Wide-temperature weather-proof EVA front wall protection plate

Abstract

The utility model discloses a wide-temperature weather-proof EVA front wall protection plate, which relates to the technical field of automobile body structures, and comprises an EVA protection plate body, the outer side of the EVA protection plate body is coated with a wide-temperature weather-proof coating, the wide-temperature weather-proof coating comprises a weather-proof shielding layer, a mechanical enhancement layer and a base material bonding layer, the outer side of the EVA protection plate body is coated with the base material bonding layer, and the weather-proof shielding layer is coated with a weather-proof shielding layer. And the outer side of the base material bonding layer is coated with the mechanical enhancement layer. According to the utility model, the three layers of composite coatings are subjected to material performance gradient design, a cross-layer energy dissipation network and interface chemical bonding reinforcement, so that a wide-temperature weather-proof protection system of outer shielding, middle buffering and inner anchoring is constructed. In circulation at the temperature ranging from-40 DEG C to 80 DEG C, all the layers play an independent function, overall performance gain is formed through component interpenetration and structure synergy, the service life of the front wall protection plate in severe environments such as extremely cold high temperature, rain, snow, salt mist and the like is prolonged, and the scheme is remarkably superior to a traditional single-layer coating scheme.

Description

Technical Field

[0001] This utility model relates to the field of automotive body structure technology, and in particular to a wide-temperature weather-resistant EVA front bulkhead protective plate. Background Technology

[0002] The front bulkhead is a crucial protective component in a car's body structure, typically installed at the front of the vehicle, specifically in the area between the engine compartment and the passenger compartment. It plays a vital role during vehicle operation. From a physical protection perspective, the front bulkhead blocks flying debris such as stones and mud, preventing direct impact to critical components in the engine compartment, such as pipelines and electronic components, reducing wear and tear and the risk of malfunction. In terms of environmental protection, it effectively resists the intrusion of rainwater and dust, preventing moisture or corrosion of core components such as the engine and transmission, extending their service life.

[0003] For example, Chinese Patent Publication No. CN206926726U discloses a front bulkhead protective panel and a vehicle, relating to the field of automotive body structure technology. The front bulkhead protective panel includes an EVA protective panel body, which comprises a connecting main board and a connecting arm integrally formed with the connecting main board, the connecting main board and the connecting arm forming a preset angle; wherein the connecting main board forms a semi-closed cavity. The vehicle includes a front bulkhead, a front longitudinal beam, an A-pillar lower pillar, and the aforementioned front bulkhead protective panel; wherein the connecting main board is connected to the root of the front bulkhead and the front longitudinal beam respectively, the interior of the semi-closed cavity facing the front bulkhead; the connecting arm is connected to the front bulkhead and the A-pillar lower pillar respectively.

[0004] When a car travels on extremely cold roads in the north, the low temperatures cause the protective panel material to harden and become brittle, significantly reducing its flexibility and impact resistance. In this state, when the vehicle is struck by stones or vibrates due to road bumps, the protective panel is less able to absorb energy through its own deformation, making it prone to cracking and damage from stone impacts or vehicle vibrations, thus losing its protective function. Utility Model Content

[0005] The purpose of this invention is to solve the problem that the protective plate material hardens and becomes brittle at low temperatures, resulting in a significant reduction in the material's flexibility and impact resistance. Therefore, a wide-temperature weather-resistant EVA front protective plate is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a wide-temperature weather-resistant EVA front protective panel, comprising an EVA protective panel body, the outer side of which is coated with a wide-temperature weather-resistant coating, the wide-temperature weather-resistant coating comprising a weather-resistant shielding layer, a mechanical reinforcement layer and a substrate bonding layer, the substrate bonding layer being coated on the outer side of the EVA protective panel body, the mechanical reinforcement layer being coated on the outer side of the substrate bonding layer, the weather-resistant shielding layer being coated on the outer side of the mechanical reinforcement layer, and a plurality of buffer protrusions being provided on the outer side of the EVA protective panel body.

[0007] Preferably, the buffer protrusions are arranged in a honeycomb pattern.

[0008] Preferably, the top of the buffer protrusion is an arc-shaped surface, and the interior of the buffer protrusion has a cavity filled with elastic particles.

[0009] Preferably, the inner side of the EVA protective plate body is fixedly connected with reinforcing ribs.

[0010] Preferably, the height of the buffer protrusion is in the range of 5 to 10 mm.

[0011] Preferably, rectangular holes are provided at both ends of the EVA protective plate body, and connecting parts are fixedly welded inside the rectangular holes.

[0012] Preferably, the other end of the connecting part is provided with an adapter hole.

