A bag-shaped tissue airbag

Abstract

The application provides a bag-shaped tissue airbag, which comprises a single-layer fabric, a double-layer fabric and a transition fabric; the single-layer fabric is formed by warp and weft layer changing of upper and lower layers of fabric; the double-layer fabric has a gap between the upper and lower layers of fabric, and the transition fabric is formed by warp layer changing of the double-layer fabric; the single-layer fabric and the double-layer fabric are connected through the transition fabric; the transition fabric comprises a first basic loop structure and a second basic loop structure, the weaving density of the first basic loop structure is higher than that of the second basic loop structure; the transition fabric comprises a first transition structure, the weaving density of a middle part of the first transition structure is lower than that of two side parts, the middle part comprises the second basic loop structure, and the two side parts comprise the first basic loop structure. The weaving densities of the middle part and the two side parts of the transition fabric are different, the opening of the transition fabric can be inhibited, the air tightness of the airbag can be better during unfolding, and the airbag can be kept in the unfolded state for a longer time.

Description

Technical Field

[0001] This application relates to the field of airbag technology, specifically to a bag-shaped tissue airbag. Background Technology

[0002] With the continuous development of science and technology, airbags play an important role in the passive safety of automobiles, saving the lives of drivers and passengers. When a vehicle collision occurs, the deployed airbags can protect the head, chest, and other parts of the driver and passengers. Therefore, people have put forward higher requirements for the performance of airbags.

[0003] One of the most important performance requirements for airbags is that the airbag pouch must have excellent sealing properties, allowing it to maintain its inflated state for a longer period during deployment. The central part of the airbag is a hollow body made of double-layered fabric; this hollow body is the inflatable area that stores the working gas. The perimeter of the hollow body is a sealed structure made of a single layer of fabric. The double-layered fabric in the middle, combined with the sealing structure around the perimeter, forms a closed airbag pouch. However, during the weaving process of transitioning from a double-layered to a single-layered structure, excessive float at the warp and weft yarn connections can occur, causing the fabric at the boundary seams to loosen. This may further lead to insufficient strength at the boundary seams or gas leakage, making it difficult to maintain the airbag pouch in its deployed state for a period of time or longer.

[0004] Therefore, the key is to ensure that the airbag can maintain sufficient airtightness and remain deployed for a longer period of time when it deploys, thus preventing the opening of the boundary seams between the inflatable area and the sealing structure. Utility Model Content

[0005] This application provides a bag-shaped airbag to address the problem in the prior art of how to prevent the opening of the boundary seam between the inflatable area and the sealing structure when the airbag is deployed, so as to ensure that the airbag has sufficient airtightness and can keep it in the deployed state for a longer period of time.

[0006] This application provides a bag-shaped tissue airbag, comprising: a single-layer fabric, a double-layer fabric, and a transition fabric;

[0007] The single-layer fabric is formed by weaving the warp and weft yarns in the upper and lower layers of the fabric through a layer-changing process; the double-layer fabric has a gap between the upper and lower layers, which is the inflatable area of ​​the airbag.

[0008] The transition fabric is a single-layer structure of a predetermined width formed by weaving the double-layer fabric through a layer-changing process, and the single-layer fabric and the double-layer fabric are connected by the transition fabric.

[0009] The transition fabric includes a first basic loop structure and a second basic loop structure, which are arranged in a loop to form the transition fabric. The weaving density of the first basic loop structure is higher than that of the second basic loop structure. The transition fabric includes a first transition structure, the weaving density of the middle part of the first transition structure is lower than that of the two side parts, the middle part includes the second basic loop structure, and the two side parts include the first basic loop structure.

[0010] Optionally, the first basic loop structure includes a 2 / 2 square flat tissue structure;

[0011] The second basic cycle structure includes at least one of the following: a first 1 / 1 double-layer plain weave structure, a 2 / 2 warp-faced plain weave structure, a modified warp-faced plain weave structure, and an 8×8 weave structure.

[0012] Optionally, the two side portions of the first transition structure include three 2 / 2 square plain weave structures, and the middle portion of the first transition structure includes four first 1 / 1 double-layer plain weave structures.

[0013] Optionally, the two sides of the first transition structure include two 2 / 2 square flat weave structures, and the middle part of the first transition structure includes two 2 / 2 warp-flat weave structures and two 8×8 weave structures, with the two 2 / 2 warp-flat weave structures located on both sides of the two 8×8 weave structures respectively.

[0014] Optionally, the two side portions of the first transition structure include two 2 / 2 square flat weave structures, and the middle portion of the first transition structure includes two variable flat weave structures and two 8×8 weave structures, with the two variable flat weave structures located on both sides of the two 8×8 weave structures respectively.

[0015] Optionally, the transition fabric further includes a second transition structure located on both sides of the first transition structure, the second transition structure including the second basic loop structure.

[0016] Optionally, the two sides of the first transition structure include a 2 / 2 square plain weave structure, the middle part of the first transition structure includes two first 1 / 1 double-layer plain weave structures, and the second transition structure includes two first 1 / 1 double-layer plain weave structures.

