Airbag device and vehicle

Abstract

The utility model discloses an air bag device and a vehicle, and relates to the technical field of vehicles, the air bag device comprises an air bag body, a first body and a second body are connected to jointly define an air storage cavity, and the first body is constructed into a bending structure; the drawstring is located outside the airbag body, the two ends of the drawstring are located on the two opposite sides of the first body respectively, and the drawstring is configured to be broken when the gas pressure in the airbag body reaches a preset pressure value. The first body is arranged, the two ends of the drawstring are located on the two opposite sides of the first body respectively to limit the first body, when a vehicle collides, a passenger moves forwards due to inertia to extrude the air bag body, the pressure of the air bag body rises, and when the air pressure in the air bag body reaches a preset pressure value, the drawstring is disconnected; the size of the air bag body is increased, the pressure is reduced, the risk that passengers are injured by the high-pressure air bag body is reduced, and therefore the health and safety of the passengers are guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle technical field especially is related to an air bag device and vehicle with the air bag device. BACKGROUND

[0002] In the related art, the air bag device is assembled to the steering wheel, when the vehicle collides, a protection air bag full of gas is formed between the passenger and the steering wheel, to prevent the passenger from moving forward due to inertia, causing secondary collision between the passenger and the device such as the steering wheel, thereby avoiding harm to the passenger. However, the passenger will squeeze the air bag when moving forward, and the air bag pressure increases continuously, which can easily increase the harm to the passenger. SUMMARY

[0003] The utility model aims at at least one of the technical problems existing in the prior art. Therefore, one purpose of the utility model is to provide an air bag device, which reduces the risk of injury to the passenger by high-pressure air bag body, thereby protecting the health and safety of the passenger.

[0004] The utility model further provides a vehicle.

[0005] According to the air bag device of the utility model embodiment, the first body is provided, and the two ends of the pull belt are located on the opposite sides of the first body to limit the first body, when the vehicle collides, the passenger squeezes the air bag body due to inertia, the pressure of the air bag body rises, and the pull belt breaks when the gas pressure in the air bag body reaches the preset pressure value, so that the first body is smoothly unfolded, the volume of the air bag body increases, and the pressure decreases, which is beneficial to reduce the risk of injury to the passenger by high-pressure air bag body, thereby protecting the health and safety of the passenger.

[0006] According to the air bag device of the utility model embodiment, the first body is provided, and the two ends of the pull belt are located on the opposite sides of the first body to limit the first body, when the vehicle collides, the passenger squeezes the air bag body due to inertia, the pressure of the air bag body rises, and the pull belt breaks when the gas pressure in the air bag body reaches the preset pressure value, so that the first body is smoothly unfolded, the volume of the air bag body increases, and the pressure decreases, which is beneficial to reduce the risk of injury to the passenger by high-pressure air bag body, thereby protecting the health and safety of the passenger.

[0007] In some embodiments of the utility model, the first body includes: a first sub-body and a second sub-body, and the first sub-body and the second sub-body are connected by bending.

[0008] In some embodiments of the utility model, the first body is annular, the second body includes a first body part and a second body part, the first body part and the second body part are opposite and spaced apart, the first body is connected between the first body part and the second body part, the pull belt spans the first body, and the two ends of the pull belt are connected with the first body part and the second body part respectively.

[0009] In some embodiments of the present application, the plurality of pull tapes are arranged along the extension direction of the first body.

[0010] In some embodiments of the present application, the plurality of pull tapes are arranged evenly along the extension direction of the first body.

[0011] In some embodiments of the present application, any two adjacent pull tapes are spaced apart.

[0012] In some embodiments of the present application, the pull tape is fixedly connected with the second body by a suture.

[0013] In some embodiments of the present application, the plurality of pull tapes and the plurality of first bodies are one-to-one corresponding.

[0014] In some embodiments of the present application, the first body and the second body are integrally formed.

