Airbag module

Abstract

Airbag module, in particular for a motor vehicle, comprising a gas bag (1) and at least one tubular gas generator (2) with a longitudinal axis (3), on which tubular gas generator (2) at least one fastening bolt (6), preferably in the form of a threaded bolt, is arranged for mounting the airbag module (1) on a vehicle component, wherein the gas bag (1) comprises at least one gas bag wall (7), which gas bag wall (7) forms a self-contained space for receiving gas with an inner wall surface (23) and an outer wall surface (22), wherein the gas bag wall (7) comprises at least one gas generator insertion opening (8) and at least one locking tab (11), which has at least one locking opening (14) for securing the locking tab (11) to the at least one fastening bolt (6), wherein the tubular gas generator (2) is at least partially threaded into the gas bag (1) via the gas generator insertion opening (8) such thatthat at least one gas generator outlet (4) of the tubular gas generator (2) projects into the gas bag (1), so that the gas bag (1) can be inflated in an accident situation by means of a gas flowing out of the tubular gas generator (2), characterized in that the securing tab (11) is folded at least partially transversely or obliquely to the longitudinal axis (3) of the tubular gas generator (2) and thereby in the direction of the at least one fastening bolt (6) connected to the tubular gas generator (2) and is thereby secured to the at least one fastening bolt (6) by its at least one securing opening (14).

Description

FIELD OF THE INVENTION

[0001] The present invention relates to an airbag module, in particular for a motor vehicle, according to the preamble of claim 1, a gas bag according to the preamble of claim 27 and an airbag module produced with the steps according to claim 28. BACKGROUND OF THE INVENTION

[0002] It is known that tubular gas generators for filling gas bags or airbags, for example in the case of a side or central airbag, which are arranged in a backrest area of ​​a driver and / or front passenger seat, are arranged in the gas bag for filling with a gas or a gas mixture at least partially via a gas generator introduction opening, wherein at least one fastening bolt is usually arranged on the gas generator for mounting the airbags on the seat. OBJECT OF THE INVENTION

[0003] It is an object of the invention to provide an easy-to-manufacture and cost-effective airbag module which ensures subsequent installation of a gas generator in an already folded gas bag without the otherwise necessary opening and closing of a seam, wherein increased tightness is to be ensured, in particular in the area of ​​a gas generator insertion opening, in order to ensure a high restraint effect of a vehicle occupant during an accident situation.

[0004] Furthermore, the present invention solves the problem of ensuring increased flame protection in order to protect the vehicle occupant from possible burns during an accident situation. GENERAL DESCRIPTION OF THE INVENTION

[0005] These objects are achieved by an airbag module having the features of claim 1, a gas bag having the features of claim 27, and an airbag module produced by the steps of claim 28. Embodiments of the invention are specified in the dependent claims.

[0006] According to this, in a first aspect of the invention, an airbag module is provided, comprising a gas bag and at least one tubular gas generator having a longitudinal axis, on which tubular gas generator at least one fastening bolt, preferably in the form of a threaded bolt, is arranged for arranging the airbag module on a vehicle component, wherein the gas bag comprises at least one gas bag wall, which gas bag wall forms a self-contained space for receiving gas with an inner wall surface and an outer wall surface, wherein the gas bag wall comprises at least one gas generator insertion opening and at least one securing tab, which has at least one securing opening for securing the securing tab to the at least one fastening bolt, wherein the tubular gas generator is threaded at least partially into the gas bag via the gas generator insertion opening in such a way thatthat at least one gas generator outlet of the tubular gas generator protrudes into the gas bag, so that the gas bag can be inflated in an accident situation by means of a gas flowing out of the tubular gas generator.

[0007] According to the invention, the securing tab is at least partially folded transversely or obliquely to the longitudinal axis of the tubular gas generator and in the direction of the at least one fastening bolt connected to the tubular gas generator, and is secured to the at least one fastening bolt through its at least one securing opening. Thus, the invention provides for the securing tab to be folded substantially perpendicularly or obliquely to the longitudinal axis of the gas generator in the direction of the fastening bolt(s) and thus folded back onto the gas generator, counter to the insertion direction of the gas generator.Such an arrangement of the securing tab enables subsequent installation of the gas generator in the already folded airbag, thus also facilitating a possible gas generator replacement and ensuring a high level of process reliability, since the tubular gas generator is only covered in the outer area by the securing tab when installed in the airbag. In other words, such an arrangement allows a tubular gas generator that is at least partially arranged in the airbag to be removed and reinserted via the gas generator insertion opening, even when the airbag is folded. The outer area of ​​the gas generator is at least partially covered by the securing tab.

[0008] The fact that the securing tab is at least partially folded transversely or obliquely to the longitudinal axis of the tubular gas generator means that the fold line or fold seam along which the securing tab is folded does not necessarily run at an angle of 90 degrees to the longitudinal axis of the tubular gas generator. For example, it runs at an angle to the longitudinal axis that lies between 60 degrees and 120 degrees.

