Framework profile, electric vehicle roof and electric vehicle

Abstract

The utility model discloses a framework section bar, an electric vehicle roof and an electric vehicle, the framework section bar comprises a main pipe with a hollow structure and an auxiliary pipe with a hollow structure, and the main pipe and the auxiliary pipe are of a communicated integrated structure; the cross section area of the main pipe is larger than that of the auxiliary pipe, an inward concave groove is formed in the joint of the main pipe and the auxiliary pipe, and the groove is in smooth transition through a transition arc. The utility model further relates to two side frames of a ceiling framework of the electric vehicle, the ceiling framework further comprises a ceiling cross beam connected with the upper portions of the two side frames, a protection plate installed on the ceiling cross beam and a wind shielding component installed at the front end of the ceiling framework, and the integral framework sectional material is formed by bending. The bent main pipe is located on the upper portion, the auxiliary pipe is located below the main pipe, and the ceiling cross beam is fixedly connected to the main pipe. The skeleton profile, the electric vehicle roof and the electric vehicle are remarkable in overall technical effect, the strength, the attractiveness, the machining efficiency and the light weight level of the vehicle roof are improved, and the production cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of electric vehicle technology, and in particular relates to a frame profile, an electric vehicle roof, and an electric vehicle. Background Technology

[0002] In current electric vehicle roof designs, the frame is often constructed using a bent and welded square tube. However, this traditional square tube design has revealed numerous defects in practical applications, particularly regarding bending deformation. These issues negatively impact the overall performance and lifespan of the roof. The following is a detailed analysis of the defects in existing square tube designs, with a particular focus on the bending deformation problem.

[0003] 1. Welding quality and strength issues

[0004] During the manufacturing and welding process of square tubes, the strength of the welded joint often fails to reach the level of the base material due to the presence of the weld seam. The heat-affected zone generated during welding leads to a decline in material properties, especially in the heat-affected zone of the welded joint, where the material becomes more brittle, less tough, and prone to defects such as cracks. In addition, welding defects such as porosity and slag inclusions may also occur during the welding process, which further weaken the strength of the welded joint and affect the overall structural safety of the roof.

[0005] 2. Bending deformation and dimensional accuracy issues

[0006] During the bending process, the square tube's cross-sectional shape leads to uneven stress on each side, making it difficult to precisely control its shape and dimensions after bending. Especially during large-angle bends or complex shape bends, the square tube is prone to twisting, deformation, and even breakage. This deformation not only affects the aesthetics of the roof but, more importantly, can cause poor fit between the roof and other vehicle body components, impacting the vehicle's sealing and safety.

[0007] Bending deformation can also lead to uneven stress distribution in the roof frame, increasing the risk of fatigue damage during long-term use. Especially when electric vehicles are in motion, the roof frame needs to withstand various loads from wind pressure, vibration, etc. If there is stress concentration or deformation in the frame, it will greatly shorten the service life of the roof.

[0008] 3. Processing efficiency and cost issues

[0009] The bending process of square tubes requires specialized equipment and techniques, making it difficult and inefficient. During bending, multiple corrections and adjustments are often necessary to ensure shape and dimensional accuracy, which not only increases processing time but also raises production costs.

[0010] Therefore, this utility model provides a frame profile, an electric vehicle roof, and an electric vehicle that improves the strength, aesthetics, processing efficiency, and lightweighting of the roof while reducing production costs and maintenance difficulty. Utility Model Content

[0011] In view of the problems existing in the prior art, this utility model provides a frame profile, electric vehicle roof, and electric vehicle that improves the strength, aesthetics, processing efficiency, and lightweight level of the roof, while reducing production costs and maintenance difficulty.

[0012] This utility model is implemented as follows: a skeleton profile, characterized in that: it includes a hollow main tube and a hollow secondary tube, the main tube and the secondary tube being an integral structure; the cross-sectional area of ​​the main tube is larger than the cross-sectional area of ​​the secondary tube, and an inwardly recessed groove is formed at the junction of the main tube and the secondary tube, the groove being smoothly transitioned by a transition arc.

[0013] Preferably, the main pipe and the auxiliary pipe are connected.

[0014] Preferably, the cross-section of the main pipe and / or the auxiliary pipe is circular or elliptical.

[0015] This utility model also discloses an electric vehicle roof, including a roof frame, the roof frame including at least two side frames, and a roof beam connecting the upper part of the two side frames for installing a protective plate. The side frames are formed by bending the above-mentioned frame profile, with the main pipe located on top after bending, the secondary pipe located below the main pipe, and the roof beam fixedly connected to the main pipe.

[0016] More preferably, the main pipe is welded with a beam connecting seat that connects to the ceiling beam.

