Self-generating generator mounting structure of electric power-assisted bicycle

By installing a generator module inside the bottom bracket of a bicycle frame and securing it with threaded connections and a cover plate, the problems of complex installation and inconvenient maintenance of traditional generators are solved, thus simplifying operation and improving performance.

CN224184436UActive Publication Date: 2026-05-01SUZHOU JINQIUYI TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SUZHOU JINQIUYI TECH CO LTD
Filing Date
2025-05-22
Publication Date
2026-05-01

AI Technical Summary

Technical Problem

Traditional generators are complex to install on bicycles, inconvenient to maintain, and susceptible to external influences, affecting their lifespan and user experience.

Method used

The generator module is installed inside the bottom bracket of the chassis and fixed by threaded connection and cover plate, which simplifies the installation and maintenance process and makes use of the internal space of the bottom bracket to enhance structural stability and positioning accuracy.

Benefits of technology

It enables rapid disassembly and replacement of generators, improves maintenance efficiency, reduces repair time and costs, and enhances equipment durability and user experience.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a self-generating generator mounting structure of an electric power-assisted bicycle. The self-generating generator mounting structure comprises a frame, a generator module, a fixing plate, a first cover plate and a second cover plate, the frame comprises a bottom bracket, and the generator module is mounted in the bottom bracket; the fixing plate is arranged at one end of the generator module, the first cover plate is arranged on the outer side of the fixing plate and arranged at one end of the bottom bracket, and the second cover plate is arranged at the other end of the bottom bracket. Compared with the prior art, the five-way joint has the advantages that maintenance and replacement are convenient, the structure is compact, the internal space of the five-way joint is fully utilized, the use experience of a user can be remarkably improved, and inconvenience and troubles caused by equipment problems are reduced.
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Description

Technical Field

[0001] This utility model relates to bicycle structures, and in particular to a mounting structure for installing a generator in a bicycle frame. Background Technology

[0002] As bicycles become increasingly versatile, many are now equipped with generators to power lights, electronic displays, or other electronic components. Electric-assist bicycles, in particular, require an onboard generator to simultaneously power and charge the battery when it's depleted. Traditional generators are typically mounted on the wheels or other external components. While this method achieves power generation, it also has significant drawbacks.

[0003] First, the installation process of traditional generators is relatively complex. Because the generator needs to be integrated with other parts of the bicycle, such as wheels or frame, the installation often requires specialized tools and a high level of technical skill, making it difficult for ordinary users to complete on their own.

[0004] Secondly, the maintenance and replacement of traditional generators are also relatively inconvenient. Once a generator malfunctions, multiple related components need to be disassembled, making the repair process cumbersome and time-consuming. This not only increases maintenance costs but may also affect the user's normal operating experience.

[0005] In addition, traditional generators are installed on the outside of the wheels or frame, making them susceptible to external environmental influences, such as mud and sand intrusion or collision damage, which further reduces their reliability and service life.

[0006] Therefore, designing a generator mounting structure that is easy to install and maintain, while also providing good protection, has become a pressing issue in the current technical field. This paper proposes a self-generating generator mounting structure for electric-assist bicycles, which effectively improves upon the problems existing in traditional generators. Utility Model Content

[0007] To address this problem, this utility model proposes a self-generating generator installation structure for electric-assisted bicycles, including a frame, a generator module, a fixing plate, a first cover plate, and a second cover plate; the frame includes a bottom bracket, and the generator module is installed inside the bottom bracket; the fixing plate is disposed at one end of the generator module, and the first cover plate is disposed on the outside of the fixing plate, the first cover plate is disposed at one end of the bottom bracket, and the second cover plate is disposed at the other end of the bottom bracket.

[0008] Furthermore, the two ends of the bottom bracket are respectively provided with a first internal thread, and the first cover plate and the second cover plate are respectively provided with a first external thread. The first internal thread and the first external thread fix the first cover plate and the second cover plate to the two ends of the bottom bracket respectively.

[0009] Furthermore, one end of the generator module is provided with a second internal thread, and the fixing plate is provided with a second external thread. The fixing plate is installed at one end of the generator module through the second internal thread and the second external thread.

