Seitenansicht;
• 13-14 schematische Darstellungen eines Fahrzeugsitzes mit einer Gassackanordnung gemäß verschiedener Ausführungsformen in einer Draufsicht von oben;
• 15 schematische Darstellung einer Gassackanordnung mit inneren Fangbändern in einer Frontalansicht gemäß einer Ausführungsform der Erfindung;
• 16-19 schematische Darstellungen eines auf einem Fahrzeugsitz sitzenden und von einer Gassackanordnung umgebenen Insassen zur Veranschaulichung verschiedener Möglichkeiten des Insassen, sich aus der Gassackanordnung zu befreien; und
• 20-26 schematische Darstellungen eines Fahrzeugsitzes mit einer Gassackanordnung gemäß weiterer Ausführungsformen in einer perspektivischen Ansicht.

The invention is explained in more detail below on the basis of exemplary embodiments with reference to the figures. Show it:

• 1 a schematic representation of an airbag arrangement for a vehicle occupant restraint system according to an embodiment;
• 2A-2D schematic representations of different stages of a triggering process of the gas bag arrangement for a vehicle occupant restraint system 1 ;
• 3-6 schematic representations of a vehicle seat with an airbag arrangement according to various embodiments in a plan view from above;
• 7-12 schematic representations of a vehicle seat with an airbag arrangement according to further embodiments in a side view;
• 13-14 schematic representations of a vehicle seat with an airbag arrangement according to various embodiments in a plan view from above;
• 15 schematic representation of an airbag arrangement with inner tether in a frontal view according to an embodiment of the invention;
• 16-19 schematic representations of an occupant sitting on a vehicle seat and surrounded by an airbag arrangement to illustrate various possibilities for the occupant to free themselves from the airbag arrangement; and
• 20-26 schematic representations of a vehicle seat with an airbag arrangement according to further embodiments in a perspective view.

1 shows a schematic representation of an airbag arrangement 100 for a vehicle occupant restraint system. The gas bag arrangement 100 comprises a first gas bag 120 and a second gas bag 140 that are inflatable to protect the vehicle occupant, for example in the event of a detected impact. The gas bags 120 , 140 are in 1 shown in the inflated state. In the example shown, there is also a vehicle occupant P on a seat S of the vehicle. The gas bag arrangement 100 is like that in relation to the occupant P arranged that the gas bags 120 , 140 proceeding from opposite sides of the occupant P extend. The gas bags extend 120 , 140 from opposite sides from the backrest of the vehicle seat S .

The first gas bag 120 and the second gas bag 140 are each shaped so that they are at least partially along one side and in a frontal area in front of the occupant P extend. When the gas bags are inflated, the second gas bag also surrounds them 140 the first gas bag 120 at least partially, for example in the frontal area in front of the occupant P . The first gas bag 120 and the second gas bag 140 overlap in an overlap section 122 , 142 of the first and second gas bags 120 , 140 .

The first gas bag 120 and the second gas bag 140 are located in the area of the overlap sections 122 , 142 in contact with each other. The gas bag arrangement 100 points in at least one of the overlap sections 122 , 142 Connection means, which are provided, an adhesive connection between the first gas bag 120 and the second gas bag 140 in the area of the overlap sections 122 , 142 to build. The connecting means is, for example, on at least one of the overlap sections 122 , 142 Glue attached. In further examples, the gas bag arrangement comprises 100 one or more Velcro connectors for adhesive connection of the overlap sections 122 , 142 .

The gas bag arrangement 100 causes the gas bags to be inflated 120 , 140 a U-shaped enclosure of the vehicle occupant P . In this way, the gas bag arrangement allows 100 effective absorption of impact forces from different directions, from outside the occupant P can act. The gas bag arrangement also allows 100 restraining the occupant P in the event of an impact in a variety of directions. The adhesive bond between the overlap section 122 of the first gas bag 120 and the overlap section 142 of the second gas bag 140 ensures that the occupant breaks through P is effectively prevented by the U-shaped enclosure, for example when the upper body rushes forward. A size of the overlap sections 122 , 142 is selected, for example, according to an adhesive strength of the selected connecting means and an expected retention force required.

