Electric tricycle

Abstract

The utility model discloses an electric tricycle which comprises a tricycle frame, a ceiling installed on the tricycle frame, an A column assembly installed between the ceiling and the tricycle frame on the tricycle head side of the tricycle frame and a tricycle door connected with the A column assembly. The ceiling comprises a ceiling framework and a wind shielding component, the ceiling framework at least comprises two side frames and a ceiling cross beam connected to the two side frames and used for installing the wind shielding component, each side frame comprises a main pipe of a hollow structure and an auxiliary pipe of a hollow structure, and the main pipe and the auxiliary pipe are of a communicated integrated structure; the main pipe and the auxiliary pipe are the same in geometrical shape and geometrical size, or the main pipe and the auxiliary pipe are the same in geometrical shape, but the inner diameter of the main pipe is larger than that of the auxiliary pipe. The 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 whole technical effect of the electro-tricycle is remarkable, the strength, the attractiveness, the machining efficiency and the light weight level of the tricycle 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 an electric tricycle. 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 an electric tricycle 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 an electric tricycle 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: an electric tricycle includes a frame, a canopy mounted on the frame, an A-pillar assembly installed between the canopy and the frame on the front side of the frame, and a door connecting the A-pillar assembly; characterized in that:

[0013] The canopy includes a canopy frame and windbreak components. The canopy frame includes at least two side frames and a canopy beam for installing the windbreak components connected to the two side frames. Each side frame includes a hollow main pipe and a hollow secondary pipe, which are a connected integral structure. The main pipe and the secondary pipe have the same geometry and dimensions, or the main pipe and the secondary pipe have the same geometry, but the inner diameter of the main pipe is larger than that of the secondary pipe. The main pipe is located above the secondary pipe, and the canopy beam is fixedly connected to the main pipe.

[0014] More preferably, the main pipe of the side frame is welded with a beam connecting seat that connects to the ceiling beam.

[0015] 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.

[0016] More preferably, the front and / or rear ends of the frame are fixedly installed with positioning pins, and the main pipes of the side frame of the roof frame are inserted into the positioning pins and fastened to the frame by fasteners.

[0017] More preferably, the A-pillar assembly includes an A-pillar frame and a rearview window and A-pillar guard plate mounted on the A-pillar frame.

[0018] More preferably, the A-pillar frame is fixedly connected to the roof frame and the electric vehicle frame.

[0019] More preferably, the A-pillar frame is provided with a connecting seat, which is detachably connected to the roof frame and the vehicle frame by fasteners.

[0020] More preferably, the upper edge of the door cooperates with the secondary tube of the side frame of the roof frame to achieve door positioning and sealing.

[0021] More preferably, the vehicle door includes an outer protective panel and an inner protective panel, and the upper part of the outer protective panel and the inner protective panel is provided with a window; the outer protective panel and the inner protective panel are integrally blow-molded, and there is a hollow cavity between the outer protective panel and the inner protective panel. A reinforcing frame is provided on the inner side of the inner protective panel, and the outer protective panel and the inner protective panel are provided with door lock mounting grooves or mounting holes for installing door locks.

[0022] More preferably, the reinforcing frame on the inner side of the door is hinged to the A-pillar frame of the A-pillar assembly.

[0023] The advantages and technical effects of this utility model are summarized as follows: The overall technical effects of this electric tricycle are as follows:

[0024] 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.

[0025] 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.

[0026] 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.

[0027] In conclusion, the overall technical benefits of this electric tricycle are significant, 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, and has broad market prospects and application value. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this utility model;

[0029] Figure 2 This is a schematic diagram of the frame and roof skeleton installation structure in Example 1;

[0030] Figure 3 This is a schematic diagram of the cross-sectional structure of the frame and roof skeleton in Example 1;

[0031] Figure 4 This is a schematic diagram of the ceiling frame structure of Example 1;

[0032] Figure 5 This is a schematic diagram of the side frame structure of Embodiment 1;

[0033] Figure 6 This is the front view of the car door in Embodiment 1;

[0034] Figure 7 This is a rear view of the car door in Embodiment 1;

