A control device for electric-assisted bicycles

Abstract

This application provides a control device for an electric-assisted bicycle. Through a special connection between the ring controller and the frame and transmission structure, a design that facilitates easy replacement is achieved. The frame has a through hole along the axial direction, and the transmission structure passes through the ring controller and connects to the frame via the through hole. The transmission structure presses against the ring controller on the frame, ensuring a secure connection. In practical use, when the control device needs to be replaced, the ring controller can be quickly removed by sliding away from the transmission structure, simplifying the replacement process and avoiding the steps of traditional bolt fixing and disassembling the transmission system. The clamping structure design allows users to complete the replacement without complex tools, improving maintenance efficiency and reducing the requirements for operational precision.

Description

Technical Field

[0001] This application relates to the field of electric bicycles, and more particularly to a control device for an electric-assisted bicycle. Background Technology

[0002] With the increasing popularity of electric-assist bicycles, users have higher and higher requirements for their performance and ease of maintenance. Traditional electric-assist bicycle control devices mainly use mechanical or electronic components to regulate and control power output. However, in the design of these devices, more consideration is usually given to control precision and stability, while neglecting the maintenance and replacement needs of the control device. As the usage time increases, the aging or failure of the control device is inevitable, at which point the need for quick replacement of the control device becomes very important. The disassembly and assembly process of traditional control devices is often complicated, increasing maintenance costs and time, resulting in a poor user experience. In traditional electric-assist bicycle control devices, the controller is usually directly fixed between the frame and the drivetrain using fasteners such as bolts and nuts. Although this fixing method provides a stable connection, it is very inconvenient during replacement and maintenance. For example, the connection between the controller and the frame often uses a multi-layer fastening structure, including multiple bolts and support components. When replacing the controller, users need to loosen each fastener one by one and also partially disassemble the drivetrain to completely remove the old control device. This device has a complex structure and a cumbersome disassembly and assembly process, especially since the design of the drivetrain running through the controller and fixed to the frame further increases the difficulty of disassembly.

[0003] Therefore, it is necessary to provide an easy-to-replace control device for electric bicycles to solve the problem that the control devices for electric bicycles in the prior art are difficult to replace or have complicated replacement procedures. Utility Model Content

[0004] In view of this, it is necessary to provide an easily replaceable control device for electric-assisted bicycles to solve the above problems.

[0005] Embodiments of this application provide an electric-assisted bicycle control device, including a frame, a transmission structure rotatably connected to the frame, and a ring controller connected between the transmission structure and the frame.

[0006] The frame has a through hole along the axial direction, the transmission structure passes through the ring controller and is connected to the frame through the through hole, and the transmission structure presses against the ring controller on the frame;

[0007] Viewed along the axial direction, the annular controller is clamped between the transmission structure and the vehicle frame;

[0008] Along the length of the transmission structure, the transmission structure is slidably connected to the through hole, and the ring controller is able to slide away from the transmission structure.

[0009] In at least one embodiment of this application, the transmission structure includes:

[0010] The chain wheel is positioned away from the contact surface between the ring controller and the frame;

[0011] A central shaft structure, one end of which passes through the ring controller and the frame and is fixedly connected to the chain wheel;

[0012] In the axial direction, the annular controller is clamped between the central shaft structure and the vehicle frame.

[0013] In at least one embodiment of this application, when viewed along the axial direction, the annular controller has a fixing hole, and the central shaft structure passes through the fixing hole;

[0014] Along the length of the central shaft structure, the central shaft structure is slidably connected to the fixing hole. The direction of the ring controller toward the chain wheel is defined as the first direction. When the ring controller is disassembled, the transmission structure can slide out of the frame along the first direction, so that the ring controller slides away from the central shaft structure away from the first direction.

[0015] In at least one embodiment of this application, the central shaft structure includes an axially arranged bearing tube and a central shaft rotatably connected to the bearing tube;

[0016] Along the axial direction, the bearing tube passes through the fixing hole and the through hole and is fixed to the frame;

[0017] One end of the central shaft passes through the bearing tube along the axial direction and is fixedly connected to the chain wheel.

