Airbag assembly for a vehicle, stitching method for an airbag assembly, and vehicle

Abstract

This invention discloses an airbag assembly for a vehicle, a sewing method for the airbag assembly, and a vehicle, particularly a vehicle equipped with an intelligent driving mode. The airbag assembly for the vehicle includes: an airbag body having a connecting portion connected to a fixed structure and having a cavity formed inside; and a fastening member disposed within the cavity and having a first connecting portion and a second connecting portion. The first connecting portion is connected to the fixed structure and / or the connecting portion, and the second connecting portion is sewn to the airbag body, forming a continuous and closed sewn joint. The airbag assembly for vehicles designed according to this invention simplifies the sewing process, effectively improves the load transfer efficiency during airbag inflation, provides more stable and balanced support for the airbag body, and thus enhances the protection performance for occupants.

Description

Technical Field

[0001] This invention relates to the field of airbag technology, and in particular to an airbag assembly for a vehicle, a stitching method for the airbag assembly, and a vehicle. Background Technology

[0002] In related technologies, vehicle front airbags are typically installed behind the dashboard. When triggered, the airbag rapidly inflates and deploys in front of the dashboard, reaching the occupants to make contact and protect them. To control the airbag's deployment posture, a tether is usually installed to connect it to the airbag body. The tether's pulling action on the airbag body creates a specific protective area. In some existing technologies, the seam between the tether and the airbag body is a semi-closed shape with an opening. This uneven stress distribution at the seam's ends makes it prone to tearing, resulting in poor airbag durability. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of this invention is to provide an airbag assembly for vehicles. The airbag assembly for vehicles designed according to this invention simplifies the sewing process, effectively improves the load transfer efficiency during airbag inflation, and provides more stable and balanced support for the airbag body, thereby enhancing the protection performance for occupants.

[0004] The present invention also proposes a suturing method for the above-mentioned airbag assembly.

[0005] The present invention also proposes a vehicle having the above-described airbag assembly for a vehicle.

[0006] The vehicle includes a fixed structure. The airbag assembly for the vehicle according to the present invention includes: an airbag body having a connecting portion connected to the fixed structure and having a cavity formed therein; and a fastening member disposed in the cavity and having a first connecting portion and a second connecting portion, the first connecting portion being connected to the fixed structure and / or the connecting portion, and the second connecting portion being sewn to the airbag body and forming a continuous and closed sewn joint.

[0007] According to the airbag assembly for vehicles of the present invention, the first connecting portion of the tether is connected to the fixed structure of the vehicle and / or the connecting portion of the airbag body to reliably transmit the tensile force to the vehicle body; the second connecting portion of the tether is integrally connected to the airbag body through a continuous and closed sewn joint, so that the tensile force is evenly distributed along the sewn joint, thereby optimizing the force path between the tether and the airbag body, improving the force transmission efficiency and overall stability, and improving the connection strength between the tether and the airbag body as well as the durability and reliability of the airbag assembly.

[0008] According to some embodiments of the present invention, the path of the sewing joint is at least partially consistent with the outline of the outer edge of the second connecting part corresponding to the outer periphery; and / or, the sewing joint is circular, elliptical, rectangular or shield-shaped.

[0009] According to some embodiments of the present invention, the sewing joint is shield-shaped and includes an upper sewing area and a lower sewing area connected to each other, wherein the width of the upper sewing area is greater than the width of the lower sewing area.

[0010] According to some embodiments of the present invention, the tethering member is provided with the first connecting portion at both ends in the extending direction, and the second connecting portion is located between the two first connecting portions; and / or, the width of the tethering member gradually increases in the direction from the first connecting portion to the second connecting portion.

[0011] According to some embodiments of the present invention, the two first connecting portions are arranged to at least partially overlap, or the two first connecting portions are arranged at intervals.

[0012] According to some embodiments of the present invention, the fastening member is provided with a first connecting portion and a second connecting portion at both ends in the extending direction, the fastening member is constructed to be at least two, and the sewing joint connects the second connecting portions of at least two of the fastening members.

[0013] According to some embodiments of the present invention, the second connecting portions of at least two of the fasteners at least partially overlap to form a first overlapping area, and the sewn joint is located at least in the first overlapping area.

[0014] According to some embodiments of the present invention, an airbag assembly for a vehicle further includes: a reinforcing sheet that partially overlaps the airbag body and the second connecting portion in the thickness direction to form a second overlapping area, wherein the sewing joint is located in the second overlapping area to sewing and fix the reinforcing sheet, the airbag body and the second connecting portion together.

[0015] According to some embodiments of the present invention, the reinforcing sheet, the airbag body, and the second connecting part are sewn together in the same sewing process.

[0016] According to some embodiments of the present invention, when the airbag assembly is inflated, the area enclosed by the sewn joint is recessed into the outer surface of the airbag body to form a receiving area suitable for accommodating the occupant's face.

[0017] According to some embodiments of the present invention, the airbag body includes a front panel and a side panel, the front panel being adapted to contact the occupant's face, and the side panel being disposed on the side of the front panel and together with the front panel forming the cavity.

[0018] According to some embodiments of the present invention, the second connecting portion is connected to the front panel and / or the side panel via the sewing joint.

[0019] The following is a brief description of a suturing method for an airbag assembly according to a second aspect embodiment of the present invention.

[0020] The sewing method according to the present invention is used for the airbag assembly described in any of the above embodiments, and includes: stacking the second connecting portion of the tethering member with the airbag body to form an overlapping area; sewing the overlapping area of ​​the second connecting portion and the airbag body along a predetermined trajectory in a single sewing operation, such that the sewing thread passes through the airbag body and the second connecting portion simultaneously to form a closed sewing joint to fix the airbag body and the second connecting portion together.

