Intelligent power-assisted cycloidal-pin wheel speed-reducing middle motor
By installing the cycloid pin wheel speed reduction mechanism into the intelligent power assist bicycle mid-motor motor, and using pulleys and elastic adjustment modules, the problem of large installation positions and elastic belts in traditional designs is solved, achieving smaller volume and lower noise And lower cost smart powered bicycle motor design.
Patent Information
- Application Number
- CN202420869610.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-25
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-04-25
AI Technical Summary
The mid-motor motor in traditional intelligent power assist bicycles is designed separately from the cycloid pin wheel speed reduction mechanism, which leads to a large installation position and is easy to tighten after the belt is driven, affecting power transmission and noise problems.
An intelligent power-assisted cycloid pin wheel reduction center motor is designed, the cycloid pin wheel reduction mechanism is installed into the motor, and the pulley structure and belt elastic adjustment module are adopted to maintain the belt tension through the adjustment screw to optimize the transmission structure.
A smaller size and lightweight design is achieved, reducing motor noise, ensuring that the belt is always kept tight, reducing component processing and assembly accuracy requirements, and reducing costs.
Smart Images
Figure CN222224348U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bicycle motors, in particular to an intelligent power-assisted cycloid pinwheel deceleration mid-mounted motor. Background Art
[0002] An intelligent power-assisted bicycle is a bicycle equipped with an electric power-assisted system, which provides additional power support through an electric motor to make riding easier and more comfortable. Among them, the mid-mounted motor is the core component of the electric power-assisted system installed in the middle of the vehicle. It usually consists of an electric motor installed inside the frame or on the base, and transmits power to the wheels through a transmission system (such as a chain or belt), thereby providing riding assistance. The cycloidal pinwheel reduction mechanism is a transmission mechanism that transmits power through the meshing of the pinwheel and the cycloidal gear to achieve a deceleration effect.
[0003] The mid-mounted motor and the cycloidal pinwheel reduction mechanism in traditional intelligent power-assisted bicycles are designed separately, which requires a larger space for installation, and the belt is prone to looseness after long-term transmission. Based on this, this solution provides an intelligent power-assisted cycloidal pinwheel reduction mid-mounted motor to solve the above-mentioned problems. Utility Model Content
[0004] In order to solve the above technical problems, an intelligent power-assisted cycloidal pinwheel reduction mid-mounted motor is provided. This technical solution solves the problem that the mid-mounted motor and the cycloidal pinwheel reduction mechanism in the traditional intelligent power-assisted bicycle proposed in the above background technology are designed separately, requiring a larger space for installation, and the belt is prone to looseness after long-term transmission.
[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:
[0006] A smart power-assisted cycloid pinwheel reduction mid-mounted motor comprises a shell, a cycloid pinwheel reduction mechanism module and a central shaft, wherein the shell is fixedly mounted on a vehicle frame, the cycloid pinwheel reduction mechanism module is arranged inside the shell, a motor is arranged on the left side of the cycloid pinwheel reduction mechanism module, the motor is mounted inside the shell, the output end of the motor is fixedly connected to a one-way clutch bearing, the outer surface of the one-way clutch bearing is fixedly connected to a first pulley, the central shaft is rotatably mounted on the lower inner side of the shell, the right outer surface of the central shaft is fixedly connected to a second pulley, the outer surface of the second pulley is sleeved with a belt, the other end of the belt is sleeved on the surface of the first pulley, the second pulley is connected to the first pulley through a belt, and a belt tension adjustment module is arranged on the outer side of the belt.
[0007] Preferably, the belt tension adjustment module includes an adjustment plate and an adjustment screw, one end of the adjustment plate is rotatably connected to a fixed shaft, the fixed shaft is fixedly connected to the inner wall of the shell, the other end of the adjustment plate is rotatably connected to a tension wheel, and the outer surface of the tension wheel abuts against the output wheel.
[0008] Preferably, the adjusting screw is threadedly connected to the outer side wall of the shell, and one end of the adjusting screw disposed inside the shell abuts against the adjusting plate.
[0009] Preferably, the cycloid pinwheel reduction mechanism module is arranged on the connecting shaft between the motor and the one-way clutch bearing.
[0010] Preferably, a central shaft torque sensor module is installed on the left outer surface of the central shaft, and a clutch ratchet is fixedly connected to the middle outer surface of the central shaft.
[0011] Preferably, the central shaft is drivingly connected to an external wheel.
