Airbag cover and steering wheel

Abstract

The application provides a safety airbag cover plate and a steering wheel, and relates to the technical field of airbag cover plates.The safety airbag cover plate comprises a cover plate body and a flexible reinforcing layer.The surface of the cover plate body is provided with the flexible reinforcing layer, and / or the inside of the cover plate body is provided with the flexible reinforcing layer.Through the addition of the flexible reinforcing layer, the structural strength of the cover plate body can be improved, and the cover plate body is not prone to excessive tearing to generate debris.Furthermore, the flexible reinforcing layer does not increase the unfolding difficulty of the cover plate body, is suitable for point explosion conditions of different temperatures, and is safe and reliable.

Description

Technical Field

[0001] This utility model relates to the field of airbag cover technology, and in particular to a safety airbag cover and a steering wheel. Background Technology

[0002] When an airbag cover deploys, it must deploy quickly and not detach after deployment to prevent debris from injuring occupants. The ease with which an airbag cover deploys varies under different temperature conditions, with deployment being more difficult in low temperatures than in high temperatures. To ensure rapid opening under different detonation conditions, the cover is typically weakened. Weakening reduces the difficulty of deployment. However, excessive weakening can increase the risk of the cover detaching and generating debris. Ensuring that the weakened cover can deploy quickly without excessive tearing and debris generation is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0003] The purpose of this utility model is to provide an airbag cover and steering wheel that can ensure that the airbag cover can be deployed smoothly and quickly in an emergency, while reducing the risk of excessive tearing and detachment during deployment.

[0004] In a first aspect, this utility model provides an airbag cover, comprising:

[0005] Cover plate body;

[0006] A flexible reinforcing layer is provided on the surface of the cover plate body, and / or the flexible reinforcing layer is provided inside the cover plate body.

[0007] In an optional embodiment, the thickness of the flexible reinforcing layer is 10% to 80% of the thickness of the cover plate body.

[0008] In an optional embodiment, the flexible reinforcing layer is disposed inside the cover plate body; along the thickness direction of the flexible reinforcing layer, the distance between the flexible reinforcing layer and the surface of the cover plate body is 20% to 80% of the thickness of the cover plate body.

[0009] In an optional embodiment, the cover plate body includes a fixing part, a hinge part, and a folding part connected in sequence. The cover plate body has a weakening line formed along the edge of the folding part. When the weakening line is broken, the folding part can rotate relative to the fixing part around the hinge part. The hinge part is provided with the flexible reinforcing layer.

[0010] In an optional implementation, the weakening line includes a start point and an end point, and the flexible reinforcing layer is disposed on the line connecting the start point and the end point.

[0011] In an optional embodiment, the length of the flexible reinforcing layer in the first direction is 5%-95% of the length of the straight line segment connecting the starting point and the ending point; the first direction is the direction of the line connecting the starting point and the ending point.

[0012] In an optional embodiment, the length of the flexible reinforcing layer in the second direction is not less than 3 mm; the first direction is the direction of the line connecting the starting point and the ending point, and the second direction is perpendicular to the first direction.

[0013] In an optional embodiment, the cover plate body is provided with a decorative element, and a transition portion is formed at the connection between the cover plate body and the decorative element, and the transition portion is provided with the flexible reinforcing layer.

[0014] In an optional embodiment, the decorative element and the cover plate body are connected to form multiple connection points, and the multiple connection points enclose a fixed area; the edge of the flexible reinforcing layer does not intersect with the fixed area;

[0015] The cover plate body includes a folded portion, and the decorative element is disposed on the folded portion; the cover plate body has a weakening line formed along the edge of the folded portion, and the edge of the flexible reinforcing layer does not extend beyond the weakening line.

[0016] In an optional embodiment, the cross-section of the flexible reinforcing layer is Z-shaped.

[0017] In an optional embodiment, the surface and / or interior of the cover plate body are provided with positioning elements, and the flexible reinforcing layer is disposed on the positioning elements.

