A steerable exercise bike

Abstract

This invention relates to the field of fitness equipment technology, specifically disclosing a steerable exercise bike. The steerable exercise bike includes a base and a frame. The frame is rotatably fixed to the base, and a stand, drive wheel, and yaw frame are rotatably mounted on the frame. A handlebar is rotatably mounted in the stand, with a handlebar assembly fixed to its upper end. The lower end of the handlebar is connected to the yaw frame via a linkage mechanism, allowing adjustment of the yaw angle using the handlebar assembly. A driven shaft is rotatably mounted on the yaw frame, with a driven wheel and an inertia wheel mounted on the driven shaft. A one-way drive mechanism is provided between the driven wheel and the driven shaft, and the driven wheel is connected to the drive wheel via a belt drive. Twisting the handlebar assembly during riding turns the bike, and the turning process is unaffected by pedaling, highly simulating the turning effect of outdoor cornering, significantly enhancing the immersive riding experience and the enjoyment of the exercise. The bike's direction is adjustable, adapting to diverse scenarios such as watching movies, exercising, enjoying views from a window, and socializing.

Description

Technical Field

[0001] This invention relates to the field of fitness equipment technology, and in particular to a steerable exercise bike. Background Technology

[0002] Indoor exercise bikes are commonly used fitness equipment for indoor aerobic exercise, widely applied in home and commercial fitness settings. Existing conventional indoor exercise bikes generally employ a fixed design, with no horizontal rotational freedom relative to the ground. During riding, the bike maintains a fixed orientation, making overall horizontal steering adjustment impossible. On one hand, this fixed design fails to simulate the experience of cornering and changing direction during outdoor cycling, resulting in insufficient motion simulation and limiting the fun and immersive exercise experience. On the other hand, the fixed and unadjustable orientation makes it difficult to adapt to the diverse orientation adjustment needs of users in home environments, such as watching movies while exercising, enjoying views from windows, or engaging in interpersonal communication during exercise. This indicates significant shortcomings in product adaptability and user experience.

[0003] While some existing technologies have disclosed design solutions for exercise bikes with turning and steering functions, these solutions are mostly limited to the rotating structure of the handlebars. The bike body cannot rotate horizontally in sync with the handlebar control, failing to fundamentally address the core technical challenges of adjustable bike orientation and simulated cornering riding experience. These structural design limitations result in poor practical performance, hindering market penetration and large-scale promotion. Summary of the Invention

[0004] In view of the shortcomings of existing technologies, the present invention aims to provide a steerable exercise bike to solve the technical problems of low simulation, poor immersion, and weak scene adaptability of traditional fixed exercise bikes, as well as the structural limitations and poor steering experience of existing steering solutions.

[0005] To achieve the above technical objectives, the present invention adopts the following technical solution: A steerable exercise bike includes a base and a frame; the frame is equipped with a seat assembly, handlebar assembly, drive wheel, pedal assembly, and inertia wheel; a rotary disc is rotatably mounted on the upper end of the base, and the axis of rotation of the rotary disc is vertically arranged; the frame is fixed to the upper side of the rotary disc, and a stand is fixedly mounted at the front of the frame, in which a handlebar is rotatably mounted, and the handlebar assembly is fixedly connected to the upper end of the handlebar; a swerve frame is rotatably mounted on the frame, and the axes of rotation of the swerve frame and the drive wheel are approximately perpendicularly intersecting, and the swerve frame is connected to the lower end of the handlebar via a linkage mechanism; a swerve for... The driving shaft and the driven shaft have their rotation axes roughly perpendicular to each other. The driven shaft is located in front of or behind the rotation axis of the turntable. A driven wheel is mounted on the driven shaft, and a one-way drive mechanism is installed between the driven wheel and the driven shaft. An inertia wheel is also fixedly mounted on the driven shaft. When the handlebar assembly is centered, the yaw frame is in its initial position, the driven shaft extends horizontally, and the drive wheel, belt, and driven wheel are in an open drive state. When the handlebar assembly is twisted during riding, the advance torque generated by the inertia wheel will drive the vehicle body to rotate horizontally, and the drive wheel, belt, and driven wheel switch to a semi-cross drive state. A reset mechanism is installed on the yaw frame.

