A method of folding an airbag pack and airbag

Abstract

The application discloses a kind of air bag package and air bag folding method, including air bag, gas generator and outer wrapping, air bag folding is set in outer wrapping, gas generator is set in outer wrapping, and is connected with air bag, air bag package further includes weakening part, weakening part is set on the side wall of air bag folding part of outer wrapping towards air bag, and the projection plane of the end of air bag folding part on the side wall of outer wrapping.The application solves the problem that the existing outer wrapping breaking mode is unstable and easy to produce scattered cloth piece to cause potential danger to the passenger, improves the safety of the passenger.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile airbag, in particular to a folding method of airbag package and airbag. BACKGROUND

[0002] The airbag package is a safety device working in emergency situations such as vehicle collision, which inflates and unfolds the airbag cushion to catch the passenger for protection. The airbag cushion in the airbag package needs to be rapidly unfolded under the action of the gas generator. Because the airbag cushion unfolds very quickly, there should be no foreign matter with a weight exceeding 3 grams in the unfolding direction of the airbag cushion to avoid causing harm to the passenger.

[0003] The existing airbag package usually includes an airbag, a gas generator and an outer wrapping piece, and a weakened part is arranged on the outer wrapping piece, and the weakened part is generally arranged in the front of the vehicle in the forward direction, so that when the gas generator generates gas, the airbag tears the weakened part on the outer wrapping piece to rapidly unfold and protect the passenger. However, in actual use, due to the folding method of the airbag, the weakened part of the outer wrapping piece cannot be torn, so that the airbag breaks the part other than the weakened part on the outer wrapping piece, resulting in unstable breaking of the outer wrapping piece and flying pieces of cloth, which undoubtedly poses a potential risk to the passenger.

[0004] Therefore, a new technical solution is needed. SUMMARY

[0005] Therefore, the embodiment of the present application provides a folding method of airbag package and airbag to at least solve the problem of unstable breaking of the existing outer wrapping piece and the generation of flying pieces of cloth to cause potential danger to the passenger.

[0006] The embodiment of the present application provides the following technical solutions:

[0007] The embodiment of the present application provides an airbag package, which comprises an airbag, a gas generator and an outer wrapping piece, the airbag is folded and arranged in the outer wrapping piece, the gas generator is arranged in the outer wrapping piece and connected with the airbag, and the airbag package further comprises:

[0008] A weakened part is arranged on the side wall of the outer wrapping piece facing the airbag folding part of the airbag, and is located on the projection plane of the end of the airbag folding part on the side wall of the outer wrapping piece.

[0009] Further, the weakened part is projected on the projection line of the outer wrapping piece at the end of the airbag folding part.

[0010] Further, the weakened part is projected on the first side of the projection line of the outer wrapping piece at the end of the airbag folding part, wherein the first side is the side of the projection line close to the airbag folding part.

[0011] Further, the distance between the weakening portion and the projection line is less than 20mm.

[0012] Further, the two ends of the weakening portion are bent or the outer wrapping part of the two ends of the weakening portion is set as a notch.

[0013] Further, the weakening portion is set as a straight line type.

[0014] Further, the weakening portion is set as a curved line type.

[0015] A folding method of an airbag of the present application comprises:

[0016] The airbag is divided into a first end and a second end based on the center line of the airbag;

[0017] The first end and the second end of the airbag are folded respectively;

[0018] The first end and the second end of the airbag are folded from the edge of the airbag to the direction of the gas generator to form an airbag folding portion, wherein the edge of the airbag is the edge of the airbag away from the gas generator.

[0019] Further, the first end and the second end of the airbag are folded respectively based on the folding, Z-folding or inner plug manner.

[0020] Further, after the first end and the second end of the airbag are folded respectively, the side of the first end and the second end of the airbag away from the center line is a straight line side.

[0021] Compared with the prior art, the above-mentioned at least one technical scheme adopted by the embodiments of the present application can achieve at least the following beneficial effects:

[0022] The airbag bag of the present application sets the weakening portion on the projection surface of the end of the airbag folding portion on the outer wrapping part side wall, so that in the case of rapid expansion of the airbag, the outer wrapping part can be broken from the weakening portion, avoiding the airbag breaking other parts of the outer wrapping part and producing scattered cloth pieces, solving the problem of unstable breaking of the outer wrapping part of the existing airbag bag and the potential danger of the scattered cloth pieces to the passengers, and improving the safety of the passengers. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0024] Figure 1 It is a perspective view of the airbag bag of the present application.