[0021] The sewing method according to the present invention is used in the airbag assembly described in any of the above embodiments, the airbag assembly further comprising a reinforcing sheet, the sewing method comprising: stacking the airbag body and the reinforcing sheet such that the airbag body and the reinforcing sheet partially overlap in the thickness direction; stacking the second connecting portion of the fastener on the overlapping area of ​​the airbag body and the reinforcing sheet to form a second overlapping area; and sewing the overlapping area along a predetermined trajectory in a single sewing operation, such that the sewing thread simultaneously passes through the reinforcing sheet, the airbag body and the second connecting portion to form a closed sewing joint, thereby fixing the reinforcing sheet, the airbag body and the second connecting portion together.

[0022] The sewing method for airbag components according to the present invention can improve the structural stability of the airbag components, make the airbag components stable under stress, reduce sewing processes, reduce production time and manufacturing costs, and improve production efficiency.

[0023] The vehicle according to a third aspect embodiment of the present invention is briefly described below.

[0024] The vehicle according to the present invention includes an airbag assembly for a vehicle as described in any of the above embodiments, or includes a stitching method for an airbag assembly as described in any of the above embodiments. Because the vehicle according to the present invention is equipped with an airbag assembly for a vehicle as described in the above embodiments or includes a stitching method for an airbag assembly as described in the above embodiments, the vehicle has better safety performance.

[0025] In summary, according to the airbag assembly for vehicles of the present invention, the first connecting portion of the tether is connected to the fixed structure of the vehicle and / or the connecting portion of the airbag body to reliably transmit the tensile force to the vehicle body; the second connecting portion of the tether is integrally connected to the airbag body through a continuous and closed sewn joint, so that the tensile force is evenly distributed along the sewn joint, thereby optimizing the force path between the tether and the airbag body, improving the force transmission efficiency and overall stability, and improving the connection strength between the tether and the airbag body as well as the durability and reliability of the airbag assembly.

[0026] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0027] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a structural diagram of an airbag assembly for a vehicle according to an embodiment of the present invention.

[0028] Figure 2 This is a top view of an airbag assembly for a vehicle according to an embodiment of the present invention.

[0029] Figure 3 yes Figure 2 The center circle shows a magnified view of point A.

[0030] Figure 4 This is a side view of a tethering element according to some embodiments of the present invention.

[0031] Figure 5 This is a side view of the tethering element according to other embodiments of the present invention.

[0032] Figure 6 This is a structural diagram of the tethering component according to the first embodiment of the present invention.

[0033] Figure 7 This is a structural diagram of the tethering component according to the second embodiment of the present invention.

[0034] Figure 8 This is a structural diagram of the tethering component according to the third embodiment of the present invention.

[0035] Figure 9 This is a structural diagram of the tethering component according to the fourth embodiment of the present invention.

[0036] Figure label: 1. Airbag assembly; 2. Occupants; 20. Airbag body; 20a. Connecting part; 20b. Cavity; 21. Front panel; 21a. Receiving area; 22. Side panel; 23. Reinforcing piece; 200. Second overlapping area; 30. Fastening element; 31. First connecting part; 32. Second connecting part; 32a. Sewing joint; 32b. Upper sewing area; 32c. Lower sewing area; 33. First section; 34. Second section; 300. First overlapping area. Detailed Implementation

[0037] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0038] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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 invention.

[0039] 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 one or more of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0040] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0041] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0042] In related technologies, vehicle front airbags are typically installed behind the dashboard. When triggered, the airbag rapidly inflates and deploys in front of the dashboard, reaching the occupants to make contact and protect them. To control the airbag's deployment posture, a tether is usually installed to connect it to the airbag body. The tether's pulling action on the airbag body creates a specific protective area. In some existing technologies, the seam between the tether and the airbag body is a semi-closed shape with an opening. This uneven stress distribution at the seam's ends makes it prone to tearing, resulting in poor airbag durability.

[0043] The following is for reference. Figures 1-9 An airbag assembly 1 for a vehicle according to an embodiment of the present invention is described.

[0044] like Figures 1-2 As shown, the vehicle includes a fixed structure. The airbag assembly 1 for the vehicle according to the present invention includes: an airbag body 20 and a fastener 30. The airbag body 20 has a connecting portion 20a connected to the fixed structure and has a cavity 20b formed inside. The fastener 30 is disposed in the cavity 20b and has a first connecting portion 31 and a second connecting portion 32. The first connecting portion 31 is connected to the fixed structure and / or the connecting portion 20a. The second connecting portion 32 is connected to the airbag body 20 by sewing and has a continuous and closed sewing joint portion 32a.

[0045] Specifically, the airbag assembly 1 is used in the vehicle and is generally installed behind the dashboard by a fixed structure. After the airbag body 20 is triggered, it quickly inflates and expands to the front of the dashboard to reach the screen, so as to contact the occupant 2 and protect the occupant 2.

[0046] Here, the fixing structure is used to fix the airbag assembly 1 to the vehicle body. It can be configured as a mounting bracket or a gas generator housing. The fixing structure can be fixedly connected to the dashboard crossbeam or the internal structure of the dashboard. The fixing structure is used to connect the airbag body 20 and the fastener 30.

[0047] The airbag body 20 is mounted on a fixed structure and folds back behind the dashboard when not in use. The first connecting portion 31 of the fastener 30 is connected to the fixed structure, and the second connecting portion 32 is sewn to the airbag body 20 to form a continuous and closed sewn joint 32a. Here, the second connecting portion 32 overlaps with the airbag body 20, and the sewing thread is sewn along the overlapping area of ​​the second connecting portion 32 and the airbag body 20 to form the sewn joint 32a. The sewn joint 32a is continuous and closed, that is, the sewing thread intersects at the starting point and the ending point to form a complete closed shape without any lateral openings or interruptions. The shape of the sewn joint 32a is designed in this way so that the fastener 30 and the airbag body 20 are fixedly connected through a single sewing process, achieving integrated sewing. Furthermore, since the sewing joint 32a has a continuous and closed shape, the sewing thread forms a complete force path along the entire connection edge without any open ends. When the airbag body 20 is inflated and subjected to force, the tension is evenly distributed along the annular seam without significant stress concentration, which can reduce the risk of seam tearing and improve the durability and reliability of the airbag body 20.