[0009] In detail, by such an arrangement of the securing tab in a region of the gas generator insertion opening in the threaded or inserted state of the tubular gas generator, a sealing region is formed by means of the outer wall surface of the gas bag wall, since the securing tab and the outer wall surface of the gas bag form an overlapping region and thus a sealing region which completely encloses a region of a lateral surface of the tubular gas generator.

[0010] The securing tab itself is preferably arranged on the outer wall surface of the gas bag wall by means of a securing seam and / or by means of an adhesive connection, whereby alternative or, if necessary, additional connection forms, for example a clamp or rivet connection, can also be implemented.

[0011] To allow the securing opening of the securing tab to fold over the fastening bolt or to thread the fastening bolt into the securing opening, the securing tab is preferably elongated, preferably tongue-shaped, with the at least one securing opening being arranged opposite the securing seam and / or the adhesive connection. This results in the advantage that no closing seam is required after threading the gas generator into the gas generator insertion opening.

[0012] In this case, the at least one fastening bolt can preferably be arranged on the tubular gas generator via a clamp, wherein in an alternative embodiment it is welded to the tube of the tubular gas generator by means of a weld seam.

[0013] In a preferred embodiment, the gas bag wall also comprises at least one flame-retardant layer on the inner wall surface in the region of the gas generator insertion opening. This layer is preferably arranged on the inner wall surface of the gas bag wall by means of the securing seam, with which the securing tab is also arranged on the gas bag wall, and / or by means of an adhesive connection. By arranging the flame-retardant layer using the securing seam, at least one work step and additional material, for example in the form of a seam or an adhesive material, can be eliminated.

[0014] Furthermore, in a preferred embodiment, the gas bag wall comprises a connecting layer on the outer wall surface, which can preferably be arranged on the outer wall surface of the gas bag wall by means of a connecting seam and / or an adhesive connection. The connecting seam and / or the adhesive connection are arranged offset from a longitudinal axis of the tubular gas generator, thereby allowing the gas generator to be threaded into the gas bag. Specifically, the connecting layer serves to increase load bearing capacity and correctly position the gas bag on a vehicle or seat structure.

[0015] In a preferred embodiment, the connecting layer is designed such that, when the tubular gas generator is threaded into the gas generator insertion opening, it at least partially covers the latter. The connecting layer preferably comprises at least one bolt through-opening for receiving the at least one fastening bolt when the tubular gas generator is threaded into the gas generator insertion opening. By receiving the at least one fastening bolt in the at least one bolt through-opening of the connecting layer, the latter has a load-bearing effect. In other words, the connecting layer can thereby absorb forces acting on the gas bag, in particular during the deployment process. In order to ensure the absorption of higher tensile forces, the at least one bolt through-opening is preferably reinforced by means of a fastening bolt seam.

[0016] In addition, in a further preferred embodiment, the gas bag wall comprises at least one reinforcing layer arranged on the inner wall surface and / or outer wall surface in order to absorb higher tensile forces in the region of the gas generator insertion opening, wherein the reinforcing layer can be arranged on the gas bag wall by means of at least one reinforcing seam and / or an adhesive connection.

[0017] In an alternative embodiment, it is also conceivable to arrange a reinforcement layer on the inner wall surface and on the outer wall surface. In this case, the reinforcement layer serves not only to absorb tensile forces when arranged on the inner wall surface, but also as additional thermal protection, whereas an arrangement of the reinforcement layer on the outer wall surface not only absorbs tensile forces but also serves as protection against possible damage caused by the vehicle or seat structure.

[0018] In a further preferred embodiment, the tubular gas generator comprises two fastening bolts, wherein a first fastening bolt is arranged closer to the gas generator insertion opening than a second fastening bolt. The securing tab is preferably designed such that the securing opening can be arranged on the first fastening bolt. In an alternative embodiment, the securing tab is designed to be elongated, preferably oblique or L-shaped, such that the securing opening can be arranged on the second fastening bolt. It is also conceivable for the securing tab to comprise two securing openings, each of which can be arranged on a fastening bolt.

[0019] In the case of an elongated, preferably angled or L-shaped, securing tab for placement on the second fastening bolt, the connection layer is also correspondingly longer. This ensures rotation of the gas generator when threaded into the gas bag. In detail, with this embodiment, the installation position of the gas generator can be rotated by 90 degrees, allowing a twisted arrangement of the gas generator, for example, on a seat. In other words, the rotational orientation of the bolts can be defined by the length of the connection layer and the securing tab.

[0020] It should be noted at this point that the longitudinal axis(es) of the fastening bolt(s) as well as the securing opening(s) and bolt through opening(s) are located in a common sectional plane of the gas generator when threaded into the gas bag.