[0012] Compared with the prior art, the utility model proposes an intelligent power-assisted cycloid pinwheel deceleration mid-mounted motor, which has the following beneficial effects:
[0013] 1. In the utility model, the cycloid pinwheel reduction mechanism is installed inside the central motor of the intelligent power-assisted bicycle, which can be further optimized to make the size smaller and the weight lighter, solve the number of gears in the complicated coaxial reduction box, thereby reducing the volume space and making the transmission ratio range larger.
[0014] 2. The pulley structure adopted in the utility model can better realize power transmission, thereby optimizing the meshing noise problem of the metal gears of the reduction box and achieving lower motor noise. At the same time, a belt tension adjustment module is also provided for the belt transmission. By rotating the adjusting screw, the tension wheel is abutted against the outer side of the belt, so that the belt can always be kept in a tensioned state, thereby reducing the processing accuracy requirements of parts and components in disguise and reducing the assembly accuracy requirements, thereby better reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0016] Figure 2 This is a schematic diagram of the structure of the belt transmission in the utility model;
[0017] Figure 3 It is a structural schematic diagram of the belt tension adjustment module in the utility model.
[0018] The numbers in the figure are:
[0019] 1. Housing; 2. Cycloidal pinwheel reduction mechanism module; 3. Motor; 4. Middle shaft; 5. Middle shaft torque sensor module; 6. Clutch ratchet; 7. Output wheel; 8. Belt; 9. First pulley; 10. One-way clutch bearing; 11. Second pulley; 12. Belt tension adjustment module; 1201. Adjustment plate; 1202. Fixed shaft; 1203. Tensioner; 1204. Adjustment screw. DETAILED DESCRIPTION
[0020] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.
[0021] Reference Figure 1-3 As shown, an intelligent power-assisted cycloid pinwheel reduction mid-mounted motor comprises a housing 1, a cycloid pinwheel reduction mechanism module 2 and a central shaft 4. The housing 1 is fixedly mounted on a vehicle frame, the cycloid pinwheel reduction mechanism module 2 is arranged inside the housing 1, a motor 3 is arranged on the left side of the cycloid pinwheel reduction mechanism module 2, the motor 3 is mounted inside the housing 1, the output end of the motor 3 is fixedly connected to a one-way clutch bearing 10, a first pulley 9 is fixedly connected to the outer surface of the one-way clutch bearing 10, the central shaft 4 is rotatably mounted on the lower inner side of the housing 1, a second pulley 11 is fixedly connected to the outer surface of the right side of the central shaft 4, a belt 8 is sleeved on the outer surface of the second pulley 11, the other end of the belt 8 is sleeved on the surface of the first pulley 9, the second pulley 11 is transmission-connected to the first pulley 9 through the belt 8, and a belt tension adjustment module 12 is arranged on the outer side of the belt 8. The device can be further optimized by installing the cycloid pinwheel reduction mechanism 2 into the middle motor of the intelligent power-assisted bicycle, making it smaller in size and lighter in weight, solving the problem of the number of gears in the complicated coaxial reduction box, thereby reducing the volume space and making the transmission ratio range larger. At the same time, in order to better realize power transmission, a pulley structure is selected, which can effectively optimize the meshing noise problem of the metal gears of the reduction box and achieve lower motor noise.
[0022] Specifically, in this embodiment, the belt tension adjustment module 12 includes an adjustment plate 1201 and an adjustment screw 1204. One end of the adjustment plate 1201 is rotatably connected to the fixed shaft 1202, and the fixed shaft 1202 is fixedly connected to the inner wall of the housing 1. The other end of the adjustment plate 1201 is rotatably connected to the tension wheel 1203, and the outer surface of the tension wheel 1203 abuts against the output wheel 7. The belt tension adjustment module 12 can adjust the tension of the belt. By rotating the adjustment screw 1204, the tension wheel 1203 abuts against the outer side of the belt 8, so that the belt 8 can always be kept in a tensioned state, thereby reducing the machining accuracy requirements of parts and components in disguised form, reducing the assembly accuracy requirements, and thus better reducing costs.
[0023] Specifically, in this embodiment, the adjusting screw 1204 is threadedly connected to the outer wall of the housing 1 , and one end of the adjusting screw 1204 disposed inside the housing 1 abuts against the adjusting plate 1201 .
[0024] Specifically, in this embodiment, the cycloid pinwheel reduction mechanism module 2 is arranged on the connecting shaft between the motor 3 and the one-way clutch bearing 10 .
