Airbag module, airbag assembly and device for protecting an occupant of a vehicle

Abstract

This utility model relates to an airbag module, an airbag assembly, and a device for protecting vehicle occupants. The airbag module is for mounting on a seatbelt and includes: an airbag (150) having a storage state in which it is rolled up and / or folded; a fabric air duct (140) fluidly connected to the airbag in an airtight manner; a webbing channel member configured to be fixed to the airbag to form a webbing channel through which the seatbelt webbing (110) passes; and a cover (160) for enclosing the airbag in the storage state. The cover (160) is constructed as a sheet and has a zipper (162), which forms a cylindrical shape to enclose and secure the airbag in the storage state. This utility model also relates to an airbag assembly and a device (100) for protecting vehicle occupants.

Description

Technical Field

[0001] This utility model relates to an airbag module, an airbag assembly, and a device for protecting vehicle occupants. Background Technology

[0002] Seat belts and airbags are arguably the two most widely used safety devices in motor vehicles. In the event of a collision, seat belts secure occupants to their seats, preventing them from shifting due to inertia, while airbags protect occupants from impacts that could cause injury. Airbags are typically located in front of the front-seat occupants, for example, within the steering wheel or dashboard.

[0003] Currently, the development of autonomous driving is accelerating. The application of autonomous driving eliminates the need for drivers to navigate in traditional ways. Vehicle manufacturers are free to utilize passenger compartment space without being limited by traditional passenger layouts (e.g., all passengers facing forward) or vehicle structural configurations (e.g., steering wheel / dashboard configuration). This presents challenges for airbag installation.

[0004] Existing technologies know of solutions that combine seat belts and airbags. However, according to existing technologies, assembling the airbag onto the seat belt is time-consuming and labor-intensive. Therefore, there is a need for further improvements. Utility Model Content

[0005] The purpose of this invention is to provide an improved airbag module, an improved airbag assembly, and an improved device for protecting vehicle occupants, which at least overcome some of the shortcomings of the prior art.

[0006] According to one aspect of the present invention, an airbag module is provided for installation on a seat belt. The airbag module includes: an airbag having a storage state in which the airbag is rolled up and / or folded; a fabric air duct connected in fluid communication with the airbag in an airtight manner; a webbing channel member configured to be fixed to the airbag to form a webbing channel through which the webbing of the seat belt passes; and a cover member for packaging the airbag in the storage state. The cover member is constructed as a sheet and has a zipper, and the cover member is formed into a cylindrical shape by means of the zipper to package and fix the airbag in the storage state.

[0007] In one embodiment, the cover has a narrowing structure at both ends along its longitudinal direction and a widening dimension in the middle region that adapts to the shape of the airbag in its stored state. Preferably, the dimension of the narrowing structure is adapted to the dimension of the seat belt webbing. Preferably, the cover fits snugly against the airbag in its stored state in the middle region.

[0008] In one embodiment, the zipper extends over the entire length of the cover.

[0009] In one embodiment, the covering has a patterned structure on its outer surface, the patterned structure being an embroidered part, an embossed part, a printed part, and / or a laser-engraved part.

[0010] In one embodiment, the covering has at least a partial layer of foamed material on its inner surface.

[0011] In one embodiment, the fabric air duct is introduced into the air bag. Preferably, the end of the fabric air duct is sewn inside the air bag.

[0012] In one embodiment, a flow guide is provided inside the air bag, and the output end of the fabric air guide tube in the air bag is guided toward the flow guide. Preferably, the flow guide is constructed in a dock-like shape. Preferably, the flow guide has a heat-insulating layer on the surface of the flow guide facing the output end of the fabric air guide tube. Preferably, the heat-insulating layer is a silicone layer.

[0013] In one embodiment, in the stored state of the airbag, the cover completely encloses the airbag and at least partially encloses the fabric air duct. In another embodiment, the cover includes a weakened region that, when the airbag is inflated, can break off to release the airbag when the force on the cover exceeds a first threshold.

