Split type energy-saving racing car shell and manufacturing method thereof

Abstract

The invention discloses a split type energy-saving racing car shell and a manufacturing method thereof.The manufacturing method comprises the steps that based on a prototype energy-saving racing car model, an upper car shell and a lower car shell are divided, and a car shell mold is manufactured through CNC machining; the surface of the vehicle shell mold is pretreated, a layer of adhesive tape is pasted, and demolding wax is smeared multiple times; carbon fiber cloth is cut according to the shape of the vehicle shell mold, and the cut carbon fiber cloth is laid to the position of the flange edge; uniformly coating the blended resin on the cut carbon fiber cloth; the vehicle window is cut along the sunken edge of the vehicle window, the manufactured flange edge is trimmed and polished, and then the vehicle shell mold is separated from the vehicle shell; magnets are adhered to the flange edges of the upper and lower vehicle shells; and the PVC plate is baked and softened, a front car window is manufactured and installed, and the energy-saving prototype racing car shell is obtained. Carbon fibers are used as raw materials, the split type manufacturing process is optimized, and the connecting mode and the car window forming technology are improved, so that the car shell manufacturing success rate and efficiency are effectively improved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle shell manufacturing, in particular to a split energy-saving racing car shell and a manufacturing method thereof. Background Art

[0002] The development of energy-saving racing car technology has become a new trend in the automotive industry. With the Honda Energy Conservation Competition and the Shell Eco-marathon, an increasing number of university students and businesses are devoting themselves to the research, development, and production of energy-saving racing cars. However, in the actual production of energy-saving cars, particularly in bodywork, many technical bottlenecks remain.

[0003] Currently, processes such as fishbone forming, female mold forming, male mold integrated forming, and heat shrink film bonding have been widely used in the production of energy-saving vehicle bodies. However, existing technologies present the following challenges: the body production process is complex, time-consuming, and costly, while also resulting in unstable quality and prone to deformation. Traditional connection methods, such as mortise and tenon joints and rivets, are cumbersome to operate and offer poor fixation, impacting the overall stability and sealing of the vehicle body. Furthermore, the material selection and molding processes used in window production struggle to meet the lightweight and aerodynamic performance requirements of energy-saving vehicles. Therefore, addressing the high cost and low success rate of traditional bodyshell production has become a key research topic in this field. Summary of the Invention

[0004] The purpose of the present invention is to provide a split energy-saving racing car body and a manufacturing method thereof, using carbon fiber as raw material, by optimizing the split manufacturing process, improving the connection method and the window molding technology, so as to overcome the above-mentioned defects of the prior art.

[0005] To achieve the above object, the present invention provides the following solutions:

[0006] In one aspect, the present invention provides a method for manufacturing a split energy-saving racing car shell, comprising the following steps:

[0007] S1, design a prototype energy-saving racing car model;

[0008] S2: Using Catia 3D modeling software, the prototype energy-saving racing car model was divided into an upper and lower bodyshell. Depressions were added to the front and side windows. After obtaining the model design files, CNC machining was performed to create the bodyshell mold.

[0009] S3, after the car shell mold is made, pre-treat the surface of the car shell mold to make the surface of the car shell mold smoother and more fluent, then stick a layer of tape on the surface of the car shell mold and apply release wax several times;

[0010] S4, cut the carbon fiber cloth according to the shape of the car body mold. The cut carbon fiber cloth needs to be laid to the flange edge and marked accordingly;

[0011] S5: Use YT-CC302S slow-drying epoxy resin. Component A (resin matrix) is primarily an epoxy resin base, and component B (curing agent) is primarily an amine curing agent. Mix epoxy resin A and B in a ratio of 3:1. Ensure a uniform mixture. Apply the prepared resin evenly to the cut carbon fiber cloth. Apply a thin layer of the prepared resin evenly to the tape of the vehicle shell mold to secure the first layer of carbon fiber cloth. Then, lay the carbon fiber cloth flat layer by layer.

[0012] S6, after standing for a set period of time, the car body is solidified and formed, the car window is cut along the recessed edge of the car window, the flange edge is trimmed and polished, and then the car body mold is removed from the car body;

[0013] S7, attaching magnets to the flange edges of the upper and lower car shells, and utilizing the magnetic force of the magnets to connect the upper and lower car shells;

[0014] S8, baking and softening the PVC sheet, covering the softened PVC sheet on the front window and side windows according to their shapes, so as to reshape them into the shapes of the front window and side windows. Finally, pasting the reshaped PVC sheet to the front window and side windows of the upper shell, the shell of the energy-saving prototype racing car is now completed.

