Airbag and vehicle

Abstract

The utility model relates to a kind of safety air bag and vehicle, safety air bag includes gas generator, air bag and shell, gas generator and the air bag in folded state are all installed in shell, air bag includes neck and main part, gas generator is connected with the neck of air bag, gas generator is used to inflate from the neck of air bag to air bag after being triggered, to make air bag eject from shell and from folded state deploy to completely unfolded state;Air bag is configured: when being in completely unfolded state, a containing space is formed between the neck of air bag and main part, containing space passes through air bag in first direction, first direction is horizontal direction with the ejecting direction of air bag transverse;And in the deployment process, main part is set to be able to cross an imaginary line, imaginary line extends in first direction on preset height in containing space;At least one secondary bleed hole is opened on the neck of air bag, and at least one main bleed hole is opened on the main part of air bag.

Description

Technical Field

[0001] This utility model relates to the field of automotive passive safety devices, and more specifically to an airbag and a vehicle. Background Technology

[0002] Airbags are a key passive safety device in automobiles and other vehicles. Their core function is to rapidly inflate and form a cushioning airbag when a collision occurs, reducing secondary impact injuries to occupants from hard objects inside the vehicle (such as the steering wheel, dashboard, and windshield), thereby reducing the risk of fatal injuries.

[0003] With the rapid development of automotive intelligence and electrification, more and more intelligent components (such as large displays on the dashboard) are being installed in cars. These components occupy the space of airbags, and when the airbags deploy, these components become obstacles, hindering their deployment and preventing them from protecting the occupants. Therefore, how to enable airbags to successfully deploy over obstacles to protect occupants is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] The purpose of this invention is to provide a safety airbag and vehicle that can cross obstacles and deploy smoothly during deployment, thereby protecting the occupants.

[0005] To achieve the above objectives, this utility model provides an airbag, including a gas generator, an air bag, and a housing. The gas generator and the air bag in a folded state are both installed inside the housing. The air bag includes a neck and a main body. The gas generator is connected to the neck of the air bag. The gas generator is used to inflate the air bag from the neck after being triggered, so that the air bag is ejected from the housing and unfolded from a folded state to a fully unfolded state.

[0006] The airbag is configured such that, when fully deployed, a receiving space is formed between the neck of the airbag and the main body, the receiving space passing through the airbag in a first direction, the first direction being a horizontal direction transverse to the ejection direction of the airbag; and during deployment, the main body is configured to be able to cross an imaginary line, the imaginary line extending at a preset height along the first direction in the receiving space.

[0007] The air bag has at least one secondary vent hole on its neck and at least one main vent hole on its main body.

[0008] Optionally, during the process of the airbag unfolding from the folded state to the fully unfolded state, it sequentially passes through an initial unfolding state and an intermediate unfolding state;

[0009] The containment space is used to contain obstacles. In the initial deployment state, the airbag as a whole is farther away from the occupant than the obstacle; in the intermediate deployment state, at least a portion of the main body is closer to the occupant than the obstacle.

[0010] Optionally, the secondary vent is configured to be exposed during the process of the air bag unfolding from the folded state to the initial unfolding state, and the main vent is configured to be exposed when the air bag unfolds to the intermediate unfolding state.

[0011] Optionally, the sum of the dimensions of all secondary vent holes is set to be less than or equal to the sum of the dimensions of all primary vent holes.

[0012] Optionally, the sum of the sizes of all secondary vent holes is set to be greater than or equal to a first size threshold and less than or equal to a second size threshold, the first size threshold being defined by a first internal pressure threshold, the second size threshold being defined by a second internal pressure threshold, and the highest internal pressure of the air bag during the deployment process being greater than or equal to the second internal pressure threshold and less than or equal to the first internal pressure threshold.

[0013] Optionally, the sum of the dimensions of all secondary vents and all main vents is equal to a third size threshold, which is defined by an internal pressure preset value, which is the internal pressure value when the air bag is in a fully deployed state.

[0014] Optionally, in the fully deployed state, the neck and the main body are separated by a dividing surface, which is a surface that passes through the highest point of the obstacle and is parallel to the Z-direction of the vehicle coordinate system, and the neck is further away from the occupant than the main body.

