A non-low-tear skin component and vehicle
By setting an unweakened indicator in the skin assembly, the problem of misuse of unweakened non-low tear skin during production is solved, achieving the error-proof effect of the skin assembly, ensuring the normal opening of the airbag, and improving safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING XIAOKANG AUTO PARTS CO LTD
- Filing Date
- 2025-05-22
- Publication Date
- 2026-06-02
AI Technical Summary
In the existing technology, non-low tear skin is easily misused during the production process, resulting in the airbag failing to deploy and posing a safety hazard.
Design a skin component comprising a first skin, a second skin, and an unweakened indicator portion. The unweakened indicator portion protrudes from the joint edge to distinguish the unweakened skin and clearly displays the unweakened state when connected through the joint edge, thus avoiding misuse.
It effectively improves the error prevention capability of the skin components, avoids the mixing of unweakened and weakened skins, ensures that the airbag can be deployed normally, and improves safety.
Smart Images
Figure CN224311698U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of vehicle interior skin, and in particular to a non-low tear skin component and vehicle. Background Technology
[0002] To improve the overall perceived quality of automotive interiors, an increasing number of interior components are employing wrapping technology to enhance the sense of luxury. Products requiring wrapping primarily include the instrument panel assembly, sub-instrument panel assembly, door panel assemblies, and side pillar assemblies. Currently, the instrument panel wrapping process involves two types of surface finishes:
[0003] One type is a low-tear surface with a general texture (mainly PVC surface that does not require additional surface weakening process) that is bonded to the covering skeleton and then molded. The instrument panel airbag explosion can meet the relevant test requirements.
[0004] Another type of non-low tear surface has a better texture (mainly because genuine leather, microfiber leather and PU surface require an additional surface weakening process) and is formed after being bonded to the covering skeleton. The instrument panel airbag deployment can meet the relevant test requirements.
[0005] In use, low-tear surfaces do not require weakening, while non-low-tear surfaces do. Non-low-tear surfaces are more commonly used in automotive interior dashboard products due to their better texture. However, during the production process, non-low-tear surfaces are easily mistakenly used without weakening for wrapping. If such misused dashboard products enter the market, the airbags may fail to deploy during a burst, potentially causing a safety accident. To prevent the misuse of non-low-tear surfaces without weakening, this invention proposes a method for weakening and preventing errors when wrapping automotive dashboard surfaces. Utility Model Content
[0006] Based on this, a non-low-tear skin assembly and vehicle are provided to solve the problem that the unweakened skin in the prior art is easily misused.
[0007] On one hand, this utility model provides a non-low-tear skin assembly, which is used to cover interior trim and splits open upon bursting to allow airbag deployment. The skin assembly includes:
[0008] A first skin, the first skin including a first joint edge, the first joint edge being located at the edge of the first skin;
[0009] The second skin includes a second joining edge located at the edge of the second skin. The first joining edge is correspondingly disposed to the second joining edge, and the first skin and the second skin are connected by the connection between the first joining edge and the second joining edge.
[0010] An unweakened indicator or a weakened part is provided at the first joint edge and protrudes from the first joint edge; a weakened part is provided on the first skin and is used to indicate that the first skin has been weakened.
[0011] When the first skin is in an unweakened state, an unweakened indicator is connected to the first joint edge; when the first skin is in a weakened state, a weakened portion is present on the first skin.
[0012] Based on the above technical solution, the present invention can be further improved as follows.
[0013] In one implementation, the first skin further includes a first positioning part, which is disposed along the first joining edge;
[0014] The second skin also includes a second positioning part, which is disposed along the second joining edge. The first positioning part and the second positioning part are disposed correspondingly and used for positioning when the first skin and the second skin are connected.
[0015] In one implementation, the first positioning unit and the second positioning unit form at least two one-to-one corresponding positioning groups.
[0016] In one implementation, the first positioning part includes a plurality of first notches formed along the length direction of the first joining edge;
[0017] The second positioning part includes a plurality of second notches opened along the length direction of the second joining edge;
[0018] Multiple first gaps and multiple second gaps are set up in a one-to-one correspondence.
[0019] In one implementation, multiple first gaps are spaced at equal intervals, and multiple second gaps are also spaced at equal intervals.
[0020] In one implementation, both the first and second gaps are V-shaped gaps.
[0021] In one implementation, the unweakened indicator is sheet-shaped and located in the middle of two adjacent first notches.
[0022] In one implementation, the weakened portion is located in the central region of the first skin and has an I-shaped structure.
[0023] In one implementation, the first joining edge and the second joining edge are linear edges of the same length.
