One-piece molded frames for electric bicycles and electric bicycles

Abstract

This application provides a one-piece molded frame for electric bicycles and an electric bicycle. The one-piece molded frame includes a windshield structure comprising a central windshield and side windshields. The windward surface of the central windshield is located in a concealed area, while the side windshields are located on either side of the central windshield and are situated in exposed areas. A head tube is formed into the central windshield and is located in the concealed area. The one-piece molded frame of this application eliminates the problem of dimensional deviations at welded parts, effectively ensuring the manufacturing precision of the one-piece frame, making the dimensions of each part of the frame more accurate, improving the fit of the overall assembly, enhancing the overall structural strength of the one-piece molded frame, and strengthening its load-bearing capacity and impact resistance. Furthermore, by dividing the one-piece molded frame into concealed and exposed areas, the desired appearance coverage and overall weight of the electric bicycle can be achieved.

Description

Technical Field

[0001] This utility model belongs to the field of vehicle frame technology. Specifically, this utility model relates to an integrally molded frame for electric bicycles and an electric bicycle. Background Technology

[0002] In the electric bicycle industry, the frame, as its core load-bearing component, plays a crucial role in the overall performance, safety, and lifespan of the vehicle.

[0003] In related technologies, electric bicycle frames are generally formed by welding tubing and sheet metal. However, this method not only increases the complexity of production but also makes it difficult to guarantee the frame's precision due to dimensional deviations at the welded areas, thus affecting the overall structural strength of the frame. Utility Model Content

[0004] One objective of this invention is to provide a new technical solution for an integrally molded frame for electric bicycles and for electric bicycles.

[0005] According to a first aspect of the present invention, a one-piece molded frame for an electric bicycle is provided, the one-piece molded frame having a hidden area and an exposed area, the one-piece molded frame comprising:

[0006] A windbreak structure, comprising a central windbreak component and side windbreak components, wherein the windward surface of the central windbreak component is located in the concealed area, and the side windbreak components are located on both sides of the central windbreak component and disposed in the exposed area;

[0007] A head tube, which is formed in the central windbreak and disposed in the concealed area.

[0008] Optionally, it also includes a connecting structure and a battery compartment frame, wherein the connecting structure is disposed in the exposed area, and the windproof structure and the battery compartment frame are respectively formed on the front and rear sides of the connecting structure;

[0009] The battery compartment frame is located in the hidden area.

[0010] Optionally, it also includes side strips formed on both sides of the connecting structure and disposed in the exposed area.

[0011] Optionally, the connection structure includes a foot pedal, with side strips formed on both sides of the foot pedal and disposed in the exposed area.

[0012] Optionally, the bottom of the foot pedal is provided with multiple reinforcing ribs at intervals.

[0013] Optionally, the extending direction of the side deflector intersects the extending direction of the side strip, and a mounting groove is formed between the side deflector and the side strip, the mounting groove being used to install a crash bar.

[0014] Optionally, the battery compartment frame includes a protective railing and at least one support member, the protective railing being spaced apart from the connecting structure, and the support member being formed between the connecting structure and the protective railing.

[0015] Optionally, it also includes a mounting bracket formed on the guardrail and forming a ring structure with the guardrail;

[0016] The mounting bracket is used to install the rear armrest and seat cushion lock.

[0017] Optionally, it also includes a rear swingarm mounting structure, which is formed at the rear of the connecting structure and is used to mount the rear swingarm.

[0018] Optionally, the one-piece molded frame is an aluminum alloy frame or a magnesium alloy frame.

[0019] According to a second aspect of the present invention, an electric bicycle is provided, the electric bicycle including a cover structure and the one-piece molded frame described in the first aspect;

[0020] The covering structure is connected to a hidden area of ​​the one-piece molded frame.

[0021] Optionally, the covering structure includes a headlamp trim and a panel structure, the headlamp trim being connected to the windward side of the central windbreak and the panel structure being connected to the top of the windbreak structure.

