An automobile airbag device

Abstract

The embodiment of the present specification provides an automobile airbag device, comprising an airbag and a gas generator, the airbag is provided with a mounting port matched with the gas generator, the airbag is folded along a folding line, the airbag comprises a first chamber and a second chamber which are separately arranged on both sides of the mounting port, a first suture is arranged at the top edge of the first chamber, and a second suture is arranged at the top edge of the second chamber; wherein the horizontal plane where the first suture is located is higher than the horizontal plane where the second suture is located, the folding line is not lower than the second suture, and the folding line is lower than the first suture, and the inflation area of the first chamber is at least partially above the folding line, so that when the airbag is inflated and unfolded, the first chamber is inclined to the direction close to the automobile interior. When the airbag is inflated and unfolded, because there is an inflation area above the folding line, the first chamber is pushed out at a certain angle to the interior direction when the airbag is inflated and then unfolded, so that the airbag is prevented from drifting outward, and the protection effect on the passenger is ensured.

Description

Technical Field

[0001] This specification relates to the field of automotive airbag technology, specifically to an automotive airbag device. Background Technology

[0002] Side airbags are a common type of car airbag. In a collision, especially a side impact, they can reduce the risk of fractures and other injuries to the occupants' arms and ribs when they collide directly with the door panel. Currently, in minor offset collisions, the front airbag, when normally folded (with the folded position being the same distance from the edge of the front and rear airbag inflation areas), is prone to outward displacement due to the impact force, while the rear airbag deploys normally, which is detrimental to the protection of the driver and front passenger. Summary of the Invention

[0003] In view of this, the embodiments of this specification provide an automotive airbag device. When the airbag is inflated and deployed, because there is an inflation area above the fold line, the first chamber is pushed towards the vehicle at a certain angle before unfolding, thereby preventing the airbag from floating outward and ensuring the protective effect on the occupants.

[0004] This specification provides the following technical solution in its embodiments: an automotive airbag device, including an airbag and a gas generator, wherein the airbag is provided with an installation port that cooperates with the gas generator, the airbag is folded along a folding line, and the airbag includes a first chamber and a second chamber respectively disposed on both sides of the installation port, wherein a first seam is provided at the top edge of the first chamber, and a second seam is provided at the top edge of the second chamber;

[0005] Wherein, the horizontal plane of the first seam is higher than the horizontal plane of the second seam, the fold line is not lower than the second seam and the fold line is lower than the first seam, and the inflation area of ​​the first chamber is at least partially above the fold line, so that when the air bag is inflated and unfolded, the first chamber tilts toward the direction closer to the car interior.

[0006] Preferably, the first seam and the fold line are parallel to each other, and the second seam and the fold line are parallel to each other or overlap.

[0007] Preferably, the distance between the first seam and the fold line is 1mm to 20mm.

[0008] Preferably, the distance between the first seam and the fold line is 10mm, and the tilt angle of the first chamber towards the inside of the car after it is unfolded is 20° to 30°.

[0009] Preferably, the distance between the first seam and the fold line is 20mm, and the tilt angle of the first chamber towards the inside of the car after it is unfolded is 30° to 40°.

[0010] Preferably, along the length of the vehicle body, the first chamber is the front chamber and the second chamber is the rear chamber.

[0011] Preferably, along the length of the vehicle body, the first chamber is the rear chamber and the second chamber is the front chamber.

[0012] Preferably, the airbag includes a side airbag.

[0013] Preferably, the side airbag includes a curtain airbag, a seat side airbag, or a distal side airbag.