[0048] During the manufacturing process of airbag assembly 1, the second connecting part 32 can be stacked with the airbag body 20, and sewing can be performed along a predetermined track using a sewing device, so that the sewing thread passes through the second connecting part 32 and is sewn to the airbag body 20 to form a continuous and closed sewing joint 32a. At the same time, the first connecting part 31 of the fastener 30 also needs to be connected to the fixing structure, and then the airbag body 20 is assembled with the fixing structure to complete the manufacturing of airbag assembly 1.

[0049] According to the airbag assembly 1 for a vehicle of the present invention, the first connecting portion 31 of the fastener 30 is connected to the fixed structure of the vehicle and / or the connecting portion 20a of the airbag body 20 to reliably transmit the tension to the vehicle body; the second connecting portion 32 of the fastener 30 is integrally connected to the airbag body 20 through a continuous and closed sewn joint portion 32a, so that the tension is evenly distributed along the sewn joint portion 32a, thereby optimizing the force path between the fastener 30 and the airbag body 20, improving the force transmission efficiency and overall stability, and improving the connection strength between the fastener 30 and the airbag body 20 as well as the durability and reliability of the airbag assembly 1.

[0050] According to some embodiments of the present invention, such as Figures 6-9 As shown, the path of the sewing joint 32a is at least partially consistent with the outline of the outer edge of the corresponding second connecting part 32; and / or, the sewing joint 32a is circular, elliptical, rectangular or shield-shaped.

[0051] Here, at least a portion of the stitching path of the sewn joint 32a corresponds to at least a portion of the outline of the outer edge of the second connecting portion 32. Specifically, the second connecting portion 32 is sewn to the airbag body 20, and the sewn thread forms the sewn joint 32a along a predetermined path. At least a portion of the stitching path corresponds to the shape of at least a portion of the outer edge of the second connecting portion 32, so that the sewn joint 32a can be located within the range of the second connecting portion 32, and the at least a portion of the stitching path of the sewn joint 32a maintains a substantially uniform spacing with at least a portion of the edge of the second connecting portion 32, so that the sewn area is fully covered by the second connecting portion 32.

[0052] This design allows the sewing area to overlap with the stress-bearing area of ​​the fastener 30, enabling the fastener 30 to connect with the airbag body 20 with a larger effective area. By increasing the stress-bearing area, the overall strength of the sewing connection can be improved, and the structure of the fastener 30 can be made more compact. This allows for the lightweighting of the airbag assembly 1 while ensuring the connection strength between the fastener 30 and the airbag body 20. At the same time, the similar shape also facilitates the positioning of the sewing trajectory, allowing the sewing equipment to follow the contour of the second connection part 32, reducing the difficulty of sewing operations and improving product consistency and yield.

[0053] In some embodiments, the second connecting portion 32 has a preset area, and the area ratio of the sewn joint portion 32a on the second connecting portion 32 is between 80% and 95%. That is, the area enclosed by the sewn joint portion 32a accounts for 80% to 95% of the total area of ​​the second connecting portion 32. This design allows the sewn area to fully cover the effective stress-bearing range of the second connecting portion 32, avoiding local stress concentration due to an excessively small sewn area, and preventing the sewn area from exceeding the boundary of the second connecting portion 32, thus preventing connection failure. The 80%-95% area ratio allows for a reasonable non-sewn area to be reserved at the edge of the second connecting portion 32 while ensuring sewn strength, thus balancing connection reliability and the structural integrity of the airbag. In some specific embodiments, the area ratio of the sewn joint portion 32a on the second connecting portion 32 is 90%.

[0054] In some embodiments, the sewing joint 32a is circular, elliptical, rectangular, or shield-shaped. Here, the second connecting portion 32 is configured as a region corresponding to the shape of the sewing joint 32a, i.e., when the sewing joint 32a is circular, such as... Figure 6 As shown, the second connecting portion 32 is constructed as a circular area, with the sewing thread following a circular trajectory to form a circular closed sewing joint 32a; when the sewing joint 32a is elliptical, the second connecting portion 32 is constructed as an elliptical area; when the sewing joint 32a is rectangular, as shown... Figure 7 As shown, the second connecting part 32 is constructed as a rectangular area, and the sewing thread follows the rectangular trajectory to form a rectangular closed sewing joint 32a.

[0055] Furthermore, such as Figure 9 As shown, Figure 9 The length and width directions of the sewing joint 32a are shown. The sewing joint 32a is shield-shaped and includes an upper sewing area 32b and a lower sewing area 32c that are connected to each other. The width of the upper sewing area 32b is greater than the width of the lower sewing area 32c. The upper sewing area 32b is generally straight or a gently convex outward curve, and its width is larger to correspond to the forehead and eye areas of the upper half of the occupant's face. The lower sewing area 32c is arc-shaped and smaller in width, corresponding to the nose, mouth, and chin areas of the lower half of the occupant's face. The overall sewing joint 32a forms a closed loop-shaped profile that is wider at the top and narrower at the bottom.

[0056] By setting the sewing joint 32a to the aforementioned shield-shaped structure and matching the shape of the second connecting part 32, the receiving area 21a formed by the sewing joint 32a after the airbag is inflated can better conform to the curve of the human face, achieving comprehensive contour protection for the forehead, eyes, nose, mouth and chin, avoiding local pressure concentration, improving the protection effect and the comfort of the occupant 2.