[0022] Optionally, the covering structure includes a front hood, side hoods, and taillight trim pieces, which surround the battery compartment frame of the one-piece molded vehicle frame.

[0023] One technical advantage of this utility model is:

[0024] This application provides a one-piece molded frame for electric bicycles. The one-piece molded frame includes a windshield structure comprising a central windshield and side windshields. The windward surface of the central windshield is located in a concealed area, while the side windshields are located on either side of the central windshield and are situated in exposed areas. A head tube is formed from the central windshield and is located in the concealed area. The one-piece molded frame eliminates the problem of dimensional deviations at welded joints, effectively ensuring manufacturing precision, making the dimensions of each part of the frame more accurate, improving the fit of the entire assembly, enhancing the overall structural strength of the one-piece molded frame, and strengthening its load-bearing capacity and impact resistance. Furthermore, by dividing the one-piece molded frame into concealed and exposed areas, the desired appearance coverage and overall weight of the electric bicycle can be achieved.

[0025] Other features and advantages of the present invention will become clear from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments of the present invention and, together with their description, serve to explain the principles of the present invention.

[0027] Figure 1 A schematic diagram of an integrally molded frame for an electric bicycle, provided as an embodiment of this utility model. Figure 1 ;

[0028] Figure 2 A schematic diagram of an integrally molded frame for an electric bicycle, provided as an embodiment of this utility model. Figure 2 ;

[0029] Figure 3 A partial schematic diagram of an integrally molded frame for an electric bicycle, provided as an embodiment of the present invention;

[0030] Figure 4 A top view of an integrally molded frame for an electric bicycle, provided as an embodiment of the present invention;

[0031] Figure 5 for Figure 4 Cross-sectional view of surface AA;

[0032] Figure 6 A schematic diagram of an electric bicycle provided as an embodiment of the present invention;

[0033] Figure 7 A connection diagram of an integrally molded frame for an electric bicycle, provided as an embodiment of the present invention;

[0034] Figure 8 An exploded view of an electric bicycle provided as an embodiment of this utility model.

[0035] in:

[0036] 100. One-piece molded frame; 1. Windshield structure; 11. Middle windshield; 12. Side windshield; 13. Mounting slot; 2. Head tube; 3. Connecting structure; 31. Foot pedals; 32. Reinforcing ribs; 4. Battery compartment frame; 41. Guardrail; 42. Support components; 5. Side strips; 6. Mounting bracket; 7. Rear swingarm mounting structure;

[0037] 200, anti-collision strip; 300, rear armrest; 400, seat lock; 500, rear swingarm;

[0038] 600. Cover structure; 601. Headlight trim; 602. Panel structure; 603. Front grille; 604. Side grille; 605. Taillight trim; 606. Seat cushion component. Detailed Implementation

[0039] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that, unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0040] The embodiments of this application will now be described in detail, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0041] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0042] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0043] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0044] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures.

[0045] Reference Figure 1 This application provides a one-piece molded frame for electric bicycles, the one-piece molded frame having a hidden area and an exposed area, the one-piece molded frame comprising:

[0046] The windbreak structure 1 includes a central windbreak 11 and side windbreaks 12. The windward surface of the central windbreak 11 is in a hidden area, and the side windbreaks 12 are located on both sides of the central windbreak 11 and are located in the exposed area.

[0047] Head tube 2 is formed in the middle windshield 11 and is located in the hidden area.

[0048] In the above embodiments, the unibody frame can be formed by unibody die casting, unibody casting, or unibody CNC machining. The unibody machining method avoids the welding process during the forming of the unibody frame, simplifies the process, and can significantly improve the production accuracy of the unibody frame and reduce production costs.