[0018] In an optional embodiment, the projected area of ​​the flexible reinforcing layer on the positioning member is less than or equal to the area of ​​the positioning member; or, the projected portion of the flexible reinforcing layer on the positioning member extends beyond the positioning member.

[0019] In an optional embodiment, the thickness of the positioning element is greater than or equal to the thickness of the flexible reinforcing layer; and / or, the thickness of the positioning element is 10% to 80% of the thickness of the cover plate body.

[0020] In an optional embodiment, the flexible reinforcing layer is disposed on the surface and / or inside the positioning member.

[0021] In an optional embodiment, the positioning element is disposed inside the cover plate body, and the distance between the positioning element and the surface of the cover plate body is greater than or equal to 20% of the thickness of the cover plate body.

[0022] In an optional embodiment, the cover plate body includes a fixing part, a hinge part, and a folding part connected in sequence. The cover plate body has a weakening line formed along the edge of the folding part. When the weakening line is broken, the folding part can rotate relative to the fixing part around the hinge part. The folding part is provided with a decorative element, and a transition part is formed at the connection between the folding part and the decorative element.

[0023] The positioning element is provided in at least one of the hinge portion and the transition portion.

[0024] In an optional embodiment, the hinge portion is provided with the positioning member; the weakening line includes a starting point and an ending point, and the positioning member is located on the line connecting the starting point and the ending point.

[0025] In an optional embodiment, the length of the positioning element in the first direction is 5%-95% of the length of the straight line segment connecting the starting point and the ending point; the first direction is the direction of the line connecting the starting point and the ending point.

[0026] In an optional embodiment, the length of the positioning member in the second direction is not less than 2 mm; the first direction is the direction of the line connecting the starting point and the ending point, and the second direction is perpendicular to the first direction.

[0027] In an optional embodiment, the transition portion is provided with the positioning member; the edge of the positioning member does not extend beyond the weakening line; the decorative member and the folded portion are connected to form a plurality of connection points, and the plurality of connection points enclose a fixed area; the edge of the positioning member does not intersect with the fixed area.

[0028] In an optional embodiment, the positioning element has a Z-shaped cross-section.

[0029] In an optional embodiment, the material of the positioning element is the same as the material of the cover plate body.

[0030] In an optional implementation, the flexible reinforcing layer adopts a mesh structure.

[0031] In an optional embodiment, the flexible reinforcing layer is made of any one or more materials selected from aramid, polyester, nylon, polypropylene, and acrylic.

[0032] Secondly, the present invention provides a steering wheel, including an airbag cover as described in any of the foregoing embodiments.

[0033] The airbag cover and steering wheel provided in this embodiment of the utility model have the following beneficial effects:

[0034] The airbag cover provided in this embodiment adds a flexible reinforcing layer to the cover body, increasing the connection strength and toughness of the cover body. This not only does not increase the difficulty of opening the cover body, but also ensures that the cover body will not tear excessively and fall off, thereby improving the safety and reliability of the cover body.

[0035] The steering wheel provided in this embodiment of the utility model includes the aforementioned airbag cover, which neither increases the difficulty of opening the cover body nor causes injury from debris due to excessive tearing, making it safe and reliable. Attached Figure Description

[0036] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0037] Figure 1 This is a schematic diagram of the first disassembled structure of the airbag cover provided in an embodiment of the present utility model;

[0038] Figure 2 A schematic diagram of a structure in which a flexible reinforcing layer is provided inside the cover body of an airbag cover provided in an embodiment of the present utility model;

[0039] Figure 3 A schematic diagram of the first distribution structure of the flexible reinforcing layer on the cover body in the airbag cover provided in this embodiment of the utility model;

[0040] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure at point BB;

[0041] Figure 5 for Figure 4 A magnified view of a portion of point M in the middle;

[0042] Figure 6 This is a schematic diagram of a second split structure of the airbag cover provided in an embodiment of the present utility model;