[0018] In at least one embodiment of this application, the electric-assisted bicycle control device further includes a connector;

[0019] Viewed along the axial direction, the connector is located on one side of the ring controller. One end of the connector is externally connected to the battery compartment and the motor, and the other end is electrically connected to the ring controller. The connector is electrically connected to both the battery compartment and the motor.

[0020] In at least one embodiment of this application, when viewed along the axial direction, the connector includes an input line and an output line extending in a direction perpendicular to the axial direction;

[0021] The input line is electrically connected to the battery compartment;

[0022] The output line is arranged in parallel with the input line and is electrically connected to the motor.

[0023] In at least one embodiment of this application, when viewed along the axial direction, the ring controller has heat dissipation fins on the side away from the connector.

[0024] In at least one embodiment of this application, when viewed along the axial direction, a locking portion is formed on the ring controller at the contact end with the frame and the bearing sleeve;

[0025] In the first direction, one end of the clamping part abuts against the bearing tube near the end of the chain wheel, and the other end abuts against the frame.

[0026] In at least one embodiment of this application, when viewed along the axial direction, the contact surface between the bearing tube and the locking part is a first abutting surface on the bearing tube;

[0027] In the first direction, the first abutting surface abuts against the locking part on the vehicle frame.

[0028] In at least one embodiment of this application, when viewed along the axial direction, the contact surface between the frame and the locking part on the frame is a second abutment surface;

[0029] In the first direction, the second abutting surface abuts against the locking part on the first abutting surface.

[0030] The electric-assist bicycle control device described above achieves easy replacement through a special connection method between the ring controller and the frame and transmission structure. Specifically, the frame has an axial through-hole, the transmission structure passes through the ring controller and connects to the frame via this through-hole, and the transmission structure presses against the ring controller on the frame, ensuring a stable connection between the controller and the frame during operation. In practical use, when the control device needs to be replaced, the ring controller can be quickly removed by sliding it away from the transmission structure, which greatly simplifies the replacement process and avoids the cumbersome bolt fixing and transmission system disassembly steps of traditional technology. Due to the clamping structure design between the ring controller, the transmission structure, and the frame, users can complete the replacement operation without using complex tools, which not only improves maintenance efficiency but also reduces the requirements for operational precision. Attached Figure Description

[0031] Figure 1 An exploded view of a control device for an electric-assisted bicycle;

[0032] Figure 2 An axial disassembled view of a control device for an electric-assisted bicycle;

[0033] Figure 3This is an axially disassembled view of a portion of the control device for an electric-assisted bicycle.

[0034] Figure 4 This is a front view of the central axis structure and an interface diagram AA of the front view;

[0035] Figure 5 This indicates the disassembly direction of the ring controller;

[0036] Figure 6 This is a partial view of the ring controller;

[0037] Figure 7 This is an axial view and a partial enlarged view of a control device for an electric-assisted bicycle.

[0038] Explanation of main component symbols

[0039] 1. Frame; 2. Transmission structure; 3. Ring controller; 4. Through hole; 5. Chain wheel; 6. Bottom bracket structure; 7. Fixing hole; 8. Bearing tube; 9. Bottom bracket; 10. Connector; 13. Input line; 14. Output line; 15. Heat dissipation fins; 16. Clamping part; 17. First abutting surface; 18. Second abutting surface; 100. An electric-assisted bicycle control device. Detailed Implementation

[0040] The embodiments of this application will now be described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0041] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or may also have an intervening component. When a component is considered to be "placed" on another component, it can be directly placed on the other component or may also have an intervening component. The terms "top," "bottom," "upper," "lower," "left," "right," "front," "back," and similar expressions used in this article are for illustrative purposes only.

[0042] The following is in conjunction with the appendix Figure 1 - Figure 7 The following describes some embodiments of this application in detail. Unless otherwise specified, the embodiments and features described below can be combined with each other.