[0049] Meanwhile, the unibody frame eliminates the dimensional deviations associated with welded parts, effectively ensuring manufacturing precision and making the dimensions of each part of the frame more accurate, thus improving the overall fit of the assembly. Furthermore, it enhances the overall structural strength of the unibody frame, increasing its load-bearing capacity and impact resistance, extending the lifespan of the electric bicycle, and improving riding safety.

[0050] In the above embodiments, the unibody frame is divided into a hidden area and an exposed area. The hidden area is the region concealed inside the electric bicycle when assembled from the unibody frame. This hidden area can be used to house components that do not require high aesthetic appeal but need some protection or play a crucial role in structural stability. For example, internal connecting structures and pipelines can be located in the hidden area to avoid direct corrosion and impact from the external environment, thereby improving the reliability and lifespan of these components. The exposed area is the region directly exposed when the unibody frame is assembled into a complete electric bicycle. The exposed area showcases the aesthetic design of the frame, balancing functionality and aesthetics.

[0051] See Figure 1 By placing the windward side of the central windshield 11 in a concealed area, it is easier to install structures such as headlights on the windward side of the central windshield 11, improving the riding efficiency and stability of the electric bicycle. The side windshields 12 are located in exposed areas, providing significant wind protection and reducing the interference of oncoming wind on the rider, thus improving riding comfort. Furthermore, the exposed design allows for personalized designs or markings on the side windshields 12, increasing product recognition and aesthetics, and meeting consumers' diverse needs for product appearance.

[0052] See Figure 1 and Figure 4 The head tube 2 is a key component connecting the front fork and frame of an electric bicycle. Formed within the central windshield 11 and located in a concealed area, the head tube 2 enhances the overall connection strength and stability between the head tube and frame, making the connection between the fork and frame more robust and improving the precision and safety of vehicle handling. Simultaneously, the concealed area design prevents damage to the head tube 2 from external impacts, extending its lifespan and resulting in a cleaner and more aesthetically pleasing frame appearance.

[0053] In one specific embodiment, a low-pressure casting process is used to form a one-piece frame. Sand cores or foam materials are used to fill the cavities, and the one-piece frame is generated by one-piece casting, avoiding the welding of tubes and plates. This results in high precision and structural strength of the one-piece frame. By dividing the one-piece frame into hidden and exposed areas, the appearance coverage target and overall weight index of the electric bicycle can be achieved, so that the weight of plastic parts and other covering structures is less than 5.5% of the overall vehicle weight.

[0054] It is worth noting that, in this embodiment, the hidden area of ​​the electric bicycle refers to the area covered by the covering structure. This covering can be complete or mostly covered, exposing the connecting holes that are set externally. The mounting points such as the connecting holes can be ensured by machining, or the strength of the threaded holes can be ensured by installing steel wire thread sleeves. The exposed area is the area on the electric bicycle that can be directly exposed. By avoiding the setting of the covering structure, the overall appearance of the electric bicycle can be maintained, and the use of the covering structure can be saved.

[0055] In this embodiment, multiple core components, such as the windshield structure 1 and the head tube 2, are integrally die-cast with the frame. This avoids the dimensional deviations and assembly errors that may occur when assembling traditionally separate components after they are individually processed. Subsequently, only a few decorative parts need to be installed on the integrally formed frame to form a fully enclosed electric bicycle, which greatly simplifies the assembly process, reduces the complexity of the assembly technology, and is beneficial to the assembly and maintenance of electric bicycles.

[0056] Furthermore, the one-piece molded frame provided in this application serves as a support frame platform for electric bicycles. In hidden areas where a covering structure is required, different colors and shapes of covering structures can be used to meet the different appearance design requirements of electric bicycles. Moreover, the covering structure is easy to replace, so as to quickly realize the replacement of local appearance and improve assembly efficiency.

[0057] In some embodiments, see Figure 1 and Figure 2 The one-piece molded frame also includes a connecting structure 3 and a battery compartment frame 4. The connecting structure 3 is located in the exposed area, and the windshield structure 1 and the battery compartment frame 4 are respectively formed on the front and rear sides of the connecting structure 3.

