Reinforced air bag structure and manufacturing method thereof

Abstract

The invention provides a reinforced airbag structure and a manufacturing method thereof, and belongs to the technical field of airbag design. The enhanced air bag structure comprises an air bag and a pull piece structure arranged on the inner side of the air bag, the pull piece structure comprises a plurality of pull pieces, a network-shaped cross constraint structure is formed among the pull pieces, the air bag is divided into a plurality of independent units by the pull piece structure, and the independent units are arranged in the air bag. The connecting point of the pulling piece structure and the air bag at least comprises the maximum stress concentration point of the air bag. According to the reinforced air bag structure, the effective constraint of the air bag on each plane shape in a three-dimensional space is successfully realized by introducing a network-shaped cross constraint structure, and the stability and accuracy of the bag body structure are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of airbag design, and in particular to a reinforced airbag structure and a manufacturing method thereof. Background Art

[0002] Inflatable bladders, with their significant advantages of being lightweight, portable, and quickly deployable, have been widely used in many key areas, including protective equipment in the defense and military industry, emergency rescue equipment in the national economy, and buffer protection systems in the aerospace industry. However, during the inflation process, due to the rapid increase in internal pressure, the configuration of such bladders tends to naturally expand into a circle, which greatly limits their application in scenarios that require the ability to maintain a specific shape. In order to overcome this technical challenge, it is usually adopted to add reinforcing ribs to the outer surface of the bladder, or to arrange structures such as pulling membranes and pulling ropes inside the bladder to achieve effective constraints on the expansion and deformation of the bladder.

[0003] In order to enhance the rigidity and stability of the model, it is currently common at home and abroad to design and integrate the tensioned membrane structure (such as cable and rope system, support frame, etc.) inside the model. As a form of tensioned membrane structure, the cross-tensioned membrane structure is a structural system formed by applying tension to the membrane material and tensioning it in a cross-shaped form. It makes full use of the lightness, high strength, and flexibility of the membrane material. Through reasonable tensioning and support design, it achieves large-span coverage and stable structural performance in space. The design of these tensioned membrane structures needs to accurately match the geometry and size of the model to ensure that it can efficiently carry and disperse various externally applied loads. However, this solution also faces many challenges, such as relying on multiple factors including the physical properties of the membrane material itself (such as strength, toughness, weather resistance, etc.), the firmness and stiffness of the auxiliary support structure, the quality and precise position layout of the anchors or support components, and the complexity of the processing and manufacturing process.

[0004] Therefore, a new structure capable of achieving a stable airbag structure is needed. Summary of the invention

[0005] In order to solve the above technical problems, the present invention provides a reinforced airbag structure, which realizes the effective constraint of the airbag on various planar shapes in three-dimensional space by introducing a network-like cross-constraint structure, thereby ensuring the stability and precision of the airbag structure.

[0006] A further technical problem to be solved by the present invention is to provide a method for manufacturing the above-mentioned enhanced airbag structure.

[0007] In order to achieve the above object, the present invention adopts the following technical scheme:

[0008] A reinforced airbag structure, comprising an airbag and a pull-tab structure disposed inside the airbag, wherein the pull-tab structure comprises a plurality of pull-tabs, a network-like cross-constraint structure is formed between the plurality of pull-tabs, the pull-tab structure divides the airbag into a plurality of independent units, and the connection point between the pull-tab structure and the airbag includes at least the maximum stress concentration point of the airbag.

[0009] Wherein, a reinforcement film is arranged at the intersection position between the pull tabs, and the reinforcement film is fixedly connected to the pull tabs.

[0010] Wherein, a reinforcement film is arranged at the connection position between the pull tab and the airbag, and the reinforcement film is fixedly connected to the pull tab.

[0011] Among them, the pull tabs are detachably connected to each other; and the pull tab and the airbag are detachably connected.

[0012] Wherein, the airbag comprises a bottom film and an airbag body, the pull-tab structure is detachably connected to the bottom film, and the bottom film is fixedly connected to the airbag body by welding.

[0013] Wherein, the detachable connection is a buckle connection or a binding connection.

[0014] Among them, the Velcro interface of the base film is a rough surface, and the Velcro interface of the pull-tab structure is a hook surface.

[0015] Wherein, the pull tab is a "U"-shaped structure with a hollow interior.