[0006] In a preferred embodiment, the one-way drive mechanism is a ratchet mechanism or a one-way bearing.

[0007] In a preferred embodiment, a guide wheel is provided on the vehicle body corresponding to the belt running path to constrain the belt direction and ensure smooth transmission.

[0008] In a preferred embodiment, the vehicle body is equipped with a limiting mechanism to limit the maximum deflection angle of the deflection frame; when the deflection frame is in the initial position, its maximum deflection angle to the left and right is limited to 45° each.

[0009] In a preferred embodiment, the reset mechanism includes a support arm fixedly connected to the deflection frame and a counterweight fixed to the support arm. When the deflection frame is in the initial position, the counterweight is located below the rotation axis of the deflection frame, so that the center of gravity of the deflection frame and its auxiliary components falls directly below the rotation axis, thereby achieving gravity self-reset.

[0010] In a preferred embodiment, the deflection frame is a frame structure with hinges fixed at its front and rear ends, and the deflection frame is rotatably connected to the vehicle body through the two hinges; the driven shaft is rotatably connected to the deflection frame at both ends, and the driven wheel and the inertia wheel are both housed inside the deflection frame.

[0011] In a preferred embodiment, the deflector is arranged in front of the drive wheel and below the handlebar; the linkage mechanism includes a first synchronous wheel and a second synchronous wheel, the first synchronous wheel is coaxially and fixedly connected to the lower end of the handlebar, the second synchronous wheel is coaxially and fixedly connected to the deflector, and a synchronous belt is wound between the first synchronous wheel and the second synchronous wheel to form a synchronous transmission pair.

[0012] In a preferred embodiment, the deflection frame is equipped with a resistance adjustment mechanism adapted to the inertia wheel to adjust the riding resistance during movement.

[0013] In a preferred embodiment, there are two inertia wheels, symmetrically arranged on both sides of the driven wheel and coaxially fixed on the driven shaft, so as to improve the symmetry of steering torque and running stability.

[0014] In a preferred embodiment, a telescopic tube is inserted into the upper end of the handlebar tube, and the handlebar assembly is fixedly installed on the top of the telescopic tube; a locking mechanism is provided on the handlebar tube for locking and adjusting the height of the telescopic tube.

[0015] In a preferred embodiment, the vehicle body is covered with a removable protective shell, and the drive wheel, driven wheel, belt, deflector frame and linkage mechanism are housed inside the protective shell, thereby improving product safety and appearance integration.

[0016] In a preferred embodiment, the vehicle body is a frame-type load-bearing structure formed by splicing metal tubing, which is made of carbon steel or aluminum alloy to balance structural strength and lightweight requirements.

[0017] Compared with the prior art, the steerable exercise bike of the present invention has the following beneficial technical effects: 1. Highly realistic steering experience: When riding, twisting the handlebar assembly generates a thrust torque from the gyro effect of the inertial wheel, which drives the entire vehicle to turn smoothly and continuously. The twist angle of the handlebar assembly is positively correlated with the turning speed of the vehicle. The turning process is independent of the pedaling action, which can highly simulate the steering characteristics of outdoor cornering riding, significantly enhancing the immersion and fun of riding.

[0018] 2. Strong adaptability to different scenarios: Relying on the vehicle's horizontal turning function, the vehicle's orientation can be quickly adjusted to adapt to diverse usage scenarios such as watching movies and exercising, sightseeing while riding, and sports communication. The product design is user-friendly and has a wider range of applications.

[0019] 3. Simple structure and easy mass production: The overall structure is reasonably designed and compactly laid out. The core transmission and functional components are highly compatible with traditional exercise bikes. Mass production and market promotion can be achieved without complex modifications. The implementation cost is low and the practicality is strong. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of the present invention, and are not intended to limit the present invention.

[0021] Figure 1 This is a schematic diagram of the overall structure of the steerable exercise bike in an embodiment of the present invention.

[0022] Figure 2 This is a schematic diagram of the vehicle body in an embodiment of the present invention.

[0023] Figure 3 This is a schematic diagram of the vehicle body in another direction according to an embodiment of the present invention.