[0058] The battery compartment frame 4 is located in a hidden area.

[0059] In the above embodiment, the connecting structure 3 is located in the exposed area, which facilitates full utilization of the space on both the front and rear sides of the connecting structure 3, making the frame structure more compact and reasonable. The windshield structure 1 and the battery compartment frame 4 are located on the front and rear sides of the connecting structure 3, respectively, which improves the utilization rate of the internal space of the frame and provides more space for the installation and layout of other components.

[0060] See Figure 1 The windshield structure 1 and the battery compartment frame 4 are integrally formed with the connecting structure 3, creating multiple stress support points and enhancing the overall stability of the frame. During electric bicycle operation, this allows for better resistance to various external forces, reducing frame deformation and swaying, and improving riding safety and comfort.

[0061] Furthermore, placing the battery compartment frame 4 in a hidden area effectively protects the battery installed within. This hidden area prevents damage from external impacts, scratches, and rainwater, reducing the risk of battery damage and extending battery life. Simultaneously, the hidden design also prevents battery theft, improving vehicle security.

[0062] In some embodiments, see Figure 1 The one-piece molded frame also includes side strips 5, which are formed on both sides of the connecting structure 3 and are located in the exposed area.

[0063] In the above embodiment, the side strips 5 are integrally formed with the connecting structure 3 and located on both sides of it. The side strips 5 can provide lateral protection and support for the connecting structure 3. During the operation of the electric bicycle, the frame will be subjected to various dynamic loads such as bumps and lateral forces during cornering. The side strips 5 can disperse these forces acting on the connecting structure 3, reducing the risk of deformation or damage to the connecting structure 3 due to excessive local stress, thereby improving the stability and reliability of the entire frame connection and extending the service life of the frame.

[0064] Moreover, the well-designed side strip 5 echoes the lines of other parts of the frame, enhancing the overall aesthetics of the vehicle and meeting consumers' personalized needs for product appearance.

[0065] In some embodiments, see Figure 1 The connecting structure 3 includes a foot pedal 31, with side strips 5 formed on both sides of the foot pedal 31 and disposed in the exposed area.

[0066] In the above embodiment, the pedal 31 is formed on the connecting structure 3, achieving a high degree of integration of the electric bicycle's functions. In traditional designs, the pedal is often a component independently mounted on the frame, while in this embodiment, the pedal is integrated into the connecting structure, reducing additional mounting components and connection points, and simplifying the overall frame structure. This not only reduces the complexity and cost of manufacturing but also reduces quality problems such as loosening and wear that may arise from connecting multiple components, improving the reliability and stability of the frame.

[0067] In electric bicycles, the pedals 31 are crucial for the human body's force application during riding, bearing significant pedaling force. Integrating the pedals 31 into the connecting structure 3 allows the pedaling force to be transmitted more directly and effectively to key components of the frame, such as the head tube and rear swingarm. This improves the frame's stress efficiency, resulting in smoother power transmission and a better riding experience. Simultaneously, it enhances the frame's structural strength under pedaling force, reducing the risk of deformation and damage.

[0068] See Figure 1The side strips 5 form a reinforcing structure on both sides of the pedal 31, which can significantly improve the bending and torsional resistance of the pedal 31 itself. During riding, the side strips 5 can also distribute the force on the pedal 31, reducing the deformation or breakage of the pedal 31 due to excessive local stress, and extending the service life of the pedal.

[0069] In some embodiments, see Figure 4 and Figure 5 The bottom of the foot pedal 31 is provided with multiple reinforcing ribs 32 at intervals.