[0014] This utility model also proposes an airbag assembly for installation on a seat belt. The airbag assembly includes: an airbag module according to this utility model; a gas generator for providing inflation fluid; and a metal tube, one end of which is airtightly connected to the gas generator and the other end of which is airtightly connected to a fabric air duct.

[0015] This invention also proposes a device for protecting vehicle occupants, comprising: an airbag assembly according to this invention; and a seat belt, wherein the airbag module of the airbag assembly is mounted on the webbing of the lap belt portion of the seat belt. Preferably, the airbag module is secured to the webbing at both ends by a connecting line, particularly a stitching line, transverse to the seat belt webbing.

[0016] In summary, the airbag module, airbag assembly, or device for protecting vehicle occupants according to this invention achieves a simple and cost-effective installation and fixation. In particular, the airbag module or airbag assembly of this invention can be formed as a pre-assembled part, which can be conveniently assembled in an assembly line, thereby saving time, labor, and costs. Particularly advantageously, the technical solution according to this invention can easily achieve automated assembly. Advantageously, this invention enables reliable release of the airbag for occupant protection when the airbag is inflated.

[0017] It should be noted that the individual technical features already mentioned, as well as the individual technical features to be mentioned below and the individual technical features that can be derived from the accompanying drawings, can be arbitrarily combined with each other, as long as the combined technical features are not contradictory. Attached Figure Description

[0018] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings, in which:

[0019] exist Figure 1 The image shows a schematic side view of a device for protecting vehicle occupants according to an embodiment of the prior art, wherein the airbag is in the deployed state.

[0020] exist Figure 2 It shows Figure 1 A schematic front view of a device for protecting vehicle occupants, wherein the airbag is in the deployed state.

[0021] exist Figure 3 The image shows an assembly structure of an airbag module and a seatbelt according to an embodiment of the prior art, wherein the airbag is in the deployed state.

[0022] exist Figure 4 The image shows an assembly structure of an airbag module and a seatbelt according to an embodiment of the prior art, wherein the airbag is in a stored state.

[0023] exist Figure 5 The diagram shows a schematic perspective view of an embodiment of an airbag module according to the present invention, together with seat belt webbing, wherein the airbag is in a stored state.

[0024] exist Figure 6 It shows Figure 5 A schematic 3D view of the airbag module and seatbelt webbing from an oblique angle.

[0025] exist Figure 7 It shows Figure 5 A schematic 3D view of the airbag module and seatbelt webbing from a slightly downward angle.

[0026] exist Figure 8 The diagram shows a schematic perspective view of another embodiment of the airbag module according to the present invention, together with the seat belt webbing, wherein the airbag is in a stored state.

[0027] exist Figure 9 The diagram shows a schematic perspective view of one embodiment of the airbag module cover according to the present invention.

[0028] exist Figure 10 The diagram shows a schematic perspective view of an embodiment of an airbag module according to the present invention, wherein the airbag is in a storage state.

[0029] exist Figure 11 It shows Figure 10 A schematic perspective view of the air bag along with the fabric air duct.

[0030] exist Figure 12 The diagram shows a schematic perspective view of one embodiment of a device for protecting vehicle occupants according to the present invention, wherein the airbag is in a stored state. Detailed Implementation

[0031] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many ways other than those described herein, and those skilled in the art can make similar extensions without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0032] It should be noted that the singular form in this document also includes the plural form, unless specifically mentioned in the wording. Furthermore, the use of "comprise" or "include" in this document to refer to components, steps, operations, and elements means that at least one other component, step, operation, or element may be present or added to it. The terms "first," "second," etc., appearing in this document are merely for the convenience of description and to distinguish different components with the same name, and do not indicate a sequential or primary / secondary relationship between the components.

[0033] exist Figure 1 The image shows a schematic side view of a device 200 for protecting vehicle occupants in an deployed state, according to an embodiment of the prior art. Figure 2 It shows Figure 1 A schematic front view of the device 200 for protecting vehicle occupants in its deployed state. Figure 2 In the image, the occupant seated in the seat is indicated schematically by a dashed line.