[0021] In order to achieve an even higher tightness of the airbag module, in a further preferred embodiment, a sealing means for producing a gas-tight connection is arranged along the reinforcement seam between the reinforcement layer and the gas bag wall and / or along the securing seam between the securing tab and the gas bag wall and / or along the connecting seam between the connecting layer and the gas bag wall.

[0022] In a further preferred embodiment, the gas bag wall comprises at least one additional connection layer on the outer wall surface, which is arranged along the longitudinal axis of the tubular gas generator parallel to the connection layer. The additional connection layer can be arranged on the outer wall surface of the gas bag wall by means of an additional connection seam and / or an adhesive connection. In detail, the additional connection layer at least partially covers the securing tab when the tubular gas generator is threaded into the gas generator insertion opening, wherein the additional connection layer comprises at least one additional bolt insertion opening for receiving the at least one fastening bolt when the tubular gas generator is threaded into the gas generator insertion opening, thereby ensuring increased load absorption when the airbag module is deployed.The at least one additional bolt through-hole is preferably reinforced by means of an additional fastening bolt seam.

[0023] A further embodiment of the invention provides that the securing tab at least partially covers the gas generator insertion opening when the tubular gas generator is not threaded in. This enables a highly gas-tight seal of the gas generator insertion opening by the securing tab and the formation of an effective sealing area.

[0024] In a further aspect of the invention, the present invention relates to a gas bag for an airbag module, comprising the gas bag and at least one tubular gas generator having a longitudinal axis and at least one fastening bolt. The gas bag comprises at least one gas bag wall, which forms a self-contained space for accommodating gas with an inner wall surface and an outer wall surface, wherein the gas bag wall comprises at least one gas generator insertion opening and at least one securing tab, which has at least one securing opening for securing the securing tab to a fastening bolt of a tubular gas generator.It is further provided that the gas generator insertion opening is designed such that a tubular gas generator can be threaded at least partially into the gas bag via the gas generator insertion opening such that at least one gas generator outlet of the tubular gas generator protrudes into the gas bag, so that the gas bag can be inflated in an accident situation by means of a gas flowing out of the tubular gas generator.

[0025] In this further aspect of the invention, the invention provides that the securing tab is designed and arranged in such a way that it can be folded at least partially transversely or obliquely to the longitudinal axis of a tubular gas generator inserted into the gas generator insertion opening and in the direction of at least one fastening bolt connected to the tubular gas generator and can be secured to such a fastening bolt through its at least one securing opening.

[0026] The gas bag according to the invention according to claim 27 corresponds to the gas bag of the airbag module according to claim 1. The embodiments according to claims 2-26 for the airbag module also apply accordingly to the gas bag according to the invention.

[0027] In a further aspect, the present invention relates to an airbag module. The airbag module is characterized by the following steps in its manufacture: - introducing at least one gas generator outlet of a tubular gas generator into a gas generator insertion opening of a gas bag wall which forms an inner wall surface and an outer wall surface; - folding a securing tab attached to the outer wall surface of the gas bag wall at least partially transversely or obliquely to the longitudinal axis of the tubular gas generator in the direction of at least one fastening bolt of the tubular gas generator; and - Attaching a securing opening of the securing tab to the at least one fastening bolt.

[0028] One embodiment of this provides for the following steps to be implemented during the manufacture of the airbag module: - partially folding a connecting layer attached to the outer wall surface of the gas bag wall around a longitudinal axis of the tubular gas generator; and - Threading a fastening bolt connected to the tubular gas generator into a bolt through opening of the connection layer.

[0029] In an embodiment in which the securing tab is elongated, preferably oblique or L-shaped, and the connection layer is correspondingly also longer, the tubular gas generator is rotated about the longitudinal axis in a subsequent step such that the connection layer is tensioned.

[0030] In a further embodiment, the tubular gas generator can be rotated around its longitudinal axis, allowing the installation position of the gas generator to be determined depending on the length of the connection layer and the securing tab. The securing tab is only threaded in after the rotation, thus ensuring the correct alignment of at least one fastening bolt and the insertion depth of the generator into the gas bag.

[0031] If an additional connection layer is arranged parallel to the connection layer, this is then folded around the securing tab and the at least one fastening bolt connected to the tubular gas generator is threaded into an additional bolt through-hole of the additional connection layer, so that the additional connection layer at least partially encloses the securing tab, thereby ensuring increased load absorption in the event of deployment of the airbag module.

