Airbag assembly and curtain airbag
By designing an independent protective structure in the airbag bag assembly, the problem of the airbag bag contacting the window glass during the deployment process is solved, the protection effect is improved and the compact packaging of the airbag bag is maintained, and it is suitable for interior designs of vehicles with limited space.
Patent Information
- Application Number
- CN202422201877.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-09
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-09-09
AI Technical Summary
The existing airbag system is prone to contact with the window glass during the airbag bag deployment, resulting in damage to the airbag bag or gas leakage. The existing protective structure design increases the packaging volume of the airbag bag and affects the deployment process.
An airbag bag assembly is designed, including an airbag bag tied with a flexible cut piece, an ear hanging, a mounting bracket and an independent protective structure. The protective structure is folded independently and wound on the outside of the airbag bag when it is unfolded, avoiding direct sewing to the airbag bag, thus not increasing the packaging volume of the airbag bag.
It effectively prevents the airbag bag from contacting hard objects during the deployment process, improves the protection effect of the airbag system, and maintains the compact packaging of the airbag bag, suitable for interior designs with limited space.
Smart Images
Figure CN223014572U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of airbag, and particularly to an airbag assembly and a curtain airbag. Background Art
[0002] When a vehicle collides, the airbag system rapidly deploys an airbag to provide cushioning and protection for the vehicle occupants. However, during the deployment of the airbag, the airbag may come into contact with hard objects such as window glass. Especially in the case of broken glass, sharp glass fragments may pierce the airbag, resulting in damage to the airbag or gas leakage, thereby reducing the protection effect of the airbag.
[0003] In the prior art, some airbag systems protect the airbag by providing a protective structure outside the airbag. However, existing designs usually require directly sewing the protective structure to the airbag body or its support structure, which not only increases the packaging volume of the airbag assembly but also may affect the normal deployment of the airbag. In addition, the connection method between the existing protective structure and the airbag usually does not take into account the space limitation of the vehicle interior structure and the mechanical characteristics of the airbag deployment, thus potentially bringing additional risks during the airbag deployment process.
[0004] It should be noted that the information disclosed in the above background art section is only used to enhance the understanding of the background of the utility model, and thus may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the Utility Model
[0005] In view of this, the utility model provides an airbag assembly, which can provide effective protection during the airbag deployment process without significantly increasing the packaging volume of the airbag, prevent the airbag from coming into contact with hard objects such as window glass, and thus avoid damage to the airbag due to reasons such as broken glass.
[0006] One aspect of the utility model provides an airbag assembly, including an airbag bundled by a flexible cut piece, an ear connected to the airbag, and a mounting bracket. One end of the mounting bracket passes through the ear and extends between the ear and the airbag, and the other end of the mounting bracket is exposed outside the ear. The airbag assembly further includes a protective structure. The first end of the protective structure, one end of the flexible cut piece, and the ear are connected. The body of the folded protective structure is wound around the outside of the airbag and the flexible cut piece. The second end of the protective structure is fixedly connected to the second end of the flexible cut piece, and the second end of the flexible cut piece is separably connected to the mounting bracket.
[0007] In some embodiments, a disconnect structure is provided on the body of the flexible cut piece. When the deployment force received by the airbag assembly reaches the first disconnect threshold of the flexible cut piece, the disconnect structure ruptures, releasing the airbag bundled by the flexible cut piece.
[0008] In some embodiments, when the deployment force of the airbag assembly reaches the second disconnection threshold of the flexible cut piece, the second end of the flexible cut piece disconnects from the mounting bracket, and the protection structure is released and deployed between the window and the airbag.
[0009] In some embodiments, the second disconnection threshold is greater than the first disconnection threshold.
[0010] In some embodiments, folding marks are provided on the body of the protection structure.
[0011] In some embodiments, when the length of the protection structure does not exceed the first preset value, there is one folding mark, and the protection structure is folded according to a first folding pattern including one folding mark.
[0012] In some embodiments, when the length of the protection structure exceeds the first preset value, there are at least two folding marks, and the protection structure is folded according to a second folding pattern including two folding marks.