The first gas bag 120 has a volume in the inflated state that is greater than the volume of the second gas bag 140 . In some examples the first gas bag is 120 formed such that there is a cross section, in particular a vertical extension, of the first gas bag 120 starting from a side feed section 128 ( to the side of the occupant P ) so enlarged (preferably by more than half) that the first gas bag 120 in a frontal section 129 in front of the occupant P over at least one head and thorax area of the occupant P extends. In contrast, the second gas bag 140 For example, it is designed such that it starts from a lateral feed section 148 (to the side of the occupant P ) in the frontal section 149 extends only over the thoracic area and its cross-section, in particular its vertical extension, is thus opposite the lateral feed section 148 not or only slightly enlarged (preferably by less than a quarter). The side feed sections 128 , 148 have a relatively small cross-section in the vertical extent, which primarily feeds the gases released by an inflator into the sections extending in the frontal area 129 , 149 the gas bags 120 , 140 serves. With a corresponding design, the side feed sections 128 , 148 but also have a protective effect in the event of a side impact or an oblique impact.

In some examples, in the event of a head-on collision, that acts closer to the occupant P arranged first gas bag 120 primarily to absorb an impact of the occupant, especially in the head and thorax area. In contrast, the second gas bag 140 in this case, for example, primarily to secure the enclosure of the occupant P through the gas bag arrangement 100 as well as in some examples to support the first gas bag 120 and / or to provide additional impact absorption. The first gas bag can be used to absorb the impact of the occupant in the head area 120 have side wings, which are intended to extend to the left and right of the occupant's head and on the frontal section 129 are arranged.

For a provision of the gas bag arrangement 100 The gas bags are in a vehicle 120 , 140 in the folded state, for example on opposite sides of a backrest of a seat S attachable. Alternatively, the gas bags 120 , 140 in the folded state on opposite structures of the vehicle, in each case adjacent to the opposite sides of the backrest, attached.

To form the in 1 shown U-shaped enclosure of the occupant P by means of the gas bag arrangement 100 it is beneficial to use the gas bags 120 , 140 to inflate each other at different times. In some examples, when the gas bag arrangement is triggered 100 hence the first gas bag 120 inflated. The second gas bag is inflated with a time delay 140 , which is, for example, from the outside around the inflated first gas bag 120 places around this at least in the area of the overlap sections 122 , 142 to surround, and an adhesive connection with the first gas bag by connecting means 120 forms. Such a deferred inflation of the gas bags 120 , 140 has the advantage that through the first gas bag 120 in the entire frontal area of the occupant P Protection is quickly provided, for example in the case of external forces. It is also avoidable that the inflation of the first gas bag 120 through parts of the second gas bag 140 is hindered. It is also a correct fitting of the second gas bag 140 to the first gas bag 120 favored. At the same time, this allows for the first gas bag 120 lower volume of the second gas bag 140 a rapid inflation of the second gas bag 140 to form a safe enclosure for the occupant P .

The 2A to 2D show schematic representations of various stages when the gas bag arrangement is triggered 100 out 1 . 2A shows a state before up to and including the moment of triggering of the gas bag arrangement (not shown). The gas bags of the gas bag arrangement are in a folded state and are in each case on opposite sides of a backrest of the seat S or to adjacent structures of a vehicle in which the seat is located S located, arranged. At the seat S it is for example a driver's seat of the vehicle, which is aligned in the direction of travel.

2 B shows a state after triggering the gas bag assembly. As related to 1 First of all, an inflation of the first gas bag is described 120 he follows.

The overlap section 122 of the first gas bag 120 is located on an outward-facing surface of the gas bag 120 in front of the occupant P .

2C shows a further stage of the triggering process of the gas bag arrangement 100 . Now there is a time delay to the first gas bag 120 , also the second gas bag 140 inflated. The one on an inner surface of the second gas bag 140 arranged overlap section 142 of the second gas bag 140 also has the outward-facing overlap section 122 of the first gas bag 120 created and forms an adhesive connection with this by one or more connecting means. In the 2C shown position of the gas bag arrangement 100 and inmate P corresponds to that from 1 .

2D shows a subsequent stage. There is a head and thorax area of the occupant P towards the gas bag arrangement 100 moves, for example, as a result of the occupant advancing P result in a frontal impact can, the previous detection of triggering the gas bag assembly 100 has caused. The gas bag arrangement 100 in this case, catches the rushing body of the occupant P on. In some examples, the first and / or the second gas bag points to the energy absorption 120 , 140 an outflow opening for throttled outflow of gas from the respective gas bag 120 , 140 on. In further examples are the first and / or the second gas bag 120 , 140 for energy absorption via deformation elements, for example on the seat S or a structure of the vehicle.