[0032] The airbag module according to any one of claims 1-26 is assembled, for example, by the following steps: - introducing at least one gas generator outlet of a tubular gas generator into a gas generator insertion opening of a gas bag wall which forms an inner wall surface and an outer wall surface; - folding a securing tab attached to the outer wall surface of the gas bag wall at least partially transversely or obliquely to the longitudinal axis of the tubular gas generator in the direction of at least one fastening bolt of the tubular gas generator; and - Attaching a securing opening of the securing tab to the at least one fastening bolt. SHORT DESCRIPTION OF THE CHARACTERS

[0033] To further explain the invention, reference is made in the following part of the description to the figures, from which further advantageous embodiments, details, and developments of the invention can be seen. Herein: Fig. 1 a longitudinal sectional view AA of an airbag module according to the invention with a threaded gas generator according to Fig. 4 in the unfolded state; Fig. 2 a front view of the airbag module according to the invention without a threaded gas generator in the unfolded state; Fig. 3 a rear view of the airbag module according to the invention without a threaded gas generator in the unfolded state; Fig. 4 a rear view of the airbag module according to the invention with threaded gas generator in the unfolded state; Fig. 5 a front perspective view of the airbag module according to the invention with threaded gas generator in the folded state; Fig. 6 a rear perspective view of the airbag module according to the invention with threaded gas generator in the folded state; Fig. 7 a front view of another embodiment of the airbag module according to the invention without a threaded gas generator in the unfolded state; Fig. 8 a front view of another embodiment of the airbag module according to the invention without a threaded gas generator in the unfolded state; Fig. 9 a front perspective view of the inventive embodiment of the airbag module according to the invention according to Fig. 7 with threaded gas generator in folded state; Fig. 10 a rear perspective view of the inventive embodiment of the airbag module according to the invention according to Fig. 7 with threaded gas generator in folded state; Fig. 11 is a front view of another embodiment of the airbag module according to the invention without a threaded gas generator in the unfolded state; Fig. 12 a front perspective view of the inventive embodiment of the airbag module according to the invention according to Fig. 11 with threaded gas generator in folded state; Fig. 13 a rear perspective view of the inventive embodiment of the airbag module according to the invention according to Fig. 11 with threaded gas generator in folded state; Fig. 14 is a front perspective view of another embodiment of the airbag module according to the invention with a threaded gas generator in the folded state; Fig. 15 a rear perspective view of the inventive embodiment of the airbag module according to the invention according to Fig. 14 with threaded gas generator in folded state; WAYS OF IMPLEMENTING THE INVENTION

[0034] Fig. 1 shows a longitudinal sectional view AA of an airbag module according to the invention with a tubular gas generator 2 threaded into a gas bag 1 in the unfolded state. The tubular gas generator 2, which has a longitudinal axis 3, has two fastening bolts 6, each of which is arranged on the tubular gas generator 2 by means of a clamp 5, for arranging the airbag module on a vehicle component. The gas bag 1 comprises a gas bag wall 7, which forms a self-contained space for receiving gas and has an inner wall surface 23 and an outer wall surface 22, wherein the gas bag wall 7 has a gas generator insertion opening 8 and a securing tab 11 arranged on the outer wall surface 22 of the gas bag wall 7, which has a securing opening 14 for securing the securing tab 11 to at least one of the fastening bolts 6.The tubular gas generator 2 is threaded into the gas generator insertion opening 8 at least far enough that a gas generator outlet 4 of the tubular gas generator 2 protrudes into the airbag 1, such that the airbag 1 can be inflated in an accident situation by means of a gas or gas mixture flowing out of the tubular gas generator 2. A sealing area 21 is formed in the region of the gas generator insertion opening 8, whereby an outflow of the gas or gas mixture flowing out of the tubular gas generator 2 from the airbag 1 can be avoided. In addition, a reinforcing layer 9 is arranged on the inner wall surface 23 of the airbag wall 7 in the region of the gas generator insertion opening 8, whereby the airbag 1 can withstand higher compressive and tensile forces, particularly in the region of the gas generator insertion opening 8, if deployed in an accident situation.

[0035] In addition, a connection layer 16 is arranged on the outer wall surface 22 of the gas bag wall 7, offset from the longitudinal axis 3 of the tubular gas generator 2, which according to Fig. 2 is arranged by means of a connecting seam 17. The connecting layer 16 is designed such that, when the tubular gas generator 2 is threaded into the gas generator insertion opening 8, it at least partially covers the latter and has two bolt through openings 18 for receiving the fastening bolts 6 of the tubular gas generator 2 in the gas generator insertion opening 8. Furthermore, the gas bag wall 7 has a flame-retardant layer 20 on the inner wall surface 23 in the region of the gas generator insertion opening 8 to protect against any hot gas jet from the gas generator 2 upon its activation.

[0036] The gas generator 2 is to be inserted into the gas bag 1 in the direction of the securing tab 11, ie in the present case from top to bottom, whereby a plug access 29 is also defined.

