Air guide bag and safety air bag

Abstract

The air guiding bag comprises a pre-folding structure, the pre-folding structure is folded and subjected to edge sewing to form the air guiding bag, the pre-folding structure comprises a first air guiding cloth piece and a second air guiding cloth piece which are arranged in an overlapped mode, the pre-folding structure further comprises a reinforcing cloth piece, and the reinforcing cloth piece is arranged on the first air guiding cloth piece and the second air guiding cloth piece. The reinforcing cloth piece is sewn on the side, facing the second air guide cloth piece, of the first air guide cloth piece and located between the first air guide cloth piece and the second air guide cloth piece. By adjusting the relative positions of the reinforcing cloth piece and the gas guide cloth piece, the problem that in the prior art, when a reinforcing piece is arranged on the inner side of a folding structure, plugging of a gas generator is affected is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive passive safety equipment, and particularly relates to an air guide bag and an airbag. Background Art

[0002] The air guide bag is used to be installed in the airbag, and is usually used to guide the gas released by the gas generator into the airbag and intercept the high-temperature residues generated by the gas generator. In order to cope with the high-temperature and high-explosion gas generator, a reinforcing sheet is usually sewn on the air guide cloth sheet, and the reinforcing sheet is fixed to the air guide cloth sheet through reinforcing stitches. Then, the air guide cloth sheet with the reinforcing sheet is folded in half to form a folding structure, and finally the edges of the folding structure are sewn to form an air guide bag with a reinforcing sheet.

[0003] In the prior art, after the air guide cloth sheet with the reinforcing sheet is folded in half, the reinforcing sheet is located inside the folding structure, that is, inside the air guide bag. Therefore, when the staff inserts the gas generator into the air guide bag, the stitch part formed by the reinforcing stitches will affect the installation of the gas generator. For example, when the reinforcing stitches are in a circular structure, the tubular edge of the gas generator will abut against the protrusion formed between the reinforcing cloth sheet and the reinforcing stitches, or when the reinforcing stitches are set in a U shape to form a "pocket" between the reinforcing cloth sheet and the air guide cloth sheet, the gas generator will be inserted into the "pocket", resulting in the staff being unable to install the gas generator in place at one time.

[0004] Based on this, a new technical solution is needed. Content of the Utility Model

[0005] In view of this, the embodiments of the present utility model provide an air guide bag and an airbag to at least solve the problem that the insertion of the gas generator is affected when the reinforcing sheet is arranged inside the folding structure in the prior art.

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

[0007] The embodiments of the present utility model provide an air guide bag, including a pre-folded structure, which is folded in half and sewn at the edges to form the air guide bag. The pre-folded structure includes an overlapping first air guide cloth sheet and a second air guide cloth sheet. The pre-folded structure further includes a reinforcing cloth sheet, and the reinforcing cloth sheet is sewn on the side of the first air guide cloth sheet facing the second air guide cloth sheet and is located between the first air guide cloth sheet and the second air guide cloth sheet.

[0008] Further, the pre-folded structure is folded in the direction of the first air guide cloth sheet.

[0009] Further, when the gas generator is installed at the insertion port of the air guide bag, at least part of the reinforcing cloth sheet wraps the air outlet of the gas generator.

[0010] Further, at least a part of the reinforcing cloth piece is located in the air outlet direction of the gas generator, and there is a preset distance between the end of the reinforcing cloth piece away from the gas generator and the air outlet of the gas generator.

[0011] Further, the reinforcing cloth piece is fixed to the first air guiding cloth piece through a sewing part.

[0012] Further, when the pre-folded structure is in an unfolded and flat state, the sewing part is arranged as a seamless line area towards the forming area of the insertion port of the air guiding bag.

[0013] Further, at least one end of the sewing part away from the forming area of the insertion port of the air guiding bag is provided with a transverse sewing line area.

[0014] Further, the sewing part is an arc structure or a broken line structure composed of multiple line segments as a whole.

[0015] Further, the sewing part is a U-shaped structure as a whole, and the opening part of the sewing part is the seamless line area.

