Car body structure of carbon fiber passenger car

Abstract

According to the car body structure of the carbon fiber passenger car, an integrated carbon fiber car body is adopted, a steel plate is embedded in the car body, the car body structure has a certain thickness and is good in sound insulation and heat preservation performance, and the problems that a traditional steel car body is large in weight and poor in anti-rust capacity, and a skin is prone to deformation are solved by combining the convex support assembly and the modular skin design. The structure has the advantages of light weight, high strength, corrosion resistance and high stability, and is suitable for various passenger car models.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of bus body structure, and concretely relates to a bus body structure of carbon fiber bus. BACKGROUND

[0002] The conventional bus body adopts ordinary square steel (such as Q345) welded framework structure, prevents rust through electrophoresis process, fills the gap through foaming process to improve air tightness and heat insulation, and fixes the skin through welding or riveting. However, the prior art has the following defects:

[0003] Lightweight is insufficient: the bus body framework needs to increase welded parts to improve strength, leading to weight increase; rust prevention ability is poor: the welded joint and internal area electrophoretic coating are weak and prone to corrosion; heat insulation effect is poor: the foaming process cannot fill narrow areas, and the heat insulation cotton coverage range is limited; the skin is prone to deformation: the welding fixing mode is prone to stress concentration, and the skin is prone to depression or cracking.

[0004] Therefore, the applicant proposes the present application after studying the prior art. CONTENT OF THE UTILITY MODEL

[0005] The utility model provides a bus body structure of carbon fiber bus, aims at improving at least one of the above technical problems.

[0006] In order to solve the above technical problems, the utility model provides a bus body structure of carbon fiber bus, which comprises an integrally formed carbon fiber bus body, a steel plate is embedded in the carbon fiber bus body, and the edge is gradually thin. It also includes a convex support assembly composed of a side window column, a skin column and a convex waist beam, and the convex support assembly is fixed on the carbon fiber bus body through riveting at the bottom of both sides. The side window column is used as the supporting base of the side window glass. It also includes a skin assembly, which is modularly arranged and includes a front skin module, a middle skin module and a rear skin module. The bottom of the skin assembly is fixedly connected with an aluminum pipe group, and the aluminum pipe group is fixedly connected with the skin column and the convex waist beam respectively, so that the skin module is connected with the carbon fiber bus body.

[0007] As a further optimization, one side of the aluminum pipe group is connected to the skin assembly by adhesive, and the other side is connected to the skin column and the convex waist beam by adhesive.

[0008] As a further optimization, the aluminum pipe group is connected to the low side end of the skin column and the convex waist beam, so that the end face of the aluminum pipe group and the support assembly is located on the same plane.

[0009] As a further optimization, a plurality of uniformly spaced skin pads are also included, one side of the skin pad is fixedly connected with the carbon fiber bus body, and the other side is used to support and connect the skin assembly.

[0010] As further optimization, a skirt skin pad fixedly connected to the bottom of the carbon fiber vehicle body is also included, which is used to support the skin assembly on the bottom.

[0011] As further optimization, the skirt skin pad is provided with a notch for avoiding the bolt connection hole.

[0012] As further optimization, the top of the carbon fiber vehicle body is designed in an arc shape for connecting a roof.

[0013] The carbon fiber vehicle body structure provided by the present application has the following beneficial effects:

[0014] The carbon fiber vehicle body structure provided by the present application has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced as follows, and it should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0016] Figure 1 is a structure schematic view of the carbon fiber vehicle body structure of the present application without skin;

[0017] Figure 2 is a structure schematic view of the carbon fiber vehicle body structure of the present application without skin; Figure 1

[0018] Figure 3 is a complete structure schematic view of the carbon fiber vehicle body in an embodiment of the present application;

[0019] Figure 4 is a complete structure schematic view of the carbon fiber vehicle body in an embodiment of the present application; Figure 3

[0020] ​​Marked in the figure: 1, carbon fiber vehicle body; 2, side window pillar; 3, side window hole; 4, convex waist beam; 5, skin pillar; 6, skin pad; 7, steel plate; 8, skirt skin pad material; 9, rear skin module; 10, middle skin module; 11, front skin module; 12, skin. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0022] As shown in Figures 1 to 4 , the embodiment of the present application provides a vehicle body structure of a carbon fiber passenger car, which comprises an integrally formed carbon fiber vehicle body 1, the carbon fiber vehicle body 1 internally pre-buried with a steel plate 7 having a certain thickness and good sound insulation and heat preservation performance, without the need for further foaming and electrophoresis process as required by conventional vehicle bodies. Meanwhile, compared with steel and aluminum alloy skeletons, the carbon fiber vehicle body 1 has better strength, rigidity and corrosion resistance, is more lightweight, and is more than 30% lighter than traditional steel vehicle bodies. As shown in Figure 2 A-A and B-B, the edge of the carbon fiber vehicle body 1 is gradually thin, which is beneficial to connection with other skeletons, wherein the top is designed in an arc shape for connection with a top cover.