[0015] Optionally, the air bag includes a main piece, a first side piece, and a second side piece. The main piece is connected end to end to form a ring structure. The first side piece and the second side piece are respectively fixed on both sides of the ring structure to form a closed air bag. The secondary vent and the main vent are provided on the first side piece and / or the second side piece.

[0016] Optionally, the main plate is provided with an inflation port, and the gas generator is connected to the inflation port, through which the gas generator inflates the air bag.

[0017] Optionally, there are two secondary vent holes and two main vent holes, with one secondary vent hole and one main vent hole located on the first side plate, and the other secondary vent hole and the other main vent hole located on the second side plate.

[0018] Optionally, the size of the main vent is larger than the size of the secondary vent.

[0019] In another aspect, this utility model provides a vehicle that includes the airbag described above.

[0020] In the initial stage of airbag deployment, the secondary vent hole is exposed to release air and prevent the airbag from rupturing due to excessive internal pressure. After the airbag crosses an obstacle, the main vent hole is exposed to increase the amount of air released, thereby reducing the internal pressure of the airbag to a suitable value. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the airbag according to an embodiment of the present invention when it has not deployed;

[0022] Figure 2 This is a schematic diagram of the structure of the airbag after it has fully deployed according to an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the airbag in the initial stage of deployment after detonation according to an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the airbag during its mid-deployment after detonation, according to an embodiment of the present invention.

[0025] Figure 5 A graph showing the change of internal pressure of the airbag over time after the airbag is deployed according to an embodiment of the present invention.

[0026] Figure 6 This is a schematic diagram of the structure of an air bag according to an embodiment of the present utility model. Detailed Implementation

[0027] The preferred embodiments of this utility model are given below with reference to the accompanying drawings and described in detail.

[0028] like Figure 1 and Figure 2 As shown, this embodiment of the utility model provides an airbag, which includes a gas generator 100, an air bag 200, and a shell 600. The air bag 200 has a folded state (e.g., Figure 1 (as shown) and fully unfolded state (as shown) Figure 2As shown, the gas generator 100 and the folded airbag 200 are both installed inside the housing 600. The airbag 200 includes a neck 200a and a main body 200b, and the gas generator 100 is connected to the neck 200a. When the vehicle does not collide, the gas generator 100 is not triggered, and the housing 600 can keep the airbag 200 in a folded state. The gas generator 100 and the airbag 200 can be hidden inside the housing 600 for an aesthetic effect. When the vehicle collides, the gas generator 100 is triggered and inflates the airbag 200 from the neck 200a, so that the airbag 200 pops out of the housing 600 and unfolds from the folded state to the fully unfolded state. When fully deployed, a receiving space 700 is formed between the neck 200a and the main body 200b of the airbag 200. This receiving space 700 extends through the airbag 200 in a first direction, which is a horizontal direction transverse to the ejection direction of the airbag. During deployment, the main body 200b can cross an imaginary line that extends at a preset height along the first direction within the receiving space 700. The neck 200a of the airbag 200 is provided with at least one secondary vent 210, and the main body 200b of the airbag 200 is provided with at least one main vent 220.

[0029] The accommodating space 700 is used to accommodate the obstacle 400. The aforementioned imaginary line is the intersection line between the obstacle 400 and the airbag 200. The purpose of constructing the airbag 200 in this way is to ensure that, during deployment, the airbag 200 can cross the obstacle 400 and be positioned in front of the occupant, thereby protecting the occupant after a vehicle collision and preventing the obstacle 400 from interfering with the deployment of the airbag 200 and causing it to lose its protective function. The obstacle 400 may occupy a portion of the length of the accommodating space 700 in the first direction, or it may extend through the entire accommodating space 700 along the first direction.

