Motor resistance type fitness bicycle

Abstract

The invention relates to the technical field of body-building bicycles, and particularly discloses a motor resistance type body-building bicycle which comprises a bearing frame body, a rotating shaft rotationally arranged on the bearing frame body and pedals connected with the rotating shaft, and a rider drives the rotating shaft to rotate relative to the bearing frame body through the pedals; the device further comprises a resistance motor, a power module and a resistance adjusting unit. The resistance motor comprises a stator unit and a rotor unit, the rotor unit is provided with an outer shell in transmission connection with the rotating shaft, the power module is used for supplying power to the stator unit to generate a magnetic field to drive the rotor unit to generate rotating force, and the rotating direction of the rotating shaft is opposite to that of the rotating force generated by the magnetic field driving rotor unit; and the resistance adjusting unit is used for adjusting the current supplied to the resistance motor by the power supply module so as to adjust the riding resistance of the fitness bicycle. The external rotation motor is introduced to serve as a resistance source, and the power module and the resistance adjusting unit are combined, so that the riding resistance of the fitness bicycle can be accurately controlled and dynamically adjusted.

Description

Technical Field

[0001] The invention relates to the technical field of fitness bicycles, and in particular discloses a motor resistance type fitness bicycle. Background Art

[0002] In the field of fitness equipment, fitness bikes are a popular indoor aerobic exercise equipment designed to simulate the experience of outdoor cycling while providing adjustable resistance to meet the exercise needs of different users. Traditional fitness bikes usually use mechanical resistance adjustment systems, such as magnetic resistance or friction resistance. Although these systems can adjust the resistance, they have certain limitations in accuracy, response speed and user experience. Specifically, mechanical resistance adjustment systems often rely on manual adjustment or preset resistance levels, which makes it difficult to achieve fine resistance control, and the adjustment process is not intuitive and convenient enough. In addition, mechanical resistance systems may generate greater noise and wear when working, affecting the user's exercise experience and the durability of the equipment. Summary of the invention

[0003] In order to overcome the shortcomings and deficiencies in the prior art, the object of the present invention is to provide a motor resistance type fitness bicycle to solve the above technical problems.

[0004] To achieve the above-mentioned purpose, the present invention provides a motor resistance type fitness bicycle, comprising a supporting frame, a rotating shaft rotatably arranged on the supporting frame, and pedals connected to the rotating shaft, wherein a rider drives the rotating shaft to rotate relative to the supporting frame via the pedals; the bicycle also comprises a resistance motor, a power supply module, and a resistance adjustment unit; the resistance motor comprises a stator unit and a rotor unit, the rotor unit has an outer shell drivingly connected to the rotating shaft, the power supply module is used to supply power to the stator unit so that it generates a magnetic field to drive the rotor unit to generate a rotational force, and the direction of rotation of the rotating shaft driven by the rider is opposite to the direction of the rotational force generated by the rotor unit driven by the magnetic field; the resistance adjustment unit is connected between the power supply module and the resistance motor to adjust the magnitude of the current supplied by the power supply module to the resistance motor and thereby adjust the magnitude of the riding resistance of the fitness bicycle.

[0005] Furthermore, the fitness bike also includes a reduction mechanism arranged on the carrier body, the rotating shaft is transmission-connected to the outer shell of the rotor unit via the reduction mechanism, and the reduction mechanism is used to reduce the rotation speed of the outer shell to extend the time interval of each rotation of the outer shell relative to the stator unit.

[0006] Furthermore, the reduction mechanism includes an inner gear ring fixedly mounted on the carrier body, a sun gear transmission connected to the rotating shaft, planetary gears meshing between the inner gear ring and the sun gear, and a planetary carrier rotatably arranged on the rotating shaft, a transmission rod is provided on the planetary carrier, the planetary gears are rotatably arranged on the transmission rod, one end of the transmission rod is arranged on the planetary carrier, the other end of the transmission rod passes through the planetary gear and is fixedly connected to the outer shell, and the planetary gears are rotatably arranged on the transmission rod; the rotating shaft drives the planetary gears to rotate via the sun gear, and the rotating planetary gears drive the outer shell to rotate relative to each other via the planetary carrier.

[0007] Furthermore, there are multiple planetary gears, and the multiple planetary gears are arranged around the rotation axis of the sun gear.

