A carbon fiber composite sandwich structure for vehicles

Abstract

This utility model relates to the field of vehicle sheet metal technology and discloses a carbon fiber composite sandwich structure for vehicles, including an inner door shell and an outer door shell. The outer door shell is installed on one side of the inner door shell, and a bottom plate is provided inside the inner door shell. A first partition is installed on one side of the bottom plate, a core plate is provided on one side of the first partition, and a second partition is installed on one side of the core plate. This utility model effectively improves the overall rigidity and impact resistance of the door through a multi-layer combination design of the bottom plate, the first partition, the core plate, the second partition, and the thin-clad iron plate. The setting of the inner ring frame and the rib plate not only enhances the bonding strength between the rib plate and the bottom plate, making the structural connection tighter, but also strengthens the local strength of the inner door shell. At the same time, due to the lightweight nature of carbon fiber composite materials, this sandwich structure can reduce the weight of the door while ensuring its strength and safety.

Description

Technical Field

[0001] This utility model relates to the field of vehicle sheet metal technology, specifically to a carbon fiber composite sandwich structure for vehicles. Background Technology

[0002] Carbon fiber composites are high-performance materials made from carbon fibers and matrix materials through a composite process. They possess excellent properties such as high strength, high modulus, low density, high temperature resistance, corrosion resistance, and abrasion resistance. Their specific strength and specific modulus far exceed those of traditional metal materials. The matrix material plays the role of transferring loads and protecting carbon fibers. This material combines the advantages of carbon fibers and matrix materials and is widely used in aerospace, automotive industry, sporting goods, and new energy fields. It is an ideal choice for manufacturing lightweight, high-strength structural components.

[0003] With the rapid development of the automotive industry, consumers have increasingly stringent requirements for vehicle performance. They not only pursue powerful performance and precise handling, but also have higher expectations for lightweight, safety, and energy efficiency. However, existing vehicle door structures mostly use metal materials or simply carbon fiber composite panels. Although metal materials have high strength and low cost, they are heavy, which increases the overall weight of the vehicle, leading to increased fuel consumption and shortened driving range. If carbon fiber composite panels are used alone, the structural stability is low under complex stress conditions, and damage caused by local stress concentration is likely to occur. At the same time, the connection strength and reliability between different components are insufficient, affecting the overall performance of the door. Utility Model Content

[0004] The purpose of this invention is to provide a carbon fiber composite sandwich structure for vehicles to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a carbon fiber composite sandwich structure for vehicles, comprising an inner door shell and an outer door shell, wherein the outer door shell is installed on one side of the inner door shell, and a bottom plate is provided inside the inner door shell; A first partition is installed on one side of the base plate. A core plate is provided on one side of the first partition. A second partition is installed on one side of the core plate. A thin-clad iron plate is provided on one side of the second partition. Multiple slots are provided on the inner wall of the base plate. The inner wall of the slot is provided with an inner ring frame, and a rib plate is bonded to the inner wall of the slot through the inner ring frame.

[0006] Preferably, the inner shell of the door is made of the same material as the outer shell of the door, which is aluminum alloy.

[0007] Preferably, the base plate is made of high-strength steel, and the outer side of the base plate fits into the inner wall of the door inner shell.

[0008] Preferably, both the first partition and the second partition are made of rubber, and the dimensions of both the first partition and the second partition are the same as the dimensions of the bottom plate. The inner walls of both the first partition and the second partition are provided with several sets of through holes.

[0009] Preferably, the core plate is made of carbon fiber composite material, and the size of the core plate is the same as that of the first partition and the second partition.

[0010] Preferably, the thin-clad steel plate is made of the same high-strength steel as the base plate, and the dimensions of the thin-clad steel plate are the same as those of the base plate.