[0037] Fig. Figure 2 shows a front view of the airbag module according to the invention without a threaded gas generator 2 in the unfolded state. The connecting seam 17, with which the connecting layer 16 is arranged offset to a longitudinal axis 3 of the tubular gas generator 2, is clearly visible. In the illustrated embodiment, the bolt through-holes 18 are also reinforced by means of a fastening bolt seam 19, thereby ensuring a higher tensile force upon activation of the gas generator 2 in an accident situation. The securing tab 11 is arranged by means of a securing seam 12 on the outer wall surface 22 of the gas bag wall 7. Fig. 2 clearly shows that the securing seam 12 is C-shaped with a connecting web 13. This serves to ensure access to the gas generator insertion opening 8, which is covered by the securing tab 11. It should be noted at this point that it is also conceivable to reinforce the securing opening 14 of the securing tab 11 with a seam to absorb higher forces.

[0038] It is pointed out that in the Fig. 2 by the C-shaped securing seam 12 with connecting web 13, a fold line 30 or folding edge is formed for the securing tab 11, along which the movable, unsewn part of the securing tab 11 can be folded. The fold line or folding edge 30 runs transversely (or alternatively diagonally) to the longitudinal axis 3 of the tubular gas generator 2 when the latter is threaded in, so that the movable part of the securing tab 11 can be folded around the folding edge 30 and thus transversely (or alternatively diagonally) to the longitudinal axis 3 of the tubular gas generator 2 and in the direction of the fastening bolts 6. The fastening bolt 6, which is closer to the gas generator insertion opening 8, is connected to the securing opening 14 of the securing tab 11, or the securing tab 11 is secured to the fastening bolt 6 through its securing opening 14. As can be seen from the Fig. 7-15, alternatively, the securing opening 14 can be connected to the other fastening bolt 6 further away from the gas generator insertion opening 8, or two securing openings can be provided, each connected to one of the two fastening bolts 6.

[0039] It should also be noted that the shape and orientation of the securing seam 12 with the connecting web 13 are merely exemplary. In principle, any shape of securing seam can be provided that defines a folding edge that allows a portion of the securing tab 11 to be folded transversely or obliquely to the longitudinal axis 3 of the tubular gas generator 2 and thereby in the direction of the fastening bolts 6. In some embodiments, the folding edge can also run parallel to the securing seam rather than along the securing seam.

[0040] Fig. Figure 3 shows a rear view of the airbag module according to the invention without the threaded gas generator 2 in the unfolded state. It is clearly visible that the reinforcement layer 9 is arranged on the inner wall surface 23 of the gas bag wall 7 by means of a reinforcement seam 10. The flame-retardant layer 20, like the gas bag wall 7, has the gas generator insertion opening 8, with the flame-retardant layer 20 being arranged on the inner wall surface 23 of the gas bag wall 7 by means of the securing seam 12 of the securing tab 11.

[0041] Fig. Figure 4 shows a rear view of the airbag module according to the invention with the threaded gas generator 2 in the unfolded state. It is clearly visible that only the gas generator outlet 4 of the tubular gas generator 2 protrudes into the airbag 1, thus enabling possible replacement as well as subsequent installation and removal of the gas generator 2.

[0042] Fig. Figure 5 shows a front perspective view of the airbag module according to the invention with the gas generator 2 threaded through in the folded state. First, the connecting layer 16 is partially looped over the gas generator 2 in the longitudinal direction, so that the fastening bolts 6 are arranged in the bolt insertion openings 18 of the connecting layer 16. Only then is the securing tab 11 folded over the gas generator 2 in the longitudinal direction, so that the fastening bolt 6 arranged closer to the gas generator insertion opening 8 is arranged in the securing opening 14 of the securing tab 11. The folding of the securing tab 11 takes place around the Fig. 2 explained folding edge 30. According to the above explanations, the gas generator 2 is to be inserted in the direction of the securing tab 11 into the gas bag 1, ie in the present case from top to bottom, whereby the plug access 29 is also determined, see also Fig. 6, Fig. 9, Fig. 10, Fig. 12, Fig. 13, Fig. 14 and Fig. 15.

[0043] Fig. Figure 6 shows a rear perspective view of the airbag module according to the invention with the threaded gas generator 2 in the folded state. It is clearly visible how the fastening bolts 6, the securing opening 14, and the bolt through-holes 18 of the connection layer 16 are located on a sectional plane of the gas generator 2.

[0044] Fig. Figure 7 shows a front view of another embodiment of the airbag module according to the invention without the threaded gas generator 2 in the unfolded state. In contrast to the embodiment shown in Fig. 2 that the connection layer 16 and the securing tab 11 are designed to be significantly longer, with the bolt insertion openings 18 and the securing opening 14 lying along an auxiliary line 24 which is offset from the longitudinal axis 3 of the gas generator 2. In detail, the securing tab 11 in this embodiment is designed to be inclined or L-shaped in such a way that an arrangement of the securing opening 14 on the fastening bolt 6 further away from the gas generator insertion opening 8 is possible, wherein the inclination or L-shape prevents the closer fastening bolt 6 from coming into contact with the securing tab 11.