[0008] Furthermore, the resistance adjustment unit includes a control system connected to the power module and a touch screen disposed on the carrier body and connected to the control system. The rider adjusts the riding resistance by controlling the current output from the power module to the resistance motor through the touch screen.

[0009] Furthermore, the stator unit includes a stator core fixedly mounted on a supporting frame and a coil winding arranged on the stator core. The power module is electrically connected to the coil winding for supplying current to the coil winding so that it generates a magnetic field. The outer shell is disc-shaped and covers the coil winding. The inner side of the outer shell is provided with a magnetic part used in conjunction with the magnetic field generated by the energized coil winding.

[0010] Furthermore, the support frame body includes a base frame, a first support frame and a second support frame arranged on the base frame, the base frame is used to be placed on a support surface of an external support object, the first support frame is vertically arranged relative to the base frame, and the second support frame is inclined relative to the first support frame; the first support frame is provided with a handlebar assembly for the rider to hold, and the second support frame is provided with a seat cushion for supporting the rider.

[0011] Furthermore, a first telescopic rod is telescopically arranged on the second bearing frame, the seat cushion is detachably mounted on the first telescopic rod, and a first knob for adjusting the telescopic stroke of the first telescopic rod is arranged on the second bearing frame.

[0012] Furthermore, the fitness bike also includes a load bracket detachably connected to the load frame body, the resistance motor and the reduction mechanism are both arranged on the load bracket, and the rotating shaft passes through the resistance motor and the reduction mechanism and rotates with the load bracket via a bearing.

[0013] Furthermore, a first cover shell is provided on the carrier body, and the first cover shell has an accommodating space for accommodating a reduction mechanism and a resistance motor. The inner wall of the first cover shell is provided with a sound insulation layer, and the sound insulation layer is made of sound-absorbing material. The sound insulation layer is used to reduce the mechanical noise generated by the reduction mechanism and the resistance motor.

[0014] Beneficial effects of the present invention: The motor resistance fitness bike proposed in the present invention, by introducing an external motor as a resistance source, combined with a power module and a resistance adjustment unit, realizes precise control and dynamic adjustment of riding resistance. Specifically, by adjusting the current supplied by the power module to the resistance motor, precise control of riding resistance can be achieved to meet the personalized needs of different users and achieve high-precision resistance adjustment. Low noise and smooth operation: The structural characteristics of the external motor cooperate with the planetary reduction mechanism to extend the single time interval when the rotor unit rotates relative to the stator unit, making the rotation of the rotor unit smoother and more stable. Combined with the design of the sound insulation layer, the mechanical noise is further reduced, and the user's exercise experience is enhanced. Ease of operation and user experience: Through modern control means such as touch screens, users can intuitively adjust the riding resistance with more intelligent and convenient operations, which is simple, fast and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the three-dimensional structure of the fitness bicycle of the present invention;

[0016] Figure 2 It is a schematic diagram of the three-dimensional structure of the fitness bicycle of the present invention after the supporting frame is removed;

[0017] Figure 3 It is a structural schematic diagram of the resistance motor and the speed reduction mechanism of the present invention in an exploded state;

[0018] Figure 4 It is a structural schematic diagram of the resistance motor and the speed reduction mechanism of the present invention;

[0019] Figure 5 It is a side view of the fitness bicycle of the present invention.

[0020] Reference numerals include:

[0021] 1. Carrying frame body; 2. Resistance motor; 3. Power module; 4. Speed ​​reduction mechanism; 5. Touch screen; 6. Base frame; 7. Load bracket; 8. First cover shell; 11. Rotating shaft; 12. Pedal; 21. Stator unit; 211. Stator core; 212. Coil winding; 22. Rotor unit; 221. Outer shell; 222. Magnetic member; 41. Internal gear ring; 42. Planetary gear; 43. Sun gear; 44. Planetary carrier; 45. Transmission rod; 61. First carrier; 610. Second telescopic rod; 611. Handlebar assembly; 62. Second carrier; 620. First telescopic rod; 621. Seat; 622. First knob; 63. Roller; 64. Silicone anti-skid pad; 71. Bearing. DETAILED DESCRIPTION

