A gas directing device

Abstract

The application discloses a gas guiding device, which comprises a main cloth piece, and the main cloth piece comprises a cloth piece body, a first intercepting part and a second intercepting part. The cloth piece body is provided with an air inlet. The first intercepting part cooperates with the cloth piece body in a direction perpendicular to a reference plane to form a first gas guiding cavity, and the first gas guiding cavity is communicated with the air inlet. The second intercepting part cooperates with the cloth piece body in a direction perpendicular to the reference plane to form a second gas guiding cavity, and the two ends of the second intercepting part in a first direction correspond to the two edges of the first intercepting part in the first direction. The inside of the second gas guiding cavity is communicated with the air outlet end of the first gas guiding cavity, and the second gas guiding cavity guides gas in at least one end in a second direction. The application realizes twice filtration of high-temperature residues through the first gas guiding cavity and the second gas guiding cavity, thereby realizing effective interception of the residues of a gas generator, and solving the problem that the residues generated by the gas generator are easy to enter and damage the safety air bag.

Description

Technical Field

[0001] This invention relates to the field of automotive airbag technology, and more specifically to an air delivery device. Background Technology

[0002] The air duct is a key component of an airbag, its function being to ensure the uniform and rapid filling of the entire airbag during deployment. During airbag deployment, the air duct receives the high-pressure gas released by the gas generator and then quickly and evenly distributes it within the airbag. Furthermore, the air duct also intercepts debris released by the gas generator, preventing damage or leakage to the airbag due to debris impact.

[0003] In existing technologies, air guide bags with multiple air vents are usually formed from a single layer of fabric. During use, the high-speed gas and high-speed residue generated by the gas generator will rapidly impact the single layer of fabric of the air guide bag. Since the residue generated by the gas generator is difficult to break through the air guide bag, the residue will flow into the airbag with the high-speed gas, thereby impacting the airbag. This will undoubtedly pose a safety hazard to the airbag.

[0004] Therefore, a new technological solution is needed. Summary of the Invention

[0005] In view of this, embodiments of the present invention provide a gas guiding device to at least solve the problem in the prior art that residue generated by the gas generator can easily enter and damage the airbag.

[0006] The embodiments of the present invention provide the following technical solutions:

[0007] This invention provides an air guiding device, including a main fabric sheet, the main fabric sheet comprising:

[0008] A fabric sheet body, wherein an air inlet is provided on the fabric sheet body;

[0009] The first interception part, in a direction perpendicular to the reference plane, cooperates with the fabric body to form a first air guide cavity, the first air guide cavity is connected to the air inlet, and the first air guide cavity has at least one end for air outlet in a first direction, wherein the reference plane is the plane where the fabric body is located, and the first direction is parallel to the reference plane;

[0010] The second interception part, in a direction perpendicular to the reference plane, cooperates with the fabric body to form a second air guide cavity, which is correspondingly arranged with the first interception part in a direction perpendicular to the reference plane, and the two ends of the second interception part in the first direction correspondingly extend beyond the two edges of the first interception part in the first direction.

[0011] The interior of the second air-guiding cavity is connected to the air outlet of the first air-guiding cavity. The second air-guiding cavity guides air at least at one end in a second direction. The second direction is parallel to the reference plane and has an angle with the first direction.

[0012] Furthermore, the first direction and the second direction are set perpendicular to each other.

[0013] Furthermore, the first intercepting part is disposed on one side of the fabric body in the second direction and is integrally connected to the fabric body;

[0014] The first intercepting part is folded over, and the side of the first intercepting part away from the main body of the fabric is sewn to the main body of the fabric to form the first air guiding cavity.

[0015] Furthermore, there are two first intercepting parts, which are respectively disposed on both sides of the main body of the fabric in the second direction, and are integrally connected to the main body of the fabric.

[0016] The first intercepting parts are folded over and the sides of the two first intercepting parts away from the main body of the fabric are sewn together to form the first air guiding cavity.

[0017] Furthermore, the first intercepting part is stacked on the main body of the fabric piece, and the two edges of the first intercepting part in the second direction are sewn together with the main body of the fabric piece to form a first air guide cavity that vents air in the first direction.

[0018] Furthermore, in the first direction, one edge of the first intercepting part is sewn to the main body of the fabric piece to facilitate the adjustment of the gas flow direction by the first air guiding cavity.

