Air duct bag and its manufacturing method and vehicle safety device

Abstract

This disclosure provides an air duct, a method for manufacturing the same, and a vehicle safety device. The air duct is adapted to be inserted into an airbag and includes: a main body having an air inlet and a first air outlet, the air inlet being adapted to communicate with a gas generator; an extension attached to the main body and integrally formed by folding and sewing the edges along the fold line of the main body; wherein the extension has a second air outlet, and after folding and moving at an angle relative to the main body, the second air outlet is arranged opposite to the first air outlet in a generally horizontal direction. The air duct of this disclosure, by providing an extension and changing the angle of the extension so that the second air outlet of the extension is approximately horizontal with the first air outlet of the main body, achieves the function of helping to quickly deliver gas to the tail end of the airbag, ensuring the consistency of gas delivery to the front and rear cavities of the airbag.

Description

Technical Field

[0001] This disclosure relates to the field of automotive passive safety technology, specifically to an air guide bag for a side airbag and a method for manufacturing the same, as well as a vehicle safety device having the air guide bag. Background Technology

[0002] Side airbags are a type of passive safety device in automobiles. Figure 1 and Figure 2 As shown, the airbag 10 is located at the upper part of the vehicle window, specifically distributed from the A-pillar to the C-pillar. The gas generator (not shown) is usually located directly above or near the B-pillar on the side of the roof, requiring a certain amount of space in length, width, and height. The air guide bag 20 is tightly fitted to the outlet of the gas generator or the inlet 11 of the airbag 10. The entire airbag module requires a relatively large space. Compared with the horizontally inserted gas generator, the obliquely inserted gas generator is smaller in size in the vertical direction (Z direction) of the vehicle body, saving more space, and is therefore more widely used. Accordingly, the oblique air guide bag shown in the figure was developed. During a side collision, when the ignition current signal is received, the gas generator quickly releases gas, which inflates the airbag 10 through the air inlet 21 of the air guide bag 20. The airbag can quickly deploy in a short time (20-30 seconds), forming a barrier between the vehicle window and interior parts and the human body, absorbing and weakening the energy, and preventing injury to the head.

[0003] During a collision, the air duct not only effectively prevents the temperature rise caused by the gas generator from damaging the main airbag fabric, but also disperses the gas into the front and rear cavities of the airbag through the air outlets 22 and 23 in the front and rear directions. Simultaneously, due to the enormous impact generated when the gas generator detonates, significant local stress concentration occurs. The air duct, with its strength, can share some of this stress, maintaining the integrity of the main airbag.

[0004] Currently, the design of reading lights, water pipes, and grab handles, while facilitating passenger convenience, significantly reduces the space available for airbag placement. For airbags requiring protection for all three rows of occupants, space constraints necessitate placing the gas generators towards the front of the vehicle. This results in slow deployment at the rear of the airbag, with the rear airbag still inflating while the front airbags are already fully inflated. Furthermore, in interior trim subsystem tests, the rear airbags can easily become stuck within the trim and fail to deploy. The same issue arises when the gas generators are positioned towards the rear of the vehicle. While some solutions address these problems by increasing the number of gas generators, this also presents space constraints and increases costs. Summary of the Invention

[0005] The purpose of this disclosure is to propose an air guide bag to solve the problems in the prior art. By using an extended air guide bag, the possibility of gas diversion is increased, and the tail end is inflated to the required position, thereby solving the problem that the tail end of a conventional air guide bag unfolds too slowly.

[0006] Therefore, according to one aspect of this disclosure, an air duct is provided, the air duct being adapted to be inserted into an airbag and comprising: a main body having an air inlet and a first air outlet, the air inlet being adapted to communicate with a gas generator; an extension attached to the main body and integrally formed together with the main body by folding along the fold line of the main body and sewing the edges; wherein the extension has a second air outlet, and after the extension is folded and moved at an angle relative to the main body, the second air outlet is arranged opposite to the first air outlet in a generally horizontal direction.

[0007] Based on the above-described technical concept, this disclosure may further include any one or more of the following alternative forms.

[0008] In some alternative forms, the extension and the main body are a single piece, and a slit extending along the fold line is provided near the junction of the extension and the main body. After folding, the extension is rotated at an angle relative to the main body to approximately horizontal through the slit.