[0022] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0023] See also Figures 1 to 5 As shown, a motor resistance fitness bicycle of the present invention comprises a supporting frame body 1, a rotating shaft 11 rotatably arranged on the supporting frame body 1 and a pedal 12 connected to the rotating shaft 11, and a rider drives the rotating shaft 11 to rotate relative to the supporting frame body 1 via the pedal 12; it also comprises a resistance motor 2, a power supply module 3 and a resistance adjustment unit; the resistance motor 2 comprises a stator unit 21 and a rotor unit 22, the rotor unit 22 has an outer shell 221 drivingly connected to the rotating shaft 11, the power supply module 3 is used to supply power to the stator unit 21 so that it generates a magnetic field to drive the rotor unit 22 to generate a rotational force, and the rotation direction of the rotating shaft 11 driven by the rider is opposite to the direction of the rotational force generated by the magnetic field driving the rotor unit 22; the resistance adjustment unit is connected between the power supply module 3 and the resistance motor 2 to adjust the magnitude of the current supplied to the resistance motor 2 by the power supply module 3 and thereby adjust the magnitude of the riding resistance of the fitness bicycle.

[0024] In this embodiment, the resistance motor 2 adopts an external rotating motor, the rotating shaft 11 is installed on the supporting frame body 1 through the bearing 71 and passes through the resistance motor 2 and is transmission-connected with the rotating shaft 11 of the resistance motor 2; the pedal 12 is detachably installed at both ends of the rotating shaft 11 by threaded connection, and the power module 3 can be a battery installed on the supporting frame body 1.

[0025] In actual use: the power module 3 supplies power to the stator unit 21 so that the coil of the stator unit 21 generates a magnetic field. At this time, the magnetic field of the rotor unit 22 interacts with the magnetic field of the stator unit 21, thereby generating a force that attempts to rotate the outer shell 221 of the rotor unit 22. In the absence of external force, this force will cause the outer shell 221 to rotate in a certain direction (counterclockwise in this embodiment). However, since the outer shell 221 is connected to the rotating shaft 11 by transmission, the rider drives the rotating shaft 11 to rotate clockwise by stepping on the pedal 12, thereby driving the outer shell 221 to rotate clockwise to counteract the rotation force. This counteraction makes the rider feel the pedaling resistance, so the rider needs to step on the pedal 12 more forcefully to overcome this resistance, thereby helping the rider achieve a fitness effect.

[0026] The resistance adjustment unit can change the magnetic field strength generated by the stator unit 21 by adjusting the current supplied by the power module 3 to the resistance motor 2. The greater the magnetic field strength, the greater the rotational force of the outer shell 221, causing the rider to pedal with greater force, thereby achieving dynamic adjustment of the riding resistance.

[0027] Specifically, the fitness bike further includes a speed reduction mechanism 4 disposed on the carrier body 1, and the rotating shaft 11 is transmission-connected to the outer shell 221 of the rotor unit 22 via the speed reduction mechanism 4. The speed reduction mechanism 4 is introduced into the fitness bike mainly to extend the time interval of each rotation of the outer shell 221 relative to the stator unit 21 by reducing the rotation speed of the outer shell 221 when the rider steps on the pedal 12 (i.e., reducing the "frustration" caused by the torque fluctuation or speed fluctuation caused by the speed change).

[0028] This design can also bring the following benefits: first, it increases the duration of resistance felt by the rider, making the exercise effect more obvious; second, it reduces the wear of the motor and transmission system and increases the service life of the equipment; third, it allows greater riding resistance at a lower motor speed, thereby optimizing the motor's energy consumption and efficiency.

[0029] Specifically, the reduction mechanism 4 includes an inner ring gear 41 fixedly mounted on the carrier body 1, a sun gear 43 transmission-connected to the rotating shaft 11, a planetary gear 42 meshing between the inner ring gear 41 and the sun gear 43, and a planetary carrier 44 rotatably arranged on the rotating shaft 11, a transmission rod 45 is provided on the planetary carrier 44, the planetary gear 42 is rotatably arranged on the transmission rod 45 via a bearing 71, one end of the transmission rod 45 is arranged on the planetary carrier 44, the other end of the transmission rod 45 passes through the planetary gear 42 and is fixedly connected to the outer shell 221, and the planetary gear 42 is rotatably arranged on the transmission rod 45; the rotating rotating shaft 11 drives the planetary gear 42 to rotate via the sun gear 43, and the rotating planetary gear 42 drives the outer shell 221 to rotate relative to each other via the planetary carrier 44.