[0016] Wherein, the distance between two adjacent parallel pull tabs is not greater than the minimum side length of the cross section at a position 1 / 2 of the vertical distance from the top cross section of the configuration to the bottom surface in the constraint direction.

[0017] The manufacturing method of the reinforced airbag structure comprises the following steps:

[0018] Step 1: In the XYZ three-dimensional coordinate system, the shape of the pull-tab structure and the contact position between the pull-tab structure and the airbag are calculated according to the required airbag shape;

[0019] Step 2: Cut the airbag according to the calculation results of step 1;

[0020] Step 3: According to the calculated structure in step 1, the pull tabs are spliced, placed and fixed to form a pull tab structure;

[0021] Step 4: Connect the pull-tab structure and the airbag to obtain the enhanced airbag structure.

[0022] The beneficial effects of the present invention are as follows:

[0023] (1) The enhanced airbag structure of the present invention successfully realizes the effective constraint of the airbag on various planar shapes in three-dimensional space by introducing a network-like cross-constraint structure, thereby ensuring the stability and precision of the airbag structure.

[0024] (2) The enhanced airbag structure of the present invention introduces an innovative embedded multi-layer pull-tab design. The network-like constraint structure formed between the pull-tabs and the hollow design of the pull-tabs enable the pull-tab structure to construct a multi-layer storage unit similar to a drawer inside the airbag cuboid, thereby achieving a leap from a single plane constraint to comprehensive three-dimensional space control, greatly enhancing the capacity and flexibility of the system.

[0025] (3) The outer wall of the airbag of the present invention is connected to the built-in multi-dimensional cross-stretch film by high-precision heat-sealing and welding technology to ensure the sealing and strength of the connection; the stretch films are bonded by nylon hook and loop to form a stable grid support to effectively disperse the external impact force. The multiple air chambers inside these stretch film components are interconnected and integrated into an efficient and continuous airtight space. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of one embodiment of the reinforced airbag structure of the present invention.

[0027] Figure 2 for Figure 1 1 (cross pull-tab structure) in FIG.

[0028] Figure 3 for Figure 1 2 (the connection structure between the pull tab and the airbag) is an overall schematic diagram.

[0029] Figure 4 Schematic diagram of the distance between adjacent pull tabs.

[0030] Reference numerals: 110 - first pull tab, 120 - second pull tab, 130 - third pull tab, 140 - fourth pull tab, 150 - fifth pull tab, 210 - reinforcement film, 310 - nylon hook and loop, 320 - hook and loop, 001 - inner wall of airbag. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0032] A reinforced airbag structure comprises an airbag and a pull-tab structure arranged inside the airbag, wherein the pull-tab structure comprises a plurality of pull-tabs, a cross structure is formed between the plurality of pull-tabs, and the edges of the pull-tabs are in contact with the inside of the airbag.

[0033] See also Figure 1 The enhanced airbag structure of this embodiment includes an airbag (not shown) and a pull-tab structure, wherein the pull-tab structure is composed of a plurality of pull-tabs, the positions of which are determined according to actual needs, and the plurality of pull-tabs are mutually crossed (including but not limited to vertical and inclined) to form a network-like cross-constraint structure, that is, a cross structure or other cross structures can be formed between the pull-tabs, and these cross structures form constraints on the pull-tabs, and then form constraints on the airbag. The pull-tab structure divides the airbag into a plurality of independent units, thereby realizing uniform support and reinforcement of the interior of the airbag in multi-dimensional directions. Due to its working principle, the airbag structure usually presents a morphological feature tending to be circular, so a circular airbag structure is relatively easy to realize. However, due to its characteristic of tending to be circular, when the airbag shape is a structure with many edges and corners, it is difficult for the airbag shape to maintain an angular structure. Therefore, the present invention designs a built-in pull-tab structure to effectively maintain the configuration shape of the airbag, especially the angular shape airbag.