[0013] In some embodiments, the first end of the protection structure and the first end of the flexible cut piece are respectively sewn to the hanging ear, the second end of the protection structure and the second end of the flexible cut piece are sewn, and the second end of the flexible cut piece hooks the mounting bracket.
[0014] In some embodiments, the airbag assembly further includes a tape that bundles the outside of the protection structure, and the bundling position of the tape avoids the bundling position of the flexible cut piece along the axial direction of the airbag assembly.
[0015] Another aspect of the present utility model provides a curtain airbag, and the curtain airbag is configured with an airbag assembly as in any of the above embodiments.
[0016] The beneficial effects of the present utility model compared with the prior art at least include:
[0017] By providing a protection structure outside the airbag, it effectively avoids the contact between the airbag and hard objects such as window glass during the deployment process. Especially when the glass breaks, it prevents the airbag from being punctured by sharp glass fragments, thereby improving the overall protection effect of the airbag system.
[0018] The protection structure is independently folded and wound outside the airbag and the flexible cut piece, and is not directly sewn and wound together with the airbag. Therefore, it does not significantly increase the packaging volume of the airbag itself, making the airbag assembly more compact during installation and storage, and suitable for the interior design of vehicles with limited space. And since the protection structure is not wound together with the airbag, it does not affect the deployment process of the airbag and ensures the smooth deployment of the airbag.
[0019] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present utility model. Description of the Drawings
[0020] The accompanying drawings herein are incorporated into and constitute a part of this specification, showing embodiments in accordance with the present utility model, and are used together with the specification to explain the principles of the present utility model. Obviously, the accompanying drawings in the following description are only some embodiments of the present utility model, and those of ordinary skill in the art can obtain other accompanying drawings based on these drawings without creative efforts.
[0021] Figure 1 Schematic cross-sectional structure diagram showing the airbag assembly in a bundled state in an embodiment of the present utility model;
[0022] Figure 2 Schematic cross-sectional structure diagram showing the airbag assembly in a first deployed state in an embodiment of the present utility model;
[0023] Figure 3 Schematic cross-sectional structure diagram showing the airbag assembly in a second deployed state in an embodiment of the present utility model;
[0024] Figure 4 Schematic front unfolded structure diagram showing the flexible cut piece in an embodiment of the present utility model;
[0025] Figure 5 Schematic side cross-sectional structure diagram showing the flexible cut piece in an embodiment of the present utility model;
[0026] Figure 6 Schematic cross-sectional structure diagram showing the first folding pattern of the protection structure with one folding mark in an embodiment of the present utility model;
[0027] Figure 7 Schematic cross-sectional structure diagram showing the second folding pattern of the protection structure with two folding marks in an embodiment of the present utility model;
[0028] Figure 8 Schematic assembly structure diagram showing the airbag assembly bundled with tape in an embodiment of the present utility model;
[0029] Figure 9 Schematic assembly structure diagram showing the curtain airbag in an embodiment of the present utility model;
[0030] Figure 10 Schematic assembly structure diagram showing the airbag assembly of the curtain airbag in a bundled state in an embodiment of the present utility model;
[0031] Figure 11 Schematic assembly structure diagram showing the airbag assembly of the curtain airbag in a first deployed state in an embodiment of the present utility model;
[0032] Figure 12Shows a schematic assembly structure diagram of the airbag assembly of the curtain airbag in the second deployment state in the embodiments of the present utility model.
[0033] Reference numerals:
[0034] 100 Airbag assembly 110 Hanging ear
[0035] 120 Airbag 130 Flexible cut piece
[0036] 131 First end of the flexible cut piece 132 Second end of the flexible cut piece
[0037] End of the second end of the flexible cut piece
[0038] 132a End 132b Binding strap
[0039] 133 Disconnection structure 134 Sewing line
[0040] 140 Protection structure 141 First end of the protection structure
[0041] 142 Second end of the protection structure 143 First folding mark
[0042] 144 Second folding mark 200 Mounting bracket
[0043] 300 Adhesive tape Detailed implementation manners
[0044] Example embodiments will now be described more fully with reference to the accompanying drawings. However, the example embodiments can be implemented in various forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided so that this utility model will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. Like reference numerals in the figures denote the same or similar structures, and thus their repetitive description will be omitted.