[0015] Furthermore, in S1, designing a prototype energy-saving racing car model specifically includes:

[0016] Based on the requirements of the energy-saving racing competition and relevant data from racing drivers, a prototype teardrop-shaped, low-drag energy-saving racing car model was designed that fully complies with the competition rules;

[0017] The prototype energy-saving racing car model must not exceed 3000mm in length, 1000mm in maximum height and 1300mm in maximum width, in order to ensure that the vehicle's appearance fully complies with the requirements of the competition regulations and at the same time ensure a 10cm buffer distance between the driver and the car body.

[0018] Furthermore, in said S2, the segmentation adopts an inverted Z-shaped segmentation method, and a certain rounding process is performed on the segmentation curve;

[0019] The depth of the depression obtained by the depression treatment is 10mm, which is convenient for later window cutting.

[0020] Furthermore, in S2, the CNC processing specifically includes: using 25K foam as the material to perform CNC processing on the racing car mold.

[0021] Furthermore, in said S3, the surface of the car shell mold is pre-treated, specifically: using 2000-grit sandpaper to finely polish the surface of the car shell mold to make the surface of the car shell mold smoother;

[0022] Apply release wax multiple times. Specifically, apply 5 layers of release wax evenly on the surface of the car body mold, and the interval between each application of release wax must be more than 2 hours.

[0023] Furthermore, in the S4, the carbon fiber cloth uses 3K200g real carbon fiber cloth; a total of three layers of carbon cloth are cut, and the position and serial number of each layer of carbon fiber cloth are marked.

[0024] Furthermore, in the S5, a slow-drying two-component epoxy resin YT-CC302 is used, and the mixture is prepared in a ratio of 3:1 between A (epoxy resin) and B. After stirring evenly, the mixture is allowed to stand for 2 minutes and can be used when a slight heating phenomenon occurs.

[0025] In the step S6, the set standing time is 24 hours.

[0026] Furthermore, in the above S7, 8-10 magnets are pasted on the flange edges of the upper shell and the lower shell, wherein the specifications of the magnets are 70mm×20mm×0.5mm.

[0027] Furthermore, in S8, 0.8 mm thick PVC sheets are cut into the approximate shapes of the front and side windows, and the PVC sheets are placed in an oven at a constant temperature of 90°C and baked for half an hour. After the PVC sheets are softened, they are covered on the front and side windows and pressed until the PVC sheets cool down, thereby obtaining 1:1 replicas of the front and side windows.

[0028] On the other hand, the present invention also provides a split energy-saving racing car body, which is manufactured by the above-mentioned method for manufacturing the split energy-saving racing car body.

[0029] According to the specific embodiments provided by the present invention, the split energy-saving racing car shell and the manufacturing method thereof provided by the present invention disclose the following technical effects:

[0030] In terms of cost, the positive mold forming and split production methods are adopted to reduce the production links, material loss and labor costs; in terms of success rate and efficiency, the errors of negative mold turning are avoided, the process is simplified, and the success rate and efficiency are improved; in terms of performance, carbon fiber is used as raw material, the car shell is hard and complies with the racing regulations, ensuring the safety of the driver, and it has strong designability, can optimize the structural strength to achieve lightweight and improve the performance of the car; in terms of quality, the split production creates flange edge conditions to reduce the deformation of the car shell; in terms of connection method, magnet connection is used to ensure the tight adsorption, stability and accuracy of the car shell, and facilitate the driver's emergency escape and daily operation; in terms of sealing, the characteristics of PVC boards are studied, and precise pressing and molding are carried out to make the windows and the car shell fit tightly, with good waterproof performance; in terms of aesthetics, the recessed treatment of the windows on the mold achieves symmetrical beauty, and the molded windows fit the car shell to ensure overall beauty.