[0034] like Figure 1 and Figure 2 As shown, the vehicle seat 220 includes a backrest portion 222, a seat portion 224, and a headrest portion 226. The seat portion 224 has an adjustable recline position. The vehicle seat 220 also includes a base that is connected to the vehicle (e.g., connected to the floor). The device 200 for protecting vehicle occupants includes a seat belt 210 and an airbag assembly 260.

[0035] The seatbelt 210 may, for example, employ a three-point configuration. In this three-point configuration, the seatbelt webbing is divided into three sections: a first section 212, a second section 214, and a third section 216. The seatbelt webbing connects to a seatbelt retractor 213 at a first end via the first section 212, which is, for example, mounted to the side structure of the vehicle seat 220. Starting from the seatbelt retractor 213, the first section 212 of the seatbelt webbing passes through a shoulder loop 215 mounted to the vehicle structure and transitions to the second section 214 of the seatbelt webbing. The second section 214 of the seatbelt webbing serves as a chest webbing that restrains the occupant's chest. The second section 214 of the seatbelt webbing extends from the shoulder loop 215 to the latch 217, which is slidable along the seatbelt webbing. The latch 217 allows the occupant to pull the seatbelt webbing from the seatbelt retractor, around the occupant's torso, and extend to the seatbelt buckle assembly mounted to the vehicle structure, where it is loosely secured. With the seatbelt webbing secured to the seatbelt buckle assembly via the latch 217, the seatbelt webbing extends from the latch 217 via the third section 216 to the anchor 218 mounted to the vehicle structure. The third section 216 of the seatbelt webbing serves as a lap belt (belt band) that restrains the occupant's waist. As clearly seen in the diagram, in the usable state, the first section 212 of the seatbelt webbing extends between the seatbelt retractor 213 and the shoulder loop 215; the second section 214 extends between the shoulder loop 215 and the latch 217 (or seatbelt buckle assembly); and the third section 216 extends between the latch 217 and the anchor 218. Advantageously, the seatbelt retractor 213, shoulder loop 215, seatbelt buckle assembly, and anchor 218 are all mounted to the vehicle seat 220. Thus, the vehicle seat 220 can be adjusted to various desired positions and / or orientations without obstructing the use of the seatbelt, which is particularly advantageous in autonomous driving applications.

[0036] exist Figure 1 and Figure 2In one embodiment, the airbag assembly 260 is fixedly mounted on a third segment 216 of the seatbelt webbing, which serves as the waist webbing. The airbag assembly 260 includes an airbag module, which includes an airbag 262 and a cover 268 for packaging the airbag 262 in a storage state where the airbag is rolled up and / or folded.

[0037] exist Figure 3 and Figure 4 The image shows an assembly structure of an airbag module and seatbelt webbing according to an embodiment of the prior art, wherein... Figure 3 The airbag 262 is shown to be in the deployed state. Figure 4 The airbag 262 is shown in a stored state, packaged in a cover 268. In this prior art, the airbag 262 is sewn to the third segment 216 of the seatbelt webbing, which serves as the waist webbing, by means of stitches extending along the longitudinal direction of the seatbelt webbing (i.e., the direction X in which the seatbelt webbing extends longitudinally). To reliably secure the airbag 262 to the seatbelt webbing, it is advantageous to sew the airbag 262 to the seatbelt webbing using multiple longitudinal stitches (e.g., ...). Figure 3 (As shown), thus preventing the airbag from unintentionally detaching from the seatbelt webbing when the airbag deploys. After the airbag 262 is secured to the seatbelt webbing, the airbag 262 is rolled up and / or folded, then covered by the covering 268, and finally the covering 268 is sewn to the seatbelt webbing so that the airbag 262 is held in its stored state on the seatbelt (e.g., as shown). Figure 4 (As shown).

[0038] See also Figure 1 and Figure 2 The airbag assembly 260 also includes a gas generator 266 and a conduit 264. The gas generator 266 is in fluid communication with the airbag 262 via the conduit 264 to inflate the airbag 262, for example, in the event of a vehicle collision, so that the cladding 268 can release the airbag 262 by rupture or breakage and allow the airbag 262 to deploy, in particular, to deploy vertically in front of the occupant to provide cushioning protection.