[0057] In some specific embodiments, such as Figure 9 As shown, the second connecting portion 32 is shield-shaped, narrower at the ends facing the first connecting portion 31 and wider in the middle. Its width gradually increases in a trapezoidal shape from both ends to the middle. The sewing joint 32a can be configured as a shield-shaped structure matching the shape of the second connecting portion 32, so that the tensile force can transition evenly along the width direction, optimizing the stress transmission path. Furthermore, the shield-shaped structure can better conform to the connection area shape between the tethering member 30 and the airbag body 20, improving material utilization while ensuring connection strength.

[0058] According to some embodiments of the present invention, such as Figures 4-5 As shown, the fastening member 30 has a first connecting portion 31 at both ends in the extending direction, and a second connecting portion 32 is located between the two first connecting portions 31; and / or, the width of the fastening member 30 gradually increases in the direction from the first connecting portion 31 to the second connecting portion 32.

[0059] Specifically, the width of the fastener 30 gradually increases from the first connecting portions 31 at both ends to the second connecting portion 32 in the middle, making the second connecting portion 32 wider than the first connecting portion 31. At this point, the fastener 30 has a shape that is narrow at both ends and wide in the middle. The larger area of ​​the second connecting portion 32 ensures that the sewing joint 32a is completely within the range of the second connecting portion 32, guaranteeing that the sewing area is fully covered by the second connecting portion 32. This matches the stress-bearing area of ​​the fastener 30, thereby improving the connection strength between the fastener 30 and the airbag body 20. Furthermore, because the width of the fastener 30 gradually increases from both ends to the middle, the stress is gradually dispersed along the width direction during the transmission of tension from the first connecting portion 31 to the second connecting portion 32. When the airbag body 20 is inflated and under stress, the tension enters from the narrower first connecting portion 31 and then spreads evenly along the gradually widening second connecting portion 32, avoiding the concentration of tension in a localized area of ​​the sewing area, reducing the risk of suture tearing, optimizing the tension transmission path, and improving stress distribution. Furthermore, the wider second connection portion 32 can provide a larger operating area during sewing, which facilitates the positioning and stitching of the sewing equipment, thereby improving production efficiency and product consistency.

[0060] In some embodiments, the fastening member 30 is U-shaped and disposed in the cavity 20b of the airbag body 20. The fastening member 30 has a first connecting part 31 at both ends in the extending direction. The two first connecting parts 31 are used to connect with the fixing structure. The second connecting part 32 is located between the two first connecting parts 31, that is, the middle area of ​​the fastening member 30.

[0061] According to some embodiments of the present invention, the two first connecting portions 31 are at least partially overlapping, or the two first connecting portions 31 are spaced apart. Specifically, the fastener 30 has first connecting portions 31 at both ends in the extending direction. In some embodiments, the two first connecting portions 31 at least partially overlap, in which case the two first connecting portions 31 can be stacked so that their mounting holes are aligned with each other and fixedly connected to the fixing structure. With this design, the two first connecting portions 31 share the same connection point, eliminating the need to set separate independent mounting positions. In other embodiments, the two first connecting portions 31 are separated from each other and spaced a certain distance apart, so as to be connected to different positions of the fixing structure, or to different connecting portions 20a of the airbag body 20. A certain distance can be set between the two first connecting portions 31 so that the two ends of the fastener 30 are fixed at two different mounting points. The two configuration methods can be selected according to the specific structural requirements and assembly space of the airbag assembly 1.

[0062] In some embodiments, such as Figure 5As shown, the fastening member 30 includes a first segment 33 and a second segment 34. One end of the first segment 33 is provided with one of the first connecting portions 31; one end of the second segment 34 is connected to the other end of the first segment 33, and the other end of the second segment 34 is provided with another of the first connecting portions 31; wherein, the second connecting portion 32 is located at the connection between the second segment 34 and the first segment 33. Specifically, the fastening member 30 is an integral structure, and during the manufacturing process, the first segment 33 and the second segment 34 of the fastening member 30 can be integrally formed.

[0063] The fastening member 30 is generally V-shaped or U-shaped. The first segment 33 and the second segment 34 meet at the connection point and form the second connecting part 32. The first segment 33 and the second segment 34 extend from the second connecting part 32 to both sides and form the first connecting part 31. The two first connecting parts 31 are used to connect with the connecting part 20a of the fixing structure and / or the airbag body 20, respectively. The second connecting part 32 is used to sew the connection with the airbag body 20.

[0064] Here, the first segment 33 and the second segment 34 can be symmetrically arranged so that the two first connecting parts 31 are symmetrically arranged about the central axis of the second connecting part 32. When the airbag body 20 is inflated and subjected to force, the tension of the fastener 30 is transmitted to the fixed structure through the two first connecting parts 31 respectively, and at the same time to the airbag body 20 through the second connecting part 32. The first segment 33 and the second segment 34 can reduce the force on each first connecting part 31, realize the decomposition of force, optimize the force distribution, avoid local overload, and at the same time reduce the stress intensity per unit area of ​​the airbag body 20, avoid tearing or damage to the airbag body 20 due to excessive local stress, and improve the reliability and durability of the connection.

[0065] Furthermore, the first segment 33 and the second segment 34 simultaneously exert a pulling effect on the airbag body 20, so that the sewing joint 32a on the airbag body 20 remains in a centered position, preventing the sewing joint 32a from shifting to one side or twisting, ensuring that the sewing joint 32a is always aligned with the head of the occupant 2, and improving the accuracy and reliability of the protection.

[0066] The tethering component 30, composed of the first segment 33 and the second segment 34, has higher structural stability during operation and can better adapt to the increasing trend of the instrument panel central control display screen. Through the symmetrical force-bearing structure and stable support frame, it can solve problems such as limited installation space and changes in airbag deployment path caused by the increase in display screen size.

