Self-power-generation type exercise and fitness bicycle

Abstract

The invention relates to the technical field of fitness equipment, and particularly discloses a self-power-generation type exercise and fitness bicycle which comprises a bicycle frame, a rotating wheel arranged on the bicycle frame and pedals connected with the rotating wheel. The electric bicycle further comprises a control unit and a damping assembly which are arranged on the frame, the rotating wheel comprises a rotating shaft and a power generation unit arranged on the rotating shaft in a sleeving mode, power generated by the power generation unit is used for supplying power to the control unit and the damping assembly, a balance weight part is arranged on the shell, and the control unit is used for regulating and controlling the damping assembly and the balance weight part to enable generated resistance to be matched. The pedal drives the rotating wheel, the rotating wheel drives the permanent magnet to rotate relative to the stator winding through the shell, so that magnetic induction lines are cut for power generation, power is used for the control unit and the damping assembly, the self-power-generation function is achieved, a sporter can supply power to a control system of the bicycle in the exercise process, the requirement for an external power source is reduced, and the exercise efficiency is improved. Meanwhile, the damping assembly is matched with the balance weight to generate resistance, and the exercise effect is enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of fitness equipment, and in particular discloses a self-generating sports fitness bicycle. Background Art

[0002] As people's health awareness continues to improve, the demand for sports and fitness equipment is also increasing year by year. As a widely used aerobic fitness equipment, fitness bikes are deeply loved by consumers because of their easy operation, small footprint and suitability for people of all ages. However, traditional fitness bikes usually require external power supply to support their control system and resistance adjustment system, which not only increases the cost of use, but also limits the placement of the bike, and cannot meet users' demand for convenient and efficient fitness equipment.

[0003] At present, the resistance adjustment of fitness bikes on the market is usually achieved through mechanical or electrical control methods, such as adjusting the resistance of the flywheel through mechanical friction plates or magnetic control methods. Although these methods can provide certain resistance adjustment functions, they have certain limitations. The mechanical friction plate will wear out with the increase of usage time, resulting in unstable or weakened resistance; and the electrical control magnetic resistance method needs to rely on an external power supply and cannot achieve energy saving and environmental protection. In addition, the existing fitness bikes have a complex structure, a large size, and occupy a lot of space, which limits their wide application in home environments. Summary of the invention

[0004] In order to overcome the shortcomings and deficiencies in the prior art, the purpose of the present invention is to provide a sports fitness bicycle that can power its own control system, reducing the need for an external power supply, and at the same time can adjust the resistance to adapt to exercise for different groups of people, with a compact structure and small space occupation.

[0005] To achieve the above-mentioned purpose, a self-generating sports fitness bicycle of the present invention comprises a frame, a rotating wheel arranged on the frame, and a pedal connected to the rotating wheel; further comprising a control unit and a damping assembly arranged on the frame, wherein the rotating wheel comprises a rotating shaft and a power generation unit sleeved on the rotating shaft, wherein the power generation unit comprises a stator assembly and a rotor assembly, wherein the rotor assembly comprises a disc-shaped shell and a permanent magnet installed on the inner side of the shell, wherein the shell is connected to the rotating shaft, and the stator assembly comprises a stator winding arranged in cooperation with the permanent magnet, wherein the stator winding is connected to the frame; the stator winding is electrically connected to the control unit, and the control unit is electrically connected to the damping assembly, and the pedal is connected to the rotating shaft, wherein the pedal drives the rotating shaft to drive the shell to rotate, and the shell drives the permanent magnet to rotate relative to the stator winding, and the stator winding cuts the magnetic flux lines to generate electricity, and the electricity generated by the power generation unit is used to power the control unit and the damping assembly, and a counterweight is provided on the shell, and the control unit is used to adjust the resistance generated when the damping assembly cooperates with the counterweight. The present invention drives the rotating wheel through the foot pedal, and the rotating wheel drives the permanent magnet to rotate relative to the stator winding through the outer shell, thereby cutting the magnetic flux lines to generate electricity. The electricity is used for the control unit and the damping component, realizing the function of self-generation. The athlete can power the control system of the bicycle during exercise, reducing the demand for external power supply. At the same time, the damping component cooperates with the counterweight to generate resistance, thereby enhancing the exercise effect. The control unit controls the resistance of the damping component to adapt to the exercise of different people.

