Airbag and airbag assembly
By designing an airbag air bag with multiple recesses and forked parts, multiple protections for passenger heads and knees are achieved, solving the problems of multiple parts and heavy weight of existing airbags, reducing manufacturing costs and improving flexibility.
Patent Information
- Application Number
- CN202421499275.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-27
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-06-27
AI Technical Summary
The protection function of existing airbags is single, resulting in the need to install multiple airbags and multiple gas generators in the vehicle, increasing the number of parts and weight.
An airbag with multiple protection functions is designed, with a plurality of recesses and forks, which can provide protection of the head and knees in an expanded state and achieve expansion of the airbag through a single gas generator.
Multiple protections for passenger head and knees are achieved, reducing parts quantity and weight, reducing manufacturing costs, and improving design flexibility of airbags.
Smart Images
Figure CN222682374U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to a safety device in a vehicle, and in particular to an airbag and an airbag assembly. Background Art
[0002] In order to protect the passengers in the vehicle in the event of a vehicle collision, airbags are widely used in existing vehicles as a safety device to protect the passengers. Airbags include, for example, airbags arranged in the steering wheel, airbags arranged in the instrument panel, and overhead airbags arranged on the top of the vehicle. When the vehicle collides or is impacted, the gas generator of the airbag receives a signal transmitted via a wire harness connected to the gas generator, causing an explosion. Then, the gas generated by the explosion will rapidly inflate the folded airbag of the airbag, and the inflated airbag will expand to protect the passengers from injuries caused by the impact.
[0003] However, the existing airbags are designed to protect a single part of the passenger, that is, the protective function of the airbag is single, which inevitably leads to the installation of a large number of airbags in the vehicle and the need for multiple parts (eg, gas generators).
[0004] Therefore, an airbag that can provide multiple protection functions and has fewer parts is desired. Utility Model Content
[0005] The purpose of the present application is to provide an airbag that can provide multiple protection functions and has fewer parts.
[0006] One aspect of the present application provides an airbag, which is used as a passenger airbag, comprising:
[0007] The air bag has an expanded state and a stowed state.
[0008] in,
[0009] In the unfolded state, the airbag comprises a main body and a first fork and a second fork located below the main body, the main body is provided with a first recessed portion, the first fork and the second fork define a second recessed portion, and,
[0010] The first recess and the second recess are both positioned on a first side of the air bag.
[0011] According to an embodiment of the present application, the airbag further includes a third recessed portion located on a second side of the airbag opposite to the first side.
[0012] According to an embodiment of the present application, it further includes a drawstring arranged on the inner side of the airbag, one end of the drawstring is fixed to the first recessed portion of the airbag, and the other end is fixed to the second side of the airbag.
[0013] According to an embodiment of the present application, the air bag is defined by the first main panel, the second side panel, the third side panel and the fourth side panel.
[0014] According to an embodiment of the present application, the first main panel includes a first edge, a second edge, a third edge and a fourth edge, the first edge and the fourth edge being opposite to each other and connected to two opposite edges of the fourth side panel via fixing portions, respectively, the other two opposite edges of the fourth side panel are connected to partial edges of the second side panel and the third side panel via fixing portions, the remaining edge of the second side panel is connected to the second edge of the first main panel via a fixing portion, and the remaining edge of the third side panel is fixed to the third edge of the first main panel via a fixing portion.
[0015] According to an embodiment of the present application, the second side panel and the third side panel are configured to be identical to each other.
[0016] According to an embodiment of the present application, a gas generator is further included, and the airbag is further provided with a communication port at the second side that communicates with the gas generator.
[0017] Another aspect of the present application provides an airbag assembly, comprising an instrument panel and any one of the above-mentioned airbags housed in the instrument panel.
[0018] According to an embodiment of the present application, in the deployed state, the third recessed portion located on the second side of the airbag opposite to the first side accommodates a portion of the instrument panel.
[0019] According to an embodiment of the present application, the airbag is further provided with a communication port at the second side that communicates with the gas generator, and the communication port is positioned at a lower side of the instrument panel. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The features, advantages and technical effects of the exemplary embodiments of the present application will be described below with reference to the accompanying drawings. In the accompanying drawings, the same symbols indicate the same elements, wherein:
[0021] Figure 1 A schematic diagram of an airbag according to an embodiment of the present application is schematically shown.