[0024] Figure 4 This is a schematic diagram of the assembly structure of the vehicle body, deflector frame, and handlebars in an embodiment of the present invention.

[0025] Figure 5 This is a schematic diagram of the cooperative structure of the driven shaft, driven wheel, inertia wheel and driving wheel in an embodiment of the present invention.

[0026] Figure 6 This is a schematic diagram showing the positional relationship between the deflector frame, driven shaft, and driving wheel in an embodiment of the present invention.

[0027] Figure 7 This is a schematic diagram of the vehicle body turning in an embodiment of the present invention.

[0028] Figure 8 This is a schematic diagram of the appearance of the vehicle body after being covered with a protective shell in an embodiment of the present invention.

[0029] Figure label: 1-Base; 2-Spinning plate; 3-Foot pedal assembly; 4-Drive wheel; 5-Seat assembly; 6-Belt; 7-Bike body; 8-Locking mechanism; 9-Handle assembly; 10-Display screen; 11-Telescopic tube; 12-Handle post; 13-Standing sleeve; 14-Inertia wheel; 15-Driven shaft; 16-Deflection frame; 17-Support arm; 18-Counterweight; 19-Resistance adjustment mechanism; 20-Driven wheel; 21-First synchronous pulley; 22-Guide wheel; 23-Synchronous belt; 24-Second synchronous pulley; 25-Hinge; 26-Limiting mechanism; 27-One-way drive mechanism; 28-Protective housing; 29-Deflection zone Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0031] See Figures 1-7As shown, this embodiment of the invention discloses a steerable exercise bike, including a base 1 and a bike body 7; the base 1 is placed on the ground to provide support for the bike body 7, and a turntable 2 is rotatably mounted on the upper end of the base 1, with the rotation axis of the turntable 2 being vertically set; the bike body 7 is fixedly installed on the upper side of the turntable 2, so that the bike body 7 can stably rotate horizontally under the action of external force.

[0032] The rear of the vehicle body 7 is equipped with a seat assembly 5 for the user to sit on. A cylindrical stand 13 is fixedly installed at the front of the vehicle body 7, and a vertically extending handlebar tube 12 is rotatably mounted in the stand 13. The upper end of the handlebar tube 12 extends out of the stand 13 and is fixedly installed with the handlebar assembly 9 for the user to hold while riding. The lower end of the handlebar tube 12 extends below the stand 13 to form a transmission connection end. According to the product's functional design requirements, functional components such as a display screen 10 and a control panel can be mounted on the handlebar assembly 9.

[0033] A drive wheel 4 is rotatably mounted on the vehicle body 7. The axis of rotation of the drive wheel 4 is horizontally arranged along the left-right direction of the vehicle body 7. Foot pedal assemblies 3 are fixedly installed on both sides of the drive wheel 4. The user can drive the drive wheel 4 to rotate by stepping on the foot pedal assemblies 3. A deflection frame 16 is also rotatably mounted on the vehicle body 7. The axis of rotation of the deflection frame 16 and the drive wheel 4 are approximately perpendicular to each other. The deflection frame 16 is connected to the lower end of the handlebar tube 12 through a linkage mechanism. When the handlebar assembly 9 is twisted in different directions, the handlebar tube 12 drives the deflection frame 16 to deflect in the corresponding direction through the linkage mechanism, thereby realizing the directional deflection adjustment of the deflection frame 16.

[0034] A driven shaft 15 is rotatably mounted on the deflection frame 16, with the rotation axes of the two shafts intersecting approximately perpendicularly. The driven shaft 15 is located in front of or behind the rotation axis of the rotary table 2, ensuring that the rotation axes of the driven shaft 15 and the rotary table 2 do not intersect. A driven wheel 20 is mounted on the driven shaft 15, and a one-way drive mechanism 27 is assembled between the driven wheel 20 and the driven shaft 15. The one-way drive mechanism 27 can be a ratchet mechanism or a one-way bearing. A belt 6 is wound around the driven wheel 20 and the driving wheel 4 to form a belt drive pair. When the user rides, the driving wheel 4 drives the driven wheel 20 to rotate through the belt 6, and drives the driven shaft 15 to rotate synchronously through the one-way drive mechanism 27. An inertia wheel 14 is also coaxially fixedly mounted on the driven shaft 15.