[0030] For example, the housing 600 is fixed to the dashboard 300, for example, installed in a mounting slot of the dashboard 300, to be hidden before a vehicle collision; the obstacle 400 is also fixed to the dashboard 300, and the obstacle 400 can be a display screen. The housing 600 is positioned further away from the occupant than the obstacle 400 (from the occupant's perspective, the gas generator 100 and the airbag 200 are located behind the obstacle 400); after a vehicle collision, the airbag 200 is inflated and deployed. During deployment, the main body 200b of the airbag 200 passes over the obstacle 400 and is positioned between the obstacle 400 and the occupant. When fully deployed, the main body 200b covers the obstacle 400, preventing the occupant from contacting the obstacle 400, thereby providing protection.

[0031] During the deployment process, the airbag 200 will also pass through the following... Figure 3 The initial unfolding state shown and as Figure 4 The diagram shows the intermediate deployment state, where, after the airbag 200 is inflated, it unfolds from a folded state to an initial deployment state, then from an initial deployment state to an intermediate deployment state, and finally from an intermediate deployment state to a fully deployed state. Figure 3 As shown, in the initial deployment state, from the occupant's perspective, the airbag 200 is located entirely behind the obstacle 400, meaning the airbag 200 has not yet crossed the obstacle 400. At this time, the airbag 200 is located within the space formed by the dashboard 300, the obstacle 400, and the windshield 500; Figure 4 As shown, in the mid-deployment state, from the occupant's perspective, at least a portion of the main body 200b of the airbag 200 is located in front of the obstacle 400, meaning the airbag 200 has crossed the obstacle 400; as Figure 2 As shown, when fully deployed, from the occupant's perspective, the main body 200b of the airbag 200 is in front of the obstacle 400 and covers the obstacle 400. At this time, inflation is complete, the airbag 200 is fully deployed and maintains a certain rigidity and shape, and the main body 200b will support the occupant to provide collision protection.

[0032] In the initial deployment phase, to ensure the airbag 200 can successfully cross the obstacle 400, sufficient pressure must be maintained within the airbag 200 in its initial deployment state to propel it across. However, if the pressure in the airbag 200 is too high and exceeds its pressure-bearing capacity, it will rupture. A ruptured airbag 200 will prevent deployment and lose its protective function for the occupants. To solve this problem, the secondary vent 210 can be positioned to be exposed during the initial deployment of the airbag 200 from its folded state. This allows some gas to escape through the secondary vent 210 during the initial deployment phase, reducing the internal pressure and preventing rupture.

[0033] When the airbag 200 reaches the mid-deployment state, it has already crossed the obstacle 400. At this point, the pressure inside the airbag 200 does not need to be too high. If the pressure inside the airbag 200 is too high, it will cause the airbag 200 to be too rigid in the fully deployed state. If the occupant collides with it, it will cause injury. Therefore, it is necessary to ensure that the pressure inside the airbag 200 in the fully deployed state is not too high. This allows the internal pressure of the airbag 200 to gradually decrease from the mid-deployment state to the fully deployed state and reach the preset internal pressure value. Under the internal pressure of the preset internal pressure value, the airbag 200 can maintain a certain rigidity and shape, and provide support and protection for the occupant. Therefore, the main vent 220 can be set to be exposed when the airbag 200 reaches the mid-deployment state, and covered before the airbag 200 reaches the mid-deployment state. That is, the main vent 220 is not exposed when the airbag 200 has not crossed the obstacle 400, and is exposed after the airbag 200 crosses the obstacle 400. Thus, the main vent 220 only releases air after the airbag 200 crosses the obstacle 400, and does not release air before the airbag 200 crosses the obstacle 400. In this way, on the one hand, the internal pressure of the airbag 200 before crossing the obstacle 400 can be guaranteed, so that it can cross the obstacle 400 smoothly. On the other hand, after the airbag 200 crosses the obstacle 400, its internal pressure can be reduced by the auxiliary vent 210 and the main vent 220, so as to avoid excessive internal pressure of the airbag 200 when it is fully deployed.

[0034] Therefore, through the aforementioned secondary vent 210 and main vent 220, in the initial stage of deployment, the airbag 200 depresses only through the secondary vent 210. After reaching the middle stage of deployment, the airbag 200 depresses simultaneously through both the secondary vent 210 and the main vent 220. This ensures that the internal pressure of the airbag 200 in the initial stage of deployment meets the requirements for crossing the obstacle 400 without causing the airbag 200 to rupture. It also allows the internal pressure of the airbag 200 to decrease rapidly after crossing the obstacle 400, so that the internal pressure of the airbag 200 in the fully deployed state reaches the preset internal pressure value, thereby achieving the effect of protecting the occupants.

