Safety air bag and vehicle

Abstract

The utility model relates to a safety air bag and a vehicle, the safety air bag comprises an air bag main body, the air bag main body comprises a protective air cavity and an adjusting air cavity, and a first flow limiting structure used for communicating the protective air cavity with the adjusting air cavity is arranged between the protective air cavity and the adjusting air cavity; the first flow limiting structure is configured to limit the flow speed of air entering the adjusting air cavity when the air bag body is inflated, so that the protective air cavity is filled with the air before the adjusting air cavity is filled with the air. Therefore, when a vehicle is collided, gas preferentially enters the protective gas cavity to be inflated and slowly enters the adjusting gas cavity from the protective gas cavity, so that the gas can preferentially enter the protective gas cavity for protecting people in the vehicle, the part of the protective gas cavity in the safety air bag can respond quickly, the effective inflation time of the safety air bag is shortened, and the safety of the vehicle is improved. And the safety of passengers in the automobile is more effectively protected.

Description

Technical Field

[0001] The present disclosure relates to the technical field of airbags, and in particular, to an airbag and a vehicle. Background Art

[0002] The automobile airbag is a safety device in the automobile passive safety restraint system. It can be instantly detonated when a collision occurs in the automobile, thereby protecting the safety of the people in the car. The airbag, which is an important component of the automobile airbag, is filled with gas when the airbag is detonated, separating the people in the car from the side of the car, thereby protecting the safety of the people in the car. The length of time required for the airbag to deploy is very critical to the protection effect. Under normal circumstances of vehicle body collision and intrusion, deployment within the standard time is protective. However, in the related technology, there is a problem of slow airbag deployment time. Utility Model Content

[0003] The object of the present disclosure is to provide an airbag and a vehicle, in which the portion protecting the air cavity of the airbag can respond quickly, so as to at least partially solve the above technical problems.

[0004] In order to achieve the above-mentioned objectives, the first aspect of the present disclosure provides a safety airbag, comprising: an airbag body, the airbag body comprising a protective air cavity and a regulating air cavity, a first flow limiting structure for connecting the protective air cavity and the regulating air cavity is provided between the protective air cavity and the regulating air cavity, the first flow limiting structure is configured to limit the flow rate of gas entering the regulating air cavity when the airbag body is inflated, so that the protective air cavity is filled with gas before the regulating air cavity.

[0005] Optionally, the first flow-limiting structure comprises a damping channel, and the damping channel is configured to limit the flow rate of the gas in the protective gas cavity entering the regulating gas cavity, so that the protective gas cavity is filled with gas before the regulating gas cavity.

[0006] Optionally, the first flow limiting structure includes a connecting channel and a flow limiting member arranged in the connecting channel, and the flow limiting member is used to limit the flow rate of the gas in the protective gas cavity entering the regulating gas cavity.

[0007] Optionally, the flow limiting member includes a first suture and / or a first buffer glue, and the flow limiting member is configured to release the restriction when the pressure value of the gas entering the protective gas cavity reaches a preset value.

[0008] Optionally, a second flow-limiting structure is provided in the regulating air cavity, and the second flow-limiting structure is configured to limit the initial inflation volume of the regulating air cavity so that the regulating air cavity is slowly inflated and expanded.

[0009] Optionally, the second flow limiting structure includes a second suture and / or a second buffer glue, and the second flow limiting structure is configured to release the restriction when the pressure value of the gas entering the protective gas cavity reaches a preset value.

[0010] Optionally, the inflation volume of the protection air cavity is greater than the inflation volume of the regulating air cavity.

[0011] Optionally, there are multiple regulating air cavities.

[0012] Optionally, the safety airbag includes an air guide bag, which is connected to the protective air cavity and is used to guide gas into the protective air cavity and the regulating air cavity.