[0025] Figure 2 Figure 2 is a side view of an airbag pack according to an embodiment of the present application;

[0026] Figure 3 Figure 3 is a cross-sectional view of an airbag pack according to an embodiment of the present application;

[0027] Figure 4 Figure 4 is a schematic view of an outer cover being unfolded according to an embodiment of the present application (1);

[0028] Figure 5 Figure 5 is a schematic view of an outer cover being folded according to an embodiment of the present application (1);

[0029] Figure 6 Figure 6 is a schematic view of an outer cover being unfolded according to an embodiment of the present application (2);

[0030] Figure 7 Figure 7 is a schematic view of an outer cover being folded according to an embodiment of the present application (2);

[0031] Figure 8 Figure 8 is a schematic view of an outer cover being unfolded according to an embodiment of the present application (3);

[0032] Figure 9 Figure 9 is a schematic view of an outer cover being folded according to an embodiment of the present application (3);

[0033] Figure 10 Figure 10 is a schematic view of a gas bag being folded according to an embodiment of the present application;

[0034] Reference signs of the present application are as follows:

[0035] 10: gas bag; 11: gas bag folding portion; 20: gas generator; 30: outer cover; 40: weakened portion. DETAILED DESCRIPTION

[0036] The embodiments of the present application will be described in detail below with reference to the drawings.

[0037] The above embodiments of the present application are described with reference to the drawings, but the present application is not limited to the above embodiments. It will be readily appreciated by those skilled in the art that changes can be made to the embodiments described and that various advantages and modifications can be obtained from the embodiments without departing from the scope of the present application. Therefore, the scope of the present application should be limited only by the attached claims rather than by the above description, and all changes and modifications that come within the scope of the present application are intended to be embraced by the appended claims.

[0038] It is important to note that the various aspects described throughout this disclosure can be implemented in any number of forms, and that the specifics set forth in any particular implementation are merely exemplary. An aspect or any portion thereof can be implemented with respect to either hardware or software or a combination thereof. Any features described as being implemented in software are typically implemented in one or more computer programs or one or more programs of instructions configured to carry out the applicable functions / operations. The computer programs include a plurality of instructions that are stored or are otherwise accessible to a computer. These instructions prove the operational logic for the software and are described in English, Chinese, or any other language suitable for the task at hand. These instructions are arranged or structured in this manner to provide an orderly sequence of steps for carrying out the intended functionality. The computer programs can be organized as one or more objects, components, classes, modules, or the like, and can be written in any of a number of suitable computer languages, including, but not limited to, C, C++, Java, Visual Basic, and the like.

[0039] It is also important to note that the present application can be carried out in a great variety of forms without departing from the application as set forth in the claims. The following embodiments are illustrative only and are not meant to limit or restrict the scope of the application as set forth in the claims.

[0040] Furthermore, in the following description, numerous specific details are set forth to provide a thorough understanding of the examples. However, it will be apparent to one skilled in the art that the specifics there of can not be required.

[0041] The prior art airbag bag is provided with a breakable deployment line, and the deployment line is arranged in front of the front of the vehicle, but due to the variable folding direction of the airbag, a plurality of foldings correspond to one breakable direction, which causes the breaking mode of the outer cover 30 to be unstable, resulting in the cloth flying, which causes potential danger to the passengers.

[0042] In a Chinese patent with publication number CN114585542A, a side airbag device is disclosed. In the patent, a fragile part is arranged on the outer cover, and the fragile part is arranged on one side of the outer cover away from the airbag folding part and close to the gas generator. In the patent, since the fragile part is away from the airbag folding part, when the airbag inflates, the airbag cannot contact the fragile part at the first time, and then cannot break the fragile part at the first time, which undoubtedly causes other parts of the outer cover to be broken, resulting in unstable breaking mode of the outer cover, thereby easily causing the cloth to fly, which causes potential danger to the passengers.

[0043] Based on this, the embodiment of the present application proposes a processing scheme: by arranging the breakable deployment line on the side wall of the outer cover 30 corresponding to the folding end of the airbag 10, and arranging the deployment line on the projection line of the folding end of the airbag 10 on the panel or on the side close to the airbag folding part 11, so that the airbag 10 can directly impact the deployment line when it inflates, to stabilize the breaking mode of the outer cover 30, and avoid the cloth from breaking and flying out.