[0015] The vehicle according to the embodiments of the present application comprises the airbag device of the above embodiments.

[0016] The additional aspects and advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or will be understood through the practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0017] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

[0018] Figure 1 is a structural schematic view of the airbag device according to the embodiments of the present application;

[0019] Figure 2 is a structural schematic view of the second body according to the embodiments of the present application;

[0020] Figure 3 is a schematic view of the airbag body according to the embodiments of the present application.

[0021] LIST OF REFERENCE NUMERALS:

[0022] Airbag device 100;

[0023] Airbag body 1; first body 11; first sub-body 111; second sub-body 112;

[0024] Second body 12; first body part 121; second body part 122; gas storage cavity 13;

[0025] Pull tape 2;

[0026] Airbag cover plate 3; generator 4; steering wheel 5. DETAILED DESCRIPTION

[0027] Embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0028] Reference is made below Figures 1-3 An airbag device 100 according to an embodiment of the present application is described.

[0029] As Figures 1-3 shown, the airbag device 100 according to an embodiment of the present application comprises: an airbag body 1, the airbag body 1 has a first body 11 and a second body 12, the first body 11 and the second body 12 are connected to jointly define a gas storage cavity 13, the first body 11 is configured as a bent structure; a pull strap 2, the pull strap 2 is located outside the airbag body 1, both ends of the pull strap 2 are fixedly connected with the airbag body 1, and the two ends of the pull strap 2 are respectively located on opposite sides of the first body 11, the pull strap 2 is configured to break when the gas pressure in the airbag body 1 reaches a preset pressure value.

[0030] The airbag device 100 can include an airbag cover plate 3, a generator 4, etc. The first body 11 is configured as a bent structure, for example: the first body 11 can be bent outwardly toward the airbag body 1, or can be bent inwardly toward the airbag body 1. The airbag body 1 can be composed of a film structure, and the first body 11 can be configured as a pleated structure, so that the first body 11 is configured as a bent structure. As some embodiments of the present application, the first body 11 and the second body 12 are integrally formed. As some embodiments of the present application, the first body 11 and the second body 12 are bonded to connect the first body 11 and the second body 12.

[0031] The pull strap 2 is located outside the airbag body 1 and both ends are fixedly connected with the airbag body 1, further, both ends of the pull strap 2 are fixedly connected with the second body 12, for example: both ends of the pull strap 2 can be but not limited to fixedly connected with the second body 12 by a suture, so that both ends of the pull strap 2 are respectively located on opposite sides of the first body 11, which is conducive to the pull strap 2 limiting the first body 11, so that the first body 11 remains in a bent state.

[0032] The first body 11 and the second body 12 jointly define a gas storage cavity 13. In normal use of the vehicle, the gas storage cavity 13 is empty of gas, and the airbag body 1 is stored in the steering wheel 5 of the vehicle. When the vehicle is in a collision and reaches the ignition condition of the airbag body 1, the airbag ECU (Electronic Control Unit) issues an ignition instruction, the generator 4 ignites, and the gas enters the gas storage cavity 13 to inflate the airbag body 1, thereby reducing the risk of secondary collision between the occupant and the steering wheel 5 and other devices due to the inertia of the occupant moving forward.

[0033] When the occupant continues to move forward and press the airbag body 1, the pressure in the airbag body 1 continuously increases to a preset pressure value, the pull belt 2 breaks to release the first body 11 from the pull belt 2, and the first body 11 unfolds to increase the volume of the airbag body 1 and reduce the pressure, thereby reducing the risk of injury to the occupant by the high-pressure airbag body 1 and ensuring the health and safety of the occupant.

[0034] Specifically, when the vehicle is in a collision and reaches the ignition condition of the airbag body 1, the airbag ECU issues an ignition instruction, the generator 4 ignites, and the gas enters the gas storage cavity 13 to inflate the airbag body 1. When the airbag body 1 inflates to a certain extent, the airbag cover plate 3 is torn, and the airbag body 1 fully unfolds to form a protective airbag between the human body and the steering wheel 5, thereby reducing the risk of secondary collision between the occupant and the steering wheel 5 and other devices due to the inertia of the occupant.