[0043] Figure 7 A schematic diagram of a second distribution structure of the flexible reinforcing layer on the cover body in an airbag cover provided in an embodiment of this utility model;

[0044] Figure 8 for Figure 7 Schematic diagram of the cross-sectional structure at point DD;

[0045] Figure 9 for Figure 8A magnified view of a portion of point K;

[0046] Figure 10 A schematic diagram of the third split structure of the airbag cover provided in this embodiment of the utility model;

[0047] Figure 11 A schematic diagram of the first distribution structure of the positioning element on the cover body of the airbag cover provided in an embodiment of the present utility model;

[0048] Figure 12 for Figure 11 Schematic diagram of the cross-sectional structure at point CC;

[0049] Figure 13 for Figure 12 A magnified view of a portion of point J in the middle;

[0050] Figure 14 This is a schematic diagram of the fourth disassembled structure of the airbag cover provided in an embodiment of the present utility model;

[0051] Figure 15 A schematic diagram of a second distribution structure of the positioning element on the cover body in an airbag cover provided in an embodiment of this utility model;

[0052] Figure 16 for Figure 15 Schematic diagram of the cross-sectional structure at the middle EE;

[0053] Figure 17 for Figure 16 A magnified view of a portion of point H in the middle;

[0054] Figure 18 A schematic diagram of a disassembled steering wheel including an airbag cover, provided for an embodiment of this utility model.

[0055] Icons: 100-Airbag cover; 110-Cover body; 111-First surface; 112-Second surface; 121-Fixing part; 122-Hinge part; 123-Folding part; 124-Weakening line; 125-Start point; 126-End point; 127-Transition part; 130-Flexible reinforcement layer; 140-Decorative part; 141-Connection point; 150-Positioning part; 200-Steering wheel; 210-Steering wheel frame. Detailed Implementation

[0056] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0057] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0058] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0059] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model 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 utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0060] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0061] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0062] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0063] This utility model provides an airbag cover that, upon deployment, does not increase deployment resistance, is relatively easy to deploy, and is adaptable to different temperature-dependent detonation conditions. Furthermore, it avoids excessive tearing and the generation of debris, ensuring safety and reliability. This airbag cover can be used in vehicles, such as being installed on the steering wheel or other interior components; specific applications are not limited here.

[0064] Please combine Figure 1 and Figure 2 The airbag cover 100 includes a cover body 110 and a flexible reinforcing layer 130. The flexible reinforcing layer 130 is provided on the surface of the cover body 110, and / or, the flexible reinforcing layer 130 is provided inside the cover body 110. By adding the flexible reinforcing layer 130, the structural strength of the cover body 110 can be improved, making it less prone to excessive tearing and debris generation. Furthermore, the flexible reinforcing layer 130 does not increase the difficulty of deploying the cover body 110, making it suitable for detonation conditions at different temperatures, ensuring safety and reliability.

[0065] It is understood that the surface of the cover body 110 includes an inner first surface 111 and an outer second surface 112. The flexible reinforcing layer 130 can be disposed inside the cover body 110, i.e., between the first surface 111 and the second surface 112. Alternatively, the flexible reinforcing layer 130 can be disposed on either the first surface 111 or the second surface 112 of the cover body 110, or the first surface 111 and the second surface 112 can each have a flexible reinforcing layer 130. Alternatively, the cover body 110 can have flexible reinforcing layers 130 both inside and on its surface.