[0035] Figure 8 and Figure 9 This is a schematic diagram of the three-dimensional structure of the car door in Embodiment 1;

[0036] Figure 10 This is a partial enlarged view of the door lock mounting groove in Embodiment 1;

[0037] Figure 11 yes Figure 6 Sectional view of AA;

[0038] Figure 12 This is a schematic diagram of the sealing component and the door sealing structure in Example 1;

[0039] Figure 13 This is a schematic diagram of the connection structure between the reinforced frame and the A-pillar frame in Example 1;

[0040] Figure 14 This is a schematic diagram of the structure after removing the A-pillar assembly and the door in Embodiment 1;

[0041] Figure 15 This is a schematic diagram of the sealing component installed on the side frame in Embodiment 2;

[0042] Figure 16 This is a schematic diagram of the structure of Embodiment 3 of this utility model.

[0043] In the diagram: 1. Frame; 2. Roof; 2-1. Roof frame; 2-2. Windshield component; 2-10. Side frame; 2-11. Roof crossbeam; 2-12. Main tube; 2-13. Sub-tube; 2-14. Groove; 2-3. Crossbeam connector; 2-4. Frame mounting bracket; 2-5. Positioning pin; 3. A-pillar assembly; 3-1. A-pillar frame; 3-2. Rear window; 3-3. A-pillar guard plate; 3-4. Connecting bracket; 4. Door; 41. Outer guard plate; 41-1. Door lock mounting groove; 41-2. Door lock mounting plate; 42. Inner guard plate; 43. Window; 44. Reinforcing frame; 44-1. Horizontal frame beam; 44-2. Vertical frame beam; 44-3. Diagonal tie rod; 44-4. Frame receiving groove; 45. Fastener; 46. Sealing component. Detailed Implementation

[0044] 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.

[0045] Example 1, please refer to Figures 1 to 13 An electric tricycle includes a frame 1, a canopy 2 mounted on the frame, an A-pillar assembly 3 installed between the canopy and the frame on the front side of the frame, and a door 4 connected to the A-pillar assembly. This electric tricycle cleverly integrates key elements such as the frame, canopy, A-pillar assembly, and door. The frame serves as the basic support, the canopy provides sun and rain protection, and the A-pillar assembly enhances the structural strength and safety of the front of the vehicle. The door, tightly connected to the A-pillar assembly, not only facilitates passenger entry and exit but also further improves the overall stability of the vehicle. The organic combination of these components constitutes a robust and practical overall structure for the electric tricycle.

[0046] The canopy 2 includes a canopy frame 2-1 and a windbreak component 2-2. The canopy frame includes at least two side frames 2-10 and a canopy beam 2-11 connecting the two side frames for installing the windbreak component. The side frames include a hollow main pipe 2-12 and a hollow secondary pipe 2-13, which are a connected integral structure. The main pipe and the secondary pipe have the same geometry, but the inner diameter of the main pipe is larger than that of the secondary pipe. The preferred area ratio of the main pipe to the secondary pipe is 5:3 to 2:1. An inwardly recessed groove 2-14 is formed at the junction of the main pipe and the secondary pipe, and the groove is smoothly transitioned by a transition arc. The main pipe is located above, the secondary pipe is located below the main pipe, and the canopy beam is fixedly connected to the main pipe.

[0047] Needs to be explained Figure 1 The image shown is merely a skeleton profile for one vehicle model and is not a limiting factor. Such skeleton profiles can be bent and shaped according to the actual needs of the final product.

[0048] Preferably, the main pipe 1 and the auxiliary pipe 2 are made of high-strength materials such as steel pipe or aviation aluminum.

[0049] 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.

[0050] The following is a detailed analysis of the technical effects of this utility model:

[0051] 1. Significantly improves structural strength and stability

[0052] 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.

[0053] 2. Effectively reduces bending deformation and improves machining accuracy.

[0054] 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.

[0055] 3. Improve production efficiency and reduce production costs.

[0056] 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.

[0057] 4. Enhance material utilization and environmental friendliness

[0058] 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.

[0059] 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".