[0035] During the unfolding of the airbag body 1, the airbag body 1 inflates, and the first body 11 remains in a bent state. When the occupant continues to move forward and press the airbag body 1, the pressure in the airbag body 1 continuously increases to a preset pressure value, the pull belt 2 breaks to release the first body 11 from the pull belt 2, and the first body 11 unfolds to increase the volume of the airbag body 1 and reduce the pressure. By setting the airbag body 1 to unfold in stages, the risk of injury to the occupant by the high-pressure airbag body 1 can be reduced, thereby ensuring the health and safety of the occupant. Compared with the self-adaptive airbag using an internal pull belt 2 to control the volume of the airbag, the pull belt 2 of the present application can automatically disconnect when the pressure reaches the preset value, without the need for additional mechanism control. The structure is simple and the cost is low, which is conducive to the low-cost design of the vehicle.

[0036] Therefore, by setting the first body 11 and locating the two ends of the pull belt 2 on opposite sides of the first body 11 to limit the first body 11, when the vehicle is in a collision, the occupant moves forward due to inertia and presses the airbag body 1. When the pressure in the airbag body 1 reaches a preset pressure value, the pull belt 2 breaks to allow the first body 11 to unfold smoothly, the volume of the airbag body 1 increases, and the pressure decreases, which is conducive to reducing the risk of injury to the occupant by the high-pressure airbag body 1, thereby ensuring the health and safety of the occupant.

[0037] In some embodiments of the present application, as shown in Figure 3 The first body 11 can include a first sub-body 111 and a second sub-body 112, and the first sub-body 111 and the second sub-body 112 are connected by bending.

[0038] In some embodiments of the present application, the first sub-body 111 and the second sub-body 112 are integrally formed. In some embodiments of the present application, the first sub-body 111 and the second sub-body 112 are sewn together to connect the first body 11 and the second body 12. Further, the first sub-body 111 and the second sub-body 112 are connected by bending, for example, the first sub-body 111 and the second sub-body 112 can be bent outwardly towards the airbag body 1, or can be bent inwardly towards the airbag body 1.

[0039] The bending arrangement of the first sub-body 111 and the second sub-body 112 can make the structure of the first body 11 reasonable, which is conducive to reliable limiting of the first sub-body 111 and the second sub-body 112 by the pull strap 2. Furthermore, when the pull strap 2 is disconnected, the first body 11 can be deployed in a predetermined direction, reducing the risk of the first body 11 being randomly arranged to deploy the first body 11 towards the passenger direction, thereby reducing the risk of injury to the passenger during the deployment of the first body 11, and further protecting the health and safety of the passenger.

[0040] In some embodiments of the present application, as shown in Figure 2 The first body 11 is annular, the second body 12 includes a first body portion 121 and a second body portion 122, the first body portion 121 and the second body portion 122 are opposite and spaced apart, the first body 11 is connected between the first body portion 121 and the second body portion 122, and the pull strap 2 spans the first body 11, and the two ends of the pull strap 2 are connected with the first body portion 121 and the second body portion 122 respectively.

[0041] The first body portion 121 and the second body portion 122 are arranged opposite to each other and spaced apart. The first body 11 can be annular, so that the first body 11 can be connected between the first body portion 121 and the second body portion 122, and the first body 11 is arranged along the circumference of the first body portion 121 and the second body portion 122. Such an arrangement can make the structure of the first body 11 reasonable, and by configuring the first body 11 as an annular shape, the first body 11 can be evenly deployed along the circumference of the first body portion 121 and the second body portion 122 when the vehicle is in a collision, thereby reliably protecting passengers with smaller body sizes.