[0025] Specifically, in this embodiment, a middle shaft torque sensor module 5 is installed on the left outer surface of the middle shaft 4. The torque sensor 5 model can be HBM T40B. The torque sensor 5 is a sensor for measuring torque or torque. By using the torque sensor 5 in the electric power-assist system, the rider's pedaling force can be sensed and the output level of the electric power-assist can be adjusted as needed. The sensor can be any sensor that can achieve this function in the prior art without limitation. A clutch ratchet 6 is fixedly connected to the middle outer surface of the middle shaft 4. When the rider stops pedaling or slows down, the clutch ratchet allows the rear wheel to rotate freely without affecting the rider's pedaling movement.
[0026] Specifically, in this embodiment, the middle shaft 4 is drivingly connected to the wheels of the outside world.
[0027] The working principle of the utility model is: the device can be further optimized by installing the cycloid pinwheel reduction mechanism 2 into the middle motor of the intelligent power-assisted bicycle, making it smaller in size and lighter in weight, solving the problem of the number of gears in the complicated coaxial reduction box, thereby reducing the volume space and making the transmission ratio range larger.
[0028] At the same time, in order to better realize power transmission, a pulley structure is selected. The pulley structure can effectively optimize the metal gear meshing noise problem of the reduction box body and achieve lower motor noise. At the same time, a belt tension adjustment module 12 is provided to adjust the tightness of the belt. By rotating the adjusting screw 1204, the tension wheel 1203 is abutted against the outer side of the belt 8, so that the belt 8 can always remain in a tensioned state, which can in turn reduce the processing accuracy requirements of parts and components in disguise and reduce the assembly accuracy requirements, thereby better reducing costs.
[0029] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.
Claims
1. An intelligent power-assisted cycloid pinwheel reduction mid-mounted motor, characterized in that: The invention comprises a housing (1), a cycloidal pinwheel reduction mechanism module (2) and a central shaft (4), wherein the housing (1) is fixedly mounted on a vehicle frame, the cycloidal pinwheel reduction mechanism module (2) is arranged inside the housing (1), a motor (3) is arranged on the left side of the cycloidal pinwheel reduction mechanism module (2), the motor (3) is mounted inside the housing (1), the output end of the motor (3) is fixedly connected to a one-way clutch bearing (10), the outer surface of the one-way clutch bearing (10) is fixedly connected to a first belt pulley (9), the central shaft (4) is rotatably mounted on the lower side of the interior of the housing (1), the right outer surface of the central shaft (4) is fixedly connected to a second belt pulley (11), the outer surface of the second belt pulley (11) is sleeved with a belt (8), the other end of the belt (8) is sleeved on the surface of the first belt pulley (9), the second belt pulley (11) is transmission-connected to the first belt pulley (9) through the belt (8), and a belt tension adjustment module (12) is arranged on the outer side of the belt (8).
2. The intelligent power-assisted cycloid pinwheel reduction mid-mounted motor according to claim 1, characterized in that: The belt tension adjustment module (12) comprises an adjustment plate (1201) and an adjustment screw (1204); one end of the adjustment plate (1201) is rotatably connected to a fixed shaft (1202); the fixed shaft (1202) is fixedly connected to the inner wall of the housing (1); the other end of the adjustment plate (1201) is rotatably connected to an elastic wheel (1203); and the outer surface of the elastic wheel (1203) is in contact with the output wheel (7).
3. The intelligent power-assisted cycloid pinwheel reduction mid-mounted motor according to claim 2, characterized in that: The adjusting screw (1204) is threadedly connected to the outer wall of the housing (1), and one end of the adjusting screw (1204) disposed inside the housing (1) is in contact with the adjusting plate (1201).
4. The intelligent power-assisted cycloid pinwheel reduction mid-mounted motor according to claim 1, characterized in that: The cycloid pinwheel speed reduction mechanism module (2) is arranged on a connecting shaft between the motor (3) and the one-way clutch bearing (10).
5. The intelligent power-assisted cycloid pinwheel reduction mid-mounted motor according to claim 1, characterized in that: A central shaft torque sensor module (5) is installed on the left outer surface of the central shaft (4), and a clutch ratchet (6) is fixedly connected to the middle outer surface of the central shaft (4).
6. The intelligent power-assisted cycloid pinwheel reduction mid-mounted motor according to claim 1, characterized in that: The central shaft (4) is drivingly connected to the wheels of the outside world.