[0030] The rider drives the rotating shaft 11 to rotate by stepping on the pedals 12. When the sun gear 43 rotates, the teeth on it mesh with the planetary gear 42, driving the planetary gear 42 to revolve around the sun gear 43. At the same time, the planetary gear 42 also rotates on the transmission rod 45 through the bearing 71 inside it to maintain continuous meshing with the inner gear ring 41. The planetary gear 42 is installed on the planetary carrier 44 through the transmission rod 45, and the planetary carrier 44 is rotatably set on the rotating shaft 11. In this way, when the planetary gear 42 revolves, the planetary carrier 44 will also rotate. One end of the transmission rod 45 passes through the planetary gear 42 and rotates with the planetary gear 42 (that is, the planetary gear 42 rotates on the transmission rod 45), and the other end is fixedly connected to the outer shell 221. Therefore, the rotation of the planetary carrier 44 will drive the outer shell 221 to rotate together.

[0031] Specifically, the number of the planetary gears 42 is three, and the three planetary gears 42 are arranged around the rotation axis of the sun gear 43. Since the planetary gears 42 simultaneously revolve around the sun gear 43 and rotate on their own axes, and the number of the planetary gears 42 is three, this compound motion makes the rotation speed of the outer shell 221 much lower than the rotation speed of the rotating shaft 11, thereby achieving a deceleration effect. The deceleration ratio depends on the gear ratio of the sun gear 43, the planetary gears 42 and the inner gear ring 41. In actual use, the deceleration ratio is changed by changing the gear ratio of the sun gear 43, the planetary gears 42 and the inner gear ring 41. By reducing the rotation speed of the outer shell 221, the time interval of each rotation of the outer shell 221 relative to the stator unit 21 is extended, so that the resistance change felt by the rider is smoother, and the sense of frustration that may be caused by rapid changes in rotation speed is reduced.

[0032] In this embodiment, the sun gear 43 is connected to the rotating shaft 11 through a wedge overrunning clutch (not shown in the figure), and the wedge overrunning clutch has an inner ring connected to the rotating shaft 11, an outer ring connected to the sun gear 43, and a special-shaped wedge located between the inner ring and the outer ring. When the rotation direction of the inner ring and the rotating shaft 11 is the same as the potential rotation direction of the outer ring and the sun gear 43, and the speed of the inner ring is greater than that of the outer ring, the special-shaped wedge is pressed by the inner ring and the outer ring to transmit torque, and the fitness bike is in a normal riding state; at this time, the user steps on the pedal 12 to drive the rotating shaft 11 to rotate, and the rotation of the rotating shaft 11 is transmitted to the sun gear 43 through the wedge overrunning clutch, and then the sun gear 43 drives the planet carrier 44 to rotate in conjunction with the outer shell 221, so that the outer shell 221 rotates relative to the stator unit 21.

[0033] When the rotation direction of the inner ring and the rotating shaft 11 changes (the user steps on the pedal 12 in reverse) or the rotation speed decreases to a level lower than that of the outer ring and the sun gear 43 (the speed at which the user steps on the pedal 12 decreases), the friction between the inner and outer rings of the special-shaped wedge block is insufficient to maintain its compression state. At this time, the special-shaped wedge block will slide relative to the inner and outer rings to achieve the overtaking function, that is, the rotation of the inner ring will not drive the outer ring to rotate (the rotating shaft 112 will not drive the sun gear 43 to rotate). At this time, the fitness bike is not in a normal riding state. Allowing the rotating shaft 11 to rotate freely relative to the sun gear 43 means that the rotating shaft 11 will produce idling. In this way, the speed reduction mechanism 4 and the outer shell 221 will not be affected by the reverse torque. By preventing the transmission of the reverse torque, the speed reduction mechanism 4, the resistance motor 2 and other components are effectively protected from damage. In addition, the user does not need to worry about the adverse effects of the reverse pedal 12 on the equipment, which enhances the freedom and safety of riding.

[0034] Specifically, the resistance adjustment unit includes a control system connected to the power module 3 and a touch screen 5 connected to the control system and arranged on the carrier body 1. The rider adjusts the current output from the power module 3 to the resistance motor 2 through the touch screen 5, thereby adjusting the riding resistance. In actual use, the power module 3 serves as the energy source of the entire system, and the power module 3 is responsible for providing the required electrical energy to the resistance motor 2. It can be a direct current obtained by rectifying a direct current power supply or an alternating current power supply, depending on the type of the resistance motor 2 and the design requirements of the fitness bike. The control system is the core of the resistance adjustment unit, which receives instructions from the touch screen 5 and controls the current output from the power module 3 to the resistance motor 2 according to these instructions.