[0066] In this embodiment, the flexible reinforcing layer 130 is made of any one or more flexible materials selected from aramid, polyester, nylon, polypropylene, and acrylic fibers. Aramid includes, but is not limited to, fully para-aramid or fully meta-aramid fibers; polyester may include, but is not limited to, polyethylene terephthalate fibers; nylon may include, but is not limited to, polyamide or polylactam fibers; polypropylene includes, but is not limited to, polypropylene fibers; and acrylic fibers include, but are not limited to, polyacrylonitrile fibers. Optionally, the flexible reinforcing layer 130 has a mesh structure, for example, formed using the above materials through a weaving process, which can improve the toughness and flexibility of the flexible reinforcing layer 130. It is understood that the flexible material used in the flexible reinforcing layer 130 does not increase the difficulty and resistance of opening the cover body 110, while possessing a breaking strength far exceeding that of the TPO material used in the cover body 110, effectively solving the problem of excessive tearing of the cover body 110.

[0067] Optionally, the cover plate body 110 has a thickness of 2.5 mm to 3.5 mm. The thickness of the flexible reinforcing layer 130 is 10% to 80% of the thickness of the cover plate body 110, which can effectively increase the tensile strength of the cover plate body 110.

[0068] Optionally, the flexible reinforcing layer 130 is disposed inside the cover body 110, without affecting the appearance quality of the cover body 110. Along the thickness direction of the flexible reinforcing layer 130, the distance between the flexible reinforcing layer 130 and the surface of the cover body 110 is 20% to 80% of the thickness of the cover body 110. It can be understood that the distance between the side of the flexible reinforcing layer 130 closest to the first surface 111 and the first surface 111 is D1, and the distance between the side of the flexible reinforcing layer 130 closest to the second surface 112 and the second surface 112 is D2, where D1 and D2 are respectively 20% to 80% of the thickness of the cover body 110. In this way, the appearance quality of the cover body 110 is not affected, while the structural strength of the cover body 110 is improved, preventing excessive tearing.

[0069] Please combine Figures 3 to 5 Optionally, the cover plate body 110 includes a fixing part 121, a hinge part 122, and a folding part 123 connected in sequence. A weakening line 124 is formed along the edge of the folding part 123. When the weakening line 124 is broken, the folding part 123 can rotate relative to the fixing part 121 around the hinge part 122. Thus, in an emergency, the folding part 123 can rotate around the hinge part 122 and unfold outwards, providing space for the airbag to inflate and facilitating its smooth operation. In this embodiment, the hinge part 122 is provided with a flexible reinforcing layer 130, which increases the structural strength of the hinge part 122 without increasing the rotational resistance of the folding part 123, ensuring that the folding part 123 can unfold smoothly outwards in an emergency.

[0070] Optionally, the weakening line 124 formed along the edge of the folded portion 123 includes a starting point 125 and an ending point 126, and the flexible reinforcing layer 130 is disposed on the line connecting the starting point 125 and the ending point 126. It can be understood that the hinge portion 122 of the cover plate body 110 is the junction of the folded portion 123 and the fixing portion 121. The flexible reinforcing layer 130, disposed on the line connecting the starting point 125 and the ending point 126 of the weakening line 124, can effectively improve the structural strength of the hinge portion 122 and prevent excessive tearing that could lead to debris.

[0071] Optionally, the length of the flexible reinforcing layer 130 in the first direction is 5%-95% of the length of the straight line segment connecting the starting point 125 and the ending point 126; the first direction is the direction of the line connecting the starting point 125 and the ending point 126.

[0072] Optionally, the flexible reinforcing layer 130 has a length of not less than 3 mm in the second direction. The first direction is the direction of the line connecting the starting point 125 and the ending point 126, and the second direction is perpendicular to the first direction. For example... Figure 3 In the diagram, the first direction is the Y direction, and the second direction is the X direction.

[0073] Optionally, the cover plate body 110 can be formed by injection molding. In the injection molding process of the cover plate body 110, the flexible reinforcing layer 130 can be injection molded together with the hinge portion 122 of the cover plate body 110 in the form of an insert.

[0074] Please combine Figures 6 to 9 Optionally, the cover body 110 is provided with a decorative element 140, and a transition portion 127 is formed at the connection between the cover body 110 and the decorative element 140. The transition portion 127 is provided with a flexible reinforcing layer 130. In this way, the flexible reinforcing layer 130 can improve the structural strength of the transition portion 127 and reduce the risk of excessive tearing at the transition portion 127. The decorative element 140 includes, but is not limited to, decorative badges, company emblems, or other accessories.