[0016] The utility model further provides a safety airbag, including:

[0017] An airbag;

[0018] An air guiding bag as described in any one of the above, and the air guiding bag is installed in the airbag;

[0019] A gas generator, the gas generator is installed on the air guiding bag, and the air outlet of the gas generator is correspondingly arranged with the reinforcing cloth piece.

[0020] Compared with the prior art, the beneficial effects that can be achieved by at least one of the above technical solutions adopted in the embodiments of the utility model at least include:

[0021] In a kind of air guiding bag of the utility model, by sewing a reinforcing cloth piece between a first air guiding cloth piece and a second air guiding cloth piece, after the pre-folded structure is folded and the edges are sewn, the reinforcing cloth piece is still located between the first air guiding cloth piece and the second air guiding cloth piece, so that the interior of the formed air guiding bag is a flat structure as a whole, and thus the installation of the gas generator will not be affected by the shape of the reinforcing sewing line or the protrusion formed between the reinforcing cloth piece and the sewing line, solving the problem that the insertion of the gas generator is affected when the reinforcing piece is arranged inside the folding structure in the prior art. Description of the Drawings

[0022] To more clearly illustrate the technical solutions of the embodiments of the present application, the accompanying drawings required for the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0023] Figure 1 Schematic structural diagram of an air guiding bag according to an embodiment of the present utility model;

[0024] Figure 2 Partial sectional view of the air guiding bag according to an embodiment of the present utility model;

[0025] Figure 3 Assembly schematic diagram of a reinforcing fabric piece and a first air guiding fabric piece according to an embodiment of the present utility model;

[0026] Figure 4 Assembly schematic diagram of a reinforcing fabric piece, a first air guiding fabric piece and a second air guiding fabric piece according to an embodiment of the present utility model.

[0027] The reference numerals of the present utility model are as follows:

[0028] 1. Air guiding bag; 10. Pre-folded structure; 11. First air guiding fabric piece; 12. Second air guiding fabric piece; 13. Reinforcing fabric piece; 14. Sewing part; 141. Sewing-free area; 142. Transverse sewing area;

[0029] 2. Gas generator. Specific embodiments

[0030] The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0031] The following illustrates the embodiments of the present application through specific specific examples. Those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative efforts belong to the scope protected by the present application.

[0032] It should be noted that the following description relates to various aspects of embodiments within the scope of the appended claims. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is illustrative only. Based on this application, those skilled in the art should 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 a device and / or practice a method. Additionally, this device can be implemented and this method can be practiced using other structures and / or functionality in addition to one or more of the aspects set forth herein.

[0033] It should also be noted that the drawings provided in the following embodiments only schematically illustrate the basic concept of this application. The drawings only show the components related to this application and are not drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex.

[0034] In addition, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the examples can be practiced without these specific details.

[0035] In the prior art, after the folding structure is folded, the reinforcing piece can be located outside or inside the folding structure, that is, on the outer wall and / or the inner wall of the air guide bag.

[0036] When the reinforcing piece is located inside the air guide bag, if the reinforcing piece is sewn to the air guide cloth piece by a circular suture (such as a square suture), when the gas generator is inserted into the insertion port of the air guide bag, the tubular edge of the gas generator will turn down the edge of the reinforcing cloth piece and press against the space between the reinforcing cloth piece and the reinforcing suture (at this time, the edge of the reinforcing cloth piece forms a double-layer structure after being turned down and is fixed by the suture), resulting in the gas generator being stuck and unable to be successfully installed in place; and when the reinforcing piece is sewn to the air guide cloth piece by a U-shaped suture, a "pocket" structure will be formed between the reinforcing piece and the air guide cloth piece. Therefore, when the air outlet of the gas generator is inserted into this "pocket" structure, reinstallation is required. If not reinstalled, it will cause the gas generator to fail.

[0037] When the reinforcing piece is located outside the air guide bag, after the reinforcing piece is sewn to the air guide cloth piece by a suture, if the gas generator is detonated, the air guide bag will quickly expand. At this time, the suture of the reinforcing piece will rub against the external airbag during the rapid expansion of the air guide bag, or the edge of the reinforcing piece will turn up to form a protrusion and rub against the airbag, resulting in the rupture of the airbag.