[0017] Optionally, the two sides of the first transition structure include a 2 / 2 square plain weave structure, the middle part of the first transition structure includes four first 1 / 1 double-layer plain weave structures, and the second transition structure includes a first 1 / 1 double-layer plain weave structure.

[0018] Optionally, the first basic loop structure includes a second 1 / 1 double-layer plain weave structure, the second basic loop structure includes a third 1 / 1 double-layer plain weave structure, and the weave density of the second 1 / 1 double-layer plain weave structure is higher than the weave density of the third 1 / 1 double-layer plain weave structure.

[0019] The two sides of the first transition structure each include a second 1 / 1 double-layer plain weave structure, and the middle part of the first transition structure includes four third 1 / 1 double-layer plain weave structures.

[0020] Optionally, it may also include a reinforcing fabric located outside the edge of the inflatable area, the reinforcing fabric having a 24×24 structure or a 48×48 structure.

[0021] Compared with the prior art, this application has the following advantages:

[0022] This application provides a bag-shaped airbag, comprising: a single-layer fabric, a double-layer fabric, and a transition fabric; the single-layer fabric is formed by weaving the warp and weft yarns of the upper and lower layers of the fabric in a layer-changing manner; the double-layer fabric has a gap between the upper and lower layers, the gap being the inflatable area of ​​the airbag; the transition fabric is a single-layer structure of a predetermined width formed by weaving the double-layer fabric in a layer-changing manner, and the single-layer fabric and the double-layer fabric are connected by the transition fabric; the transition fabric includes a first basic loop structure and a second basic loop structure, the first basic loop structure and the second basic loop structure are arranged cyclically to form the transition fabric, the weaving density of the first basic loop structure is higher than the weaving density of the second basic loop structure, the transition fabric includes a first transition structure, the weaving density of the middle part of the first transition structure is lower than the weaving density of the two side parts, the middle part includes the second basic loop structure, and the two side parts include the first basic loop structure.

[0023] This application provides a bag-shaped airbag comprising a single-layer fabric, a double-layer fabric, and a transition fabric. The single-layer and double-layer fabrics are connected by the transition fabric, which is located between them. The transition fabric includes a first basic loop structure and a second basic loop structure. The weave density of the first basic loop structure is higher than that of the second basic loop structure. The transition fabric also includes a first transition structure, where the weave density of the middle portion is lower than that of the two side portions. The middle portion includes the second basic loop structure, and the two side portions include the first basic loop structure. In other words, the middle and side portions of the transition fabric are constructed using a second basic loop structure and a first basic loop structure with different weave densities. This allows the double-layer fabric of the airbag to transition to the single-layer fabric via the transition fabric. This structure of the transition fabric reduces the variation in weave density between the double-layer and single-layer fabrics, thereby reducing stress caused by air pressure during airbag deployment and suppressing the opening of the transition fabric. This results in better airtightness during airbag deployment and allows the airbag to maintain its deployed state for a longer period. Attached Figure Description

[0024] Figure 1 This is a structural diagram of a bag-shaped tissue airbag provided in an embodiment of this application.

[0025] Figure 2 This is a cross-sectional view of the structure of the airbag provided in the embodiment of this application.

[0026] Figure 3 This is a schematic diagram of the first type of weave for the transitional fabric provided in the embodiments of this application.

[0027] Figure 4 This is a schematic diagram of the second type of weave for the transitional fabric provided in the embodiments of this application.

[0028] Figure 5 This is a schematic diagram of the third type of weave for the transitional fabric provided in the embodiments of this application.

[0029] Figure 6 This is a schematic diagram of the fourth type of weave for the transitional fabric provided in the embodiments of this application.

[0030] Figure 7 This is a schematic diagram of the fifth type of weave for the transitional fabric provided in the embodiments of this application.

[0031] Figure 8 This is a schematic diagram of the sixth type of weave for the transitional fabric provided in the embodiments of this application.

[0032] Figure 9This is a schematic diagram of the seventh type of weave for the transitional fabric provided in the embodiments of this application.

[0033] Figure 10 This is a schematic diagram of the eighth weave of the transitional fabric provided in the embodiments of this application.

[0034] Figure 11 This is a schematic diagram of the first type of weave for the reinforcing fabric provided in the embodiments of this application.

[0035] Figure 12 This is a schematic diagram of the second type of weave for the reinforcing fabric provided in the embodiments of this application.

[0036] Figure 13 This is a schematic diagram of the third type of weave for reinforcing fabrics provided in the embodiments of this application.

[0037] Figure label:

[0038] 10: Single-layer fabric; 20: Double-layer fabric; 30: Transitional fabric.

[0039] 301: First transition structure; 302: Second transition structure;

[0040] 303: First basic loop structure; 304: Second basic loop structure;

[0041] 30-a: 2 / 2 plain weave structure; 30-b: First 1 / 1 double-layer plain weave structure; 30-c: 2 / 2 warp-pattern plain weave structure; 30-d: Variational warp-pattern plain weave structure; 30-e: 8×8 weave structure; 30-f: Second 1 / 1 double-layer plain weave structure; 30-g: Third 1 / 1 double-layer plain weave structure;

[0042] 40: Reinforced fabric; 401: 24×24 structure; 402: 48×48 structure. Detailed Implementation

[0043] Many specific details are set forth in the following description to provide a full understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of this application; therefore, this application is not limited to the specific embodiments disclosed below.