[0070] In the above embodiment, during riding, the pedal 31 bears the downward vertical pedaling force applied by the rider, which causes the pedal 31 to bend and deform. Multiple reinforcing ribs 32 are spaced apart at the bottom of the pedal 31, effectively creating multiple support beams on the pedal 31. When the pedal is subjected to a bending moment, the reinforcing ribs 32 can share some of the bending stress, preventing the pedal 31 from bending excessively, improving the pedal 31's resistance to bending deformation, and ensuring that the pedal 31 maintains structural stability even under long-term use and large pedaling forces.

[0071] During cycling, the pedal 31 is subjected to vibrations from the road surface. The spacing of the reinforcing ribs 32 can also change the vibration characteristics of the pedal 31. When vibrations are transmitted to the pedal 31, the gaps between the reinforcing ribs 32 allow the pedal to undergo slight elastic deformation, which plays a certain role in cushioning and shock absorption, reducing the direct impact of vibrations on the rider's feet, improving cycling comfort, and reducing fatigue caused by long-term cycling.

[0072] In some embodiments, see Figure 1 and Figure 2 The extension direction of the side windshield 12 intersects the extension direction of the side strip 5, and a mounting groove 13 is formed between the side windshield 12 and the side strip 5. The mounting groove 13 is used to install the anti-collision strip 200.

[0073] In the above embodiment, the side windshield 12 and the side strip 5 extend in opposite directions, forming a structural frame with support in multiple directions on the frame. This allows the frame to be distributed to the side windshield 12 and the side strip 5 through the intersecting parts when subjected to external forces in different directions, such as lateral impact forces and torsional forces. This enhances the overall deformation resistance of the frame, improves the structural stability of the frame, effectively resists external impacts, and ensures riding safety.

[0074] Furthermore, the area between the side windshield 12 and the side strip 5 is a vulnerable point for frame wear and impact. Adding the anti-collision strip 200 to the mounting slot 13 allows it to absorb the impact force first when the frame is hit, acting as a buffer and absorbing energy. The anti-collision strip 200 is typically made of materials with a certain degree of elasticity and toughness, such as plastic, rubber, or silicone. These materials deform upon impact, dispersing and absorbing the impact energy, reducing direct damage to the frame, and protecting the structural integrity of the frame. The quick replacement of the anti-collision strip 200 also reduces wear on the frame itself, lowering maintenance costs. The mounting slot 13 provides a clear installation position for the anti-collision strip 200, ensuring accurate and secure installation on the frame. This guarantees consistent placement of the anti-collision strip 200 on the frame, improving installation efficiency and quality, and preventing inaccurate installation from affecting its protective effect.

[0075] In the above embodiments, the shape and size of the mounting groove 13 can be designed according to the structure of the anti-collision strip 200, so that the anti-collision strip 200 and the mounting groove 13 form a good fit, such as an interference fit or a snap-fit ​​connection. This tight connection can enhance the reliability of the connection between the anti-collision strip 200 and the frame, prevent the anti-collision strip 200 from falling off during riding, and ensure that it can always play a protective role.

[0076] In some embodiments, see Figure 3 The battery compartment frame 4 includes a protective railing 41 and at least one support member 42. The protective railing 41 is spaced on the connecting structure 3, and the support member 42 is formed between the connecting structure 3 and the protective railing 41.

[0077] In the above embodiment, the protective railing 41 and the supporting component 42 are integrated into the battery compartment frame 4. The protective railing 41 mainly serves to protect the battery, while the supporting component 42 provides structural support. This integrated design simplifies the overall structure of the battery compartment, reduces the number of components and connection points, lowers the complexity and cost of manufacturing, and also improves the integrity and stability of the battery compartment structure.

[0078] See Figure 3 The protective barrier 41 and the support component 42 work together to improve the performance of the battery compartment. The protective barrier 41 can block direct impacts from external objects to the battery, protecting it from damage; the support component 42 provides solid support for the battery compartment, ensuring that the battery compartment can withstand various dynamic loads, such as vibration and bumps, during vehicle operation, maintaining the stability of the battery structure, preventing the battery from being squeezed or damaged due to deformation of the battery compartment, and extending the battery's service life.