[0019] Furthermore, the second intercepting part is disposed on one side of the fabric body in the first direction and is integrally connected to the fabric body;

[0020] The second intercepting part is folded over so that the side of the second intercepting part away from the main body of the fabric passes over the first intercepting part, and then the side of the second intercepting part away from the main body of the fabric is sewn to the main body of the fabric to form the second air guiding cavity.

[0021] Furthermore, the second intercepting part is stacked on the main body of the fabric piece, and the two edges of the second intercepting part in the first direction are sewn together with the main body of the fabric piece to form the second air guiding cavity.

[0022] Furthermore, it also includes a reinforcing part, which is laid flat on the main body of the fabric piece, and its side is integrally connected to the side of the first intercepting part.

[0023] Furthermore, the expansion inner diameter of the air outlet of the first air guide cavity is smaller than the expansion inner diameter inside the first air guide cavity, so as to intercept the residue generated by the gas generator.

[0024] Furthermore, the expansion inner diameter of the outlet of the second air guide cavity is smaller than the expansion inner diameter inside the second air guide cavity, so as to further intercept the residue generated by the gas generator.

[0025] An air guiding device according to an embodiment of the present invention includes a main fabric sheet, the main fabric sheet comprising:

[0026] A fabric sheet body, wherein an air inlet is provided on the fabric sheet body;

[0027] The first interception part, in a direction perpendicular to the reference plane, cooperates with the fabric body to form a first air guide cavity, the first air guide cavity is connected to the air inlet, and air is discharged from one end of the first air guide cavity in a first direction, wherein the reference plane is the plane where the fabric body is located, and the first direction is parallel to the reference plane;

[0028] The second interception part is disposed corresponding to the first interception part in a direction perpendicular to the reference plane. One end of the second interception part is connected to the main body of the fabric piece, and the other end extends beyond the edge of the first interception part in the first direction and is connected to the first interception part to form a second air guide cavity.

[0029] The interior of the second air guide cavity is connected to the air outlet of the first air guide cavity, and the second air guide cavity has at least one end that outlets air in a second direction. The second direction is parallel to the reference plane and has an angle with the first direction.

[0030] Compared with the prior art, the beneficial effects that the at least one technical solution adopted in the embodiments of the present invention can achieve include at least:

[0031] The present invention discloses a gas guiding device in which a first gas guiding cavity is formed by a cloth body and a first intercepting part, which can discharge gas in a first direction, and a second gas guiding cavity is formed by a cloth body and a second intercepting part, which can discharge gas in a second direction. The gas outlet of the first gas guiding cavity is connected to the interior of the second gas guiding cavity. Thus, when a gas generator supplies gas to the gas guiding device, the residue of the gas generator can be filtered for the first time in the first gas guiding cavity by the first intercepting part, and then filtered for the second time by the second intercepting part. This effectively intercepts the residue of the gas generator and solves the problem in the prior art that the residue generated by the gas generator can easily enter and damage the airbag. Attached Figure Description

[0032] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of a gas guiding device installed inside an airbag according to an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of the structure of a gas guiding device during expansion according to an embodiment of the present invention;

[0035] Figure 3 This is a schematic flowchart of a first embodiment of an air guiding device according to an embodiment of the present invention;

[0036] Figure 4 This is a schematic flowchart of a second embodiment of an air guiding device according to an embodiment of the present invention;

[0037] Figure 5 This is a schematic flowchart of a third embodiment of an air guiding device according to an embodiment of the present invention.

[0038] The reference numerals in the drawings of this invention are as follows:

[0039] 10. Main fabric piece; 11. Fabric piece body; 111. Air inlet; 12. First interception section; 13. First air guide cavity; 14. Second interception section; 15. Second air guide cavity; 16. Reinforcing section; 20. Reference plane. Detailed Implementation

[0040] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0041] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0042] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0043] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0044] Additionally, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that practice can be carried out without these specific details.

[0045] In automotive airbags, the air deflector is used to guide the gas toward the airbag in a predetermined direction when the gas generator releases gas and high-temperature residue, and to intercept the high-temperature residue released with the gas, preventing the high-temperature residue from entering the airbag and damaging it.

[0046] Existing air deflectors are typically single-layered or multi-layered to prevent hot debris from rupturing the air deflector and entering the airbag. Regardless of whether they are single-layered or multi-layered, existing air deflectors have a relatively unidirectional airflow direction. Therefore, when the inner surface of the air deflector is smooth, hot debris trapped by the air deflector may be diverted by the airflow and enter the airbag, potentially damaging it.