[0038] Based on this, an embodiment of this specification proposes a processing solution: as Figures 1 to 4 shown, an air guiding bag 1 of the present utility model, by arranging a reinforcing cloth piece 13 between a first air guiding cloth piece 11 and a second air guiding cloth piece 12, after the pre-folded structure 10 is folded to form the air guiding bag 1, the reinforcing cloth piece 13 is located between the first air guiding cloth piece 11 and the second air guiding cloth piece 12 and does not directly contact the gas generator 2, thus solving the problem in the prior art that it is difficult for the gas generator 2 to be pre-installed in place at one time because the reinforcing cloth piece 13 is located inside the air guiding bag 1.

[0039] The following will describe the technical solutions provided by the embodiments of this application with reference to the accompanying drawings.

[0040] Embodiment 1

[0041] As Figures 1 to 4 shown, this embodiment provides an air guiding bag, including a pre-folded structure 10. The pre-folded structure 10 is folded and edge-sewn to form the air guiding bag 1. The pre-folded structure 10 includes a first air guiding cloth piece 11 and a second air guiding cloth piece 12 which are overlapped.

[0042] Among them, the pre-folded structure 10 is a semi-assembled structure formed by overlapping multiple air guiding cloth pieces, and it can directly form the air guiding bag 1 after being folded and edge-sewn.

[0043] For example, after multiple air guiding cloth pieces are overlapped to form the pre-folded structure 10, the pre-folded structure 10 is folded along the midline and edge-sewn to form the air guiding bag 1.

[0044] Among them, both the first air guiding cloth piece 11 and the second air guiding cloth piece 12 can be one or more.

[0045] Preferably, both the first air guiding cloth piece 11 and the second air guiding cloth piece 12 are one, so that the side wall of the folded air guiding bag 1 is a double-layer cloth piece structure.

[0046] Furthermore, the pre-folded structure 10 further includes a reinforcing cloth piece 13. The reinforcing cloth piece 13 is sewn on the side of the first air guiding cloth piece 11 facing the second air guiding cloth piece 12 and is located between the first air guiding cloth piece 11 and the second air guiding cloth piece 12. Among them, when the gas generator 2 is installed into the plug-in port of the air guiding bag 1, the reinforcing cloth piece 13 is correspondingly arranged with the air outlet of the gas generator 2.

[0047] Among them, when the gas generator 2 is installed into the plug-in port of the air guiding bag 1, the reinforcing cloth piece 13 is located in the air outlet direction of the gas generator 2 to directly receive the gas released by the gas generator 2.

[0048] Among them, the reinforcement patch 13 is used to reinforce the part of the air guide bag 1 corresponding to the air outlet of the gas generator 2, so as to prevent the air guide bag 1 from being damaged by the high-temperature and high-pressure gas or residues generated during the initial detonation of the gas generator 2.

[0049] Among them, the reinforcement patch 13 can be one layer or multiple layers.

[0050] In some embodiments, the number of layers of the reinforcement patch 13 can be reasonably set according to the air outlet intensity of the gas generator 2.

[0051] Preferably, the size of the reinforcement patch 13 is smaller than that of the first air guide patch 11, so as to save materials while playing a reinforcing role.

[0052] Among them, after the reinforcement patch 13 is sewn on the side of the first air guide patch 11 facing the second air guide patch 12, the reinforcement patch 13 is located between the first air guide patch 11 and the second air guide patch 12. Thus, after the pre-folded structure 10 is folded and the edges are sewn to form the air guide bag 1, the reinforcement patch 13 is located inside the double-layer patch on the side wall of the air guide bag 1. Finally, when the gas generator 2 is inserted into the air guide bag 1, since the reinforcement patch 13 is located between the double-layer patches on the side wall of the air guide bag 1, the cavity of the air guide bag 1 also shows a flat structure as a whole. When the gas generator 2 is inserted into the insertion port of the air guide bag 1, the edge of the reinforcement patch 13 will not turn over to block the gas generator 2, thus solving the problem in the prior art that the convex part formed after the edge of the reinforcement patch 13 turns over along the sewing line blocks the insertion of the gas generator 2 into the air guide bag 1.