[0039] The device 200 for protecting vehicle occupants also includes a control unit 282 and a sensor 284. The control unit 282 communicates with the sensor 284 to detect whether an event requiring inflation of the airbag 262 has occurred (e.g., a vehicle collision). When the sensor 284 senses an event requiring inflation of the airbag 262, the control unit 282 (wired or wireless) sends a signal to the gas generator 266, thereby activating the gas generator 266 to inflate the airbag 262. The inflated airbag 262 exerts force on the cladding 268, allowing the cladding 268 to release the airbag 262 by rupturing or breaking, thus providing occupant protection (see [link]). Figure 1 and Figure 2 ).

[0040] However, the inventors of this utility model have discovered some problems with the existing technical solutions. For example, sewing the airbag to the seat belt webbing with multiple longitudinal stitches can deform the seat belt webbing, harden it and affect its feel, and also take a long time to process.

[0041] Therefore, this utility model proposes an improved airbag module for installation on a seat belt. Figure 5 The diagram shows a schematic perspective view of an embodiment of an airbag module according to the present invention, together with seatbelt webbing 110, wherein the airbag 150 is in a stored state. Figure 6 It shows Figure 5 A schematic perspective view of the airbag module along with the seatbelt webbing 110, viewed from an oblique angle. Figure 7 It shows Figure 5 A schematic perspective view of the airbag module together with the seat belt webbing 110 from a slightly downward angle.

[0042] As shown in the figure, the airbag module includes an airbag 150 for helping to protect vehicle occupants. The airbag has a storage state in which it is rolled up and / or folded. In this document, references to "packaged airbag," "airbag packaging," and / or similar terms mean an airbag held in its storage state. The airbag 150 can be constructed from any suitable material, such as nylon (e.g., woven nylon 6-6 yarn), and can be constructed in any suitable manner. For example, the airbag 150 can have a one-piece fabric (OPW) construction, in which the airbag is woven as a single piece of material. As another example, the airbag 150 may include more than one piece of material. If more than one piece of material is used, these material pieces can be interconnected by suitable means, such as sewing, ultrasonic welding, thermal bonding, or adhesives, to form the airbag 150. The airbag 150 may be uncoated, coated with a material such as impermeable polyurethane, or laminated with a material such as an impermeable membrane. Therefore, the airbag 150 can have an airtight or substantially airtight construction. Those skilled in the art will understand that alternative materials such as polyester yarn and alternative coatings such as silicone resin can also be used to construct the airbag 150.

[0043] The airbag module also includes a fabric air duct 140. For example... Figure 10 and Figure 11As shown, the fabric air duct 140 is fluidly connected to the airbag 150 in an airtight manner. This allows for advantageous inflation of the airbag 150 via the fabric air duct 140, for example, in the event of a vehicle collision. Specifically, the fabric air duct 140 is flexible, thereby facilitating assembly with the airbag 150 and providing an improved tactile feel upon contact with the occupant. Preferably, for targeted inflation of the airbag 150 when needed (e.g., in the event of a collision), the fabric air duct 140 extends at least sectionally into the interior of the airbag (see exemplary embodiment). Figure 11 Preferably, the end of the fabric air tube 140 is sewn inside the air bag 150 (not shown). Preferably, the fabric air tube 140 is introduced into the air bag 150 through a fabric air tube channel (not shown). This allows for reliable guidance and positioning of the fabric air tube 140 in a simple manner. The fabric air tube channel can have higher strength than the fabric air tube 140. This simplifies the assembly process and improves the stability and reliability of inflation.

[0044] The airbag module also includes a webbing channel (not shown) for the passage of the seatbelt webbing 110. The webbing channel is fixed to the airbag 150 such that, in the stored state of the airbag 150, the webbing channel is positioned on the outside of the airbag 150. Thus, after the airbag 150 is rolled up and / or folded, the webbing channel can be secured to the outside of the airbag 150. Preferably, the webbing channel is a tubular component made of a flexible material.