[0011] Preferably, the rib plate is made of the same material as the core plate, which is carbon fiber composite material, and the outer side of the rib plate fits into the inner wall of the slot.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model effectively improves the overall rigidity and impact resistance of the car door through a multi-layer combination design of a base plate, a first partition plate, a core plate, a second partition plate, and a thin-clad iron plate. The inner ring frame and rib plate not only enhance the bonding strength between the rib plate and the base plate, making the structural connection tighter, but also strengthen the local strength of the inner shell of the car door. At the same time, due to the lightweight nature of carbon fiber composite materials, this sandwich structure can reduce the weight of the car door while ensuring its strength and safety. Attached Figure Description

[0013] Figure 1 A schematic diagram of a preferred embodiment of the carbon fiber composite sandwich structure for vehicles provided by this utility model; Figure 2 A schematic diagram of the door shell structure provided by this utility model; Figure 3 A schematic diagram of the inner shell structure of the car door provided by this utility model; Figure 4 This is a schematic diagram of the exploded structure of the base plate provided by this utility model.

[0014] In the diagram: 1. Inner door shell; 2. Outer door shell; 3. Base plate; 4. First partition; 5. Core plate; 6. Second partition; 7. Through hole; 8. Thin-clad steel plate; 9. Slot; 10. Inner ring frame; 11. Rib plate. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-4 As shown, a carbon fiber composite sandwich structure for vehicles includes an inner door shell 1 and an outer door shell 2. The outer door shell 2 is installed on one side of the inner door shell 1. A base plate 3 is provided inside the inner door shell 1. The inner door shell 1 serves as the basic support part of the sandwich structure, providing an installation and load-bearing platform for the entire internal structure of the door. Together with the outer door shell 2, it forms the overall frame of the door, protecting the interior space and internal components. The outer door shell 2 constitutes the exterior part of the door, serving a protective, aesthetic, and coordinated function with the overall body shape. It also shares the external load with the inner door shell 1. The base plate 3 further strengthens the structural strength of the inner door shell 1, providing a stable installation base for other internal structures and helping to distribute the force borne by the door. A first partition 4 is installed on one side of the base plate 3. A core plate 5 is provided on one side of the first partition 4, and a second partition 5 is installed on one side of the core plate 5. A thin-clad iron plate 8 is provided on one side of the second partition plate 6. The first partition plate 4 and the second partition plate 6 work together to buffer and absorb some vibration and impact energy, and reduce noise transmission. The core plate 5 can effectively improve the overall strength and rigidity of the door sandwich structure, while reducing the weight of the door and improving the vehicle's fuel economy and handling performance. The thin-clad iron plate 8 can enhance the local or overall strength and stability of the door sandwich structure, and is used to bear specific loads or provide additional support. Multiple sets of slots 9 are all opened on the inner wall of the base plate 3. The inner wall of the slot 9 is provided with an inner ring frame 10. Rib plates 11 are bonded to the inner wall of the slot 9 through the inner ring frame 10. The rib plates 11 are bonded to the slots 9 opened on the inner wall of the base plate 3 through the inner ring frame 10, which can further improve the rigidity and deformation resistance of the base plate 3 and the entire door sandwich structure, making the door more stable and reliable when subjected to various forces.

[0017] The inner door shell 1 is made of the same material as the outer door shell 2, both being aluminum alloy. The base plate 3 is made of high-strength steel, and the outer side of the base plate 3 fits into the inner wall of the inner door shell 1. The use of aluminum alloy for both the inner door shell 1 and the outer door shell 2 can reduce the weight of the door while maintaining its strength. The use of high-strength steel for the base plate 3 can further enhance the structural strength of the inner door shell 1.

[0018] Both the first partition 4 and the second partition 6 are made of rubber, and their dimensions are the same as those of the base plate 3. The inner walls of both the first partition 4 and the second partition 6 are provided with several sets of through holes 7. The core plate 5 is made of carbon fiber composite material, and its dimensions are the same as those of the first partition 4 and the second partition 6. The rubber material of the first partition 4 and the second partition 6 provides them with certain elasticity and shock absorption properties. The several sets of through holes 7 on their inner walls help to reduce weight and improve the acoustic performance or ventilation effect of the structure to a certain extent.

[0019] The thin-clad steel plate 8 is made of the same high-strength steel as the base plate 3, and its dimensions are the same as those of the base plate 3. The rib plate 11 is made of the same carbon fiber composite material as the core plate 5, and the outer side of the rib plate 11 fits into the inner wall of the slot 9. The use of high-strength steel in the thin-clad steel plate 8 ensures that it has a certain strength, thereby enhancing the local or overall strength and stability of the door sandwich structure. The use of carbon fiber composite material in the rib plate 11 strengthens the structural strength, further improving the rigidity and deformation resistance of the base plate 3 and the entire door sandwich structure, making the door more stable and reliable when subjected to various forces. At the same time, the use of carbon fiber composite material also helps to reduce weight.