[0067] Furthermore, such as Figure 2As shown, the distance between the first segment 33 and the second segment 34 gradually increases in the direction from the first connecting part 31 to the second connecting part 32. Specifically, the structure of the tether 30 is designed to converge at the first connecting part 31 and expand at the second connecting part 32, which can increase the connection area between the tether 30 and the airbag body 20, optimize the force distribution between the tether 30 and the airbag body 20, and expand the head-accommodating space.

[0068] According to some embodiments of the present invention, such as Figure 4 As shown, the fastener 30 has a first connecting portion 31 and a second connecting portion 32 at both ends in the extending direction. The fastener 30 is constructed to have at least two fasteners, and the sewing joint portion 32a connects the second connecting portions 32 of the at least two fasteners 30.

[0069] Specifically, the fastening member 30 is constructed in at least two parts, with one end of each fastening member 30 being a first connecting part 31 and the other end being a second connecting part 32. The second connecting parts 32 of the at least two fastening members 30 are stacked with the airbag body 20, so that the multiple second connecting parts 32 overlap with the airbag body 20 in the thickness direction. The sewing thread is sewn along a predetermined trajectory to fix the second connecting parts 32 of the multiple fastening members 30 to the airbag body 20 as a whole.

[0070] Here, multiple fasteners 30 can pull the airbag body 20 from different positions, thereby forming multi-point constraints. This ensures that the airbag body 20 is subjected to balanced tension in multiple directions during deployment, preventing airbag displacement or torsion, ensuring that the sewn joint 32a is always aligned with the head of the occupant 2, improving the accuracy and reliability of airbag protection, and reducing the load on individual fasteners 30 and the airbag body 20. This disperses the force and prevents fasteners 30 from breaking or the airbag body 20 from tearing due to excessive local stress.

[0071] At least two interconnected fasteners 30 provide higher structural stability during operation, better adapting to the growing trend of dashboard and central control displays. Through a symmetrical force-bearing structure and a stable support frame, they address issues such as limited installation space and changes in airbag deployment paths caused by the increased display size.

[0072] Furthermore, such as Figure 4As shown, the second connecting portions 32 of at least two fasteners 30 at least partially overlap to form a first overlapping area 300, and the sewn joint portion 32a is located at least in the first overlapping area 300. That is, the second connecting portions 32 of multiple fasteners 30 are connected to the airbag body 20 through the same sewn joint portion 32a, and the sewing thread passes through the second connecting portions 32 of multiple fasteners 30 at the same time, so that the layers of material in the sewn joint portion 32a are interlocked, forming a more robust mechanical connection, improving the overall tensile strength and tear resistance of the sewn joint portion 32a, thereby enhancing the overall strength of the sewn joint portion 32a.

[0073] According to some embodiments of the present invention, such as Figure 2 , Figure 3 , Figure 5 As shown, the airbag assembly for a vehicle also includes a reinforcing sheet 23, which partially overlaps with the airbag body 20 and the second connecting portion 32 in the thickness direction to form a second overlapping area 200. A sewing joint 32a is located in the second overlapping area 200 to sewing and fix the reinforcing sheet 23, the airbag body 20 and the second connecting portion 32 together.

[0074] Specifically, the reinforcing piece 23, as an additional reinforcing layer, can increase the material thickness and tensile strength at the sewing joint 32a, and disperse the tension of the tether 30 on the airbag body 20, avoiding local stress concentration and effectively preventing the sewing thread from tearing the airbag body 20 under stress.

[0075] The thickness direction is perpendicular to the surface of the airbag body 20, as shown in the reference. Figure 5 The reinforcing sheet 23, the airbag body 20, and the second connecting part 32 are stacked in the thickness direction to form a partial overlap in the thickness direction, which is called the second overlap area 200. The stacking order of the three can be set according to actual process requirements. The path of the sewing thread is located within the second overlap area 200 in the thickness direction, which can realize the synchronous fixation of the fastener 30, the reinforcing sheet 23, and the airbag body 20. Moreover, the sewing thread passes through three layers of materials, which can form a more stable mechanical connection and make the three form an integral force-bearing unit. When the airbag body 20 is inflated and subjected to force, it can work together to improve the structural stability of the airbag assembly 1.

[0076] In some embodiments, such as Figure 3 As shown, the reinforcing piece 23 is located between the airbag body 20 and the second connecting part 32. The airbag body 20 and the second connecting part 32 are attached to each other in the second overlapping area 200. The reinforcing piece 23 is sandwiched between the airbag body 20 and the second connecting part 32. During sewing, the sewing thread passes through the airbag body 20, the reinforcing piece 23 and the second connecting part 32 in sequence to fix the three together.

[0077] In other embodiments, the reinforcing piece 23 is located outside the airbag body 20 and the second connecting part 32. The airbag body 20 and the second connecting part 32 are attached to each other in the second overlap area 200. The reinforcing piece 23 is stacked on the outer surface of the airbag body 20 or the second connecting part 32. During sewing, the sewing thread passes through the reinforcing piece 23, the airbag body 20 and the second connecting part 32 to fix the three together.

[0078] In some existing technologies, airbag manufacturing uses a two-stage sewing process, first sewing the reinforcing piece 23 to the airbag body 20, and then sewing the fastener to the airbag body 20. This two-stage sewing process involves many steps, is costly, and inefficient.