In 3rd (also in 6 ) is on a vehicle seat S of a vehicle F arranged airbag arrangement 100 shown according to a further embodiment of the invention. The first and the second gas bag 120 , 140 each have one in front of the vehicle occupant P extending frontal section 129 , 149 on, the frontal section 129 , 149 each through a frontal chamber 1290 , 1490 is trained. The frontal chambers 1290 , 1490 each border on a lateral feed section 128 , 148 of the first or second gas bag 120 , 140 on.

The side feed sections 128 , 148 each have a plurality of chambers 1280 , 1480 on, each elongate, in particular tube-like, in the vertical direction, ie along the vehicle height direction or longitudinal direction of the seat. In 3rd are the chambers 1280 , 1480 each shown in a cross section parallel to a horizontal plane. The chambers 1280 , 1480 are each in flow connection (for example via passage openings, not shown).

The front of the side chambers 1280 , 1480 is adjacent to the frontal chamber 1290 , 1490 of the respective gas bag 120 , 140 arranged; for example, it borders on the frontal chamber 1290 , 1490 on. The frontal chambers 1290 , 1490 are however formed separately and are from the front of the chambers 1280 , 1480 each separated by a wall. However, there is also a flow connection between the frontal chambers 1290 , 1490 and the respective front chamber 1280 , 1480 ; for example via a passage opening (overflow opening) in the wall or a passage area adjacent to the wall.

The chambers 1280 , 1480 of the side feed sections 128 , 148 and the frontal chambers 1290 , 1490 are arranged and connected together so that the gas bags 120 , 140 - viewed in a horizontal plane - at least in the area of the frontal chambers 1290 , 1490 and the side feed sections 128 , 148 have a curved course or the frontal sections 129 , 149 and the side feed sections 128 , 148 are oriented at an angle to each other. The frontal chambers 1290 , 1490 overlap each other in the corresponding overlap section 122 , 142 , in which a connecting means on the mutually facing outer sides of the frontal chambers 1290 , 1490 is provided.

To a curved shape of the side sections 128 , 148 the gas bag outside (facing the occupant P opposite side) has a longer developed fabric length than the inside of the gas bag (which the occupant P facing side). So the gas bag can 120 , 140 in the inflated state with the formation of a curve on the occupant P invest.

4th relates to a further embodiment of the gas bag arrangement 100 . Then the frontal section 129 , 149 and the side feed section 128 , 148 each with a curvature 1001 , 1002 of the gas bag 120 , 140 in flow communication with each other and are formed by a single gas bag chamber. The frontal section 129 , 149 and the side feed section 128 , 148 run at an angle to each other.

The curvature 1001 , 1002 has in particular one opposite the frontal section 129 , 149 and the side feed section 128 , 148 reduced cross-section (parallel to a horizontal plane (ie a narrowed kink). The frontal section 129 , 149 and the side feed section 128 , 148 are however different than in 3rd not separated from each other by a wall. In addition, means, for example in the form of tether straps arranged inside, can also be provided for generating the narrowed kink. In 4th are the frontal section 129 , 149 and the side feed section 128 , 148 formed by a common chamber. However, it is also conceivable that the frontal section 129 , 149 and the side feed section 128 , 148 are each formed by separate chambers, which are, however, connected to one another via the curvature. However, this is not mandatory. The side feed section could also 128 , 148 at least one of the gas bags 120 , 140 quite according to the type of 3rd comprise several chambers.

To stabilize the position of the frontal section 129 , 149 and the side feed section 128 , 148 are relative to each other in 4th outer tether 51 , 52 present, each of the frontal section 129 , 149 of an airbag 120 , 140 with the side feed section 128 , 148 this gas bag 120 , 140 connect.

Such tether 51 , 52 can also in the embodiment of the 3rd be used. This configuration is then in 14 shown. There are additional tethers 53 , 54 present, each of the side feed section 128 , 148 with a component of the vehicle seat S (about a backrest). The tether 51 , 52 serve to stabilize the gas bags 120 , 140 in itself. The tether 53 , 54 serve to stabilize the gas bags 120 , 140 regarding the vehicle seat S .