[0044] The technical scheme provided by the embodiments of the present application is described below with reference to the drawings.

[0045] Embodiment 1

[0046] As shown in the figure, the airbag package provided by the embodiments of the present application comprises an airbag 10, a gas generator 20, an outer wrapping member 30 and a weakened portion 40. Figures 1-3 The airbag 10 is folded and arranged in the outer wrapping member 30, the gas generator 20 is arranged in the outer wrapping member 30 and connected with the airbag 10, and the weakened portion 40 is arranged on the side wall of the outer wrapping member 30 facing the airbag folding portion 11 of the airbag 10 and located on the projection plane of the end portion of the airbag folding portion 11 on the side wall of the outer wrapping member 30.

[0047] The airbag 10 and the gas generator 20 are both prior art and are installed in the same way as the prior art, and thus will not be described again here.

[0048] The airbag 10 is directly installed in the outer wrapping member 30.

[0049] The outer wrapping member 30 can be a soft fabric or a felt material.

[0050] The weakened portion 40 can be a breakable unfolding line or an adhesive member, etc.

[0051] Preferably, the weakened portion 40 is a breakable unfolding line.

[0052] The airbag folding portion 11 is the portion of the airbag 10 that is folded.

[0053] Due to the folding manner, the end portion of the airbag folding portion 11 is the end of the airbag folding portion 11 close to the gas generator 20.

[0054] The end portion of the airbag folding portion can be arranged close to the passenger side, the door side or the front of the vehicle.

[0055] By arranging the weakened portion 40 on the projection plane of the end portion of the airbag folding portion 11 on the side wall of the outer wrapping member 30, when the airbag 10 is inflated, the airbag 10 can directly press the outer wrapping member 30, causing the outer wrapping member 30 to break at the weakened portion, and then the airbag 10 can break out, thereby solving the problem of unstable breaking of the airbag package in the prior art and the problem of easy scattering of the cloth pieces.

[0056] The present application arranges the weakened portion 40 on the projection plane of the end portion of the airbag folding portion 11 on the side wall of the outer wrapping member 30 without changing the layout and overall structure of the outer wrapping member 30, so that the production line does not need to be adjusted and the modification is convenient, and the outer wrapping member 30 can be easily broken by the airbag 10 to avoid scattering of the cloth pieces.

[0057] The present invention provides a weakening part 40 on the projection surface of the end of the air bag folding part 11 on the side wall of the outer wrapping 30. The air bag 10 can directly apply a longitudinal force to the weakening part 40, thereby increasing the longitudinal force received by the weakening part 40 from the air bag 10 and reducing the horizontal tearing force received by the outer wrapping 30. This makes it easier for the outer wrapping 30 to be torn open by the air bag 10, solving the problem in the prior art where the outer wrapping 30 is subjected to a strong horizontal force, resulting in an unstable tearing mode and the generation of scattered fabric pieces.

[0058] In some embodiments, the weakened portion 40 is projected onto the projection line of the outer wrapping 30 at the end of the air bag fold 11 so that the air bag 10 can break through the outer wrapping 30.

[0059] In some embodiments, the weakened portion 40 is projected onto a first side of the projection line of the outer wrapping 30 at the end of the air bag fold portion 11, wherein the first side is the side of the projection line closer to the air bag fold portion 11.

[0060] Specifically, by projecting the weakened portion 40 onto the first side of the projection line of the outer wrapping 30 at the end of the air bag fold 11, the air bag 10 can directly break through the weakened portion 40 to avoid generating scattered pieces of cloth.

[0061] In some of these embodiments, the distance between the weakened portion 40 and the projection line is less than 50 mm.

[0062] Preferably, the distance between the weakened portion 40 and the projection line is less than 30 mm.

[0063] More preferably, the distance between the weakened portion 40 and the projection line is less than 20 mm.

[0064] In some of these embodiments, such as Figures 4-5 As shown, the two ends of the weakened part 40 are bent or the outer wrapping 30 at both ends of the weakened part 40 is notched.

[0065] In this case, by bending the two ends of the weakened part 40 or setting the outer wrapping 30 at both ends of the weakened part 40 as notches, it is easy to tear the outer wrapping 30 and make it easy for the air bag 10 to break out from the outer wrapping 30.

[0066] In some of these embodiments, such as Figures 4-5 As shown, when the two ends of the weakened portion 40 are bent, the outer wrapping 30 can be broken along the extending direction of the weakened portion 40, thereby increasing the size of the opening in the outer wrapping 30.