[0034] See also Figure 1 , Figure 1 The shape of the airbag is a rectangular parallelepiped, and the pull tab structure includes a plurality of pull tabs. Specifically, the pull tab structure of this embodiment includes a first pull tab 110, a second pull tab 120, a third pull tab 130, a fourth pull tab 140 and a fifth pull tab 150, wherein the first pull tab 110 and the fifth pull tab 150 are located in a cross section (Z cross section), the second pull tab 120 and the fourth pull tab 140 are located in a cross section (Z cross section), and the third pull tab 130 is located in a horizontal cross section (XY cross section). A cross structure is formed between the first pull tab 110 and the third pull tab 130, a cross structure is formed between the second pull tab 120 and the third pull tab 130, a cross structure is formed between the fourth pull tab 140 and the third pull tab 130, and a cross structure is formed between the fifth pull tab 150 and the third pull tab 130. These cross structures simultaneously constrain the pull tabs, and these cross structures are combined to form a network-like cross-constraint structure. At the same time, from Figure 1 It can be seen that the pull-tab structure divides the interior of the airbag into multiple independent units, and these independent units are connected to ensure the internal connectivity of the airbag, that is, the pull-tab is a hollow structure.

[0035] At the same time, in order to better maintain the shape of the airbag, the pull tab structure needs to be reasonably designed. The inventor fully considered the shape and stress of the model and optimized the pull tab structure.

[0036] First, the overall shape of the pull-tab structure, including the size and shape of the pull-tab structure, needs to be determined according to the cross-sectional shape of the airbag shape. The edge of the pull-tab structure in the present invention contacts the inner side of the airbag, which is used to support and constrain the airbag. It should be noted that the pull-tab structure only constrains the middle part of the airbag, while the frame structure of the airbag that matches the airbag shape constrains the pull-tab structure. The pull-tab structure is located inside the frame structure, and the auxiliary frame structure supports and constrains the airbag, while solving the problem that the simple frame structure cannot support the middle part of the airbag. The pull-tab structure combined with the frame structure of the present invention is particularly suitable for small-sized airbags.

[0037] The second is the material of the pull-tab structure, which only needs to meet the required mechanical properties. The preferred material of the pull-tab is a flexible polymer material with relatively low elasticity.

[0038] Furthermore, in order to better maintain the shape of the airbag, the inventor believes that the connection position between the pull-tab structure and the airbag is very important. The pull-tab is connected to the airbag at the connection point between the pull-tab structure and the airbag. Here, the restraining force exerted by the pull-tab on the airbag is the largest. Therefore, the design of the connection position between the pull-tab and the airbag is very important. The connection position between the pull-tab structure and the airbag at least includes the maximum stress concentration point of the airbag (that is, the force contact position of the airbag). The design of the force contact position needs to comprehensively consider the influence of dynamic and static loads. Under static load, ensure that the structure will not undergo plastic deformation or instability when subjected to a stable load for a long time. The contact position should be set according to the direction of internal pressure expansion and optimized through finite element simulation.

[0039] Preferably, the core of the pull-tab structure of the present invention is to ensure that the spacing between adjacent parallel pull-tabs is not greater than the minimum side length of the cross section located at 1 / 2 of the vertical distance from the centroid of the top cross section of the configuration to the bottom surface in the constraint direction; especially when the airbag shape is an irregular shape structure. Such a setting can maximize the shape constraint effect of the pull-tab on the irregular airbag during the inflation process. The above method can make the airbag have a constraint effect. The distribution of the built-in pull-tabs naturally forms a cross connection on the internal cross interface. Compared with the cuboid that only constrains the positive Z surface, this three-way constraint design can significantly improve the shape retention effect of the cuboid.

[0040] See also Figure 4, especially when facing a structure with an unconventional shape, if the cross-sectional dimensions of the internal pull tabs or partitions are different or distributed in a certain proportion, it is recommended to adopt the following setting principles. Taking a four-sided pyramid structure as an example, assume that the height of the pyramid is H, the longest axis length of the bottom surface is a, and the shortest axis length is b. At this time, it is preferred to set the pull tab in the height direction of the pyramid (that is, the assumed positive direction of the Z axis). Under this layout, the minimum size of the contact surface between the pull tab and the pyramid is proportional to the shortest side b of the bottom surface. It is particularly noteworthy that the position of 1 / 2 of the pyramid height is selected as the pull tab spacing analysis point in this embodiment, because the cross section may tend to form a circumscribed ellipse in the inflated state. According to geometric principles, the area of ​​the circumscribed ellipse is ≥ Pi / 2 times the area of ​​the bottom rectangle. If the structure has no built-in pull tab during the inflation process, its shape may tend to be conical, and the height will be reduced to 2 / Pi of the original design pyramid height, that is, it is compressed to about 2 / 3 of the original design height. The pull tab serves to interrupt the continuous tension of the membrane. At this position, a built-in pull tab should be set up to play an internal tensioning role. Considering factors such as equal distribution, for convenience, the shortest side of the cross section at 1 / 2 of the pyramid height (the length of the shortest side is b / 2) is selected as an important reference value for the pull tab distribution interval in the Z-axis direction, that is, the pull tab interval d≤b / 2.