Alternatively (or additionally) there can be at least one tether 61 , 62 also inside the frontal chamber 1290 of the first gas bag 120 extend to in a the vehicle occupant P facing side 1291 the frontal chamber 1290 an indentation 1292 to create. This configuration is in 13 shown. With the help of the indentation 1292 can adjust the contour of the gas bag 120 to the shape of the vehicle occupant P take place so that the gas bag fits snugly. An earlier restraint of the occupant and a better connection between the gas bags can be achieved 61 , 62 each extend in particular from one of the vehicle occupants P opposite side 1293 up to that of the vehicle occupant P facing side 1291 the frontal chamber 1290 , with one end of each tether 61 , 62 on these sides of the frontal chamber 1290 is set. It is also conceivable that the frontal chamber is analogous 1490 of the second gas bag 140 has at least one such tether.

The gas bags too 120 , 140 the embodiment 1 can inside the frontal chambers 1290 , 1490 with tether 61 , 62 be equipped. The tether straps extend 61 , 62 inside the first gas bag 120 predominantly vertical (along the longitudinal direction of the seat) and the tether 61 , 62 inside the second gas bag 140 predominantly horizontal (along the seat width direction), as in 15 in a front view of the gas bag arrangement 1 is shown schematically.

Instead of straps, the gas bags can be bent 120 , 140 as in 4th also represented by a corresponding cut of the material layers, the formation of the gas bags 120 , 140 serve, be achieved. In 5B are the corresponding material layers for the first and second gas bags 120 , 140 shown in the non-inflated, only superimposed state. The outer layer of material 122 , 142 shows a fold 123 , 143 on so the outer layer of material 122 , 142 compared to the inner material layer 121 , 141 is longer. The shortening of the inner material layer 121 , 141 compared to the outer material layer 122 , 142 causes the gas bag to kink 120 , 140 inflated in the area of the fold 123 , 143 . The inflated state is in 5A shown. Instead of an extension of one layer of material compared to the other layer of material by means of a fold, darts in the other layer of material can be provided to shorten the other layer of material compared to the one layer of material. The fold or darts are to be placed in such a way that the airbag kinks at the desired location and in the desired direction when inflated.

According to the embodiment 7 (Side view of the first gas bag 120 ) the side section 128 of the first gas bag 120 three essentially vertically extended and elongated gas bag chambers 1280 comprise, which are arranged in a plane transverse to the seat width direction. A first gas bag chamber (rearmost from the perspective of the occupant) 1280a extends over the pelvic and thoracic area of the occupant. A second and a third gas bag chamber 1280b , 1280c each extend over the head and thorax area of the occupant. Also the second gas bag 140 can have such a combination of gas bag chambers. The frontal chamber 1290 of the first gas bag 120 extends over the head and thorax area of the occupant. Deviating from this, the frontal chamber extends 1490 of the second gas bag only over the thorax area of the occupant P . The number of pelvic-thoracic chambers and head-thoracic chambers can generally differ from that in 7 shown number differ.

According to the 8th (Side view of the second gas bag 140 ) can have four side chambers 1480a - 1480d be provided, at least one of the side chambers 1480a-d of the side feed section 148 of the second gas bag 140 is designed so that it inflates the pelvic, thorax and head area of the vehicle occupant P at least partially covers (chambers 1480b , 1480c) . Analogously or alternatively, the side feed section 128 of the first gas bag 120 be trained.

With such a configuration of the side feed section 128 , 148 additional protection can be provided in the event of a side impact, in particular a nearside or farside impact (impact on the vehicle side facing or facing away from the vehicle occupant). It is also possible that next to the side chamber 1480b , 1480c that extend from the pelvic area to the head area of the vehicle occupant P extends, at least one chamber is present, which essentially serves only to protect the pelvic area (chamber 1480a) . It is also conceivable that part of the side chambers 1480b , 1480c , 1480d only cover the head and thorax area, while another part of the lateral chambers 1480a extends only over the chest area ( 9 , Side view of the second gas bag 140 ).

In the embodiments of the 7 to 9 extends the side section 128 , 148 from one side of the backrest of the vehicle seat S .

Another embodiment shows 12th . Here are the side chambers 1280a , 1280b and 1280c of the side section 128 of the first gas bag 120 shown. The first chamber 1280a coming from one side of the headrest K of the vehicle seat S extends, extends over the head region of the occupant P , as well as the following side chambers 1280b 1280c and the frontal chamber 1290 that also extends over the shoulder area of the occupant P extend. It is advantageous here that the occupant's arms can hardly hinder the spreading of the gas bag.