[0017] This utility model also relates to an electric vehicle, a frame, and a roof mounted on the frame, characterized in that: the roof adopts the aforementioned roof design.

[0018] More preferably, at least one end of the main body of the side frame is provided with a frame mounting seat that is fixedly connected to the frame.

[0019] More preferably, the rear end of the side frame is provided with a frame mounting seat that is fixedly connected to the frame. The frame mounting seat is fixedly connected to the rear frame of the frame by fasteners. The front main tube of the side frame is inserted into the front upright of the frame, and fastening bolts are provided along the direction perpendicular to the main tube to achieve a fixed connection between the main tube and the front upright of the frame.

[0020] In a further preferred embodiment, a tarpaulin curtain is fixedly installed on the secondary pipe.

[0021] The advantages and technical effects of this utility model are summarized as follows: The overall technical effects of the frame profile, the electric vehicle roof, and the electric vehicle are described below.

[0022] This frame profile features a unique groove structure formed by integrating the hollow main and secondary pipes, with a smooth transition arc, significantly improving structural strength and stability. This design effectively avoids stress concentration, allowing the frame profile to distribute stress more evenly when subjected to external forces, resisting deformations such as bending and torsion, and ensuring stability and safety during long-term use.

[0023] Meanwhile, the hollow structure and integrated design of the frame profiles reduce bending deformation, improve processing accuracy and consistency, and lower the cost of correction and adjustment during production. Furthermore, the elimination of complex welding processes simplifies the production flow, increases production efficiency, and reduces production costs. The hollow structure design also improves material utilization, reduces material weight, and helps enhance the range and driving performance of electric vehicles, thus improving their environmental friendliness.

[0024] In the application of electric vehicle roofs, this frame profile serves as the side frame, and is bent into the required shape to combine with roof beams, protective panels, and windbreak components to form a complete roof structure. This type of roof not only has excellent structural performance and stability, but also meets diverse design and installation requirements.

[0025] In summary, the frame profile, the electric vehicle roof, and the overall electric vehicle demonstrate significant technological advantages, not only improving the performance and quality of the roof but also reducing production costs. This innovative design concept and technical solution provides strong support for the manufacturing and application of electric vehicle roofs, possessing broad market prospects and application value. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this utility model;

[0027] Figure 2 yes Figure 1 Schematic diagram of the cross-section structure in the middle K direction;

[0028] Figure 3 This is a schematic diagram of the roof structure of an electric vehicle;

[0029] Figure 4 This is a schematic diagram of the installation structure of the roof of an electric vehicle;

[0030] Figure 5 yes Figure 4 A sectional view;

[0031] Figure 6 This is a schematic diagram of the roof structure of an electric vehicle without a canopy or curtain.

[0032] Figure 7 This is a schematic diagram of the roof structure of an electric vehicle with a canopy curtain.

[0033] Figure 8 This is a schematic diagram of the tarpaulin curtain installation structure;

[0034] Figure 9 This is a schematic diagram of the fastener structure.

[0035] In the diagram: 1. Main pipe; 2. Sub-pipe; 3. Groove; 4. Transition arc; 5. Side frame; 5-1. Frame mounting seat; 6. Roof crossbeam; 6-1. Crossbeam connecting seat; 7. Protective plate; 8. Roof frame; 9. Frame; 9-1. Positioning pin; 9-2. Front upright of the frame; 10. Canopy curtain; 11. Fastener. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0037] Example 1, please refer to Figure 1 and Figure 2 A skeleton profile includes a hollow main pipe 1 and a hollow secondary pipe 2, which are integrally connected; the cross-sectional area of ​​the main pipe is larger than that of the secondary pipe, and the preferred area ratio of the main pipe to the secondary pipe is 5:3 to 2:1. An inwardly recessed groove 3 is formed at the junction of the main pipe and the secondary pipe, and the groove is smoothly transitioned by a transition arc 4.

[0038] Needs to be explained Figure 1 The model shown is only a skeleton profile of a car model and is not a limiting factor. Such skeleton profiles can be rolled into shape in one step according to the actual required length, and then bent into shape according to the final product. The main pipe 1 and the auxiliary pipe 2 are preferably made of high-strength materials such as steel pipe or aviation aluminum.

[0039] The frame profile of this utility model, with its unique hollow structure design and integrated combination of main and auxiliary pipes, demonstrates significant technical effects. It not only overcomes many defects of existing square tube welded car roof frames, but also shows great advantages in improving car roof performance, reducing production costs, increasing material utilization, and enhancing environmental protection.