[0079] According to some embodiments of the present invention, the reinforcing piece 23, the airbag body 20, and the second connecting portion 32 are sewn together in the same sewing process. Specifically, through a single sewing operation, the sewing thread passes through the reinforcing piece 23, the airbag body 20, and the second connecting portion 32 simultaneously along a predetermined trajectory, forming a single-thread sewing joint 32a, thus completing the fixed connection of the three components in one go. This process eliminates the need for multiple sewing operations between the airbag body 20 and the reinforcing piece 23, and between the reinforcing piece 23 and the second connecting portion 32, thereby effectively reducing sewing processes, lowering production time and manufacturing costs, and significantly improving production efficiency.

[0080] In some existing technologies, the placement of the tethering device is unreasonable, resulting in uneven restraint force of the tethering device on the airbag, unstable airbag deployment posture, easy deviation, and the receiving area 21a formed by the tethering device and the front panel is small, which can only fit the occupant's nose or part of the face, making it difficult to achieve effective protection for the entire head.

[0081] According to some embodiments of the present invention, such as Figure 1 As shown, when the airbag assembly is inflated, the area enclosed by the sewn joint 32a is recessed into the outer surface of the airbag body 20 to form a receiving area 21a suitable for accommodating the face of the occupant 2. Specifically, because the sewn joint 32a tightens and fixes the three layers of material—the reinforcing piece 23, the airbag body 20, and the second connecting part 32—along a closed loop, the portion of the airbag body 20 located inside the closed loop naturally undergoes an inward concave deformation. Simultaneously, the second connecting part 32 provides additional support and constraint to the airbag body 20, further stabilizing the concave shape of the receiving area 21a. After the airbag deploys, the receiving area 21a is precisely aligned with the face of the occupant 2, accommodating the nose, mouth, and part of the cheek area of ​​the occupant 2, preventing the airbag body 20 from directly pressing on the face and causing secondary injury, thus achieving contoured protection of the occupant 2's face.

[0082] The receiving area 21a is located inside the sewn joint 32a and has an inwardly recessed shape. When the airbag body 20 inflates and deploys, it faces the occupant 2, and the receiving area 21a is positioned precisely opposite the face of the occupant 2. The shape and size of the receiving area 21a are configured to match the facial contour of the occupant 2 to accommodate the nose, mouth, and part of the cheek area, preventing the airbag body 20 from compressing the face and causing secondary injury. This achieves precise protection for the occupant 2's face, improving the accuracy of protection while maintaining a low-cost design. Furthermore, by adjusting the shape and size of the sewn joint 32a, the contour and depth of the receiving area 21a can be designed to adapt to different facial features of the occupant 2 and the protection requirements of different collision conditions.

[0083] In some embodiments, such as Figure 9 As shown, in the unfolded state, the sewing joint 32a is shield-shaped, and the length and width of the sewing joint 32a are not less than 100mm.

[0084] In some embodiments, the area of ​​the receiving region 21a that receives the tip of the nose is not less than 5 cm². 2 The area accommodating the head portion shall not be less than 10cm². 2 The area that can accommodate the chin and chest is no less than 10cm. 2 .

[0085] According to some embodiments of the present invention, the first connecting portion 31 is sewn to the connecting portion 20a. Specifically, the connecting portion 20a of the airbag body 20 can be provided at the root or mounting end of the airbag body 20 for fixing the airbag body 20 to the fixing structure. The first connecting portion 31 is sewn to the connecting portion 20a. This design simplifies the connection structure between the first connecting portion 31 and the connecting portion 20a, eliminates the need for additional components such as fasteners, reduces the cost and weight of the airbag assembly 1, and improves the connection reliability between the first connecting portion 31 and the connecting portion 20a, thereby increasing production efficiency.

[0086] According to some embodiments of the present invention, the airbag body 20 includes a front panel 21 and a side panel 22. The front panel 21 is adapted to contact the occupant's face, and the side panel 22 is disposed on the side of the front panel 21 and together with the front panel 21 forms a cavity 20b. Here, the front panel 21 is positioned facing the occupant 2 and is used to contact the occupant 2's head to provide protection after the airbag is inflated and deployed. The side panel 22 is disposed on the side of the front panel 21 and connected to the edge of the front panel 21. The front panel 21 and the side panel 22 together form the cavity 20b. When the airbag body 20 is triggered, it inflates rapidly. At this time, the front panel 21 and the side panel 22 move relative to the fixed structure, unfolding from the rear of the dashboard to the front of the dashboard, thus achieving a screen jump and contacting the occupant 2.

[0087] According to some embodiments of the present invention, the second connecting portion 32 is connected to the front panel 21 and / or the side panel 22 via a sewing joint 32a. Here, during the manufacturing process of the airbag assembly 1, the second connecting portion 32 can be stacked with at least one of the front panel 21 and the side panel 22, and sewn along a predetermined trajectory using a sewing device, so that the sewing thread passes through the second connecting portion 32 and is sewn connected to at least one of the front panel 21 and the side panel 22, forming a continuous and closed sewing joint 32a. By forming an integral connection between the fastener 30 and the front panel 21 and / or the side panel 22 via the continuous and closed sewing joint 32a, the tension of the fastener 30 can be evenly distributed along the shape of the sewing joint 32a, optimizing the force path between the fastener 30 and the airbag body 20, thereby improving the connection strength between the fastener 30 and the airbag body 20, as well as the durability and reliability of the airbag assembly 1.