[0044] In the description of this application, it should be understood that the terms "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0046] In related technologies, the middle part of an airbag is a hollow body made of double-layered fabric. This hollow body is the inflatable area of ​​the airbag and can be used to store the working gas. The perimeter of the hollow body is a sealed structure made of a single-layered fabric. The double-layered fabric in the middle, together with the sealed structure around the perimeter, forms a closed airbag bag. However, during the weaving process of the airbag fabric transitioning from a double-layered to a single-layered section, excessive float at the warp and weft yarn connection points can occur, causing the fabric structure at the boundary seams to loosen. This may further lead to insufficient strength or gas leakage at the boundary seams, making it difficult for the airbag to maintain its deployed state for a period of time or longer. When the fabric is used for vehicle airbag deployment, the yarns at the boundary seams are subjected to the instantaneous impact of high-temperature, high-pressure gas, causing a large amount of gas to leak out from the loosely woven boundary seams. This severely affects the airbag's pressure-holding capacity and may even cause the airbag body and the sealing structure at the boundary seams to rupture, leading to airbag failure.

[0047] Accordingly, this application provides a bag-shaped airbag comprising: a single-layer fabric, a double-layer fabric, and a transition fabric; the single-layer fabric is formed by weaving the warp and weft yarns of the upper and lower layers of the fabric in a layer-changing manner; the double-layer fabric has a gap between the upper and lower layers, the gap being the inflatable area of ​​the airbag; the transition fabric is a single-layer structure of a predetermined width formed by weaving the double-layer fabric in a layer-changing manner, and the single-layer fabric and the double-layer fabric are connected by the transition fabric; the transition fabric includes a first basic loop structure and a second basic loop structure, the first basic loop structure and the second basic loop structure being arranged cyclically to constitute the transition fabric, the weaving density of the first basic loop structure being higher than the weaving density of the second basic loop structure, the transition fabric including a first transition structure, the weaving density of the middle portion of the first transition structure being lower than the weaving density of the two side portions, the middle portion including the second basic loop structure, and the two side portions including the first basic loop structure.

[0048] This application provides a bag-shaped airbag comprising a single-layer fabric, a double-layer fabric, and a transition fabric. The single-layer and double-layer fabrics are connected by the transition fabric, which is located between them. The transition fabric includes a first basic loop structure and a second basic loop structure. The weave density of the first basic loop structure is higher than that of the second basic loop structure. The transition fabric also includes a first transition structure, where the weave density of the middle portion is lower than that of the two side portions. The middle portion includes the second basic loop structure, and the two side portions include the first basic loop structure. In other words, the middle and side portions of the transition fabric are constructed using a second basic loop structure and a first basic loop structure with different weave densities. This allows the double-layer fabric of the airbag to transition to the single-layer fabric via the transition fabric. Due to the structure of the transition fabric, the variation in weave density between the double-layer and single-layer fabrics is reduced, thereby reducing the stress generated by air pressure during airbag deployment. This suppresses the opening of the transition fabric, resulting in better airtightness during deployment and a longer deployment period for the airbag.

[0049] Next, the structure of the bag-shaped tissue airbag provided in this application will be described in detail with reference to the accompanying drawings.

[0050] Figure 1 This is a structural diagram of a bag-shaped tissue airbag provided in an embodiment of this application. Figure 2 This is a cross-sectional view of the structure of the airbag provided in the embodiment of this application. Figure 3 This is a schematic diagram of the first type of weave for the transitional fabric provided in the embodiments of this application. Figure 4 This is a schematic diagram of the second type of weave for the transitional fabric provided in the embodiments of this application. Figure 5 This is a schematic diagram of the third type of weave for the transitional fabric provided in the embodiments of this application. Figure 6 This is a schematic diagram of the fourth type of weave for the transitional fabric provided in the embodiments of this application. Figure 7 This is a schematic diagram of the fifth type of weave for the transitional fabric provided in the embodiments of this application. Figure 8 This is a schematic diagram of the sixth type of weave for the transitional fabric provided in the embodiments of this application. Figure 9 This is a schematic diagram of the seventh type of weave for the transitional fabric provided in the embodiments of this application. Figure 10 This is a schematic diagram of the eighth weave of the transitional fabric provided in the embodiments of this application. Figure 11 This is a schematic diagram of the first type of weave for the reinforcing fabric provided in the embodiments of this application. Figure 12 This is a schematic diagram of the second type of weave for the reinforcing fabric provided in the embodiments of this application. Figure 13 This is a schematic diagram of the third type of weave for reinforcing fabrics provided in the embodiments of this application.

[0051] This application provides a bag-shaped tissue airbag, such as Figure 1-2 As shown, the airbag includes a single-layer fabric 10, a double-layer fabric 20, and a transition fabric 30. The transition fabric 30 is located between the single-layer fabric 10 and the double-layer fabric 20, that is, the double-layer fabric 20 is transitionally connected to the single-layer fabric 10 through the transition fabric 30.