[0053] In some embodiments, there can be multiple reinforcement patches 13, which can be set on the same first air guide patch 11 at the same time, or multiple reinforcement patches 13 can be correspondingly set on multiple air guide patches included in the pre-folded structure 10.

[0054] For example, when there are two reinforcement patches 13 and two air guide patches respectively, a first reinforcement patch 13 is provided on the side of the first air guide patch 11 facing the second air guide patch 12, and a second reinforcement patch 13 is provided on the side of the second air guide patch 12 facing the first air guide patch 11.

[0055] Preferably, only one reinforcement patch 13 can be set on the side of the first air guide patch 11 facing the second air guide patch 12 to reduce production costs and save materials.

[0056] Among them, since the reinforcement patch 13 is correspondingly arranged with the air outlet of the gas generator 2, the reinforcement patch 13 can receive the high-temperature and high-pressure gas and residues generated by the gas generator 2, so as to at least ensure the integrity of the function of the air guide bag 1.

[0057] Further, the pre-folded structure 10 is folded towards the direction where the first air guide cloth piece 11 is located, so as to fold the sewing thread connecting the reinforcing cloth piece 13 and the first air guide cloth piece 11 to the inside of the air guide bag 1.

[0058] Wherein, by folding the sewing thread connecting the reinforcing cloth piece 13 and the first air guide cloth piece 11 to the inside of the air guide bag 1, the outer surface of the air guide bag 1 can be made smooth as a whole, so as to avoid the sewing thread connecting the reinforcing cloth piece 13 and the first air guide cloth piece 11 from rubbing against the sacculus, and to ensure the integrity of the sacculus.

[0059] Wherein, the pre-folded structure 10 is folded along the center line of the pre-folded structure 10, and the center line of the folded first air guide cloth piece 11 is correspondingly arranged with the center line of the reinforcing cloth piece 13.

[0060] Wherein, the reinforcing cloth piece 13 has a certain width, and after folding, it can completely wrap the part of the gas generator 2 inserted into the air guide bag 1 along the circumferential direction of the gas generator 2.

[0061] Further, when the gas generator 2 is installed into the insertion port of the air guide bag 1, at least part of the reinforcing cloth piece 13 wraps the air outlet of the gas generator 2, so as to prevent the high-temperature and high-pressure gas generated by the gas generator 2 from breaking through the air guide bag 1.

[0062] For example, after the gas generator 2 is inserted into the insertion port of the air guide bag 1, the gas generator 2 is fixed in the air guide bag 1 by a clamp, and the reinforcing cloth piece 13 at least wraps the part of the gas generator 2 between the clamp and the air outlet of the gas generator 2.

[0063] Furthermore, at least part of the reinforcing cloth piece 13 is located in the air outlet direction of the gas generator 2, and there is a preset distance between the end of the reinforcing cloth piece 13 far from the gas generator 2 and the air outlet of the gas generator 2, so that the high-temperature and high-pressure gas of the gas generator 2 still has the reinforcing cloth piece 13 for protection after releasing a predetermined distance, and to avoid that the reinforcing cloth piece 13 is too short to play an adequate protective role.

[0064] In some embodiments, the reinforcing cloth piece 13 is fixed to the first air guide cloth piece 11 through the sewing thread part 14, and the sewing thread part 14 extends along the edge of the reinforcing cloth piece 13.

[0065] Wherein, the sewing thread part 14 can be an annular sewing thread part 14, such as a square shape.

[0066] Wherein, the sewing thread part 14 can be composed of a section of continuous sewing thread, or can be composed of multiple sections of continuous sewing threads.

[0067] Preferably, the sewing thread part 14 is composed of a section of continuous sewing thread, and the sewing thread part 14 is sewn between the reinforcing cloth piece 13 and the first air guide cloth piece 11.

[0068] Among them, the specific shape of the sewing part 14 is adapted to the shape of the reinforcing cloth piece 13. For example, when the reinforcing cloth piece 13 is rectangular, the sewing part 14 is in a square shape. If the reinforcing cloth piece 13 is circular or other irregular shapes, the sewing part 14 extends along the edge of the reinforcing cloth piece 13.