[0045] The terms "first", "second", and the like used in the specific description do not denote any order, quantity, or importance, but are only used to distinguish different components. The orientation or positional relationship indicated by terms such as "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and it is only for the convenience of description and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present utility model. In addition, in the description of the present utility model, when it is said that a device is "connected" to another device, this includes not only the case of direct connection, but also the case of indirect connection through other elements.
[0046] It should be noted that, without conflict, the features in the embodiments of the present utility model and those in different embodiments can be combined with each other.
[0047] As shown Figure 1 in the figure, an embodiment of the present utility model provides an airbag assembly 100, which includes an airbag 120 bundled by a flexible cut piece 130, an ear 110 connected to the airbag 120, and a mounting bracket 200. The airbag 120 has a bundled state when not in use and an unfolded state when in use. The flexible cut piece 130 is used to maintain the bundled state of the airbag 120. The ear 110 is used to realize the connection between the mounting bracket 200 and the airbag 120, so as to mount the airbag 120 on the vehicle body through the mounting bracket 200. Specifically, one end of the mounting bracket 200 passes through the ear 110 and extends between the ear 110 and the airbag 120, and the other end of the mounting bracket 200 is exposed outside the ear 110 for connecting to the vehicle body. The airbag assembly 100 further includes a protection structure 140. The first end 141 of the protection structure and the first end 131 of the flexible cut piece are respectively connected to one side of the ear 110. The body of the folded protection structure 140 is wound around the outside of the airbag 120 and the flexible cut piece 130. The second end 142 of the protection structure and the second end 132 of the flexible cut piece are fixedly connected, and the second end 132 of the flexible cut piece is detachably connected to the mounting bracket 200.
[0048] Combined Figure 1 it can be seen that the protection structure 140 is folded independently outside the airbag 120, and the folded protection structure 140 is wound around the outside of the airbag 120 and the flexible cut piece 130, rather than adopting the traditional method of directly sewing the protection structure 140 to the airbag 120 and winding them together. In the present utility model, during the unfolding process of the airbag 120, the protection structure 140 provides a protection effect on the outside of the airbag 120 to prevent the airbag 120 from being damaged by hard objects. The protection structure 140 is not directly sewn to the airbag 120, but is independently folded and wound, so that the airbag 120 can maintain a smaller volume during folding and storage. The design of the present application makes the airbag assembly 100 more compact during installation and storage, effectively reducing the space occupation, and is particularly suitable for the situation where the internal space of the vehicle is limited. Through the independently arranged protection structure 140, the unfolding process of the airbag 120 is not affected, so that the airbag 120 can be smoothly unfolded when the vehicle collides, ensuring the normal realization of the function of the airbag assembly 100, thereby improving the overall safety performance of the vehicle.
[0049] In this embodiment, the airbag 120 has a bundled state and a deployed state. The flexible piece 130 maintains the connection state of the second end 132 with the mounting bracket 200 under normal conditions, so as to stably bundle the airbag 120 with the flexible piece 130 and keep the airbag 120 in the bundled state. When subjected to a deployment force (such as the pressure from the inside to the outside generated when the airbag 120 inflates and expands), the second end 132 of the flexible piece separates from the mounting bracket 200, releasing the bundling effect on the airbag 120, so that the airbag 120 can inflate and deploy, enabling the airbag 120 to enter the deployed state and releasing the airbag 120. Therefore, by separably connecting the second end 132 of the flexible piece to the mounting bracket 200, the airbag 120 can be switched between the bundled state and the deployed state.