[0024] On the other hand, the present invention also provides a vehicle including a non-low-tear skin assembly and an interior trim piece, the skin assembly covering the periphery of the interior trim piece.
[0025] The beneficial effects of this utility model are as follows: By providing a protruding unweakened indicator, the first skin is indicated as not having undergone weakening treatment, making it possible to distinguish whether weakening treatment has been performed from the external structure of the first skin, thus avoiding the misuse of unweakened skins; furthermore, by placing the unweakened indicator at the first joint edge and protruding from it, since the first and second skins are connected through the first and second joint edges, placing the unweakened indicator at the joint edge of the two skins allows for timely detection of the presence of the unweakened indicator when connecting the first and second skins, making the unweakened indicator more obvious and less likely to be overlooked; correspondingly, if the unweakened indicator is present when connecting the first and second skins, interference will occur between the first and second joint edges, immediately indicating that the first skin used is unweakened and misused; in summary, this solution can effectively improve the error prevention function of the skin assembly and avoid the misuse of unweakened and weakened skins. Attached Figure Description
[0026] Figure 1 This is a schematic diagram of the structure of the first and second skins of a non-low-tear skin assembly in one embodiment, without any weakening treatment.
[0027] Figure 2 This is a schematic diagram of the structure of the first skin that has been weakened in another embodiment.
[0028] In the attached diagram, the components represented by each number are as follows:
[0029] 10. First skin; 11. First joint edge; 12. First notch;
[0030] 20. Second skin; 21. Second joint edge; 22. Second notch;
[0031] 31. Unweakened indicator section; 32. Weakened section. Detailed Implementation
[0032] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit the scope of this application. It should be noted that the illustrations provided in this embodiment are only schematic representations of the basic concept of this utility model. Therefore, the drawings only show components related to this utility model and are not drawn according to the actual number, shape, and size of the components in implementation. In actual implementation, the shape, quantity, and proportion of each component can be arbitrarily changed, and the component layout may also be more complex.
[0033] The structures, proportions, sizes, etc., illustrated in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this utility model can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.
[0034] When a vehicle collision occurs, the airbag needs to inflate and deploy instantly to provide cushioning protection for the occupants. The weakening treatment of interior components is intended to reduce the drag when the airbag deploys, ensuring that the airbag can deploy in time along the predetermined trajectory. If the interior components are not weakened, they may be torn into fragments when the airbag deploys, and these fragments may cause secondary injuries to the occupants when they are thrown at high speed.
[0035] Common weakening treatment methods include: pre-cut weakening lines, which involve designing hidden weak lines in the airbag coverage area (such as the center of the steering wheel and the dashboard trim), usually thin-walled structures of less than 0.5mm or laser-cut microgrooves. These weakening lines rupture preferentially when the airbag is inflated, forming regular openings; molding weakening process, in which shallow grooves or textures are imprinted on the surface of interior parts using a mold to form a pre-set rupture path; and layered materials and composite structures, in which some interior parts use multi-layer composite materials, with an outer layer of decorative hard material and an inner layer of low-strength support material.
[0036] In existing technologies, during the production process, the outer skin assembly comprises multiple skins. These skins are first weakened, and then connected together to wrap the interior trim. For non-low-tear skins, the visual difference between weakened and unweathered skins is not very noticeable. Therefore, during production, it is easy to mix weakened and unweathered skins and connect them to wrap the interior trim, potentially causing safety accidents where the airbag fails to deploy. To better distinguish between weakened and unweathered skins and avoid mixing them, the following solution is provided.
[0037] A non-low-tear skin component, see Figure 1 and Figure 2The outer skin assembly is used to cover the interior trim and splits open upon explosion to allow the airbag to deploy. The outer skin assembly includes a first skin 10 and a second skin 20. The outer skin assembly also includes an undamaged indicator 31 or a weakened portion 32. The first skin 10 includes a first joining edge 11 located at the edge of the first skin 10; the second skin 20 includes a second joining edge 21 located at the edge of the second skin 20. The first joining edge 11 and the second joining edge 21 are correspondingly disposed. The skin 20 is connected by the connection of the first joint edge 11 and the second joint edge 21; the unweakened indicator 31 is provided at the first joint edge 11 and protrudes from the first joint edge 11; the weakened part 32 is provided on the first skin 10 and is used to indicate that the first skin 10 has been weakened; wherein, when the first skin 10 is in an unweakened state, the unweakened indicator 31 is connected to the first joint edge 11; when the first skin 10 is in a weakened state, the first skin 10 has the weakened part 32.
