Integrated frame structure for electric power-assisted bicycle

By using high-strength, lightweight materials and a built-in frame design, the complex connection and weight issues of electric-assist bicycle frames have been solved, achieving lightweight and stable frames, and improving the riding experience and battery life.

CN223494680UActive Publication Date: 2025-10-31UNIVERSE ELECTRIC TECH (HANGZHOU) CO LTD
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Patent Information

Application Number
CN202422830441.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-20
Publication Date
2025-10-31
Estimated Expiration
2034-11-20

AI Technical Summary

Technical Problem

Existing electric-assist bicycle frames suffer from problems such as complex external connections, exposed wiring harnesses, and heavy weight.

Method used

The frame body is made of high-strength, lightweight materials, with the power motor and battery integrated inside the frame. The wiring is also built into the frame. Combined with a streamlined structure and shock absorption devices, it enhances structural stability and comfort.

Benefits of technology

It achieves lightweight frame, improves riding stability and handling, enhances battery protection and safety, provides excellent range and fast charging capabilities, and improves riding experience and integration.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides an integrated frame structure for an electric power-assisted bicycle, which comprises a frame body, and the frame body comprises a frame main body made of a high-strength light-weight material; the power motor is completely integrated in the frame; the storage battery supports quick charging; the outer end of the power motor is provided with two motor frames, the lower end of each motor frame is provided with a positioning seat, the inner end of each positioning seat is provided with a damping ring, the inner end of each damping ring is provided with a positioning screw, the upper ends of the two motor frames are respectively provided with a damping plate, and the outer ends of the damping plates are provided with reinforcing ribs. The reinforcing ribs are fixed to the inner end and the outer end of the frame body, the outer end of the storage battery is connected with a charging port through wires, the storage battery and the power motor are connected through wires, and the wires are arranged at the inner end of the frame body. The problems that in the design of a moped frame, external connection is complex, wire harnesses are exposed, and the weight is large are solved.
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Description

Technical Field

[0001] This utility model relates to the field of electric bicycle frame technology, and more specifically, to an integrated frame structure for electric bicycles. Background Technology

[0002] The frame of an e-bike is the skeleton of the entire vehicle. It not only supports the rider's weight but also carries key components such as the battery and motor. The frame design directly affects the vehicle's stability, handling, and riding comfort. An e-bike frame typically consists of the following main parts: 1. Top tube: The main supporting component connecting the fork and seatpost, bearing the rider's weight and the impact force from the fork; 2. Down tube: The lateral support component connecting the fork and seatpost, increasing the frame's stability and rigidity; 3. Fork: The component connecting the frame to the front wheel, requiring sufficient rigidity and durability; 4. Seatpost: The tubular component connecting the frame to the seat, bearing the force from the rider's sitting posture; 5. Rear swingarm: The component connecting the frame to the rear wheel, supporting the rear wheel and transmitting power; 6. Center stand: Provides additional support to the frame, improving stability; 7. Side stand: Used to support the frame when parked; 8. Rear rack: Used for carrying items; 9. Handlebars: Control the vehicle's direction. The main functions of a bicycle frame include: support (bearing the rider's weight and external loads); load-bearing (supporting key components such as the battery and motor); connection (connecting various components into a whole); power transmission (transmitting the rider's power to the wheels); and stability (ensuring the vehicle's stability during riding). With the increasing popularity of electric-assist bicycles, the market has placed higher demands on their appearance design and riding experience.

[0003] In the existing technology, the existing electric-assist bicycle frames generally have problems such as complex external connections, exposed wiring harnesses, and heavy weight; therefore, we have made improvements to this by proposing an integrated frame structure for electric-assist bicycles. Utility Model Content

[0004] The purpose of this utility model is to address the problems that exist in the current design of electric bicycle frames, such as complex external connections, exposed wiring harnesses, and heavy weight.

[0005] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0006] An integrated frame structure for electric-assist bicycles to improve the above-mentioned problems.

[0007] The application is as follows:

[0008] An integrated frame structure for electric-assist bicycles, comprising a frame body, the frame body including:

[0009] The main frame is made of high-strength, lightweight materials.

[0010] The motor is fully integrated inside the chassis;

[0011] Battery that supports fast charging;

[0012] The wiring is integrated into the frame.

[0013] As a preferred technical solution of this application, the outer end of the power motor is provided with two sets of motor frames, the lower end of each set of motor frames is provided with a positioning seat, the inner end of the positioning seat is provided with a shock-absorbing ring, and the inner end of the shock-absorbing ring is provided with a positioning screw.

[0014] As a preferred technical solution of this application, the upper ends of the two sets of motor frames are respectively provided with shock-absorbing plates, and the outer ends of the shock-absorbing plates are provided with reinforcing ribs, which are fixed to the inner and outer ends of the frame body.