[0009] In some alternative forms, the extension rotates relative to the main body while moving along the cut and forming an outwardly folded portion, the edge of which is sewn integrally with the extension and the main body.

[0010] In some alternative forms, the main body is a first piece, and the air duct further includes a second piece and a third piece, which are respectively sewn at an angle to the first piece. The second piece and the third piece form the extension and, together with the main body, are folded along the fold line of the main body. The second air outlet is arranged in a generally horizontal direction opposite to the first air outlet.

[0011] In some alternative forms, the second and third cut pieces each include an overlapping portion that overlaps with the first cut piece, the overlapping portion being located on the outer surface of the main body.

[0012] In some alternative forms, the extension is provided with an opening that is offset from the second air outlet.

[0013] In some alternative forms, the air guide bag further includes a heat insulation sheet sewn onto the inner surface of the main body adjacent to the air inlet.

[0014] According to another aspect of this disclosure, a method for manufacturing the above-mentioned air duct is provided, the method comprising: S1: providing a cut piece forming a main body portion and an extension portion; S2: folding the cut piece along a fold line; S3: moving the extension portion at an angle relative to the main body portion to approximately horizontal; S4: sewing the edges of the main body portion and the extension portion together.

[0015] In some alternative forms, the extension and the main body are a single piece, and before or after S2, S21 is also included: a cut extending along the fold line is made near the junction of the extension and the main body.

[0016] In some alternative forms, in S3, the extension is rotated at an angle relative to the main body while moving along the cut and forming an outwardly folded portion.

[0017] In some alternative forms, in S1, a first piece forming the main body portion and a second and third piece forming the extension portion are provided; before S2, S22 is also included: the second piece and the third piece are respectively sewed at an angle to the first piece.

[0018] In some alternative forms, S1 further includes S11: forming an opening on the extension, the opening being offset from the second air outlet; and in S4, the sewing does not close the opening.

[0019] In some alternative forms, before S2, S23 is also included: providing a heat insulation sheet and sewing the heat insulation sheet to the inner surface of the main body.

[0020] According to another aspect of this disclosure, a vehicle safety device is also provided, the vehicle safety device including an airbag, a gas generator and the aforementioned air guide bag, the airbag including an airbag cavity, the air guide bag being disposed within the airbag cavity and communicating with the air outlet of the gas generator.

[0021] The disclosed air guide bag, by providing an extension and changing the angle of the extension so that the second air outlet of the extension is approximately horizontal with the first air outlet of the main body, achieves the function of helping to quickly deliver gas to the tail end of the airbag, ensuring the consistency of gas delivery to the front and rear chambers of the airbag. The air guide bag has a compact overall structure, is simple to manufacture, and has low cost, making it applicable to various occasions and meeting the diverse needs of users. Attached Figure Description

[0022] Other features and advantages of this disclosure will be better understood through the following detailed description of alternative embodiments in conjunction with the accompanying drawings, in which the same reference numerals identify the same or similar parts, wherein:

[0023] Figure 1This is a schematic diagram of a vehicle side airbag, where the gas generator is not shown.

[0024] Figure 2 yes Figure 1 An enlarged schematic diagram of part A in the middle;

[0025] Figure 3 and Figure 1 Similarly, a schematic diagram of a vehicle safety device according to one embodiment of the present disclosure is shown, wherein a gas generator is not shown;

[0026] Figure 4 This is a schematic diagram of the unfolded air guide bag according to one embodiment of the present disclosure;

[0027] Figure 5 yes Figure 4 A schematic diagram of the air guide bag after it has been folded along the fold line, in which the extension is in a state of not rotating relative to the main body;

[0028] Figure 6 This is a schematic diagram showing the extension section rotated relative to the main body through the cut.

[0029] Figures 7A to 7C The diagrams show the changes at the cut as the extension rotates relative to the main body through the cut.

[0030] Figure 8 and Figure 6 Similarly, an opening in one embodiment of the extension is shown;

[0031] Figure 9 and Figure 6 Similarly, an opening in another embodiment of the extension is shown;

[0032] Figure 10 This is a schematic diagram of the deployment of an air-conducting bag according to another embodiment of the present disclosure;

[0033] Figure 11 yes Figure 10 A schematic diagram of the air vent bag after it has been folded along the fold line;

[0034] Figure 12 yes Figure 10 An exploded view of the air duct. Detailed Implementation

[0035] The implementation and use of the embodiments are discussed in detail below. However, it should be understood that the specific embodiments discussed are merely illustrative of particular ways of implementing and using this disclosure, and are not intended to limit the scope of this disclosure. The descriptions of the structural positions of various components, such as upper, lower, top, bottom, etc., are not absolute but relative. These directional descriptions are appropriate when the various components are arranged as shown in the figures, but they change accordingly when the positions of the various components in the figures change.