[0020] Working Principle: When the car door opens and closes, or when the vehicle is bumpy, the door will be subjected to vibration and impact. At this time, the rubber material of the first partition 4 and the second partition 6, with its own elasticity, acts like a shock absorber spring, buffering and absorbing some of the vibration and impact energy, effectively reducing the transmission of noise into the vehicle, creating a quiet and comfortable environment inside the car. The through holes 7 on its inner wall not only reduce its own weight, but also improve the internal acoustic performance of the structure, allowing sound to propagate more rationally, while also providing a certain ventilation effect. The carbon fiber composite material of the core plate 5 has the characteristics of high strength, high modulus, and low density. When the car door is subjected to external forces, it can effectively improve the overall strength and rigidity of the door sandwich structure, while reducing the weight of the door, reducing vehicle energy consumption, improving fuel economy, and also improving… The vehicle's handling performance makes driving more agile and stable. The thin-film steel plate 8 is made of high-strength steel, which can enhance the local or overall strength and stability of the door sandwich structure and withstand specific loads. For example, it can provide extra support for the door in the event of a minor collision, protecting the safety of the occupants. The inner ring frame 10 in the groove 9 on the inner wall of the base plate 3 firmly bonds the rib plate 11. The carbon fiber composite material of the rib plate 11 further strengthens the rigidity and deformation resistance of the base plate 3 and the entire door sandwich structure. When the door is subjected to lateral or torsional forces, the rib plate 11 can effectively resist deformation, making the door more stable and reliable when subjected to various forces. It comprehensively protects the performance and safety of the door, safeguarding the normal operation of the vehicle and the safety of passengers.

[0021] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A carbon fiber composite sandwich structure for a vehicle, comprising a door inner panel (1), characterized by, Also includes: The door shell (2) is installed on one side of the door inner shell (1), and the door inner shell (1) is provided with a bottom plate (3). The first partition (4) is installed on one side of the base plate (3). A core plate (5) is provided on one side of the first partition (4). A second partition (6) is installed on one side of the core plate (5). A thin-clad iron plate (8) is provided on one side of the second partition (6). Multiple slots (9) are provided on the inner wall of the base plate (3). The inner wall of the slot (9) is provided with an inner ring frame (10). Rib plates (11) are glued to the inner wall of the slot (9) through the inner ring frame (10).

2. The carbon fiber composite sandwich structure for a vehicle according to claim 1, characterized by: The inner shell (1) of the car door is made of the same material as the outer shell (2) of the car door, which is aluminum alloy.

3. The carbon fiber composite sandwich structure for a vehicle according to claim 1, characterized by: The base plate (3) is made of high-strength steel, and the outer side of the base plate (3) fits into the inner wall of the door inner shell (1).

4. The carbon fiber composite sandwich structure for a vehicle according to claim 1, characterized by: The first partition (4) and the second partition (6) are both made of rubber, and the dimensions of the first partition (4) and the second partition (6) are the same as the dimensions of the bottom plate (3). The inner walls of the first partition (4) and the second partition (6) are provided with several sets of through holes (7).

5. The carbon fiber composite sandwich structure for a vehicle according to claim 1, characterized by: The core plate (5) is made of carbon fiber composite material, and the size of the core plate (5) is the same as that of the first partition (4) and the second partition (6).

6. The carbon fiber composite sandwich structure for a vehicle according to claim 1, characterized by: The material used for the thin-clad iron plate (8) is the same as that used for the base plate (3), both being high-strength steel, and the dimensions of the thin-clad iron plate (8) are the same as those of the base plate (3).

7. The carbon fiber composite sandwich structure for a vehicle according to claim 1, characterized by: The rib plate (11) is made of the same material as the core plate (5), which is carbon fiber composite material, and the outer side of the rib plate (11) fits into the inner wall of the slot (9).

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