[0079] Furthermore, the guardrails 41 are spaced out, which greatly reduces their weight while ensuring protective function. The lighter weight helps improve the electric bicycle's range and handling performance. In addition, the spaced guardrails 41 form heat dissipation channels. During battery operation, heat is generated, and good ventilation and heat dissipation can accelerate heat dissipation, preventing the battery from being affected by excessive temperature, thus protecting its performance and lifespan.

[0080] See Figure 3 The support components 42, such as support columns or support frames, connect the connecting structure 3 and the guardrail 41 to form a stable support system. The support components 42 are used to support and fix the guardrail 41 and support the seat mounting structure above, bear the force transmitted by the rider, effectively disperse and transmit the force acting on the battery compartment, and enhance the connection strength and overall stability between the battery compartment and the connecting structure 3.

[0081] In some embodiments, see Figure 3 and Figure 7 The one-piece molded frame also includes a mounting bracket 6, which is formed on the guardrail 41 and forms a ring structure with the guardrail 41.

[0082] Mounting bracket 6 is used to install the rear armrest 300 and seat lock 400.

[0083] In the above embodiments, a mounting bracket 6 is added to the one-piece molded frame, expanding the frame's functionality. For example, the mounting bracket 6 provides a unified, detachable mounting platform for components such as rear grab handles 300 and saddle locks 400 of different types and specifications. This allows the same frame to meet the needs of different user groups by replacing different styles of rear grab handles 300 or adapting to different models of saddle locks 400. For instance, it provides personalized rear grab handle designs for users of different heights and riding habits, or adapts to different brands and types of saddle locks, improving the frame's versatility and market adaptability.

[0084] See Figure 3 The mounting bracket 6 and the guardrail 41 are integrally molded and form a ring structure. The ring structure has high structural strength and stability, and can better withstand forces from different directions, such as the rider's gripping force on the rear grab handle 300 and the force generated by the seat lock 400 during locking and unlocking. The ring structure can effectively disperse stress, avoid local stress concentration, reduce the risk of deformation or damage to the mounting bracket 6 and guardrail 41, and extend the service life of the frame.

[0085] In some embodiments, see Figure 2 and Figure 8 The one-piece frame also includes a rear swingarm mounting structure 7, which is formed at the rear of the connecting structure 3 and is used to mount the rear swingarm 500.

[0086] In the above embodiments, the rear swingarm mounting structure 7 is integrated into the one-piece molded frame, achieving further integration of frame functions. In traditional designs, the rear swingarm mounting part needs to be fixed to the frame through additional welding or bolt connections. This not only increases the number of parts and assembly steps, but may also affect the overall strength and stability of the frame due to the large number of connection points. However, the rear swingarm mounting structure 7 integrally molded on the one-piece molded frame in this application embodiment avoids these problems, making the frame structure simpler and more compact, reducing potential stress concentration points, and improving the overall performance and reliability of the frame.

[0087] See Figure 2 The rear swingarm mounting structure 7 is located at the rear of the connecting structure 3. Since the connecting structure 3 is usually a key part of the frame that bears a large load, the connection between the rear swingarm mounting structure 7 and the connecting structure 3 enables the driving force, braking force, road impact force and other forces borne by the rear swingarm 500 from the rear wheel to be more effectively transmitted to the main stress parts of the frame. This optimizes the force transmission path, reduces force loss and local stress concentration, improves the stress efficiency and fatigue resistance of the frame, and ensures the stability and safety of the vehicle during operation.

[0088] In some embodiments, the unibody frame is an aluminum alloy frame or a magnesium alloy frame.

[0089] In the above embodiments, the one-piece molding process makes the frame a continuous and complete structure, eliminating the weakness points that may exist in traditional welded frames due to weld seams. Aluminum or magnesium alloys themselves have high strength, and the one-piece molding process fully utilizes the material's mechanical properties, providing the electric bicycle with excellent load-bearing capacity. This ensures the frame can withstand various complex loads during riding, guaranteeing riding safety.