[0022] Figure 2 The diagram schematically shows an airbag assembly according to an embodiment of the present application.
[0023] Figure 3 Components of an airbag according to an embodiment of the present application are schematically shown. DETAILED DESCRIPTION
[0024] The specific implementation of the airbag and airbag assembly according to the present application will be described below in conjunction with the accompanying drawings. The following detailed description and the accompanying drawings are used to exemplarily illustrate the principles of the present application. The present application is not limited to the preferred embodiments described. The various embodiments described in the present application can be used alone or in any combination. The scope of protection of the present application is defined by the claims.
[0025] In addition, spatially relative terms (such as "upper", "lower", "left", and "right") are used to describe the relative positional relationship of an element shown in the drawings to another element. Therefore, the spatially relative terms can be applied to directions different from those shown in the drawings when used. Obviously, although for ease of description, all of these spatially relative terms refer to the directions shown in the drawings, those skilled in the art will understand that directions different from those shown in the drawings can be used.
[0026] Figure 1 A schematic diagram of an airbag according to an embodiment of the present application is schematically shown. Figure 2 The schematic diagram of the airbag assembly according to the embodiment of the present application is schematically shown. Figure 1 and Figure 2 An airbag and an airbag module according to embodiments of the present application are described.
[0027] like Figure 1 As shown, one aspect of the present application provides an airbag 1, which is used as a passenger airbag and includes an airbag 10, the airbag 10 has a deployed state and a stowed state, and a gas generator (not shown) is used to inflate the airbag 10 so that the airbag 10 expands and enters the deployed state. In an embodiment of the present application, the airbag 1 may include only one gas generator to convert the airbag 10 from the stowed state to the deployed state. In order to clearly see the structure of the airbag 10, Figure 1 The airbag 10 shown in FIG. 1 is in a deployed state, and has a first side 1A and a second side 1B opposite to each other, the first side 1A of the airbag 10 facing the occupant and used to contact the occupant, and the second side 1B of the airbag 10 used to abut against the dashboard 2 of the vehicle (in FIG. Figure 2). In the deployed state, the airbag 10 includes a main body 11 and a first fork portion 12 and a second fork portion 13 located below the main body 11. A first recessed portion 101 is provided on the main body 11. The first fork portion 12 and the second fork portion 13 define a second recessed portion 102, and both the first recessed portion 101 and the second recessed portion 102 are positioned on the first side 1A of the airbag 10. As shown in the figure, one end of each of the first fork portion 12 and the second fork portion 13 is connected to the main body 11 of the airbag 10, and the other end is spaced apart from each other in the width direction of the airbag 10 (that is, in the width direction of the vehicle). When viewed from above or above, the first fork portion 12 and the second fork portion 13 form a roughly "V" shape. It should be noted that for Figure 1 The depicted orientation of the air bag 10 is the same as that described for the air bag 10 when installed in a vehicle and deployed, that is, Figure 1 The up-down direction of the airbag 10 is consistent with the up-down direction of the vehicle. Figure 1 The width direction of the air bag 10 shown coincides with the width direction of the vehicle.
[0028] And, it can be understood that the first recessed portion 101 can protect the head of the passenger. When the vehicle is subjected to, for example, an oblique collision, due to the rapid deceleration, the passenger will still move forward a certain distance due to inertia until it contacts the deployed airbag 10, at which time the passenger's head will be accommodated in the first recessed portion 101. The airbag 10 with the first recessed portion 101 can prevent the passenger from continuing to move forward and hitting the equipment (for example, the dashboard) in the vehicle and causing injury, and at the same time, can also prevent the passenger's head from moving along the width direction of the airbag 10 and sliding off the airbag 10 and causing injury.
[0029] One method of forming the first recessed portion 101 is to apply an inward pulling force to a portion of the airbag 10 via a drawstring 14. Specifically, the airbag 1 may further include a drawstring 14, which is an inner drawstring, that is, arranged on the inner side of the airbag 10. In this example, only one drawstring 14 is provided, but this is only an example. In fact, multiple drawstrings may be provided, such as two drawstrings arranged up and down. In addition, in the case where only one drawstring 14 is provided, the two ends of the drawstring 14 are respectively connected to the first side 1A and the second side 1B of the airbag 10. In order to form the first recessed portion 101 on the main body 11 of the airbag 10, the end of the drawstring 14 fixed to the first side 1A is specifically designed as follows: the end of the drawstring 14 is fixed to the portion of the main body 11 where the first recessed portion 101 is to be formed. Of course, using a drawstring to form the first recessed portion at the main body of the airbag is merely an example, and the first recessed portion may also be formed in other ways, for example, by providing a panel having a specific shape.