[0052] like Figure 2 As shown, the single-layer fabric 10 is formed by weaving the warp and weft yarns of the upper and lower layers of fabric through a layer-changing process. This can be understood as the single-layer fabric 10 being woven from two layers of fabric into a single-layer structure, i.e., the upper and lower layers are woven by changing the warp and weft yarns between the two layers. In other words, the warp yarns in the upper layer can be transferred to the warp yarns in the lower layer, and vice versa; or the weft yarns in the upper layer can be transferred to the weft yarns in the lower layer, and vice versa. This layer-changing process between the warp and weft yarns of the upper and lower layers forms the single-layer fabric 10.

[0053] like Figure 2 As shown, there is a gap between the upper and lower layers of the double-layer fabric 20, which is the inflatable area of ​​the airbag. This can be understood as the upper and lower layers of the double-layer fabric 20 not needing to be layered; that is, the upper and lower layers of the upper fabric 20 do not interweave, resulting in a gap between them. This gap is the inflatable area of ​​the airbag, which can be used to store working airflow. The inflatable area can be divided into multiple expansion chambers according to specific operational needs. Here, this application will not elaborate further on the division of the inflatable area.

[0054] like Figure 1-2 As shown, the transition fabric 30 is a single-layer structure of a predetermined width formed by weaving the double-layer fabric 20 through a layer-changing process. The single-layer fabric 10 and the double-layer fabric 20 are connected by the transition fabric 30. The transition fabric 30 is arranged in an annular curved shape along the edge of the double-layer fabric 20. The double-layer fabric 20 can form a closed airbag bag through the annular curved structure of the transition fabric 30 at its edge. The working airflow of the airbag is stored in the closed airbag bag. In order to maintain the airbag bag in the deployed state for a period of time or longer, the opening of the transition fabric can be suppressed to reduce the loss of working airflow in the airbag bag, thereby ensuring that the airbag bag has good airtightness.

[0055] The transition fabric 30 is also a single-layer structure of a preset width formed by the layering of the upper and lower layers of the double-layer fabric 20. It can be understood that the layering of the upper and lower layers of the transition fabric 30 is formed through a basic cyclic structure with different weaving densities, allowing for a smooth and even transition of the airbag from the double-layer fabric 20 to the transition fabric 30. It should be noted that the single-layer structure formed by the transition fabric 30 is not strictly a single layer; there are still small gaps between the upper and lower layers. These gaps are formed by the layering process and are intermittent within the single-layer structure. Therefore, the transition structure can be understood as a single-layer structure. The preset width of the transition fabric 30 can be determined according to specific operational needs; it can be set to 7mm, 3mm, or other preset widths, as long as they meet industry requirements.

[0056] like Figure 3-10 As shown, the transition fabric includes a first basic loop structure 303 and a second basic loop structure 304. The first basic loop structure 303 and the second basic loop structure 304 are arranged in a loop to form the transition fabric. The weaving density of the first basic loop structure 303 is higher than that of the second basic loop structure 304. The transition fabric includes a first transition structure 301. The weaving density of the middle part of the first transition structure 301 is lower than that of the two side parts. The middle part includes the second basic loop structure 304, and the two side parts include the first basic loop structure 303.

[0057] Specifically, the transition fabric includes a first basic loop structure 303 and a second basic loop structure 304. This can be understood as the transition fabric being formed by cyclically arranging the first basic loop structure 303 and the second basic loop structure 304. Furthermore, the first basic loop structure 303 and the second basic loop structure 304 are different; the weaving density of the first basic loop structure 303 is higher than that of the second basic loop structure 304. A higher weaving density results in relatively poorer air permeability and better air tightness. In other words, the air permeability of the first basic loop structure 303 is worse than that of the second basic loop structure 304; that is, a higher weaving density corresponds to better air tightness of the fabric.

[0058] It should be noted that weaving density refers to the number of yarns per unit length. In this embodiment, the weaving density can be radial density, such as along the selvage direction, or weft density, such as perpendicular to the selvage direction. There are no specific restrictions on the specific values ​​of the weaving density of the first basic loop structure 303 and the weaving density of the second basic loop structure 304, as long as the weaving density of the first basic loop structure 303 is higher than that of the second basic loop structure 304.

[0059] The transition fabric includes a first transition structure 301, the weaving density of the middle part of the first transition structure 301 is lower than the weaving density of the two sides, that is, the first transition structure 301 is composed of basic loop structures with different weaving densities, that is, the middle part of the first transition structure 301 includes a second basic loop structure 304, and the two sides of the first transition structure 301 include a first basic loop structure 303, so that the weaving density of the middle part of the transition structure is lower than the weaving density of its two sides.