[0043] An embodiment of this application provides an electric-assisted bicycle control device 100, including a frame 1, a transmission structure 2 rotatably connected to the frame 1, and an annular controller 3 connected between the transmission structure 2 and the frame 1. The frame 1 has a through hole 4 formed along the axial direction. The transmission structure 2 passes through the annular controller 3 and is connected to the frame 1 through the through hole 4. The transmission structure 2 presses against the annular controller 3 on the frame 1.

[0044] Viewed along the axial direction, the ring controller 3 is clamped between the transmission structure 2 and the frame 1;

[0045] Along the length of the transmission structure 2, the transmission structure 2 is slidably connected to the through hole 4, and the ring controller 3 is able to slide away from the transmission structure 2.

[0046] Specifically, the frame 1 has a through hole 4 along the axial direction. The transmission structure 2 passes through the ring controller 3 and is connected to the frame 1 through the through hole 4. The transmission structure 2 presses against the ring controller 3 on the frame 1 to ensure a secure connection. In actual use, when the control device needs to be replaced, the ring controller 3 can be quickly removed by sliding away from the transmission structure 2, simplifying the replacement process and avoiding the steps of traditional bolt fixing and disassembling the transmission system. The clamping structure design allows users to complete the replacement without complicated tools, improving maintenance efficiency and reducing the requirements for operational precision.

[0047] Furthermore, the transmission structure 2 includes:

[0048] The chain wheel 5 is positioned away from the contact surface between the ring controller 3 and the frame 1;

[0049] A central shaft structure 6, one end of which passes through the ring controller 3 and the frame 1 and is fixedly connected to the chain wheel 5;

[0050] In the axial direction, the ring controller 3 is clamped between the central shaft structure 6 and the frame 1.

[0051] Specifically, the transmission structure 2 includes a chain wheel 5 and a bottom bracket structure 6. The chain wheel 5 is designed to transmit power efficiently, while the bottom bracket structure 6 is responsible for stability and connection. One port of the bottom bracket structure 6 passes through the ring controller 3 and the frame 1 and is fixedly connected to the chain wheel 5. This connection method ensures that power transmission is not disturbed. Axially, the ring controller 3 ensures that there will be no displacement or loosening during operation by locking it to the bottom bracket structure 6 and the frame 1. The advantage of this design is that the stability of the transmission system is guaranteed even under high loads, reducing the failure rate during use. At the same time, the fixed design of the ring controller 3 makes disassembly and replacement easier.

[0052] Furthermore, when viewed along the axial direction, the annular controller 3 has a fixing hole 7, and the central shaft structure 6 passes through the fixing hole 7;

[0053] Along the length of the central shaft structure 6, the central shaft structure 6 is slidably connected to the fixing hole 7. The direction of the ring controller 3 toward the chain wheel 5 is defined as the first direction. When the ring controller 3 is disassembled, the transmission structure 2 can slide out of the frame 1 along the first direction, so that the ring controller 3 slides away from the central shaft structure 6 away from the first direction.

[0054] Specifically, the ring controller 3 design includes a fixing hole 7 through which the central shaft structure 6 passes and slides to connect with the ring controller 3. This design allows the ring controller 3 to slide out towards the chain wheel 5 during disassembly, enabling quick replacement. When the user needs to replace the ring controller 3, the transmission structure 2 can slide out in a predetermined direction, a process that does not require disassembling the entire system, simplifying the operation. The fixing hole 7 not only provides a stable connection but also allows the central shaft structure 6 to maintain appropriate degrees of freedom during operation, thereby reducing friction and wear. This design allows maintenance personnel to quickly replace the ring controller 3, improving maintenance efficiency and reducing downtime. This design is particularly suitable for applications requiring frequent maintenance, giving electric-assisted bicycles a significant advantage in long-term use.

[0055] Furthermore, the central shaft structure 6 includes an axially arranged bearing tube 8 and a central shaft 9 rotatably connected to the bearing tube 8;

[0056] Along the axial direction, the bearing tube 8 passes through the fixing hole 7 and the through hole 4 and is fixed to the frame 1;

[0057] One end of the central shaft 9 passes through the bearing tube 8 along the axial direction and is fixedly connected to the chain wheel 5.