[0006] Furthermore, a gear set is provided between the rotating shaft and the housing, and the gear set includes a planetary carrier connected to the rotating shaft, a ring gear connected to the frame, multiple sets of planetary gears meshing with the ring gear, and a sun gear meshing with the planetary gears. The sun gear is connected to the housing, and multiple sets of planetary gears are connected to the planetary carrier. Multiple sets of planetary gears mesh with the sun gear and are arranged around the sun gear. The rotating rotating shaft drives the planetary carrier to rotate, and the rotating planetary carrier drives the sun gear to rotate via the planetary gears, and the rotating sun gear drives the housing to rotate. The pedal rotates the rotating shaft, drives the planetary gears and the sun gear to rotate through the planetary carrier, and finally drives the housing to rotate. The transmission of the gear set amplifies the driving force of the pedal and increases the power generation efficiency. The use of the planetary gear set amplifies the rotation speed, effectively improving the power generation efficiency. At the same time, the gear set has a compact structure and occupies less space.

[0007] Furthermore, the planetary carrier is an overrunning clutch, the outer shell is connected to the rotating shaft via bearings, and both ends of the rotating shaft are connected to the frame via bearings. The planetary carrier adopts an overrunning clutch, so that the rotating shaft drives the planetary carrier and the gear set to rotate only when the pedal is driven in the forward direction, avoiding the influence on the operation of the generator when it rotates in the reverse direction or stops, improving the stability and safety of the bicycle, avoiding the interference of the reverse rotation to the system, and enhancing the user experience.

[0008] Furthermore, the damping assembly includes a driving motor arranged on the frame, a brake belt connected to the output end of the driving motor, and a brake pad or a magnet unit arranged on the brake belt. The driving motor is electrically connected to the control unit. The counterweight is made of a magnetic conductive material. The magnet unit is used to attract the counterweight to generate resistance. The control unit controls the driving motor, and the motor drives the brake belt to adjust the position of the brake pad or the magnet unit, thereby changing the resistance to the counterweight (flywheel), and then adjusting the resistance of riding. By accurately controlling the damping size, flexible resistance adjustment is achieved, which improves the operability and comfort of riding exercise.

[0009] Furthermore, the magnet unit is a neodymium iron boron magnet, and the counterweight is a flywheel disc mounted on the housing. The neodymium iron boron magnet is arc-shaped and is used in conjunction with the flywheel disc; the control unit controls the drive motor to drive the brake belt to drive the neodymium iron boron magnet close to or away from the flywheel disc to adjust the magnetic force between the neodymium iron boron magnet and the flywheel disc. The control unit controls the motor to drive the neodymium iron boron magnet close to or away from the flywheel disc, and adjusts the resistance by changing the magnetic force. The use of neodymium iron boron magnets has high magnetic force and durability, and can provide more stable and efficient magnetic force adjustment, thereby accurately controlling the resistance and improving the user's riding experience.

[0010] Furthermore, the driving motor includes a base mounted on the frame, a cable motor mounted on the base, a support rod connecting the brake band and the base, and an elastic member connecting the brake band and the base. The output end of the cable motor is connected to the brake band via a cable. The cable motor wraps the cable around the output shaft to keep the brake band away from the flywheel and compresses the elastic member. The cable motor releases the cable, and the elastic member releases elastic potential energy to bring the brake band closer to the flywheel. This structure can achieve flexible resistance adjustment and utilize the potential energy recovery system of the elastic member to reduce the energy consumption of the motor.

[0011] Furthermore, the magnet unit is an electromagnet, which is electrically connected to a control unit. The control unit adjusts the magnetic force between the electromagnet and the flywheel by controlling the current of the electromagnet or controlling the drive motor to drive the brake belt to drive the electromagnet close to or away from the flywheel. By finely controlling the current, the magnetic force can be controlled more accurately, thereby providing a highly adjustable damping effect and improving the user experience.

