Airbag device and vehicle

Abstract

The invention discloses an air bag device and a vehicle, and belongs to the technical field of vehicle safety protection devices. The airbag device comprises a gas generator and an airbag air bag, wherein the airbag air bag comprises a main air bag as well as a rear side wing air bag, a left side wing air bag and a right side wing air bag which are respectively connected to the tail end of the main air bag; in the inflated state, the main air bag roughly extends in the horizontal direction, the rear side wing air bag extends upwards along the tail end of the rear side of the main air bag to cover a partial area of a copilot instrument panel, and the left side wing air bag and the right side wing air bag extend downwards along the left tail end and the right tail end of the main air bag to a copilot carpet. The limitation that a traditional air bag only protects the knee or only protects the single part of the leg is solved, and the risk of injuries such as lower limb fracture and scratch is remarkably reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile safety devices, and in particular to an airbag device and a vehicle for protecting the lower limbs of a co-driver. Background Art

[0002] With the development of the automotive industry and increasing demands for vehicle safety performance, automotive safety standards are becoming increasingly stringent. Regulations require vehicles to minimize the risk of injury to occupants in all collision scenarios. Vehicles with more comprehensive safety features are also more popular with consumers. Airbags, an integral part of modern vehicles, have significantly improved passenger protection in the event of a collision. Airbags are designed to rapidly inflate in the event of a collision, forming a soft "barrier" that cushions the occupants from the potential impact point, significantly reducing injuries. To enhance the competitiveness of their products, automakers are actively seeking new technologies and devices to improve vehicle safety performance and meet market demand.

[0003] Traditional passenger airbags are primarily used to protect the front passenger's head, neck, and chest during a vehicle collision. However, in the event of a head-on collision, the front passenger's lower limbs tend to move significantly, potentially making hard contact with the lower end of the dashboard, increasing the risk of lower limb injury. In particular, when the seat is adjusted rearward, the passenger's feet may also lose their support point, causing uncontrolled movement of the lower limbs in a collision, increasing the risk of fractures and ligament damage. Therefore, the development and application of airbags specifically designed to protect the front passenger's lower limbs is particularly important. Currently, some models equipped with front passenger knee airbags can protect the passenger's knees, but the protection for the passenger's calves and feet is not comprehensive. Therefore, an airbag that can protect both the legs and feet is needed to protect the passenger's lower limbs and comprehensively reduce the risk of lower limb injury. Summary of the Invention

[0004] To this end, the present invention provides an airbag device and a vehicle equipped with the airbag device, which can effectively protect the lower limbs of the front passenger passenger.

[0005] In view of the above technical problems, the present invention provides the following technical solutions:

[0006] An airbag device comprises: a gas generator and an airbag bag, wherein the airbag bag comprises a main airbag and a rear wing airbag, a left wing airbag and a right wing airbag respectively connected to the ends of the main airbag; in an inflated state, the main airbag extends approximately in a horizontal direction, the rear wing airbag extends upward along the rear end of the main airbag to cover a partial area of ​​the co-pilot instrument panel, and the left wing airbag and the right wing airbag extend downward along the left and right ends of the main airbag to the co-pilot carpet.

[0007] In some embodiments of the present invention, a size of the communication channel between the main airbag and the rear wing airbag is larger than a size of the communication channel between the main airbag and the left wing airbag / the right wing airbag.

[0008] In some embodiments of the present invention, the main airbag is provided with at least one first drawstring. In the inflated state, the first drawstring extends substantially along the X direction and a rear end thereof is spaced apart from the rear wing airbag.

[0009] In some embodiments of the present invention, the rear wing airbag is provided with at least one second drawstring. In the inflated state, the second drawstring extends substantially along the Z direction and a lower end portion thereof is spaced apart from the main airbag.

[0010] In some embodiments of the present invention, the main airbag and the left wing airbag / the right wing airbag are separated by a third drawstring extending along the X direction, and the third drawstring is provided with a plurality of connecting holes connecting the two spaces.

[0011] In some embodiments of the present invention, the left wing airbag / the right wing airbag is provided with at least one fourth drawstring. In the inflated state, the fourth drawstring extends substantially along the Z direction and its upper end is spaced apart from the main airbag.