[0031] The present invention relates to the field of energy-saving prototype racing car production using carbon fiber as raw material, and aims to solve the problems of high cost and low success rate in the production of traditional car shells. By adopting a split production process, a new connection method and car window production technology, the production cost and labor cost are significantly reduced. Specifically, the present invention utilizes the plasticity of PVC boards to simplify the molding process of the car window shape, while solving the problem of the difficulty and time-consuming process of opening and covering the traditional car shell. The present invention effectively improves the success rate and efficiency of car shell production, reduces the workload in the later stage, improves the convenience of driver operation, and fully utilizes the characteristics of PVC materials. The present invention is suitable for the production of prototype cars and concept cars with complex shapes. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 This is a flow chart of a method for manufacturing a split energy-saving racing car shell according to the present invention;

[0034] Figure 2 Schematic diagram of the splitting method of the prototype vehicle of the inverted Z-shaped splitting of the present invention;

[0035] Figure 3 This is a schematic diagram of a vehicle window according to the present invention being recessed 10 mm inward;

[0036] Figure 4 This is a front view of the upper shell and window of the present invention after being recessed;

[0037] Figure 5 This is a diagram showing the locations for attaching magnets to the lower shell of the present invention;

[0038] Figure 6 This is a top view of the lower car shell after the magnets are attached;

[0039] Figure 7 A schematic diagram of a PVC reshaped sheet in the shape of a car window according to the present invention;

[0040] Figure 8 This is a schematic diagram of the vehicle shell segmentation curve of the present invention;

[0041] Explanation of the accompanying symbols: 1. Upper body; 2. Lower body; 3. Front window; 4. Side window; 5. Window recess; 6. Flange; 7. Magnet; 8. Window-shaped PVC reshaping board; 9. Body dividing curve. DETAILED DESCRIPTION

[0042] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0043] The present invention provides a split energy-saving racing car body and a manufacturing method thereof, aiming to solve a series of problems in the prior art, such as complex body manufacturing process, high cost, unstable quality, and difficulty in connection and window molding.

[0044] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0045] Example 1

[0046] like Figure 1 As shown, the method for manufacturing the split energy-saving racing car shell of the present invention includes the following steps:

[0047] S1, design a prototype energy-saving racing car model; specifically including:

[0048] Based on the requirements of the energy-saving racing competition and relevant driver data, a prototype teardrop-shaped, low-drag energy-saving racing car model that fully complies with the competition rules is designed in the Catia-Imagine&Shape module. The prototype car regulations of the Shell Eco-Marathon and the Honda Eco-Friendly Racing Competition can be used as reference standards. The human body model is loaded into the modeling software, and the position and size of the model's front window and two side windows are precisely determined based on the driver's field of view to ensure that they fully comply with the competition regulations. Based on previous experience and analysis, the most prone to deformation of the car body is determined, providing important reference for the subsequent separation position. The modeling software simulates the frame installation process, discusses and optimizes the vehicle's maintainability, and ensures that the car can be easily and quickly maintained in actual use.

[0049] The prototype energy-saving racing car model must not exceed 3000mm in length, 1000mm in height, and 1300mm in width, ensuring that the vehicle's shape fully complies with the regulations and that there is a 10cm buffer distance between the driver and the vehicle body.

[0050] Using modeling software, a racing car model was designed that complies with competition rules, fits the driver's body shape, minimizes wind resistance, and maintains aesthetic appeal. A prototype, energy-saving, teardrop-shaped racing car model with low wind resistance was designed. Wind resistance analysis was performed using analytical software, and a human model was assembled to simulate the driver's posture. Based on the driver's field of vision, the position and size of the model's front and two side windows were precisely determined to ensure full compliance with competition regulations and a fully protected field of vision for the driver.

[0051] S2, such as Figure 2 As shown in FIG, using Catia 3D modeling software, the designed prototype energy-saving racing car model is divided into two parts: the upper shell 1 and the lower shell 2, which facilitates subsequent production and assembly. In addition, the front window 3 and the side window 4 are recessed. Figure 3 After obtaining the model design file, CNC machining is performed to make the car shell mold; specifically, the following steps are involved:

[0052] S201, based on the frame design, performs assembly work in Catia 3D modeling software, accurately considering the required turning radius of the vehicle and the degree of fit between the body and frame. Based on this, the body is meticulously adjusted to ensure optimal overall vehicle performance.