[0041] For the general form of the structure, see Figure 1 , assuming that the airbag has the following shape Figure 1 The length, width and height of the rectangular parallelepiped shown are L, W and H respectively. When designing a pull tab, you first need to determine the longest side and the shortest side, assuming L>H>W.

[0042] (1) To achieve the maximum constraint and ensure the cuboid effect, the long side constraint is first realized, that is, the constraint of the positive X plane (parallel to the YOZ plane). The long side L pull tab of the cuboid is selected as the section at 1 / 2 of the vertical distance from the centroid of the top section of the configuration to the bottom surface. The shortest side of the section is W, and the number of pull tabs is k. x k x ≥L / W;

[0043] (2) To ensure the rectangular effect, the number of pull tabs on the positive Z surface should be consistent with the number of long sides and should be set perpendicular to each other, that is, k x =k z .

[0044] (3) Number of pull tabs on the front Y side k y k y ≥H / W.

[0045] More preferably, the distance d between adjacent pull tabs is not greater than the shortest side dimension W in the cross-sectional direction, that is, d≤W, to ensure that the configuration is constrained and does not deform due to expansion.

[0046] Pull Tab This embodiment successfully realizes the effective constraint of the airbag on various planar shapes in three-dimensional space by introducing a multi-layer built-in pull tab structure design, thereby ensuring the stability and precision of the airbag structure.

[0047] The material selection of the airbag is extremely flexible, including but not limited to durable polyvinyl chloride (PVC) and other high-performance polymer materials, ensuring the combination of structural strength, durability and functionality.

[0048] Better, Figure 2 yes Figure 1 The cross structure of the middle pull tab and the pull tab ( Figure 1 See Figure 1 for an enlarged view of the Figure 2 A reinforcing film 210 is provided at the intersection of the first pull tab 110 and the third pull tab 130, and the reinforcing film 210 is fixedly connected to the pull tab. Figure 2 As shown, a reinforcing film 210 is provided at the intersection of the first pull tab 110 and the third pull tab 130, so that the connection is in a T-shaped structure and the pull tab is subjected to uniform force. The pull tab is provided with a reinforcing film to ensure the formation of a stable grid support and effectively disperse the external impact force. Specifically, as a preferred embodiment, see Figure 2 The root of the first pull tab 110 and the reinforcing film 210 form a T-shaped connection structure through heat sealing and welding, and the root of the third pull tab 130 and the reinforcing film 210 form a T-shaped connection structure through heat sealing and welding, and nylon hooks are sewn at the roots of the pull tab and the reinforcing film 210 as the connecting interface between the cross pull tabs, so that the third pull tab 130 and the reinforcing film 210 are interface-matched with the first pull tab 110 in the vertical direction of the above-mentioned pull tab by directly sewing nylon hooks 310 on the top.

[0049] Better, Figure 3 yes Figure 1 The connection position between the middle pull tab and the airbag ( Figure 1 See Figure 2 for an enlarged view of the Figure 3 A reinforcing film 210 is provided at the fixed position of the pull tab and the airbag, and the reinforcing film is fixedly connected to the pull tab. A reinforcing film is provided at the fixed position of the pull tab and the airbag to ensure the sealing and strength of the connection and improve the airtightness of the airbag. Figure 3 The airbag inner wall 001 and the second pull tab 120 are detachably connected by a hook and loop fastener 320, and a reinforcing film 210 is also provided at a fixed position. Figure 3, a nylon hook and loop interface is set on the airbag inner wall 001 by heat-sealing and welding. The specific operation is to sew the nylon hook and loop surface on the base film, and heat-seal and weld the base film to the inner side of the airbag inner wall 001 to complete the connection interface setting, so as to avoid leakage caused by the pinhole on the airbag inner wall after direct sewing; the nylon hook and loop interface are sewn on the second pull tab 120, and the airbag inner wall 001 is bonded through the hook and loop interface setting. The reinforcing film 210 is heat-sealed and welded with the second pull tab 120, and the root presents a T-shaped structure after welding. The nylon hook and loop are sewn and bonded to the airbag inner wall through flat seams above the T-shaped structure.

