Coated main driving safety air bag assembly

Abstract

The utility model relates to the technical field of safety air bags, in particular to a wrapping type main driving safety air bag assembly which comprises an icon cover, an air bag cover cap and an installation frame, the air bag cover cap is detachably connected with the installation frame, and further, the surface of the air bag cover cap is sleeved with air bag leather. A sewing thread used for edge sealing is formed on the edge of the air bag leather, an abutted seam groove is formed in the position, corresponding to the sewing thread, of the surface of the air bag cover cap and used for hiding the sewing thread, and a tearing line structure is formed on the back face of the air bag cover cap. Compared with a traditional method, according to the technical scheme, the surface of the air bag cover is coated with the air bag leather, the defects of the surface of the air bag cover can be effectively covered, and the touch hand feeling is optimized; and meanwhile, the airbag cover is provided with a tearing line structure, and the strength of the airbag leather is weakened along with the trend direction of the tearing line structure, so that the explosion stability of the safety airbag is improved, and the phenomenon that the leather splashes or cannot be unfolded when the safety airbag is exploded is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of airbags, and particularly relates to a wrapped driver's airbag assembly. Background Art

[0002] Airbags play a crucial role in vehicle collisions. By quickly inflating and forming a buffer zone, they significantly reduce the risk of occupant injury and are an essential part of modern automotive safety design.

[0003] A patent document with the patent announcement number CN211252516U discloses an airbag assembly, which includes an inflatable airbag, a gas generator for inflating the inflatable airbag, and a gas guiding device; wherein, the gas guiding device is arranged outside the gas generator and has a blocking part for blocking the gas generated by the gas generator and an opening part for allowing the gas to pass through. This embodiment can enable the inflatable airbag to deploy in a desired direction.

[0004] Currently, the airbag covers of airbags are widely made of injection-molded materials and painted on the outside of the airbag covers, which results in a poor touch feel when touched. In order to improve the touch feel, it is necessary to improve the material covering the airbag cover while ensuring that it does not affect the normal use of the airbag. Summary of the Utility Model

[0005] In order to overcome the above technical problems, the purpose of the utility model is to provide a wrapped driver's airbag assembly, which solves the problem of poor touch feel of the current airbag cover.

[0006] The purpose of the utility model can be achieved by the following technical solutions: A wrapped driver's airbag assembly includes an icon cover, an airbag cover, and a mounting frame. The airbag cover and the mounting frame are detachably connected. Further, an airbag leather is sleeved on the surface of the airbag cover. A sewing thread for edge sealing is formed at the edge of the airbag leather. A stitching groove for hiding the sewing thread is opened at a position corresponding to the sewing thread on the surface of the airbag cover. A tear line structure is formed on the back of the airbag cover.

[0007] Further, an installation groove is opened on the surface of the airbag cover. The size of the installation groove matches the size of the icon cover. The back of the icon cover passes through the airbag leather and is heat welded to the installation groove together.

[0008] Further, the material of the airbag leather is PU + PA6.

[0009] Further, the tear line structure is in an "H" shape.

[0010] Furthermore, a buckle is integrally formed on the back surface of the airbag cover, and the buckle is fixedly connected to the card slot on the surface of the installation frame by clamping.

[0011] Furthermore, a sealed cavity is formed between the airbag cover and the installation frame, and an airbag body and a gas generator are arranged in the sealed cavity. Among them, the gas generator is wrapped in the middle position of the airbag body.

[0012] Furthermore, reinforcing ribs are arranged on the back surface of the airbag cover.

[0013] Furthermore, the airbag leather is bonded to the airbag cover with glue.

[0014] Furthermore, a horn logo is embossed on the surface of the airbag leather.

[0015] Furthermore, the structural strength of the airbag leather is weakened according to the trend direction of the tear line structure.