[0030] In addition, the second recessed portion 102 can protect the passenger's knees. To this end, the shape of the second recessed portion 102 can be set to be a semi-circular shape, and the semi-circular second recessed portion 102 extends from one side to the other side along the width direction of the vehicle. In other words, at the passenger's knee position, it extends from one side of the passenger to the other side to accommodate both knees of the passenger in the second recessed portion 102; in order to completely surround the passenger's knees, the width of the second recessed portion 102 can be set to be greater than the width of the main body 11.
[0031] And, if Figure 1 As shown, the airbag 10 further includes a third recessed portion 103, which is located on a second side 1B of the airbag 10 opposite to the first side 1A. Figure 2 The third recessed portion 103 is described in more detail.
[0032] like Figure 2 As shown, the present application also provides an airbag assembly, which includes an instrument panel 2 and the above-mentioned airbag 1 housed in the instrument panel 2 .
[0033] In one example, in the stowed state, the airbag 10 of the airbag 1 is stowed on the lower side of the instrument panel 2, and accordingly, the gas generator is also fixed on the lower side of the instrument panel 2. The airbag 10 is also provided with a communication port at the second side 1B that communicates with the gas generator, and similarly, in the deployed state, the communication port is positioned on the lower side of the instrument panel 2. Figure 2 It can be clearly observed that the second side 1B of the airbag 10 and a part of the instrument panel 2 are opposite to each other and abut against each other, so that the third recessed portion 103 can accommodate part of the instrument panel 2. It should be noted that the airbag 10 is supported by the instrument panel 2 at the third recessed portion 103. To this end, the shape of the third recessed portion 103 can be designed to match the shape of the instrument panel 2 to ensure that the contact area between the third recessed portion 103 and the instrument panel 2 is large enough, thereby receiving sufficient support from the instrument panel 2. It can be understood that when a collision occurs, the airbag 10 is deployed, and the passenger's knee contacts the second recessed portion 102 of the airbag 10. At this time, the third recessed portion 103 is closely abutted against the instrument panel 2, and thus supports the airbag 10, which limits the movement of the second recessed portion 102. Therefore, the passenger's knee is bound by the second recessed portion 102 and is firmly restricted to almost the original position, so that the knee is protected from injury.
[0034] Also, in this example, only one gas generator may be provided, and a connecting port for communicating with the gas generator is provided on the airbag 10. At the second side 1B of the airbag 10, the gas generator inflates the airbag 10 via the connecting port provided on the airbag 10, thereby converting the airbag 10 from a stowed state to a deployed state.
[0035] Therefore, in the airbag of the present application, the airbag can be used to protect the head and knees of the passenger, and thus, multiple protection functions are integrated; moreover, in order to convert the airbag from a stored state to a deployed state, only one gas generator can be provided, and thus, the airbag of the present application can contain fewer parts, which at the same time reduces the weight of the airbag and reduces its manufacturing cost.
[0036] Figure 3 The components of the airbag according to the embodiment of the present application are schematically shown. Figure 3 An airbag according to an embodiment of the present application, and in particular, components constituting the airbag are described.
[0037] like Figure 3 As shown, first, four panels are provided, namely, a first main panel 100, a second side panel 200, a third side panel 300 and a fourth side panel 400, which are used to define a closed inner cavity of the air bag 10. In addition, a drawstring 14 is provided. In one example, the second side panel 200 and the third side panel 300 can be constructed to be identical to each other. In this construction, the air bag 10 has a uniform thickness when deployed (refer to Figure 1 As shown in Figure 3 As shown, the first main panel 100 is constructed in a long strip shape and has recessed sections at both ends thereof, which are used to form the above-mentioned second recessed portion 102; the second side panel 200 and the third side panel 300 each have a curved shape to form the above-mentioned third recessed portion 103; the fourth side panel 400 is also constructed in a long strip shape, and together with the first main panel 100, forms the above-mentioned second recessed portion 102.
[0038] Next, the first main panel 100 is marked as follows: the first main panel 100 includes a first edge 100A, a second edge 100B, a third edge 100C, and a fourth edge 104, and the first edge 100A and the fourth edge 100D are opposite to each other.
