An airbag assembly and vehicle

Abstract

The utility model discloses a safety air bag assembly and vehicle, including casing and safety air bag bag, the casing is used to install on the automobile chassis, be equipped with the accommodation cavity on the casing, the accommodation cavity is used to accommodate safety air bag bag, safety air bag bag can be inflated to the inflation position, at the inflation position, safety air bag bag includes the first extension, second extension and third extension that connect in proper order, the first extension extends from top to bottom and partially appears in the casing below, the second extension forms from the first extension lower end horizontal transverse extension, the third extension forms from the second extension away from the first extension one end upward extension. Safety air bag assembly can set up in the vehicle outside, when the vehicle appears the drop in vertical direction, safety air bag bag can inflate, make the vehicle can realize certain degree's soft landing, and then play the protection function to the vehicle and the passenger.

Description

Technical Field

[0001] This utility model relates to the field of automotive safety technology, and in particular to an airbag assembly and vehicle. Background Technology

[0002] An airbag system is a passive safety protection system that works in conjunction with seat belts to provide effective collision protection for occupants. In a car crash, airbags can reduce the risk of head injuries by about 25% and facial injuries by about 80%.

[0003] These airbag systems are all installed inside the car. However, when the car falls vertically, the airbags inside the system do not deploy, which can easily cause injury to the occupants and the vehicle. For example, in the truck accident that occurred in Cixi City on April 10, 2025, after the truck fell off the overpass, the airbags inside the vehicle did not deploy, and the truck was also severely damaged. Based on this, the applicant proposes a technical solution to install the airbag system outside the car. When the car falls vertically, it can provide a certain degree of soft landing for the vehicle, thereby protecting the occupants and the vehicle. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model proposes a safety airbag assembly that can be installed on the outside of a car and inflates when the car falls, providing a certain degree of soft landing for the car and thus protecting the car and its occupants to a certain extent.

[0005] This utility model is achieved through the following technical solution: an airbag assembly, including a housing and an airbag bag, wherein the housing is used to be installed on a vehicle chassis, and the housing is provided with a receiving cavity for receiving the airbag bag, the airbag bag can be inflated to the inflated position, and in the inflated position, the airbag bag includes a first extension, a second extension and a third extension connected in sequence, the first extension extends from top to bottom and is partially exposed below the housing, the second extension extends horizontally from the lower end of the first extension, and the third extension extends upward from the end of the second extension away from the first extension.

[0006] As a further improved technical solution, when the second extension is located below the vehicle chassis and between the vehicle tires, the width of the second extension is less than or equal to the inner distance between the two tires; or when the second extension is located below the vehicle tires, the width of the second extension is greater than the inner distance between the two tires and less than or equal to the outer distance between the two tires.

[0007] As a further improved technical solution, the upper end of the third extension is located above the upper end of the first extension.

[0008] As a further improved technical solution, the inner wall of the airbag is coated with silicone.

[0009] As a further improved technical solution, the shell extends along the width direction of the vehicle chassis, and there are multiple airbags, which are distributed sequentially along the width direction of the vehicle chassis.

[0010] As a further improved technical solution, a connector is provided between the second extensions of adjacent airbag bags.

[0011] As a further improved technical solution, the connector is a sheet made of fabric.

[0012] As a further improved technical solution, the housing is provided with a mounting panel, the mounting panel is provided with an inflator, the airbag is fixedly connected to the mounting panel, and the inflator is used to inflate the airbag.

[0013] This utility model is also achieved through the following technical solution: a vehicle, including a car chassis, on which a pair of the above-mentioned airbag assemblies are provided, and when the airbags in the pair of airbag assemblies are in the inflated position, a pair of second extensions extend in opposite directions, and a pair of third extensions are far apart from each other and are respectively adjacent to the front and rear of the vehicle.

[0014] The airbag assembly provided by this utility model can be installed on the outside of the vehicle. When the vehicle falls vertically, the airbag can inflate, enabling the vehicle to achieve a certain degree of soft landing, thereby protecting the vehicle and its occupants. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the bottom of the vehicle in this utility model.

[0016] Figure 2 This is a side view of the airbag in this utility model after it has inflated.

[0017] Figure 3 This is another structural schematic diagram of the second extension in this utility model.

[0018] Figure 4 This is another structural schematic diagram of the second extension in this utility model.

[0019] Figure 5 This is a schematic diagram of the shell structure in this utility model.