[0038] For the adoption of this solution, please refer to [link / reference]. Figure 1 and Figure 2 By providing a protruding unweakened indicator 31, the first skin 10 is indicated as not having undergone weakening treatment, allowing for differentiation of whether weakening treatment has been performed based on the external structure of the first skin 10, thus preventing the mixing of unweakened skins. Furthermore, the unweakened indicator 31 is located at and protrudes from the first joint edge 11. Since the first skin 10 and the second skin 20 are connected via the first joint edge 11 and the second joint edge 21, placing the unweakened indicator 31 at the joint edge of the two skins ensures that... When connecting the first skin 10 and the second skin 20, the presence of an unweakened indicator 31 can be detected in a timely manner, making the unweakened indicator 31 more obvious and less likely to be overlooked. If the unweakened indicator 31 is present when connecting the first skin 10 and the second skin 20, the first joint edge 11 and the second joint edge 21 will interfere, and it can be immediately determined that the first skin 10 used has not been weakened and is being misused. In summary, this solution can effectively improve the error prevention function of the skin assembly and avoid the mixing of unweakened and weakened skins.
[0039] In the embodiments, see Figure 1 and Figure 2 During the production process, when the first skin 10 is in an unweakened state, there is a protruding unweakened indicator 31 on the first joint edge 11 of the first skin 10. When the first skin 10 is weakened, the unweakened indicator 31 will be removed. Therefore, when the first skin 10 is in a weakened state, there is a weakened part 32 on the first skin 10 and no unweakened indicator 31.
[0040] In the embodiment, due to
[0041] In some embodiments, see Figure 1 and Figure 2 The first skin 10 also includes a first positioning part, which is disposed along the first joining edge 11; the second skin 20 also includes a second positioning part, which is disposed along the second joining edge 21. The first positioning part and the second positioning part are correspondingly disposed and used for positioning when the first skin 10 and the second skin 20 are connected. In this way, the first positioning part and the second positioning part are provided to position the first skin 10 and the second skin 20 during connection, so that the first skin 10 and the second skin 20 are connected according to the preset position to ensure accurate positioning during connection.
[0042] In some embodiments, see Figure 1 and Figure 2 The first positioning part and the second positioning part form at least two one-to-one corresponding positioning groups. In this way, the first positioning part and the second positioning part are corresponding structures, such as positioning holes or positioning notches. The corresponding first positioning part and the second positioning part need to be arranged and placed in a corresponding manner to form one-to-one corresponding positioning groups. At least two positioning groups can achieve accurate positioning of the relative positions of the first skin 10 and the second skin 20.
[0043] In some embodiments, see Figure 1 and Figure 2 The first positioning part includes a plurality of first notches 12 formed along the length direction of the first joining edge 11; the second positioning part includes a plurality of second notches 22 formed along the length direction of the second joining edge 21; the plurality of first notches 12 and the plurality of second notches 22 are arranged in a one-to-one correspondence. In this way, by setting a plurality of first notches 12 and a plurality of second notches 22 that are arranged in a one-to-one correspondence, the positioning of the first joining edge 11 and the second joining edge 21 can be performed by placing the corresponding first notches 12 and second notches 22, so a plurality of first notches 12 and second notches 22 are provided.
[0044] In the embodiments, see Figure 1 and Figure 2 The number of the first gap 12 and the second gap 22 can both be at least two, such as setting three first gaps 12 and three second gaps 22 with one-to-one correspondence, or setting seven first gaps 12 and seven second gaps 22 with one-to-one correspondence, etc.
[0045] In some embodiments, see Figure 1 and Figure 2 Multiple first notches 12 are equally spaced, and multiple second notches 22 are also equally spaced. In this way, the multiple first notches 12 and the multiple second notches 22 are equally spaced to facilitate the opening of the first notches 12 and the second notches 22 on the first joint edge 11 and the second joint edge 21 respectively, thereby reducing the processing cost of notch opening.
[0046] In some embodiments, see Figure 1 and Figure 2 Both the first notch 12 and the second notch 22 are V-shaped notches. This makes it easy to create the V-shaped notches. The top opening of the V-shape is located on the first joining edge 11 and the second joining edge 21, and the bottom tip of the V-shape is set away from the first joining edge 11 and the second joining edge 21. Therefore, when positioning, it is only necessary to align the top openings of the two V-shapes of at least two sets of corresponding first notches 12 and second notches 22 to position the first joining edge 11 and the second joining edge 21, so as to achieve the positioning when the first skin 10 and the second skin 20 are connected.
[0047] In some embodiments, see Figure 1 and Figure 2 The unweakened indicator 31 is sheet-shaped and located in the middle of two adjacent first notches 12. Thus, the position of the unweakened indicator 31 needs to be set so as not to affect other structures corresponding to the normal connection of the first skin 10. Therefore, the unweakened indicator 31 is placed in the middle of two adjacent first notches 12 to avoid the influence of the unweakened indicator 31 on the opening of the first notches 12.
