Hub motor of light electric bicycle

Abstract

The utility model discloses a light electric bicycle wheel hub motor, which relates to the technical field of wheel hub motors and comprises a motor body, rotating discs are rotatably connected to the left side and the right side of the motor body, a plurality of magnets are fixedly mounted on the sides, close to the motor body, of the two rotating discs, and the number of the magnets is eight. The middle of the outer surface of the motor body is fixedly connected with an installation circular ring, the middle of the outer side of the installation circular ring is fixedly provided with a coil, the front side of the outer surface of the motor body and the left side and the right side of the coil are fixedly connected with spoilers, and the middles of the left side and the right side of the motor body are fixedly connected with main shafts. The electric bicycle has the advantages that the magnet is used for cutting the magnetic field of the coil, then current is generated to supply power to the motor body, extra power support can be provided for the electric bicycle, and the endurance mileage of the electric bicycle is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of hub motors, in particular to a hub motor for a light electric bicycle. Background Art

[0002] There are two main types of existing electric bicycle motors: one is a mid-mounted motor installed on the middle axis of the bicycle, and the other is a hub motor integrated with the wheel hub. The hub motor is divided into two types: a low-speed hub motor and a geared hub motor with a planetary gear reduction mechanism. Due to the hysteresis resistance of the electric bicycle with a low-speed hub motor, the riding function of the bicycle is seriously weakened. The geared hub motor is a motor that is equipped with a drive motor, a planetary gear reduction mechanism and a one-way clutch in the internal space of the wheel hub and the end cover, and is more suitable for light electric bicycles with good riding functions and gliding capabilities.

[0003] The hub motor needs to use electricity as a power source. Due to the installation space limitation of electric bicycles, it is impossible to install a battery that is too large. Insufficient battery capacity will limit the range of the electric bicycle. The distance that users can travel after a single charge is short, which may not meet the needs of long-distance riding or daily commuting. If the battery life of the electric bicycle is insufficient, users may need to purchase additional spare batteries or upgrade them, which increases the cost of use and reduces the cost-effectiveness. In view of the above problems, a lightweight electric bicycle hub motor is proposed to solve them. Utility Model Content

[0004] In order to solve the above technical problems, a lightweight electric bicycle hub motor is provided, which solves the problem that the current hub motor needs to use electricity as a power source. Due to the installation space limitation of the electric bicycle, it is impossible to install a battery that is too large. Insufficient battery capacity will lead to limited cruising range of the electric bicycle. The distance that the user can travel after a single charge is short, which may not meet the needs of long-distance riding or daily commuting. If the electric bicycle has insufficient cruising range, the user may need to purchase additional spare batteries or upgrade them, which increases the cost of use and reduces the cost-effectiveness.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is: a light electric bicycle hub motor, including a motor body, the left and right sides of the motor body are rotatably connected with rotating disks, and the two rotating disks are fixedly installed with a plurality of magnets on one side close to the motor body. There are eight magnets in total, which are distributed on the inner side of the rotating disk in a circular array of four. A mounting ring is fixedly connected to the middle of the outer surface of the motor body, a coil is fixedly installed to the middle of the outer side of the mounting ring, spoilers are fixedly connected to the outer front side of the motor body and the left and right sides of the coil, the middle of the left and right sides of the motor body are fixedly connected to a main shaft, and the two rotating disks are fixedly connected to the outer side of the main shaft on the side away from the motor body.

[0006] Preferably, both left and right end surfaces of the main shaft are provided with external threads, and the left and right ends of the main shaft are designed to be flat.

[0007] Preferably, the left and right ends of the main shaft are threadedly connected with hollow nuts through external threads, and pin holes are provided on the left and right ends of the main shaft and the outer side of the hollow nut.

[0008] Preferably, a plurality of limiting columns are provided on the surface of the rotating disk on the left side, and the ends of the limiting columns are fixedly connected to the brake disk via fixing screws.

[0009] Preferably, a plurality of heat dissipation holes are formed through the surface of the brake disc.

[0010] Preferably, a plurality of spoke holes are formed through the surfaces of the two rotating disks, and water dispersion steps are provided on the outer surfaces of the rotating disks and around the oil seal.

[0011] Preferably, the front end of the spoiler is tapered.

[0012] Compared with the prior art, the utility model has the following advantages: the utility model drives the magnet to rotate when the rotating disk rotates, and uses the magnet to cut the magnetic field of the coil, thereby generating current to power the motor body, which can provide additional power support for the electric bicycle, thereby extending the cruising range of the electric bicycle, allowing users to travel farther after a single charge, and using magnets to cut the magnetic field to generate electricity can effectively improve energy utilization, convert mechanical energy into electrical energy, reduce energy waste, reduce carbon emissions and environmental pollution, and the power supply is in line with the concept of energy conservation and environmental protection. Since magnets are used to cut the magnetic field for additional power supply, the need for frequent charging is reduced, and the convenience and efficiency of use are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 It is an exploded view of the utility model;

[0015] Figure 3 for Figure 2 A local enlarged schematic diagram of point A in the middle.

[0016] The numbers in the figure are:

[0017] 1. Motor body; 2. Rotating plate; 3. Magnet; 4. Mounting ring; 5. Coil; 6. Main shaft; 7. External thread; 8. Pin hole; 9. Hollow nut; 10. Spoke hole; 11. Limit column; 12. Fixing screw; 13. Brake disc; 14. Heat dissipation hole; 15. Diffuser step; 16. Oil seal; 17. Spoiler. DETAILED DESCRIPTION

[0018] 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.