[0067] In some of these embodiments, such as Figures 5-6 As shown, when the outer wrapping 30 at both ends of the weakened portion 40 is provided with notches, the weakened portion 40 can be broken more easily, and the size of the opening in the outer wrapping 30 is increased.

[0068] In some embodiments, the weakening portion 40 is provided in a straight line type.

[0069] In some embodiments, as shown in Figures 7-8 the weakening portion 40 is provided in a curved line type, such as a wave type or a zigzag type.

[0070] In the case of the folded airbag 10, the weakening portion 40 is provided where the airbag is folded or near the folded end, thereby avoiding the problem of failure of the outer cover 30 when it is unfolded. On the other hand, in the case of a side airbag, when the lifting function is implemented, it is desirable that the airbag 10 is closer to the human body when it is unfolded, and the weakening portion 40 is provided on the panel of the outer cover 30 corresponding to the human body, which is more conducive to the unfolding type of lifting function.

[0071] Embodiment 2

[0072] As shown in Figure 10 the center line in the figure, a folding method of an airbag of the present application comprises:

[0073] Step S102, dividing the airbag into a first end and a second end based on the center line of the airbag;

[0074] Step S104, respectively folding the first end and the second end of the airbag;

[0075] Step S106, folding the first end and the second end of the airbag from the edge of the airbag to the direction of the gas generator to form an airbag folding portion, wherein the edge of the airbag is the edge of the airbag away from the gas generator.

[0076] Further, the first end and the second end of the airbag are respectively folded in a folding, Z-folding or inner plug manner.

[0077] Among them, the first end of the airbag can be folded in a folding, Z-folding or inner plug manner, and the second end of the airbag can be folded in a folding, Z-folding or inner plug manner, so as to reduce the width of the airbag, thereby facilitating subsequent installation of the airbag.

[0078] Among them, the folding is to fold the airbag in a winding folding manner; the Z-folding is to fold the airbag in a Z-shaped folding manner; and the inner plug is to fold the airbag in a manner of inserting the edge of the airbag into the airbag.

[0079] For example, the first end of the airbag is folded towards the center line of the airbag in a folding manner, and the second end of the airbag is folded towards the center line of the airbag in a Z-folding manner.

[0080] Further, after respectively folding the first end and the second end of the airbag, the side of the first end and the second end of the airbag away from the center line is a straight line side.

[0081] Wherein, after folding the first end and the second end of the airbag respectively, the airbag has at least two straight edges in the flat state, so as to facilitate subsequent installation of the airbag into the outer wrapping member.

[0082] Wherein, the airbag is located at the passenger side or the door side.

[0083] In the specification, the same or similar parts among various embodiments are referred to each other, and each embodiment focuses on the difference from other embodiments. Especially, for the product embodiment described later, since it is corresponding to the method, the description is relatively simple, and the relevant part is referred to the part of the system embodiment.

[0084] The above merely describes the specific embodiments of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of the changes or replacements within the technical range disclosed by the present application, which should be covered in 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 airbag pack, comprising an air bag, a gas generator, and an outer wrapping, wherein the air bag is folded and disposed within the outer wrapping, and the gas generator is disposed within the outer wrapping and connected to the air bag, characterized in that, The airbag package also includes: A weakening portion is provided on the side wall of the air bag fold portion of the outer wrapping facing the air bag, and located on the projection surface of the end of the air bag fold portion on the side wall of the outer wrapping, so as to apply a longitudinal force to the weakening portion, wherein the air bag fold portion is formed by folding or Z-folding the edge portion away from the gas generator towards the direction of the gas generator when the air bag is laid flat; The weakening portion is disposed at the end of the air bag fold portion and projected onto the projection line of the outer wrapping, or the weakening portion is disposed at the end of the air bag fold portion and projected onto the first side of the projection line of the outer wrapping, wherein the first side is the side of the projection line closer to the air bag fold portion.

2. The airbag pack according to claim 1, characterized in that, The distance between the weakened part and the projection line is less than 20mm.

3. The airbag pack according to claim 1, characterized in that, The weakened portion is bent at both ends or the outer wrapping portion at both ends of the weakened portion is notched.

4. The airbag pack according to claim 1, characterized in that, The weakened part is configured as a straight line.

5. The airbag pack according to claim 1, characterized in that, The weakened part is set to a curved shape.

Images