[0045] like Figure 5 As shown, the airbag module also includes a cover 160. The cover 160 is used to package the airbag 150 in a storage state when the airbag 150 is rolled up and / or folded. The cover 160 can be made of any suitable material. Advantageously, the cover 160 is made of the same material as the surface covering of the vehicle seat (e.g., leather). This achieves a visual effect consistent with the vehicle seat. Figure 5In the illustrated embodiment, the covering 160 is constructed as a sheet and includes a zipper 162. The covering 160 is formed into a cylindrical shape by means of the zipper to package and secure the airbag 150 in a storage state. In other words, the zipper 162 is positioned at both free ends of the sheet of the covering 160 along the longitudinal direction X of the airbag module (i.e., along the longitudinal length of the seatbelt webbing when mounted on seatbelt webbing). After the airbag 150 is rolled up and / or folded, the covering 160 completely surrounds the airbag 150, at least a portion of the fabric air duct 140 (along with optional fabric air duct channel elements), and the webbing channel elements in the circumferential direction, and then the zipper 162 is closed to package the airbag module. This allows for particularly simple and quick wrapping and packaging of the airbag 150. Preferably, the airbag module of this invention can be constructed as a pre-assembled accessory. Airbag manufacturers can already handle the storage (rolling up and / or folding) of airbags and the packaging of airbag modules, facilitating installation and transportation. These can be delivered directly to seatbelt manufacturers or vehicle OEMs as pre-installed components. This significantly reduces the time and labor costs associated with installing the airbag module onto vehicle seatbelts on assembly lines. Furthermore, different sizes of airbags can be combined to create various pre-installed components, easily adaptable to different application scenarios.

[0046] exist Figure 5 In the preferred embodiment shown, the cover 160 has a narrowing structure at both ends 160A along the longitudinal direction (preferably the size of which is adapted to the size of the seat belt webbing 110) and a widening dimension in the intermediate region 160B adapted to the shape of the airbag 150 in the storage state. Preferably, the cover 160 fits snugly against the airbag 150 in the storage state in the intermediate region. Thus, the cover 160 itself forms a pre-fixing structure between the cover 160 and the airbag 150 (without additional pre-fixing devices or measures), and ensures that the airbag packaging has a predetermined relative position to the cover during storage, transportation, and assembly. Figure 7 As shown in the preferred embodiment, the zipper 162 extends over the entire length of the cover 160 (along the longitudinal direction X of the airbag module).

[0047] Preferably, the covering 160 includes a weakened region (not shown) that, when the airbag 150 is inflated, the weakened region can break off and release the airbag 150 when the force on the covering 160 exceeds a first threshold. This allows the airbag 150 to be released and deployed reliably in the event of, for example, a vehicle collision, to protect the vehicle occupants.

[0048] exist Figure 8The diagram shows a schematic perspective view of another embodiment of the airbag module according to the present invention, together with the seatbelt webbing 110, wherein the airbag (not shown) is in a stored state. In this preferred embodiment, the cover 160 has a pattern structure 166 on its outer surface, the pattern structure being embroidery, embossing, printing, and / or laser engraving. Preferably, the pattern structure 166 may include: brand logo, brand slogan, product attribute information (configuration level, production information, etc.), decorative texture, safety tips, and / or user-specific information. Thus, an aesthetically pleasing appearance can be achieved in a simple manner, while providing the necessary information when necessary.

[0049] exist Figure 9 The diagram shows a schematic perspective view of one embodiment of the airbag module cover 160 according to the present invention. In this preferred embodiment, the cover 160 has at least a partially provided foam material layer 168 on its inner surface. This improves the comfort of the seatbelt with the airbag module installed. Those skilled in the art will readily understand that the foam material layer 168 has a very small thickness (exemplarily, and not limitingly, in the range of 1 mm to 3 mm) and low strength, and the presence of the foam material layer does not affect the function of the weakened area of ​​the cover 160 (i.e., it does not affect the reliable release and deployment of the airbag 150 in the event of a vehicle collision).