[0035] See Figure 1 , Figure 2 As shown, when the handlebar assembly 9 is in the centered position, the deflector 16 is in the initial position. At this time, the driven shaft 15 extends horizontally, and the drive wheel 4, belt 6 and driven wheel 20 are in an open transmission state. The transmission path is regular and the operation is smooth, so as to improve the transmission efficiency during normal straight riding and reduce unnecessary mechanical wear.

[0036] See Figure 7As shown, when the handlebar assembly 9 is twisted to one side during riding, the deflector 16 deflects from its initial position in the corresponding direction, causing the rotation axis of the inertia wheel 14 to tilt. The high-speed rotating inertia wheel 14 is equivalent to a gyro rigid body, which generates a stable precession torque based on the gyro effect, driving the vehicle body 7 to rotate horizontally in the direction of the twist of the handlebar assembly 9, thereby realizing the steering of the vehicle body 7.

[0037] See Figures 5-7 As shown, when the handlebar assembly 9 is twisted, the driven wheel 20 deflects with the deflector frame 16, and its relative position to the drive wheel 4 changes. Based on the configuration design where the rotation axes of the deflector frame 16 and the drive wheel 4 are perpendicularly intersected, and the rotation axes of the deflector frame 16 and the driven shaft 15 are perpendicularly intersected, the drive wheel 4, belt 6, and driven wheel 20 will smoothly switch from an open drive state to a semi-cross drive state, maintaining continuous power transmission and ensuring that the user can maintain the original pedaling rhythm during the turning process of the vehicle body 7. At the same time, since a one-way drive mechanism 27 is provided between the driven shaft 15 and the driven wheel 20, when the user stops pedaling, the inertia wheel 14 can still continue to rotate due to its own rotational inertia, so that the turning action of the vehicle body 7 is not constrained by the pedaling start and stop state. This ensures that the turning process of the vehicle body 7 and the pedaling state are independent of each other and do not interfere with each other, improving the sports experience.

[0038] The deflection frame 16 is equipped with a reset mechanism. When no external force is applied to the handlebar assembly 9, the reset mechanism can drive the deflection frame 16 to rotate back to the initial position, and at the same time, make the handlebar assembly 9 return to the center position. In addition, the reset mechanism can prevent the deflection frame 16 from deviating from the initial position without human control, and avoid the vehicle body 7 from turning unexpectedly during riding.

[0039] Based on the above design, the usage and working principle of the steerable exercise bike in this invention are as follows: See Figure 1 , Figure 2 , Figure 7As shown, during normal riding, the handlebar assembly 9 of this steerable exercise bike is positioned in the center, and its working principle and exercise experience are consistent with traditional products. When riding, twisting the handlebar assembly 9 generates a torque from the high-speed rotating inertia wheel 14, driving the entire bike to steer smoothly. The steering of the bike body 7 continues until the handlebar assembly 9 returns to center. The greater the twist angle of the handlebar assembly 9, the greater the deflection angle of the rotation axis of the inertia wheel 14, resulting in a corresponding increase in the torque generated. The steering speed of the bike body 7 increases linearly, and the handling feel is natural and conforms to real riding habits. The steering process of the bike body 7 is completed collaboratively by the torsional torque of the handlebar assembly 9 and the gyroscopic effect of the inertia wheel 14, unaffected by the user's continuous or paused pedaling movements. It can highly simulate the steering effect of outdoor cornering riding, significantly enhancing the riding immersion and the fun of the exercise. During use, the direction of the bike body 7 can be adjusted using the steering function according to actual needs, adapting to diverse usage scenarios such as watching movies and exercising, riding while enjoying scenery, and engaging in sports communication. Operation is convenient and quick.

[0040] Based on the aforementioned structural and kinematic pair relationships, those skilled in the art can, through conventional selection and matching adjustments of parameters such as the model specifications and installation layout of the driving pulley 4, belt 6, driven pulley 20, inertia pulley 14, and deflection frame 16, as well as the counterweight mass of inertia pulley 14 and the deflection angle range of deflection frame 16, achieve the following stable technical operating conditions without requiring creative structural design, thereby improving the overall vehicle operating stability and comprehensive performance, as follows: 1) The deflection frame 16 has no mechanical interference with the belt drive path during its entire deflection motion, and all moving parts operate smoothly.