[0012] In some embodiments of the present invention, the maximum width of the rear wing airbag along the Y direction is substantially equal to the width of the main airbag along the Y direction, and the maximum length of the left wing airbag and the right wing airbag along the X direction is substantially equal to the length of the main airbag along the X direction.

[0013] In some embodiments of the present invention, the airbag device is installed on the front panel between the passenger instrument panel and the passenger carpet.

[0014] In some embodiments of the present invention, in the inflated state, the main airbag extends along the Y direction to cover an area of ​​80% to 90% of the width of the front panel.

[0015] The present invention also provides a vehicle, which includes the airbag device.

[0016] The technical solution of the present invention has the following technical effects compared with the prior art:

[0017] In the airbag device and vehicle provided by the present invention, by arranging the rear wing airbags to cover the knee area, and the left and right wing airbags to cover the calf to ankle area, full-dimensional protection is formed from the knee to the foot, which solves the limitations of traditional airbags that only protect the knees or only protect a single part of the leg, and significantly reduces the risk of injuries such as fractures and abrasions of the lower limbs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, which will help to understand the objects and advantages of the present invention.

[0019] Figure 1 A schematic structural diagram of a specific embodiment of the airbag device provided by the present invention;

[0020] Figure 2 A schematic structural diagram of a specific embodiment of the airbag device provided by the present invention;

[0021] Figure 3 A partial cross-sectional view of a specific embodiment of the airbag device provided by the present invention;

[0022] Figure 4 This is a structural schematic diagram of the airbag device provided by the present invention installed on a vehicle in an uninflated state;

[0023] Figure 5 This is a schematic structural diagram of the airbag device provided by the present invention installed on a vehicle in an inflated state;

[0024] Figure 6 This is another structural schematic diagram of the airbag device provided by the present invention installed on a vehicle in an inflated state. DETAILED DESCRIPTION

[0025] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," and "rear" and the like indicate positions or locations after a device or component is installed on a vehicle. For example, the X direction represents the front-to-back direction of the vehicle, the Y direction represents the left-to-right direction of the vehicle, and the Z direction represents the left-to-right direction of the vehicle. These terms are used solely to facilitate the description of the present invention and to simplify the description. They do not indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediary, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0028] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0029] like Figure 1-Figure 3 FIG. 1 is a specific embodiment of the airbag device provided by the present invention, as shown in FIG. Figure 4 As shown, the airbag device 1 is installed on the front panel 4 between the front passenger instrument panel 2 and the front passenger carpet 3 to protect the lower limbs of the front passenger occupant.

[0030] Specifically, if Figure 1 、 Figure 2 As shown, the airbag system 1 comprises an inflator 10 and an airbag bag 20. The inflator 10 utilizes a dual-stage ignition gas generator, connected to the airbag bag 20's air inlet via a conduit, and can output high-pressure gas in stages based on the intensity of the collision. The airbag bag 20 is made of fabric coated with rubber, offering tear resistance and high airtightness. It comprises a main airbag 21, rear wing airbags 22, a left wing airbag 23, and a right wing airbag 24, all connected by an integrated sewing process to form a connected cavity.

[0031] Among them, in the inflated state, the main airbag 21 is a flat rectangular structure and extends in the horizontal direction. The front edge of the main airbag 21 is fixed to the front panel 4 by bolts, and the rear edge is a free end. It can be unfolded toward the co-pilot seat during the inflation process until it covers the lower edge of the co-pilot instrument panel 2. The unfolded length of the main airbag 21 along the Y direction is adapted to the width of the vehicle's front panel 4. For example, the main airbag 21 extends along the Y direction to cover 80%-90% of the width of the front panel 4, covering the main lateral space of the co-pilot area, providing a stable support foundation for the rear wing airbag 22 and the left and right wing airbags 24.