[0050] exist Figure 10 The diagram shows a schematic perspective view of an embodiment of an airbag module according to the present invention, wherein the airbag 150 is in a stored state. Figure 11 It shows Figure 10 A schematic perspective view of the air bag 150 together with the fabric air duct 140. In this preferred embodiment, the fabric air duct 140 is introduced into the air bag 150. Preferably, the end of the fabric air duct 140 is sewn inside the air bag 150. Figure 11 In the preferred embodiment, a flow deflector 152 is provided inside the airbag 150, and the output end of the fabric air duct 140 in the airbag 150 is guided toward the flow deflector 152. The flow deflector 152 is preferably constructed in a dock-like shape. This allows for proper guidance of the inflation airflow when the gas generator is triggered and the airbag 150 is inflated via the fabric air duct 140, enabling rapid and reliable airbag deployment to provide occupant protection. Preferably, the flow deflector 152 has a heat-insulating layer on its surface 156 facing the output end of the fabric air duct 140; preferably, the heat-insulating layer is a silicone layer. This prevents the heat from the inflation gas from damaging the flow deflector 152 or even the airbag 150, ensuring reliable operation of the airbag.

[0051] This utility model also proposes an airbag assembly for installation on a seat belt. For example... Figure 12 As shown, the airbag assembly includes: an airbag module according to the present invention; a gas generator 120 for providing inflation fluid; and a metal tube 130, one end of which is airtightly connected to the gas generator 120 and the other end of which is airtightly connected to a fabric air duct 140. With the solution of the present invention, the airbag assembly (including the airbag module, gas generator 120, and metal tube 130) can also be formed as a pre-assembled accessory. Pre-assembly and packaging of the airbag assembly can be completed at the airbag manufacturer, thereby facilitating installation and transportation, and allowing direct delivery to seatbelt manufacturers or vehicle OEMs as a pre-assembled accessory. This also significantly reduces the time and labor costs of installing the airbag assembly onto vehicle seats in the assembly line. The metal tube 130 can be airtightly connected to the gas generator 120 by any suitable means. Preferably, the metal tube 130 is airtightly connected to the gas generator 120 by a riveting structure. Thus, a reliable connection can be achieved with a simple structure. The metal tube 130 can be airtightly connected to the fabric air tube 140 by any suitable means. Preferably, the metal tube 130 is airtightly connected to the fabric air tube 140 by a locking clip. Thus, a reliable connection can be achieved with a simple structure.

[0052] This utility model also proposes a device 100 for protecting vehicle occupants. For example... Figure 12 As shown, the device 100 for protecting vehicle occupants includes: an airbag assembly according to the present invention; and a seat belt, wherein the airbag module of the airbag assembly is mounted on the webbing 110 of the lap belt portion of the seat belt. This allows for particularly simple and reliable installation of the airbag assembly onto the seat belt. Furthermore, since the airbag assembly of the present invention is constructed as a pre-assembled component, it can be easily, quickly, and accurately installed onto the vehicle seat using a robot on an automated production line. Preferably, a webbing transverse to the seat belt (see example) is used at each end of the airbag module. Figure 12 The schematic diagram (where X indicates the direction extending along the longitudinal length of the seatbelt webbing, and Y indicates the direction transverse to the longitudinal direction of the seatbelt webbing) shows the connecting line 190 (especially the stitching line) that secures the airbag module to the webbing 110. This allows for a particularly simple and quick, reliable fixation. Figure 12The connecting line 190 is only schematically shown. It is easily understood that the routing path of the connecting line 190 near the end of the fabric air duct 140 avoids the fabric air duct 140, so that the connection operation does not affect the inflation function of the fabric air duct 140. Preferably, the connecting line 190 securely connects the cover 160 and the webbing channel to the seatbelt webbing 110 without passing through the fabric air duct 140. Specifically, through the connecting line 190, the airbag module (including the airbag 150, the fabric air duct 140, and optional fabric air duct channel, cover 160, and webbing channel, these components together, directly or indirectly) is ultimately secured to the webbing 110. This allows for a particularly simple, reliable, and quick installation of the airbag module on the seatbelt webbing. Preferably, the length of the connecting line is equal to the width of the seatbelt webbing 110. This ensures a secure and reliable installation.