[0020] Figure 6 yes Figure 5 Exploded view. Detailed Implementation

[0021] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1 to 6 As shown, this utility model provides an airbag assembly, including a housing 10 and an airbag bag 20. The housing 10 is used to be installed on a vehicle chassis 30 and extends along the width direction of the vehicle chassis 30. The housing 10 is provided with a receiving cavity 11 for receiving the airbag bag 20. The airbag bag 20 can be inflated to the inflated position. In the inflated position, the airbag bag 20 includes a first extension 21, a second extension 22 and a third extension 23 connected in sequence. The first extension 21 extends from top to bottom through the housing 10 and is partially located below the housing 10. The second extension 22 extends horizontally from the lower end of the first extension 21. In this embodiment, the horizontal direction is the vehicle length direction, that is, the second extension 22 extends from the lower end of the first extension 21 along the vehicle length direction. The third extension 23 extends upward from the end of the second extension 22 away from the first extension 21.

[0024] The airbag assembly can be installed on the vehicle chassis 30. In order to achieve a better soft landing effect when the vehicle falls, the airbag assembly of the vehicle chassis 30 is a pair, and a speed sensor is installed in the vehicle. The speed sensor is used to detect the acceleration of the vehicle in the horizontal and vertical directions. The speed sensor is connected to the ECU. The ECU makes a judgment based on the acceleration measured by the speed sensor. When the acceleration in both the horizontal and vertical directions exceeds the set value, the ECU transmits the signal to the inflator, and the inflator can inflate the airbag bag 20, causing the airbag bag 20 to expand.

[0025] During the inflation process, the airbag assembly on the vehicle chassis 30 has a pair of second extensions 22 extending in the opposite direction along the length of the vehicle, and a pair of third extensions 23 moving away from each other and adjacent to the outer sides of the front and rear of the vehicle, respectively, thereby protecting the vehicle and its occupants. In the vertical direction, the upper end of the third extension 23 is located above the upper end of the first extension 21, so that the third extension 23 can provide as much protection as possible for the front and rear of the vehicle.

[0026] In this embodiment, the second extension 22 can be located below the vehicle chassis 30 and between the vehicle tires 40. In this case, the width of the second extension 22 is less than or equal to the inner distance between a pair of tires 40. The soft landing of the vehicle relies on the elasticity of the tires 40. The airbag 20 has a relatively small deployment volume and requires relatively little gas, but its protective effect is relatively poor. In another embodiment, please refer to... Figure 2 As shown, the second extension 22 is located below the car tire 40. At this time, the width of the second extension 22 is less than or equal to the outer distance L1 of a pair of tires and greater than the inner distance L2 of a pair of tires. At this time, the second extension 22 also provides a certain degree of protection for the tires, and the protection effect is better. The width of the second extension 22 is preferably equal to the outer distance L1 of a pair of tires 40.

[0027] Regardless of which deployment method is used, the second extension 22 requires a significant amount of gas. To achieve better protection while reducing the gas volume, an airbag assembly includes multiple airbag bags 20 arranged side-by-side. These airbag bags 20 are sequentially distributed within the housing 10 along the width of the vehicle chassis 30. Please follow... Figure 3 , 4 As shown.

[0028] Please refer to Figure 1 , 5 As shown in Figure 6, the housing 10 includes a base plate 12, a panel 13, and a side plate 14 connecting the base plate 12 and the panel 13. The base plate 12 is fixed on the vehicle chassis 30. The panel 13 is arranged opposite to the base plate 12 and is located below the vehicle chassis 30, that is, the panel 13 is located below the base plate 12. The arrangement of the panel 13 is the same as that of the existing airbag system for the airbag to deploy, and will not be described in detail here.

[0029] Both the base plate 12 and the panel 13 extend along the width direction of the vehicle chassis 30, and the side plate 14 is perpendicularly connected to the base plate 12 and the panel 13. The base plate 12, the panel 13, and the side plate 14 define a receiving cavity 11 for accommodating the airbag bags 20. A mounting plate 15 is provided in the receiving cavity 11. The mounting plate 15 also extends along the width direction of the vehicle chassis 30. The mounting plate 15 has several through holes 16, and an inflator passes through the through holes 16. Multiple airbag bags 20 are fixed to the lower end of the mounting plate 15. One inflator is connected to one airbag bag 20. After the ECU issues an expansion command, the multiple airbag bags 20 expand downward and pop open the panel 13 under the inflation action of their corresponding inflators and continue to expand to the set position according to the preset path. At this time, multiple airbag bags 20 are formed in parallel. The airbag bags 20 on both sides abut against the bottom of the tire 40, and the width of the airbag bags 20 on both sides is greater than or equal to the width of the tire 40.