[0035] The control system consists of a microprocessor (such as a single-chip microcomputer, DSP, etc.), a drive circuit and necessary interface circuits. At the same time, the control system is programmed with corresponding software programs to control the power module 3 and the resistance motor 2. The software program includes functional modules such as touch screen 5 interface design, instruction parsing, current calculation, and drive control. The touch screen 5 serves as a human-computer interaction interface, allowing the rider to intuitively input instructions for adjusting resistance. The touch screen 5 displays information such as the current resistance level, riding time, and calorie consumption, and is provided with buttons or sliders for increasing resistance, reducing resistance, and setting a specific resistance level.

[0036] In actual use, a pedaling frequency sensor can be installed on the rotating shaft 11, and the pedaling frequency sensor and the control system can be connected, or the rider can wear a heart rate monitoring device by himself, and use wireless communication technology (such as Bluetooth, WIFI, etc.) to connect the heart rate monitoring device and the control system. The control system automatically adjusts the resistance size according to the rider's heart rate, pedaling frequency and other indicators to make the exercise more scientific and effective. A variety of riding modes (such as mountain mode, road mode, climbing mode, etc.) can also be designed through the control system, and each mode corresponds to a different resistance curve and riding experience. Riders can choose a riding mode suitable for them through the touch screen 5 for exercise. In addition, Bluetooth is used in the present embodiment to achieve data synchronization and remote control between the touch screen 5 and the mobile phone APP. Riders can view riding data, share exercise results or participate in online competitions and other activities through the mobile phone APP.

[0037] Specifically, the stator unit 21 includes a stator core 211 fixedly mounted on the carrier body 1 and a coil winding 212 arranged on the stator core 211. The output end of the power module 3 is electrically connected to the input end of the coil winding 212 to supply current to the coil winding 212 so that it generates a magnetic field. The outer shell 221 is arranged in a disc shape and covers the coil winding 212. The inner side of the outer shell 221 is provided with a magnetic part 222 (which can be a permanent magnet or an electromagnet) used in conjunction with the magnetic field generated by the energized coil winding 212. The stator core 211 is fixedly mounted on the carrier body 1, and it provides a skeleton for the coil winding 212 to be wound. The coil winding 212 is wound by an insulated wire and is tightly wound on the stator core 211. When the power module 3 supplies current to the coil winding 212, according to the principle of electromagnetic induction, the coil winding 212 will generate a magnetic field that interacts with the magnetic part 222 to generate the rotational force.

[0038] The resistance motor 2 of this embodiment adopts an external motor, so that the noise generated during operation is relatively small, providing a quieter and more comfortable exercise environment for the rider. This is especially important for family fitness, so as to avoid disturbing other family members or neighbors.

[0039] Specifically, the support frame body 1 includes a base frame 6, a first support frame 61 and a second support frame 62 arranged on the base frame 6. The base frame 6 is used to be placed on the support surface of an external support object. The first support frame 61 is arranged vertically relative to the base frame 6, and the second support frame 62 is arranged obliquely relative to the first support frame 61. The first support frame 61 is provided with a handlebar assembly 611 for the rider to hold, and the second support frame 62 is provided with a seat cushion 621 for the rider. The base frame 6, as the foundation of the entire fitness bike, is responsible for placing the bike firmly on the ground or other support objects to ensure that it will not shake or tilt during riding. The first support frame 61 is arranged vertically relative to the base frame 6, and is mainly used to support the handlebar assembly 611 to withstand the rider's upper limb strength and torque during operation. The second support frame 62 is arranged obliquely relative to the first support frame 61, and its main function is to carry the seat cushion 621 to provide a comfortable sitting posture for the rider. The inclined design helps the rider maintain a correct riding posture, reduces the pressure on the back and buttocks, and also helps to improve the exercise effect.

[0040] Specifically, the second carrier 62 is telescopically provided with a first telescopic rod 620, the seat cushion 621 is detachably mounted on the first telescopic rod 620, and the second carrier 62 is provided with a first knob 622 for adjusting the telescopic travel of the first telescopic rod 620. In this embodiment, the second carrier 62 is a hollow tube, the first telescopic rod 620 is slidably arranged in the second carrier 62, a plurality of protrusions are arranged on the side wall of the first telescopic rod 620, the protrusions are telescopically matched with the first telescopic rod 620 through springs, a plurality of through holes for accommodating the protrusions are arranged on the side wall of the second carrier 62, a bolt is arranged on the first knob 622, the bolt passes through the second carrier 62 to be threadedly matched therewith and abuts against the first telescopic rod 620 located in the second carrier 62 to achieve locking.