In the embodiment 10th extends the first gas bag 120 from the armrest A of the vehicle seat S . The first gas bag 120 here includes a side chamber 1280 and a frontal chamber 1290 , which covers the thoracic area and the lower head area as an example. Also the second gas bag 140 can have such a combination of gas bag chambers. The side chamber 1280 is arranged approximately at the same distance from the backrest as the front chamber 1290 , so that the chambers have no curvature here. The gas bag can be stowed in the armrest in the idle state, while a gas generator can also be installed in another way, for example in the backrest.

11 shows an embodiment in which the first gas bag 120 in the seat F of the vehicle seat S is arranged and protrudes laterally from the seat F in the inflated state. The lateral chamber is also in this embodiment 1280 approximately the same distance from the backrest as the frontal chamber 1290 so the chambers 1280 , 1290 have no curvature here. It is conceivable that the first and the second gas bag 120 , 140 are formed in this way.

The 16 to 19th show ways an occupant can get out of the inflated gas bags after an accident 120 , 140 can free. In 16 An arrow is shown, which indicates that the gas bag arrangement 100 can be pushed up over the occupant's head. In 17th includes the first (and second) gas bag 120 a tear line R , for example outside the interior enclosed by the gas bag chamber. The occupant can on the vehicle seat S attached gas bag by tearing the tear line R from the vehicle seat S separate. As already mentioned, in one embodiment there is a connecting means 130 provided the overlap section 122 of the first gas bag 120 and the overlap section 142 of the second gas bag 140 connects with each other. In the embodiment of the 18th and 19th the connecting means is formed by a Velcro fastener. 19th here is an enlargement of a section 18th that the overlap sections 122 , 142 and the lanyard 130 shows. The Velcro 130 is designed such that the shear force is low when the two overlap sections 122 , 142 are moved apart along a predetermined direction (so that they are easily separated), and that the shear force is large with a movement that is not in the predetermined direction (so that they are difficult or impossible to separate). According to one embodiment, the Velcro fastener is designed such that the Velcro side is on the outside (side facing away from the occupant) of the frontal section 129 of the first gas bag 120 is arranged and the fleece side on the inside (side facing the occupant) of the frontal section 149 of the second gas bag 140 is arranged, the second gas bag 140 the first gas bag 120 partially encloses. In this way, injuries to the occupant through contact with the Velcro side can be avoided.

Another embodiment provides that when the gas bags are unfolded 120 , 140 the arms of the vehicle occupant (as indicated by the arrow in 20 indicated) are pressed down. For this, the side chambers 1280b , 1280c of the first gas bag (and analogously the corresponding lateral chambers of the second gas bag) must be specially folded and / or rotate around the x-axis when the vehicle is unfolded.

According to a further embodiment, the gas bag arrangement comprises 100 a first and a second gas bag 120 , 140 , each of a gas bag chamber in the inflated state C-shaped 1270 , 1470 be formed ( 21 ). The C-shaped gas bag chambers 1270 , 1470 extend to the side of the occupant's head (on opposite sides of the head) and in front of the occupant's chest. The gas bags are for stabilization 120 140 behind the head of the occupant with a tether 71 connected and each with a tether 72 on the vehicle seat S fixed. The tether 72 extends at the lower end of the head area of the vehicle occupant. Additionally or alternatively, a (further) tether can be provided which extends from the gas bag at the upper end of the head region of the vehicle occupant 120 , 140 to the vehicle seat S extends. An overlap section 122 , 142 , in which the first and the second gas bag 120 , 140 overlap, extends in front of the chest area of the vehicle occupant. In the overlap section 122 , 142 is a lanyard 130 , for example a Velcro fastener is provided to inflate the first gas bag 120 to hold on to the second gas bag and the gas bags 120 , 140 close the front of the vehicle occupant's chest.

In the embodiment 22 includes the first gas bag 120 in addition to the C-shaped chamber 1270 a frontal chamber 1290 that are fluid with the C-shaped chamber 1270 connected is. The frontal chamber shows 1290 a smaller volume than the C-shaped chamber 1270 so the frontal chamber 1290 can be regarded as the secondary chamber and the C-shaped chamber as the main chamber. The frontal chamber 1290 extends in the direction of the C-shaped chamber 1470 of the second gas bag 140 and overlaps with this. The frontal chamber 1290 thus forms the overlap section in sections 122 of the first gas bag 120 . In the overlap sections 122 , 142 of the first or second gas bag 120 , 140 are connecting means formed around the first gas bag 120 on the second gas bag 140 to fix. The secondary chamber or frontal chamber 1290 of the first gas bag 120 extends in the inflated state of the gas bags 120 , 140 in front of the chest area of the occupant sitting on the vehicle seat.