[0013] Optionally, the airbag further includes a hook structure fixedly connected to the airbag body, the hook structure being used to install the airbag body on a vehicle; and / or the airbag further includes a drawstring structure fixedly connected to the airbag body, the drawstring structure being configured to install the airbag body on a vehicle and prevent the protective air cavity from being separated from the vehicle when inflated.

[0014] A second aspect of the present disclosure provides a vehicle, comprising the above-mentioned airbag.

[0015] Through the above technical scheme, a protective air cavity and a regulating air cavity are set through the airbag, wherein a first flow limiting structure connecting the protective air cavity and the regulating air cavity is provided between the protective air cavity and the regulating air cavity, and the first flow limiting structure is configured to limit the flow rate of gas entering the regulating air cavity when the airbag body is inflated, so that the protective air cavity is filled with gas before the regulating air cavity, so that when the vehicle collides, the gas can preferentially enter the protective air cavity for inflation, and slowly enter the regulating air cavity from the protective air cavity, so that the gas can preferentially enter the protective air cavity for protecting the people in the vehicle, and the part of the protective air cavity in the airbag can respond quickly, thereby shortening the effective inflation time of the airbag and more effectively protecting the safety of the people in the vehicle.

[0016] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0018] Figure 1 is a schematic diagram of the front structure of an airbag provided in an exemplary embodiment of the present disclosure;

[0019] Figure 2 is a partially enlarged view of a first regulating air cavity provided in an exemplary embodiment of the present disclosure;

[0020] Figure 3 is a partially enlarged view of a second regulating air cavity provided in an exemplary embodiment of the present disclosure.

[0021] Description of Reference Numerals

[0022] 1-airbag body; 11-protective air cavity; 12-adjusting air cavity; 121-first adjusting air cavity; 122-second adjusting air cavity; 13-connecting channel; 131-first connecting channel; 132-second connecting channel; 2-first flow limiting structure; 21-damping channel; 22-connecting channel; 23-flow limiting member; 231-first suture; 3-second flow limiting structure; 31-second buffer rubber; 4-air guide bag; 5-ear hanging structure; 6-drawstring structure; 61-drawstring; 62-drawstring sheet. DETAILED DESCRIPTION

[0023] The specific implementation of the present disclosure is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described herein is only used to illustrate and explain the present disclosure, and is not used to limit the present disclosure.

[0024] In this disclosure, unless otherwise stated, directional words such as "upper" and "lower" generally refer to the use state of the airbag, and "inside" and "outside" refer to the outline of the part itself. In addition, the terms "first", "second", etc. used in this disclosure are to distinguish one element from another element and do not have order and importance. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0025] like Figure 1-Figure 3 As shown, the first aspect of the present disclosure provides a safety airbag, comprising: an airbag body 1, the airbag body 1 comprising a protective air cavity 11 and a regulating air cavity 12, a first flow limiting structure 2 for connecting the protective air cavity 11 and the regulating air cavity 12 is provided between the protective air cavity 11 and the regulating air cavity 12, the first flow limiting structure 2 is configured to limit the flow rate of gas entering the regulating air cavity 12 when the airbag body 1 is inflated, so that the protective air cavity 11 is filled with gas before the regulating air cavity 12.

[0026] Through the above technical solution, the airbag body 1 of the airbag is provided with a protective air cavity 11 and an adjusting air cavity 12, wherein a first flow-limiting structure 2 is provided between the protective air cavity 11 and the adjusting air cavity 12 to connect the protective air cavity 11 and the adjusting air cavity 12, and the first flow-limiting structure 2 is configured to limit the flow rate of gas entering the adjusting air cavity 12 when the airbag body 1 is inflated, so that the protective air cavity 11 is filled with gas before the adjusting air cavity 12, so that when the vehicle collides, the gas first enters the protective air cavity 11 to inflate, and gathers in the protective air cavity 11, and the part of the protective air cavity 11 in the airbag can respond to the expansion quickly, and more effectively protect the safety of the passengers in the vehicle. In addition, the gas in the protective air cavity 11 slowly passes through the first flow-limiting structure 2 from the protective air cavity 11 to the adjusting air cavity 12 to adjust the overall pressure in the airbag body 1, so as to avoid the airbag from being ruptured due to excessive pressure.