[0069] For example, according to the different shapes of the reinforcing cloth piece 13, the sewing part 14 as a whole can be set as an arc structure or a broken line structure composed of multiple line segments.

[0070] Furthermore, when the pre-folded structure 10 is in an unfolded and flat state, the sewing part 14 is set as a seamless line area 141 facing the forming area of the insertion port of the air guide bag 1, so as to save the length of the sewing line and make the internal cavity of the air guide bag 1 more flat.

[0071] Among them, after the pre-folded structure 10 is folded and the edges are sewn to form the air guide bag 1, since one side of the reinforcing cloth piece 13 facing the insertion port of the gas generator 2 is the seamless line area 141, there is no sewing line on the insertion path of the gas generator 2 at this time. Therefore, when the gas generator 2 is inserted into the air guide bag 1, it can be installed in place at one time, avoiding the sewing line from jamming the tubular edge of other generators when the gas generator 2 is inserted into the insertion port, and reducing the length of the sewing line and saving the sewing time when fixing the reinforcing cloth piece 13.

[0072] Among them, after setting the seamless line area 141 in the area where the sewing part 14 faces the forming area of the insertion port of the air guide bag 1, the airtightness of the air guide bag 1 can also be further improved, avoiding the reduction of the airtightness of the air guide bag 1 due to the excessive length of the sewing line area.

[0073] Furthermore, at least one end of the sewing part 14 far from the forming area of the insertion port of the air guide bag 1 is provided with a transverse sewing line area 142, and the transverse sewing line area 142 is used to tightly fix the reinforcing cloth piece 13 to the first air guide cloth piece 11 to prevent it from detaching from the first air guide cloth piece 11 under severe impact.

[0074] Among them, after setting the transverse sewing line area 142 at the area where the sewing part 14 is far from the forming area of the insertion port of the air guide bag 1, it can also play a certain blocking role during the installation of the gas generator 2 to remind the staff that the installation of the gas generator 2 is incorrect.

[0075] For example, when the gas generator 2 is installed into the insertion port of the air guide bag 1, if the tubular edge of the gas generator 2 is jammed by the transverse sewing line area 142, it indicates that the insertion area of the gas generator 2 is too long and needs to be pulled outwards.

[0076] Preferably, the sewing part 14 is a U-shaped structure as a whole, the opening part of the sewing part 14 is the seamless line area 141, and its closed part is the transverse sewing part.

[0077] In some of these embodiments, both ends of the suture portion 14 are bent to both sides to form an arc structure, so as to prevent the two ends of the suture portion 14 from being burst open due to excessive stress.

[0078] The installation process of an air guiding bag 1 of the present utility model is as follows:

[0079] Sew the reinforcing fabric piece 13 on the first air guiding fabric piece 11 through the sewing portion, and the sewing portion is sewn along the edge of the reinforcing fabric piece 13, and a suture-free area 141 is formed at one end of the sewing portion close to the area of the insertion opening of the air guiding bag 1.

[0080] Lay the second air guiding fabric piece 12 on the reinforcing fabric piece 13 and the first air guiding fabric piece 11, so that the reinforcing fabric piece 13 is located between the first air guiding fabric piece 11 and the second air guiding fabric piece 12.

[0081] Form a pre-folded structure 10 for the first air guiding fabric piece 11 and the second air guiding fabric piece 12.

[0082] Fold the pre-folded structure 10 along the midline and perform edge sewing and closing treatment to form the air guiding bag 1.

[0083] When an air guiding bag 1 of this embodiment is applied to the extreme working conditions of high temperature and high explosion of a side air curtain, it can resist the high temperature and high pressure impact of the gas generator 2, prevent small holes from being burned out in the gas direct impact area on the air guiding bag 1, and can meet the requirements of relevant regulations (6s pressure retention and integrity of the side air curtain).

[0084] In this embodiment, by arranging the reinforcing fabric piece 13 in the gas direct impact area of the gas generator 2 of the air guiding bag 1, the problem that the air guiding fabric piece has weak strength or the gas outlet of the gas generator 2 is too strong, resulting in the failure of the air bag due to a hole, can be avoided.