[0039] The first edge 100A and the fourth edge 100D are respectively connected to two opposite edges of the fourth side panel 400 via fixing portions. In this example, the fourth side panel 400 includes a pair of long edges and a pair of short edges, and the first edge 100A and the fourth edge 100D are respectively fixed to two opposite long edges of the fourth side panel 400.
[0040] The other two opposite edges (ie, short edges) of the fourth side panel 400 are respectively connected to the partial edges of the second side panel 200 and the third side panel 300 via fixing portions.
[0041] The remaining edge of the second side panel 200 is connected to the second edge 100B of the first main panel 100 via a fixing portion.
[0042] Furthermore, the remaining edge of the third side panel 300 is fixed to the third edge 100C of the first main panel 100 via the fixing portion.
[0043] In one example, the fixing portion may be a stitching portion or an adhesive portion.
[0044] It should be noted that the above-described method for manufacturing the airbag of the airbag of the present application is only an example, and those skilled in the art may adjust or even delete the order of the steps of the above method according to actual conditions.
[0045] Therefore, in the airbag according to the present application, the number of fabric pieces used in the airbag is relatively small, and the overall shape of the airbag (for example, the thickness of the airbag) can be changed by individually designing each fabric, thereby improving the design flexibility of the airbag and enabling the airbag of the present application to adapt to different usage environments and dashboards of different vehicles.
[0046] As mentioned above, although the exemplary embodiments of the present application have been described with reference to the accompanying drawings, the present application is not limited to the above-mentioned specific implementation methods, and the protection scope of the present application should be defined by the claims and their equivalents.
Claims
1. An airbag (1) used as a passenger airbag, comprising: The air bag (10) has an unfolded state and a stowed state. It is characterized in that In the unfolded state, the airbag (10) comprises a main body (11) and a first fork (12) and a second fork (13) located below the main body (11), the main body (11) is provided with a first recessed portion (101), the first fork (12) and the second fork (13) define a second recessed portion (102), and, The first recessed portion (101) and the second recessed portion (102) are both positioned on the first side (1A) of the airbag (10).
2. The airbag (1) according to claim 1, wherein: The air bag (10) further comprises a third recessed portion (103) which is positioned on a second side (1B) of the air bag (10) opposite to the first side (1A).
3. The airbag (1) according to claim 2, wherein: It also includes a drawstring (14) arranged on the inner side of the airbag (10), one end of the drawstring (14) is fixed to the first recessed portion (101) of the airbag (10), and the other end is fixed to the second side (1B) of the airbag (10).
4. The airbag (1) according to claim 1, wherein: The air bag (10) is defined by a first main panel (100), a second side panel (200), a third side panel (300) and a fourth side panel (400).
5. The airbag (1) according to claim 4, wherein: The first main panel (100) comprises a first edge (100A), a second edge (100B), a third edge (100C) and a fourth edge (100D), wherein the first edge (100A) and the fourth edge (100D) opposite to each other are respectively connected to two opposite edges of the fourth side panel (400) via fixing parts, the other two opposite edges of the fourth side panel (400) are respectively connected to partial edges of the second side panel (200) and the third side panel (300) via fixing parts, the remaining edge of the second side panel (200) is connected to the second edge (100B) of the first main panel (100) via fixing parts, and the remaining edge of the third side panel (300) is fixed to the third edge (100C) of the first main panel (100) via fixing parts.
6. The airbag (1) according to claim 5, wherein: The second side panel (200) and the third side panel (300) are constructed identically to each other.
7. The airbag (1) according to claim 6, wherein: It also includes a gas generator, and the air bag (10) is also provided with a communication port on the second side (1B) that communicates with the gas generator.
8. An airbag assembly, It is characterized in that The invention comprises an instrument panel (2) and a safety airbag (1) according to any one of claims 1 to 7 housed in the instrument panel (2).
9. The airbag module according to claim 8, wherein: In the deployed state, a third recessed portion (103) located on a second side (1B) of the air bag (10) opposite to the first side (1A) accommodates a portion of the instrument panel (2).
10. The airbag module according to claim 9, wherein: The air bag (10) is also provided with a communication port at the second side (1B) for communicating with the gas generator, and the communication port is positioned at the lower side of the instrument panel (2).