[0058] Specifically, the central shaft structure 6 consists of a bearing tube 8 and a central shaft 9 rotatably connected to it. The bearing tube 8 is designed to pass through the fixing hole 7 and the through hole 4 and be fixed to the frame 1. Through this design, one end of the central shaft 9 passes through the bearing tube 8 and connects to the chain wheel 5, forming a stable power transmission path. The presence of the bearing tube 8 reduces frictional resistance, making the operation of the transmission structure 2 smoother. In addition, this structure strengthens the connection between the ring controller 3 and the transmission structure 2, ensuring the coordination between the components during operation. The design of the central shaft 9 not only provides good support but also makes the disassembly of the ring controller 3 more convenient.

[0059] Furthermore, the electric-assisted bicycle control device also includes a connector 10. Viewed along the axial direction, the connector 10 is located on one side of the ring controller 3. One end of the connector 10 is externally connected to the battery compartment and the motor, and the other end is electrically connected to the ring controller 3. The connector 10 is electrically connected to both the battery compartment and the motor.

[0060] Specifically, the electric-assist bicycle control unit also includes a connector 10, which connects the ring controller 3 to the battery compartment and the motor. This design allows the control unit to effectively achieve electric assist functionality. One end of the connector 10 connects to the battery compartment, and the other end is electrically connected to the ring controller 3, forming a complete power transmission path. This design simplifies the wiring of the electric system, making the connection more efficient and reliable.

[0061] Furthermore, viewed along the axial direction, the connector 10 includes an input line 13 and an output line 14 extending in a direction perpendicular to the axial direction. The input line 13 is electrically connected to the battery compartment. The output line 14 is arranged alongside the input line 13 and is electrically connected to the motor.

[0062] Specifically, connector 10 consists of an input line 13 and an output line 14. The input line 13 connects directly to the battery compartment, while the output line 14 connects to the motor. This design ensures that the electric-assist bicycle can transmit power quickly and stably during operation. The parallel arrangement of the input line 13 and the output line 14 effectively reduces electrical interference while providing good electrical isolation, ensuring safe power transmission.

[0063] Furthermore, when viewed along the axial direction, the ring controller 3 has heat dissipation fins 15 on the side away from the connector 10.

[0064] Specifically, the design of the ring controller 3 also includes heat dissipation fins 15. The main purpose of this design is to effectively dissipate the heat generated during prolonged operation of the electric-assisted bicycle. The addition of heat dissipation fins 15 not only improves the heat dissipation capacity of the ring controller 3 but also ensures that the controller will not overheat under high load conditions, avoiding electrical failures caused by overheating. This heat dissipation design allows the controller to operate at higher efficiency and extends its service life. At the same time, good heat dissipation performance also ensures the stability of the electric assist system and reduces performance degradation caused by temperature rise.

[0065] Furthermore, viewed along the axial direction, a locking portion 16 is formed on the ring controller 3 at the contact end with the frame 1 and the bearing sleeve. In the first direction, one end of the locking portion 16 abuts against the bearing tube 8 near the end of the sprocket 5, and the other end abuts against the frame 1.

[0066] Specifically, the contact end between the ring controller 3 and the frame 1 and bearing sleeve is designed with a locking part 16. This design enhances the tight connection between the ring controller 3 and the transmission structure 2. One end of the locking part 16 abuts against the bearing tube 8 near the sprocket 5, and the other end abuts against the frame 1. This double-locking structure provides strong support and stability, ensuring that the ring controller 3 will not shift under high loads. The advantage of this design is that even under conditions of violent movement, the entire system can still maintain stable operation, reducing the risk of failure due to loose components.

[0067] Furthermore, viewed along the axial direction, the contact surface between the bearing tube 8 and the clamping part 16 is a first abutting surface 17. In the first direction, the first abutting surface 17 abuts against the clamping part 16 onto the frame 1.

[0068] Specifically, the contact surface between the bearing tube 8 and the clamping part 16 is designed as a first abutting surface 17, which enhances the fixing effect of the clamping part 16. The setting of the first abutting surface 17 ensures that the connection between the ring controller 3 and the frame 1 is more stable during use, reducing the risk of displacement caused by movement.

