Automobile engine hood made of composite material

Abstract

The utility model discloses an automobile engine hood made of composite materials, which comprises an engine hood body, the engine hood body sequentially comprises a strength layer, a heat insulation layer and a corrosion-resistant layer from inside to outside, and sealing frames are arranged on the peripheries of the strength layer, the heat insulation layer and the corrosion-resistant layer. The engine hood has the advantages that the carbon fiber reinforced plastic serves as the strength layer, the strength is high, the density is far lower than that of metal materials, and the overall weight of the engine hood is greatly reduced by matching with the heat insulation layer made of the honeycomb polyurethane foam composite materials. The heat insulation layer can effectively prevent heat generated by an engine from being transmitted to a cockpit through the air cavity of a honeycomb structure and the heat insulation characteristic of polyurethane. The corrosion-resistant layer is made of glass fiber reinforced plastic, the material is high in chemical stability and has good tolerance to corrosive media such as rainwater and salt mist, and the service life of the engine hood is prolonged. The three layers are connected through a hot-pressing process, so that all the layers are tightly combined into a whole, and the overall structural strength and stability are enhanced.

Description

Technical Field

[0001] This utility model belongs to the field of automotive parts technology, specifically relating to a composite material automotive engine hood. Background Technology

[0002] As a crucial component of the car body, the engine hood not only protects the engine and its accessories but also significantly impacts the car's overall appearance and aerodynamic performance. Traditional engine hoods are mostly made of metal materials, such as steel plates. While metal materials offer high strength, they also have some significant drawbacks. For example, metal materials are relatively heavy, increasing the overall weight of the car and consequently leading to increased fuel consumption, which contradicts the trend towards lightweight vehicles. Furthermore, metal engine hoods have poor heat insulation and noise reduction properties, allowing heat and noise generated by the engine to easily penetrate the passenger compartment, affecting ride comfort. In addition, metal materials have relatively poor corrosion resistance, making them susceptible to rust from environmental factors (such as rain and salt spray) over long-term use, affecting the hood's lifespan and appearance.

[0003] Therefore, there is an urgent need to provide a composite material automotive engine cover to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to provide a composite material car engine cover to solve the technical problem that traditional car engine covers often fail to meet the requirements of strength, heat insulation and wear resistance in terms of performance.

[0005] To solve the above-mentioned technical problems, this utility model provides a composite material automobile engine cover, including: an engine cover body, wherein the engine cover body includes, from the inside to the outside, a strength layer, a heat insulation layer and a corrosion-resistant layer, and a sealing frame is provided around the strength layer, the heat insulation layer and the corrosion-resistant layer.

[0006] As further explained, the strength layer is made of carbon fiber reinforced plastic, the heat insulation layer is made of honeycomb polyurethane foam composite material, the corrosion-resistant layer is made of glass fiber reinforced plastic, and the sealing frame is made of rubber.

[0007] As further explained, the heat insulation layer is connected to the strength layer and the corrosion-resistant layer respectively by a hot-pressing process, and the sealing frame is connected to the periphery of the strength layer, the heat insulation layer and the corrosion-resistant layer by a hot-pressing process.

[0008] Compared with the prior art, the beneficial effects of this utility model are:

[0009] 1. Carbon fiber reinforced plastic is used as the strength layer, which has high strength and a density far lower than metal materials. Combined with a honeycomb polyurethane foam composite insulation layer, the overall weight of the engine hood is significantly reduced. The honeycomb polyurethane foam insulation layer, utilizing the air cavities of the honeycomb structure and the inherent thermal insulation properties of polyurethane, effectively blocks the transfer of heat generated by the engine to the passenger compartment. Simultaneously, its porous structure provides excellent absorption and blocking of engine noise, significantly improving driving comfort. The corrosion-resistant layer uses glass fiber reinforced plastic, a material with strong chemical stability and excellent resistance to corrosive media such as rainwater and salt spray. Compared to metal materials, it effectively avoids rust and corrosion problems, extending the service life of the engine hood. The three layers are connected through a hot-pressing process, ensuring a tight bond between them and enhancing the overall structural strength and stability.

[0010] 2. The sealing frame is made of rubber, which has good elasticity and sealing properties, allowing it to fit tightly against the car body and effectively prevent rainwater, dust, and other contaminants from entering the engine compartment, protecting the engine and its accessories from external pollution and damage. In addition, the sealing frame also acts as a buffer, reducing the impact force of collisions with the car body when the hood is closed, protecting both the hood and the body.