[0010] Furthermore, the fixing plate is provided with a fixing plate locking hole, and the first cover plate is provided with a cover plate locking hole. The locking device locks and fixes the fixing plate and the first cover plate through the cover plate locking hole and the fixing plate locking hole.

[0011] Furthermore, the inner edge of the first cover plate is provided with an alignment protrusion, and the outer edge of the fixing plate is provided with an alignment groove, with the alignment protrusion matching the alignment groove.

[0012] Furthermore, the center of the fixing plate, the first cover plate, and the second cover plate are all provided with through holes, through which the shaft of the generator module passes and connects to the crank.

[0013] Compared with existing technologies, the advantages of this utility model are:

[0014] (1) Easy to maintain and replace. The generator module is fixed to both ends of the bottom bracket by the cover plate. The generator can be quickly inspected or replaced by removing the cover plate without disassembling other complex parts, which greatly improves the efficiency of maintenance and replacement and reduces maintenance time and cost.

[0015] (2) The structure is compact and saves space. The generator module and the frame bottom bracket are integrated into one design, making full use of the internal space of the bottom bracket and not occupying the external space of the frame or wheels, making the overall structure of the bicycle more compact and the appearance simpler.

[0016] (3) Improve user experience. By optimizing installation and maintenance methods and enhancing equipment durability, this technical solution can significantly improve the user experience and reduce inconvenience and trouble caused by equipment problems.

[0017] This technical solution overcomes the shortcomings of traditional generators, such as complex installation, inconvenient maintenance, and insufficient reliability, through structural optimization. It simplifies operation while improving performance, thus meeting the high demands of modern bicycles for functionality and convenience. Attached Figure Description

[0018] Figure 1 This is an exploded view of the frame and generator fixing structure of this utility model.

[0019] Figure 2 This is a structural diagram of the vehicle frame of this utility model.

[0020] Figure 3 This is an exploded view of the generator module and fixing structure of this utility model.

[0021] Figure 4 This is an exploded view of the generator module and fixing structure of this utility model from another angle.

[0022] Figure 5 This is a schematic diagram of the crank structure for mounting the frame and generator module of this utility model.

[0023] Figure Labels

[0024] 1 frame

[0025] 10 Wutong

[0026] 11 First internal thread

[0027] 2 generator modules

[0028] 21 Second internal thread

[0029] 22-spindle

[0030] 3 fixed plates

[0031] 31 Second external thread

[0032] 32. Fixing plate locking holes

[0033] 33 Alignment Groove

[0034] 4 First cover plate

[0035] 41 First external thread

[0036] 42. Cover plate locking hole

[0037] 43 alignment protrusions

[0038] 5 Second cover plate

[0039] 51 First External Thread

[0040] 6-lock firmware

[0041] 7 through holes

[0042] 8 cranks Detailed Implementation

[0043] In the description of this utility model, 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", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component 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 utility model.

[0044] In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0045] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0046] Please refer to Figures 1-5 This utility model provides a self-generating generator mounting structure for an electric-assisted bicycle, including a frame 1, a generator module 2, a fixing plate 3, a first cover plate 4, and a second cover plate 5. The frame 1 includes a bottom bracket 10, and the generator module 2 is installed inside the bottom bracket 10; the fixing plate 3 is disposed at one end of the generator module 2, and the first cover plate 4 is disposed on the outside of the fixing plate 3. The first cover plate 4 is installed at one end of the bottom bracket 10, and the second cover plate 5 is installed at the other end of the bottom bracket 10.

[0047] To achieve a robust installation structure, the two ends of the bottom bracket 10 are respectively provided with a first internal thread 11 (see...). Figure 2 The first cover plate 4 and the second cover plate 5 are respectively provided with the first external threads 41 and 51. Through the threaded engagement of the first internal thread 11 with the first external threads 41 and 51, the first cover plate 4 and the second cover plate 5 can be firmly fixed to both ends of the bottom bracket 10, effectively avoiding loosening and ensuring the stability of the structure.