[0035] like Figure 5 The graph shown shows the change in internal pressure of airbag 200 over time after airbag deployment. When a vehicle collision occurs, the gas generator 100 is triggered and generates enough gas in a short time (milliseconds) to inflate airbag 200, causing it to unfold from a folded state to a fully unfolded state. During this process, it goes through an initial unfolding state and a mid-term unfolding state. In the initial unfolding state, the internal pressure of airbag 200 increases from 0 to its maximum value so that airbag 200 can cross obstacle 400. In the mid-term unfolding state, after airbag 200 crosses obstacle 400, the main vent 220 is exposed, and the secondary vent 210 and the main vent 220 release air together, causing the internal pressure of airbag 200 to gradually decrease and reach the preset internal pressure value after full unfolding. Figure 5The document also shows a first internal pressure threshold and a second internal pressure threshold. The first internal pressure threshold is the maximum internal pressure value that the air bag 200 can withstand, and the second internal pressure threshold is the minimum internal pressure value that allows the air bag 200 to cross the obstacle 400. The maximum internal pressure of the air bag 200 at the initial stage of deployment must be greater than or equal to the second internal pressure threshold and less than or equal to the first internal pressure threshold, i.e., between the two.

[0036] The magnitudes of the first internal pressure threshold, the second internal pressure threshold, and the preset internal pressure value are related to various factors such as the gas generation of the gas generator 100, the size of the gas bag 200, and the size of the secondary vent 210 and the main vent 220 on the gas bag 200. The first internal pressure threshold, the second internal pressure threshold, and the preset internal pressure value can be obtained through experience, simulation, or any other suitable means. After obtaining the first internal pressure threshold, the second internal pressure threshold, and the preset internal pressure value, the first size threshold, the second size threshold, and the third size threshold can be determined. The first size threshold is the minimum value of the sum of the sizes of all secondary vent holes 210 (if it is less than this value, the maximum internal pressure of the air bag 200 will exceed the first internal pressure threshold). The second size threshold is the maximum value of the sum of the sizes of all secondary vent holes 210 (if it is greater than this value, the maximum internal pressure of the air bag 200 will be less than the second internal pressure threshold). The sum of the sizes of all secondary vent holes 210 is set to be greater than or equal to the first size threshold and less than or equal to the second size threshold. That is, when the sum of the sizes of all secondary vent holes 210 is between the first size threshold and the second size threshold, the maximum pressure of the air bag 200 at the initial stage of deployment will be between the first internal pressure threshold and the second internal pressure threshold. The sum of the dimensions of all secondary vent holes 210 and all main vent holes 220 is set to equal the third size threshold. That is, when the air bag 200 has vent holes of the third size threshold, the internal pressure of the air bag 200 can reach the preset internal pressure value after it is fully deployed.

[0037] In some embodiments, the sum of the dimensions of all secondary vent holes 210 is set to be less than or equal to the sum of the dimensions of all main vent holes 220. The purpose of this is to ensure that the amount of air released from the airbag 200 is not too large at the initial stage of deployment, thereby ensuring that the airbag 200 has internal pressure to cross the obstacle 400. After crossing the obstacle 400, the amount of air released from the airbag 200 increases, thereby allowing the internal pressure of the airbag 200 to quickly decrease to the preset internal pressure value.