[0060] Enhance structural stability:

[0061] 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.

[0062] Improve installation convenience:

[0063] 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.

[0064] 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.

[0065] 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.

[0066] More preferably, a crossbeam connecting seat 2-3, which connects to the roof crossbeam, is welded to the main pipe of the side frame. This achieves a stable connection with the roof crossbeam and enhances the structural strength of the vehicle roof.

[0067] More preferably, at least one end of the main pipe of the side frame is provided with a frame mounting seat 2-4 for fixed connection with the frame. This ensures a firm connection between the side frame and the frame, improving the stability and safety of the entire vehicle. This design makes the vehicle structure more compact and robust, effectively improving the vehicle's durability and reliability.

[0068] More preferably, locating pins 2-5 are fixedly installed at the front and / or rear ends of the frame, and the main pipe of the side frame of the roof frame is inserted into the locating pins and fastened to the frame by fasteners. The main pipe of the side frame is inserted into the locating pins, and then the frame mounting base is fixedly connected to the frame by 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 base and the frame. The design of the locating pins 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.

[0069] More preferably, the A-pillar assembly 3 includes an A-pillar frame 3-1, a rearview window 3-2 mounted on the A-pillar frame, and an A-pillar guard plate 3-3. The door is hinged to the A-pillar frame, and when the door is closed, the inner edge of the door seals against the outer surface of the sub-tube. This design ensures a tight fit when the door is closed, improving the door's sealing performance and stability. The sub-tube, as the sealing surface of the door frame, forms an effective sealing barrier with the inner edge of the door, preventing the intrusion of external substances and improving the comfort of the cab and the overall sealing performance of the vehicle.

[0070] More preferably, the A-pillar frame is fixedly connected to the roof frame and the electric vehicle frame. Alternatively, the A-pillar frame can be equipped with connecting seats 3-4, which detachably connect the roof frame and the frame using fasteners. This technical solution achieves flexible structural changes for the vehicle model through the connection design of the A-pillar frame, roof frame, and electric vehicle frame. The fixed connection makes the A-pillar frame, roof frame, and frame a stable whole, suitable for the structural requirements of tricycles with doors; while the connecting seats and detachable connection of the roof frame and frame meet the usage scenarios of tricycles without doors. This design not only improves the versatility and adaptability of the vehicle model but also reduces production and maintenance costs, providing users with more choices and meeting different market demands, such as... Figure 1 and Figure 14 .

[0071] Further preferably, the upper edge of the door engages with the sub-tube of the side frame of the roof frame to achieve door positioning and sealing. This technical feature, through the engagement of the upper edge of the door with the sub-tube of the side frame of the roof frame, achieves the door positioning and sealing effect. This design ensures that the door can be accurately positioned in a predetermined location when closed, improving the stability and safety of the door. Simultaneously, the sealing design at the engagement point effectively prevents the intrusion of rainwater, dust, and other external substances, maintaining a clean and comfortable interior environment. This positioning and sealing technology enhances the overall performance of the vehicle and the passenger experience.

[0072] Please see Figures 6 to 10 Further preferably, the door 4 includes an outer protective panel 41 and an inner protective panel 42. The upper part of the outer and inner protective panels is provided with a window 43 for installing a windshield curtain or a windshield. The outer and inner protective panels are integrally blow-molded, and there is a hollow cavity between the outer and inner protective panels. A reinforcing frame 44 is provided on the inner side of the inner protective panel. The outer and inner protective panels are provided with door lock mounting grooves 41-1 or mounting holes. The reinforcing frame on the inner side of the door is hinged to the A-pillar frame of the A-pillar assembly.

[0073] The following is a detailed description of each technical feature:

[0074] 1. The outer and inner protective panels are blow-molded as a single piece:

[0075] Technical Benefits: Traditional car door panels are typically designed as separate units, requiring additional connectors and assembly processes. This not only increases manufacturing costs but can also lead to rattling and shaking due to loose or damaged connectors. This new invention utilizes integrated blow molding technology to form the outer and inner panels in a single process, eliminating connectors, simplifying the assembly process, and improving the overall reliability and durability of the door. Furthermore, the integrated blow molding technology also results in a smoother door surface and enhanced aesthetics.

