Reinforcing film for automobile

Abstract

The utility model relates to the field of reinforcing rubber sheets, and particularly discloses a reinforcing rubber sheet for an automobile, which comprises a reinforcing rubber sheet body, the reinforcing rubber sheet body comprises a rib layer, a buffer layer, an adhesion layer and a reinforcing layer, the reinforcing rubber sheet body is provided with an exhaust hole penetrating through the end faces of the upper side and the lower side of the reinforcing rubber sheet body, and bubble residues during adhesion can be effectively avoided; reinforcing parts are arranged on the two long edges of the reinforcing film body in the length direction, extend in the width direction of the reinforcing film body and are of an inverted trapezoidal structure, and the reinforcing parts on the two long edges are symmetrically distributed on the two sides of the horizontal central axis of the reinforcing film body, so that stress is dispersed in multiple directions, and the strength of the reinforcing film body is improved. Therefore, the damage resistance of the reinforcing film can be effectively improved, the bearing area of the reinforcing part on the edge can be effectively increased, the overall bearing capacity of the reinforcing part can be effectively improved, and deformation and damage are not prone to occurring.

Description

A reinforcing film for automobiles Technical Field

[0001] This utility model relates to the field of reinforcing films, and in particular to a reinforcing film for automobiles. Background Technology

[0002] In automobile manufacturing, localized reinforcement of the vehicle body structure is an important means of improving vehicle safety, durability, and NVH (noise, vibration, and harshness) performance. Currently, automotive reinforcement materials mainly use metal reinforcing plates, structural adhesives, or composite material reinforcing sheets.

[0003] Traditional reinforcement methods typically involve welding or bolting metal plates. While these methods offer high strength, they are also quite heavy; for example, the density of a 1mm thick steel plate is approximately 7.85g / cm³. 3 This increases the overall vehicle weight, affecting fuel economy. Furthermore, the inherent lack of elasticity in metal materials prevents them from effectively absorbing vibration energy during vehicle operation, causing vibrations to be directly transmitted to the body, increasing the risk of interior noise and abnormal rattles. Some manufacturers use fiberglass or carbon fiber reinforcement sheets to reduce weight, but if the structural design is unreasonable (e.g., excessive thickness), it still cannot meet the stringent requirements for lightweight vehicles. In addition, existing reinforcement materials typically employ a straight-edge design, which, under long-term vibration and temperature changes, is prone to warping, peeling, or even breakage in the edge areas, affecting the reinforcement effect. Summary of the Invention

[0004] The purpose of this invention is to provide a reinforcing film for automobiles, in order to solve the technical problems of existing reinforcing materials being heavy, having insufficient shock absorption performance, and being prone to edge failure.

[0005] To solve the above problems, this utility model provides a reinforcing film for automobiles, which adopts the following technical solution: including:

[0006] The reinforcing film body includes:

[0007] Musculoskeletal layer;

[0008] The buffer layer comprises two sets, which are symmetrically arranged on the upper and lower end faces of the rib layer.

[0009] An adhesive layer is located on the side of one of the buffer layers away from the musculoskeletal layer;

[0010] The reinforcement layer is located on the side of another set of buffer layers away from the musculoskeletal layer;

[0011] The reinforcing film body has vent holes that penetrate through its upper and lower end faces;

[0012] The reinforcing film body has reinforcement sections on both long sides along its length direction. The reinforcement sections extend along the width direction of the reinforcing film body and are configured as inverted trapezoidal structures. The reinforcement sections on the two long sides are symmetrically distributed about the horizontal central axis of the reinforcing film body.

[0013] Furthermore, the thickness of the reinforcing section is greater than the thickness of the reinforcing film body, forming a gradually thickened structure.

[0014] Furthermore, the gradual transition thickening structure is a local thickening of the rib layer in the reinforcing part; or, the gradual transition thickening structure is a composite thickening of the rib layer and the buffer layer in the reinforcing part.

[0015] Furthermore, the extension distance of the reinforcing part in the width direction is 1 / 8 to 1 / 4 of the width of the reinforcing film body.

[0016] Furthermore, the adhesive layer includes:

[0017] A magnetic layer is located on the side closest to the buffer layer;

[0018] The adhesive layer is located on the side away from the buffer layer.

[0019] Furthermore, the magnetic layer is a rubber layer doped with magnetic particles, and the adhesive layer is a pressure-sensitive adhesive layer.