[0050] Preferably, the pull tabs are detachably connected to each other; and the pull tab and the airbag are detachably connected to each other.

[0051] Preferably, the detachable connection is a buckle connection or a binding connection. The buckle is preferably a nylon buckle. The connection structure between the inner wall and the pull tab and between the pull tabs in the airbag is mainly bonded with nylon buckle. The buckle connection or binding connection design of the present invention is not limited to the requirement that both the front and back sides of the material have weldability, which reduces the restrictions on the material and the constraints on the material processing properties.

[0052] Preferably, the buckle connection is a Velcro connection. In the connection structure between the airbag and the pull-tab structure, the Velcro interface of the base film is a rough surface, and the Velcro interface of the pull-tab structure is a hook surface. This arrangement can prevent the hook surface from scratching the raw material due to folding and rubbing during the processing of the airbag, thereby ensuring the integrity and service life of the airbag.

[0053] Preferably, the airbag includes a pull tab, an interface bottom film and an airbag body, wherein the pull tab structure is detachably connected to the bottom film, and the bottom film is fixedly connected to the airbag body to ensure air tightness. The built-in pull tab structure and the bottom film are connected by fixed connection (heat sealing) and detachable connection (hook-and-loop connection) to form a T-shaped reinforcement structure, thereby enhancing the longitudinal stability and load capacity of the airbag; the bottom film and the inner wall of the airbag are fixedly connected by heat sealing and welding, thereby ensuring excellent air tightness of the airbag during the connection process.

[0054] In one embodiment, the pull tab is a hollow U-shaped structure. The multiple air chambers formed by the U-shaped pull tab are interconnected and integrated into an efficient and continuous airtight space. Multiple criss-cross air chambers are arranged inside the airbag, and each air chamber is composed of a hollow pull tab, which is conducive to uniform distribution of airflow and provides manual adjustment space. Holes are set in the middle of the cross-structured pull tabs to ensure that the reserved space can be manually adjusted. This type of operation is more flexible and can avoid the processing limitations of small-sized airbags under the heat-sealed welding method, further improving the adaptability and flexibility of the airbag.

[0055] Preferably, the strength of the material used for the reinforcing film is slightly greater than the strength of the material used for the pull tab. The reinforcing film is specially selected from a material that is slightly stronger than the pull tab material and has excellent welding performance to ensure that the entire system can be more stable when subjected to external pressure or internal tension.

[0056] The manufacturing method of the reinforced airbag structure comprises the following steps:

[0057] Step 1: In the XYZ three-dimensional coordinate system, calculate the shape of the pull-tab structure and the contact position between the pull-tab structure and the airbag according to the required airbag properties; import the model of the preset pull-tab into the finite element structural analysis software, and predict the stress distribution of the inflatable structure under different load conditions with the internal pull-tab set. Use a nonlinear solver to solve, and apply self-balancing prestress under boundary conditions to displace the key points (contact areas) to the target coordinates. Use the Newton-Raphson method to search for the equilibrium path that satisfies the force balance equation. For the model deformation and stress after simulation analysis, the deformation and stress analysis of the pull-tab, and the safety margin calculation, adjust and optimize the number and arrangement of the pull-tabs. For example, if there is a high impact resistance requirement, the number of pull-tabs can be increased in the above method to ensure that the pull-tabs along the edges are evenly distributed. If there is a lightweight requirement, the number of pull-tabs needs to be reduced, and it is recommended that it should not be less than the design minimum value.

[0058] Step 2: cutting the airbag according to the calculation result of step 1; the airbag includes a base film and an airbag body, firstly the base film and the airbag body are fixedly connected by heat-sealing and welding technology, and then the nylon hook and loop surface is fixed on the base film by heat-sealing and welding;

[0059] Step 3: fix the surface hook and loop fastener at the contact position on the pull tab structure; splice and place the pull tabs according to the calculated structure in step 1 to form a pull tab structure; fix adjacent pull tabs with nylon hook and loop fastener to form a multi-dimensional air chamber structure;

[0060] Step 4: Connect the pull-tab structure and the airbag to obtain the enhanced airbag structure.

[0061] Finally, a comprehensive quality inspection and air tightness test are required. After the pull tab arrangement is determined according to the above method, the pressure resistance performance of the processed airbag model can be verified in the laboratory by breaking through the pressure resistance equipment.