[0088] In some embodiments of the present invention, the airbag assembly 1 for a vehicle includes a fixing structure, an airbag body 20, and a fastener 30. The fixing structure is a gas generator housing. The airbag body 20 is disposed on the fixing structure and folded and stored behind the dashboard in the non-triggered state. The airbag body 20 includes a front panel 21 and a side panel 22. The front panel 21 is disposed facing the occupant 2, and the side panel 22 is disposed on the side of the front panel 21 and connected to the edge of the front panel 21. The front panel 21 and the side panel 22 together enclose a cavity 20b. The first connecting part 31 of the fastener 30 is connected to the fixing structure, and the second connecting part 32 is connected to the front panel 21 and the reinforcing piece 23 by sewing, forming a continuous and closed sewing joint 32a. Here, the second connecting part 32, the front panel 21 and the reinforcing piece 23 are stacked, and the sewing thread is sewn along the overlapping area of ​​the second connecting part 32, the front panel 21 and the reinforcing piece 23 to form the sewing joint 32a. The shape of the sewing joint 32a is continuous and closed, that is, the sewing thread intersects at the starting point and the ending point to form a complete closed shape without any lateral openings or interruptions. The shape of the sewing joint 32a is designed in this way so that the fastener 30, the front panel 21 and the reinforcing piece 23 are fixedly connected through a single sewing process, realizing the integrated sewing of the three.

[0089] During manufacturing, the front panel 21 and the reinforcing piece 23 are first stacked in a predetermined position, so that they overlap in the area to be sewn. Then, the second connecting part 32 of the fastener 30 is stacked on or between the second overlapping area 200 of the front panel 21 and the reinforcing piece 23, so that the three form a second overlapping area 200 in the thickness direction. Subsequently, sewing is performed along a predetermined track using a sewing machine, with the sewing thread passing through the second connecting part 32, the front panel 21, and the reinforcing piece 23 to form a sewn joint 32a. Since the sewn joint 32a is completely located within the second overlapping area 200, the sewing thread fixes the three together at once, achieving integrated fixation of the front panel 21, the reinforcing piece 23, and the second connecting part 32. After being triggered, the airbag body 20 will rapidly inflate and move relative to the fixed structure, unfolding from the rear of the dashboard to the front of the dashboard, achieving a screen jump, and thus making contact with the occupant 2.

[0090] The airbag assembly 1 for vehicles designed according to the present invention simplifies the sewing process, effectively improves the load transfer efficiency during the airbag inflation process, and provides more stable and balanced support for the airbag body 20, thereby enhancing the protection performance for the occupant 2.

[0091] The following is a brief description of a suturing method for an airbag assembly according to an embodiment of the present invention.

[0092] The suture method according to the present invention is used for the airbag assembly described in any of the above embodiments, comprising: The second connecting portion of the tethering member is stacked with the airbag body to form an overlapping area; In a single sewing process, the overlapping area of ​​the second connecting part and the airbag body is sewn along a predetermined trajectory, so that the sewing thread passes through the airbag body and the second connecting part at the same time, forming a closed sewing joint to fix the airbag body and the second connecting part together.

[0093] Here, the second connecting part of the fastening component is first stacked with the airbag body to form an overlapping area. During sewing, the path of the sewing thread lies within the overlapping area of ​​the airbag body and the second connecting part in the thickness direction. Through a single sewing operation, the sewing thread passes through both the airbag body and the second connecting part simultaneously, thus securing them together. The sewing thread passes through two layers of material to form a single, integrated load-bearing unit. When the airbag body is inflated and subjected to force, the two components work together to improve the structural stability of the airbag assembly.

[0094] Meanwhile, the two parts can be fixed in one stitch, eliminating the need for multiple stitches between the airbag body and the second connecting part. This reduces sewing processes, lowers production time and manufacturing costs, and improves production efficiency. Furthermore, the sewn joint features a continuous and closed structure, ensuring even distribution of tension along the joint without stress concentration points. This effectively prevents thread tearing and further enhances the durability and lifespan of the airbag assembly.

[0095] The suture method according to the present invention is used for the airbag assembly described in any of the above embodiments, the airbag assembly further comprising a reinforcing sheet, the suture method comprising: Stack the airbag body and the reinforcing sheet together so that the airbag body and the reinforcing sheet partially overlap in the thickness direction; The second connecting part of the tether is stacked on the overlapping area of ​​the airbag body and the reinforcing plate to form a second overlapping area; In a single sewing process, the overlapping area is sewn along a predetermined trajectory, so that the sewing thread passes through the reinforcing piece, the airbag body, and the second connecting part simultaneously, forming a closed sewing joint to fix the reinforcing piece, the airbag body, and the second connecting part together.

[0096] Here, the airbag body and the reinforcing plate are first stacked in a predetermined position, and then the second connecting part of the fastening member is stacked on the overlapping area of ​​the airbag body and the reinforcing plate to form a second overlapping area. The second connecting part can be sandwiched between the airbag body and the reinforcing plate, or it can be stacked on the surface of the reinforcing plate away from the airbag body.

[0097] During sewing, the path of the sewing thread lies within the second overlap area in the thickness direction of the reinforcing sheet, the airbag body, and the second connecting part. Through a single sewing operation, the sewing thread simultaneously passes through the reinforcing sheet, the airbag body, and the second connecting part, achieving synchronous fixation of all three. Furthermore, because the sewing thread passes through three layers of material, a more stable mechanical connection is formed, making the three components a unified force-bearing unit. When the airbag body inflates and is subjected to force, the three components work synergistically, significantly improving the structural stability of the airbag assembly.

[0098] Meanwhile, the three components can be secured in a single stitch, eliminating the need for multiple stitches between the airbag body and the reinforcing plate, and between the reinforcing plate and the second connecting part. This reduces sewing steps, lowers production time and manufacturing costs, and improves production efficiency. Furthermore, the continuous and closed structure of the sewn joint ensures even distribution of tension along the joint, eliminating stress concentration points and effectively preventing thread tearing, further enhancing the durability and lifespan of the airbag assembly.

[0099] The vehicle according to an embodiment of the present invention is briefly described below.

[0100] The vehicle according to the present invention includes the airbag assembly 1 for a vehicle as described in any of the above embodiments, or includes the stitching method for the airbag assembly as described in any of the above embodiments. Because the vehicle according to the present invention is equipped with the airbag assembly 1 for a vehicle as described in the above embodiments or includes the stitching method for the airbag assembly as described in the above embodiments, the vehicle has better safety performance.