[0036] In this document, the expressions “comprising” or similar expressions such as “including,” “containing,” and “having” are open-ended and do not exclude additional unlisted elements, steps, or components.

[0037] In this document, terms such as “first” and “second” are not used to specify the order of events or the number of components, unless otherwise stated.

[0038] In this document, unless otherwise explicitly specified, terms such as "installation," "connection," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this document according to the specific circumstances.

[0039] It should be understood that the air duct of this disclosure is applicable to various suitable means of transportation. The term "means of transportation" includes, but is not limited to, vehicles, ships, and aircraft. "Vehicles" include fuel-powered vehicles, hybrid vehicles, electric vehicles, hydrogen-powered vehicles, etc., and can be of various vehicle types, such as cars, buses, and rail vehicles. In the following description, the application environment of the air duct is primarily based on vehicle safety devices for cars; however, this does not preclude the application of this disclosure to other types of means of transportation.

[0040] It is recognized that for side airbags covering a large area in multi-row seating designs, the rapid dispersion of gas into the front and rear chambers of the airbag is a key design factor. In this paper, "front and rear" refers to the aft-rear direction relative to the vehicle. For space and cost considerations, using an extended airbag is an economical and effective method. According to the concept of this disclosure, an airbag with an extension is provided that, without altering the gas generator and airbag, achieves rapid gas delivery with a simple structural design and economical cost-effectiveness, ensuring consistent deployment of the front and rear chambers of the airbag.

[0041] Combination Figures 3 to 6 The air duct 200 shown is an embodiment of an air duct bag 200, which includes a main body 211 and an extension 214 attached to the main body 211. In this embodiment, as... Figure 4As shown, the main body 211 is constructed to include a first portion 212 adapted to form an air inlet 261 and a second portion 213 forming a first air outlet 262. The extension 214 and the main body 211 are a single piece and are generally rectangular in shape. The main body 211 and the extension 214 are symmetrical along the fold line C1, thus forming a... Figure 5 The structure shown includes an air inlet 261, a first air outlet 262, and a second air outlet 263. The air inlet 261 is adapted to connect to a gas generator, the first air outlet 262 faces the front cavity of the airbag, and the second air outlet 263 is formed from the free end of the extension 214 and faces the rear cavity of the airbag. It should be understood that the shapes of the main body and the extension are not limited to those shown. For the fabric material, heat-insulating material or multi-layered adhesive material can be selected, and no limitation is made here. Furthermore, this text describes the extension extending towards the rear cavity of the airbag; depending on different design, the extension may also extend towards the front cavity of the airbag, and correspondingly, the first air outlet of the main body may face towards the rear cavity of the airbag.

[0042] exist Figure 5 In the illustrated state, the second air outlet 263 of the extension 214 points downwards and to the left, meaning that the second air outlet 263 has an inclined angle relative to the first air outlet 262 of the main body 211 or the horizontal direction. Advantageously, it is desirable that the second air outlet 263 be arranged opposite to the first air outlet 262 in a substantially horizontal direction, or in other words, that the second air outlet 263 can be adjusted to a substantially horizontal direction, thereby facilitating the rapid guidance of gas to the area associated with the second air outlet. Here, "substantially horizontal" means horizontal or approximately horizontal. Depending on the internal pattern design of the airbag, the final angle at which the second air outlet 263 is adjusted can have a certain range of deviation, such as a deviation of 5 degrees or 10 degrees. For simplicity, it will be described as horizontal in the following text.