[0012] Furthermore, the self-generating sports fitness bicycle also includes a driven counterweight wheel and a transmission assembly arranged on the frame. The driven counterweight wheel is connected to the rotating wheel via the transmission assembly. The structure of the driven counterweight wheel is the same as that of the rotating wheel. The stator winding of the driven counterweight wheel is electrically connected to the control unit. The power generated by the driven counterweight wheel is used to power the control unit to improve the power generation efficiency. In addition to the main rotating wheel, a driven counterweight wheel is provided and connected through the transmission assembly. In this way, the main rotating wheel drives the driven counterweight wheel to rotate synchronously, thereby realizing dual-wheel power generation, improving the power generation efficiency of the bicycle, especially during high-intensity exercise, and being able to provide power support more effectively.

[0013] Furthermore, the transmission assembly includes a driven wheel body and a transmission belt, the driven wheel body is connected to the rotating shaft of the driven counterweight wheel, the transmission belt is connected to the driven wheel body and the flywheel disc of the rotating wheel, and the ratio of the radius of the flywheel disc of the rotating wheel to the radius of the driven wheel body is 8-10. Through the gear ratio design (radius ratio 8-10) in the transmission assembly, the driven counterweight wheel can synchronously drive the large rotating wheel to move under the condition of small rotation, so as to realize efficient transmission. The high transmission ratio enables the driven counterweight wheel to generate more efficient power generation with less energy, thereby improving the overall energy efficiency ratio.

[0014] Furthermore, the control unit is connected to a battery, which is used to collect the electricity generated by the power generation unit. The electricity generated by the power generation unit can be stored in the battery and used to power the control unit and the damping component later, providing a stable energy storage mechanism. Even after the exercise, the power in the battery can still be used to supply the control system of the bicycle, improving the convenience and sustainability of use.

[0015] Beneficial effects of the present invention: The present invention drives the rotating wheel through the pedal, and the rotating wheel drives the permanent magnet to rotate relative to the stator winding through the shell, thereby cutting the magnetic flux lines to generate electricity, and the electricity is used for the control unit and the damping component, realizing the function of self-generation. The athlete can power the control system of the bicycle during exercise, reducing the demand for external power supply. At the same time, the damping component cooperates with the counterweight to generate resistance, enhance the exercise effect, and the control unit controls the resistance of the damping component to adapt to exercise for different people;

[0016] The transmission of the gear set amplifies the driving force of the pedal and increases the power generation efficiency. The use of the planetary gear set amplifies the rotation speed and effectively improves the power generation efficiency. At the same time, the gear set has a compact structure and occupies less space.

[0017] The planetary carrier adopts an overrunning clutch, so that the rotating shaft drives the planetary carrier and the gear set to rotate only when the pedal is driven in the forward direction, avoiding the influence of the operation of the generator when it rotates in the reverse direction or stops, improving the stability and safety of the bicycle, avoiding the interference of the reverse rotation to the system, and enhancing the user experience;

[0018] The control unit controls the driving motor, and the motor drives the brake belt to adjust the position of the brake pad or the magnet unit, thereby changing the resistance to the counterweight (flywheel disc), and then adjusting the resistance of riding. By accurately controlling the damping size, flexible resistance adjustment is achieved, which improves the operability and comfort of riding exercise.

[0019] In addition to the main rotating wheel, a driven counterweight wheel is provided, which is connected through a transmission assembly. In this way, the main rotating wheel drives the driven counterweight wheel to rotate synchronously, thereby realizing dual-wheel power generation, improving the power generation efficiency of the bicycle, especially during high-intensity exercise, and being able to provide power support more effectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a self-powered exercise bike of the present invention;

[0021] Figure 2 is an exploded schematic diagram of the rotating wheel of the present invention;

[0022] Figure 3 is a cross-sectional view of a rotating wheel of the present invention;

[0023] Figure 4 It is a schematic structural diagram of the rotating wheel and the damping assembly of the present invention;

[0024] Figure 5 It is a structural schematic diagram of a third embodiment of a self-powered exercise bicycle of the present invention;

[0025] Figure 6 is an exploded schematic diagram of the planet carrier of the present invention;

[0026] Figure 7 It is a schematic structural diagram of the wedge block of the present invention.