[0014] Compared with the prior art, the beneficial effects that at least one technical solution adopted in the embodiments of this specification can achieve include at least:

[0015] By setting the position of the first seam at the top of the first chamber higher than the position of the second seam at the top of the second chamber, and ensuring that the fold line of the airbag is not lower than the second seam but lower than the first seam, an inflation area for the first chamber is created above the fold line. When the airbag inflates and unfolds, the inflation area above the fold line causes the first chamber to be pushed towards the vehicle at a certain angle before unfolding, thus preventing the airbag from floating outward and ensuring the protective effect on the occupants. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a structural schematic diagram of the automotive airbag device provided in this application;

[0018] Figure 2 This is a schematic diagram of the structure of the automobile airbag device provided in this application when it is deployed;

[0019] Figure 3 This is a schematic diagram of the structure of the second chamber of the automotive airbag device provided in this application when it is deployed;

[0020] Figure 4 This is a schematic diagram of the structure of the first chamber of the automobile airbag device provided in this application when it is tilted slightly during deployment;

[0021] Figure 5 This is a schematic diagram of the structure of the first chamber of the automotive airbag device provided in this application when it is tilted significantly during deployment.

[0022] In the diagram, 1 is the air bag; 2 is the fold line; 3 is the mounting port; 4 is the first seam; 5 is the second seam; 6 is the first chamber; and 7 is the second chamber. Detailed Implementation

[0023] The embodiments of this application will now be described in detail with reference to the accompanying drawings.

[0024] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. This application can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] It should be noted that various aspects of embodiments within the scope of the appended claims are described below. It will be apparent that the aspects described herein can be embodied in a wide variety of forms, and any particular structure and / or function described herein is merely illustrative. Based on this application, those skilled in the art will understand that one aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspects set forth herein can be used to implement the device and / or practice the method. Additionally, this device and / or method can be implemented using structures and / or functionalities other than one or more of the aspects set forth herein.

[0026] It should also be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. The drawings only show the components related to this application and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0027] Furthermore, specific details are provided in the following description to facilitate a thorough understanding of the examples. However, those skilled in the art will understand that the described aspects can be practiced without these specific details.

[0028] Currently, when a car undergoes a minor side impact collision, the front chamber of a normally folded side airbag (the folding position is the same distance from the edge of the front and rear inflatable chambers) is prone to outwards due to the impact force, while the rear chamber deploys normally, which is not conducive to the protection of the driver and front passenger.

[0029] The inventors conducted extensive and in-depth experiments and designed a car airbag device.

[0030] The technical problem solved by this application is to address the issue of side airbags easily drifting outwards in the prior art.

[0031] More specifically, the solution adopted in this application includes: by setting the position of the first seam at the top of the first chamber higher than the position of the second seam at the top of the second chamber, and the fold line of the airbag is not lower than the second seam and the fold line is lower than the first seam, so that there is an inflation area of ​​the first chamber above the fold line. When the airbag is inflated and unfolded, because there is an inflation area above the fold line, the airbag will push the first chamber towards the vehicle at a certain angle before unfolding, thereby preventing the airbag from floating outward and ensuring the protection of the occupants.

[0032] The technical solutions provided by the various embodiments of this application are described below with reference to the accompanying drawings.

[0033] like Figures 1-2 As shown, an automotive airbag device includes an airbag 1 and a gas generator. The airbag 1 is provided with an installation port 3 that cooperates with the gas generator. The gas outlet of the gas generator is installed at the installation port 3 on the airbag 1. The airbag 1 is folded along a fold line 2. The airbag 1 includes a first chamber 6 and a second chamber 7 respectively disposed on both sides of the installation port 3. A first seam 4 is provided at the top edge of the first chamber 6, and a second seam 5 is provided at the top edge of the second chamber 7.

[0034] Wherein, the horizontal plane where the first seam 4 is located is higher than the horizontal plane where the second seam 5 is located, the fold line 2 is not lower than the second seam 5, and the fold line 2 is lower than the first seam 4, and the inflation area of ​​the first chamber 6 is at least partially above the fold line 2, so that when the air bag 1 is inflated and unfolded, the first chamber 6 tilts toward the direction closer to the inside of the car.