[0060] This can be understood as the transition fabric including a first transition structure 301, which is composed of a first basic loop structure 303 and a second basic loop structure 304 with different weaving densities. The first basic loop structure 303 is located on both sides of the transition fabric 30, and the second basic loop structure 304 is located in the middle of the transition fabric, making the weaving density of the two sides of the transition fabric higher than that of the middle part. Because the transition fabric is located between the double-layer fabric and the single-layer fabric, one side of the two sides of the first transition structure 301 is connected to the double-layer fabric. Since the two sides are the first basic loop structure 303, their weaving density is relatively high, resulting in poor air permeability and hindering airflow leakage. This suppresses the opening of the transition fabric, allowing the airbag to achieve better airtightness during deployment and maintain its deployed state for a longer period.

[0061] Specifically, the first basic cycle structure 303 includes a 2 / 2 plain weave structure 30-a; the second basic cycle structure 304 includes at least one of a first 1 / 1 double-layer plain weave structure 30-b, a 2 / 2 warp-faced plain weave structure 30-c, a varied warp-faced plain weave structure 30-d, and an 8×8 weave structure 30-e.

[0062] The 2 / 2 square plain weave structure 30-a means that every two weft yarns, the warp yarn sinks down and passes through one weft yarn, and this set of operations is repeated in the same way along the width of the fabric to form a continuous pattern. Of course, the same principle also applies to the weft yarns relative to the warp yarns.

[0063] The first 1 / 1 double-layer plain weave structure 30-b, where 1 / 1 refers to the interlacing pattern of plain weave. Plain weave is one of the most basic weave methods, characterized by each warp yarn (vertical yarn) passing over a weft yarn (horizontal yarn) and then under the next weft yarn, forming an alternating "up-down" pattern. Double-layer plain weave refers to a special fabric structure that includes two independent but interconnected layers of plain weave fabric. These two layers can be connected in several ways:

[0064] Direct connection: Two layers of fabric can be directly connected together by yarns at certain points. These connection points can be regularly distributed or adjusted according to design requirements.

[0065] Intermediate layer connection: Sometimes additional yarns or specific weaving techniques are used to join two plain weave fabrics together without compromising their individual structural characteristics.

[0066] The first 1 / 1 double-layer plain weave structure can be simply understood as two independent but interconnected layers that form an alternating pattern of "one up and one down" in the plain weave.

[0067] 2 / 2 warp-reinforced plain weave (30-c) is a specific fabric weave structure, belonging to the category of variation weaves, specifically based on variations of plain weave. 2 / 2 describes the specific pattern or path of yarn interlacing. For a 2 / 2 weave, each warp yarn will continuously cross under two weft yarns and then over two more weft yarns, forming a repeating pattern. Warp-reinforced plain weave refers to a weave where the warp yarns are primarily visible on the fabric surface, while the weft yarns are relatively less visible. This structure makes the fabric surface appear more like it is composed of warp yarns.

[0068] The specific weave of 2 / 2 warp-weighted plain weave is as follows: In a 2 / 2 warp-weighted plain weave, each warp yarn passes under two consecutive weft yarns and then passes over two more weft yarns. This weave creates a twill effect on the fabric surface, but because of the emphasis on the warp yarns, visually, the fabric surface is primarily composed of warp yarn texture. Compared to ordinary plain weave, 2 / 2 warp-weighted plain weave offers better strength and abrasion resistance while maintaining a certain degree of flexibility and comfort.

[0069] 30-d modified plain weave is a variation of the traditional plain weave method that creates unique fabric appearance and properties by changing the basic weave pattern, yarn type, or color configuration. Plain weave includes warp-plain and weft-plain weave. Warp-plain weave primarily displays the warp yarns on the fabric surface, with fewer weft yarns. Weft-plain weave, on the other hand, displays more of the weft yarns.

[0070] Since the weaving density of the first basic loop structure 303 is higher than that of the second basic loop structure 304, and the first basic loop structure 303 includes a 2 / 2 plain weave structure 30-a, while the second basic loop structure 304 includes at least one of a first 1 / 1 double-layer plain weave structure 30-b, a 2 / 2 warp-knit plain weave structure 30-c, a varied warp-knit plain weave structure 30-d, and an 8×8 weave structure 30-e, it can be understood that the second basic loop structure 304 can be a first 1 / 1 double-layer plain weave structure 30-b, a 2 / 2 warp-knit plain weave structure 30-c, a varied warp-knit plain weave structure 30-d, and an 8×8 weave structure 30-e. The weaving density of the 2 / 2 plain weave structure 30-a is higher than that of the first 1 / 1 double-layer plain weave structure 30-b, 2 / 2 warp-knitted plain weave structure 30-c, modified plain weave structure 30-d, and 8×8 weave structure 30-e. It can be any one, any two, or any three of these structures, or a combination of all four structures.