[0020] Furthermore, the reinforcing layer is made of metal foil or fiber-reinforced composite material.

[0021] Furthermore, the reinforcing layer is made of carbon fiber composite material or glass fiber composite material.

[0022] Furthermore, the buffer layer is a porous elastic material layer with a porosity of 30%-50%.

[0023] Furthermore, the rib layer, buffer layer, reinforcing layer, and adhesive layer are integrally formed through a hot pressing process, creating an inseparable composite structure between the layers.

[0024] The beneficial effects of the reinforcing film for automobiles provided by this utility model are:

[0025] 1. This reinforcing film, through its optimized multi-layer composite structure design, effectively solves the problems of traditional reinforcing materials such as heavy weight, insufficient shock absorption performance, and easy edge failure, while improving installation convenience and long-term durability;

[0026] 2. The vent holes provide a channel for air bubbles to escape, effectively preventing air bubble residue during bonding and ensuring a tight adhesion between the adhesive layer and the vehicle body;

[0027] 3. The reinforcement can change the stress transmission path, effectively disperse stress, prevent cracks or damage at the edges due to excessive stress, and effectively increase the load-bearing area of ​​the reinforcement at the edges, thereby effectively improving the overall load-bearing capacity of the reinforcement, making it less prone to deformation and damage, and further improving the load-bearing capacity and fixing effect of the reinforcing film. Attached Figure Description

[0028] The above and other objects, features, and advantages of the present invention will become readily understood by reading the following detailed description of exemplary embodiments with reference to the accompanying drawings. In the drawings, several embodiments of the present invention are shown by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0029] Figure 1 is a top view of a reinforcing film for automobiles according to the present invention.

[0030] Figure 2 is a cross-sectional view of a reinforcing film for automobiles according to the present invention.

[0031] Figure 3 is a cross-sectional view of a reinforcing film for automobiles according to the present invention.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Reinforcing film body; 11. Rib layer; 12. Buffer layer; 13. Adhesive layer; 131. Magnetic layer; 132. Adhesive layer; 14. Reinforcing layer; 15. Vent hole;

[0034] 2. Strengthen the department. Detailed Implementation

[0035] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Those skilled in the art should understand that the embodiments described below are only some, not all, of the embodiments disclosed. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0036] The number of any elements in the accompanying drawings is for illustrative purposes only and not as a limitation, and any naming is for distinction only and has no limiting meaning.

[0037] The principles and spirit of this utility model will be explained in detail below with reference to several representative embodiments.

[0038] The present invention provides a reinforcing film for automobiles, as shown in Figures 1 to 3, comprising a reinforcing film body 1, which includes a rib layer 11, a buffer layer 12, an adhesive layer 13, and a reinforcing layer 14. Through an optimized multi-layer composite structure design, the reinforcing film can effectively solve the problems of traditional reinforcing materials such as large weight, insufficient shock absorption performance, and easy failure at the edges, while improving installation convenience and long-term durability.

[0039] In this embodiment, the reinforcing layer 11 serves as the core load-bearing layer and is made of carbon fiber composite material or glass fiber composite material. It features high strength and lightweight characteristics, ensuring the tensile strength and bending stiffness of the reinforcing film. Moreover, its weight is reduced by more than 50% compared to metal reinforcing plates, which helps improve the fuel economy and handling performance of automobiles.

[0040] In other embodiments, the reinforcing layer 11 may also be configured as a self-healing material made of a polymer-based composite material reinforced with shape memory alloy fibers.

[0041] In this embodiment, the buffer layer 12 includes two sets, which are symmetrically arranged on the upper and lower end faces of the rib layer 11. The buffer layer 12 is a porous elastic material layer with a porosity of 30%-50%. The buffer layer 12 absorbs vibration energy through pore compression, reducing the noise and impact transmitted to the vehicle body, which can significantly improve the shock absorption performance of the reinforcing film and improve the comfort of the in-vehicle driving environment.

[0042] In this embodiment, the adhesive layer 13 is disposed on the side of one of the buffer layers 12 away from the rib layer 11, and the adhesive layer 13 includes a magnetic layer 131 and an adhesive layer 132.