[0053] S202, based on the maximum deformation locations of previous vehicles, conducted an in-depth analysis and discussed the comprehensive trade-offs between aesthetics, simplicity, and robustness. In combination with the ease of frame installation and maintenance in S201, a four-in-one split method was developed to minimize the workload and facilitate the work process during the subsequent body processing, while minimizing body deformation.

[0054] S203, combined with the results of S202, determine to adopt the inverted Z-type split method (such as Figure 2 ),like Figure 8 In the process, the dividing curve is rounded to obtain the vehicle shell dividing curve 9,3. This increases the contact area between the upper and lower vehicle shells, providing stability for the connection of the vehicle shells. This method not only cleverly conceals the separation traces under the vehicle, ensuring the vehicle's aesthetics, but also effectively restrains the upper and lower vehicle shells, reducing deformation of the upper and lower vehicle shells.

[0055] S204: To improve the ease of operation during the production process and ensure the convenience of connecting the upper and lower shells after the vehicle is formed, the upper and lower shells are rounded during the separation operation. This rounding process not only helps to reduce the deformation of the shell, but also significantly improves its stability.

[0056] S205, in order to facilitate the subsequent window positioning, the window position is also offset inward by 10mm, such as Figure 3 and Figure 4 As shown, it plays a positioning role, eliminating the subsequent window positioning work; to alleviate the difficulty of later window positioning and the problem of asymmetry on both sides of the car body;

[0057] S206, the split body design files are sent to the manufacturer, specifying 25K foam as the material and using CNC processing technology for processing and manufacturing.

[0058] S3, after the car shell mold is made, pre-treat the surface of the car shell mold to make the surface of the car shell mold smoother and more fluent, then stick a layer of tape on the surface of the car shell mold and apply release wax several times; specifically including:

[0059] S301: Assemble the CNC-processed car body mold and carefully check whether there are any defects on the surface of the car body mold. If the mold surface is found to be uneven, use 2000-grit sandpaper to finely polish the surface of the car body mold to make it smoother, thereby effectively improving the surface quality of the car body mold.

[0060] S302, evenly wrap a layer of ordinary tape on the mold surface to lay the foundation for the subsequent vehicle demoulding work. During the tape wrapping process, pay attention to controlling the force to avoid changing the mold shape due to improper force;

[0061] S303, evenly apply 5 layers of release wax on the surface of the car shell mold. After one layer of release wax is dry, apply the next layer. Repeat this process 5 times. The interval between each application of release wax must be more than 2 hours to ensure a smooth demoulding process.

[0062] S4, cutting carbon fiber cloth according to the shape of the car shell mold, laying the cut carbon fiber cloth to the flange edge 6 position, and making corresponding marks; specifically including:

[0063] 3K200g of real carbon fiber cloth was purchased in advance, and three layers of carbon fiber cloth were accurately cut according to the specific shape of the car body. The carbon fiber cloth should be laid to the flange edge. At the same time, the cut carbon fiber cloth was marked, clearly marking the first, second and third layers, and marking the key feature positions of the car body to ensure the accuracy and consistency of the layup.

[0064] S5, mixing epoxy resin A and B in a ratio of 3:1, ensuring uniform mixing, evenly coating the prepared resin on the cut carbon fiber cloth, and evenly coating a thin layer of the prepared resin on the tape of the vehicle shell mold to fix the first layer of carbon fiber cloth, and then laying the carbon fiber cloth flat layer by layer; specifically including:

[0065] S501, after the release wax is completely dried, prepare the resin according to the ratio of A (epoxy resin) to B = 3:1 in the two-component epoxy resin YT-CC302 (slow-drying type).

[0066] S502: Wait two minutes for the prepared resin to completely mix A and B, and evenly apply a thin layer of the fully stirred resin on the tape of the car shell mold to fix the first layer of carbon fiber cloth. Then, lay the carbon fiber cloth flat layer by layer, and ensure that every part of each layer of carbon fiber cloth is coated with resin and each layer of carbon fiber cloth is tightly fitted.

[0067] S6, after standing for 24 hours, the vehicle shell made of carbon fiber cloth is solidified and formed. After the vehicle shell is solidified and formed, the vehicle window is cut along the edge of the vehicle window recess 5, and the finished flange edge 6 is trimmed and polished. Then, the vehicle shell mold is removed from the vehicle shell;

[0068] Among them, after cutting, the foam is hollowed out to make the entire car shell separate from the car shell mold and become an independent individual. When hollowing out the foam, brute force should not be used to avoid deformation of the car shell.