[0030] The housing 10 can be installed by fixing the base plate 12 to the vehicle chassis 30 with screws, or by fixing it to the vehicle chassis 30 with other connectors, or by welding. Alternatively, a corresponding cavity can be provided in the vehicle chassis 30 for further fixing with connectors. Of course, the installation methods for the housing 10 are not limited to these methods and will not be listed here.

[0031] Please refer to Figure 4 As shown, in order to better ensure the protective effect after inflation, a connector is provided between the second extensions 22 of adjacent airbag bags 20. The connector is preferably a sheet 24 made of fabric. The width of the sheet 24 is generally less than or equal to the minimum width of the airbag bag 20 and greater than or equal to half of the minimum width of the airbag bag 20. This setting can reduce the inflation volume and ensure the protective effect of the inflated airbag bag 20 on the car and the occupants.

[0032] The length of the sheet 24 can be less than or equal to the length of the second extension 22. Of course, the sheet 24 can also extend from the second extension 22 to the third extension 23, that is, the sheet 24 can also connect to the adjacent third extension 23. In this case, the length of the sheet 24 can be equal to the sum of the lengths of the second extension 22 and the third extension 23.

[0033] Airbag bags 20 are generally made of fabric, which has a certain degree of breathability. During inflation, a certain degree of pressure relief will occur. To solve this technical problem, silicone is applied to the inner wall or both the inner and outer walls of the airbag bag 20. Silicone is also applied to the seams of the airbag bag 20 before sewing, which can improve the heat resistance and sealing performance of the airbag bag.

[0034] With this airbag assembly, when a car falls and the speed sensor detects that the horizontal and vertical accelerations are both greater than the set values, the ECU sends a command to inflate the airbag. The airbag then expands to the set position, protecting the bottom, front, and rear of the vehicle. This not only protects the vehicle but also provides good protection for the occupants, further reducing damage to the vehicle and its occupants.

[0035] This utility model has been described through several specific embodiments. Those skilled in the art should understand that various modifications and equivalent substitutions can be made to this utility model without departing from its scope. Furthermore, various modifications can be made to this utility model for specific situations or circumstances without departing from its scope. Therefore, this utility model is not limited to the specific embodiments disclosed, but should include all embodiments falling within the scope of the claims of this utility model.

Claims

1. An airbag assembly, characterized in that, The device includes a housing and an airbag. The housing is for mounting on a vehicle chassis and has a receiving cavity for housing the airbag. The airbag is inflatable to an expanded position. In the expanded position, the airbag includes a first extension, a second extension, and a third extension connected in sequence. The first extension extends downward and is partially exposed below the housing. The second extension extends horizontally from the lower end of the first extension. The third extension extends upward from the end of the second extension away from the first extension.

2. The airbag assembly as described in claim 1, characterized in that, When the second extension is located below the vehicle chassis and between the vehicle tires, the width of the second extension is less than or equal to the inner distance between the two tires; or when the second extension is located below the vehicle tires, the width of the second extension is greater than the inner distance between the two tires and less than or equal to the outer distance between the two tires.

3. The airbag assembly as described in claim 1, characterized in that, The upper end of the third extension is located above the upper end of the first extension.

4. The airbag assembly as described in claim 1, characterized in that, The inner wall of the airbag is coated with silicone.

5. The airbag assembly as described in claim 1, characterized in that, The housing extends along the width direction of the vehicle chassis, and there are multiple airbags, which are distributed sequentially along the width direction of the vehicle chassis.

6. The airbag assembly as described in claim 5, characterized in that, A connector is provided between the second extensions of adjacent airbags.

7. The airbag assembly as described in claim 6, characterized in that, The connector is a sheet made of fabric.

8. The airbag assembly as described in claim 1, characterized in that, The housing is provided with a mounting panel, and an inflator is provided on the mounting panel. The airbag is fixedly connected to the mounting panel, and the inflator is used to inflate the airbag.

9. A vehicle, characterized in that, The vehicle includes a car chassis, on which a pair of airbag assemblies according to any one of claims 1 to 7 are provided. When the airbags in the pair of airbag assemblies are in the inflated position, a pair of second extensions extend in opposite directions, and a pair of third extensions are far apart from each other and are respectively adjacent to the front and rear of the vehicle.

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