[0050] In this embodiment, the flexible piece 130 can be made of one or more of a variety of materials including non-woven fabric (PP). These materials need to have sufficient strength and flexibility to ensure effective binding of the airbag 120 and break and release the airbag 120 under appropriate conditions. The protection structure 140 can be a single-layer or multi-layer structure. Fabrics with wear-resistant and cut-resistant properties can be selected for the material, such as aramid, ultra-high molecular weight polyethylene (UHMWPE) or other high-strength fiber materials. Other suitable materials can also be selected according to specific needs. The winding and connection methods of the protection structure 140 can be adjusted according to the internal structure of the vehicle and the design requirements of the airbag system. The length of the protection structure 140 can be adjusted according to actual needs. By providing the protection structure 140 outside the airbag 120, the present utility model significantly improves the anti-damage ability of the airbag 120 during the deployment process. Especially when the window glass is broken, it effectively prevents the glass fragments from piercing the airbag 120. In addition, the connection structure between the protection structure 140 and the flexible piece 130 is simple in design. The design of the protection structure 140 does not require additional modification or re-design of the airbag 120. Therefore, the existing manufacturing process of the airbag 120 does not need to be changed. In addition, since the installation of the protection structure 140 only involves wrapping and fixing outside the airbag 120, the simplicity of the installation process is maintained and it can be seamlessly connected with the existing assembly process.
[0051] In some alternative embodiments, the flexible piece 130 includes a break structure 133 disposed on the body of the flexible piece 130, where the body of the flexible piece 130 refers to the main portion between its first end 131 and second end 132. By providing the break structure 133 on the body of the flexible piece 130, local breakage and separation of the flexible piece 130 can be achieved, facilitating adjustment and adaptation during assembly or use, thereby enhancing the flexibility and adaptability of the product. The design of the break structure 133 helps simplify the assembly process, reduce production and maintenance costs, while improving the versatility and scope of application of the product. In addition, the break structure 133 can also serve as a stress buffer to prevent the flexible piece 130 from breaking as a whole due to excessive unfolding force during use, thus extending the service life of the airbag assembly.
[0052] In some embodiments, the break structure 133 includes any one of the following: an intermittent notch extending along the width direction of the flexible piece 130; a continuous cut extending along the width direction of the flexible piece 130; an intermittent tangent extending along the width direction of the flexible piece 130. By introducing structures such as preset cuts, break points, or easily breakable tangents on the body of the flexible piece 130, the flexible piece 130 can be broken in a predetermined manner and position when subjected to an external force.
[0053] As described above, the airbag 120 has a bundled state constrained by the flexible piece 130 and an unfolded state when released. In embodiments provided with the break structure 133, the unfolded state of the airbag 120 can be further divided into a first unfolded state and a second unfolded state. The transition of the airbag 120 from the bundled state to the first unfolded state is achieved by the breakage of the break structure 133 of the flexible piece 130, while the transition of the airbag 120 from the first unfolded state to the second unfolded state is achieved by the separation of the second end 132 of the flexible piece from the mounting bracket 200. The following combines Figure 2 and Figure 3 to further introduce the state transition process of the airbag 120.
[0054] As Figure 2As shown, when the deployment force applied to the airbag bag assembly 100 (such as the pressure applied to the outside by the inflation of the airbag bag 120) reaches the first disconnection threshold of the flexible panel 130, the disconnection structure 133 will break, thereby releasing the airbag bag 120 bound by the flexible panel 130, so that the airbag bag 120 enters the first deployment state from the bound state. The first disconnection threshold in this embodiment refers to the critical force value at which the flexible panel 130 can break when the deployment force reaches a certain level. Since the protective structure 140 is arranged on the outside of the airbag bag 120 and the flexible panel 130, when the airbag bag 120 is deployed and enters the first deployment state, the protective structure 140 is stretched open. By providing the disconnection structure 133 on the flexible sheet 130, the timing of the breakage of the flexible sheet 130 can be precisely controlled, ensuring that during the deployment process, the airbag bag 120 can remain in a controlled state rather than being fully deployed immediately, thereby ensuring that the airbag bag 120 will not be over-deployed during deployment, and will not cause impact to the occupants or vehicle structure due to over-rapid deployment, thereby avoiding secondary injuries that may be caused by over-rapid or excessive deployment of the airbag bag 120, improving the safety of the occupants, and avoiding unnecessary risks. While providing the occupant protection function after the airbag bag 120 is deployed, the protective structure 140 provides the most complete protection for the airbag bag 120. In addition, the design of the first disconnection threshold can be adjusted according to different usage requirements and safety standards to meet the needs of different vehicles and application scenarios.