[0048] In some embodiments, see Figure 2 The weakening portion 32 is located in the central region of the first skin 10, and the weakening portion 32 has an I-shaped structure. In this way, setting the weakening portion 32 as an I-shaped structure can achieve the effects of uniform stress distribution, improving tensile strength, providing a stable tear path, and adapting to complex stress conditions.
[0049] For details, see Figure 2 The two flanges of the I-shaped structure effectively disperse stress, making the stress distribution more uniform and reducing local stress concentration. When the airbag deploys, the force acting on the weakened line area can be more evenly distributed across the I-shaped structure, reducing the risk of tearing due to stress concentration. The I-shaped shape increases the tensile strength of the weakened part 32, making it more stable and reliable under tensile forces. This helps ensure that the weakened line tears in the predetermined area during airbag deployment without accidental breakage or damage. The I-shaped shape provides a clear path for the tearing process, allowing the tear to proceed stably along the predetermined weakened line. This stable tearing path helps the airbag deploy smoothly, ensuring it provides optimal protection as designed. The I-shaped shape allows it to adapt to complex stress conditions, maintaining good performance under tensile, compressive, or shear stress. This multi-directional stress adaptability helps the weakened line function reliably under various collision conditions.
[0050] In some embodiments, see Figure 1 The first joining edge 11 and the second joining edge 21 are linear edges of the same length. This facilitates improving the efficiency of the bonding arrangement of the first joining edge 11 and the second joining edge 21.
[0051] In the embodiments, see Figure 1 The first joining edge 11 and the second joining edge 21 can be connected by sewing.
[0052] A vehicle includes a non-low-tear skin assembly and an interior trim piece, the skin assembly covering the periphery of the interior trim piece.
[0053] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0054] 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 present 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. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0055] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.
Claims
1. A non-low-tear skin assembly, said skin assembly for covering interior trim and tearing upon bursting to allow airbag deployment, characterized in that, The skin component includes: A first skin (10) includes a first joint edge (11) located at the edge of the first skin (10); The second skin (20) includes a second joining edge (21), which is located at the edge of the second skin (20). The first joining edge (11) is correspondingly disposed with the second joining edge (21). The first skin (10) and the second skin (20) are connected by the connection between the first joining edge (11) and the second joining edge (21). An unweakened indicator (31) or a weakened part (32) is provided at the first joint edge (11) and protrudes from the first joint edge (11); the weakened part (32) is provided on the first epidermis (10) and is used to indicate that the first epidermis (10) has been weakened. When the first skin (10) is in an unweakened state, the unweakened indicator (31) is connected to the first joint edge (11); when the first skin (10) is in a weakened state, the first skin (10) has the weakened part (32).
2. The non-low-tear skin assembly according to claim 1, characterized in that, The first skin (10) further includes a first positioning part, which is disposed along the first joint edge (11); The second skin (20) further includes a second positioning part, which is disposed along the second joining edge (21). The first positioning part and the second positioning part are disposed correspondingly and used for positioning when the first skin (10) and the second skin (20) are connected.
3. The non-low-tear skin assembly according to claim 2, characterized in that, The first positioning part and the second positioning part form at least two one-to-one corresponding positioning groups.
4. The non-low-tear skin assembly according to claim 2, characterized in that, The first positioning part includes a plurality of first notches (12) opened along the length direction of the first joint edge (11); The second positioning part includes a plurality of second notches (22) opened along the length direction of the second joint edge (21); Multiple first gaps (12) and multiple second gaps (22) are provided in a one-to-one correspondence.
5. The non-low-tear skin assembly according to claim 4, characterized in that, The first gaps (12) are spaced at equal intervals, and the second gaps (22) are also spaced at equal intervals.
6. The non-low-tear skin assembly according to claim 4, characterized in that, Both the first gap (12) and the second gap (22) are V-shaped gaps.
7. The non-low-tear skin assembly according to claim 4, characterized in that, The unweakened indicator (31) is sheet-shaped and located in the middle of two adjacent first notches (12).
8. The non-low-tear skin assembly according to claim 1, characterized in that, The weakened portion (32) is located in the middle region of the first epidermis (10), and the weakened portion (32) has an I-shaped structure.
9. The non-low-tear skin assembly according to claim 1, characterized in that, The first joining edge (11) and the second joining edge (21) are linear edges of the same length.
10. A vehicle, characterized in that, The device includes a non-low-tear skin assembly as described in any one of claims 1 to 9, and also includes an interior trim piece, the skin assembly covering the outer periphery of the interior trim piece.