[0040] The following is a detailed analysis of the technical effects of this utility model:

[0041] 1. Significantly improves structural strength and stability

[0042] The skeleton profile in this invention forms a unique groove structure through the integrated combination of the hollow main and secondary pipes, with a smooth transition arc effectively avoiding stress concentration. This design allows the skeleton profile to distribute stress more evenly when subjected to external forces, thus significantly improving its structural strength and stability. Compared to traditional square tube bending or welding structures, the skeleton profile in this invention is more resistant to bending, twisting, and other deformations, ensuring the stability and safety of the roof during long-term use.

[0043] 2. Effectively reduces bending deformation and improves machining accuracy.

[0044] Traditional square tubes are prone to deformation during bending, affecting processing accuracy. However, the skeleton profile in this invention, due to its unique hollow structure and integrated design, better maintains shape and dimensional stability during bending. In particular, the groove structure and transition arc design effectively reduce deformation caused by stress concentration, improving processing accuracy and consistency. This not only reduces correction and adjustment costs during production but also enhances the overall quality and aesthetics of the roof.

[0045] 3. Improve production efficiency and reduce production costs.

[0046] The skeleton profile of this invention requires no complex welding processes during manufacturing; production can be completed through simple cutting, bending, and assembly. This not only simplifies the production process but also improves production efficiency. Furthermore, the reduction in welding steps lowers the requirements for welding equipment and technology, thereby reducing production costs. In addition, the hollow structure design allows for higher material utilization, reduces waste generation, and further lowers production costs.

[0047] 4. Enhance material utilization and environmental friendliness

[0048] The frame profile in this invention adopts a hollow structure design, which significantly reduces material weight and improves material utilization while maintaining the same strength compared to traditional square tubes. This not only reduces the overall weight of the roof but also helps improve the range and driving performance of electric vehicles.

[0049] Preferably, the radius of the transition arc is 2~5mm; although the specific value needs to be determined according to the actual application scenario and design requirements, we can analyze the technical effect brought about by this technical feature, especially its characteristic that "it is not too large and can be used as a groove for fixing tarpaulins or sealing strips".

[0050] Enhance structural stability:

[0051] The smooth design of the transition arc reduces stress concentration points, allowing the frame profile to distribute stress more evenly when subjected to external forces, thus improving structural stability. The presence of the groove structure also increases the torsional resistance of the frame profile, making the roof more stable when subjected to lateral wind pressure or bumpy road conditions.

[0052] Improve installation convenience:

[0053] The moderate groove width and transition radius make the installation of tarpaulins or sealing strips easier. Operators can easily snap them into the groove without excessive adjustment or force. This ease of installation not only improves production efficiency but also reduces the risk of damage during the installation process.

[0054] Preferably, the main pipe and the secondary pipe are interconnected. This brings significant technical benefits to the frame profile. First, the interconnected design allows the main pipe and the secondary pipe to form a continuous space inside, which helps to enhance the overall structural integrity and stability of the frame profile. When subjected to external forces, the interconnected structure can more effectively transfer and disperse stress, avoiding deformation or damage caused by local stress concentration.

[0055] Preferably, the main pipe and / or auxiliary pipe have a circular or elliptical cross-section. Circular or elliptical cross-section profiles are more visually appealing and streamlined, aligning with modern design trends. This cross-sectional shape also offers good processing performance, facilitating bending, cutting, and other treatments to meet diverse design and installation needs.

[0056] Please see Figures 3 to 5 This utility model also discloses an electric vehicle roof, including a roof frame 8, the roof frame including at least two side frames 5, and a roof beam 6 connecting the upper part of the two side frames for installing a protective plate 7. The side frames are formed by bending the above-mentioned frame profile. After bending, the main pipe is located on the top and the secondary pipe is located below the main pipe. The roof beam is fixedly connected to the main pipe.

[0057] Further preferably, the main pipe is welded with a beam connecting seat 6-1 that connects to the ceiling beam. This improves assembly efficiency.

[0058] Please see Figure 6 This utility model also relates to an electric vehicle, a frame 9, and a roof mounted on the frame, wherein the roof adopts the aforementioned roof design.

[0059] More preferably, at least one end of the main pipe of the side frame is provided with a frame mounting seat 5-1 for fixed connection to the frame. The frame is provided with a locating pin 9-1 that matches the inner diameter of the main pipe. The main pipe of the side frame is inserted into the locating pin, and then the frame mounting seat is fixedly connected to the frame using fasteners. This technical feature achieves a stable installation of the main pipe of the side frame on the frame through the tight connection between the frame mounting seat and the frame. The design of the locating pin ensures precise alignment between the main pipe and the frame, improving the accuracy and efficiency of assembly. At the same time, the use of fasteners further enhances the reliability and stability of the connection, allowing the side frame to be firmly fixed to the frame, effectively improving the structural strength and safety of the entire vehicle.