[0069] Furthermore, viewed along the axial direction, on the frame 1, the contact surface between the frame 1 and the locking part 16 is the second abutting surface 18. In the first direction, the second abutting surface 18 abuts against the locking part 16 on the first abutting surface 17.

[0070] Specifically, the contact surface between the frame 1 and the clamping part 16 is designed as a second abutment surface 18. Through this structure, the second abutment surface 18 can be firmly abutted against the first abutment surface 17, forming a multi-layered fixing system. This design greatly enhances the stability of the control device under high loads and ensures that the connection between the components is not easily loosened.

[0071] The above description is merely an embodiment of this application. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of this application, but these improvements all fall within the protection scope of this application.

Claims

1. A control device for an electric-assisted bicycle, comprising a frame, a transmission structure rotatably connected to the frame, and a ring controller connected between the transmission structure and the frame, characterized in that: The frame has a through hole along the axial direction, the transmission structure passes through the ring controller and is connected to the frame through the through hole, and the transmission structure presses against the ring controller on the frame; Viewed along the axial direction, the annular controller is clamped between the transmission structure and the vehicle frame; Along the length of the transmission structure, the transmission structure is slidably connected to the through hole, and the ring controller is capable of sliding away from the transmission structure.

2. The electric-assisted bicycle control device according to claim 1, characterized in that, The transmission structure includes: The chain wheel is positioned away from the contact surface between the ring controller and the frame; A central shaft structure, one end of which passes through the ring controller and the frame and is fixedly connected to the chain wheel; In the axial direction, the annular controller is clamped between the central shaft structure and the vehicle frame.

3. The electric-assisted bicycle control device according to claim 2, characterized in that, Viewed along the axial direction, the annular controller has a fixing hole, and the central shaft structure passes through the fixing hole; Along the length of the central shaft structure, the central shaft structure is slidably connected to the fixing hole. The direction of the ring controller toward the chain wheel is defined as the first direction. When the ring controller is disassembled, the transmission structure can slide out of the frame along the first direction, so that the ring controller slides away from the central shaft structure away from the first direction.

4. The electric-assisted bicycle control device according to claim 3, characterized in that, The central shaft structure includes an axially arranged bearing tube and a central shaft rotatably connected to the bearing tube; Along the axial direction, the bearing tube passes through the fixing hole and the through hole and is fixed to the frame; One end of the central shaft passes through the bearing tube along the axial direction and is fixedly connected to the chain wheel.

5. The electric-assisted bicycle control device according to claim 1, characterized in that, The electric-assisted bicycle control device also includes a connector; Viewed along the axial direction, the connector is located on one side of the ring controller. One end of the connector is externally connected to the battery compartment and the motor, and the other end is electrically connected to the ring controller. The connector is electrically connected to both the battery compartment and the motor.

6. The electric-assisted bicycle control device according to claim 5, characterized in that, Viewed along the axial direction, the connector includes an input line and an output line extending in a direction perpendicular to the axial direction; The input line is electrically connected to the battery compartment; The output line is arranged in parallel with the input line and is electrically connected to the motor.

7. The electric-assisted bicycle control device according to claim 5, characterized in that, Viewed along the axial direction, the ring controller has heat dissipation fins on the side away from the connector.

8. The electric-assisted bicycle control device according to claim 4, characterized in that, Viewed along the axial direction, a locking portion is formed on the ring controller at the contact end with the frame and the bearing tube; In the first direction, one end of the clamping part abuts against the bearing tube near the end of the chain wheel, and the other end abuts against the frame.

9. The electric-assisted bicycle control device according to claim 8, characterized in that, Viewed along the axial direction, the contact surface between the bearing tube and the clamping part is the first abutting surface; In the first direction, the first abutting surface abuts against the locking part on the vehicle frame.

10. The electric-assisted bicycle control device according to claim 9, characterized in that, Viewed along the axial direction, on the vehicle frame, the contact surface between the vehicle frame and the clamping part is the second abutment surface; In the first direction, the second abutting surface abuts against the locking part on the first abutting surface.

Images