[0041] When in use, the first telescopic rod 620 is reciprocated to make the protrusion and the through hole engage and cooperate, so as to realize the telescopic adjustment of the seat 621, so as to adapt to riders of different heights and increase the applicability of the fitness bike. The addition of the first knob 622 makes the connection between the two more stable. The stability of the rider when riding is guaranteed. In this embodiment, the handlebar assembly 611 is provided with a second telescopic rod 610, and the second telescopic rod 610 is telescopically arranged relative to the first carrier frame 61, and the telescopic structure of the two is the same as the telescopic structure of the first telescopic rod 620 and the second carrier frame 62. The seat 621 and the handlebar assembly 611 adopt the same mechanism to achieve relative telescopicity, which simplifies the manufacturing and assembly costs.

[0042] Specifically, the fitness bike also includes a load bracket 7 detachably connected to the carrier body 1, the load bracket 7 is arranged in a "U" shape, the resistance motor 2 and the speed reduction mechanism 4 are both arranged on the load bracket 7, and the rotating shaft 11 passes through the resistance motor 2 and the speed reduction mechanism 4 and rotates with the load bracket 7 via the bearing 71. The core mechanism of the fitness bike, the resistance motor 2 and the speed reduction mechanism 4, are integrated on the load bracket 7, so that the structure of the whole bike is more compact and reasonable. The load bracket 7 is detachably connected to the carrier body 1 by bolts, which is convenient for users to disassemble and install according to their needs, and it is also convenient to repair or replace the resistance motor 2 and the speed reduction mechanism 4.

[0043] Specifically, the support frame 1 is provided with a first cover shell 8, the first cover shell 8 has a housing space for accommodating the speed reduction mechanism 4 and the resistance motor 2, the inner gear ring 41 is fixedly mounted on the inner wall of the first cover shell 8, and the inner wall of the first cover shell 8 is provided with a sound insulation layer, the sound insulation layer and the first cover shell 8 are detachably mounted, and the sound insulation layer is made of sound-absorbing material (such as porous sound-absorbing cotton, glass wool, polyester fiber, etc.), and the sound insulation layer is used to reduce the mechanical noise generated by the speed reduction mechanism 4 and the resistance motor 2. The application of the sound insulation layer can significantly reduce the mechanical noise generated by the speed reduction mechanism 4 and the resistance motor 2, and improve the user's comfort. By adding the sound insulation layer design, the fitness bike performs well in noise control, and the user can enjoy a quieter and more comfortable environment during riding, which helps to improve the exercise effect and experience.

[0044] Specifically, the chassis 6 is arranged in an "I"-shaped structure, and two rollers 63 are arranged at one end of the chassis 6 to facilitate adjustment of the position of the fitness bike. The chassis 6 in the "I"-shaped structure can evenly distribute the weight of the fitness bike and the rider carried by it, ensuring the stability of the rider during exercise. A plurality of silicone anti-skid pads 64 are also arranged around the chassis 6. In addition, the "I"-shaped chassis 6 structure is used in combination to improve the safety and reliability during riding exercise.

[0045] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The content of this specification should not be understood as limiting the present invention.

Claims

1. A motor resistance type fitness bicycle, comprising a supporting frame (1), a rotating shaft (11) rotatably arranged on the supporting frame (1), and a pedal (12) connected to the rotating shaft (11), wherein a rider drives the rotating shaft (11) to rotate relative to the supporting frame (1) via the pedal (12); characterized in that: The invention also comprises a resistance motor (2), a power module (3) and a resistance adjustment unit; the resistance motor (2) comprises a stator unit (21) and a rotor unit (22); the rotor unit (22) has an outer shell (221) drivingly connected to the rotating shaft (11); the power module (3) is used to supply power to the stator unit (21) so that it generates a magnetic field to drive the rotor unit (22) to generate a rotational force; the direction of rotation of the rotating shaft (11) driven by the rider is opposite to the direction of the rotational force generated by the rotor unit (22) driven by the magnetic field; the resistance adjustment unit is connected between the power module (3) and the resistance motor (2) to adjust the magnitude of the current supplied by the power module (3) to the resistance motor (2) and thereby adjust the magnitude of the riding resistance of the fitness bike.