[0055] like Figure 3 As shown, as the airbag 120 is further inflated, the deployment force of the airbag assembly 100 is further increased. When the second disconnection threshold of the flexible panel 130 is reached (the second disconnection threshold is greater than the first disconnection threshold), the second end 132 of the flexible panel is disconnected from the mounting bracket 200, releasing the protective structure 140 and making it deploy and cover the outside of the airbag 120 on one side, so that the airbag 120 is completely released and enters the second deployment state, that is, the protective structure 140 is released and deployed between the vehicle window and the airbag. This implementation solves the problem that when the airbag 120 is fully deployed, the protective structure 140 is deployed from one side, for example, Figure 3 As for the problem of damage by external objects on the left side shown in the figure, it can be understood that the airbag bag assembly 100 can also be configured accordingly on the right side to protect the airbag bag 120. Especially in the case of a side collision accident of a vehicle, it is necessary to prevent sharp objects such as broken window glass from piercing the airbag bag 120, causing gas leakage and protection failure. In the present utility model, the second disconnection threshold refers to the critical value at which the second end 132 of the flexible sheet can break when the deployment force reaches a critical point greater than the first disconnection threshold. The utility model can release the protective structure 140 while the airbag bag 120 is fully deployed.
[0056] As described above, in this embodiment, an intermediate state, i.e., the first deployment state, is added between the bundled state and the fully deployed second deployment state of the airbag 120. The first deployment state means that the airbag 120 is still under certain constraints of the protection structure 140 after deployment. During the stage when the airbag 120 enters the first deployment state from the bundled state, the partially deployed airbag 120 can provide preliminary buffer protection, especially suitable for protecting the occupant in a minor collision or contact. This design enables the airbag 120 to still provide a certain protection function without being fully deployed, ensuring effective protection for the occupant in low to medium-intensity collisions. During the stage when the airbag 120 enters the second deployment state from the first deployment state, the second end 132 of the flexible piece is disconnected from the mounting bracket 200, releasing the protection structure 140 and allowing the airbag 120 to fully deploy and cover a larger area, thereby providing more comprehensive protection for the occupant. Through this staged deployment control, the airbag assembly 100 can not only provide appropriate protection under different collision conditions but also avoid the over-deployment of the airbag 120 under unnecessary circumstances. This multi-level protection design enables the airbag assembly 100 to adapt to different collision situations and provide more comprehensive passenger protection.
[0057] In some embodiments, the first end 141 of the protection structure and the first end 131 of the flexible piece are stably sewn to the lug 110, the second end 142 of the protection structure and the second end 132 of the flexible piece are sewn, and the second end 132 of the flexible piece hooks the mounting bracket 200. The second end 142 of the protection structure and the second end 132 of the flexible piece are sewn to the lug 110 at the sewing line 134 as shown in Figure 4 and Figure 5 so that the protection structure 140 and the flexible piece 130 are tightly connected at the second end, ensuring that they can maintain a consistent stress state during deployment and use. The second end 132 of the flexible piece includes two binding straps 132b connected end to end. The two binding straps 132b respectively press on the parts of the lug 110 located on both sides of the mounting bracket 200, and the end 132a of the second end of the flexible piece hooks the mounting bracket 200. This fixing method ensures that when the flexible piece 130 is stressed and disconnected, the protection structure 140 can be released and deployed synchronously with the second end 132 of the flexible piece, thereby effectively protecting the airbag 120.