[0043] One way to adjust the angle of the second air outlet or extension is to... Figure 5 The folded extension 214 shown is moved at an angle relative to the main body 211 to the horizontal direction, which can be achieved by providing a slit in the cut piece. (Refer to...) Figure 4 As shown, a cutout 250 extending along the fold line C1 is provided at the junction of the extension 214 and the main body 211. The cutout 250 provides a movement space for the extension 214 to rotate towards the main body 211 and overlap with it, or an intrusion space between the two. Figure 5 and Figure 6 The angle between the extension 214 and the imaginary horizontal line is set as α, which is the rotation angle of the extension. When the extension rotates to the horizontal by the rotation angle α, as... Figure 6As shown, the extension 214 and the main body 211 have portions that intersect each other. Therefore, the size of the cut 250 should be related to the amount of intrusion P2 of the extension 214 or the amount of intrusion P1 of the main body 211.

[0044] Specifically, the size of the cut 250 is related to the rotation angle α of the extension and the width W of the second air outlet 263 of the extension. From Figure 6 It can be seen that the theoretical cut length (length of P1 or P2) = W × tan(α / 2). For ease of production, the actual cut length L can be the product of the theoretical cut length and the adjustment coefficient. Depending on actual needs, this adjustment coefficient can be, for example, 1.5-2. The value of the width W can also be reasonably designed according to actual needs. If the size of W is too large, it will increase the overall volume of the gas guide bag and affect the gas delivery speed. If it is too small, it will affect the integrity of the gas guide bag and may rupture due to excessive local pressure when the gas generator detonates. As an example, the width W of the second gas outlet 263 can be selected as 80-120mm, for example, 100mm.

[0045] In fact, the rotation angle α is also related to the tilt angle of the main body 211. The tilt angle of the main body of a conventional inclined air guide bag to the horizontal direction is usually 25°-35°. Accordingly, when the extension and the main body are formed from a single piece of fabric, the rotation angle α can be determined, for example, it can be 28°. In this way, the cut length L can also be determined.

[0046] In some embodiments, the extension rotates relative to the main body while moving along the slit and forming an outward fold. In actual production, it is advantageous to mark lines on both sides of the air guide bag to clearly define the fold line positions, facilitating operator quality control. Combined with... Figures 4 to 6 The starting point of the fold line B is the junction of the main body 211 and the extension 214 below the air duct. The folding angle θ is the sum of the angle β between the edge of the main body 211 and the vertical direction and the rotation angle α of the extension 214. As an example, the angle β is 60°, the rotation angle α is 28°, and the folding angle θ is 88°. It should be understood that the folding angle θ is determined based on the production process capability, taking into account that there will be a certain range of tolerances due to production fluctuations, such as 5 degrees or 10 degrees. After calculating the folding angle θ, two fold lines B can be drawn on each side of the air duct, one as the upper limit of the angle (e.g., folding angle θ plus 10 degrees) and the other as the lower limit of the angle (e.g., folding angle θ minus 10 degrees). If the intrusion amount P1 or P2 after the extension is folded is within the two limit values, the product is considered qualified.

[0047] Figures 7A to 7CThe diagram sequentially illustrates the changing state of the cut at the incision site as the extension rotates relative to the main body. As described above, the extension rotates relative to the main body while moving along the incision and forming an outward fold. Here, "outward" means that after the extension and the main body fold along the fold line, an outwardly expanding or opening space can be formed at the incision 250. Figure 7A As shown, when the extension 214 is rotated and folded, the operator can open the cut 250 outward to provide space for the extension 214 to rotate toward the main body 211 and overlap with the main body 211, or an intrusion space between the two. If the fold line B has been drawn, a roughly rhomboid shape can be formed as shown. Then, the extension 214 is rotated toward the main body 211 in the direction of the arrow and folded along the fold line B until… Figure 7B As shown, a first fold 271 and a second fold 272 are formed on both sides. At this point, the intrusion amount P1 of the main body 211 and the intrusion amount P2 of the extension 214 are clearly visible. Finally, the extension 214 is pushed into the main body 211 along the arrow direction until the first fold 271 and the second fold 272 are adhered to the outer surface of the extension 214, as shown. Figure 7C As shown. It should be understood that during the above exemplary transformation process, the first fold 271 and the second fold 272 are flipped and fitted towards the extension 214. However, depending on the operator, the first fold 271 and the second fold 272 may also be flipped and fitted towards the main body 211 during the folding process.

