Environment-friendly heat-resistant inner plate of automobile door protection plate

Abstract

The utility model discloses an environment-friendly heat-resistant inner plate of an automobile door protection plate, which relates to the technical field of automobile parts and comprises an inner plate body made of EPP (expanded polypropylene) foam materials, and a heat insulation layer, a buffer layer and a decorative layer are sequentially compounded on the outer side of the inner plate body. The heat insulation layer comprises an aluminum foil reflecting film and a high-temperature-resistant non-woven fabric layer which are alternately stacked, and a honeycomb-shaped groove structure is arranged on the surface of the aluminum foil reflecting film; a plurality of hollow elastic supporting columns are embedded in the buffer layer and correspond to the honeycomb-shaped groove structures in the heat insulation layer in position. According to the technical scheme, the heat insulation layer, the buffer layer and the decoration layer are sequentially arranged on the outer side of the inner plate body made of the EPP foaming material, and the aluminum foil reflecting film with the honeycomb groove structure is arranged, so that the heat insulation effect of a product is greatly enhanced, external heat is effectively prevented from being transmitted into a vehicle, and the riding comfort is improved. And a plurality of hollow elastic supporting columns are embedded in the buffer layer, so that the stability of the structure is improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to an environmentally friendly, heat-resistant automotive door panel inner panel. Background Technology

[0002] With the development of the automotive industry, the requirements for automotive parts are becoming increasingly stringent. They must not only possess excellent mechanical properties and durability, but also meet the demands of environmental protection, lightweight design, and comfort. Traditional automotive door panels are typically made of a single material, such as hard plastic or metal sheet. While these materials can provide some structural support, they are significantly inadequate in terms of heat insulation, sound insulation, and cushioning. Especially in high-temperature environments, the heat resistance and insulation performance of traditional materials cannot effectively protect the vehicle's interior from external temperature fluctuations. Furthermore, traditional materials are difficult to recycle, which contradicts current environmental protection principles.

[0003] To overcome the aforementioned problems, the industry has begun exploring the use of new composite materials to manufacture the inner panels of automotive door panels. For example, EPP foam has gradually gained attention due to its excellent thermal insulation, impact resistance, and recyclability. However, how to effectively combine EPP foam with other functional layers (such as thermal insulation layers, cushioning layers, and decorative layers) to achieve optimal overall performance remains a pressing technical challenge. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an environmentally friendly heat-resistant automotive door panel inner panel, so as to solve the problem of effectively combining the existing EPP foam material with other functional layers to achieve the best comprehensive performance.

[0005] In view of this, the present invention provides an environmentally friendly heat-resistant automotive door panel inner panel, including an inner panel body, the inner panel body being made of EPP foam material, and having a heat insulation layer, a buffer layer and a decorative layer sequentially laminated on its outer side;

[0006] The heat insulation layer includes alternating layers of aluminum foil reflective film and high-temperature resistant non-woven fabric layer, and the surface of the aluminum foil reflective film is provided with a honeycomb groove structure;

[0007] The buffer layer is embedded with multiple hollow elastic support columns, and the elastic support columns correspond to the honeycomb groove structure on the heat insulation layer.

[0008] Optionally, the density of the EPP foam material is 80-120 kg / m³, and it has a uniformly arranged closed-cell bubble structure inside, with the diameter of the closed-cell bubbles ranging from 0.5 to 2 mm.

[0009] Optionally, the aluminum foil reflective film is composed of an aluminum foil layer, a polyethylene substrate layer, and a polyester fiber woven layer bonded together by hot melt adhesive.

[0010] Optionally, the elastic support columns of the buffer layer are made of silicone rubber, and the surface of the elastic support columns is covered with anti-slip texture.

[0011] Optionally, the decorative layer includes a sound-absorbing cotton layer and a triangular sound-guiding hole array, wherein one end face of the sound-absorbing cotton layer is covered with the triangular sound-guiding hole array.

[0012] Optionally, the edge of the inner panel body is provided with a hot melt adhesive sealing strip for sealing the door panel.

[0013] Optionally, the bottom of the inner panel body, the heat insulation layer, and the buffer layer are provided with drainage grooves.