[0058] In some embodiments, folding marks are provided on the body of the protection structure 140 to guide the operator or manufacturing machine to fold along it. The folding marks are specific identifiers or lines provided on the body of the protection structure 140, which can be visually visible marks such as printed lines, indentations, or guiding lines generated by other means (such as hot stamping, laser marking). These marks clearly indicate how the protection structure 140 should be folded. During the manufacturing process, the folding marks provide a clear folding path for the operator or automated equipment, ensuring that the protection structure 140 can be precisely folded according to the design requirements. This setting method reduces the error of the protection structure 140 during the folding process by providing a clear folding reference, improves product consistency and folding quality, and ensures that each airbag assembly 100 can meet the expected performance standards during manufacturing. Setting the folding marks can significantly simplify the folding process of the protection structure 140. For an automated production line, the folding marks provide a clear path guidance for the machine, reducing complex detection and adjustment steps and improving production efficiency. In manual operation, the folding marks can also help the operator quickly find the correct folding position, reducing the operation difficulty and training cost. In the folded state, the protection structure 140 usually presents a compact folded shape. For ease of illustration, its shape can be compared to a long strip folded into several layers, or similar to a small package folded into a section. Its specific shape depends on the actual design and folding method of the protection structure 140. In the unfolded state, the protection structure 140 will unfold into a larger plane, covering a part of the airbag 120. The shape of the protection structure 140 in the unfolded state is usually rectangular or close to rectangular, and is specifically designed according to the performance requirements of the vehicle collision test and the needs of the airbag 120 it covers. The "length" of the protection structure 140 refers to the dimension of the protection structure 140 in the unfolded state along the unfolding direction of the airbag 120. The length of the protection structure 140 is the actual measured length when the protection structure 140 is fully unfolded, and the width of the protection structure 140 is set as required.
[0059] In some embodiments, when the length of the protection structure 140 does not exceed a first preset value, the folding mark is set to one, and the protection structure 140 is folded according to a first folding pattern including one folding mark. As Figure 6As shown, it is a schematic cross-sectional view of a first folding pattern of a protection structure 140 including a first folding mark 143. The folding mark is a line or identifier provided on the protection structure 140 for guiding how to correctly fold the protection structure 140. Referring to one folding mark, namely the first folding mark 143, can ensure the consistency of each folding of the protection structure 140. This helps to standardize the production process and reduce human errors. By folding along the first folding mark 143, it can be ensured that the protection structure 140 folds along a predetermined path during folding and finally completes the folding according to the first folding pattern. The presence of the folding mark enables the operator or machine to accurately operate along the marked line during the folding process, ensuring that the folded shape meets the design requirements. As Figure 6 The first folding pattern shown refers to a specific shape or structure formed after the protection structure 140 is folded according to the first folding mark 143. In this embodiment, the first folding pattern is generally to make the protection structure occupy the smallest space after folding, while being able to quickly restore its predetermined shape when unfolded. Through a reasonable folding path design, the first folding pattern can effectively reduce the stacking thickness of the protection structure, enabling it to fit more closely to the airbag bag 120, thereby ensuring that the protection structure 140 will not be affected by the folding shape when unfolded and can be smoothly unfolded and cover the required airbag area.
[0060] In some embodiments, when the length of the protection structure 140 exceeds a first preset value, there are at least two folding marks, and the protection structure 140 is folded according to a second folding pattern including two folding marks. As Figure 7As shown, it is a schematic cross-sectional view of the second folding pattern of the protection structure 140 including the first folding mark 143 and the second folding mark 144. When the length of the protection structure 140 exceeds the first preset value, folding according to a single folding mark is not sufficient to ensure the compactness and stability of the protection structure 140 after folding. Therefore, by increasing the number of folding marks (at least two), the protection structure 140 can be better guided to perform multiple folds to form a multi-layer structure, so that it can still maintain a compact folded state even when the length is relatively large. The first folding mark 143 and the second folding mark 144 respectively indicate different folding paths, and the combination of these paths forms the second folding pattern. This pattern aims to compress the long strip-shaped protection structure to a suitable size through multi-layer folding, reduce the volume and ensure the stability of the folded form. The second folding pattern is formed by folding along the first folding mark 143 and the second folding mark 144. This multi-layer structure not only improves the compactness of the protection structure 140, but also reduces the internal stress of the protection structure 140 in the folded state through evenly distributed folding marks, preventing the protection structure 140 from accidentally unfolding during storage or transportation. In the case where the length of the protection structure 140 exceeds the first preset value, the increase in folding marks is not only to simplify the folding operation, but also to physically achieve effective control of the long strip-shaped fabric. By setting at least two folding marks and adopting the second folding pattern, the compact and uniform folding of the protection fabric can be realized, the volume can be compressed to the maximum extent and the stability can be ensured, avoiding difficulties in unfolding or inconvenient storage caused by excessive length.