[0062] The present invention is different from conventional airbags that have multiple partitions arranged in parallel at certain intervals and in a regular pattern. By introducing a cross-grid-shaped internal pull tab, supplemented by a reinforcing membrane to form a T-shaped connection unit, and combining universal nylon fasteners and other processes, a multi-dimensional constraint effect of the internal cross form is achieved, providing an internal airbag structure that is both stable and adaptable to variable external forces.

[0063] The enhanced airbag structure of the present invention introduces an innovative architecture to ensure stable support in six dimensions in the positive and negative directions of the X-axis (i.e., the front and rear directions), the positive and negative directions of the Y-axis (i.e., the left and right directions), and the positive and negative directions of the Z-axis (i.e., the up and down directions) of the rectangular parallelepiped, thereby achieving stable rectangular parallelepiped structural constraints, meeting all-round mechanical support requirements under complex three-dimensional geometric shapes, and greatly improving the overall stability and load-bearing performance of the structure.

[0064] The reinforced airbag structure of the present invention aims at the precision processing challenge of the built-in multi-layer membrane structure, and develops an advanced multi-directional tensioning system, which effectively solves the problem of synchronous and uniform stress in multiple directions inside the airbag, ensures the equilibrium state of the structure under multi-dimensional constraints, thereby significantly enhancing the overall structural performance and long-term stability.

[0065] The reinforced airbag structure of the present invention breaks the conventional strict requirements on material processing characteristics, takes into account the possible processing differences between the front and back of the material, and adopts an adaptive material interface design. No matter what material, it can be seamlessly integrated to ensure high-quality welding and assembly of the multi-layer composite structure and avoid structural defects caused by mismatch of material properties.

[0066] It will be easily understood by those skilled in the art that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0067] The above embodiments are provided for the purpose of describing the present invention only, and are not intended to limit the scope of the present invention. The scope of the present invention is defined by the appended claims. Various equivalent substitutions and modifications made without departing from the spirit and principle of the present invention should be included within the scope of the present invention.

Claims

1. A reinforced airbag structure, characterized in that: The reinforced airbag structure includes an airbag and a pull-tab structure disposed inside the airbag, the pull-tab structure includes a plurality of pull-tabs, a network-like cross-constraint structure is formed between the plurality of pull-tabs, the pull-tab structure divides the airbag into a plurality of independent units, and the connection point between the pull-tab structure and the airbag includes at least the maximum stress concentration point of the airbag.

2. The reinforced airbag structure according to claim 1, characterized in that: A reinforcement film is arranged at the intersection between the pull tabs, and the reinforcement film is fixedly connected to the pull tabs.

3. The reinforced airbag structure according to claim 1, characterized in that: A reinforcement film is provided at the connection position between the pull tab and the airbag, and the reinforcement film is fixedly connected to the pull tab.

4. The reinforced airbag structure according to claim 1, characterized in that: The pull tabs are detachably connected to each other; and the pull tabs are detachably connected to the airbag.

5. The reinforced airbag structure according to claim 1, characterized in that: The airbag comprises a bottom film and an airbag body, the pull-tab structure is detachably connected to the bottom film, and the bottom film is fixedly connected to the airbag body by welding.

6. The reinforced airbag structure according to claim 4 or 5, characterized in that: The detachable connection is a buckle connection or a binding connection.

7. The reinforced airbag structure according to claim 6, characterized in that: The Velcro interface of the base film is a fleece surface, and the Velcro interface of the pull-tab structure is a hook surface.

8. The reinforced airbag structure according to claim 1, characterized in that: The pull tab is a "U"-shaped structure with a hollow interior.

9. The reinforced airbag structure according to claim 1, characterized in that: The distance between two adjacent parallel pull tabs is not greater than the minimum side length of the cross section at a position 1 / 2 of the vertical distance from the top cross section of the configuration to the bottom surface in the restraint direction.

10. The method for manufacturing a reinforced airbag structure according to any one of claims 1 to 9, characterized in that: The steps include: Step 1: In the XYZ three-dimensional coordinate system, the shape of the pull-tab structure and the contact position between the pull-tab structure and the airbag are calculated according to the required airbag shape; Step 2: Cut the airbag according to the calculation results of step 1; Step 3: According to the calculated structure in step 1, the pull tabs are spliced, placed and fixed to form a pull tab structure; Step 4: Connect the pull-tab structure and the airbag to obtain the enhanced airbag structure.

Images