[0027] Reference numerals include:

[0028] 1. Frame; 2. Rotating wheel; 3. Pedal; 4. Control unit; 5. Damping assembly; 6. Rotating shaft; 7. Stator winding; 8. Stator assembly; 9. Rotor assembly; 10. Housing; 11. Permanent magnet; 12. Gear set; 13. Planet carrier; 14. Ring gear; 15. Planetary gear; 16. Sun gear; 17. Driving motor; 18. Brake belt; 19. Magnet unit; 20. Flywheel; 21. Base; 22. Cable motor; 23. Support rod; 24. Elastic member; 25. Driven counterweight wheel; 26. Transmission assembly; 27. Driven wheel body; 28. Inner gear ring; 29. ​​Outer gear ring; 30. Wedge assembly; 31. Fixed frame; 32. Spring; 33. Wedge; 34. First contact part; 35. Second contact part. DETAILED DESCRIPTION

[0029] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0030] See also Figures 1 to 7 As shown, a self-generating exercise bike of the present invention comprises a frame 1, a rotating wheel 2 arranged on the frame 1, and a pedal 3 connected to the rotating wheel 2; it also comprises a control unit 4 and a damping assembly 5 arranged on the frame 1, the rotating wheel 2 comprises a rotating shaft 6, a power generation unit sleeved on the rotating shaft 6, the power generation unit comprises a stator assembly 8 and a rotor assembly 9, the rotor assembly 9 comprises a disc-shaped shell 10 and a permanent magnet 11 installed inside the shell 10, the shell 10 is connected to the rotating shaft 6, the stator assembly 8 comprises a permanent magnet 11 arranged in cooperation with the permanent magnet 11 The stator winding 7 is connected to the frame 1; the stator winding 7 is electrically connected to the control unit 4, the control unit 4 is electrically connected to the damping assembly 5, the foot pedal 3 is connected to the rotating shaft 6, the foot pedal 3 drives the rotating shaft 6 to drive the outer shell 10 to rotate, the outer shell 10 drives the permanent magnet 11 to rotate relative to the stator winding 7, the stator winding 7 cuts the magnetic flux lines to generate electricity, the electricity generated by the power generation unit is used to power the control unit 4 and the damping assembly 5, a counterweight is provided on the outer shell 10, and the control unit 4 is used to adjust the resistance generated when the damping assembly 5 cooperates with the counterweight. The present invention drives the rotating wheel 2 through the foot pedal 3, and the rotating wheel 2 drives the permanent magnet 11 to rotate relative to the stator winding 7 through the shell 10, thereby cutting the magnetic flux lines to generate electricity. The electricity is used to control the control unit 4 and the damping component 5, realizing the function of self-generation. The athlete can power the control system of the bicycle during exercise, reducing the demand for external power supply. At the same time, the damping component 5 cooperates with the counterweight to generate resistance, thereby enhancing the exercise effect. The control unit 4 controls the resistance of the damping component 5 to adapt to the exercise of different people. At the same time, the structure is compact and occupies less space.

[0031] A gear set 12 is provided between the rotating shaft 6 and the housing 10. The gear set 12 includes a planet carrier 13 connected to the rotating shaft 6, a ring gear 14 connected to the frame 1, multiple sets of planetary gears 15 meshing with the ring gear 14, and a sun gear 16 meshing with the planetary gear 15. The sun gear 16 is connected to the housing 10, and multiple sets of planetary gears 15 are connected to the planet carrier 13. Multiple sets of planetary gears 15 mesh with the sun gear 16 and are arranged around the sun gear 16. The rotating rotating shaft 6 drives the planet carrier 13 to rotate, and the rotating planet carrier 13 drives the sun gear 16 to rotate through the planetary gear 15, and the rotating sun gear 16 drives the housing 10 to rotate. The pedal 3 rotates the rotating shaft 6, drives the planetary gears 15 and the sun gear 16 to rotate through the planet carrier 13, and finally drives the housing 10 to rotate. The transmission of the gear set 12 amplifies the driving force of the pedal 3, increases the power generation efficiency, and uses the planetary gear 15 group 12 to amplify the rotation speed, effectively improving the power generation efficiency. At the same time, the gear set 12 has a compact structure and occupies a small space.