[0045] Fig. 8, however, shows an embodiment in which the securing tab 11 is triangular in shape, wherein the securing tab 11 comprises, in addition to the securing opening 14, which is provided for arranging the more distant fastening bolt 6, a securing elongated hole 15, in which the closer fastening bolt 6 can be arranged.

[0046] By such a design of the connection layer 16 as well as the securing tab 11 according to Fig. 7 and Fig. 8 - i.e., L-shaped as well as triangular - a rotation of the gas generator 2, which is arranged at least partially in the gas bag 1, is possible, namely until the connection layer 16 is tensioned. In detail, a 90-degree rotation of the gas generator 2 is feasible, thereby ensuring the use of the airbag module according to the invention in other areas of a vehicle interior.

[0047] Fig. 9 shows a front perspective view of the embodiment of the invention according to Fig. 7 of the airbag module according to the invention with the gas generator 2 threaded in the folded state. Here, it is clearly visible that the fastening bolts 6 are angled 90 degrees to the airbag module, in contrast to Fig. 5 and Fig. 6 are twisted.

[0048] Fig. 10 shows a rear perspective view of the embodiment of the invention according to Fig. 7 and Fig. 9 of the airbag module according to the invention with the threaded gas generator 2 in the folded state. It can be seen that the securing tab 11 is designed to be oblique and long, or L-shaped, such that the securing opening 14 is located on the fastening bolt 6 further away from the gas generator insertion opening 8, while the closer fastening bolt 6 does not come into contact with the securing tab 11.

[0049] Fig. Figure 11 shows a front view of another embodiment of the airbag module according to the invention without the threaded gas generator 2 in the unfolded state. In contrast to the embodiment shown in Fig. 8 shows that an additional connection layer 25 is arranged on the outer wall surface 22 of the gas bag wall 7 by means of an additional connection seam 26, wherein the additional connection layer 25 also comprises, in accordance with the connection layer 16, two additional bolt through-holes 27 and an additional fastening bolt seam 28. With the help of this additional connection layer 25, which at least partially encloses the securing tab 11, increased load absorption is ensured when the airbag module is deployed.

[0050] Fig. 12 shows a front perspective view of the inventive embodiment of the airbag module according to the invention according to Fig. 11 with threaded gas generator 2 in the folded state, wherein the additional connection layer 25 at least partially encloses the securing tab 11.

[0051] Fig. 13 shows a rear perspective view of the inventive embodiment of the airbag module according to the invention according to Fig. 11 with the gas generator 2 threaded through in the folded state. It can be seen that the two fastening bolts 6 are threaded into the two additional bolt through-holes 27 of the additional connection layer 25, with the additional bolt through-holes 27 of the additional connection layer 25 being reinforced by the additional fastening bolt seam 28.

[0052] Fig. 14 shows a front perspective view of a further embodiment of the airbag module according to the invention with threaded-in gas generator 2 in the folded state. In this embodiment, however, the gas generator 2 is to be inserted into the gas bag 1 in a direction opposite to the above embodiments, whereby the plug access 29 also runs in the opposite direction, i.e. in the present case from bottom to top. It follows from this that the securing tab 11 arranged by means of the securing seam 12 on the outer wall surface 22 of the gas bag wall 7 of the gas bag 1 is also arranged in the opposite direction, i.e. above, to the connecting layer 16 arranged by means of the connecting seam 17 on the outer wall surface 22 of the gas bag wall 7 of the gas bag 1.

[0053] Fig. 15 shows a rear perspective view of the inventive embodiment of the airbag module according to the invention according to Fig. 14 with the gas generator 2 threaded in the folded state. It can be seen that the securing tab 11 is in accordance with Fig. 8, i.e., triangular. It can also be seen that, accordingly, the securing slot 15 of the securing tab 11 arranged above the connection layer 16 loosely wraps around the fastening bolt 6 assigned to it, while the securing opening 14 tightly wraps around the associated fastening bolt 6, which is arranged closer to the connector access 29, so that the securing tab 11 is retained primarily by means of the securing opening 14 when the airbag module is deployed. LIST OF REFERENCE SYMBOLS 1 gas bag; 2 tubular gas generator; 3 Longitudinal axis of the tubular gas generator 2; 4 gas generator outlet; 5 clamp; 6 fastening bolts; 7 gas bag wall; 8 gas generator insertion opening; 9 reinforcement layer; 10 reinforcement seam; 11 securing tab; 12 securing seam; 13 Connecting web of the securing seam 12; 14 safety opening; 15 securing slot; 16 connection location; 17 connecting seam; 18 Bolt through opening of the connection layer 16; 19 Fastening bolt seam of connection layer 16; 20 flame retardant layer; 21 sealing area; 22 exterior wall area; 23 interior wall surface; 24 auxiliary line; 25 Additional connection position; 26 Additional connection seam; 27 Additional bolt through opening of the additional connection layer 25; 28 Additional fastening bolt weld of the additional connection layer 25; 29 plug access; 30 fold line.