[0061] In the present utility model, the first preset value is set to 250 mm, which plays an important role in standardizing the folding operation, improving production flexibility, and ensuring the product function and safety. It can be understood that although 250 mm is a specific example value in the present utility model, in actual applications, this preset value can be adjusted according to the requirements of different products, production processes, or specific application scenarios. For example, in some special application scenarios, a longer or shorter protection structure 140 may be required, so the preset value can be adjusted accordingly to ensure the rationality and effectiveness of the folding operation. By reasonably setting and adjusting this preset value, the present invention can achieve the best folding effect of the protection structure in different application scenarios, thereby improving the overall performance of the airbag assembly 100.
[0062] In some embodiments, such as Figure 8The airbag assembly 100 shown also includes a tape 300 that bundles the outside of the protection structure 140. The tape 300 is used to bundle the protection structure 140 so that when the airbag 120 is not deployed, the protection structure 140 can maintain a compact state, preventing the protection structure 140 from accidentally coming apart before the airbag 120 is deployed, and ensuring that the entire airbag assembly 100 remains stable during installation and transportation. The flexible piece 130 needs to rupture or come loose when the airbag 120 is deployed, thereby releasing the airbag 120. If the position of the tape 300 overlaps or is too close to the flexible piece 130, it may affect the normal rupture of the flexible piece 130, resulting in the airbag 120 not being able to deploy smoothly. Therefore, the bundling position of the tape 300 axially avoids the bundling position of the flexible piece 130 along the airbag assembly 100 to ensure that the flexible piece 130 can rupture or be released normally when the airbag 120 is deployed.
[0063] An embodiment of the present invention also provides a curtain airbag (CAB: Curtain Air Bag), as Figure 9 shown, the curtain airbag is configured with the airbag assembly 100 described in any of the above embodiments. In this embodiment, the curtain airbag adopts the airbag assembly 100 as described above. The mounting bracket 200 is used to fix the airbag assembly 100 to the roof or side structure of the vehicle. The mounting bracket 200 usually includes a plurality of mounting holes or slots to facilitate docking and fixing with the structural components of the vehicle. After the airbag assembly 100 is fixed, when the vehicle collides, the mounting bracket 200 can ensure that the airbag assembly 100 is stably installed in the predetermined position, avoiding displacement or detachment of the airbag due to the collision. In the curtain airbag, the bundling effect of the tape 300 further optimizes the deployment sequence of the airbag. Since the installation position of the airbag assembly 100 in the vehicle is usually relatively narrow, the bundling of the tape 300 can keep the airbag in a compact form before deployment, reducing the occupied space and contributing to more effective installation and fixing.