[0015] As a preferred technical solution of this application, the outer end of the battery is connected to a charging port via a wiring harness, and the battery is connected to the power motor via a wiring harness, which is arranged at the inner end of the vehicle frame body.

[0016] As a preferred technical solution of this application, the battery compartment is located at the lower end of the vehicle frame, and the inner end of the battery compartment is movably connected to the battery.

[0017] As a preferred technical solution of this application, a control panel is provided at the outer end of the vehicle frame, and the control panel is connected to the power motor.

[0018] As a preferred technical solution in this application, the battery has a range of at least 130 kilometers.

[0019] As a preferred technical solution in this application, the fast charging time of the charging port does not exceed 1.5 hours.

[0020] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0021] In the scheme of this application:

[0022] The chassis body is manufactured using advanced composite materials and features a streamlined structure, which reduces weight and improves aerodynamic efficiency.

[0023] The mid-mounted drive motor is integrated, seamlessly embedding a high-torque, low-weight drive motor into the frame, lowering the overall center of gravity and enhancing driving stability and handling.

[0024] The fully integrated battery system, fast charging technology, and built-in design are not only aesthetically pleasing but also protect the battery from external environmental influences, ensuring long lifespan and safety.

[0025] Safe and convenient cable management, with dedicated internal cable routing channels to protect wires and other wiring harnesses, ensuring the safety and durability of power transmission;

[0026] Enhanced structure and vibration absorption: Through specially designed damping devices and reinforced ribs, the frame strength and riding comfort are improved while maintaining a lightweight design.

[0027] Intelligent control and monitoring, close integration of the control panel and power system, enable data visualization, enhance human-computer interaction, and optimize user experience;

[0028] With its excellent battery life and fast charging capabilities, it boasts a range of at least 130 kilometers and a fast charging time of less than 1.5 hours, greatly alleviating users' concerns about battery life.

[0029] Compatibility and personalization are key features, with designs compatible with high-end components on the market, such as Shimano DURAACE, ULTEGRA groupsets, and ZIPP454 wheelsets, offering a wide range of options. Attached Figure Description

[0030] Figure 1 A schematic diagram of the overall right-side structure of the integrated frame structure for an electric-assist bicycle provided in this application;

[0031] Figure 2 A schematic diagram of the overall left-side structure of the integrated frame structure for an electric-assist bicycle provided in this application;

[0032] Figure 3 A side sectional view of the motor compartment structure of the integrated frame structure for electric-assisted bicycles provided in this application;

[0033] Figure 4 The integrated frame structure for electric-assist bicycles provided in this application Figure 3 A magnified structural diagram of A in the middle;

[0034] Figure 5 A side sectional view of the motor frame structure of the integrated frame structure for electric-assisted bicycles provided in this application.

[0035] The image shows:

[0036] 1. Frame; 2. Battery compartment; 3. Battery; 4. Motor frame; 5. Positioning seat; 6. Shock absorber ring; 7. Positioning screw; 8. Wiring; 9. Motor compartment; 10. Drive motor; 11. Control panel; 12. Shock absorber plate; 13. Charging port. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0038] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely illustrates some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model. It should be noted that, unless otherwise specified, the embodiments, features, and technical solutions in the embodiments of this utility model can be combined with each other.

[0039] 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 further defined and explained in subsequent figures.

[0040] like Figures 1-5 As shown, this embodiment proposes an integrated frame structure for electric-assisted bicycles, including a frame body 1, which includes:

[0041] The main frame is made of high-strength, lightweight materials.

[0042] The power motor 10 is fully integrated inside the frame;

[0043] Battery 3, supports fast charging;

[0044] Cable routing 8 is built into the frame.

[0045] The main frame is made of high-strength, lightweight materials and designed with a streamlined structure to optimize aerodynamic performance.

[0046] The power motor 10 is a mid-mounted motor that is lightweight and powerful. It is embedded inside the frame to lower the center of gravity and improve stability.

[0047] The battery 3 is located inside the battery compartment 2, making it fully built-in, which is convenient for charging and does not affect the appearance of the frame 1, thus increasing the streamlined performance of the whole vehicle.

[0048] The interior of the chassis uses a dedicated wiring channel 8 to ensure the safe concealment of wiring 8 (electrical wires and other wiring harnesses) and avoid the influence of the external environment.

[0049] The outer end of the power motor 10 is provided with two sets of motor frames 4. The lower end of each set of motor frames 4 is provided with a positioning seat 5. The inner end of the positioning seat 5 is provided with a shock-absorbing ring 6. The inner end of the shock-absorbing ring 6 is provided with a positioning screw 7.

[0050] The shock-absorbing ring 6 facilitates the fixing of the motor frame 4 inside the motor compartment 9, and it can be stably fixed by the positioning screw 7.