[0019] Reference Figure 1-3 As shown, a light electric bicycle hub motor includes a motor body 1, and rotating disks 2 are rotatably connected to the left and right sides of the motor body 1. A plurality of magnets 3 are fixedly installed on the side of the two rotating disks 2 close to the motor body 1. There are eight magnets 3 in total, which are distributed on the inner side of the rotating disk 2 in a circular array of four. A mounting ring 4 is fixedly connected to the middle of the outer surface of the motor body 1, and a coil 5 is fixedly installed on the middle of the outer side of the mounting ring 4. Spoilers 17 are fixedly connected to the outer front side of the motor body 1 and the left and right sides of the coil 5, and a main shaft 6 is fixedly connected to the middle of the left and right sides of the motor body 1. An oil seal 16 is fixedly connected to the outer side of the main shaft 6 on the side of the two rotating disks 2 away from the motor body 1.

[0020] Preferably, both left and right end surfaces of the main shaft 6 are provided with external threads 7, and the left and right ends of the main shaft 6 are designed to be flat. The flat design can provide a larger cross-sectional area, thereby increasing the lateral bending stiffness and torsional stiffness, helping to reduce deflection and deformation, while also reducing the materials required for manufacturing and reducing production costs.

[0021] Furthermore, the left and right ends of the main shaft 6 are threadedly connected with hollow nuts 9 through external threads 7, and pin holes 8 are provided on the left and right ends of the main shaft 6 and the outer sides of the hollow nut 9. The pin holes 8 are used to insert the pins. Through the hollow nuts 9 and the pin holes 8, the motor body 1 can be better fixed on the rear arm fork of the electric bicycle to prevent the main shaft 6 and the rear arm fork from loosening during long-term use.

[0022] Specifically, a plurality of limit posts 11 are provided on the surface of the left rotating disk 2, and the end of the limit post 11 is fixedly connected to the brake disk 13 by a fixing screw 12. The limit post 11 is used to control the distance between the rotating disk 2 and the brake disk 13, and to reserve sufficient space for the installation of the spokes.

[0023] It is worth mentioning that a plurality of heat dissipation holes 14 are formed on the surface of the brake disc 13. The addition of the mechanical brake disc 13 improves the braking efficiency to prevent the brake system inside the motor body 1 from malfunctioning and causing an accident due to excessive braking distance. The heat dissipation holes 14 can help accelerate the dissipation of heat, reduce the temperature of the brake disc 13, and prevent overheating, which helps to improve the performance stability of the brake system.

[0024] Preferably, a plurality of spoke holes 10 are formed through the surfaces of the two rotating disks 2, and water dispersion steps 15 are provided on the outer surface of the rotating disk 2 and around the oil seal 16. The spoke holes 10 are used for installing the spokes, and the water dispersion steps 15 can prevent water from accumulating on the rotating disk 2 and causing corrosion or rust of the rotating disk 2.

[0025] Furthermore, the front end of the spoiler 17 is tapered. The tapered design can reduce the resistance of the air at the front end of the spoiler 17, so that the airflow can completely wrap the motor body 1, better reduce the high temperature generated by the motor body 1 during operation, and ensure the safe and smooth operation of the motor body 1.

[0026] Working principle: The motor body 1 drives the rotating disks 2 on both sides to rotate, making the electric bicycle move forward or backward. When the rotating disk 2 rotates, the magnet 3 inside it will also rotate. While the magnet 3 rotates, it will cut the magnetic field of the coil 5 to generate current. The coil 5 is connected to an external transformer to increase the current, providing a certain amount of electrical energy for the operation of the motor body 1, thereby achieving the purpose of increasing the endurance of the electric bicycle.

[0027] 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. A light electric bicycle hub motor, comprising a motor body (1), characterized in that: The left and right sides of the motor body (1) are both rotatably connected to rotating disks (2); a plurality of magnets (3) are fixedly mounted on the sides of the two rotating disks (2) close to the motor body (1); there are eight magnets (3) in total, which are arranged in a circular array of four in a group on the inner side of the rotating disk (2); a mounting ring (4) is fixedly mounted on the middle of the outer surface of the motor body (1); a coil (5) is fixedly mounted on the middle of the outer side of the mounting ring (4); spoilers (17) are fixedly mounted on the outer front side of the motor body (1) and the left and right sides of the coil (5); a main shaft (6) is fixedly mounted on the middle of the left and right sides of the motor body (1); and an oil seal (16) is fixedly mounted on the outer side of the main shaft (6) on the sides of the two rotating disks (2) away from the motor body (1).

2. A light electric bicycle hub motor according to claim 1, characterized in that: External threads (7) are provided on the surfaces of both left and right ends of the main shaft (6), and the left and right ends of the main shaft (6) are designed to be flat.

3. The light electric bicycle hub motor according to claim 1, characterized in that: The left and right ends of the main shaft (6) are threadedly connected to hollow nuts (9) via external threads (7), and pin holes (8) are provided on the left and right ends of the main shaft (6) and the outer sides of the hollow nuts (9).

4. The light electric bicycle hub motor according to claim 1, characterized in that: A plurality of limit posts (11) are arranged on the surface of the rotating disk (2) on the left side, and the ends of the limit posts (11) are fixedly connected to the brake disk (13) via fixing screws (12).

5. A light electric bicycle hub motor according to claim 4, characterized in that: A plurality of heat dissipation holes (14) are formed through the surface of the brake disc (13).

6. The light electric bicycle hub motor according to claim 1, characterized in that: A plurality of spoke holes (10) are formed through the surfaces of the two rotating disks (2), and water dispersion steps (15) are provided on the outer surfaces of the rotating disks (2) and around the oil seal (16).

7. A light electric bicycle hub motor according to claim 1, characterized in that: The front end of the spoiler (17) is tapered.

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