[0027] It should be noted that the airbags mentioned in the present disclosure can be selected in shape according to the usage scenario. For example, the airbags can be driver airbags, passenger airbags, front left side airbags, rear seat side airbags, side air curtains or knee airbags. The airbags mentioned in the present disclosure can be side air curtains. For details, please refer to Figure 1 As shown, specifically, the protective air cavity 11, the regulating air cavity 12 and the first flow limiting structure 2 in the airbag can be integrally formed, and the gas first enters the protective air cavity 11 and enters the regulating air cavity 12 through the first flow limiting structure 2. By preferentially entering the protective air cavity 11, the airbag can respond quickly and effectively protect the safety of the passengers in the vehicle.

[0028] It can be understood that the above-mentioned protection air cavity 11, regulating air cavity 12 and the first flow limiting structure 2 in the airbag can be integrally formed for schematic purposes. In other embodiments, the protection air cavity 11, regulating air cavity 12 and the first flow limiting structure 2 can be separately arranged, and one end of the first flow limiting structure 2 is sealed and fixedly connected to the protection air cavity 11, and the other end of the first flow limiting structure 2 is sealed and fixedly connected to the regulating air cavity 12.

[0029] In order to more effectively protect the safety of the passengers in the vehicle, in some feasible ways, the inflation volume of the protective air chamber 11 is greater than the inflation volume of the regulating air chamber 12. The main function of the protective air chamber 11 is to be able to quickly inflate to protect the passengers in the vehicle after a collision, and the main function of the regulating air chamber 12 is to occupy part of the space of the airbag. The first flow limiting structure 2 allows the gas to enter the protective air chamber 11 first, and the protective air chamber 11 has enough area to protect the passengers in the vehicle after inflation. At the same time, the gas slowly enters the regulating air chamber 12 to control the overall pressure of the airbag. It is understandable that the volume of the protective air chamber 11 can be determined according to the specific application scenario to determine its proportion in the airbag, and this is not specifically limited in the present disclosure.

[0030] In order to facilitate the control of the gas in the protective gas cavity 11 entering the regulating gas cavity 12, in some practicable embodiments, the first flow limiting structure 2 includes a damping channel 21, and the damping channel 21 is configured to limit the flow rate of the gas in the protective gas cavity 11 entering the regulating gas cavity 12, so that the protective gas cavity 11 is filled with gas before the regulating gas cavity 12. Figure 1 As shown, the damping channel 21 is a hole with a smaller cross-section. When the gas in the protective air cavity 11 passes through the damping channel 21, the flow rate of the gas will slow down and the flow rate will also decrease due to the existence of the damping channel 21. Therefore, through the setting of the damping channel 21, when the vehicle collides, the gas will preferentially enter the protective air cavity 11 and slowly flow into the regulating air cavity 12, thereby reducing the effective inflation time of the airbag. By preferentially entering the protective air cavity 11, the airbag can respond quickly and effectively protect the safety of the passengers in the vehicle.

[0031] It can be understood that the above-mentioned first flow limiting structure 2 is a schematic structure of the damping channel 21. In other embodiments, the first flow limiting structure 2 includes a connecting channel 22 and a flow limiting member 23 arranged in the connecting channel 22. The flow limiting member 23 is used to limit the flow rate of the gas in the protective air cavity 11 entering the regulating air cavity 12. Therefore, when the gas inflates the airbag body 1, due to the setting of the flow limiting member 23, the flow rate and flow rate of the gas flowing into the regulating air cavity 12 can be limited, so that the gas preferentially enters the protective air cavity 11 to quickly expand the protective air cavity 11 to form an effective protection area to protect the occupants in the vehicle, and the gas slowly enters the regulating air cavity 12 to adjust the overall pressure of the airbag body 1 to avoid damage to the airbag body 1 due to excessive pressure.