[0048] One end of the generator module 2 is provided with a second internal thread 21, and the fixing plate 3 is provided with a second external thread 31. Through the threaded engagement of the second internal thread 21 and the second external thread 31, the fixing plate 3 can be installed on one end of the generator module 2, so that the generator module 2 and the fixing plate 3 form a stable connection, which facilitates subsequent overall fixing.

[0049] The fixing plate 3 is provided with a fixing plate locking hole 32, and the first cover plate 4 is provided with a cover plate locking hole 42. The locking fastener 6 locks the fixing plate 3 and the first cover plate 4 together through the cover plate locking hole 42 and the fixing plate locking hole 32. This locking method further improves the connection strength between the fixing plate 3 and the first cover plate 4, and avoids loosening or displacement caused by vibration during use.

[0050] To achieve precise positioning, the inner edge of the first cover plate 4 is provided with an alignment protrusion 43, and the outer edge of the fixing plate is provided with an alignment groove 33. The alignment protrusion 43 and the alignment groove 33 match, which can achieve precise alignment between the fixing plate 3 and the first cover plate 4, simplifying the installation process and improving installation accuracy.

[0051] In addition, the center of the fixing plate 3, the first cover plate 4, and the second cover plate 5 are all provided with through holes 7, through which the rotating shaft 22 of the generator module 2 passes and connects to the crank 8. This design not only ensures the normal operation of the generator module, but also enables it to efficiently transfer the energy output by the generator to the crank, further improving the overall performance.

[0052] It should be noted that a chainring (not shown in the figure) can be installed on the outside of the second cover plate 5, similar to that of a regular bicycle. A chain (not shown in the figure) is installed on the chainring and connected to the rear wheel for power transmission. This power transmission structure is a common practice in the field and will not be elaborated upon here. The connection cable of the generator module 2 can be routed through the frame or exit through an opening near the bottom bracket 10, further connecting to devices requiring charging or power supply. Furthermore, the generator module 2 mentioned in this case also structurally possesses the rotor and stator, which are required components of a typical generator.

[0053] Through the above design, the electric-assisted bicycle self-generating generator installation structure provided by this utility model can effectively solve the problems of complex generator installation and difficult maintenance in traditional technology. At the same time, it has the advantages of simple installation, stable structure and accurate positioning, which significantly improves the user experience and the service life of the generator.

[0054] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An electrically assisted bicycle self-power generation generator mounting structure characterized by: Includes a chassis, generator module, mounting plate, first cover plate, and second cover plate; The frame includes a bottom bracket, and the generator module is installed inside the bottom bracket; The fixing plate is disposed at one end of the generator module, and a first cover plate is disposed on the outside of the fixing plate. The first cover plate is disposed at one end of the bottom bracket, and a second cover plate is disposed at the other end of the bottom bracket.

2. An electrically assisted bicycle self-generating power generator mounting structure according to claim 1, characterized in that: The two ends of the bottom bracket are respectively provided with a first internal thread, and the first cover plate and the second cover plate are respectively provided with a first external thread. The first cover plate and the second cover plate are respectively fixed at both ends of the bottom bracket by the first internal thread and the first external thread.

3. An electrically assisted bicycle self-generating power generator mounting structure according to claim 1, characterized in that: One end of the generator module is provided with a second internal thread, and the fixing plate is provided with a second external thread. The fixing plate is installed on one end of the generator module through the second internal thread and the second external thread.

4. An electrically assisted bicycle self-generating power generator mounting structure according to claim 1, characterized in that: The fixing plate is provided with a fixing plate locking hole, and the first cover plate is provided with a cover plate locking hole. The locking device locks and fixes the fixing plate and the first cover plate through the cover plate locking hole and the fixing plate locking hole.

5. An electrically assisted bicycle self-generating dynamo mounting structure according to claim 4, characterized in that: The inner edge of the first cover plate is provided with an alignment protrusion, and the outer edge of the fixing plate is provided with an alignment groove, wherein the alignment protrusion matches the alignment groove.

6. An electrically assisted bicycle self-generating power generator mounting structure according to claim 1, characterized in that: The fixing plate, the first cover plate and the second cover plate are all provided with through holes in their centers, and the rotating shaft of the generator module passes through the through holes and is connected to the crank.