Another embodiment is in 23 shown. This gas bag arrangement 100 comprises a first and a second gas bag 120 , 140 . In 23 are the gas bags on opposite sides of the backrest of a vehicle seat S arranged. The gas bags 120 , 140 each have a shell shape in the inflated state, each of which is designed to receive a shoulder of a vehicle occupant who is intended to be seated on the vehicle seat. The gas bag has the shape of the shell 120 , 140 a side section 128 , 148 (extends to the side of the shoulders), an upper section 127 , 147 (extends above the shoulders) and a frontal section 129 , 149 (stretches in front of the shoulders and chest). (The side section 148 and he top section 147 of the second gas bag 140 are in the representation of the 23 not visible, but mirror the side section 128 or the upper section 127 of the first gas bag 120 .) The three sections are through a gas bag chamber 1260 , 1460 educated. When the gas bags are inflated 120 , 140 touch the frontal sections 129 , 149 of the first and second gas bags 120 , 140 in sections. In the contact area there are connecting means 130 provided to the first and second gas bags 120 , 140 connect to each other in front of the chest area of the vehicle occupant.

In the embodiment 24th includes the first gas bag 120 in addition to the bowl-shaped chamber 1260 a frontal chamber 1290 that are fluid with the bowl-shaped chamber 1260 connected and that to the frontal section 129 is arranged. The bowl-shaped chamber 1260 can be called the main chamber and the frontal chamber 1290 as an adjoining chamber. The frontal chamber 1290 extends in the direction of the bowl-shaped chamber 1460 (especially the frontal section 149 ) of the second gas bag 140 and partially overlaps the frontal section 149 the bowl-shaped chamber 1460 . The frontal chamber 1290 thus forms the overlap section in sections 122 of the first gas bag 120 . In the overlap sections 122 , 142 of the first or second gas bag 120 , 140 are connecting means formed around the first gas bag 120 on the second gas bag 140 to fix. The secondary chamber or frontal chamber 1290 of the first gas bag 120 extends in the inflated state of the gas bags 120 , 140 in front of the chest area of the occupant sitting on the vehicle seat.

The embodiment from 25th differs from that 24th especially in that the first and second gas bags 120 , 140 an additional side chamber each 1250 , 1450 has, the fluid with the corresponding bowl-shaped chamber 1260 , 1460 is connected and in each case to the frontal section 129 , 149 is arranged. The additional side room 1250 , 1450 extends in particular in front of the head area of the occupant.

The embodiment from 26 differs from that 24th especially in that the frontal chamber 1290 of the first gas bag 120 extends in front of the head region of the occupant sitting on the vehicle seat.

Claims (29)