[0035] By setting the first seam 4 at the top of the first chamber 6 in a first position and the second seam 5 at the top of the second chamber 7 in a second position, with the first position being higher than the second position, the airbag 1 is folded along the fold line 2. The fold line 2 coincides with or is higher than the second seam 5, while the fold line 2 is lower than the first seam 4. Because the first seam 4 is higher, the Z-fold portion of the airbag 1 will have a certain inflation area (i.e., the inflation area of ​​the first chamber 6 is above the fold line 2). When the airbag 1 is inflated and unfolded, this inflation area (i.e., the inflation area above the fold line 2) will push the first chamber 6 into the vehicle at a certain angle before unfolding. The second chamber 7, which has no inflation area, is above the fold line 2 and will therefore unfold vertically downwards. This allows control over the unfolding posture of the first chamber 6 and the second chamber 7 of the airbag 1, ultimately meeting the development needs of different projects.

[0036] It should be noted that by using different folding positions of the first chamber 6 and the second chamber 7, it is relatively easy to achieve that the first chamber 6 and the second chamber 7 of the air bag 1 can be unfolded in different directions.

[0037] It should also be noted that since the air bag 1 is generally formed by sewing two pieces of fabric together to create a cavity, and glue is usually applied to the edges of the two pieces of fabric before sewing to stick them together and make sewing easier, the glue application trajectory of the first chamber 6 and the second chamber 7 can be modified to create a height difference between the glue application in the first chamber 6 and the second chamber 7, with the sewing position at the center of the glue application, thus creating a height difference between the sewing lines in the first chamber 6 and the second chamber 7.

[0038] like Figure 1 As shown, in some embodiments, the first suture 4 and the fold line 2 are parallel to each other, and the second suture 5 and the fold line 2 are parallel to each other or coincident. The first suture 4 and the fold line 2 are arranged parallel to each other so that the distance from any point of the first suture 4 to the fold line 2 is the same, thereby ensuring the smooth unfolding of the first chamber 6. The fold line 2 coincides with the second suture 5 or is located above the second suture 5 to ensure that the second chamber 7 unfolds in the vertical direction.

[0039] It should be noted that the unfolding direction of the air bag 1 is related to the distance between the fold line 2 and the seam. By changing the position of the fold line 2, the distance between the fold line 2 and the first seam 4 can be changed, thereby achieving different tilt angles after the first chamber 6 is unfolded.

[0040] like Figures 1-5As shown, in some embodiments, the distance between the first seam 4 and the fold line 2 is 1mm to 20mm. By changing the position of the fold line 2, the distance between the fold line 2 and the first seam 4 is satisfied to be between 1mm and 20mm. The tilt angle of the first chamber 6 towards the vehicle is between 10° and 40°, ensuring the protection effect for the occupants without affecting them.

[0041] It should be noted that the distance between the fold line 2 and the first seam 4 can be selected according to the actual situation, as long as the tilt angle of the airbag 1 can achieve good protection for the occupants.

[0042] like Figure 1 and Figure 4 As shown, in some embodiments, the distance between the first seam 4 and the fold line 2 is 10mm, and the tilt angle of the first chamber 6 towards the car interior after unfolding is 20° to 30°. When the distance between the fold line 2 and the first seam 4 is 10mm, in this case, the first chamber 6 unfolds slightly towards the car interior after unfolding, and the second chamber 7 unfolds vertically downwards. The angle between the first chamber 6 and the second chamber 7 is 20° to 30°.

[0043] like Figure 1 and Figure 5 As shown, in some embodiments, the distance between the first seam 4 and the fold line 2 is 20mm, and the tilt angle of the first chamber 6 towards the car interior after unfolding is 30° to 40°. When the distance between the fold line 2 and the first seam 4 is 20mm, in this case, the first chamber 6 unfolds significantly towards the car interior, and the second chamber 7 unfolds vertically downwards. The angle between the first chamber 6 and the second chamber 7 is 30° to 40°.