[0032] Specifically, the flow limiting member 23 may include a first stitch 231 and / or a first buffer rubber. For example, when the flow limiting member 23 is the first stitch 231, the first stitch 231 may be arranged in the connecting channel 22. The number of the first stitches 231 may be one or more. In the present embodiment, the number of the first stitches 231 is one. The setting of the first stitch 231 can reduce the flow cross-section of the larger connecting channel 22, thereby limiting the flow rate and flow of the gas flowing into the regulating air cavity 12. When the vehicle collides, the airbag is inflated. Due to the setting of the first stitch 231, the flow cross-section of the connecting channel 22 can be smaller, so that the gas is preferentially stored in the protective air cavity 11, thereby reducing the effective inflation time of the airbag. By allowing the gas to preferentially enter the protective air cavity 11, the airbag can respond quickly and effectively protect the safety of the passengers in the vehicle.

[0033] In addition, in order to facilitate the adjustment of the pressure inside the airbag body 1, the first stitch 231 can also be configured so that when the gas in the protective air cavity 11 reaches a preset pressure, the first stitch 231 breaks, thereby increasing the flow cross-section of the connecting channel 22. At this time, the gas in the protective air cavity 11 enters the adjusting air cavity 12 through the connecting channel 22, thereby adjusting the overall pressure inside the airbag body 1, thereby preventing the airbag from rupturing due to excessive pressure, and improving the stability of the airbag.

[0034] Of course, in some feasible embodiments, in order to further reduce the flow cross-section of the connecting channel 22 through the first suture 231, the number of the first suture 231 is one or more. In the present embodiment, the number of the first suture 231 is one. When the flow cross-section of the connecting channel 22 is large, a combination of multiple first sutures 231 can be selected according to the specific working conditions. Of course, the length of the first suture 231 can also be selected according to the working conditions. In order to further reduce the flow cross-section of the connecting channel 22, the first suture 231 extends along the length direction of the connecting channel 22.

[0035] It is understandable that the first flow limiting structure 2 can be a single damping channel 21, or a combination of the damping channel 21 and the connecting channel 22 plus the flow limiting member 23, and the flow volume of the damping channel 21 is smaller than the flow volume of the connecting channel 22. Figure 1 As shown, Figure 1 In the disclosed embodiment, there are two regulating air chambers 12, which are respectively a first regulating air chamber 121 and a second regulating air chamber 122, wherein the second regulating air chamber 122 is connected to the protective air chamber 11 through a damping channel 21, and the first regulating air chamber 121 is connected to the protective air chamber 11 through a connecting channel 22 and a flow limiting member 23 arranged in the connecting channel 22. The setting of the damping channel 21, the connecting channel 22 and the flow limiting member 23 can respectively limit the flow rate and flow rate of the gas entering the corresponding regulating air chamber 12, so that the gas can be preferentially stored in the protective air chamber 11, thereby reducing the effective inflation time of the airbag. The gas preferentially enters the protective air chamber 11, which can make the airbag respond quickly and effectively protect the safety of the passengers in the vehicle. In addition, the different volume settings of the first regulating air chamber 121 and the second regulating air chamber 122 can selectively and quickly inflate the preset position of the protective air chamber 11 according to the working condition of the airbag, reduce the effective inflation time of the airbag, and adapt to more working conditions.

[0036] In some practicable embodiments, there are multiple regulating air cavities 12. It is understandable that the above-mentioned regulating air cavity 12 including the first regulating air cavity 121 and the second regulating air cavity 122 is schematic. In other embodiments, it can also be selected according to specific working conditions. For example, the regulating air cavity 12 can also include a third regulating air cavity and a fourth regulating air cavity. In addition, it is also schematic that the first regulating air cavity 121 and the protective air cavity 11 are connected through a connecting channel 22. The first regulating air cavity 121 and the protective air cavity 11 can also be connected through multiple connecting channels 22, wherein the flow cross-sectional areas of the multiple connecting channels 22 can also be different. In this way, the gas in the protective air cavity 11 can be further controlled to slowly enter the first regulating air cavity 121 through the setting of multiple connecting channels 22.