[0047] Based on this, the embodiments of the present invention propose a processing solution: such as Figure 1 As shown, in an embodiment of the present invention, a gas guiding device is formed in which a first gas guiding cavity 13 is located inside a second gas guiding cavity 15, and the gas outlet directions of the first gas guiding cavity 13 and the second gas guiding cavity 15 are perpendicularly arranged. Thus, when the gas generator releases gas and high-temperature residue, the gas is guided by the first gas guiding cavity 13 into the second gas guiding cavity 15 and intercepts most of the high-temperature residue. The second gas guiding cavity 15 guides the gas to the airbag and intercepts the remaining high-temperature residue again, thereby improving the interception rate of high-temperature residue and solving the problem in the prior art where a single gas outlet leads to high-temperature residue easily entering and damaging the airbag.

[0048] The technical solutions provided by the various embodiments of this application are described below with reference to the accompanying drawings.

[0049] Example 1

[0050] like Figures 1-3 As shown, an embodiment of the present invention provides an air guiding device, characterized in that it includes a main fabric sheet 10, the main fabric sheet 10 including a fabric sheet body 11, a first intercepting part 12 and a second intercepting part 14. The fabric body 11 has an air inlet 111. A first intercepting part 12 forms a first air guiding cavity 13 with the fabric body 11 in a direction perpendicular to the reference plane 20. The first air guiding cavity 13 is connected to the air inlet 111, and at least one end of the first air guiding cavity 13 exits air in the first direction. The reference plane 20 is the plane where the fabric body 11 is located, and the first direction is parallel to the reference plane 20. A second intercepting part 14 forms a second air guiding cavity 15 with the fabric body 11 in a direction perpendicular to the reference plane 20. It is correspondingly arranged with the first intercepting part 12 in a direction perpendicular to the reference plane 20, and both ends of the second intercepting part 14 extend beyond the two edges of the first intercepting part 12 in the first direction. The interior of the second air guiding cavity 15 is connected to the air outlet of the first air guiding cavity 13. At least one end of the second air guiding cavity 15 guides air in the second direction, which is parallel to the reference plane 20 and has an angle with the first direction.

[0051] The main fabric piece 10 is used to form a folded air guiding device. The air inlet 111 of the air guiding device is used to connect with the air outlet of the gas generator. The air guiding device is used to guide the gas flow and intercept the high-temperature residue generated by the gas generator.

[0052] The main body 11 of the cloth is the main part of the air guiding device, and this part is used to surround the air outlet of the gas generator.

[0053] The first intercepting part 12, in a direction perpendicular to the reference plane 20, cooperates with the fabric body 11 to form the first air guiding cavity 13, which means that when the fabric body 11 is laid flat, the first intercepting part 12 cooperates with the fabric body 11 to form the first air guiding cavity 13 above or below the fabric body 11.

[0054] In the case where the main body of the fabric 11 is laid flat, the first intercepting part 12 can cooperate with the main body of the fabric 11 to form the first air guiding cavity 13 in the following ways: the first intercepting part 12 is directly sewn to the main body of the fabric 11 at both ends to form the first air guiding cavity 13 that vents air in the first direction, or one end of the first intercepting part 12 is integrally set with the main body of the fabric 11 and then folded to form the first air guiding cavity 13.

[0055] Since the air inlet 111 on the main body of the cloth 11 is connected to the interior of the first air guide cavity 13, after the gas and high-temperature residue pass through the air inlet 111, they will directly enter the first air guide cavity 13, causing the first air guide cavity 13 to expand and bulge to form a cavity structure with air exiting at least one end.

[0056] The number of air outlets in the first air guide cavity 13 in the first direction can be flexibly set according to the actual air guiding requirements. The first air guide cavity 13 can be set to one air outlet or two air outlets.

[0057] The second intercepting part 14, in a direction perpendicular to the reference plane 20, cooperates with the fabric body 11 to form a second air guiding cavity 15, which means that when the fabric body 11 is laid flat, the second intercepting part 14 cooperates with the fabric body 11 to form a second air guiding cavity 15 above or below the fabric body 11.

[0058] In the case where the main body of the fabric 11 is laid flat, the first intercepting part 12 can cooperate with the main body of the fabric 11 to form the first air guiding cavity 13 in the following ways: the second intercepting part 14 is directly sewn to the main body of the fabric 11 at both ends to form the second air guiding cavity 15 that vents air in the second direction, or one end of the second intercepting part 14 is integrally set with the main body of the fabric 11 and then folded to form the second air guiding cavity 15.