[0076] 2. The space between the outer and inner protective plates is a hollow cavity:

[0077] Technical Benefits: The hollow cavity design effectively reduces the weight of the door while ensuring its strength. For electric vehicles, reducing door weight means reducing energy consumption and increasing driving range. Furthermore, the hollow cavity also provides some sound and heat insulation, enhancing driving comfort.

[0078] 3. The inner side of the inner liner is equipped with a reinforcing frame:

[0079] Technical Benefits: The reinforced frame design further enhances the strength and rigidity of the door, making it less prone to deformation under external forces. This is crucial for ensuring the stability and safety of the door during long-term use. Simultaneously, the reinforced frame provides a robust mounting base for other door components, such as door locks and window frames.

[0080] 4. The outer and inner protective panels are provided with door lock mounting slots or mounting holes:

[0081] Technical Benefits: The design of the door lock mounting slot or hole allows for easy installation of door locks and other components onto the car door without additional processing or modification. This not only simplifies the door assembly process but also improves assembly efficiency and accuracy. Furthermore, a well-designed mounting slot or hole ensures the robustness and reliability of the door lock and other components, guaranteeing the safety of the car door during use.

[0082] To further enhance the effectiveness of this utility model, the following embodiments can also be adopted, as detailed below:

[0083] More preferably, the reinforcing frame is fixedly connected to the inner lining panel by fasteners 45. During manufacturing, the inner lining panel has pre-fabricated connecting posts or reinforcing connecting parts (solid bosses with a thickness greater than the inner lining panel thickness, etc.). The reinforcing frame is fixedly connected to the inner lining panel by fasteners, ensuring a firm connection between the reinforcing frame and the inner lining panel, and improving the overall structural strength and stability of the door. The fastener connection method is simple and reliable, easy to install and disassemble, and convenient for door maintenance and repair. At the same time, the fastener connection can effectively transmit external forces on the door, allowing the reinforcing frame to fully perform its supporting function and ensuring the safety and reliability of the door during long-term use.

[0084] Preferably, the added frame 44 includes at least one horizontal frame beam 44-1 and a vertical frame beam 44-2 for connecting the horizontal frame beam, wherein the vertical frame beam is located on the hinge side of the door. By providing at least one horizontal frame beam and a connecting vertical frame beam, a stable support structure is formed inside the door. The vertical frame beam, located on the hinge side of the door, effectively enhances the strength and rigidity of the door at the hinge, preventing deformation or damage during frequent opening and closing. The horizontal frame beam works in conjunction with the vertical frame beam to jointly bear various external forces on the door, ensuring the overall stability and durability of the door. This frame structure design is reasonable and can effectively improve the service life and safety of the door.

[0085] Preferably, a diagonal tie rod 44-3 is provided between the horizontal and vertical frame beams. The diagonal tie rod enhances the connection strength between the horizontal and vertical frame beams, further improving the overall rigidity and stability of the door. The diagonal tie rod can effectively resist the torsional deformation of the door under stress, ensuring the structural integrity of the door under complex stress environments.

[0086] Preferably, the inner side of the inner panel is integrally provided with a frame receiving groove 44-4 for accommodating the reinforcing frame. This integrally provided frame receiving groove provides a precise and stable mounting position for the reinforcing frame, ensuring a tight fit between the reinforcing frame and the inner panel, thus improving the overall structural strength and assembly accuracy of the door. This integrated design simplifies the assembly process, reduces the use of additional fasteners, and lowers manufacturing costs. Simultaneously, the frame receiving groove also provides some protection for the reinforcing frame, preventing damage from external impacts during use, thereby extending the service life of the door.

[0087] Preferably, one of the frame receiving slots extends from the door lock mounting slot or mounting hole towards the vertical frame beam. This technical feature brings significant ease of use and structural optimization. The frame receiving slot extending from the door lock mounting slot or mounting hole towards the vertical frame beam not only enhances the structural strength of this area but also provides a concealed and secure path for the door lock lever or cable. This design allows the driver to open the door without having to reverse their hand, greatly improving ease of operation and comfort. At the same time, the concealed installation of the lever or cable maintains the neatness and aesthetics of the door interior, enhancing the overall design. This technical feature embodies a perfect combination of human-centered design and structural functionality.