[0071] like Figure 3 As shown, the two side portions of the first transition structure 301 include three 2 / 2 square plain weave structures 30-a, and the middle portion of the first transition structure 301 includes four first 1 / 1 double-layer plain weave structures 30-b. That is, the two side portions of the first transition structure 301 are composed of a first basic loop structure 303, and the middle portion of the first transition structure 301 is composed of a second basic loop structure 304. Specifically, the two side portions of the first transition structure 301, i.e., the first basic loop structure 303, include three 2 / 2 square plain weave structures 30-a, and the middle portion, i.e., the second basic loop structure 304, includes four first 1 / 1 double-layer plain weave structures 30-b. In other words, the middle portion of the first transition structure 301 consists of four first 1 / 1 double-layer plain weave structures 30-b. It should be noted that these four first 1 / 1 double-layer plain weave structures 30-b have the same structure. This can be understood as follows: the middle portion of the first transition structure 301 is constructed using four identical first 1 / 1 double-layer plain weave structures 30-b or four different first 1 / 1 double-layer plain weave structures 30-b. On each side of the middle portion are three 2 / 2 square plain weave structures, resulting in different weave densities in the transition fabric. This allows the double-layer fabric of the airbag to transition to a single-layer fabric via the transition fabric. This structure of the transition fabric reduces the stress generated by air pressure during airbag deployment, thus inhibiting the opening of the transition fabric and enabling the airbag to achieve better airtightness during deployment and maintain its deployed state for a longer period.

[0072] like Figure 4-5As shown, the two sides of the first transition structure 301 include two 2 / 2 square flat weave structures 30-a, and the middle part of the first transition structure includes two 2 / 2 double flat weave structures 30-c and two 8×8 weave structures 30-e, with the two 2 / 2 double flat weave structures 30-c located on both sides of the two 8×8 weave structures 30-e. In other words, the first transition structure 301 shown includes a first basic circulation structure 303 and a second basic circulation structure 304. The first basic circulation structure 303 is located on both sides, and the second basic circulation structure 304 is located in the middle. Specifically, the two sides of the first transition structure 301, i.e., the first basic circulation structure 303, include two 2 / 2 square flat weave structures 30-a. The middle part of the first transition structure 301, i.e., the second basic circulation structure 304, includes two 2 / 2 warp-flat weave structures 30-c and two 8×8 weave structures 30-e. The two 2 / 2 warp-flat weave structures 30-c are located on both sides of the two 8×8 weave structures 30-e, i.e., the two 8×8 weave structures are connected. A 2 / 2 warp-flat weave structure 30-c is provided on both sides of the two 8×8 weave structures, thus forming the middle part of the first transition structure 301. Two 2 / 2 square flat weave structures 30-a are provided on each side of the middle part to form the first transition structure 301.

[0073] It should be noted that the 8×8 weave structure 30-e is a mixed weave, such as... Figure 4 and Figure 5 The diagram shows two different 8×8 weave structures. This mixed weave is formed by at least two weave structures, such as plain weave, twill weave, satin weave, rib weave, etc. Because there are many methods of mixed weave, they will not be listed here. It can be understood that this mixed weave is an 8×8 weave structure 30-e formed by two or more basic structures. This 8×8 weave structure 30-e is the smallest loop unit of the mixed weave.

[0074] like Figure 6As shown, the two side portions of the first transition structure 301 include two 2 / 2 square flat weave structures 30-a, and the middle portion of the first transition structure 301 includes two variable flat weave structures 30-d and two 8×8 weave structures 30-e, with the two variable flat weave structures 30-d located on both sides of the two 8×8 weave structures 30-e. In other words, the middle portion of the first transition structure 301, i.e., the second basic circulation structure 304, includes two variable flat weave structures 30-d and two 8×8 weave structures 30-e, with the two variable flat weave structures 30-d located on both sides of the two 8×8 weave structures. Two 2 / 2 square flat weave structures 30-a are provided on each side of the middle portion. This can be understood as the first basic circulation structure 303 being located on both sides of the second basic circulation structure 304, i.e., the first basic circulation structure 303 includes two 2 / 2 square flat weave structures 30-a, together constituting the first transition structure 301. It should be noted that the 8×8 weave structure 30-e is a mixed weave, and the 8×8 weave structure 30-e is the smallest repeating unit of the mixed weave.

[0075] The transition fabric further includes a second transition structure 302 located on both sides of the first transition structure 301, the second transition structure 302 including the second basic loop structure 304. It can be understood that the transition fabric includes the first transition structure 301 and the second transition structure 302, and the second transition structure 302 is located on both sides of the first transition structure 301. The second transition structure 302 includes the second basic loop structure 304, which includes at least one of a first 1 / 1 double-layer plain weave structure 30-b, a 2 / 2 warp-knit plain weave structure 30-c, a varied warp-knit plain weave structure 30-d, and an 8×8 weave structure 30-e. That is, the second transition structure 302 includes one, two, three, or four of the following: the first 1 / 1 double-layer plain weave structure 30-b, the 2 / 2 warp-knit plain weave structure 30-c, the varied warp-knit plain weave structure 30-d, and the 8×8 weave structure 30-e.