[0090] In one embodiment, the unibody frame is an aluminum alloy frame. Aluminum alloy has a relatively low density, allowing the frame to significantly reduce weight while maintaining sufficient strength. For vehicles such as electric bicycles, a lightweight frame helps improve range, reduce energy consumption, and also makes the vehicle more agile and easier to handle. This allows the unibody frame to weigh less than 9kg, achieving the goal of a fully enclosed frame while meeting the overall vehicle weight requirement of 55kg.

[0091] In one embodiment, the one-piece frame is a magnesium alloy frame. Magnesium alloy has a lower density than aluminum alloy. Using magnesium alloy to manufacture the frame can further reduce the weight of the vehicle. The lighter frame weight can significantly improve the vehicle's acceleration performance, climbing ability and handling agility, bringing riders a more agile and comfortable riding experience.

[0092] See Figures 6 to 8 This application embodiment also provides an electric bicycle, which includes a cover structure 600 and the aforementioned integrally molded frame 100;

[0093] The cover structure 600 is connected to the hidden area of ​​the one-piece molded frame 100.

[0094] In the above embodiments, the cover structure 600 is combined with the one-piece molded frame 100 to achieve an integrated design of the electric bicycle structure. The one-piece molded frame 100 has advantages such as high strength, high precision, and good overall integrity, providing a stable and reliable mounting base for the cover structure 600. The cover structure 600 further enriches the functionality and aesthetics of the electric bicycle. Together, they enable the electric bicycle to meet basic riding functions while possessing a more complete appearance and protective performance.

[0095] See Figure 8 The one-piece molded frame 100 can withstand various external mechanical loads, ensuring the stability and safety of the electric bicycle during operation. The cover structure 600 is connected to the frame and can distribute and transfer some of the external forces to a certain extent, reducing the stress on the frame. At the same time, it protects the key components inside the frame from damage by external factors, helping to extend the overall service life and reliability of the electric bicycle.

[0096] See Figure 6 and Figure 8 The 600-type cover structure is integrated into a hidden area of ​​the frame, resulting in a cleaner, more streamlined appearance. This avoids excessive exposed components and wiring, enhancing the overall aesthetics of the electric bicycle. This meets the high demands of modern consumers for product appearance and strengthens the product's market competitiveness.

[0097] In some embodiments, see Figure 8 The covering structure 600 includes a headlight trim 601 and a panel structure 602. The headlight trim 601 is connected to the windward side of the central windbreak 11, and the panel structure 602 is connected to the top of the windbreak structure 1.

[0098] In the above embodiments, the headlamp decorative component 601 not only serves a decorative function, enhancing the stylish appearance of the electric bicycle, but also provides some protection for the headlamp, preventing damage from collisions, scratches, etc. The panel structure 602 can be used to install various control buttons, displays, and other components, facilitating rider operation and viewing of vehicle information. It also provides some protection and decorative functions, meeting the needs of electric bicycles in different usage scenarios.

[0099] See Figure 8By connecting the headlight trim 601 to the windward side of the central windshield 11, the headlight trim 601 and the windshield can form a relatively smooth overall shape, reducing air resistance encountered by the vehicle during operation. This helps to improve the speed and range of the electric bicycle and reduce energy consumption.

[0100] The panel structure 602 is connected to the top of the windshield structure 1, allowing the rider to easily operate the various buttons on the panel and view the display information while riding. This reduces the distance the rider needs to bend down or reach out to operate, improving ease of operation and safety. The relatively high position of the top of the windshield structure 1 also provides some protection for the panel structure 602, reducing the risk of damage to the panel.

[0101] In some embodiments, see Figure 6 and Figure 8 The covering structure 600 includes a front shield 603, side shields 604 and taillight trim 605, which are mounted on the battery compartment frame 4 of the integrally molded frame 100.