[0032] The rear wing airbags 22 are connected to the middle of the rear end of the main airbag 21. Their width in the Y direction is consistent with the width of the main airbag 21 in the Y direction. Their deployment direction forms an approximately 120° angle with the main airbag 21, extending upward along the rear end of the main airbag 21. Once inflated, the top edges of the rear wing airbags 22 cover the lower area of ​​the passenger instrument panel 2, providing wraparound protection for the occupant's knees. The left and right wing airbags 23 and 24 are respectively connected to the left and right ends of the main airbag 21. Their maximum length in the X direction (i.e., the area connected to the main airbag 21) is consistent with the length of the main airbag 21 in the X direction. Their deployment direction is approximately perpendicular to the extension direction of the main airbag 21, extending downward along the left and right ends of the main airbag 21 to the passenger carpet 3. After inflation, the left wing airbag 23 and the right wing airbag 24 respectively cover the carpet areas on the left and right sides of the passenger seat, and can wrap the occupant's calves to ankles.

[0033] The above-mentioned airbag device 1 forms full-dimensional protection from the knee to the foot by setting the rear side wing airbag 22 to cover the knee area and the left and right side wing airbags 24 to cover the calf to ankle area, thereby solving the limitation of traditional airbags that only protect the knee or only protect a single part of the leg, and significantly reducing the risk of injuries such as fractures and abrasions of the lower limbs.

[0034] Specifically, in one embodiment, the communication channel between the main airbag 21 and the rear wing airbags 22 is a rectangular opening, for example, with a width of 10-15 cm and a height of 8-10 cm. The communication channels between the main airbag 21 and the left and right wing airbags 23, 24 are also rectangular openings, for example, with a width of 5-8 cm and a height of 6-8 cm. By designing the communication channel between the main airbag 21 and the rear wing airbags 22 to be larger than the communication channels between the main airbag 21 and the left and right wing airbags 24, the rear wing airbags 22 are preferentially inflated, ensuring that the knee protection is activated before the calf protection, consistent with the order of force transmission in a collision with the human lower limbs.

[0035] Specifically, at least one first drawstring 25 is provided inside the main air bag 21. In a specific embodiment, Figure 1 As shown, a first drawstring 25 is positioned in the central area of ​​the main airbag 21. Made of high-strength polyester webbing, its ends are sewn to the upper and lower sidewalls of the main airbag 21 and extend generally in the X-direction, dividing the main airbag 21 into left and right compartments. When inflated, the first drawstring 25 is tensioned, limiting excessive expansion of the main airbag 21 in the Y-direction and ensuring effective deployment of the main airbag 21 in the X-direction. The rear end of the first drawstring 25 is 5-8 cm away from the rear wing airbags 22. This spacing prevents the drawstring from interfering with the deployment of the rear wing airbags 22.

[0036] Specifically, at least one second drawstring 26 is provided inside the rear wing airbag 22. In a specific embodiment, Figure 1 As shown, the rear wing airbag 22 is equipped with two second drawstrings 26, symmetrically positioned on either side of its centerline. These drawstrings 26 extend generally in the Z-direction, with their ends sewn to the upper and lower sidewalls of the rear wing airbag 22. When inflated, the tension of the second drawstrings 26 controls the deployed thickness of the rear wing airbag 22, ensuring precise coverage of the knee area beneath the instrument panel while preventing excessive rigidity caused by overinflation. The lower end of the second drawstring 26 is spaced 3-5 cm from the main airbag 21, minimizing the impact of the main airbag 21's expansion on the posture of the rear wing airbag 22.

[0037] Specifically, in a specific embodiment, Figure 3 As shown, a third drawstring 27 is installed between the main airbag 21 and the left and right wing airbags 23 and 24, respectively. The third drawstring 27 extends along the X-axis, with its ends connecting the edges of the main airbag 21 and the wing airbags, respectively. Connecting holes 271 with a diameter of 1-2 cm are evenly distributed along the X-axis on the third drawstring 27, with a spacing of approximately 3-5 cm between the holes. This design not only separates the main airbag 21 from the wing airbags through the drawstring, limiting lateral expansion of the wing airbags, but also increases gas flow resistance through the connecting holes 271, ensuring that the left and right wing airbags 24 inflate later than the rear wing airbags 22.