[0048] In this embodiment, by providing a cut 250 and rotating the extension 214 relative to the main body 211 to a horizontal state, the excess cut pieces of the main body 211 and the extension 214 intersect each other through the cut 250. After the extension 214 is rotated into position, the edges of the main body 211 and the extension 214 can be sewn together to form an integral air duct. Figure 8 and Figure 9 The sewing threads 243 and 244 for sewing the edges are shown, as well as the sewing thread 245 for sewing the cut 250 together with the fold 270 including the first fold 271 and the second fold 272.

[0049] In some embodiments, the air guide bag also includes a heat insulation sheet, which is sewn onto the inner surface of the main body 211 near the air inlet. The heat insulation sheet can buffer the gas ejected from the gas generator outlet and prevent the high-temperature gas from damaging the air guide bag. Figure 4 Two heat insulation sheets 220 and 230 and corresponding sewing threads 241 and 242 are shown as an example.

[0050] Advantageously, the sewing threads 243, 244, and 245 used for sewing the edges are stronger than the sewing threads 241 and 242 of the sewing insulation sheet, preventing the sewing threads at the edge of the air duct from being torn by impact, thereby ensuring the integrity of the air duct. Also advantageously, the sewing thread 242 of the sewing insulation sheet can be designed as a relatively lower strength sacrificial thread or tear thread, which can buffer the problem of excessive stress caused by the gas generator bursting through tearing.

[0051] In some embodiments, the extension may have an opening to increase the exhaust efficiency of the extension. For example... Figure 8 In one embodiment shown, the opening 281 is offset from the second air outlet 263. Figure 8 In the arrangement shown, opening 281 is not associated with sewing thread 244. Figure 9 In another embodiment shown, opening 282 is associated with sewing thread 244. It should be understood that "associated" here does not mean the sewing thread will close the opening, but rather that the sewing thread penetrates the opening area while still maintaining the air venting function of the opening. This facilitates the overall sewing of the air vent for ease of production. It should be understood that the number, size, shape, and location of the openings are related to the pattern design of the air vent and can be designed reasonably according to actual needs.

[0052] Figures 10 to 12 Another embodiment of the air duct 300 is shown, in which the main body and extension are designed as separate parts. Specifically, the main body 311 is made of a first piece of fabric, and the extension is made of a second piece of fabric 314 and a third piece of fabric 315 that are substantially the same in shape and size, for example, a roughly rectangular or parallelogram shape. Figure 4 The embodiment shown is similar, with the main body 311 constructed to include a first portion 312 adapted to form an air inlet 361 and a second portion 313 forming a first air outlet 362, and symmetrical along the fold line C2. Figure 10 In the unfolded state shown, the second piece 314 and the third piece 315 are sewn together at an angle to the first piece. This angle can be referenced to the angle β between the edge of the first piece and the vertical direction. This allows the main body 311 and the extension (the second piece 314 and the third piece 315) to be folded along the fold line C2, so that the second vent 363 formed at the free end of the extension is arranged approximately horizontally opposite to the first vent 362. Figure 11 As shown.

[0053] In this embodiment, the second piece 314 and the third piece 315 are sewn to the main body 311 with sewing thread 346 before folding, thereby forming a first overlapping portion 371 and a second overlapping portion 372 that overlap with the first piece. After folding, from Figure 11As can be seen, the overlapping portion 370, including the first overlapping portion 371 and the second overlapping portion 372, is advantageously located on the outer surface of the main body portion 311. This helps to avoid tearing at the seam caused by gas pressure impact when the overlapping portion 370, including the first overlapping portion 371 and the second overlapping portion 372, is arranged inside the air duct. Of course, if conditions permit, such as when the strength of the cut piece is sufficient, the overlapping portion can also be arranged inside the air duct.

[0054] After the main body 311 and the extension are folded into place, the edges of the main body 311 and the extension can be sewn together to form a complete air duct. In this embodiment, in addition to the sewing threads 343 and 344 for sewing the edges, such as Figure 11 As shown, it also includes a sewing thread 345 for sewing the upper edges of the second piece 314 and the third piece 315 together. Similarly, the air duct in this embodiment may also include heat insulation sheets 320 and 330 sewn onto the inner surface of the main body 311 adjacent to the air inlet, and corresponding sewing threads 341 and 342.