[0042] The pull belt 2 crosses the first body 11, and two ends of the pull belt 2 are connected with the first body part 121 and the second body part 122 respectively, for example, the two ends of the pull belt 2 are connected with the first body part 121 and the second body part 122 through sewing threads, the two ends of the pull belt 2 are connected with the first body part 121 and the second body part 122 through adhesion, so that the pull belt 2 can reliably bend the first body 11 between the first body part 121 and the second body part 122, and reduce the risk that the first body 11 is randomly unfolded to cause the air bag body 1 to lose the staged unfolding function.

[0043] As some embodiments of the present application, the first body 11 can be configured as an arc shape, along the height direction of the vehicle, since the lower end of the first body 11 is close to the occupant, configuring the first body 11 as an arc shape can reduce the risk that the lower end of the first body 11 causes injury to the occupant. Further, the shape of the first body 11 can be selected according to the size of the occupant, so that the air bag device 100 can protect occupants of different sizes, which is beneficial to improve the adaptability of the air bag device 100.

[0044] In some embodiments of the present application, as shown in Figure 3 The plurality of pull belts 2 are arranged along the extension direction of the first body 11.

[0045] The plurality of pull belts 2 are arranged along the extension direction of the first body 11.

[0046] In some embodiments of the present application, as shown in Figure 3 The plurality of pull belts 2 are arranged along the extension direction of the first body 11.

[0047] The plurality of pull tapes 2 are uniformly arranged along the extension direction of the first body 11, which can uniformly limit the first body 11 along the extension direction of the first body 11, reduces the risk of damage of any one of the plurality of pull tapes 2 due to stress concentration, and when the vehicle collides and the airbag body 1 is deployed, the first body 11 can be reliably and uniformly deployed in the circumferential direction, reduces the risk that the first body 11 is not deployed in place due to asynchronous deployment, thereby reducing the risk that the passenger is injured by the high-pressure airbag body 1 due to the pressure of the airbag body 1 not being sufficiently reduced, and is beneficial to further protect the health and safety of the passenger.

[0048] In some embodiments of the utility model, as shown in Figure 1 Any two adjacent pull tapes 2 are spaced apart.

[0049] The two adjacent pull tapes 2 are spaced apart, so that the pull tape 2 can be automatically disconnected when the pressure reaches the preset value, reducing the risk that the pull tape 2 cannot be disconnected due to the connection of the two adjacent pull tapes 2, thereby reducing the risk that the passenger is injured by the high-pressure airbag body 1 due to the pressure of the airbag body 1 not being reduced, and is beneficial to improve the reliability of the staged deployment function of the airbag body 1, and further reliably protect the life safety of the passenger.

[0050] In some embodiments of the utility model, as shown in Figure 2 The pull tape 2 is fixedly connected with the second body 12 through a suture.

[0051] The pull tape 2 is fixedly connected with the second body 12 through a suture, which can improve the connection reliability of the pull tape 2 and the second body 12. Since the service life of the vehicle is relatively long, compared with other connection methods such as adhesive connection, the pull tape 2 can reduce the risk of falling off due to long time, thereby reducing the risk of invalidation of the pull tape 2 for limiting the first body 11, and further improving the reliability of the staged deployment function of the airbag body 1.

[0052] In some embodiments of the utility model, as shown in Figure 1 The pull tape 2 and the first body 11 are both multiple, and the plurality of pull tapes 2 and the plurality of first bodies 11 are one-to-one corresponding.

[0053] The plurality of pull belts 2 and the plurality of first bodies 11 are one-to-one corresponding, that is, one pull belt 2 corresponds to one first body 11, so that the pull belt 2 and the first body 11 are reasonably arranged, the risk that the first body 11 is randomly unfolded due to the lack of the pull belt 2 limiting the first body 11 is reduced, when the gas pressure in the airbag body 1 reaches the preset value, the risk that the first body 11 cannot be smoothly unfolded due to the first body 11 limiting a plurality of pull belts 2 is reduced, thereby improving the reliability of the staged unfolding function of the airbag body 1, and further improving the working reliability of the airbag device 100.