[0059] Specifically, the first intercepting part 12 is not connected to the cloth body 11 on both sides in the first direction to form an air outlet, and is connected to the cloth body 11 on both sides in the second direction.

[0060] The second intercepting part 14 being arranged in a direction perpendicular to the reference plane 20 and corresponding to the first intercepting part 12 means that when the main body of the fabric 11, the first intercepting part 12 and the second intercepting part 14 are all laid flat, the first intercepting part 12 and the second intercepting part 14 are arranged vertically correspondingly, and the first intercepting part 12 is located below the second intercepting part 14.

[0061] The second intercepting part 14 is located on the outer sides of the first intercepting part 12 on both sides of the first intercepting part 12 in the first direction, so that the air outlet end of the first air guiding cavity 13 and the non-air outlet end of the second air guiding cavity 15 can be correspondingly set, so that when the first air guiding cavity 13 and the second air guiding cavity 15 are inflated, the first air guiding cavity 13 is located inside the second air guiding cavity 15.

[0062] Preferably, when the first air guide cavity 13 and the second air guide cavity 15 expand, the distance between the first intercepting part 12 and the air inlet 111 is less than the distance between the second intercepting part 14 and the air inlet 111.

[0063] Specifically, the second intercepting part 14 is connected to the cloth body 11 on both sides in the first direction, and not connected to the cloth body 11 on both sides in the second direction to form an air outlet.

[0064] When the gas in the first gas guide cavity 13 flows into the second gas guide cavity 15, the second gas guide cavity 15 expands and forms a cavity structure.

[0065] The angle between the first direction and the second direction is set to 0 to 180°.

[0066] Preferably, the included angle between the first direction and the second direction is set to 30 to 150°.

[0067] More preferably, the included angle between the first direction and the second direction is set to 60–120°.

[0068] Most preferably, the angle between the first direction and the second direction is set to 90°, that is, the first direction and the second direction are set perpendicular to each other.

[0069] For example, when the main body of the fabric 11 is laid flat, the first direction can be understood as the longitudinal direction of the plane where the main body of the fabric 11 is located, and the second direction can be understood as the transverse direction of the plane where the main body of the fabric 11 is located.

[0070] Specifically, when the gas guiding device is connected to the gas generator, the gas generator delivers gas and high-temperature residue into the first gas guiding cavity 13 through the air inlet 111. The first interception part 12 of the first gas guiding cavity 13 guides the gas to flow into the second gas guiding cavity 15 and intercepts the high-temperature residue for the first time, so that most of the high-temperature residue is blocked by the first interception part 12. After the gas and the remaining high-temperature residue are guided into the second gas guiding cavity 15, the second gas guiding cavity 15 guides the gas again and intercepts the high-temperature residue, so that the high-temperature residue remains in the second gas guiding cavity 15. Thus, the gas guiding device of the present invention can intercept high-temperature residue while guiding the gas.

[0071] In some of these embodiments, such as Figure 3 As shown, the first interception part 12 can be integrally connected with the main body of the cloth sheet 11 to reduce the process flow and facilitate the processing to form an air guiding device.

[0072] Specifically, the first intercepting part 12 is disposed on one side of the fabric body 11 in the second direction and is integrally connected to the fabric body 11.

[0073] The method for forming the first air guide cavity 13 after the first intercepting part 12 is integrally set with the main body of the fabric piece 11 is as follows: the first intercepting part 12 is folded in the direction of the main body of the fabric piece 11, and then the side of the first intercepting part 12 away from the main body of the fabric piece 11 is sewn to the main body of the fabric piece 11, thereby forming the first air guide cavity 13 that exits in the first direction.

[0074] In some of these embodiments, such as Figure 4 As shown, there are two first interception parts 12, which are respectively disposed on both sides of the main body of the cloth sheet 11 in the second direction and are integrally connected to the main body of the cloth sheet 11 to adjust the shape of the first air guide cavity 13 when it expands.

[0075] The first air guide cavity 13 is formed by folding the two first intercepting parts 12 toward the direction of the main body of the fabric 11 and sewing the two first intercepting parts 12 together on the side away from the main body of the fabric 11 to form the first air guide cavity 13 that vents air in the first direction.

[0076] In some embodiments, the first intercepting part 12 is stacked on the fabric body 11, and the two edges of the first intercepting part 12 in the second direction are sewn together with the fabric body 11 to form a first air guide cavity 13 for air outlet in the first direction, thereby reducing manual operation steps.