[0076] like Figure 7As shown, the two side portions of the first transition structure 301, i.e., the first basic loop structure 303, include a 2 / 2 plain weave structure 30-a. The middle portion of the first transition structure 301, i.e., the second basic loop structure 304, includes two first 1 / 1 double-layer plain weave structures 30-b. The second transition structure 302 includes two first 1 / 1 double-layer plain weave structures 30-b. Specifically, the transition fabric includes a first transition structure 301 and a second transition structure 302. The second transition structure 302 is located on both sides of the first transition structure 301. The middle portion of the first transition structure 301 includes two first 1 / 1 double-layer plain weave structures 30-b, and a 2 / 2 plain weave structure 30-a is provided on each side of the two first 1 / 1 double-layer plain weave structures 30-b. A second transition structure 302 is provided on each side of the first transition structure 301, i.e., two first 1 / 1 double-layer plain weave structures 30-b are respectively provided on the sides of the two 2 / 2 plain weave structures 30-a. It should be noted that the 2 / 2 square plain weave structure 30-a has two first 1 / 1 double-layer plain weave structures on its sides. The structures of the two first 1 / 1 double-layer plain weave structures 30-b can be the same or different.

[0077] like Figure 8 As shown, the two sides of the first transition structure 301 include a 2 / 2 square plain weave structure 30-a, the middle part of the first transition structure 301 includes four first 1 / 1 double-layer plain weave structures 30-b, and the second transition structure 302 includes a first 1 / 1 double-layer plain weave structure 30-b. Specifically, the transition fabric 30 includes a first transition structure 301 and a second transition structure 302, with the second transition structure 302 located on both sides of the first transition structure 301. The middle part of the first transition structure 301, i.e., the second basic cycle structure 304, includes four first 1 / 1 double-layer plain weave structures 30-b. It should be noted that these four first 1 / 1 double-layer plain weave structures 30-b include two different structures. Two first 1 / 1 double-layer plain weave structures 30-b with the same structure are connected, and two other first 1 / 1 double-layer plain weave structures 30-b with the other two identical structures are located on both sides of the two connected first 1 / 1 double-layer plain weave structures 30-b. Of course, it is also possible that all four first 1 / 1 double-layer plain weave structures 30-b are the same, or that all four first 1 / 1 double-layer plain weave structures 30-b are different. A 2 / 2 square plain weave structure 30-a is provided on both sides of the middle section, i.e., the first basic loop structure 303, together forming the first transition structure 301. A first 1 / 1 double-layer plain weave structure 30-b is provided on both sides of the first transition structure 301.

[0078] Furthermore, the first basic loop structure 303 includes a second 1 / 1 double-layer plain weave structure 30-f, the second basic loop structure 304 includes a third 1 / 1 double-layer plain weave structure 30-g, and the weaving density of the second 1 / 1 double-layer plain weave structure 30-f is higher than the weaving density of the third 1 / 1 double-layer plain weave structure 30-g; the two sides of the first transition structure 301 each include one second 1 / 1 double-layer plain weave structure 30-f, and the middle part of the first transition structure each includes four third 1 / 1 double-layer plain weave structures 30-g.

[0079] Specifically, such as Figure 9 As shown, the transition fabric includes a first basic repeat structure 303 and a second basic repeat structure 304. The first basic repeat structure 303 includes a second 1 / 1 double-layer plain weave structure 30-f, and the second basic repeat structure 304 includes a third 1 / 1 double-layer plain weave structure. It can be understood that the transition fabric is composed of the second 1 / 1 double-layer plain weave structure 30-f and the third 1 / 1 double-layer plain weave structure 30-g. Furthermore, the weaving density of the second 1 / 1 double-layer plain weave structure 30-f is higher than that of the third 1 / 1 double-layer plain weave structure 30-g. It should be noted that the second 1 / 1 double-layer plain weave structure 30-f and the third 1 / 1 double-layer plain weave structure 30-g may be the same as or different from the first 1 / 1 double-layer plain weave structure, but their structures are different.

[0080] like Figure 9-10 As shown, the transition fabric includes a first basic loop structure 303 and a second basic loop structure 304. The first basic loop structure 303 is located on both sides of the second basic loop structure 304, that is, the transition fabric includes a first transition structure 301. The two sides of the first transition structure 301, that is, the first basic loop structure 303, are second 1 / 1 double-layer plain weave structures 30-f. The middle part of the first transition structure 301, that is, the second basic loop structure 304, includes four third 1 / 1 double-layer plain weave structures 30-g. The four third 1 / 1 double-layer plain weave structures 30-g have different structures or can be the same.

[0081] It can be understood that the middle and side parts of the transition fabric are constructed by a second basic loop structure 304 and a first basic loop structure 303 with different weaving densities, which can allow the double-layer fabric of the airbag to transition to a single-layer fabric through the transition fabric. Due to this structure of the transition fabric, the change in weaving density between the double-layer fabric and the single-layer fabric can be reduced, thereby reducing the stress generated by air pressure when the airbag is deployed, suppressing the opening of the transition fabric, so that the airbag can achieve better airtightness when deployed, and can also maintain the deployed state for a longer period of time.

[0082] like Figure 1 As shown, the bag-shaped airbag provided in this application also includes reinforcing fabric 40, which is located on the outer edge of the inflatable area, such as... Figure 11-12 As shown, the reinforcing fabric includes a 24×24 structure 401. It should be noted that the reinforcing fabric can further enhance the sewing strength of this area to improve its sealing performance, and the 24×24 structure 401 is the minimum basic loop structure of the reinforcing fabric.