[0032] The planet carrier 13 is an overrunning clutch, the housing 10 is connected to the rotating shaft 6 via bearings, and both ends of the rotating shaft 6 are connected to the frame 1 via bearings. The planet carrier 13 uses an overrunning clutch, so that the rotating shaft 6 drives the planet carrier 13 and the gear set 12 to rotate only when the pedal 3 is driven in the forward direction, avoiding the influence on the operation of the generator when it rotates in the reverse direction or stops, improving the stability and safety of the bicycle, avoiding the interference of the reverse rotation to the system, and enhancing the user experience.

[0033] The power generation unit is an external-rotation generator, and the outer rotor of the external-rotation generator, that is, the outer shell 10 is directly sleeved with a counterweight. Compared with the internal-rotation generator, the structure is simpler and the manufacturing cost is lower.

[0034] The gear set 12 cooperates with the power generation unit, and the reduction ratio of the gear set 12 amplifies the power generation of the generator, thereby reducing the manufacturing cost compared to using a generator with a larger power.

[0035] The reducer is matched with the external motor. The reduction ratio of the reducer amplifies the power of the motor, which reduces the manufacturing cost compared to using a high-power motor.

[0036] Specifically, the overrunning clutch is a wedge-type overrunning clutch, which includes an inner gear ring 28, an outer gear ring 29 sleeved outside the inner gear ring 28, a wedge assembly 30 is filled between the inner gear ring 28 and the outer gear ring 29, the wedge assembly 30 includes a fixing frame 31, a spring 32 and a plurality of wedges 33, the plurality of wedges 33 are arranged on the fixing frame 31 at intervals along the circumferential direction of the fixing frame 31, the spring 32 is sequentially clamped to the plurality of wedges 33 and annularly arranged on the fixing frame 31, the wedge 33 includes a first contact portion 34 and a second contact portion 35, the first The contact portion 34 and the second contact portion 35 are both in an arc-shaped structure. The first contact portion 34 is tightly pressed against the outer side of the inner gear ring 28. When the pedal 3 is rotated, the inner gear ring 14 starts to rotate clockwise. At this time, the outer side of the inner gear ring 28 and the first contact portion 34 interfere with each other, driving the inner side of the outer gear ring 29 to be pressed and contacted with the second contact portion 35. At this time, when the wedge block 33 does not move, the first contact portion 34 and the second contact portion 35 respectively press the inner gear ring 14 and the outer gear ring 14, driving the outer gear ring 14 to work and realize force transmission. When the outer gear ring 14 rotates counterclockwise, the second contact portion 35 and the inner side of the outer gear ring 29 of the outer gear ring 14 are not meshed and separated and are in a disengaged state, and no interference extrusion can be formed. At this time, the bicycle is in a gliding state, realizing one-way operation, improving the gliding distance and riding comfort.

[0037] The damping assembly 5 includes a driving motor 17 arranged on the frame 1, a brake belt 18 connected to the output end of the driving motor 17, and a brake pad or a magnet unit 19 arranged on the brake belt 18. The driving motor 17 is electrically connected to the control unit 4. The counterweight is made of a magnetic conductive material. The magnet unit 19 is used to attract the counterweight to generate resistance. The driving motor 17 is controlled by the control unit 4, and the motor drives the brake belt 18 to adjust the position of the brake pad or the magnet unit 19, thereby changing the resistance to the counterweight (flywheel 20), and then adjusting the resistance of riding. By accurately controlling the damping size, flexible resistance adjustment is achieved, which improves the operability and comfort of riding exercise.