[0044] like Figure 1 As shown, in some embodiments, along the length of the vehicle body, the first chamber 6 is the front chamber and the second chamber 7 is the rear chamber. The first chamber 6 is configured as the front chamber and the second chamber 7 is configured as the rear chamber. When the airbag 1 is inflated and deployed, the front chamber tilts at a certain angle toward the inside of the vehicle, and the rear chamber deploys vertically downward. Since occupants generally lean forward when a vehicle collides, the deployment of the front chamber toward the inside of the vehicle can ensure the protective effect on the occupants.

[0045] In some other embodiments, along the length of the vehicle body, the first chamber 6 is the rear chamber and the second chamber 7 is the front chamber. Alternatively, the first chamber 6 can be set as the rear chamber and the second chamber 7 as the front chamber. When the airbag 1 is inflated and deployed, the rear chamber tilts at a certain angle toward the inside of the vehicle, and the front chamber deploys vertically downwards, ensuring effective protection for the occupants.

[0046] like Figures 1-5 As shown, in some embodiments, the airbag includes a side airbag. Since the side airbag is located on the side of the occupant when it is deployed, the first chamber 6 can be set to tilt towards the inside of the vehicle after deployment to avoid the first chamber 6 from floating outward due to force, so as to ensure the protective effect on the occupant.

[0047] like Figures 1-5 As shown, in some embodiments, the side airbag includes a curtain airbag, a seat side airbag, or a distal side airbag. This side airbag can be applied to any type of airbag in a car that provides side protection for occupants, such as a curtain airbag, a seat side airbag, or a distal side airbag. When applied to a curtain airbag, because the curtain airbag is relatively long, it can achieve the effect of the front and rear chambers opening in different directions and opening in different states when the curtain airbag is deployed, thereby providing better protection for the driver and occupants. When applied to a seat side airbag or a distal side airbag, it is basically similar to the curtain airbag, and both can achieve the effect of the front and rear chambers opening in different directions, thereby ensuring the protective effect for occupants.

[0048] The various embodiments in this specification can be referred to interchangeably for the same or similar parts. Each embodiment focuses on describing the differences from other embodiments. In particular, the method embodiments described later are relatively simple in description since they correspond to the system, and relevant parts can be referred to the descriptions in the system embodiments.

[0049] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An automotive airbag device, comprising an airbag and a gas generator, wherein the airbag has an mounting port that mates with the gas generator, and the airbag is folded along a fold line, characterized in that, The air bag includes a first chamber and a second chamber respectively disposed on both sides of the installation port. A first seam is provided at the top edge of the first chamber, and a second seam is provided at the top edge of the second chamber. Wherein, the horizontal plane of the first seam is higher than the horizontal plane of the second seam, the fold line is not lower than the second seam and the fold line is lower than the first seam, and the inflation area of ​​the first chamber is at least partially above the fold line, so that when the air bag is inflated and unfolded, the first chamber tilts toward the direction closer to the car interior.

2. The automotive airbag device according to claim 1, characterized in that, The first suture and the fold line are parallel to each other, and the second suture and the fold line are parallel to each other or overlap.

3. The automotive airbag device according to claim 2, characterized in that, The distance between the first suture and the fold line is 1mm to 20mm.

4. The automotive airbag device according to claim 3, characterized in that, The distance between the first seam and the fold line is 10mm, and the tilt angle of the first chamber towards the inside of the car after it is unfolded is 20° to 30°.

5. The automotive airbag device according to claim 3, characterized in that, The distance between the first seam and the fold line is 20mm, and the tilt angle of the first chamber towards the inside of the car after it is unfolded is 30° to 40°.

6. The automotive airbag device according to claim 1, characterized in that, Along the length of the vehicle body, the first chamber is the front chamber, and the second chamber is the rear chamber.

7. The automotive airbag device according to claim 1, characterized in that, Along the length of the vehicle body, the first chamber is the rear chamber, and the second chamber is the front chamber.

8. The automotive airbag device according to any one of claims 1-7, characterized in that, The airbag includes side airbags.

9. The automotive airbag device according to claim 8, characterized in that, The side airbags include curtain airbags, seat side airbags, or distal side airbags.

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