[0055] The air duct disclosed herein provides an extension and designs two ways to form the extension so that the second air outlet of the extension is arranged opposite to the first air outlet of the main body in a generally horizontal direction. This not only solves the spatial arrangement problem in the prior art, but also effectively realizes the function of quickly delivering the gas ejected by the gas generator to the front and rear cavities of the airbag when a collision occurs, ensuring the consistency of gas delivery in the front and rear cavities of the airbag, and effectively protecting the front and rear occupants.

[0056] Accordingly, this disclosure provides a method for manufacturing an air guide bag for different formation methods of the extension, the method comprising:

[0057] S1: Provide the cut pieces that form the main body and the extension;

[0058] S2: Fold the cut piece along the fold line;

[0059] S3: Move the extension portion at an angle relative to the main body portion to approximately horizontal;

[0060] S4: Sew the edges of the main body and the extension together as a whole.

[0061] against Figures 4 to 9 The air duct 200 shown is an integral piece, with the extension 214 and the main body 211 being a single piece. Before or after S2, it also includes S21: a slit 250 extending along the fold line C1 is made near the junction of the extension 214 and the main body 211. Then, in S3, the extension 214 rotates at an angle relative to the main body 211, while moving along the slit 250 to form an outwardly folded portion 270, and then the edges are sewn together in S4 to form the air duct 200.

[0062] against Figures 10 to 12 The illustrated split-type air duct 300, in step S1, provides a first piece forming the main body 311, and a second piece 314 and a third piece 315 forming the extension portion; before step S2, step S22 is included: the second piece 314 and the third piece 315 are respectively sewed at an angle to the first piece. Then, by folding in step S2, the extension portion is moved at an angle relative to the main body 311 to approximately horizontal position in step S3, and then the edges are sewn together in step S4 to form the air duct 300.

[0063] For embodiments with openings 281 or 282, advantageously, S1 further includes S11: forming openings 281 or 282 on the extension, the openings being offset from the second air outlet; and in S4, the sewing does not close the openings. This method is equally applicable to air ducts in both one-piece and two-piece forms.

[0064] For embodiments with heat insulation sheets, advantageously, before S2, S23 is included: providing the heat insulation sheet and sewing the heat insulation sheet to the inner surface of the main body. This method is also applicable to air ducts of both one-piece and two-piece forms.

[0065] As can be understood from the manufacturing method of the air duct described above, the one-piece air duct is easier to produce, reduces costs, and saves labor time, requiring the angle of the extension relative to the main body to be changed by rotation and folding; the split air duct requires the cut piece forming the extension to be sewn at an angle to the main body before folding, and then the angle of the extension relative to the main body can be changed by folding. Depending on different needs, this disclosure provides users with more layout options.

[0066] Furthermore, this disclosure also provides a vehicle safety device, including an airbag, a gas generator, and an air duct. The airbag includes an airbag cavity, and the air duct is disposed within the airbag cavity and communicates with the outlet of the gas generator. The air duct of this disclosure does not modify the airbag or the gas generator; therefore, the connection between the airbag, gas generator, and air duct can be achieved using conventional methods. For example, the air duct is fixed to the airbag by a strap clamp at a certain distance from the air duct port; the gas generator is fixed to the generator bracket by a strap clamp; the generator bracket is connected to the vehicle body sheet metal by pre-hooks and bolts; and the airbag is fixed to the vehicle body sheet metal by a buckle and a single-finger clip, thus forming a vehicle safety device.

[0067] It should be understood here that the embodiments shown in the figures only illustrate the optional architecture, shape, size and arrangement of various optional components of the air duct and vehicle safety device according to the present invention. However, they are only illustrative and not limiting. Other shapes, sizes and arrangements may be adopted without departing from the spirit and scope of the present invention.