[0038] In this embodiment, the magnet unit 19 is a neodymium iron boron magnet, and the counterweight is a flywheel disc 20 sleeved on the housing 10. The neodymium iron boron magnet is arc-shaped and is used in conjunction with the flywheel disc 20; the control unit 4 controls the drive motor 17 to drive the brake belt 18 to drive the neodymium iron boron magnet to approach or move away from the flywheel disc 20 to adjust the magnetic force between the neodymium iron boron magnet and the flywheel disc 20. The control unit 4 controls the motor to drive the neodymium iron boron magnet to approach or move away from the flywheel disc 20, and adjusts the resistance by changing the magnetic force. The use of neodymium iron boron magnets has high magnetic force and durability, and can provide more stable and efficient magnetic force adjustment, thereby accurately controlling the resistance and improving the user's riding experience.

[0039] The driving motor 17 includes a base 21 mounted on the frame 1, a cable motor 22 mounted on the base 21, a support rod 23 connecting the brake band 18 and the base 21, and an elastic member 24 connecting the brake band 18 and the base 21. The output end of the cable motor 22 is connected to the brake band 18 via a cable. The cable motor 22 wraps the cable around the output shaft to keep the brake band 18 away from the flywheel 20 and compresses the elastic member 24. The cable motor 22 releases the cable, and the elastic member 24 releases the elastic potential energy, so that the brake band 18 is close to the flywheel 20. This structure can achieve flexible resistance adjustment, and at the same time, the potential energy recovery system of the elastic member 24 is utilized to reduce the energy consumption of the motor.

[0040] In the second embodiment, the magnet unit 19 is an electromagnet, which is electrically connected to the control unit 4. The control unit 4 drives the electromagnet to approach or move away from the flywheel 20 by controlling the current of the electromagnet or controlling the drive motor 17 to drive the brake belt 18 to adjust the magnetic force between the electromagnet and the flywheel 20. By finely controlling the current, the magnetic force can be controlled more accurately, thereby providing a highly adjustable damping effect and improving the user experience.

[0041] like Figure 5 As shown, in the third embodiment, the self-generating sports fitness bicycle further includes a driven counterweight wheel 25 and a transmission assembly 26 arranged on the frame 1. The driven counterweight wheel 25 is connected to the rotating wheel 2 via the transmission assembly 26. The structure of the driven counterweight wheel 25 is the same as that of the rotating wheel 2. The stator winding 7 of the driven counterweight wheel 25 is electrically connected to the control unit 4. The power generated by the driven counterweight wheel 25 is used to power the control unit 4 to improve the power generation efficiency. In addition to the main rotating wheel 2, a driven counterweight wheel 25 is provided, which is connected through the transmission assembly 26, so that the main rotating wheel 2 drives the driven counterweight wheel 25 to rotate synchronously, thereby realizing dual-wheel power generation, improving the power generation efficiency of the bicycle, especially during high-intensity exercise, and can provide power support more effectively.

[0042] Specifically, the damping assembly 5 is provided with two groups, and the two groups of damping assemblies 5 are respectively arranged in cooperation with the flywheel disc 20 of the rotating wheel 2 and the driven counterweight wheel 25.

[0043] Specifically, the control unit 4 is a touch screen, which can provide users with a more convenient and intuitive operation interface. The touch screen can display various information, such as the current riding time, speed, distance, calories consumed, heart rate (such as connected to relevant sensors), etc. At the same time, the user can easily adjust the resistance, select different riding modes, view exercise history data, etc. by touching the control interface on the screen. The touch screen can also support other functions, such as Bluetooth connection, synchronization with fitness applications, etc.

[0044] Specifically, the control unit 4 is provided with an output port, and the output port can be used to charge external electronic products.

[0045] The transmission assembly 26 includes a driven wheel body 27 and a transmission belt. The driven wheel body 27 is connected to the rotating shaft 6 of the driven counterweight wheel 25. The transmission belt transmission connects the driven wheel body 27 and the flywheel disc 20 of the rotating wheel 2. The ratio of the radius of the flywheel disc 20 of the rotating wheel 2 to the radius of the driven wheel body 27 is 8-10. Through the gear ratio design (radius ratio 8-10) in the transmission assembly 26, the driven counterweight wheel 25 can synchronously drive the large rotating wheel to move under the condition of small rotation, so as to realize efficient transmission. The high transmission ratio enables the driven counterweight wheel 25 to generate more efficient power generation with less energy, thereby improving the overall energy efficiency ratio.