[0088] For preferred options, please refer to [link / reference]. Figure 10 The door lock mounting groove is equipped with a door lock mounting plate 41-2 that is integrated with the inner and outer protective plates. This ensures the accuracy and firmness of the door lock installation position, effectively preventing safety hazards caused by loosening or displacement of the door lock during use. This integrated design not only improves the assembly efficiency of the vehicle door but also reduces the use of additional fasteners, lowering manufacturing costs. At the same time, the one-piece molded door lock mounting plate enhances the overall aesthetics of the vehicle door, improving product quality and market competitiveness.

[0089] A sealing component 46 is provided between the door and the sub-pipe. Firstly, regarding the structural design of the main and sub-pipes, this invention adopts a hollow, integrated design. The main pipe has a larger diameter than the sub-pipe, and after bending, the main pipe is located on top, and the sub-pipe on the bottom. This makes the door frame more stable when bearing the force of opening and closing the door, effectively reducing deformation and twisting of the door frame. Simultaneously, the sub-pipe, as the door frame sealing surface, has a smaller diameter, allowing the door to fit more tightly against the sub-pipe surface when closed, thus greatly improving the sealing effect. This design not only enhances the strength and stability of the door frame but also effectively prevents the intrusion of rainwater, dust, and other external substances, ensuring the cleanliness and comfort of the cab.

[0090] Secondly, this invention also makes significant innovations in terms of the ease of installation of the sealing component. The sealing component is cleverly positioned between the door and the sub-pipe, ensuring both a good seal and making installation exceptionally simple and quick. Because the contact surfaces between the sealing component and the door and sub-pipe have been carefully designed and processed, installation requires no complicated tools or steps; simply place the sealing component in the designated position. This design not only improves production efficiency but also reduces production costs, providing strong support for the large-scale production and application of electric vehicles.

[0091] For preferred options, please refer to [link / reference]. Figure 12The inner protective panel has a sealing member 46 installed on its edge. The sealing member is a D-shaped sealing strip. In this embodiment, the sealing member is placed on the side of the door, so that when the door is closed, the sealing member can directly abut against the outer side of the door frame to achieve a seamless seal. The D-shaped cross-section enhances the fit, which not only meets the sealing requirements but also simplifies the installation process, providing a more efficient and reliable solution for sealing electric vehicle doors.

[0092] Example 2, please refer to Figure 15 In this embodiment, the sealing component 46 is installed on the side frame 2-10, including an open-type clamping sleeve 46-1 and a sealing strip 46-2 integral with the clamping sleeve. The opening of the clamping sleeve is smaller than the radius of the secondary tube, and the sealing strip abuts against the inner edge of the door to achieve a seal. More preferably, the sealing strip has a hollow structure.

[0093] The open-type locking sleeve 46-1 design allows the sealing component to be easily snapped into the secondary pipe without complicated installation steps or additional fixing devices. Its opening is smaller than the radius of the secondary pipe, ensuring a secure installation of the sealing component and effectively preventing it from falling off or shifting during use.

[0094] Furthermore, the hollow design of the 46-2 sealing strip not only reduces the overall weight of the sealing component but also improves its sealing performance. The hollow structure allows the sealing strip to deform more easily under the pressure of the door closing, thus fitting more tightly against the inner edge of the door. This tight fit effectively prevents the intrusion of rainwater, dust, and other external substances, further enhancing the sealing and comfort of the cab. At the same time, the hollow sealing strip also has good elasticity and durability, maintaining its sealing performance for a long time and extending the service life of the sealing component.

[0095] Preferably, the opening direction of the sealing strip clamping sleeve forms an angle of 15-45° with the vertical center of the clamping sleeve. Because the opening direction forms a certain angle with the vertical center, the sealing strip 46-2 will contact the inner edge of the door before installation. This design allows the sealing strip to be in a pre-compressed state before the door is closed, which is beneficial for the sealing strip to deform better to adapt to the shape of the door when it is closed.