[0077] In some of these embodiments, in the first direction, one edge of the first intercepting part 12 is sewn to the main body of the fabric piece 11 so that the first air guiding cavity 13 can adjust the gas flow direction so that the air guiding device can adapt to airbags with different air output requirements.

[0078] In some embodiments, the second intercepting part 14 is disposed on one side of the fabric body 11 in the first direction and is integrally connected to the fabric body 11 to reduce the number of manufacturing steps.

[0079] The second air guide cavity 15 is formed by folding the second intercepting part 14 toward the direction of the main body of the fabric piece 11, and after the side of the second intercepting part 14 away from the main body of the fabric piece 11 passes over the first intercepting part 12, sewing the side of the second intercepting part 14 away from the main body of the fabric piece 11 and the main body of the fabric piece 11 together to form the second air guide cavity 15.

[0080] By making the second interception part 14 and the main body of the fabric piece 11 an integral connection, the number of manufacturing steps can be reduced and the fabric can be saved.

[0081] In some embodiments, the second intercepting part 14 is stacked on the fabric body 11, and the two edges of the second intercepting part 14 in the first direction are sewn together with the fabric body 11 to form the second air guiding cavity 15.

[0082] In some of these embodiments, such as Figure 5 As shown, the air guiding device also includes a reinforcing part 16, which is laid flat on the main body of the cloth sheet 11, and its side is integrally connected to the side of the first intercepting part 12.

[0083] The reinforcing part 16 is used to strengthen the fabric body 11 and prevent the fabric body 11 from being torn.

[0084] Preferably, the reinforcing part 16 is integrally formed with the first intercepting part 12, thereby reducing the number of process steps.

[0085] For example, when the reinforcing part 16 and the first intercepting part 12 are integrally formed, if the reinforcing part 16 is laid flat on the main body of the fabric piece 11, the reinforcing part 16 is folded over so that the first intercepting part 12 is folded over the reinforcing part 16, and the side of the first intercepting part 12 in the second direction is sewn together with the main body of the fabric piece 11 or the reinforcing part 16 to form the first air guiding cavity 13.

[0086] In some embodiments, the expansion inner diameter of the outlet of the first gas guide cavity 13 is smaller than the expansion inner diameter inside the first gas guide cavity 13, so as to intercept the residue generated by the gas generator and improve the interception rate of high temperature residue.

[0087] In some embodiments, the expansion inner diameter of the outlet of the second air guide cavity 15 is smaller than the expansion inner diameter inside the second air guide cavity 15, so as to further intercept the residue generated by the gas generator.

[0088] Wherein, after the high-temperature residue enters the first gas guide cavity 13 or the second gas guide cavity 15, if the high-temperature residue moves with the gas direction, at this time, since the expansion inner diameter of the gas outlet of the first gas guide cavity 13 is smaller than the expansion inner diameter inside the first gas guide cavity 13 or the expansion inner diameter of the gas outlet of the second gas guide cavity 15 is smaller than the expansion inner diameter inside the second gas guide cavity 15, the edge of the gas outlet of the first gas guide cavity 13 and the edge of the gas outlet of the second gas guide cavity 15 can intercept the high-temperature residue, preventing the high-temperature residue from rushing out of the first gas guide cavity 13 and the second gas guide cavity 15.

[0089] The working principle of this invention is as follows:

[0090] After the gas enters the first air guide cavity 13 through the air inlet 111, it will be diverted into the second air guide cavity 15 under the action of the first interception part 12, so that the second air guide cavity 15 expands.

[0091] After the high-temperature residue enters the first air guide cavity 13, most of the high-temperature residue is intercepted by the first interception part 12, and a small part of the high-temperature residue is carried into the second air guide cavity 15. Since the air outlet end of the first air guide cavity 13 is set to correspond to the non-air outlet end of the second air guide cavity 15, the non-air outlet end of the second air guide cavity 15 performs secondary interception on the small part of the high-temperature residue, thereby preventing the high-temperature residue from entering the airbag.

[0092] Example 2

[0093] This embodiment is a modified embodiment of embodiment 1. The only difference between this embodiment and embodiment 1 is that the number of air outlets of the first air guide cavity 13 and the connection objects of the edge of the second interception part 14 are different.