[0046] The control unit 4 is connected to a battery, which is used to collect the electricity generated by the power generation unit. The electricity generated by the power generation unit can be stored in the battery and used to power the control unit 4 and the damping component 5 later, providing a stable energy storage mechanism. Even after the exercise, the power in the battery can still be used to supply the control system of the bicycle, which improves the convenience and sustainability of use.

[0047] In the first implementation, the user steps on the pedal 3, which is connected to the shaft 6 of the rotating wheel 2, driving the shaft 6 to rotate, and the rotating shaft 6 drives the overrunning clutch to rotate, and the rotating overrunning clutch drives the sun gear 16 to rotate via the planetary gear 15, and the rotating sun gear 16 drives the housing 10 to rotate, and the shaft 6 amplifies the rotation speed through the planetary gear 15 group 12. A plurality of permanent magnets 11 are arranged in the housing 10, and the permanent magnets 11 rotate with the housing 10 and move relative to the fixed stator winding 7. During the rotation process, the permanent magnets 11 cut the magnetic flux lines around the stator winding 7, thereby generating an induced current in the stator winding 7, and the generated current is supplied to the control unit 4 and the damping component 5 through the circuit to realize the self-generating function; the user adjusts the resistance of the damping component 5 through the control unit 4, and the damping component 5 includes a motor, a brake belt 18 and a magnet unit 19. Through the control unit 4, the motor drives the brake belt 18 to change the distance between the magnet and the flywheel disc 20. The flywheel 20 acts as a counterweight and generates magnetic force with the neodymium iron boron magnet (or electromagnet). The user can change the magnetic force by adjusting the distance between the magnet and the flywheel 20, thereby adjusting the resistance of the bicycle. When the magnet is close to the flywheel 20, the magnetic force increases and the resistance increases; when the magnet is away from the flywheel 20, the resistance decreases. In this way, the user can adjust the resistance according to their own needs to adapt to the needs of exercise of different intensities.

[0048] In the third embodiment, in addition to the main rotating wheel 2, the bicycle is also designed with a driven counterweight wheel 25, which rotates synchronously with the main wheel and is connected through gears and a transmission belt. The main wheel drives the driven counterweight wheel 25, further increasing the power generation efficiency of the power generation unit. The stator winding 7 of the driven counterweight wheel 25 is electrically connected to the control unit 4, and the power generation can also be used to power the control unit 4, thereby improving the overall power generation efficiency.

[0049] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A self-generating exercise bike, comprising a frame (1), a rotating wheel (2) arranged on the frame (1), and a pedal (3) connected to the rotating wheel (2); characterized in that: The invention also comprises a control unit (4) and a damping assembly (5) arranged on the vehicle frame (1); the rotating wheel (2) comprises a rotating shaft (6), a power generation unit sleeved on the rotating shaft (6); the power generation unit comprises a stator assembly (8) and a rotor assembly (9); the rotor assembly (9) comprises a disc-shaped outer shell (10) and a permanent magnet (11) mounted on the inner side of the outer shell (10); the outer shell (10) is connected to the rotating shaft (6); the stator assembly (8) comprises a stator winding (7) arranged in cooperation with the permanent magnet (11); the stator winding (7) is connected to the vehicle frame (1); and the stator winding (7) The control unit (4) is electrically connected to the damping assembly (5). The foot pedal (3) is connected to the rotating shaft (6). The foot pedal (3) drives the rotating shaft (6) to drive the outer shell (10) to rotate. The outer shell (10) drives the permanent magnet (11) to rotate relative to the stator winding (7). The stator winding (7) cuts the magnetic flux lines to generate electricity. The electricity generated by the power generation unit is used to supply power to the control unit (4) and the damping assembly (5). A counterweight is provided on the outer shell (10). The control unit (4) is used to adjust the resistance generated when the damping assembly (5) cooperates with the counterweight.