Claims

[1] An airbag module, in particular for a motor vehicle, comprising a gas bag (1) and at least one tubular gas generator (2) with a longitudinal axis (3), on which tubular gas generator (2) at least one fastening bolt (6), preferably in the form of a threaded bolt, is arranged for arranging the airbag module (1) on a vehicle component, wherein the gas bag (1) comprises at least one gas bag wall (7), which gas bag wall (7) forms a self-contained space for receiving gas with an inner wall surface (23) and an outer wall surface (22), wherein the gas bag wall (7) comprises at least one gas generator insertion opening (8) and at least one securing tab (11) which has at least one securing opening (14) for securing the securing tab (11) to the at least one fastening bolt (6), wherein the tubular gas generator (2) is at least partially threaded into the gas bag (1) via the gas generator insertion opening (8) in such a way thatthat at least one gas generator outlet (4) of the tubular gas generator (2) projects into the gas bag (1), so that the gas bag (1) can be inflated in an accident situation by means of a gas flowing out of the tubular gas generator (2), , characterized by that the securing tab (11) is at least partially folded transversely or obliquely to the longitudinal axis (3) of the tubular gas generator (2) and in the direction of the at least one fastening bolt (6) connected to the tubular gas generator (2) and is secured to the at least one fastening bolt (6) by its at least one securing opening (14). [2] Airbag module according to claim 1, characterized by that the securing tab (11) can be arranged on the outer wall surface (22) of the gas bag wall (7) by means of a securing seam (12) and / or by means of an adhesive connection. [3] Airbag module according to claim 1 or 2, characterized bythat the securing tab (11) is elongated, preferably tongue-shaped, wherein the at least one securing opening (14) is arranged opposite the securing seam (12) and / or the adhesive connection. [4] Airbag module according to one of the preceding claims, characterized by that the at least one fastening bolt (6) can be arranged on the tubular gas generator (2) via a clamp (5). [5] Airbag module according to one of the preceding claims, characterized by that the gas bag wall (7) comprises at least one flame protection layer (20) on the inner wall surface (23) in the region of the gas generator insertion opening (8). [6] Airbag module according to claim 5, characterized by that the flame-retardant layer (20) can be arranged on the inner wall surface (23) of the gas bag wall (7) by means of the securing seam (12) and / or by means of an adhesive connection. [7] Airbag module according to one of the preceding claims, characterized bythat the gas bag wall (7) comprises at least one connecting layer (16) on the outer wall surface (22). [8] Airbag module according to claim 7, characterized by that the connecting layer (16) can be arranged on the outer wall surface (22) of the gas bag wall (7) by means of a connecting seam (17) and / or an adhesive connection. [9] Airbag module according to claim 8, characterized by that the connecting seam (17) and / or the adhesive connection is arranged offset to a longitudinal axis (3) of the tubular gas generator (2). [10] Airbag module according to one of claims 7 to 9, characterized by that the connecting layer (16) at least partially covers the tubular gas generator (2) in the threaded state in the gas generator insertion opening (8). [11] Airbag module according to one of claims 7 to 10, characterized bythat the connection layer (16) comprises at least one bolt through-opening (18) for receiving the at least one fastening bolt (6) in the threaded state of the tubular gas generator (2) in the gas generator insertion opening (8). [12] Airbag module according to claim 11, characterized by that the at least one bolt through opening (18) is reinforced by means of a fastening bolt seam (19). [13] Airbag module according to one of the preceding claims, characterized by that the gas bag wall (7) in the region of the gas generator insertion opening (8) comprises at least one reinforcing layer (9) arranged on the inner wall surface (23) and / or outer wall surface (22). [14] Airbag module according to claim 13, characterized by that the reinforcement layer (9) can be arranged on the gas bag wall (7) by means of at least one reinforcement seam (10) and / or an adhesive connection. [15] Airbag module according to one of the preceding claims, characterized bythat in a region of the gas generator insertion opening (8) in the threaded state of the tubular gas generator (2) a sealing region (21) is formed by means of the outer wall surface (22) of the gas bag wall (7) and the securing tab (11). [16] Airbag module according to one of the preceding claims, characterized by that the tubular gas generator (2) comprises two fastening bolts (6), wherein a first fastening bolt (6) is arranged closer to the gas generator insertion opening (8) than a second fastening bolt (6). [17] Airbag module according to claim 16, characterized by that the securing tab (11) is designed such that the securing opening (14) can be arranged on the first fastening bolt (6). [18] Airbag module according to claim 16, characterized by that the securing tab (11) is designed to be elongated, preferably oblique or L-shaped, such that the securing opening (14) can be arranged on the second fastening bolt (6). [19] Airbag