[0075] In this embodiment, the decorative element 140 is disposed on the folded portion 123. The decorative element 140 and the cover plate body 110 are connected to form a plurality of connection points 141, which together form a fixing area. If the folded portion 123 and the decorative element 140 are welded, the connection points 141 include a plurality of weld points formed on the folded portion 123, which together form a fixing area. If the folded portion 123 and the decorative element 140 are snap-fit ​​connected, the connection points 141 include a plurality of snap-fit ​​positions formed on the folded portion 123, which together form a fixing area. The shape of the flexible reinforcing layer 130 is designed according to the shape of the decorative element 140. It can be understood that the cover plate body 110 has a weakening line 124 formed along the edge of the folded portion 123. As long as the edge of the flexible reinforcing layer 130 does not exceed the weakening line 124, the edge of the flexible reinforcing layer 130 does not intersect with the fixing area.

[0076] It should be noted that, in order to avoid appearance defects such as shrinkage on the outer surface of the cover plate body 110 caused by changes in thickness, the thickness at the connection between the cover plate body 110 and the decorative part 140 is consistent with the original thickness of the cover plate body 110, that is, a Z-shaped cross section is formed at the transition part 127. In order to adapt to the Z-shaped cross section, the cross section of the flexible reinforcing layer 130 at the transition part 127 is set in a Z-shape.

[0077] It is worth noting that after the decorative element 140 is provided on the folding part 123, the decorative element 140 increases the weight of the folding part 123, affecting the difficulty of unfolding the folding part 123. In this embodiment, a flexible reinforcing layer 130 is provided on the hinge part 122, which can better accommodate the influence of the weight of the decorative element 140. That is, regardless of the weight or size of the decorative element 140, the flexible reinforcing layer 130 on the hinge part 122 can take into account both the difficulty of opening the folding part 123 and the problem of excessive tearing.

[0078] It should be noted that in this embodiment, at least one of the hinge portion 122 of the cover plate body 110 and the transition portion 127 connected to the decorative member 140 is provided with a flexible reinforcing layer 130. The flexible reinforcing layer 130 may be provided only in the hinge portion 122, or only in the transition portion 127, or both the hinge portion 122 and the transition portion 127 may be provided with flexible reinforcing layers 130. Of course, in some other embodiments, the flexible reinforcing layer 130 may also be provided in other parts of the cover plate body 110 to improve the local structural strength and prevent excessive tearing and debris generation. The shape and size of the flexible reinforcing layer 130 in different parts can be flexibly designed according to actual needs, and are not specifically limited here.

[0079] Optional, combined Figures 10 to 13 The cover plate body 110 is provided with a positioning element 150, and a flexible reinforcing layer 130 is disposed on the positioning element 150. Because the material of the flexible reinforcing layer 130 is relatively soft, positioning it during injection molding into the cover plate body 110 is difficult, and it is prone to deformation. By setting the positioning element 150, the positioning accuracy of the flexible reinforcing layer 130 within the cover plate body 110 can be improved, and it is less prone to deformation, effectively improving the local structural strength of the cover plate body 110.

[0080] Optionally, a positioning element 150 is provided on the surface and / or inside of the cover plate body 110. The positioning element 150 can be provided on the surface of the cover plate body 110, or inside the cover plate body 110, or both the inside and the surface of the cover plate body 110 are provided with positioning elements 150. The projected area of ​​the flexible reinforcing layer 130 on the positioning element 150 is less than or equal to the area of ​​the positioning element 150; or, the projected portion of the flexible reinforcing layer 130 on the positioning element 150 extends beyond the positioning element 150. It should be noted that the positioning element 150 is generally sheet-shaped, and the area of ​​the positioning element 150 here is the area of ​​one side of the sheet-shaped positioning element 150. As long as the flexible reinforcing layer 130 is connected to the positioning element 150, it is convenient to inject the flexible reinforcing layer 130 into the cover plate body 110. The flexible reinforcing layer 130 can be completely located on the positioning element 150, or it can partially extend beyond the positioning element 150, as long as the flexible reinforcing layer 130 does not extend beyond the outer surface of the cover plate body 110. In this embodiment, the edge of the flexible reinforcing layer 130 does not extend beyond the positioning member 150. This arrangement can provide better support and positioning for the flexible reinforcing layer 130.