2. The self-generating exercise bike according to claim 1, characterized in that: A gear set (12) is provided between the rotating shaft (6) and the housing (10), the gear set (12) comprising a planet carrier (13) connected to the rotating shaft (6), a ring gear (14) connected to the vehicle frame (1), a plurality of sets of planetary gears (15) meshing with the ring gear (14), and a sun gear (16) meshing with the planetary gears (15); the sun gear (16) is connected to the housing (10); the plurality of sets of planetary gears (15) are connected to the planet carrier (13); the plurality of sets of planetary gears (15) mesh with the sun gear (16) and are arranged around the sun gear (16); the rotating rotating shaft (6) drives the planet carrier (13) to rotate; the rotating planet carrier (13) drives the sun gear (16) to rotate via the planetary gears (15); and the rotating sun gear (16) drives the housing (10) to rotate.

3. A self-generating exercise bike according to claim 2, characterized in that: The planet carrier (13) is an overrunning clutch, the housing (10) is connected to the rotating shaft (6) via bearings, and both ends of the rotating shaft (6) are connected to the vehicle frame (1) via bearings.

4. The self-generating exercise bike according to claim 1, characterized in that: The damping assembly (5) comprises a driving motor (17) arranged on the vehicle frame (1), a brake belt (18) connected to the output end of the driving motor (17), and a brake pad or a magnet unit (19) arranged on the brake belt (18); the driving motor (17) is electrically connected to the control unit (4); the counterweight is made of a magnetic conductive material; and the magnet unit (19) is used to attract the counterweight to generate resistance.

5. The self-generating exercise bike according to claim 4, characterized in that: The magnet unit (19) is a neodymium iron boron magnet, the counterweight is a flywheel disc (20) sleeved on the housing (10), the neodymium iron boron magnet is arc-shaped and is used in conjunction with the flywheel disc (20); the control unit (4) controls the drive motor (17) to drive the brake belt (18) to drive the neodymium iron boron magnet to approach or move away from the flywheel disc (20), so as to adjust the magnetic force between the neodymium iron boron magnet and the flywheel disc (20).

6. The self-generating exercise bike according to claim 5, characterized in that: The driving motor (17) comprises a base (21) mounted on the frame (1), a cable motor (22) mounted on the base (21), a support rod (23) connecting the brake band (18) and the base (21), and an elastic member (24) connecting the brake band (18) and the base (21). The output end of the cable motor (22) is connected to the brake band (18) via a cable. The cable motor (22) winds the cable around the output shaft to move the brake band (18) away from the flywheel (20) and compresses the elastic member (24). The cable motor (22) releases the cable, and the elastic member (24) releases the elastic potential energy, so that the brake band (18) approaches the flywheel (20).

7. The self-generating exercise bike according to claim 5, characterized in that: The magnet unit (19) is an electromagnet, which is electrically connected to a control unit (4). The control unit (4) drives the electromagnet to approach or move away from the flywheel disc (20) by controlling the current of the electromagnet or controlling the drive motor (17) to drive the brake belt (18) to adjust the magnetic force between the electromagnet and the flywheel disc (20).

8. The self-generating exercise bike according to claim 1, characterized in that: The self-generating sports fitness bicycle further comprises a driven counterweight wheel (25) and a transmission assembly (26) arranged on the frame (1); the driven counterweight wheel (25) is connected to the rotating wheel (2) via the transmission assembly (26); the structure of the driven counterweight wheel (25) is the same as that of the rotating wheel (2); the stator winding (7) of the driven counterweight wheel (25) is electrically connected to the control unit (4); and the electricity generated by the driven counterweight wheel (25) is used to power the control unit (4).

9. A self-generating exercise bike according to claim 5 or 8, characterized in that: The transmission assembly (26) comprises a driven wheel body (27) and a transmission belt. The driven wheel body (27) is connected to the rotating shaft (6) of the driven counterweight wheel (25). The transmission belt is connected to the driven wheel body (27) and the flywheel disc (20) of the rotating wheel (2). The ratio of the radius of the flywheel disc (20) of the rotating wheel (2) to the radius of the driven wheel body (27) is 8-10.

10. The self-generating exercise bike according to claim 1, characterized in that: The control unit (4) is connected to a storage battery, and the storage battery is used to collect the electricity generated by the power generation unit.

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