[0023] Preferably, it further comprises a convex support assembly composed of the side window pillar 2, the skin pillar 5 and the convex waist beam 4, as shown in Figure 2 C-C, the specific structure of each component of the convex support assembly presents low sides horizontally flush on both sides, high sides axially outwardly protruding in a rectangular shape in the middle, the convex support assembly is fixed to the carbon fiber vehicle body 1 through riveting at the bottom end of the low sides on both sides, and special glue is used to reinforce the connection effect, and the areas in contact with each other are connected through welding; wherein the side window pillar 2 is located on both sides of the side window hole 3, and is mainly used as a supporting base for side window glass, avoiding the problem of insecure fixation of the side window glass directly on the carbon fiber vehicle body 1. The skin pillar 5 and the convex waist beam 4 are used as profile supporting bases for the skin 12 on the outside of the carbon fiber vehicle body 1, so as to improve the flatness of the skin 12.

[0024] Preferably, the skin assembly is modularly arranged, including a front skin module 11, a middle skin module 10 and a rear skin module 9. Through the modular design, it can better adapt to different sizes and shapes of different regions of the carbon fiber vehicle body 1. It can adapt to the curvature changes of different parts of the carbon fiber vehicle body 1, and better ensure the flatness and aesthetic effect.

[0025] Preferably, the bottom of the skin assembly is fixedly connected with an aluminum pipe group, which is composed of aluminum pipes to form a rectangular frame to ensure the flatness of the skin 12. The aluminum pipe group is fixedly connected with the skin column 5 and the convex waist beam 4 respectively, so that the skin module is connected to the carbon fiber vehicle body 1. The aluminum pipes of the aluminum pipe group provide four riveting points around the skin 12 and a middle adhesive area, which can improve the stability and mechanical properties of the skin 12. One side of the aluminum pipe group is connected to the skin assembly by adhesion, and the other side is connected to the skin column 5 and the convex waist beam 4 by adhesion. Further, the aluminum pipe group is connected to the end face of the low side end of the skin column 5 and the convex waist beam 4, so that the side of the aluminum pipe group away from the carbon fiber vehicle body 1 and the end face of the convex part of the support assembly are located on the same plane, so as to avoid stress concentration.

[0026] Through the modular design, the skin 12 can better fit the aluminum material at the bottom and be flat; the skin modularization can be applied to the parts with larger curvature of the carbon fiber vehicle body 1, ensuring the precision and quality of the skin 12; and the problem of cracks and falling of the overall skin 12 due to deformation can be avoided.

[0027] Further, a plurality of uniformly spaced skin pads 6 are provided, one side of which is fixedly connected with the carbon fiber vehicle body 1 by riveting and adhesion, and the other side is used to support and connect the skin assembly by riveting or adhesion. By providing the skin pad 6, the skin 12 can be prevented from being concave and deformed locally, making the skin 12 more stable.

[0028] Preferably, a skirt skin pad 8 is fixedly connected to the bottom of the carbon fiber vehicle body 1, which is used to support and stabilize the skin assembly at the bottom of the carbon fiber vehicle body 1. The skirt skin pad 8 is provided with a notch to avoid the bolt connection hole.

[0029] The body structure of the carbon fiber passenger car has large strength and rigidity and strong resistance to deformation; the body structure is integral and has no cavity inside, has good heat and sound insulation effects and does not need foaming treatment; has good corrosion resistance and does not need electrophoresis process; the embedded plate inside is formed together with the carbon fiber body 1 by injection molding and will not easily fall off; the profile periphery is designed to be thin and can be spliced with different material frames. Through the convex support assembly, the skin 12 can be uniformly stressed to ensure flatness. Meanwhile, riveting positions and gluing areas are provided, the skin 12 does not need to be welded and fixed, the local deformation stress concentration phenomenon caused by welding is avoided, and the appearance and sealing of the whole vehicle are improved. The modularized skin 12 can disperse stress concentration, the bottom is supported by structures such as aluminum pipes, cushion blocks and aluminum beams, and in this way, the installation difficulty can be reduced and maintenance and replacement are facilitated.

[0030] The preferred embodiments of the present application are described above, but the present application is not limited to the above. Any modification, equivalent replacement, improvement, etc. within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A body structure of a carbon fiber passenger car, characterized by, The carbon fiber vehicle body is internally embedded with a steel plate, and the edge is gradually thinned. The convex support assembly is composed of a side window pillar, a skin pillar and a convex waist beam, and is fixed to the carbon fiber vehicle body by riveting at the bottom ends on both sides. The skin assembly is modularly arranged and includes a front skin module, a middle skin module and a rear skin module.

2. A body structure for a carbon fiber passenger vehicle according to claim 1, characterized in that One side of the aluminum tube group is connected to the skin assembly by adhesive, and the other side is connected to the skin pillar and the convex waist beam by adhesive.

3. A body structure for a carbon fiber passenger vehicle according to claim 2, characterized in that The aluminum tube group is connected to the low side end of the skin pillar and the convex waist beam, so that the end face of the aluminum tube group and the support assembly are located on the same plane.

4. A body structure for a carbon fiber passenger vehicle according to claim 1, characterized in that The skin assembly is modularly arranged and includes a front skin module, a middle skin module and a rear skin module.

5. A body structure for a carbon fiber passenger vehicle according to claim 1, characterized in that The skirt skin pad material is used to support the skin assembly at the bottom.

6. A body structure for a carbon fiber passenger vehicle according to claim 5, characterized in that The skirt skin pad material is designed with a notch to avoid the bolt connection hole.

7. A body structure for a carbon fiber passenger vehicle according to claim 1, characterized in that The top of the carbon fiber vehicle body is designed with an arc to connect the roof.

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