[0014] As can be seen from the above technical solutions, the embodiments of this utility model have the following advantages:

[0015] 1. This utility model discloses an environmentally friendly, heat-resistant automotive door panel inner panel. By sequentially setting a heat insulation layer, a buffer layer, and a decorative layer on the outer side of the inner panel body made of EPP foam material, and adding an aluminum foil reflective film with a honeycomb groove structure, the heat insulation effect of the product is greatly enhanced, effectively preventing external heat from entering the vehicle and improving passenger comfort. Multiple hollow elastic support columns embedded in the buffer layer correspond to the honeycomb groove structure on the heat insulation layer. This structural design not only increases the stability of the structure but also significantly improves the absorption capacity of impact forces, providing better safety for passengers.

[0016] 2. The environmentally friendly heat-resistant automotive door panel of this utility model ensures reliability in humid environments through the drainage groove at the bottom, preventing material damage or functional degradation caused by moisture accumulation and extending the product's service life.

[0017] These features and advantages of the present invention will be disclosed in detail in the following specific embodiments and accompanying drawings. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings:

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the heat insulation layer of this utility model;

[0021] Figure 3 This is a schematic diagram of the structure of the elastic support column of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the decorative layer of this utility model;

[0023] Figure 5 This is a schematic diagram of the end face of the triangular sound guide hole array of this utility model.

[0024] Explanation of reference numerals in the attached drawings: 1. Inner panel body; 11. Drainage groove; 2. Heat insulation layer; 21. Aluminum foil reflective film; 211. Aluminum foil layer; 212. Polyethylene substrate layer; 213. Polyester fiber woven layer; 22. High temperature resistant non-woven fabric layer; 3. Buffer layer; 31. Elastic support column; 311. Anti-slip texture; 4. Decorative layer; 41. Sound-absorbing cotton layer; 42. Triangular sound guide hole array. Detailed Implementation

[0025] The technical solutions of the present utility model will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of the present utility model and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of the present utility model.

[0026] The following describes in detail, with reference to the accompanying drawings, an embodiment of the present invention: an environmentally friendly, heat-resistant automotive door panel inner plate. Example

[0027] For easier understanding, please refer to Figures 1 to 5 This utility model provides an embodiment of an environmentally friendly heat-resistant automotive door panel inner panel, including an inner panel body 1, which is made of EPP foam material, and has a heat insulation layer 2, a buffer layer 3 and a decorative layer 4 sequentially laminated on its outer side.

[0028] The heat insulation layer 2 includes alternating stacked aluminum foil reflective film 21 and high temperature resistant non-woven fabric layer 22, and the surface of the aluminum foil reflective film 21 is provided with a honeycomb groove structure;

[0029] The buffer layer 3 has multiple hollow elastic support columns 31 embedded within it, and the positions of the elastic support columns 31 correspond to the honeycomb groove structure on the heat insulation layer 2. The EPP foam material has a density of 80-120 kg / m³, and is uniformly composed of closed-cell bubble structures with a diameter ranging from 0.5 to 2 mm. The inner panel body 1 has hot melt adhesive sealing strips on its edges for sealing the door panel.

[0030] It should be noted that the inner panel body 1 is made of EPP foam material. This material has a density of 80-120 kg / m³ and contains uniformly distributed closed-cell bubble structures with diameters ranging from 0.5-2 mm. The structure of the inner panel body 1 not only gives the inner panel good mechanical strength and lightweight characteristics, but also excellent heat insulation performance and a certain cushioning capacity. Furthermore, hot melt adhesive sealing strips are provided at the edges of the inner panel body 1 for sealing the door panel, thereby improving the overall sealing effect. A heat insulation layer 2, a buffer layer 3, and a decorative layer 4 are sequentially laminated on the outer side of the inner panel body 1. The heat insulation layer 2 includes alternating layers of aluminum foil reflective film 21 and a high-temperature resistant non-woven fabric layer 22. The surface of the aluminum foil reflective film 21 is designed with a honeycomb-shaped groove structure. Above the heat insulation layer 2 is the buffer layer 3, which embeds multiple hollow elastic support pillars 31. The positions of the multiple elastic support pillars 31 correspond to the honeycomb-shaped groove structure on the heat insulation layer 2 to enhance the stability and cushioning effect of the overall structure. A decorative layer 4 is provided above the buffer layer 3.

[0031] In some embodiments, the aluminum foil reflective film 21 is formed by laminating an aluminum foil layer 211, a polyethylene substrate layer 212, and a polyester fiber woven layer 213 with hot melt adhesive.