[0016] The beneficial effects of the present utility model: Compared with the traditional method, the technical solution covers the airbag leather on the surface of the airbag cover, which can effectively cover the defects on the surface of the airbag cover and optimize the touch feel; at the same time, the airbag cover is designed with a tear line structure, and the structural strength of the airbag leather is weakened following the trend direction of the tear line structure, improving the stability of the airbag ignition and ensuring that the airbag will not splash leather or fail to deploy when ignited. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The following further describes the present utility model with reference to the accompanying drawings.

[0018] Figure 1 is a cross-sectional view of the airbag assembly in this solution;

[0019] Figure 2 is a side view of the icon cover, airbag leather and airbag cover in this solution;

[0020] Figure 3 is a front view of the airbag leather in this solution;

[0021] Figure 4 is a front view of the airbag cover in this solution;

[0022] Figure 5 is a rear view of the airbag cover in this solution;

[0023] Figure 6 is a three-dimensional view of the icon cover, airbag leather and airbag cover assembled together in this solution.

[0024] In the figure: 1. Icon cover; 2. Airbag leather; 21. Sewing thread; 3. Airbag cover; 31. Buckle; 32. Installation groove; 33. Seam groove; 34. Tear line structure; 4. Installation frame; 41. Airbag body; 42. Gas generator. Detailed implementation manner

[0025] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0026] As shown in Figure 1 、 Figure 2 A wrapped driver airbag assembly includes an icon cover 1, an airbag cover 3 and an installation frame 4. The airbag cover 3 and the installation frame 4 are detachably connected. An airbag leather 2 is sleeved on the surface of the airbag cover 3. A sewing thread 21 for edge sealing is formed at the edge of the airbag leather 2. A seam groove 33 corresponding to the position of the sewing thread 21 is opened on the surface of the airbag cover 3. The seam groove 33 is used to hide the sewing thread 21. A tear line structure 34 is formed on the back of the airbag cover 3.

[0027] In this solution, the airbag leather 2 is wrapped on the surface of the airbag cover 3, which can effectively cover the defects on the surface of the airbag cover 3 and optimize the touch feel. At the same time, the airbag cover 3 is designed with a tear line structure 34, and the structural strength of the airbag leather 2 is weakened along the trend direction of the tear line structure 34, improving the stability of the airbag ignition and ensuring that the airbag will not splash leather or fail to deploy when ignited.

[0028] As an example, the airbag cover 3 is injection molded from TPO TT1081BZ material. After the surface of the airbag cover 3 is treated by a fluorination process, the airbag leather 2 is bonded to the airbag cover 3 with glue.

[0029] As an example, as shown in Figure 2 、 Figure 3 、 Figure 4 An installation groove 32 is opened on the surface of the airbag cover 3. The size of the installation groove 32 matches the size of the icon cover 1. After the airbag leather 2 is wrapped on the surface of the airbag cover 3, the back of the icon cover 1 is heated and melted, and the icon cover 1 is pressed at the position corresponding to the installation groove 32 until the back of the icon cover 1 passes through the airbag leather 2 and is embedded in the installation groove 32. At this time, the icon cover 1 and the installation groove 32 are hot melt welded together.

[0030] As an example, in this solution, the material of the airbag leather 2 is PU + PA6. Combining PU and PA6 means that the airbag leather 2 has both the elegant appearance and good touch of PU, as well as the strength and durability of PA6.

[0031] Further refining the above solution, as Figure 1 shown, a sealed cavity is formed between the airbag cover 3 and the mounting frame 4. An airbag body 41 and a gas generator 42 are arranged in the sealed cavity. Among them, the gas generator 42 is wrapped in the middle position of the airbag body 41. The airbag system is usually connected to the collision sensor of the vehicle. Once a collision signal is received, the gas generated by the gas generator 42 quickly fills the airbag body 41, causing it to expand rapidly. As the airbag body 41 expands, it will quickly deploy, filling the surrounding space to form a buffer zone. The tear line structure 34 ensures that at the moment when the airbag body 41 expands, the airbag cover 3 can be effectively torn, and the airbag body 41 can be completely exposed. After the airbag body 41 is fully inflated, it will form a soft surface that contacts the occupant's body, reducing the risk of the occupant being injured by dispersing and absorbing the impact force generated by the collision.