[0038] Figures 1 to 4 All are projections in the vehicle coordinate system on a plane parallel to the XOZ plane (i.e., projections along the Y direction). Figures 2 to 4 The dashed arrows in the diagram represent airflow. Figure 2 In the diagram, point A is the highest point of obstacle 400 in the Z direction, and point B is the center point of the upper plane of gas generator 100. A straight line L is drawn through point A along the Z direction. This line L is the dividing line between the neck 200a and the main body 200b of the fully deployed airbag 200. The neck 200a is... Figure 2The left side of straight line L1 (i.e., the part away from the occupants), the main body 200b is Figure 2 The right side of straight line L (i.e., the part closest to the occupants). Align the secondary vent 210 with point B at... Figure 2 The segments are connected to form line segment L2. The intersection of L2 and the projected outline of the upper surface of the instrument panel 300 is C. To ensure that the secondary vent 210 can be exposed in the initial stage of air bag 200 deployment, the length of line segment L2 needs to be greater than the length of line segment BC.

[0039] Understandable Figure 2 Since this is a projection diagram, the above description is for the projection diagram. In reality, the airbag 200 is a three-dimensional structure. The straight line L1 mentioned above is actually a projection of a plane (i.e., a dividing plane) parallel to the Z direction. The fully deployed airbag 200 is divided into a neck 200a and a main body 200b by this dividing plane.

[0040] When the airbag 200 is in the folded state, it can be folded in a preset folding method so that during the inflation and unfolding process, the secondary vent 210 of the airbag 200 will be exposed first, and the main vent 220 will be exposed after the airbag 200 crosses the obstacle 400, so that the airbag 200 can cross the obstacle and unfold smoothly. The specific folding method of the airbag 200 is existing technology and will not be described in detail here.

[0041] like Figure 6 As shown, the airbag 200 includes a main piece 230, a first side piece 240, and a second side piece 250. The main piece 230 is connected end to end to form a ring structure. The first side piece 240 and the second side piece 250 are respectively fixed to both sides of the ring structure to form a closed airbag structure. After the airbag 200 is deployed, part of the ring structure of the main piece 230 abuts against the obstacle 400, part abuts against the windshield 500, part abuts against the dashboard 300, and part crosses the obstacle 400 and is located in front of the occupant to support the occupant and provide collision protection. The dashboard 300, the obstacle 400, and the windshield 500 can support the main piece 230 of the airbag 200 to maintain the shape of the airbag 200. The secondary vent 210 and the main vent 220 are provided on the first side piece 240 and / or the second side piece 250.

[0042] For example, there are two secondary vent holes 210 and two main vent holes 220. One secondary vent hole 210 and one main vent hole 220 are disposed on the first side plate 240, and the other secondary vent hole 210 and the other main vent hole 220 are disposed on the second side plate 250. The size of the secondary vent hole 210 can be set to be smaller than the size of the main vent hole 220.

[0043] In this invention, the size of the vent hole refers to the area of ​​the surface that is removed from the air bag 200. For example, if the vent hole is circular, its size is πr. 2 , where r is the radius of the vent hole.

[0044] An inflation port 231 can also be provided on the main plate 230. The gas generator 100 is connected to this inflation port 231. The gas generated by the gas generator 100 enters the inner cavity of the air bag 200 through the inflation port 231, thereby inflating the air bag 200. After the gas generator 100 is connected to the inflation port 231, it can be fixed to the instrument panel 300. The projection position of the inflation port 231 along the Y direction is... Figure 2 Point B in the diagram.

[0045] The main piece 230 can be joined end to end by sewing, heat fusion, or any other suitable means. The main piece 230 and the first side piece 240, as well as the main piece 230 and the second side piece 250, can be secured together by sewing, snaps, or any other suitable means.

[0046] In the initial stage of deployment of the airbag 200, the secondary vent 210 is exposed to release air, so as to avoid excessive internal pressure and rupture of the airbag 200. After the airbag 200 crosses the obstacle 400, the main vent 220 is exposed to increase the amount of air released, thereby reducing the internal pressure of the airbag 200 to a suitable value.

[0047] This utility model can also provide a vehicle that includes the airbag described above.