[0053] In summary, the airbag module, airbag assembly, or device 100 for protecting vehicle occupants according to this invention enables simple and cost-effective installation and fixation. In particular, the airbag module or airbag assembly of this invention can be pre-assembled, allowing for convenient assembly in an assembly line, thereby saving time, labor, and costs. Particularly advantageously, automated assembly can be easily achieved. Advantageously, this invention enables reliable release of the airbag 150 for occupant protection when inflated.

[0054] It should be understood that this utility model is not limited to the above description. This utility model can be modified and changed in various ways without departing from its spirit and scope.

Claims

1. An airbag module for mounting on a seat belt, characterized by, The airbag module includes: an airbag (150) having a storage state in which the airbag is rolled up and / or folded; a fabric air duct (140) that is fluidly connected to the airbag (150) in an airtight manner; a webbing channel member configured to be fixed to the airbag (150) to form a webbing channel through which the webbing (110) of a seat belt passes; and a cover (160) for packaging the airbag (150) in the storage state, the cover (160) being constructed as a sheet and having a zipper (162) that forms a cylindrical shape by means of the zipper to package and secure the airbag (150) in the storage state.

2. The airbag module according to claim 1, characterized in that The cover (160) has a narrowed structure at both ends along the longitudinal direction and an expanded dimension in the middle region that is adapted to the shape of the air bag (150) in the storage state.

3. The airbag module according to claim 1 or 2, characterized in that The zipper (162) extends over the entire length of the cover (160).

4. The airbag module according to claim 1 or 2, characterized in that The covering (160) has a pattern structure (166) on its outer surface, the pattern structure being an embroidery part, an embossing part, a printing part and / or a laser engraving part.

5. The airbag module according to claim 1 or 2, characterized in that, The covering (160) has at least a partial layer of foamed material on its inner surface.

6. The airbag module according to claim 1 or 2, characterized in that The fabric air duct (140) is introduced into the air bag (150).

7. The airbag module according to claim 6, characterized in that Inside the air bag (150) is a flow guide (152), and the output end of the fabric air guide tube (140) in the air bag (150) is guided toward the flow guide (152).

8. The airbag module according to claim 6, characterized in that In the storage state of the air bag (150), the covering (160) completely encloses the air bag (150) and at least partially encloses the fabric air duct (140), and / or The cover (160) includes a weakened region that, when the air bag (150) is inflated, can break off and release the air bag (150) when the force on the cover (160) is greater than a first threshold.

9. The airbag module according to claim 2, characterized in that The dimensions of the narrowing structure are adapted to the dimensions of the seat belt webbing (110).

10. The airbag module according to claim 2, characterized by The cover (160) fits tightly against the air bag (150) in the storage state in the intermediate region.

11. The airbag module according to claim 6, characterized in that The end of the fabric air duct (140) is sewn inside the air bag (150).

12. The airbag module according to claim 7, characterized in that The fairing (152) has a dock-like structure.

13. The airbag module according to claim 7, characterized by The air deflector (152) has a heat-insulating layer on the surface facing the output end of the fabric air duct (140).

14. The airbag module according to claim 13, characterized in that The heat-insulating layer is a silicone layer.

15. An airbag module for mounting on a seat belt, characterized by The airbag assembly includes: an airbag module according to any one of claims 1 to 14; a gas generator (120) for providing inflation fluid; and a metal tube (130) having one end airtightly connected to the gas generator (120) and the other end airtightly connected to a fabric air duct (140).

16. Apparatus for protecting an occupant of a vehicle, characterised in that The device (100) for protecting vehicle occupants includes: an airbag assembly according to claim 15; and a seat belt, wherein the airbag module of the airbag assembly is mounted on the webbing (110) of the lap belt portion of the seat belt.

17. The arrangement for protecting an occupant of a vehicle according to claim 16, characterized in that At each of the two ends of the airbag module, a connecting line (190) transverse to the seat belt webbing is used to fix the airbag module to the webbing (110).

18. The arrangement for protecting an occupant of a vehicle according to claim 17, characterized in that The connecting line (190) is a suture line.

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