[0032] As an example, as Figure 5 shown, the tear line structure 34 is in an "H" shape. The "H"-shaped tear line structure 34 can guide the tearing of the airbag cover 3 when the airbag body 41 deploys, ensuring that the airbag body 41 can be quickly and completely released. Moreover, by controlling the tearing direction, the tear line structure 34 can avoid problems such as accidental tearing and incomplete deployment of part of the airbag.

[0033] Further refining the above solution, as Figure 1 、 Figure 2 shown, a buckle 31 is integrally formed on the back of the airbag cover 3, and the buckle 31 is fixedly connected to the card slot on the surface of the mounting frame 4.

[0034] As an example, as Figure 5 shown, reinforcing ribs are provided on the back of the airbag cover 3. The reinforcing ribs are used to cover the A side of the airbag assembly to avoid appearance defects.

[0035] As an example, as Figure 3 shown, a horn logo is formed on the surface of the airbag leather 2 through a hot stamping process.

[0036] As an example, as Figure 3 、 Figure 5 、 Figure 6As shown, the structural strength of the airbag leather 2 is weakened according to the trend direction of the tear line structure 34. That is, the structural strength at different positions of the airbag leather 2 is different. The local strength is lower closer to the tear line structure 34 and higher farther away from the tear line structure 34, which is beneficial to improving the stability when the airbag is detonated.

[0037] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0038] The above content is only an example and explanation of the present utility model. Those skilled in the art of this technology can make various modifications or supplements to the described specific embodiments or use similar methods to replace them, as long as they do not deviate from the utility model or exceed the scope defined by the claims of the present utility model, they should all belong to the protection scope of the present utility model.

Claims

1. A wrapped driver's airbag assembly, comprising an icon cover (1), an airbag cover (3) and a mounting frame (4), wherein the airbag cover (3) and the mounting frame (4) are detachably connected, characterized in that, The surface of the airbag cover (3) is sleeved with airbag leather (2). A sewing thread (21) for edge sealing is formed at the edge of the airbag leather (2). A stitching groove (33) is provided on the surface of the airbag cover (3) corresponding to the position of the sewing thread (21). The stitching groove (33) is used to hide the sewing thread (21). A tear line structure (34) is formed on the back of the airbag cover (3).

2. The wrapped driver airbag assembly according to claim 1, characterized in that An installation groove (32) is provided on the surface of the airbag cover (3). The size of the installation groove (32) matches the size of the icon cover (1). The back of the icon cover (1) passes through the airbag leather (2) and is hot melt welded to the installation groove (32).

3. The wrapped driver's airbag assembly according to claim 1, wherein, The material of the airbag leather (2) is PU+PA6.

4. The wrap-around driver's airbag assembly according to claim 1, characterized in that, The tear line structure (34) is in an "H" shape.

5. The wrapped driver's airbag assembly according to claim 1, characterized in that, A buckle (31) is integrally formed on the back of the airbag cover (3). The buckle (31) is snap-fitted and fixed to the card slot on the surface of the installation frame (4).

6. The wrapped driver airbag assembly according to claim 1, characterized in that, A sealed cavity is formed between the airbag cover (3) and the installation frame (4). An airbag body (41) and a gas generator (42) are arranged in the sealed cavity. Among them, the gas generator (42) is wrapped in the middle position of the airbag body (41).

7. The wrapped driver's airbag assembly according to claim 1, characterized in that, Reinforcing ribs are provided on the back of the airbag cover (3).

8. The wrapped driver's airbag assembly according to claim 1, characterized in that, The airbag leather (2) is bonded to the airbag cover (3) with glue.

9. The wrapped driver's airbag assembly according to claim 1, characterized in that, A horn logo is provided on the surface of the airbag leather (2) by hot stamping.

10. A wrapped driver's airbag assembly according to claim 4, characterized in that, The structural strength of the airbag leather (2) is weakened according to the trend direction of the tear line structure (34).

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