[0038] Specifically, in a specific embodiment, Figure 1 、 Figure 3 As shown, two fourth drawstrings 28 are installed within each of the left and right wing airbags 23 and 24. These fourth drawstrings 28 extend generally in the Z-direction, with their ends sewn to the upper and lower sidewalls of the left and right wing airbags 23 and 24, respectively. When inflated, the fourth drawstrings 28 are tensioned to control the deployed thickness of the wing airbags. The upper end of each fourth drawstring 28 is spaced 2-3 cm from the main airbag 21, minimizing the impact of the main airbag's 21 inflation on the wing airbag's posture.

[0039] The aforementioned drawstrings within the main airbag 21, rear wing airbags 22, left wing airbags 23, and right wing airbags 24 effectively limit excessive inflation and disordered deformation. This ensures wide coverage of the main airbag 21 along the Y-axis, precise height of the rear wing airbags 22 along the Z-axis, and seamless deployment of the left and right wing airbags 24 along the -Z-axis, thus preventing protection failure due to airbag misalignment. Furthermore, the airbag device 1 utilizes a single-piece, sewn airbag structure and high-strength fabric material, ensuring structural stability under high-pressure inflation and collision impact, thereby enhancing the device's service life and safety.

[0040] The present invention also provides a specific embodiment of a vehicle, which includes a vehicle body, a chassis, a power system and an airbag device 1 according to any of the above embodiments. Figure 4 As shown, the airbag device 1 is installed on the front panel 4 between the passenger instrument panel 2 and the passenger carpet 3. The gas generator 10 of the airbag device 1 is electrically connected to the collision sensor of the vehicle. When the collision sensor detects that the vehicle has a frontal collision and the collision intensity reaches a preset threshold, the gas generator 10 starts and inflates the airbag airbags 20, so that each airbag is deployed in a preset posture (such as Figure 5 、 Figure 6 It complies with the force transmission order of the lower limbs of the human body during a collision, thus protecting the lower limbs of the front passenger and improving the accuracy of the protection.

[0041] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. An airbag device, characterized in that: include: An inflator and an airbag, wherein the airbag includes a main airbag and a rear wing airbag, a left wing airbag, and a right wing airbag respectively connected to ends of the main airbag; In the inflated state, the main airbag extends roughly in the horizontal direction, the rear wing airbag extends upward along the rear end of the main airbag to cover a partial area of ​​the co-pilot instrument panel, and the left wing airbag and the right wing airbag extend downward along the left and right ends of the main airbag to the co-pilot carpet.

2. The airbag device according to claim 1, characterized in that: The size of the communication passage between the main airbag and the rear wing airbag is greater than the size of the communication passage between the main airbag and the left wing airbag / the right wing airbag.

3. The airbag device according to claim 1, characterized in that: The main airbag is provided with at least one first drawstring. In the inflated state, the first drawstring extends substantially along the X direction and the rear end portion thereof is spaced apart from the rear wing airbag.

4. The airbag device according to claim 1, characterized in that: The rear wing airbag is provided with at least one second drawstring. In the inflated state, the second drawstring extends substantially along the Z direction and the lower end portion thereof is spaced apart from the main airbag.

5. The airbag device according to claim 1, characterized in that: The main airbag and the left wing airbag / the right wing airbag are separated by a third drawstring extending along the X direction, and the third drawstring is provided with a plurality of communication holes connecting the two spaces.

6. The airbag device according to claim 1, characterized in that: The left wing airbag / the right wing airbag is provided with at least one fourth drawstring. In the inflated state, the fourth drawstring extends substantially along the Z direction and the upper end portion thereof is spaced apart from the main airbag.

7. The airbag device according to claim 1, characterized in that: The maximum width of the rear wing airbag along the Y direction is substantially equal to the width of the main airbag along the Y direction, and the maximum length of the left wing airbag and the right wing airbag along the X direction is substantially equal to the length of the main airbag along the X direction.

8. The airbag device according to claim 1, characterized in that: The airbag device is installed on the front panel between the passenger instrument panel and the passenger carpet.

9. The airbag device according to claim 8, characterized in that: In the inflated state, the main airbag extends along the Y direction to cover an area of ​​80% to 90% of the width of the front panel.

10. A vehicle, characterized in that: The airbag device comprises any one of claims 1 to 9.

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