[0081] Optionally, the flexible reinforcing layer 130 is first injection molded into the positioning element 150. Then, during the injection molding of the cover plate body 110, the positioning element 150 with the flexible reinforcing layer 130 is injection molded into the cover plate body 110 as well. The material of the positioning element 150 is the same as that of the cover plate body 110. This improves the bonding between the positioning element 150 and the cover plate body 110 during injection molding, avoiding problems such as delamination and warping due to differences in thermal expansion coefficients caused by different materials. In other embodiments, the flexible reinforcing layer 130 and the positioning element 150 can also be connected by methods such as bonding, snap-fitting, screw fixing, braiding, or pressing; specific limitations are not specified here.

[0082] Optionally, the thickness of the positioning element 150 is greater than or equal to the thickness of the flexible reinforcing layer 130. The thickness of the positioning element 150 is 10% to 80% of the thickness of the cover plate body 110, which can effectively provide support and positioning, fully utilizing the function of the flexible reinforcing layer 130. Optionally, the flexible reinforcing layer 130 is disposed on the surface and / or inside the positioning element 150. The flexible reinforcing layer 130 can be disposed on the surface of the positioning element 150 or inside the positioning element 150. Alternatively, the flexible reinforcing layer 130 can be disposed on both the surface and inside of the positioning element 150.

[0083] Optionally, if the positioning element 150 is located inside the cover plate body 110, the distance between the positioning element 150 and the surface of the cover plate body 110 is greater than or equal to 20% of the thickness of the cover plate body 110. This can improve the appearance quality of the surface of the cover plate body 110.

[0084] Optionally, at least one of the hinge portion 122 and the transition portion 127 is provided with a positioning member 150. The positioning member 150 is provided on the hinge portion 122, or on the transition portion 127, or both the hinge portion 122 and the transition portion 127 are provided with positioning members 150. If the positioning member 150 is provided on the hinge portion 122, the positioning member 150 is located on the line connecting the starting point 125 and the ending point 126 of the weakening line 124. Optionally, the length of the positioning member 150 in a first direction is 5%-95% of the length of the straight line segment connecting the starting point 125 and the ending point 126; the first direction is the direction of the line connecting the starting point 125 and the ending point 126.

[0085] Optionally, the length of the positioning element 150 in the second direction is not less than 2 mm. The first direction is the direction of the line connecting the starting point 125 and the ending point 126, and the second direction is perpendicular to the first direction.

[0086] Combination Figures 14 to 17If the positioning element 150 is located on the transition portion 127 where the decorative element 140 is installed, the edge of the positioning element 150 does not extend beyond the weakening line 124. The decorative element 140 and the folded portion 123 are connected to form multiple connection points 141, which enclose a fixing area; the edge of the positioning element 150 does not intersect with the fixing area. Optionally, the positioning element 150 has a Z-shaped cross-section to accommodate the design of the cover plate body 110 having a constant thickness in the transition portion 127, avoiding surface shrinkage of the cover plate body 110 caused by thickness differences. Furthermore, the Z-shaped cross-section of the positioning element 150 makes positioning easier, making the connection between the positioning element 150 and the cover plate body 110 more stable, and also helps to further improve the structural strength at the transition portion 127.