[0037] In addition, in order to control the gas in the protective air cavity 11 to enter the regulating air cavity 12, in some feasible embodiments, the airbag also includes a second flow limiting structure 3, which is configured to limit the initial inflation volume of the regulating air cavity 12 so that the regulating air cavity 12 can be slowly inflated and expanded. For example, the second flow limiting structure 3 is arranged in the regulating air cavity 12. Specifically, the second flow limiting structure 3 may include a second stitch and / or a second buffer glue 31. For example, the second flow limiting structure 3 may be a second buffer glue 31. The second buffer glue 31 is arranged in the regulating air cavity 12. The setting of the second buffer glue 31 can reduce the initial inflation volume of the regulating air cavity 12, so that the gas can slowly enter the regulating air cavity 12, thereby cooperating with the above-mentioned damping channel 21 and / or the connecting channel 22 including the flow limiting component 23, and can further limit the flow rate and flow rate of the gas entering the regulating air cavity 12. In this way, when the vehicle collides, the gas preferentially enters the protective air cavity 11, thereby reducing the effective inflation time of the airbag. By allowing the gas to preferentially enter the protective air cavity 11, the airbag can respond quickly and effectively protect the safety of the occupants in the vehicle.

[0038] Of course, in order to facilitate the adjustment of the pressure inside the airbag body 1, the second buffer glue 31 can also be configured so that when the gas pressure value entering the protective air cavity 11 reaches a preset value, the second buffer glue 31 fails to allow the inflation volume of the regulating air cavity 12 to be restored, thereby the gas in the protective air cavity 11 flows into the regulating air cavity 12, thereby adjusting the overall pressure inside the airbag body 1, avoiding the airbag from rupturing due to excessive pressure, and improving the stability of the airbag.

[0039] In some practicable embodiments, in order to facilitate the introduction of gas into the airbag, the airbag includes an air guide bag 4, which is connected to the protective air cavity 11 and is used to guide the gas into the protective air cavity 11 and the regulating air cavity 12. It is understandable that the airbag also includes necessary components such as an airbag sensor, an electronic controller and a gas generator. When a vehicle collides during driving, the airbag sensor first receives the impact signal. As long as the specified intensity is reached, the sensor will be activated and send a signal to the electronic controller. After receiving the signal, the electronic controller compares it with the original stored signal. If the airbag deployment condition is met, the drive circuit sends a start signal to the gas generator in the airbag. After receiving the signal, the gas generator ignites the gas generator to generate a large amount of gas, which enters the protective air cavity 11 of the airbag through the air guide bag 4 after being filtered and cooled, so that the airbag breaks through the cushion in a very short time and deploys rapidly, forming an elastic air cushion in front of the driver or passenger, and leaks and shrinks in time to absorb impact energy, thereby effectively protecting the human head and chest from injury or reducing the degree of injury.

[0040] In addition, in order to facilitate the installation of the airbag at different positions of the vehicle, in some practicable ways, the airbag also includes a hook structure 5 fixedly connected to the airbag body 1, and the hook structure 5 may include a plurality of hooks, one end of the hook is fixedly connected to the airbag body 1, and the other end of the hook is fixedly connected to a preset position of the vehicle, so that the airbag can be conveniently installed on the vehicle through the arrangement of the hook structure 5, wherein the number and arrangement of the hooks can be selected according to the specific installation position, and the present disclosure does not make specific restrictions. In addition, the airbag also includes a drawstring structure 6 fixedly connected to the airbag body 1, the drawstring structure 6 includes a drawstring 61 and a drawstring sheet 62, the drawstring 61 is elastic, one end of the drawstring 61 is fixedly connected to the airbag body 1, and the other end of the drawstring 61 is fixedly connected to the drawstring sheet 62, and the drawstring sheet 62 is fixedly connected to a preset position of the vehicle, so that the airbag body 1 can be installed on the vehicle through the drawstring structure 6 and prevent the protective air cavity from being separated from the vehicle when inflated.