[0096] This pre-contact and pre-compression design not only enhances the fit between the weatherstripping and the inner edge of the door, but also improves the sealing effect. It ensures that even when the door closes quickly or there is a slight deviation, the weatherstripping adheres quickly and tightly, effectively preventing the intrusion of rainwater, dust, and other external substances. At the same time, this design also extends the lifespan of the weatherstripping and reduces wear caused by frequent deformation.

[0097] Meanwhile, because the opening direction forms a certain angle with the vertical center, the fixing of the clamping sleeve inside the secondary pipe is more secure and less likely to fall off due to vibration or external force, thus ensuring the long-term stability of the sealing component.

[0098] Example 3, please refer to Figure 16 In this embodiment, the canopy frame includes at least two side frames 2-10, and a canopy beam 2-11 for installing windproof components is connected to the two side frames. The side frames include a hollow main pipe 2-12 and a hollow secondary pipe 2-13, which are integral structures. The main pipe and the secondary pipe have the same geometric shape and dimensions. The main pipe and the secondary pipe are respectively straight segments with an arc top and two sides that slope inward. The straight segments and the arc top are rounded, and the two straight segments of the main pipe and the secondary pipe are smoothly rounded.

[0099] 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. An electric tricycle, comprising a frame, a roof mounted on the frame, an A-pillar assembly mounted between the roof and the frame at a head side of the frame, and a door connected to the A-pillar assembly; characterized in that: the roof comprises a roof framework and a windshield member, the roof framework comprises at least two side frames, roof crossbeams for mounting the windshield member are connected to the two side frames, the side frame comprises a main pipe and a secondary pipe in hollow structure, the main pipe and the secondary pipe are in communication and are an integral structure; the main pipe and the secondary pipe are the same in geometric shape and geometric size; or the main pipe and the secondary pipe are the same in geometric shape, but the inner diameter of the main pipe is larger than that of the secondary pipe; the main pipe is located above, the secondary pipe is located below the main pipe, and the roof crossbeams are fixedly connected to the main pipe.

2. The electrically motorized tricycle of claim 1, wherein: A crossbeam connecting seat connected to the roof crossbeams is welded on the main pipe of the side frame.

3. The electrically motorized tricycle according to claim 1 or 2, characterized in that: At least one end of the main pipe of the side frame is provided with a frame fixing seat fixedly connected to the frame.

4. The electrically motorized tricycle of claim 1, wherein: A positioning pin is fixedly installed at the front end and / or rear end of the frame, the main pipe of the side frame of the roof framework is inserted into the positioning pin and is fastened to the frame by a fastener.

5. The electrically motorized tricycle of claim 1, wherein: The A-pillar assembly comprises an A-pillar frame and a rearview window and an A-pillar guard plate mounted on the A-pillar frame.

6. The electrically motorized tricycle of claim 5, wherein: The A-pillar frame is fixedly connected to the roof framework and the frame of the electric vehicle.

7. The electrically motorized tricycle of claim 5, wherein: The A-pillar frame is provided with a connecting seat, which is detachably connected to the roof framework and the frame by a fastener.

8. The electrically motorized tricycle of claim 1, wherein: The upper edge of the door cooperates with the secondary pipe of the side frame of the roof framework to limit and seal the door.

9. The electrically motorized tricycle of claim 1, wherein: The door comprises an outer guard plate and an inner guard plate, the upper part of the outer guard plate and the inner guard plate is provided with a window; the outer guard plate and the inner guard plate are integrally blow molded, and the space between the outer guard plate and the inner guard plate is hollow; a reinforcing framework is arranged on the inner side of the inner guard plate; the outer guard plate and the inner guard plate are provided with a door lock mounting groove or a mounting hole for mounting a door lock.

10. The electrically motorized tricycle of claim 9, wherein: The reinforcing framework on the inner side of the door is hingedly connected to the A-pillar frame of the A-pillar assembly.

Images