[0032] It should be noted that the aluminum foil reflective film 21 is composed of an aluminum foil layer 211, a polyethylene substrate layer 212, and a polyester fiber woven layer 213, which are bonded together by hot melt adhesive. This not only enhances the heat insulation performance of the reflective film but also improves its mechanical strength.

[0033] In some embodiments, the elastic support column 31 of the buffer layer 3 is made of silicone rubber, and the surface of the elastic support column 31 is covered with anti-slip texture 311.

[0034] It should be noted that the elastic support column 31 is made of silicone rubber material and has anti-slip texture 311 on its surface, which can not only effectively absorb impact force, but also increase friction and prevent displacement.

[0035] The decorative layer 4 includes a sound-absorbing cotton layer 41 and a triangular sound-guiding hole array 42. The triangular sound-guiding hole array 42 is laid on one end face of the sound-absorbing cotton layer 41.

[0036] It should be noted that the decorative layer 4 includes a sound-absorbing cotton layer 41 and a triangular sound-guiding hole array 42. One end face of the sound-absorbing cotton layer 41 is covered with a triangular sound-guiding hole array 42. This design helps to reduce in-vehicle noise and improve passenger comfort.

[0037] In some embodiments, the bottom of the inner panel body 1, the heat insulation layer 2, and the buffer layer 3 is provided with a drainage groove 11.

[0038] In addition, to ensure reliability in humid environments, drainage grooves 11 are specially designed at the bottom of the inner panel body 1, the insulation layer 2, and the buffer layer 3 to facilitate the removal of accumulated water and prevent material damage or functional degradation caused by long-term water accumulation.

[0039] The design of the sound-absorbing cotton layer 41 and the triangular sound-guiding hole array 42 in the decorative layer 4 effectively reduces the transmission of noise inside and outside the vehicle, further improving the quietness of the cabin. The environmentally friendly properties of EPP foam material itself, coupled with the good compatibility of the materials in each layer, make the inner panel of this protective panel not only meet environmental standards but also easy to manufacture and process, which is conducive to large-scale production.

[0040] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application 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 of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. An environmentally friendly heat-resistant automobile door guard inner panel, comprising an inner panel body (1), characterized in that: The inner panel body (1) is made of EPP foam material, and its outer side is sequentially laminated with a heat insulation layer (2), a buffer layer (3) and a decorative layer (4). The heat insulation layer (2) includes alternating aluminum foil reflective film (21) and high temperature resistant non-woven fabric layer (22), and the surface of the aluminum foil reflective film (21) is provided with a honeycomb groove structure; The buffer layer (3) is embedded with a plurality of hollow elastic support columns (31), and the elastic support columns (31) correspond to the honeycomb groove structure on the heat insulation layer (2).

2. The environmentally friendly heat-resistant automobile door guard inner plate according to claim 1, characterized in that: The EPP foam material has a density of 80-120 kg / m³, and is uniformly provided with closed-cell bubble structures inside, with the diameter of the closed-cell bubbles ranging from 0.5 to 2 mm.

3. The environmentally friendly heat-resistant automobile door guard inner plate according to claim 1, characterized in that: The aluminum foil reflective film (21) is composed of an aluminum foil layer (211), a polyethylene substrate layer (212), and a polyester fiber woven layer (213) bonded together by hot melt adhesive.

4. The environmentally friendly heat-resistant automobile door guard inner plate according to claim 1, characterized in that: The elastic support column (31) of the buffer layer (3) is made of silicone rubber, and the surface of the elastic support column (31) is covered with anti-slip texture (311).

5. The environmentally friendly heat-resistant automobile door guard inner plate according to claim 1, characterized in that: The decorative layer (4) includes a sound-absorbing cotton layer (41) and a triangular sound-guiding hole array (42), with the triangular sound-guiding hole array (42) laid on one end face of the sound-absorbing cotton layer (41).

6. The environmentally friendly heat-resistant automotive door panel inner panel according to claim 1, characterized in that: The inner panel body (1) is provided with a hot melt adhesive sealing strip on its edge for sealing the door panel.

7. The environmentally friendly heat-resistant automobile door guard inner plate according to claim 1, characterized in that: The bottom of the inner plate body (1), the heat insulation layer (2), and the buffer layer (3) is provided with a drainage groove (11).

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