[0068] It should be noted that the present invention (e.g., inventive concepts, etc.) has been described in the specification of this patent document and / or illustrated in the figures according to exemplary embodiments; embodiments of the present invention are presented by way of example only and are not intended to limit the scope of the invention. The structure and / or arrangement of the elements of the inventive concept embodied in the present invention as described in the specification and / or illustrated in the figures are merely illustrative. Although exemplary embodiments of the present invention have been described in detail in this patent document, it will be readily understood by those skilled in the art that equivalents, modifications, variations, etc., of the subject matter of the exemplary and alternative embodiments are possible and are considered to be within the scope of the present invention; all such subject matter (e.g., modifications, variations, embodiments, combinations, equivalents, etc.) are intended to be included within the scope of the present invention. It should also be noted that various / other modifications, variations, substitutions, equivalents, alterations, omissions, etc., may be made in the configuration and / or arrangement of the exemplary embodiments (e.g., in terms of concept, design, structure, apparatus, form, assembly, construction, means, function, system, process / method, steps, sequence of process / method steps, operation, operating conditions, performance, materials, composition, combination, etc.). All such subject matter (e.g., modifications, variations, embodiments, combinations, equivalents, etc.) is intended to be included within the scope of this invention without departing from its scope; all such subject matter (e.g., modifications, variations, embodiments, combinations, equivalents, etc.) is intended to be included within the scope of this invention. The scope of this invention is not intended to be limited to the subject matter (e.g., details, structures, functions, materials, behaviors, steps, sequences, systems, results, etc.) described in the specification and / or figures of this patent document. It should be understood that the claims of this patent document will be properly interpreted to cover the full scope of the subject matter of this invention (e.g., including any and all such modifications, variations, embodiments, combinations, equivalents, etc.); the terminology used in this patent document is intended to provide a description of the subject matter of exemplary embodiments and not to limit the scope of the invention.

[0069] It should also be noted that, according to exemplary embodiments, the present invention may include conventional techniques (e.g., techniques implemented and / or integrated in exemplary embodiments, modifications, variations, combinations, equivalents, etc.), or may include any other applicable techniques (now and / or in the future) with the ability to perform the functions and processes / operations described in the specification and / or illustrated in the figures. All such techniques (e.g., techniques implemented in the manner of embodiments, modifications, variations, combinations, equivalents, etc.) are considered to be within the scope of the present invention of this patent document.

Claims

1. A gas directing bag, characterized in that, The air guiding bag is adapted to be arranged in a safety air bag and comprises: a main body part provided with an air inlet and a first air outlet, the air inlet being adapted to communicate with a gas generator; an extension part attached to the main body part and formed integrally with the main body part along a folding line of the main body part and a sewn edge of the main body part; wherein the extension part is provided with a second air outlet, and the extension part is angularly moved relative to the main body part after being folded to arrange the second air outlet in a substantially horizontal direction opposite to the first air outlet.

2. The gas directing pocket of claim 1, wherein, The extension part and the main body part are a single piece, and a cut extending along the folding line is provided adjacent to a joint position of the extension part and the main body part, and the extension part is angularly rotated relative to the main body part to be substantially horizontal after being folded through the cut.

3. The gas directing pocket of claim 2, wherein, The extension part is rotated relative to the main body part while moving along the cut and forms a folded part folded outward, and an edge of the folded part is sewn integrally with the extension part and the main body part.

4. The gas directing pocket of any one of claims 1 to 3, wherein, The extension part is provided with an opening deviated from the second air outlet.

5. The gas directing pocket of any one of claims 1 to 3, wherein, The air guiding bag further comprises a heat insulation sheet sewn to an inner surface of the main body part adjacent to the air inlet.

6. A method for manufacturing a gas conducting bag according to any one of claims 1 to 5, characterized in that, The method comprises: S1: providing a piece forming a main body part and an extension part; S2: folding the piece along a folding line; S3: angularly moving the extension part relative to the main body part to be substantially horizontal after being folded; S4: sewing edges of the main body part and the extension part integrally.

7. The method of claim 6, wherein, The extension part and the main body part are a single piece, and before or after S2, S21 is further included: a cut extending along the folding line is provided adjacent to a joint position of the extension part and the main body part.

8. The method of claim 7, wherein, In S3, the extension part is angularly rotated relative to the main body part while moving along the cut and forming a folded part folded outward.

9. The method according to any one of claims 6 to 8, characterized in that, In S1, S11 is further included: an opening is formed on the extension part, and the opening is deviated from the second air outlet; and in S4, the sewing does not close the opening.

10. The method according to any one of claims 6 to 8, characterized in that, Before S2, S23 is further included: a heat insulation sheet is provided, and the heat insulation sheet is sewn to an inner surface of the main body part.

11. A vehicle safety device characterized by comprising: The vehicle safety device comprises a safety air bag, a gas generator and an air guiding bag according to any one of claims 1 to 5, the safety air bag comprises an air bag cavity, and the air guiding bag is arranged in the air bag cavity and communicates with an air outlet end of the gas generator.

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