[0041] The second aspect of the present disclosure provides a vehicle, comprising the above-mentioned airbag. Through the arrangement of the above-mentioned airbag, when the vehicle collides, a first flow-limiting structure 2 is provided between the protective air cavity 11 and the regulating air cavity 12 to connect the protective air cavity 11 and the regulating air cavity 12. The first flow-limiting structure 2 is configured to limit the flow rate of gas entering the regulating air cavity 12 when the airbag body 1 is inflated, so that the protective air cavity 11 is filled with gas before the regulating air cavity 12, so that when the vehicle collides, the gas first enters the protective air cavity 11 to inflate and gathers in the protective air cavity 11, and the part of the protective air cavity 11 in the airbag can respond to the expansion quickly, and more effectively protect the safety of the passengers in the vehicle.

[0042] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings; however, the present disclosure is not limited to the specific details in the above embodiments. Within the technical concept of the present disclosure, a variety of simple modifications can be made to the technical solution of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0043] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0044] In addition, various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A safety airbag, characterized in that: include: An airbag body, the airbag body comprising a protective air cavity and a regulating air cavity, a first flow limiting structure for connecting the protective air cavity and the regulating air cavity is provided between the protective air cavity and the regulating air cavity, the first flow limiting structure is configured to limit the flow rate of gas entering the regulating air cavity when the airbag body is inflated, so that the protective air cavity is filled with gas before the regulating air cavity.

2. The airbag according to claim 1, characterized in that: The first flow-limiting structure comprises a damping channel, and the damping channel is configured to limit the flow rate of the gas in the protective gas cavity entering the regulating gas cavity, so that the protective gas cavity is filled with gas before the regulating gas cavity.

3. The airbag according to claim 1, characterized in that: The first flow-limiting structure includes a connecting channel and a flow-limiting member arranged in the connecting channel, and the flow-limiting member is used to limit the flow rate of the gas in the protective gas cavity entering the regulating gas cavity.

4. The airbag according to claim 3, characterized in that: The flow limiting member includes a first suture and / or a first buffer glue, and the flow limiting member is configured to release the restriction when the pressure value of the gas entering the protective gas cavity reaches a preset value.

5. The airbag according to any one of claims 1 to 4, characterized in that: A second flow-limiting structure is provided in the regulating air cavity, and the second flow-limiting structure is configured to limit the initial inflation volume of the regulating air cavity so that the regulating air cavity is slowly inflated and expanded.

6. The airbag according to claim 5, characterized in that: The second flow-limiting structure includes a second suture and / or a second buffer glue, and the second flow-limiting structure is configured to release the restriction when the pressure value of the gas entering the protective gas cavity reaches a preset value.

7. The airbag according to claim 1, characterized in that: The inflation volume of the protection air cavity is greater than the inflation volume of the regulating air cavity.

8. The airbag according to claim 1, characterized in that: There are multiple regulating air cavities.

9. The airbag according to claim 1, characterized in that: The safety airbag comprises an air guide bag, which is communicated with the protective air cavity and is used for guiding gas into the protective air cavity and the regulating air cavity.

10. The airbag according to claim 1, characterized in that: The safety airbag further comprises a hanging ear structure fixedly connected to the airbag body, wherein the hanging ear structure is used to install the airbag body on a vehicle; and / or The safety airbag further comprises a drawstring structure fixedly connected to the airbag body, wherein the drawstring structure is configured to install the airbag body on a vehicle and prevent the protective air chamber from being separated from the vehicle when inflated.

11. A vehicle, characterized in that: The invention comprises the safety airbag as claimed in any one of claims 1 to 10.

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