[0085] In this embodiment, by adjusting the positions of the main fabric piece and the reinforcing piece of the air guiding bag 1, the problems that the reinforcing piece will hinder the insertion of the gas generator 2 and the suture of the reinforcing piece will scratch the air bag are solved.

[0086] This embodiment adopts U-shaped sewing and arranges the U-shaped sewing in the direct blowing area of the gas outlet of the gas generator 2. Since the strength of the suture is strong, the suture area is directly blown first during the detonation process. The suture is used as the first stress area, which can greatly reduce the risk of holes in the first air guiding fabric piece 11. And compared with circular sewing (such as mouth-shaped suture), the problems of difficulty in pre-installing the gas generator 2 during the production process and inability to be installed in place in one step are solved, saving working hours and improving production efficiency.

[0087] Embodiment 2

[0088] This embodiment provides an airbag, which includes an airbag pouch, an air guiding bag 1 as described in any one of Embodiment 1, and a gas generator 2. Among them, the air guiding bag 1 is installed inside the airbag pouch; the gas generator 2 is installed on the air guiding bag 1, and the air outlet of the gas generator 2 is arranged corresponding to the reinforcing fabric piece 13.

[0089] Among them, the air guiding bag 1 is stuffed into the air inlet of the airbag pouch, and the air outlet of the air guiding bag 1 is arranged corresponding to the unfolding area of the airbag pouch.

[0090] Among them, the gas generator 2 is stuffed into the stuffing port of the air guiding bag 1 and arranged corresponding to the reinforcing fabric piece 13, so that the reinforcing fabric piece 13 can receive the high-temperature and high-pressure gas released by the gas generator 2.

[0091] In this specification, the same or similar parts among the various embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the product embodiments described later, since they correspond to the methods, the descriptions are relatively simple, and the relevant parts can be referred to the descriptions of the system embodiments.

[0092] As described above, the above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An air guide bag, comprising a pre-folded structure, wherein the air guide bag is formed after the pre-folded structure is folded and its edges are sewn. The pre-folded structure comprises a first air guide fabric piece and a second air guide fabric piece which are arranged overlappingly, and is characterized in that, The pre-folded structure further includes a reinforcing cloth piece, which is sewn on the side of the first air guide cloth piece facing the second air guide cloth piece and is located between the first air guide cloth piece and the second air guide cloth piece.

2. The air guide bag according to claim 1, wherein The pre-folded structure is folded towards the direction where the first air guide cloth piece is located.

3. The air guide bag according to claim 1, characterized in that, When the gas generator is installed into the plug-in opening of the air guide bag, at least part of the reinforcing cloth piece wraps the air outlet of the gas generator.

4. The air guide bag according to claim 3, wherein At least part of the reinforcing cloth piece is located in the air outlet direction of the gas generator, and there is a preset distance between the end of the reinforcing cloth piece far from the gas generator and the air outlet of the gas generator.

5. The air guiding bag according to any one of claims 1 to 4, characterized in that, The reinforcing cloth piece is fixed to the first air guide cloth piece through a stitching part.

6. The air guide bag according to claim 5, characterized in that, When the pre-folded structure is in an unfolded and flat state, the stitching part is set as a stitch-free area towards the area formed by the plug-in opening of the air guide bag.

7. The air guide bag according to claim 6, wherein, At least one end of the stitching part far from the area formed by the plug-in opening of the air guide bag is provided with a transverse stitch area.

8. The air guide bag according to claim 7, characterized in that, The stitching part is an arc structure as a whole or a broken line structure composed of multiple line segments.

9. The air guide bag according to claim 7, characterized in that, The stitching part is a U-shaped structure as a whole, and the opening part of the stitching part is the stitch-free area.

10. An airbag, characterized in that, Comprising: A bladder; An air guide bag according to any one of claims 1 to 9, the air guide bag is installed in the bladder; A gas generator, the gas generator is installed on the air guide bag, and the air outlet of the gas generator is correspondingly arranged with the reinforcing cloth piece.

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