[0094] An embodiment of the present invention provides an air guiding device, including a main fabric sheet 10, which includes a fabric sheet body 11, a first intercepting part 12, and a second intercepting part 14. The fabric sheet body 11 has an air inlet 111. The first intercepting part 12, in a direction perpendicular to a reference plane 20, cooperates with the fabric sheet body 11 to form a first air guiding cavity 13, which is connected to the air inlet 111 and has an outlet at one end in a first direction. The reference plane 20 is the plane where the fabric sheet body 11 is located, and the first direction is parallel to the reference plane 20. The second intercepting part 14 is correspondingly arranged with the first intercepting part 12 in a direction perpendicular to the reference plane 20. One end of the second intercepting part 14 is connected to the fabric sheet body 11, and the other end extends beyond the edge of the first intercepting part 12 in the first direction and connects to the first intercepting part 12 to form a second air guiding cavity 15.

[0095] The interior of the second air guide cavity 15 is connected to the air outlet of the first air guide cavity 13, and the second air guide cavity 15 has at least one end that outlets air in the second direction. The second direction is parallel to the reference plane 20 and has an angle with the first direction.

[0096] One end of the second intercepting part 14 is connected to the main body of the cloth piece 11, and the other end is connected to the first intercepting part 12, thereby forming a second air guiding cavity 15, and the second air guiding cavity 15 is connected to the air outlet end of the first air guiding cavity 13.

[0097] The angle between the first direction and the second direction is set to 0 to 180°.

[0098] Preferably, the included angle between the first direction and the second direction is set to 30 to 150°.

[0099] More preferably, the included angle between the first direction and the second direction is set to 60–120°.

[0100] Most preferably, the angle between the first direction and the second direction is set to 90°, that is, the first direction and the second direction are set perpendicular to each other.

[0101] Compared with existing single-layer airbags, this invention can efficiently filter generator residues and change the direction and speed of high-temperature airflow. It can be used inside airbags with different modules and different base fabrics to better meet increasingly stringent regulations and customer needs.

[0102] In this specification, the same or similar parts between the various embodiments can be referred to interchangeably. Each embodiment focuses on describing the differences from other embodiments. In particular, the product embodiments described later are relatively simple in description since they correspond to the methods, and relevant parts can be referred to the descriptions in the system embodiments.

[0103] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A gas guiding device, characterized in that, Includes a main fabric piece, said main fabric piece comprising: A fabric sheet body, wherein an air inlet is provided on the fabric sheet body; A first interception section, which forms a first air-guiding cavity with the fabric body in a direction perpendicular to the reference plane. The first air-guiding cavity is connected to the air inlet, and only one end of the first air-guiding cavity exits air in the first direction, with the air outlet facing the unfolding direction of the airbag. The reference plane is the plane where the fabric body is located, which includes the plane where the fabric body is laid flat and the plane where it is folded and laid flat. The first direction is parallel to the reference plane. The expansion inner diameter of the air outlet of the first air-guiding cavity is smaller than the expansion inner diameter inside the first air-guiding cavity to facilitate the interception of residues generated by the gas generator. The second interception part, in a direction perpendicular to the reference plane, cooperates with the main body of the cloth to form a second air guiding cavity. It is correspondingly arranged with the first interception part in a direction perpendicular to the reference plane, and the two ends of the second interception part in the first direction correspondingly extend beyond the two edges of the first interception part in the first direction. The expansion inner diameter of the air outlet of the second air guiding cavity is smaller than the expansion inner diameter inside the second air guiding cavity, so as to further intercept the residue generated by the gas generator. The interior of the second air-guiding cavity is connected to the air outlet of the first air-guiding cavity. The second air-guiding cavity guides air at least at one end in a second direction. The second direction is parallel to the reference plane and has an angle with the first direction.

2. The air guiding device according to claim 1, characterized in that, The first direction and the second direction are set perpendicularly.

3. The air guiding device according to claim 1, characterized in that, The second intercepting part is disposed on one side of the main body of the fabric in the first direction and is integrally connected to the main body of the fabric; The second intercepting part is folded over so that the side of the second intercepting part away from the main body of the fabric passes over the first intercepting part, and then the side of the second intercepting part away from the main body of the fabric is sewn to the main body of the fabric to form the second air guiding cavity.

4. The air guiding device according to claim 1, characterized in that, The second intercepting part is stacked on the main body of the fabric piece, and the two edges of the second intercepting part in the first direction are sewn together with the main body of the fabric piece to form the second air guiding cavity.

5. The air guiding device according to claim 1, characterized in that, It also includes a reinforcing part, which is laid flat on the main body of the fabric piece, and its side is integrally connected to the side of the first intercepting part.

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