[0043] In this embodiment, the magnetic layer 131 is disposed on the side close to the buffer layer 12. The magnetic layer 131 is a rubber layer doped with magnetic particles. When the reinforcing film is close to the inner side of the outer panel of the car body or component (usually the outer panel is made of metal and has magnetic adsorption properties), the magnetic force generated by the magnetic layer 131 can adsorb the reinforcing film onto the outer panel to achieve pre-positioning and provide convenience for subsequent bonding operations.

[0044] In this embodiment, the adhesive layer 132 is disposed on the side away from the buffer layer 12. The adhesive layer 132 is a pressure-sensitive adhesive layer, which does not require heating to cure. It can be bonded to the working surface of the inner side of the outer panel at room temperature through the interaction force between molecules, which can effectively improve production efficiency. Before use, the surface of the adhesive layer 132 is covered with release paper, which can be torn off when using.

[0045] Through the above technical solution, the reinforcing film is fixed to the working surface by a combination of magnetic attraction and adhesive, which is equivalent to providing a double fixing force between the reinforcing film and the working surface, which can effectively improve the tightness of the fit and the strength of the adhesion between the reinforcing film and the working surface.

[0046] In this embodiment, the reinforcing layer 14 is disposed on the side of another set of buffer layers 12 away from the reinforcing layer 11, and is made of metal foil or fiber-reinforced composite material, which can effectively improve the puncture resistance and tear resistance of the reinforcing film, and enhance its reliability and durability in complex working environments.

[0047] In this embodiment, the reinforcing layer 11, buffer layer 12, strengthening layer 14, and adhesive layer 13 are integrally formed by hot pressing, forming an unpeelable composite structure between the layers, which can effectively improve the overall performance and stability of the reinforcing film.

[0048] It should be noted that during the process of fixing the reinforcing film to the inner side of the car body or component outer panel through the adhesive layer 13, since the adhesive layer 132 and the car body surface are not absolutely smooth, and a small amount of air may be introduced during the operation, this air will be trapped between the adhesive layer and the car body, thus forming air bubbles. In this embodiment, the reinforcing film body 1 is provided with vent holes 15 penetrating its upper and lower end faces, providing a channel for the air bubbles to escape, effectively avoiding air bubble residue during bonding, and ensuring that the adhesive layer is tightly bonded to the car body.

[0049] In other embodiments, the number, width, depth, and distribution of the exhaust holes 15 can be set according to the actual usage scenario to achieve the best exhaust effect.

[0050] During vehicle operation, the reinforcing film is subjected to various dynamic loads, such as vehicle body vibration and impact. In this embodiment, the reinforcing film body 1 is provided with a reinforcing part 2 on both long sides along its length direction. The reinforcing part 2 extends along the width direction of the reinforcing film body 1. The top view of the reinforcing part 2 is an inverted trapezoidal structure, and the reinforcing parts 2 on the two long sides are symmetrically distributed about the horizontal central axis of the reinforcing film body 1.

[0051] Through the above technical solution, the inclined side of the inverted trapezoid can change the stress transmission path, avoid the stress from changing drastically at the edge, thereby reducing the possibility of stress concentration, lowering the local stress level at the edge, preventing cracks or damage at the edge due to excessive stress, and the setting of the reinforcing part 2 can effectively increase the dimension of stress dispersion, so that the stress is dispersed in multiple directions, thereby effectively improving the damage resistance of the reinforcing film.

[0052] It should be noted that in this embodiment, the length of the reinforcing part 2 on the side away from the reinforcing film body 1 is relatively long, which can effectively increase the bearing area of ​​the reinforcing part 2 at the edge. When under force, more material participates in bearing the stress, thereby effectively improving the overall bearing capacity of the reinforcing part 2, making it less prone to deformation and damage. In addition, it can also increase the contact area between the reinforcing part 2 and the vehicle body. When the reinforcing film is fixed to the vehicle body through the adhesive layer 13, the larger contact area means stronger adhesion, which can further improve the bearing capacity and fixing effect of the reinforcing film.

[0053] In this embodiment, the extension distance of the reinforcing part 2 in the width direction is 1 / 8 to 1 / 4 of the width of the reinforcing film body 1.

[0054] In this embodiment, the thickness of the reinforcing part 2 is greater than the thickness of the reinforcing film body 1, which can effectively strengthen the edge area of ​​the reinforcing film to better withstand and disperse stress.