[0054] Further, the number and position of the first body 11 can be selected according to the size of the passenger, and the number and position of the pull belt 2 and the number and position of the first body 11 are matched, so that the airbag device 100 can protect passengers of different sizes, and the adaptability of the airbag device 100 is further improved.

[0055] In some embodiments of the utility model, as shown in Figure 1 The first body 11 and the second body 12 are integrally formed.

[0056] The first body 11 and the second body 12 are integrally formed, that is, the first body 11 and the second body 12 are configured as an integrally formed member, the integrally formed member has good structural strength, by integrally forming the first body 11 and the second body 12, the connection reliability of the first body 11 and the second body 12 can be improved, the probability of fracture at the connection of the first body 11 and the second body 12 can be reduced, thereby reducing the risk that the first body 11 and the second body 12 crack to cause the airbag body 1 to fail to protect the passenger, and the use reliability of the airbag body 1 is improved. Further, by integrally forming the first body 11 and the second body 12, the machining process in the production process can be reduced, and the machining efficiency of the airbag body 1 is improved.

[0057] The vehicle according to the utility model embodiment comprises the airbag device 100 of the above-mentioned embodiment. By arranging the first body 11, and arranging the two ends of the pull belt 2 on the opposite sides of the first body 11 to limit the first body 11, when the vehicle collides, the passenger moves forward due to inertia and presses the airbag body 1, the pressure of the airbag body 1 rises, the pull belt 2 breaks when the gas pressure in the airbag body 1 reaches the preset pressure value, so that the first body 11 is unfolded smoothly, the volume of the airbag body 1 increases and the pressure decreases, which is beneficial to reduce the risk that the passenger is injured by the high-pressure airbag body 1, thereby protecting the health and safety of the passenger.

[0058] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0059] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. An airbag device (100) characterized by comprising: The airbag device (100) comprises: an airbag body (1) having a first body (11) and a second body (12) connected to define a gas storage cavity (13) together, the first body (11) being configured as a bent structure; a pull belt (2) located outside the airbag body (1), both ends of the pull belt (2) being fixedly connected with the airbag body (1), and the two ends of the pull belt (2) being located on opposite sides of the first body (11) respectively, the pull belt (2) being configured to break when the gas pressure in the airbag body (1) reaches a preset pressure value.

2. The airbag device (100) according to claim 1, characterized by The first body (11) comprises a first sub-body (111) and a second sub-body (112), and the first sub-body (111) and the second sub-body (112) are connected in a bent manner.

3. The airbag device (100) according to claim 1, characterized by The first body (11) is annular, the second body (12) comprises a first body portion (121) and a second body portion (122), the first body portion (121) and the second body portion (122) are opposite and spaced apart, the first body (11) is connected between the first body portion (121) and the second body portion (122), and the pull belt (2) spans the first body (11), and both ends of the pull belt (2) are connected with the first body portion (121) and the second body portion (122) respectively.

4. The airbag device (100) according to claim 3, characterized by The pull belt (2) is a plurality of pull belts (2), and the plurality of pull belts (2) are arranged along the extension direction of the first body (11).

5. The airbag device (100) according to claim 4, characterized by The plurality of pull belts (2) are uniformly arranged along the extension direction of the first body (11).

6. The airbag device (100) according to claim 4, characterized by Any two adjacent pull belts (2) are spaced apart.

7. The airbag device (100) according to claim 1, characterized by The pull belt (2) is fixedly connected with the second body (12) by a suture.

8. The airbag device (100) according to claim 1, characterized by The pull belt (2) and the first body (11) are a plurality of pull belts (2) and a plurality of first bodies (11) respectively.

9. The airbag device (100) according to any one of claims 1 to 8, characterized by, The first body (11) and the second body (12) are integrally formed.

10. A vehicle characterized by comprising: The airbag device (100) of any one of claims 1-9.

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