[0013] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0014] 1. In this invention, the three-layer composite coating constructs a wide-temperature weather-resistant protection system of "outer shielding - middle buffer - inner anchoring" through material performance gradient design, cross-layer energy dissipation network, and interfacial chemical bonding reinforcement. During temperature cycling from -40℃ to 80℃, each layer performs its independent function while also achieving overall performance gain through component interpenetration and structural synergy. This significantly improves the service life of the front protective panel in harsh environments such as extreme cold and heat, rain, snow, and salt spray, outperforming traditional single-layer coating solutions.

[0015] 2. In this utility model, the buffer protrusions and elastic materials have excellent dynamic response characteristics, which can efficiently absorb and dissipate high-frequency energy, while the reinforcing ribs can effectively suppress the deformation of the protective plate, enhance the overall structural stability, and greatly improve the impact resistance and structural strength of the EVA protective plate body under complex working conditions, ensuring the reliable performance of its protective function. Attached Figure Description

[0016] Figure 1 This utility model presents a first three-dimensional structural schematic diagram of a wide-temperature weather-resistant EVA front protective plate;

[0017] Figure 2A cross-sectional view of a wide-temperature weather-resistant coating in a wide-temperature weather-resistant EVA front protective panel is provided for this utility model;

[0018] Figure 3 A cross-sectional view of a buffer protrusion in a wide-temperature weather-resistant EVA front protective panel is provided for this utility model;

[0019] Figure 4 This invention presents a second three-dimensional structural diagram of a wide-temperature weather-resistant EVA front protective plate.

[0020] Legend: 1. EVA protective panel body; 11. Reinforcing rib; 12. Rectangular hole; 2. Wide temperature weather-resistant coating; 21. Weather-resistant shielding layer; 22. Mechanical reinforcement layer; 23. Substrate bonding layer; 3. Buffer protrusion; 31. Cavity; 4. Connecting part; 41. Adapter hole. Detailed Implementation

[0021] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0023] Example 1: As Figure 1 and Figure 2 As shown, this utility model provides a wide-temperature weather-resistant EVA front protective panel, including an EVA protective panel body 1. The outer side of the EVA protective panel body 1 is coated with a wide-temperature weather-resistant coating 2. The wide-temperature weather-resistant coating 2 includes a weather-resistant shielding layer 21, a mechanical reinforcement layer 22, and a substrate bonding layer 23. The substrate bonding layer 23 is coated on the outer side of the EVA protective panel body 1, the mechanical reinforcement layer 22 is coated on the outer side of the substrate bonding layer 23, and the weather-resistant shielding layer 21 is coated on the outer side of the mechanical reinforcement layer 22. Several buffer protrusions 3 are provided on the outer side of the EVA protective panel body 1. A reinforcing rib 11 is fixedly connected to the inner side of the EVA protective panel body 1. Rectangular holes 12 are opened at both ends of the EVA protective panel body 1. A connecting part 4 is fixedly welded inside the rectangular hole 12. A transition hole 41 is opened at the other end of the connecting part 4.

[0024] The specific settings and functions of this embodiment are described in detail below. The main components of the weather-resistant shielding layer 21 include fluorocarbon resin, modified graphene, and ultraviolet absorber. The fluorocarbon resin ensures that the coating maintains its amorphous flexibility and deforms synchronously with the EVA protective plate body 1, avoiding interface cracking due to stiffness differences. The main components of the mechanical reinforcement layer 22 include silicone-modified acrylic resin, nano-silica, and low-temperature toughening agent. The above substances work together to improve the strength of the wide-temperature weather-resistant coating 2, giving it high strength in low-temperature environments and preventing damage and cracking when impacted by stones. The main components of the bonding layer 23 include polyurethane primer, silane coupling agent, and anti-corrosion additives. The flexible transition zone formed by the silane coupling agent alleviates the difference in thermal expansion between the EVA substrate and the coating, avoiding interfacial peeling caused by low-temperature shrinkage. The urethane bonds in the polyurethane primer maintain stable bond energy at low temperatures, maintaining the chemical bonding force between the coating and the substrate, enabling a stable connection between the EVA protective plate body 1 and the wide-temperature weather-resistant coating 2. The three-layer composite coating constructs a wide-temperature weather-resistant protection system of "outer shielding - middle buffer - inner anchoring" through material performance gradient design, cross-layer energy dissipation network, and interfacial chemical bonding enhancement. In temperature cycling from -40℃ to 80℃, each layer performs its independent function and forms an overall performance gain through component interpenetration and structural synergy, improving the service life of the front protective plate in harsh environments such as extreme cold and high temperature, rain, snow, and salt spray, which is significantly better than traditional single-layer coating solutions.