[0069] S7, attaching magnets 7 to the flange edges 6 of the upper and lower car shells, and utilizing the magnetic force of magnets 7 to connect the upper and lower car shells;

[0070] Specifically, the flange plates prefabricated during the body manufacturing process are used to stick magnets (such as Figure 5 and Figure 6Attach 8-10 magnets 7, each measuring 70mm x 20mm x 0.5mm, to the flanges of the upper and lower housings 1 and 2. These miniature magnets 7 ensure a secure connection between the upper and lower housings 1 and 2 while preventing excessive magnetic force. The mutual attraction of the magnets ensures a tight fit between the upper and lower housings, preventing them from shifting after installation.

[0071] S8, baking and softening the PVC sheet. According to the shape of the front window 3, the softened PVC sheet is covered on the front window 3 to reshape it into the window shape. Finally, the reshaped PVC sheet is affixed to the window of the upper shell. The side windows 4 are made in the same way as the front windows 3. After the front windows 3 and side windows 4 are installed, the shell of the energy-saving prototype racing car is completed.

[0072] Specifically, the length and width of the front window are measured, and a 0.8 mm thick PVC sheet is cut into the approximate shape of the front window 3. The PVC sheet is placed in an oven at a constant temperature of 90°C and baked for half an hour. After the PVC sheet softens, it is quickly taken out and immediately covered on the front window 3. Press the PVC sheet until it cools down, thereby obtaining a 1:1 replica of the front window (such as Figure 7 Similarly, prepare the side windows 4. Finally, evenly apply hot melt adhesive to the edges of the front window 3 and the side windows 4 to firmly bond the PVC sheet to the vehicle body, completing the vehicle body production.

[0073] The manufacturing method described in the present invention is not limited to the manufacture of prototype vehicles, but is also applicable to the creation of various concept vehicles. This example hereby discloses an economical and efficient design scheme for a car body for a skills competition. The car body is made of carbon fiber, a lightweight and high-strength material. Through an innovative inverted Z-shaped split structure design, recesses are cleverly set at the window position to highlight the cutting lines. What is particularly unique is that magnets are used to connect the upper and lower car bodies. This design not only greatly reduces the deformation of the car body, but also makes the opening and closing of the car body more convenient and efficient. More importantly, the automatic self-returning characteristics of the magnetism effectively solve the problem of inaccurate docking position of the car body, ensuring the stability and accuracy of the connection. In addition, the PVC board is heated and softened in an oven and reshaped so that the window and the car body can be tightly fitted. This design not only conforms to the principles of aerodynamics and effectively reduces wind resistance, but also greatly improves the overall aesthetics of the car body.

[0074] Example 2

[0075] The present invention also provides a split energy-saving racing car shell, the overall shape of which is as follows Figure 8 As shown, it is manufactured by the above-mentioned method for manufacturing a split energy-saving racing car body, and the upper and lower car bodies are attracted together by magnets.

[0076] The split energy-saving racing car shell is used in the field of energy-saving competitive racing.

[0077] By adopting a split production process, a new connection method and window production technology, the present invention significantly reduces production costs and labor costs, effectively improves the success rate and efficiency of vehicle shell production, reduces the workload in the later stage, improves the convenience of driver operation, and fully utilizes the characteristics of PVC materials. It is suitable for the production of prototype vehicles and concept vehicles with complex shapes.

[0078] This document uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A method for manufacturing a split energy-saving racing car shell, characterized in that: The steps include: S1, design a prototype energy-saving racing car model; S2, using Catia 3D modeling software, the designed prototype energy-saving racing car model is divided into two parts: the upper shell (1) and the lower shell (2), and recessed processing is performed at the front window (3) and the side windows (4). After obtaining the model design file, CNC processing is performed to make the shell mold; S3, after the car shell mold is made, pre-treat the surface of the car shell mold to make it smooth and fluent, then stick a layer of tape on the surface of the car shell mold and apply release wax several times; S4, cutting the carbon fiber cloth according to the shape of the car shell mold, laying the cut carbon fiber cloth to the flange edge (6) position, and making corresponding marks; S5: Use YT-CC302S slow-drying epoxy resin. Component A is the epoxy resin base, and component B is the amine curing agent. Mix A and B in a ratio of 3:

1. Ensure the mixture is evenly mixed. Apply the prepared resin evenly to the cut carbon fiber cloth. Apply a thin layer of the prepared resin evenly to the tape of the car body mold to fix the first layer of carbon fiber cloth. Then, lay the carbon fiber cloth flat layer by layer. S6, after standing for a set time, the car shell is solidified and formed, the car window is cut along the edge of the car window recess (5), the flange edge (6) is trimmed and polished, and then the car shell mold is removed from the car shell; S7, sticking magnets (7) on the flange edges (6) of the upper and lower car shells, and using the magnetic force of the magnets (7) to connect the upper and lower car shells; S8, baking and softening the PVC plate, covering the front window (3) and the side window (4) with the softened PVC plate according to the shapes of the front window (3) and the side window (4), so as to reshape the front window (3) and the side window (4), and finally pasting the reshaped PVC plate to the front window (3) and the side window (4) of the upper shell, thus completing the production of the energy-saving prototype racing car shell.

2. The method for manufacturing a split energy-saving racing car shell according to claim 1, characterized in that: In said S1, a prototype energy-saving racing car model is designed, specifically including: Based on the requirements of the energy-saving racing competition and relevant data from racing drivers, a prototype teardrop-shaped, low-drag energy-saving racing car model was designed that fully complies with the competition rules; The prototype energy-saving racing car model must not exceed 3000mm in length, 1000mm in maximum height and 1300mm in maximum width, in order to ensure that the vehicle's appearance fully complies with the requirements of the competition regulations and at the same time ensure a 10cm buffer distance between the driver and the car body.

3. The method for manufacturing a split energy-saving racing car shell according to claim 1, characterized in that: In the above S2, the segmentation adopts an inverted Z-shaped segmentation method, and the segmentation curve is rounded to a certain extent; The depth of the depression obtained by the depression treatment is 10mm, which is convenient for later window cutting.

4. The method for manufacturing a split energy-saving racing car shell according to claim 1, characterized in that: In S2, the CNC processing specifically includes: using 25K foam as a material to perform CNC processing on the racing car mold.

5. The method for manufacturing a split energy-saving racing car shell according to claim 1, characterized in that: In S3, the surface of the vehicle shell mold is pretreated, specifically, the surface of the vehicle shell mold is finely polished using 2000-grit sandpaper to make the surface of the vehicle shell mold smoother; Apply release wax multiple times. Specifically, apply 5 layers of release wax evenly on the surface of the car body mold, and the interval between each application of release wax must be more than 2 hours.

6. The method for manufacturing a split energy-saving racing car shell according to claim 1, characterized in that: In the S4, the carbon fiber cloth uses 3K200g real carbon fiber cloth; a total of three layers of carbon cloth are cut, and the position and serial number of each layer of carbon fiber cloth are marked.

7. The method for manufacturing a split energy-saving racing car shell according to claim 1, characterized in that: In the S5, a slow-drying two-component epoxy resin YT-CC302 is used, and the mixture is prepared in a ratio of 3:1 between A (epoxy resin) and B. After stirring evenly, the mixture is allowed to stand for 2 minutes and can be used when a slight heating phenomenon occurs. In the step S6, the set standing time is 24 hours.

8. The method for manufacturing a split energy-saving racing car shell according to claim 1, characterized in that: In the above-mentioned S7, 8-10 magnets are pasted on the flange edges (6) of the upper shell (1) and the lower shell (2), wherein the specifications of the magnets are 70mm×20mm×0.5mm.

9. The method for manufacturing a split energy-saving racing car shell according to claim 1, characterized in that: In the step S8, a 0.8 mm thick PVC sheet is cut into the approximate shapes of the front window (3) and the side window (4), and the PVC sheet is placed in an oven at a constant temperature of 90° C. and baked for half an hour. After the PVC sheet is softened, it is covered on the front window (3) and the side window (4), and pressed until the PVC sheet cools down, thereby obtaining a 1:1 replica of the front window (3) and the side window (4).

10. A split energy-saving racing car shell, characterized in that: The split energy-saving racing car shell is manufactured by the manufacturing method of any one of claims 1 to 9.

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