[0101] In particular, the above-described airbag assembly 1 for a vehicle or the stitching method for an airbag assembly is especially suitable for vehicles equipped with intelligent driving modes.

[0102] In summary, according to the airbag assembly 1 for a vehicle of the present invention, the first connecting portion 31 of the fastener 30 is connected to the fixed structure of the vehicle and / or the connecting portion 20a of the airbag body 20 to reliably transmit the tension to the vehicle body; the second connecting portion 32 of the fastener 30 is integrally connected to the airbag body 20 through a continuous and closed sewn joint portion 32a, so that the tension is evenly distributed along the sewn joint portion 32a, thereby optimizing the force path between the fastener 30 and the airbag body 20, improving the force transmission efficiency and overall stability, and improving the connection strength between the fastener 30 and the airbag body 20 as well as the durability and reliability of the airbag assembly 1.

[0103] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0104] Although embodiments of the present invention have been shown and described above, variations, modifications, substitutions and alterations can be made to the above embodiments.

Claims

1. An airbag assembly for a vehicle, characterized in that, The vehicle includes a fixed structure, and the airbag assembly includes: The airbag body (20) has a connecting part (20a) connected to the fixed structure and has a cavity (20b) formed inside. The fastening element (30) is disposed in the cavity (20b) and has a first connecting part (31) and a second connecting part (32). The first connecting part (31) is connected to the fixing structure and / or the connecting part (20a). The second connecting part (32) is connected to the airbag body (20) by sewing and forms a continuous and closed sewing joint (32a).

2. The airbag assembly for a vehicle according to claim 1, characterized in that, The stitching path of the sewing joint (32a) at least partially coincides with the outline of the outer edge of the corresponding second connecting part (32); and / or, The sewing joint (32a) is circular, elliptical, rectangular or shield-shaped.

3. The airbag assembly for a vehicle according to claim 2, characterized in that, The sewing joint (32a) is shield-shaped and includes an upper sewing area (32b) and a lower sewing area (32c) connected to each other, wherein the width of the upper sewing area (32b) is greater than the width of the lower sewing area (32c).

4. The airbag assembly for a vehicle according to claim 1, characterized in that, The fastening member (30) has a first connecting portion (31) at each end in the extending direction, and a second connecting portion (32) is located between the two first connecting portions (31); and / or, The width of the fastening member (30) gradually increases in the direction from the first connecting part (31) to the second connecting part (32).

5. The airbag assembly for a vehicle according to claim 4, characterized in that, The two first connecting portions (31) are arranged to overlap at least partially, or the two first connecting portions (31) are arranged to be spaced apart.

6. The airbag assembly for a vehicle according to claim 1, characterized in that, The fastener (30) has a first connecting portion (31) and a second connecting portion (32) at both ends in the extension direction. The fastener (30) is constructed in at least two parts, and the sewing joint (32a) connects the second connecting portions (32) of at least two fasteners (30).

7. The airbag assembly for a vehicle according to claim 6, characterized in that, The second connecting portions (32) of at least two of the tethering members (30) at least partially overlap to form a first overlapping area (300), and the sewn joint (32a) is located at least in the first overlapping area (300).

8. The airbag assembly for a vehicle according to claim 1, characterized in that, Also includes: The reinforcing piece (23) partially overlaps the airbag body (20) and the second connecting part (32) in the thickness direction to form a second overlapping area (200). The sewn joint (32a) is located in the second overlapping area (200) to sew and fix the reinforcing piece (23), the airbag body (20) and the second connecting part (32) together.

9. The airbag assembly for a vehicle according to claim 8, characterized in that, The reinforcing piece (23), the airbag body (20), and the second connecting part (32) are sewn together in the same sewing process.

10. The airbag assembly for a vehicle according to claim 1, characterized in that, When the airbag assembly is inflated, the area enclosed by the sewn joint (32a) is recessed into the outer surface of the airbag body (20) to form a receiving area (21a) suitable for accommodating the occupant's face.

11. The airbag assembly for a vehicle according to any one of claims 1-10, characterized in that, The airbag body (20) includes a front panel (21) and a side panel (22). The front panel (21) is adapted to contact the occupant's face, and the side panel (22) is located on the side of the front panel (21) and together with the front panel (21) forms the cavity (20b).

12. The airbag assembly for a vehicle according to claim 11, characterized in that, The second connecting part (32) is connected to the front panel (21) and / or the side panel (22) via the sewing joint (32a).

13. A suture method for an airbag assembly according to any one of claims 1-12, characterized in that, include: The second connecting portion of the tethering member is stacked with the airbag body to form an overlapping area; In a single sewing process, the overlapping area of ​​the second connecting part and the airbag body is sewn along a predetermined trajectory, so that the sewing thread passes through the airbag body and the second connecting part at the same time, forming a closed sewing joint to fix the airbag body and the second connecting part together.

14. A suture method for an airbag assembly according to any one of claims 1-12, characterized in that, The airbag assembly further includes a reinforcing sheet, and the suturing method includes: Stack the airbag body and the reinforcing sheet together so that the airbag body and the reinforcing sheet partially overlap in the thickness direction; The second connecting part of the tether is stacked on the overlapping area of ​​the airbag body and the reinforcing plate to form a second overlapping area; In a single sewing process, the overlapping area is sewn along a predetermined trajectory, so that the sewing thread passes through the reinforcing piece, the airbag body, and the second connecting part simultaneously, forming a closed sewing joint to fix the reinforcing piece, the airbag body, and the second connecting part together.

15. A vehicle, characterized in that, Includes an airbag assembly for a vehicle according to any one of claims 1-12; or includes a stitching method for an airbag assembly according to any one of claims 13-14.

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