[0051] The upper ends of the two sets of motor frames 4 are respectively provided with shock-absorbing plates 12, and the outer ends of the shock-absorbing plates 12 are provided with reinforcing ribs, which are fixed to the inner and outer ends of the frame body.

[0052] The damping plate 12 facilitates stable contact between the motor frame 4 and the motor housing 9, preventing vibration during vehicle operation and thus avoiding impact on the use of the power motor 10.

[0053] Reinforcing ribs are used to increase strength while ensuring lightweight properties.

[0054] The outer end of the battery 3 is connected to the charging port 13 via a cable 8. The battery 3 and the power motor 10 are connected via a cable 8, which is arranged at the inner end of the frame body.

[0055] The battery compartment 2 is located at the lower end of the vehicle frame 1, and the inner end of the battery compartment 2 is movably connected to the battery 3.

[0056] The outer end of the frame body 1 is provided with a control panel 11, which is connected to the power motor 10.

[0057] The Power Motor 10 uses one of the world's lightest mid-drive motors, such as VAPOR, which makes it easy to keep the overall weight of the vehicle under 12KG. This greatly improves the riding experience, reduces the need for users to rely on electric assist due to the excessive weight of the bicycle frame, improves vehicle handling, and reduces physical exertion.

[0058] The control panel 11 is connected to the drive motor 10 and the internal wiring 8, which allows relevant internal information to be displayed through the control panel 11, improving the overall integration of the vehicle. It can also be associated with the built-in wiring 8, making it easy for the built-in wiring 8 to be hidden inside the frame body 1. Furthermore, the control panel 11 allows for quick understanding of the status of the internal wiring 8.

[0059] Battery 3 has a range of at least 130 kilometers, and fast charging time for charging port 13 is no more than 1.5 hours.

[0060] The frame design makes the riding experience similar to that of a regular road bike without electric assist, and with a range of 130 kilometers and a fast charging time of 1.5 hours, it effectively solves users' range anxiety.

[0061] Furthermore, the frame 1 is compatible with the configurations of high-end road bikes on the market, such as Shimano DURAACE, ULTEGRA components and ZIPP454 wheelsets, providing consumers with more choices and meeting the needs of different users.

[0062] The frame 1 is designed with ergonomic principles in mind, optimizing the rider's posture and improving comfort during long-distance riding.

[0063] When this application is used: the fast-charging battery 3, connected by the built-in stable wiring 8, is combined with the existing lightweight power motor 10, which can facilitate the improvement of riding stability of the electric-assist bicycle and reduce the riding obstruction caused by the heavy frame.

[0064] Through specially designed shock absorption devices and reinforced ribs, the frame strength and riding comfort are improved while maintaining a lightweight design;

[0065] Furthermore, the body structure uses carbon fiber as the main material and incorporates advanced aerodynamic design to create an ultra-lightweight body, whose streamlined shape can significantly reduce the drag coefficient.

[0066] Equipped with a high-definition touchscreen control panel 11, it displays key information such as battery level, speed, and remaining range in real time, and allows adjustment of the assistance level to adapt to different road conditions and personal preferences.

[0067] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the utility model, are covered within the scope of the claims of the present utility model.

Claims

1. An integrated frame structure for an electric-assisted bicycle, comprising a frame body (1), characterized in that, The vehicle frame (1) includes: The main frame is made of high-strength, lightweight materials. The power motor (10) is fully integrated inside the frame; Battery (3) supports fast charging; The wiring (8) is integrated into the frame; The outer end of the power motor (10) is provided with two sets of motor frames (4), and the lower end of each set of motor frames (4) is provided with a positioning seat (5). The inner end of the positioning seat (5) is provided with a shock-absorbing ring (6), and the inner end of the shock-absorbing ring (6) is provided with a positioning screw (7). The upper ends of the two sets of motor frames (4) are respectively provided with shock-absorbing plates (12), and the outer ends of the shock-absorbing plates (12) are provided with reinforcing ribs, which are fixed to the inner and outer ends of the frame body; The outer end of the battery (3) is connected to a charging port (13) via a wiring (8). The battery (3) is connected to the power motor (10) via a wiring (8). The wiring (8) is arranged at the inner end of the frame body. The battery compartment (2) is located at the lower end of the vehicle frame (1), and the inner end of the battery compartment (2) is movably connected to the battery (3).

2. The integrated frame structure for an electric-assisted bicycle according to claim 1, characterized in that, The outer end of the vehicle frame (1) is provided with a control panel (11), which is connected to the power motor (10).

3. The integrated frame structure for an electric-assisted bicycle according to claim 2, characterized in that, The battery (3) has a range of at least 130 kilometers.

4. The integrated frame structure for an electric-assisted bicycle according to claim 3, characterized in that, The fast charging time of the charging port (13) is no more than 1.5 hours.