Airbag arrangement (100) for a seat-based vehicle occupant restraint system, with - At least a first and a second inflatable airbag (120, 140) for protecting a vehicle occupant (P), the at least one first and second airbag (120, 140) each being arranged on a vehicle seat (S), wherein - In the inflated state of the gas bags (120, 140), an overlap section (122) of the first gas bag (120) overlaps with an overlap section (142) of the second gas bag (140). Airbag arrangement (100) Claim 1 , characterized in that the first gas bag (120) and the second gas bag (140) each have a frontal section (129, 149) which is in the inflated State of the gas bags (120, 140) extends in a plane parallel to the seat width direction and to the longitudinal direction of the seat, and have a lateral section (128, 148) which extends in the inflated state of the gas bags (120, 140) in a plane transverse to the seat width direction . Airbag arrangement (100) Claim 1 or 2nd , characterized in that the first and / or the second gas bag (120, 140) comprises at least two gas bag chambers (1280, 1480, 1290, 1490) which are fluidly connected to one another. Airbag arrangement (100) Claim 3 , characterized in that the first and / or the second gas bag (120, 140) comprises a main chamber and a secondary chamber, the secondary chamber being fluidly connected to the main chamber of the first and second gas bags and the secondary chamber having a smaller volume in the inflated state as the main chamber. Airbag arrangement (100) Claim 3 or 4th , characterized in that the at least two gas bag chambers (1280, 1480) are each designed as substantially vertically oriented tubes (1280a, 1280b, 1280c, 1280d, 1480a, 1480b, 1480c, 1480d). Airbag arrangement (100) according to one of the Claims 3 to 5 , characterized in that the at least two gas bag chambers (1280, 1480, 1290, 1490) in the inflated state and viewed in a horizontal cross-sectional plane are arranged one after the other in a row, the at least two gas bag chambers (1280, 1480, 1290, 1490) in particular such are arranged to one another and fastened to one another in such a way that the at least two gas bag chambers (1280, 1480, 1290, 1490), when inflated, viewed along a curvature (1001, 1002) in a horizontal cross-sectional plane. Airbag arrangement (100) according to one of the Claims 3 to 6 , characterized in that two adjacent ones of the at least two gas bag chambers (1280, 1480, 1290, 1490) are fluidly connected to one another via an overflow opening. Airbag arrangement (100) Claim 7 , characterized in that one of the at least two gas bag chambers (1280, 1480) has an inflow opening through which gas from a gas generator can be introduced into the gas bag, the inlet opening being designed with respect to the overflow opening of this gas bag chamber such that gas generated by the gas generator from the The gas generator flows successively into the at least two gas bag chambers (1280, 1480, 1290, 1490), the size of the overflow opening between two adjacent gas bag chambers (1280, 1480, 1290, 1490) being dimensioned such that the maximum degree of filling of that of the two adjacent gas bag chambers (1280, 1480, 1290, 1490), which is closer to the gas generator, is reached before the maximum filling level of the other of the two adjacent gas bag chambers (1280, 1480, 1290, 1490) is reached. Airbag arrangement (100) according to one of the preceding claims, characterized in that when viewed in the inflated state in a horizontal cross-sectional plane, the first or second airbag (120, 140) between two adjacent airbag chambers (1280, 1480, 1290, 1490) has a smaller cross section than the adjacent gas bag chambers (1280, 1480, 1290, 1490), the first or second gas bag (120, 140) forming a desired kink (1001, 1002) in the area of the smaller cross section. Airbag arrangement (100) according to one of the Claims 3 to 9 , characterized in that at least one gas bag chamber (1280a, 1280b, 1280c, 1280d, 1480a, 1480b, 1480c, 1480d) is in the state of the gas bag arrangement (100) which is arranged as intended on a vehicle seat (S) and in the inflated state of the first or second gas bag. extends in the vertical direction into the head region and / or the pelvic region of the vehicle occupant (P) sitting on the vehicle seat (S). Airbag arrangement (100) according to one of the preceding claims, characterized in that when the airbag arrangement (100) is arranged as intended on a vehicle seat (S) and when the first or second airbag (120, 140) is inflated, the frontal section (129, 149 ) is concavely curved. Airbag arrangement (100) according to one of the preceding claims, characterized in that the overlap sections (122, 142) are in the inflated state of the gas bags (120, 140) in front of the vehicle occupant (S) and overlap. Airbag arrangement (100) according to one of the preceding claims, characterized in that in the inflated state of the airbags (120, 140) the overlap sections (122, 142) are in mechanical contact with one another, and in particular can be connected to one another via connecting means (130) and in the inflated state of the gas bags (120, 140) are connected to one another, the overlap sections (122, 142) in particular being at least partially adhering to one another when the gas bags (120, 140) are inflated. Airbag arrangement (100) Claim 13 , characterized in that the connecting means (130) by moving the connecting means (130) are separable from each other (only) along a predetermined direction. Airbag arrangement (100) according to one of the Claims 3 to 14 , characterized in that tether (51, 52, 53, 54, 61, 62) for shaping the gas bag chambers (1280, 1480, 1290, 1490) in the inflated state of the gas bags (120, 140), for stabilizing the relative arrangement of the gas bag chambers (1280, 1480, 1290, 1490) to one another and / or to stabilize the relative arrangement of the gas bags (120, 140) in the inflated state of the gas bags (120, 140) for a reference, in particular a vehicle seat (S). Airbag arrangement (100) Claim 1 , characterized in that when the gas bag arrangement (100) is arranged as intended on a vehicle seat (S) and when the first and second gas bags (120, 140) are inflated, the first gas bag (120) and the second gas bag (140) are on opposite sides Sides extend next to the head area and in front of the chest area of the occupant (P) sitting on the vehicle seat (S), the overlap sections (122, 142) extending in front of the chest area. Airbag arrangement (100) Claim 16 , characterized in that the first and second gas bags (120, 140) each comprise a main chamber (1270, 1470), the main chamber (1270, 1470) being located laterally next to the head region and in front of the chest region of the on the vehicle seat (S) seated occupant (P), and that the first and / or the second gas bag (120) comprises a secondary chamber (1290) which is fluidly connected to the main chamber (1270) of the first and second gas bag (120), the secondary chamber ( 1290) in the inflated state of the gas bags (120, 140) overlaps with the main chamber (1470), with which it is not fluidly connected, and in particular is connected to this main chamber (1470) by a connecting means (130). Airbag arrangement (100) Claim 17 , characterized in that the secondary chamber (1290) extends in the inflated state of the gas bags (120, 140) in front of the chest area or in front of the head area of the occupant (P) sitting on the vehicle seat (S). Airbag arrangement (100) according to one of the Claims 16 to 18th , characterized in that the first and the second gas bag (120) are connected to one another via a tether (71), the tether (71) being in the intended state on a vehicle seat (S) of the gas bag arrangement (100), in particular behind the head region of the occupant (P) sitting on the vehicle seat (S). Airbag arrangement (100) according to one of the Claims 16 to 19th , characterized in that the first and the second gas bag (120, 140) in the section corresponding to the head region have fastening means (72) for fastening to the vehicle seat (S), in particular a fastening means being provided at the upper end of this section. Airbag arrangement (100) for a seat-based vehicle occupant restraint system, with at least a first and a second airbag (120, 140) inflatable to protect a vehicle occupant, the at least one first and second airbag (120, 140) each on a vehicle seat (S) is to be arranged, the first and second airbags (120, 140) each having a shell shape in the inflated state, each of which is designed to receive a shoulder of a vehicle occupant (P) seated as intended on the vehicle seat (S), the first and the second airbag (120, 140) each have a lateral section (128, 148) which extends in a plane transverse to the seat width direction, an upper section (127, 147) which extends in a plane transverse to the seat longitudinal direction, and a frontal section (129, 149), which extends in a plane transversely to the lateral section (128, 148) and transversely to the upper section (127, 147), which together form the Scha form lenform. Airbag arrangement (100) Claim 21 , characterized in that, when the gas bags (120, 140) are inflated, the frontal sections (129, 149) of the first and second gas bags (120, 140) touch or overlap in sections, thereby creating a connection between the first and second gas bags (120, 140) can be produced. Airbag arrangement (100) Claim 21 or 22 , characterized in that the first and the second gas bag (120, 140) each comprise a main chamber (1260, 1460), each main chamber (1260, 1460) forming the shell shape, and in that the first and / or the second gas bag is a secondary chamber (1290), which is fluidly connected to the main chamber (1260) of the first or second gas bag (120). Airbag arrangement (100) Claim 23 , characterized in that the secondary chamber (1290) in the inflated state of the gas bags (120, 140) overlaps with the main chamber (1460) with which it is not fluidly connected, and in particular with this main chamber (1460) by a connecting means (130) connected is. Airbag arrangement (100) Claim 23 or 24th , characterized in that the secondary chamber (1290) in the inflated state of the Gas bags (120, 140) in front of the chest area or in front of the head area of the occupant (P) sitting on the vehicle seat (S). Airbag arrangement (100) according to one of the Claims 23 to 25th , characterized in that the secondary chamber (1290) is arranged on the frontal section (129) of the corresponding main chamber (1260). Vehicle occupant restraint system with a gas bag arrangement (100) according to one of the preceding claims, characterized by at least one inflator for filling the first and second gas bags (120, 140) with a gas, the vehicle occupant restraint system being designed to carry out the first and second Fill gas bag (120, 140) with gas at different times. Vehicle seat (S) with an airbag arrangement (100) according to one of the Claims 1 to 26 , characterized in that the gas bags (120) are at least partially opposite one another in the seat width direction in the folded state, the gas bags (120, 140) in the folded state, for example, in opposite lateral sections of a backrest, a seat surface (F) or a headrest (K ) of the vehicle seat (S) or in opposite armrests (A) of the vehicle seat (S) are arranged. Vehicle seat (S) after Claim 28 , characterized in that the gas bags (120, 140) are detachably attached to the vehicle seat (S) so that they can be separated from the vehicle seat (S) after a triggering event.

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