module according to claim 16, characterized by that the securing tab (11) comprises two securing openings (14) or one securing opening (14) and one securing elongated hole (15), each of which can be arranged on a fastening bolt (6). [20] Airbag module according to one of the preceding claims, characterized by that a sealing means for producing a gas-tight connection is arranged along the reinforcement seam (10) between the reinforcement layer (9) and the gas bag wall (7) and / or along the securing seam (12) between the securing tab (11) and the gas bag wall (7) and / or along the connecting seam (17) between the connecting layer (16) and the gas bag wall (7). [21] Airbag module according to one of the preceding claims, characterized bythat the gas bag wall (7) comprises on the outer wall surface (22) at least one additional connection layer (25) which is arranged along the longitudinal axis (3) of the tubular gas generator (2) parallel to the connection layer (16). [22] Airbag module according to claim 21, characterized by that the additional connection layer (25) can be arranged on the outer wall surface (22) of the gas bag wall (7) by means of an additional connection seam (26) and / or an adhesive connection. [23] Airbag module according to claim 21 or 22, characterized by that the additional connection layer (25) at least partially covers the securing tab (11) in the threaded state of the tubular gas generator (2) in the gas generator insertion opening (8). [24] Airbag module according to one of claims 21 to 23, characterized bythat the additional connection layer (25) comprises at least one additional bolt through-opening (27) for receiving the at least one fastening bolt (6) in the threaded state of the tubular gas generator (2) in the gas generator insertion opening (8). [25] Airbag module according to claim 24, characterized by that the at least one additional bolt through-opening (27) is reinforced by means of an additional fastening bolt seam (28). [26] Airbag module according to one of the preceding claims, characterized by that the gas generator insertion opening (8) is at least partially covered by the securing tab (11) when the tubular gas generator (2) is not threaded in. [27] Gas bag (1) for an airbag module, which comprises the gas bag (1) and at least one tubular gas generator (2) with a longitudinal axis (3) and at least one fastening bolt (6), wherein the gas bag (1) comprises at least one gas bag wall (7), which gas bag wall (7) forms a self-contained space for receiving gas with an inner wall surface (23) and an outer wall surface (22), wherein the gas bag wall (7) comprises at least one gas generator insertion opening (8) and at least one securing tab (11), which has at least one securing opening (14) for securing the securing tab (11) to a fastening bolt (6) of a tubular gas generator (2), wherein the gas generator insertion opening (8) is designed such that a tubular gas generator (2) can be threaded at least partially into the gas bag (1) via the gas generator insertion opening (8) such that at least one gas generator outlet (4) of the tubular gas generator (2) protrudes into the gas bag (1),so that the gas bag (1) can be inflated in an accident situation by means of a gas flowing out of the tubular gas generator (2), , characterized by that the securing tab (11) is designed and arranged in such a way that it can be folded at least partially transversely or obliquely to the longitudinal axis (3) of a tubular gas generator (2) inserted into the gas generator insertion opening (8) and in the direction of at least one fastening bolt (6) connected to the tubular gas generator (2) and can be secured to such a fastening bolt (6) through its at least one securing opening (14). [28] Airbag module manufactured by the steps: - introducing at least one gas generator outlet (4) of a tubular gas generator (2) into a gas generator insertion opening (8) of a gas bag wall (7) which forms an inner wall surface (23) and an outer wall surface (22); - folding a securing tab (11) attached to the outer wall surface (22) of the gas bag wall (7) at least partially transversely or obliquely to the longitudinal axis (3) of the tubular gas generator (2) in the direction of at least one fastening bolt (6) of the tubular gas generator (2); and - Fastening a securing opening (14) of the securing tab (11) to the at least one fastening bolt (6). [29] Airbag module according to claim 28, manufactured by the further steps: - partially folding a connecting layer (16) attached to the outer wall surface (22) of the gas bag wall (7) around a longitudinal axis (3) of the tubular gas generator (2); and - Threading a fastening bolt (6) connected to the tubular gas generator (2) into a bolt through-hole (18) of the connection layer (16). [30] Airbag module according to claim 29, wherein the tubular gas generator (2) is rotated about the longitudinal axis (3) such that the connecting layer (16) is tensioned. [31] Airbag module according to claim 29 or 30, wherein an additional connection layer (25) arranged parallel to the connection layer (16) is folded around the securing tab (11) and the at least one fastening bolt (6) connected to the tubular gas generator (2) is threaded into an additional bolt through-opening (27) of the additional connection layer (25) so that the additional connection layer (25) at least partially encloses the securing tab (11).

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