[0083] like Figure 13 As shown, the reinforcing fabric can also be a 48×48 structure 402, which can be a structure that is proportionally enlarged from a 24×24 structure 401. The 48×48 structure 402 has a larger loop and is more tightly woven. Therefore, the 48×48 structure 402 has greater sewing strength and better sealing performance.

[0084] In addition, a sealing coating may be applied to the outer surface of the double-layer fabric and / or the transition fabric and / or the reinforcing fabric to further enhance the airtightness of the airbag.

[0085] It should be noted that although several structures, components, or units for implementing the relevant functions have been mentioned in the detailed description above, this division is not mandatory. In fact, according to the specific embodiments of this application, the features and functions of two or more structures, components, or units described above can be embodied in one structure, component, or unit. Conversely, the features and functions of one structure, component, or unit described above can be further divided and embodied by multiple components, structures, or units.

[0086] Furthermore, although the various components of the components or apparatus in this application and the mounting arrangements between them are described in a specific order in the accompanying drawings, this does not require or imply that the components or apparatus must be designed according to that specific component or mounting arrangement, or that all the components shown must be included to achieve the desired result. Additional or alternative components may be omitted, multiple components may be combined into one component to achieve the corresponding function, and / or a component may be decomposed into multiple components to achieve the corresponding function, etc.

[0087] Although this application discloses preferred embodiments as described above, it is not intended to limit this application. Any person skilled in the art can make possible changes and modifications without departing from the spirit and scope of this application. Therefore, the scope of protection of this application should be determined by the scope defined in the claims of this application.

Claims

1. A bag-type tissue airbag, characterized by, include: Single-layer fabrics, double-layer fabrics, and transitional fabrics; The single-layer fabric is formed by weaving the warp and weft yarns in the upper and lower layers of the fabric through a layer-changing process; the double-layer fabric has a gap between the upper and lower layers, which is the inflatable area of ​​the airbag. The transition fabric is a single-layer structure of a predetermined width formed by weaving the double-layer fabric through a layer-changing process, and the single-layer fabric and the double-layer fabric are connected by the transition fabric. The transition fabric includes a first basic loop structure and a second basic loop structure, which are arranged in a loop to form the transition fabric. The weaving density of the first basic loop structure is higher than that of the second basic loop structure. The transition fabric includes a first transition structure, the weaving density of the middle part of the first transition structure is lower than that of the two side parts, the middle part includes the second basic loop structure, and the two side parts include the first basic loop structure.

2. The bag-like tissue airbag according to claim 1, characterized in that The first basic cyclic structure includes a 2 / 2 square flat tissue structure; The second basic cycle structure includes at least one of the following: a first 1 / 1 double-layer plain weave structure, a 2 / 2 warp-faced plain weave structure, a modified warp-faced plain weave structure, and an 8×8 weave structure.

3. The bag-like tissue airbag according to claim 2, characterized in that The two sides of the first transition structure include three 2 / 2 square plain weave structures, and the middle part of the first transition structure includes four first 1 / 1 double-layer plain weave structures.

4. The bag-like tissue airbag according to claim 2, characterized in that, The two sides of the first transition structure include two 2 / 2 square flat weave structures, and the middle part of the first transition structure includes two 2 / 2 warp-flat weave structures and two 8×8 weave structures, with the two 2 / 2 warp-flat weave structures located on both sides of the two 8×8 weave structures respectively.

5. The bag-like tissue airbag according to claim 2, characterized in that, The two sides of the first transition structure include two 2 / 2 square flat weave structures, and the middle part of the first transition structure includes two variable flat weave structures and two 8×8 weave structures, with the two variable flat weave structures located on both sides of the two 8×8 weave structures respectively.

6. The bag-like tissue airbag according to claim 2, characterized in that The transition fabric also includes a second transition structure located on both sides of the first transition structure, the second transition structure including the second basic loop structure.

7. The bag-like tissue airbag according to claim 6, characterized in that The two sides of the first transition structure include a 2 / 2 square plain weave structure, the middle part of the first transition structure includes two first 1 / 1 double-layer plain weave structures, and the second transition structure includes two first 1 / 1 double-layer plain weave structures.

8. The bag-shaped tissue airbag according to claim 6, characterized in that, The two sides of the first transition structure include a 2 / 2 square plain weave structure, the middle part of the first transition structure includes four first 1 / 1 double-layer plain weave structures, and the second transition structure includes a first 1 / 1 double-layer plain weave structure.

9. The bag-shaped tissue airbag according to claim 1, characterized in that, The first basic loop structure includes a second 1 / 1 double-layer plain weave structure, and the second basic loop structure includes a third 1 / 1 double-layer plain weave structure. The weave density of the second 1 / 1 double-layer plain weave structure is higher than that of the third 1 / 1 double-layer plain weave structure. The two sides of the first transition structure each include a second 1 / 1 double-layer plain weave structure, and the middle part of the first transition structure includes four third 1 / 1 double-layer plain weave structures.

10. The bag-shaped tissue airbag according to claim 1, characterized in that, It also includes a reinforcing fabric located outside the edge of the inflatable area, the reinforcing fabric having a 24×24 structure or a 48×48 structure.

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