[0102] In the above embodiment, the cover structure 600 includes a seat cushion component 606, which is connected to the top of the battery compartment frame 4. The front shield 603, side shields 604, taillight trim 605, and seat cushion component 606 of the cover structure 600 each perform different functions but cooperate with each other to provide comprehensive protection and decoration for the electric bicycle.

[0103] See Figure 8 The front cover 603, side covers 604, and taillight trim 605 surrounding the battery compartment frame 4 form a relatively enclosed protective space, preventing damage to the battery inside the battery compartment from external impacts, scratches, rainwater erosion, etc. This can effectively extend the battery's lifespan and reduce repair and replacement costs caused by battery damage.

[0104] Although specific embodiments of the present invention have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Those skilled in the art should understand that modifications can be made to the above embodiments without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. An integrally formed frame for an electric bicycle, characterized by, The unibody frame has a hidden area and an exposed area, and the unibody frame includes: A windbreak structure (1) includes a central windbreak component (11) and side windbreak components (12). The windward surface of the central windbreak component (11) is located in the hidden area, and the side windbreak components (12) are located on both sides of the central windbreak component (11) and are disposed in the exposed area. Head tube (2), which is formed on the central windshield (11) and disposed in the hidden area.

2. The one-piece frame of claim 1, wherein It also includes a connecting structure (3) and a battery compartment frame (4), wherein the connecting structure (3) is disposed in the exposed area, and the windproof structure (1) and the battery compartment frame (4) are respectively formed on the front and rear sides of the connecting structure (3); The battery compartment frame (4) is located in the hidden area.

3. The unitized frame of claim 2, wherein, It also includes side strips (5), which are formed on both sides of the connecting structure (3) and disposed in the exposed area.

4. The unitized frame of claim 2, wherein, The connecting structure (3) includes a foot pedal (31), on both sides of which side strips (5) are formed and disposed in the exposed area.

5. The unitized frame of claim 4, wherein, The bottom of the foot pedal (31) is provided with multiple reinforcing ribs (32) spaced apart.

6. The unitized frame of claim 4 wherein, The extension direction of the side deflector (12) intersects the extension direction of the side strip (5), and an installation groove (13) is formed between the side deflector (12) and the side strip (5). The installation groove (13) is used to install the anti-collision strip (200).

7. The unitized frame of claim 2 wherein, The battery compartment frame (4) includes a guardrail (41) and at least one support member (42), the guardrail (41) being spaced on the connecting structure (3), and the support member (42) being formed between the connecting structure (3) and the guardrail (41).

8. The unitized frame of claim 7, wherein, It also includes a mounting bracket (6), which is formed on the guardrail (41) and forms a ring structure with the guardrail (41); The mounting bracket (6) is used to install the rear armrest (300) and the seat lock (400).

9. The one-piece molded frame according to claim 2, characterized in that, It also includes a rear swingarm mounting structure (7), which is formed at the rear of the connecting structure (3) and is used to mount the rear swingarm (500).

10. The one-piece molded frame according to claim 1, characterized in that, The one-piece molded frame is an aluminum alloy frame or a magnesium alloy frame.

11. An electric bicycle, characterized in that, Includes a cover structure (600) and a one-piece molded frame (100) as described in any one of claims 1-10; The cover structure (600) is connected to the hidden area of ​​the one-piece frame (100).

12. The electric bicycle according to claim 11, characterized in that, The covering structure (600) includes a headlamp trim (601) and a panel structure (602), the headlamp trim (601) being connected to the windward side of the central windbreak (11), and the panel structure (602) being connected to the top of the windbreak structure (1).

13. The electric bicycle according to claim 11, characterized in that, The covering structure (600) includes a front shield (603), side shields (604) and taillight trim (605), which surround the battery compartment frame (4) of the one-piece frame (100).

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