[0055] In this embodiment, the reinforcing part 2 forms a gradually thickened structure, which is a localized thickening of the rib layer 11 at the reinforcing part 2 as shown in Figure 2. Under stress, the thickened rib layer 11 can more effectively resist deformation and damage, improving the load-bearing capacity of the reinforcing film edge. When the reinforcing film is subjected to bending or tensile forces, the thickened rib layer 11 can better disperse stress, preventing the generation and propagation of cracks. Alternatively, the gradually thickened structure is a composite thickening of the rib layer 11 and the buffer layer 12 at the reinforcing part 2, as shown in Figure 3. This combines the high strength characteristics of the rib layer 11 and the energy absorption characteristics of the buffer layer 12. The thickening of the rib layer 11 enhances the load-bearing capacity, while the thickening of the buffer layer 12 further improves the shock absorption and energy absorption effects. When the reinforcing film is subjected to impact forces, the buffer layer 12 can absorb some of the energy first, and then the rib layer 11 bears the remaining stress, thereby better protecting the vehicle body structure. In other embodiments, the reinforcing part 2 can be configured with various thickening forms.

[0056] The present invention provides a reinforcing film for automobiles, which, through a multi-layer composite structure combined with a gradient edge reinforcement design, can significantly improve shock absorption performance and edge durability while ensuring lightweight design.

[0057] Based on the above description in this specification, those skilled in the art will also understand that the following terms used, such as "upper," "lower," "front," "rear," "left," "right," "width," "horizontal," "top," "bottom," "inner," and "outer," are terms indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings of this specification. They are only for the purpose of facilitating the explanation of the present invention and simplifying the description, and do not explicitly or implicitly suggest that the device or element involved must have the specific orientation, or be constructed and operated in a specific orientation. Therefore, the above-mentioned orientation or positional relationship terms should not be understood or interpreted as limitations on the present invention.

[0058] In addition, in the description of this specification, "multiple" means at least two, such as two, three or more, etc., unless otherwise expressly and specifically defined.

Claims

1. A reinforcing film for automobiles, characterized in that, include: The reinforcing film body includes: a reinforcing layer; The buffer layer comprises two sets, which are symmetrically arranged on the upper and lower end faces of the rib layer; an adhesive layer is provided on the side of one set of buffer layers away from the rib layer; a reinforcing layer is provided on the side of the other set of buffer layers away from the rib layer; the reinforcing film body has vent holes penetrating its upper and lower end faces; the reinforcing film body has reinforcing parts on both long sides along its length direction, the reinforcing parts extend along the width direction of the reinforcing film body, the reinforcing parts are set as inverted trapezoidal structures, and the reinforcing parts on the two long sides are symmetrically distributed about the horizontal central axis of the reinforcing film body.

2. The reinforcing film for automobiles according to claim 1, characterized in that, The thickness of the reinforcing section is greater than the thickness of the reinforcing film body, forming a gradually thickened structure.

3. The reinforcing film for automobiles according to claim 2, characterized in that, The gradual transition thickening structure is a local thickening of the rib layer in the reinforced part; or, the gradual transition thickening structure is a composite thickening of the rib layer and the buffer layer in the reinforced part.

4. A reinforcing film for automobiles according to claim 3, characterized in that, The reinforcement extends by 1 / 8 to 1 / 4 of the width of the reinforcing film body.

5. A reinforcing film for automobiles according to any one of claims 1 to 3, characterized in that, The adhesive layer includes: a magnetic layer disposed on the side close to the buffer layer; and an adhesive layer disposed on the side away from the buffer layer.

6. A reinforcing film for automobiles according to claim 5, characterized in that, The magnetic layer is a rubber layer doped with magnetic particles, and the adhesive layer is a pressure-sensitive adhesive layer.

7. A reinforcing film for automobiles according to any one of claims 1 to 3, characterized in that, The reinforcing layer is made of metal foil or fiber-reinforced composite material.

8. A reinforcing film for automobiles according to any one of claims 1 to 3, characterized in that, The rib layer is made of carbon fiber composite material or glass fiber composite material.

9. A reinforcing film for automobiles according to any one of claims 1 to 3, characterized in that, The buffer layer is a porous elastic material layer with a porosity of 30%-50%.

10. A reinforcing film for automobiles according to any one of claims 1 to 3, characterized in that, The rib layer, buffer layer, reinforcing layer, and adhesive layer are integrally formed through a hot pressing process, creating an inseparable composite structure between the layers.

Images