[0087] Please combine Figure 18 This utility model embodiment also provides a steering wheel 200, including a steering wheel frame 210 and an airbag cover 100 as described in any of the foregoing embodiments. The airbag cover 100 is mounted on the steering wheel frame 210.

[0088] In summary, the airbag cover 100 and steering wheel 200 provided in this embodiment of the present invention have the following beneficial effects, including:

[0089] The airbag cover 100 provided in this embodiment of the utility model adds a flexible reinforcing layer 130 to the cover body 110, increasing the connection strength and toughness of the cover body 110. This not only does not increase the difficulty of opening the cover body 110, but also ensures that the cover body 110 will not tear excessively and fall off, improving the safety and reliability of the cover body 110 and completely solving the problem of tearing of the cover body 110 during detonation under different temperature conditions. The flexible reinforcing layer 130 can be provided at the hinge portion 122 of the cover body 110, or at the transition portion 127 where the decorative part 140 is installed. Alternatively, it can be applied to other areas of the cover body 110 that require local reinforcement. The flexible reinforcing layer 130 can be directly injection molded onto the cover body 110, or a positioning part 150 with the flexible reinforcing layer 130 can be prepared first, and then the positioning part 150 can be injection molded onto the cover body 110 to improve the positioning accuracy and structural stability of the flexible reinforcing layer 130.

[0090] The steering wheel 200 provided in this embodiment of the utility model includes the aforementioned airbag cover 100, which neither increases the difficulty of opening the cover body 110 nor causes the problem of debris injury due to excessive tearing, making it safe and reliable.

[0091] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. Any modifications, equivalent substitutions, improvements, etc., should be included within the protection scope of this utility model.

Claims

1. An airbag cover, characterized in that, include: Cover plate body (110); A flexible reinforcing layer (130) is provided on the surface of the cover plate body (110), and / or the flexible reinforcing layer (130) is provided inside the cover plate body (110).

2. The airbag cover according to claim 1, characterized in that, The thickness of the flexible reinforcing layer (130) is 10% to 80% of the thickness of the cover plate body (110).

3. The airbag cover according to claim 1, characterized in that, The flexible reinforcing layer (130) is disposed inside the cover plate body (110); along the thickness direction of the flexible reinforcing layer (130), the distance between the flexible reinforcing layer (130) and the surface of the cover plate body (110) is 20% to 80% of the thickness of the cover plate body (110).

4. The airbag cover according to claim 1, characterized in that, The cover plate body (110) includes a fixing part (121), a hinge part (122) and a folding part (123) connected in sequence. The cover plate body (110) has a weakening line (124) formed along the edge of the folding part (123). When the weakening line (124) is broken, the folding part (123) can rotate relative to the fixing part (121) around the hinge part (122). The hinge part (122) is provided with the flexible reinforcing layer (130).

5. The airbag cover according to claim 4, characterized in that, The weakening line (124) includes a starting point (125) and an ending point (126), and the flexible reinforcing layer (130) is disposed on the line connecting the starting point (125) and the ending point (126).

6. The airbag cover according to claim 5, characterized in that, The length of the flexible reinforcing layer (130) in the first direction is 5%-95% of the length of the straight line segment connecting the starting point (125) and the ending point (126); the first direction is the direction of the line connecting the starting point (125) and the ending point (126).

7. The airbag cover according to claim 5, characterized in that, The length of the flexible reinforcing layer (130) in the second direction is not less than 3 mm; the first direction is the line connecting the starting point (125) and the ending point (126), and the second direction is perpendicular to the first direction.

8. The airbag cover according to claim 1, characterized in that, The cover plate body (110) is provided with a decorative element (140), and a transition portion (127) is formed at the connection between the cover plate body (110) and the decorative element (140), and the transition portion (127) is provided with the flexible reinforcing layer (130).