[0011] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0012] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0013] 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.

[0014] Figure 1 This is a preferred three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a preferred exploded view of the present invention.

[0016] In the picture:

[0017] 1. Engine hood body, 2. Strength layer, 3. Heat insulation layer, 4. Corrosion resistant layer, 5. Sealing frame. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions 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, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] Reference Figure 1-2 A composite material automotive engine hood includes an engine hood body 1, which comprises, from the inside out, a strength layer 2, a heat insulation layer 3, and a corrosion-resistant layer 4. A sealing frame 5 is provided around each of the strength layer 2, heat insulation layer 3, and corrosion-resistant layer 4. This layered structure design is based on a comprehensive consideration of the different functional requirements of the automotive engine hood body 1. The strength layer 2 ensures that the engine hood body 1 has sufficient structural strength to protect the engine and its accessories; the heat insulation layer 3 aims to reduce the transfer of engine heat to the passenger compartment; the corrosion-resistant layer 4 resists environmental factors from corroding the engine hood body 1; and the sealing frame 5 serves to seal and enhance the overall structural stability. By integrating multiple functions into a single engine hood body 1 and using different layers to meet various requirements such as strength, heat insulation, and corrosion resistance, the overall performance of the engine hood body 1 is improved.

[0020] like Figure 2 As shown, the strength layer 2 is made of carbon fiber reinforced plastic, the heat insulation layer 3 is made of honeycomb polyurethane foam composite material, the corrosion-resistant layer 4 is made of glass fiber reinforced plastic, and the sealing frame 5 is made of rubber. The strength layer 2 uses carbon fiber reinforced plastic, utilizing the high strength and lightweight properties of carbon fiber to reduce weight while maintaining strength. The heat insulation layer 3 uses honeycomb polyurethane foam, utilizing the air insulation properties of the closed honeycomb chambers, combined with the low thermal conductivity of polyurethane, to block heat conduction; its porous structure can also absorb sound wave energy. The corrosion-resistant layer 4 uses glass fiber reinforced plastic; glass fiber has good corrosion resistance, while the reinforced plastic improves the overall strength and toughness. The sealing frame 5 uses rubber, which has good elasticity and sealing properties, effectively preventing moisture, dust, etc., from entering the engine hood body 1. The selection of appropriate materials for different layers allows them to work together better, improving the reliability and stability of the engine hood body 1.

[0021] like Figure 2As shown, the heat insulation layer 3 is connected to the strength layer 2 and the corrosion-resistant layer 4 via a hot-pressing process. The sealing frame 5 is also connected to the periphery of the strength layer 2, the heat insulation layer 3, and the corrosion-resistant layer 4 via a hot-pressing process. The hot-pressing process utilizes heating and pressurization to fuse and bond the materials together under high temperature and pressure, forming a unified whole. Through this process, the heat insulation layer 3 is tightly connected to the strength layer 2 and the corrosion-resistant layer 4, and the sealing frame 5 achieves a reliable sealing connection with the periphery of each layer, ensuring the integrity and airtightness of the engine hood body 1 structure.

[0022] All the devices selected in this application (parts whose specific structures are not specified) are general standard parts or parts known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0023] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0024] In addition, in the various embodiments of this utility model, each functional unit can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0025] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A composite material automobile engine hood, characterized in that, include: The engine hood body (1) includes, from the inside out, a strength layer (2), a heat insulation layer (3) and a corrosion-resistant layer (4), and a sealing frame (5) is provided around the strength layer (2), the heat insulation layer (3) and the corrosion-resistant layer (4).

2. The composite material automobile engine hood as described in claim 1, characterized in that, The strength layer (2) is made of carbon fiber reinforced plastic, the heat insulation layer (3) is made of honeycomb polyurethane foam composite material, the corrosion resistant layer (4) is made of glass fiber reinforced plastic, and the sealing frame (5) is made of rubber material.

3. The composite material automobile engine hood as described in claim 2, characterized in that, The heat insulation layer (3) is connected to the strength layer (2) and the corrosion-resistant layer (4) respectively by a hot pressing process. The sealing frame (5) is connected to the periphery of the strength layer (2), the heat insulation layer (3) and the corrosion-resistant layer (4) by a hot pressing process.

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