[0025] Example 2: Figures 1-4 As shown, the wide-temperature weather-resistant EVA front protective panel of this utility model includes an EVA protective panel body 1. The outer side of the EVA protective panel body 1 is coated with a wide-temperature weather-resistant coating 2. The wide-temperature weather-resistant coating 2 includes a weather-resistant shielding layer 21, a mechanical reinforcement layer 22, and a substrate bonding layer 23. The substrate bonding layer 23 is coated on the outer side of the EVA protective panel body 1, the mechanical reinforcement layer 22 is coated on the outer side of the substrate bonding layer 23, and the weather-resistant shielding layer 21 is coated on the outer side of the mechanical reinforcement layer 22. Several buffer protrusions 3 are provided on the outer side of the EVA protective panel body 1. The buffer protrusions 3 are arranged in a honeycomb pattern. The top of the buffer protrusions 3 is an arc-shaped surface. A cavity 31 is opened inside the buffer protrusions 3. The cavity 31 is filled with elastic particles. The height range of the buffer protrusions 3 is 5-10mm.

[0026] The overall effect of this embodiment is that when high-frequency impacts, such as high-speed flying stones or vibrations caused by severe road bumps, act on the protective plate, the buffer protrusions 3 and the elastic material, with their excellent dynamic response characteristics, efficiently absorb and dissipate the high-frequency energy, while the reinforcing ribs 11 effectively suppress the deformation of the protective plate, enhance the overall structural stability, and significantly improve the impact resistance and structural strength of the EVA protective plate body 1 under complex working conditions, ensuring the reliable performance of its protective function.

[0027] The usage and working principle of this device are as follows: The main components of the weather-resistant shielding layer 21 include fluorocarbon resin, modified graphene, and ultraviolet absorber. The fluorocarbon resin ensures that the coating maintains its amorphous flexibility and deforms synchronously with the EVA protective plate body 1, avoiding interface cracking due to stiffness differences. The main components of the mechanical reinforcement layer 22 include silicone-modified acrylic resin, nano-silica, and low-temperature toughening agent. The above substances work together to improve the strength of the wide-temperature weather-resistant coating 2, giving it high strength in low-temperature environments and preventing damage and cracking when impacted by stones. The main components of the substrate bonding layer 23 include polyurethane primer, silane coupling agent, and anti-corrosion additive. The flexible transition zone formed by the silane coupling agent alleviates the thermal expansion difference between the EVA substrate and the coating, avoiding interface peeling caused by low-temperature shrinkage. The urethane bonds in the polyurethane primer maintain stable bond energy at low temperatures, maintaining the chemical bonding force between the coating and the substrate, so that the EVA protective plate body 1 and the wide-temperature weather-resistant coating 2 can be stably connected.

[0028] When high-frequency impacts, such as high-speed flying stones or vibrations caused by severe road bumps, act on the protective plate, the buffer protrusions 3 and the elastic material, with their excellent dynamic response characteristics, efficiently absorb and dissipate high-frequency energy, while the reinforcing ribs 11 effectively suppress the deformation of the protective plate and enhance the overall structural stability.

[0029] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from the technical solution of this utility model shall still fall within the protection scope of this utility model.

Claims

1. A wide-temperature weather-resistant EVA front protective panel, comprising an EVA protective panel body (1), characterized in that: The outer side of the EVA protective panel body (1) is coated with a wide-temperature weather-resistant coating (2). The wide-temperature weather-resistant coating (2) includes a weather-resistant shielding layer (21), a mechanical reinforcement layer (22), and a substrate bonding layer (23). The substrate bonding layer (23) is coated on the outer side of the EVA protective panel body (1), the mechanical reinforcement layer (22) is coated on the outer side of the substrate bonding layer (23), the weather-resistant shielding layer (21) is coated on the outer side of the mechanical reinforcement layer (22), and several buffer protrusions (3) are provided on the outer side of the EVA protective panel body (1).

2. The wide-temperature weather-resistant EVA front protective panel according to claim 1, characterized in that: The buffer protrusions (3) are arranged in a honeycomb pattern.

3. The wide-temperature weather-resistant EVA front protective panel according to claim 1, characterized in that: The top of the buffer protrusion (3) is an arc-shaped surface, and a cavity (31) is opened inside the buffer protrusion (3), which is filled with elastic particles.

4. The wide-temperature weather-resistant EVA front protective panel according to claim 1, characterized in that: The inner side of the EVA protective panel body (1) is fixedly connected with reinforcing ribs (11).

5. The wide-temperature weather-resistant EVA front protective panel according to claim 1, characterized in that: The height range of the buffer protrusion (3) is 5 to 10 mm.

6. The wide-temperature weather-resistant EVA front protective panel according to claim 1, characterized in that: The EVA protective plate body (1) has rectangular holes (12) at both ends, and a connecting part (4) is fixedly welded inside the rectangular holes (12).

7. The wide-temperature weather-resistant EVA front protective panel according to claim 6, characterized in that: The other end of the connecting part (4) is provided with an adapter hole (41).

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