2. The motor resistance type fitness bicycle according to claim 1, characterized in that: The spinning bike further comprises a speed reduction mechanism (4) arranged on the carrier body (1); the rotating shaft (11) is drivingly connected to the outer shell (221) of the rotor unit (22) via the speed reduction mechanism (4); the speed reduction mechanism (4) is used to reduce the rotation speed of the outer shell (221) so as to prolong the time interval of each rotation of the outer shell (221) relative to the stator unit (21).

3. The motor resistance type fitness bicycle according to claim 2, characterized in that: The reduction mechanism (4) is a planetary reducer, comprising an inner gear ring (41) fixedly mounted on the carrier body (1), a sun gear (43) drivingly connected to the rotating shaft (11), a planetary gear (42) meshing between the inner gear ring (41) and the sun gear (43), and a planetary carrier (44) rotatably arranged on the rotating shaft (11); a transmission rod (45) is arranged on the planetary carrier (44); the planetary gear (42) is rotatably arranged on the transmission rod (45); one end of the transmission rod (45) is arranged on the planetary carrier (44); the other end of the transmission rod (45) passes through the planetary gear (42) and is fixedly connected to the outer shell (221); the planetary gear (42) is rotatably arranged on the transmission rod (45); the rotating rotating shaft (11) drives the planetary gear (42) to rotate via the sun gear (43); the rotating planetary gear (42) drives the outer shell (221) to rotate relatively via the planetary carrier (44).

4. The motor resistance type fitness bicycle according to claim 3, characterized in that: There are multiple planetary gears (42), and the multiple planetary gears (42) are arranged around the rotation axis of the sun gear (43).

5. The motor resistance type fitness bicycle according to claim 1, characterized in that: The resistance adjustment unit comprises a control system connected to a power module (3) and a touch screen (5) arranged on a carrier body (1) and connected to the control system. The rider controls the magnitude of the current output from the power module (3) to the resistance motor (2) via the touch screen (5) to adjust the magnitude of the riding resistance of the fitness bike.

6. The motor resistance type fitness bicycle according to claim 1, characterized in that: The stator unit (21) comprises a stator core (211) fixedly mounted on a carrier body (1) and a coil winding (212) arranged on the stator core (211); a power module (3) is electrically connected to the coil winding (212) for supplying current to the coil winding (212) so that the coil winding (212) generates a magnetic field; the outer shell (221) is arranged in a disc shape and covers the coil winding (212); a magnetic part (222) is arranged on the inner side of the outer shell (221) for use in conjunction with a magnetic field generated by the energized coil winding (212).

7. The motor resistance type fitness bicycle according to claim 1, characterized in that: The support frame body (1) comprises a base frame (6), a first support frame (61) and a second support frame (62) arranged on the base frame (6); the base frame (6) is used to be placed on a support surface of an external support object; the first support frame (61) is vertically arranged relative to the base frame (6), and the second support frame (62) is inclined relative to the first support frame (61); a handlebar assembly (611) for a rider to hold is arranged on the first support frame (61), and a seat cushion (621) for carrying a rider is arranged on the second support frame (62).

8. The motor resistance type fitness bicycle according to claim 7, characterized in that: The second bearing frame (62) is telescopically provided with a first telescopic rod (620), the seat cushion (621) is detachably mounted on the first telescopic rod (620), and the second bearing frame (62) is provided with a first knob (622) for adjusting the telescopic travel of the first telescopic rod (620).

9. The motor resistance type fitness bicycle according to claim 2, characterized in that: The spinning bike further comprises a load bracket (7) detachably connected to the carrier body (1); the resistance motor (2) and the speed reduction mechanism (4) are both arranged on the load bracket (7); the rotating shaft (11) passes through the resistance motor (2) and the speed reduction mechanism (4) and is rotatably matched with the load bracket (7) via a bearing (71).

10. The motor resistance type fitness bicycle according to claim 2, characterized in that: The support frame (1) is provided with a first cover shell (8), the first cover shell (8) having an accommodation space for accommodating the speed reduction mechanism (4) and the resistance motor (2), and the inner wall of the first cover shell (8) is provided with a sound insulation layer, the sound insulation layer is made of a sound absorbing material, and the sound insulation layer is used to reduce the mechanical noise generated by the speed reduction mechanism (4) and the resistance motor (2).

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