9. The airbag cover according to claim 8, characterized in that, The decorative element (140) and the cover plate body (110) are connected to form a plurality of connection points (141), and the plurality of connection points (141) enclose a fixed area; the edge of the flexible reinforcing layer (130) does not intersect with the fixed area; The cover plate body (110) includes a folded portion (123), and the decorative element (140) is disposed on the folded portion (123); the cover plate body (110) has a weakening line (124) formed along the edge of the folded portion (123), and the edge of the flexible reinforcing layer (130) does not extend beyond the weakening line (124).

10. The airbag cover according to claim 8, characterized in that, The cross-section of the flexible reinforcing layer (130) is Z-shaped.

11. The airbag cover according to claim 1, characterized in that, The cover plate body (110) is provided with a positioning element (150) on its surface and / or inside, and the flexible reinforcing layer (130) is provided on the positioning element (150).

12. The airbag cover according to claim 11, characterized in that, The projected area of ​​the flexible reinforcing layer (130) on the positioning member (150) is less than or equal to the area of ​​the positioning member; or, the projected portion of the flexible reinforcing layer (130) on the positioning member (150) extends beyond the positioning member (150).

13. The airbag cover according to claim 11, characterized in that, The thickness of the positioning element (150) is greater than or equal to the thickness of the flexible reinforcing layer (130); and / or, the thickness of the positioning element (150) is 10% to 80% of the thickness of the cover plate body (110).

14. The airbag cover according to claim 11, characterized in that, The flexible reinforcing layer (130) is disposed on the surface and / or inside the positioning member (150).

15. The airbag cover according to claim 11, characterized in that, The positioning element (150) is located inside the cover plate body (110), and the distance between the positioning element (150) and the surface of the cover plate body (110) is greater than or equal to 20% of the thickness of the cover plate body (110).

16. The airbag cover according to claim 11, characterized in that, The cover plate body (110) includes a fixing part (121), a hinge part (122), and a folding part (123) connected in sequence. The cover plate body (110) has a weakening line (124) formed along the edge of the folding part (123). When the weakening line (124) is broken, the folding part (123) can rotate relative to the fixing part (121) around the hinge part (122). The folding part (123) is provided with a decorative piece (140), and a transition part (127) is formed at the connection between the folding part (123) and the decorative piece (140). At least one of the hinge portion (122) and the transition portion (127) is provided with the positioning element (150).

17. The airbag cover according to claim 16, characterized in that, The hinge (122) is provided with the positioning member (150); the weakening line (124) includes a starting point (125) and an ending point (126), and the positioning member (150) is located on the line connecting the starting point (125) and the ending point (126).

18. The airbag cover according to claim 17, characterized in that, The length of the positioning element (150) in the first direction is 5%-95% of the length of the straight line segment connecting the starting point (125) and the ending point (126); the first direction is the direction of the line connecting the starting point (125) and the ending point (126).

19. The airbag cover according to claim 17, characterized in that, The length of the positioning element (150) in the second direction is not less than 2 mm; the first direction is the line connecting the starting point (125) and the ending point (126), and the second direction is perpendicular to the first direction.

20. The airbag cover according to claim 16, characterized in that, The transition portion (127) is provided with the positioning element (150); the edge of the positioning element (150) does not extend beyond the weakening line (124); the decorative element (140) and the folding portion (123) are connected to form a plurality of connection points (141), and the plurality of connection points (141) enclose a fixed area; the edge of the positioning element (150) does not intersect with the fixed area.

21. The airbag cover according to claim 20, characterized in that, The positioning element (150) has a Z-shaped cross-section.

22. The airbag cover according to claim 11, characterized in that, The material of the positioning element (150) is the same as the material of the cover plate body (110).

23. The airbag cover according to claim 1, characterized in that, The flexible reinforcing layer (130) adopts a grid structure.

24. The airbag cover according to any one of claims 1 to 23, characterized in that, The flexible reinforcing layer (130) is made of any one of the following materials: aramid, polyester, nylon, polypropylene, and acrylic.

25. A steering wheel, characterized in that, Includes the airbag cover as described in any one of claims 1 to 24.

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