[0048] It should be noted that the present invention (e.g., inventive concepts, etc.) has been described in the specification and / or illustrated in the figures of this patent document according to exemplary embodiments; the embodiments of the present invention are presented by way of example only and are not intended to limit the scope of the present 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 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, device, form, assembly, construction, means, function, system, process / method, steps, sequence of process / method steps, operation, operating conditions, performance, materials, composition, combination, etc.) without departing from the scope of this utility model; all such subject matter (e.g., modifications, variations, embodiments, combinations, equivalents, etc.) is intended to be included within the scope of this utility model. The scope of this utility model is not intended to be limited to the subject matter (e.g., details, structure, function, materials, behavior, steps, sequence, system, result, etc.) described in the specification and / or figures of this patent document. Considering that the claims of this patent document will be properly interpreted to cover the full scope of the subject matter of this utility model (e.g., including any and all such modifications, variations, embodiments, combinations, equivalents, etc.), it should be understood that the terminology used in this patent document is for the purpose of providing a description of the subject matter of exemplary embodiments and not as a limitation on the scope of this utility model.

[0049] 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. An airbag, characterized in that, The device includes a gas generator, an air bag, and a housing. The gas generator and the air bag in a folded state are both installed inside the housing. The air bag includes a neck and a main body. The gas generator is connected to the neck of the air bag. The gas generator is used to inflate the air bag from the neck after being triggered, so that the air bag is ejected from the housing and unfolded from a folded state to a fully unfolded state. The airbag is configured such that, when fully deployed, a receiving space is formed between the neck of the airbag and the main body, the receiving space passing through the airbag in a first direction, the first direction being a horizontal direction transverse to the ejection direction of the airbag; and during deployment, the main body is configured to be able to cross an imaginary line, the imaginary line extending at a preset height along the first direction in the receiving space. The air bag has at least one secondary vent hole on its neck and at least one main vent hole on its main body.

2. The airbag according to claim 1, characterized in that, During the process of the airbag unfolding from the folded state to the fully unfolded state, it successively goes through an initial unfolded state and a mid-term unfolded state. The containment space is used to contain obstacles, and in the initial deployment state, the airbag as a whole is further away from the occupants than the obstacles; In the intermediate deployment state, at least a portion of the main body is closer to the occupants than the obstacle.

3. The airbag according to claim 2, characterized in that, The secondary vent is configured to be exposed during the process of the air bag unfolding from the folded state to the initial unfolding state, and the main vent is configured to be exposed when the air bag unfolds to the intermediate unfolding state.

4. The airbag according to claim 1, characterized in that, The sum of the dimensions of all secondary vent holes is set to be less than or equal to the sum of the dimensions of all primary vent holes.

5. The airbag according to claim 4, characterized in that, The sum of the dimensions of all secondary vent holes is set to be greater than or equal to a first size threshold and less than or equal to a second size threshold, the first size threshold being defined by a first internal pressure threshold, the second size threshold being defined by a second internal pressure threshold, and the highest internal pressure of the air bag during the deployment process being greater than or equal to the second internal pressure threshold and less than or equal to the first internal pressure threshold.

6. The airbag according to claim 4, characterized in that, The sum of the dimensions of all secondary vents and all main vents is equal to a third size threshold, which is defined by an internal pressure preset value, which is the internal pressure value when the air bag is in a fully deployed state.

7. The airbag according to claim 2, characterized in that, In the fully deployed state, the neck and the main body are separated by a dividing surface, which is a surface that passes through the highest point of the obstacle and is parallel to the Z-direction of the vehicle coordinate system. The neck is further away from the occupant than the main body.

8. The airbag according to claim 1, characterized in that, The air bag includes a main piece, a first side piece, and a second side piece. The main piece is connected end to end to form a ring structure. The first side piece and the second side piece are respectively fixed on both sides of the ring structure to form a closed air bag. The secondary vent and the main vent are provided on the first side piece and / or the second side piece.

9. The airbag according to claim 8, characterized in that, The main plate is provided with an inflation port, and the gas generator is connected to the inflation port. The gas generator inflates the air bag through the inflation port.

10. The airbag according to claim 8, characterized in that, There are two secondary vent holes and two main vent holes. One secondary vent hole and one main vent hole are located on the first side plate, and the other secondary vent hole and the other main vent hole are located on the second side plate.

11. The airbag according to claim 10, characterized in that, The size of the main vent is larger than the size of the secondary vent.

12. A vehicle, characterized in that, Including the airbag as described in any one of claims 1-11.

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