[0060] More preferably, the rear end of the side frame is provided with a frame mounting seat 5-1 that is fixedly connected to the frame. The frame mounting seat is fixedly connected to the rear frame of the frame by fasteners. The front main tube of the side frame is inserted into the front upright 9-2 of the frame, and fastening bolts are provided along the direction perpendicular to the main tube to achieve a fixed connection between the main tube and the front upright of the frame.

[0061] Please see Figures 7 to 9 A tarpaulin curtain 10 is fixedly installed on the secondary pipe. This effectively improves the vehicle's shielding and protection capabilities. The installation of the tarpaulin curtain not only enhances the vehicle's sealing performance, preventing the intrusion of external dust and rainwater, but also improves the overall aesthetics of the vehicle.

[0062] The tarpaulin curtain is mounted on the secondary tube via a fastener 11 with a groove that matches the cross-sectional shape of the outer secondary tube. The lower part of the groove is connected to the tarpaulin curtain 10 by means of fasteners such as stitching, hot-melt bonding, Velcro bonding, bolts, and rivets. This technical feature, through the design of the fastener with a groove, achieves a secure installation of the tarpaulin curtain and the secondary tube. The groove design, consistent with the cross-sectional shape of the secondary tube, ensures the fit and stability of the tarpaulin curtain installation. The use of fasteners further strengthens the connection between the tarpaulin curtain and the fastener, effectively preventing the tarpaulin curtain from shaking or falling off during vehicle operation, thus improving the vehicle's sealing and safety.

[0063] The overall technical effect of the electric vehicle's roof is remarkable, specifically in the following aspects:

[0064] First, the roof frame is made of specially designed bent frame profiles, making the side frame structure both lightweight and sturdy. The main pipe is located at the top, bearing the main load, while the secondary pipe is located at the bottom, providing additional support and stability. This design enhances the overall wind pressure resistance and earthquake resistance of the roof.

[0065] Secondly, the roof beams are fixedly connected to the main pipe, providing a solid installation base for the skid plates and ensuring their stability and safety. The welded design of the frame mounting brackets makes the connection between the roof and the frame even more secure and reliable.

[0066] Finally, the tarpaulin curtain, fixedly installed on the secondary tube, is easily and quickly mounted using fasteners. It not only provides excellent sunshade and rain protection but also enhances the roof's sealing and aesthetics. The overall design is reasonable, the structure is compact, and it is easy to install and maintain, meeting the diverse usage needs of electric vehicle roofs.

[0067] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A skeletal profile, characterised in that: The main pipe and the auxiliary pipe are integrated structure, the cross-sectional area of the main pipe is larger than that of the auxiliary pipe, and the joint of the main pipe and the auxiliary pipe forms a concave groove which is smoothly connected by a transition arc.

2. The skeletal profile according to claim 1, characterized in that: The main pipe and the auxiliary pipe are connected.

3. The skeletal profile according to claim 1, characterized in that: The cross section of the main pipe and / or the auxiliary pipe is circular or elliptical.

4. The skeletal profile according to claim 1, characterized in that: The cross-sectional area ratio of the main pipe to the auxiliary pipe is 5:3-2:

1.

5. An electric vehicle roof comprising a roof framework, the roof framework comprising at least two side frames, a roof cross member connecting upper portions of the two side frames for mounting a roof panel, characterised in that: The side frame is made of the skeleton profile according to any one of claims 1-4, the main pipe is located above after bending, the auxiliary pipe is located below the main pipe, and the roof beam is fixedly connected to the main pipe.

6. The electric vehicle roof panel of claim 5, wherein: A beam connecting seat connected to the roof beam is welded on the main pipe.

7. An electric vehicle, a vehicle frame, a vehicle roof mounted on the vehicle frame, characterized in that: The roof is made of the roof according to claim 5.

8. The electric vehicle of claim 7, wherein: At least one end of the main pipe of the side frame is provided with a frame fixing seat fixedly connected to the frame.

9. The electric vehicle of claim 7, wherein: The rear end of the side frame is provided with a frame fixing seat fixedly connected to the frame, the frame fixing seat is fixedly connected to the rear frame of the frame through fasteners, the front end of the main pipe of the side frame is inserted into the front vertical column of the frame, and fastening bolts are arranged in the direction perpendicular to the main pipe to achieve the fixed connection between the main pipe and the front vertical column of the frame.

10. The electric vehicle of claim 7, wherein: A tarp door curtain is fixedly installed on the auxiliary pipe.

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