[0064] As Figure 10The figure shows a schematic diagram of the assembly structure of the airbag bag assembly of the curtain airbag in a bundled state. This embodiment is described by taking an airbag bag assembly 100 with a protective structure 140 arranged at the front seat of the vehicle as an example. In this embodiment, the airbag bag assembly 100 is installed on the upper side of the front seat of the vehicle, close to the roof, through a mounting bracket 200 to ensure that the airbag bag 120 can be quickly deployed and provide protection when the vehicle is involved in a side collision or rollover accident. The airbag bag 120 is bundled in the initial state by the flexible sheet 130 to maintain a compact shape for easy installation into the vehicle structure. The protective structure 140 is coated on the outside of the airbag bag 120 and the flexible sheet 130. Its design not only provides additional physical protection for the airbag bag 120, but also plays a control and restraint role in the deployment process of the airbag bag 120. When the vehicle is in normal driving state, the airbag assembly 100 is in a bundled state, wherein the flexible panel 130 is connected to the hanging ear 110 and the mounting bracket 200 at both ends thereof, and the compactness of the airbag 120 is maintained by the bundled force. Figure 11 As shown, the airbag assembly 100 is triggered, and the airbag 120 is applied with a deployment force such as inflation. The disconnection structure 133 of the flexible panel 130 ruptures when reaching a first disconnection threshold, partially releasing the airbag 120 and partially opening the protection structure 140, which can prevent the protection structure 140 from being stuck by the vehicle interior when deployed, and put the airbag 120 into the first deployment state. Subsequently, as the airbag 120 further expands, the second end 132 of the flexible panel ruptures when reaching a second disconnection threshold, as shown in FIG. Figure 12 As shown, the flexible panel 130 is detached from the hanging ear 110, and the protection structure 140 is fully deployed, finally releasing the airbag bag 120, making it fully deployed to cover the side area of the front seat and provide comprehensive lateral protection.
[0065] The working process of the curtain airbag equipped with the airbag bag assembly 100 can refer to the working process description of the airbag bag assembly 100 above, and the curtain airbag can achieve all the technical effects of the above-mentioned airbag bag assembly 100, which will not be repeated here.
[0066] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.
Claims
1. An airbag bag assembly, comprising an airbag bag bundled by a flexible cut piece, a hanging ear connected to the airbag bag, and a mounting bracket, wherein one end of the mounting bracket passes through the hanging ear and extends between the hanging ear and the airbag bag, and the other end of the mounting bracket is exposed outside the hanging ear, characterized in that: The airbag bag assembly also includes a protective structure, a first end of the protective structure, one end of the flexible panel and the hanging ear are connected, the folded body of the protective structure is wrapped around the outside of the airbag bag and the flexible panel, the second end of the protective structure and the second end of the flexible panel are fixedly connected, and the second end of the flexible panel is detachably connected to the mounting bracket.
2. The air bag assembly according to claim 1, characterized in that: The body of the flexible sheet is provided with a breaking structure. When the deployment force applied to the airbag bag assembly reaches a first breaking threshold of the flexible sheet, the breaking structure breaks to release the airbag bag bound by the flexible sheet.
3. The air bag assembly according to claim 2, characterized in that: When the deployment force of the airbag bag assembly reaches the second disconnection threshold of the flexible panel, the second end of the flexible panel is disconnected from the mounting bracket, and the protection structure is released and deployed between the vehicle window and the airbag bag.
4. The air bag assembly according to claim 3, characterized in that: The second disconnection threshold is greater than the first disconnection threshold.
5. The air bag assembly according to claim 1, characterized in that: A folding mark is arranged on the body of the protection structure.
6. The air bag assembly according to claim 5, characterized in that: When the length of the protective structure does not exceed a first preset value, there is one folding mark, and the protective structure is folded according to a first folding pattern including one folding mark.
7. The air bag assembly according to claim 5, characterized in that: When the length of the protection structure exceeds a first preset value, there are at least two folding marks, and the protection structure is folded according to a second folding pattern including the two folding marks.
8. The air bag assembly according to claim 1, characterized in that: The first end of the protective structure and the first end of the flexible sheet are sewn to the hanging ear respectively, the second end of the protective structure and the second end of the flexible sheet are sewn to the second end of the flexible sheet, and the second end of the flexible sheet hangs the mounting bracket.
9. The air bag assembly according to claim 1, characterized in that: The airbag bag assembly further comprises an adhesive tape, which is used to bundle the outer side of the protection structure, and the bundling position of the adhesive tape along the axial direction of the airbag bag assembly avoids the bundling position of the flexible panel.
10. A curtain airbag, characterized in that: The curtain airbag is equipped with an airbag bag assembly as described in any one of claims 1-9.