[0041] 2) The transmission pair consisting of the driving wheel 4, the driven wheel 20 and the belt 6 can be smoothly switched between open transmission and semi-cross transmission, and both transmission modes are stable and reliable in terms of load bearing.

[0042] 3) Under normal riding control, the advance torque generated by the inertia wheel 14 is sufficient to drive the vehicle body 7 to rotate smoothly when carrying a passenger, so as to meet the usage needs of most adult users.

[0043] In a further embodiment, a guide wheel is provided on the vehicle body 7 corresponding to the running path of the belt 6. The guide wheel is used to constrain and adapt to the direction of the belt 6, adapt to the relative position changes of the driving wheel 4 and the driven wheel 20, further improve the smoothness of switching between open drive and semi-cross drive, and effectively avoid the occurrence of belt 6 running off track, abnormal noise and abnormal wear.

[0044] See Figure 4 , Figure 5As shown, in a further embodiment, the vehicle body 7 is equipped with a limiting mechanism 26. The limiting mechanism 26 can be installed on components such as the handlebar assembly 9, handlebar stem 12, or deflector frame 16 to limit the maximum deflection angle of the deflector frame 16. This prevents excessive deflection angle of the deflector frame 16 from causing interference with the belt 6 and transmission components, and also avoids excessive torsional angle of the handlebar assembly 9, which would affect the normal riding experience. As a preferred parameter setting, when the deflector frame 16 is in its initial position, the maximum deflection angle to the left and right is limited to 45° on each side.

[0045] In this invention, a reset mechanism is used to drive the deflector frame 16 back to its initial position. The reset mechanism can be configured as an elastic reset element such as a tension spring or spring. One end of the elastic reset element is fixedly connected to the vehicle body 7, and the other end is fixedly connected to the deflector frame 16. The elastic reset element drives the deflector frame 16 back to its initial position by its elastic force. As a preferred embodiment, the reset mechanism adopts a gravity reset structure, specifically: See Figures 1-4 As shown, the reset mechanism includes a support arm 17 and a counterweight 18. The support arm 17 is fixedly connected to the deflection frame 16, and the counterweight 18 is fixed on the support arm 17, away from the rotation axis of the deflection frame 16. When the deflection frame 16 is in the initial position, the counterweight 18 is located below the rotation axis of the deflection frame 16, so that the center of gravity of the deflection frame 16 and its auxiliary components falls directly below the rotation axis, realizing gravity self-reset. The structure is simple, maintenance-free, and has no motion interference.

[0046] See Figures 2-4 As shown, in a further embodiment, the deflection frame 16 adopts a frame structure. Hinges 25 are fixed at both the front and rear ends of the deflection frame 16, with the central axes of the two hinges 25 coinciding. The deflection frame 16 is rotatably connected to the vehicle body 7 through the two hinges 25, effectively improving the overall structural rigidity, load-bearing capacity, and rotational stability of the deflection frame 16. Simultaneously, both ends of the driven shaft 15 are rotatably connected to the deflection frame 16, and both the driven wheel 20 and the inertia wheel 14 are housed inside the deflection frame 16, resulting in a compact structural layout and higher transmission stability.

[0047] In this invention, the deflector frame 16 and the handle tube 12 are connected by a linkage mechanism. Since the relative positions of the rotation axes of the deflector frame 16 and the handle tube 12 are fixed, the linkage mechanism can use conventional transmission methods such as gear transmission, linkage transmission, or flexible component transmission to achieve angular linkage between the deflector frame 16 and the handle tube 12. As a preferred embodiment: See Figures 2-4As shown, the deflector 16 is arranged in front of the drive wheel 4 and below the handlebar 12; the linkage mechanism includes a first synchronous wheel 21 and a second synchronous wheel 24. The first synchronous wheel 21 is coaxially and fixedly connected to the lower end of the handlebar 12, and the second synchronous wheel 24 is coaxially and fixedly connected to the deflector 16. A synchronous belt 23 is wound between the first synchronous wheel 21 and the second synchronous wheel 24 to form a synchronous transmission pair; according to the spatial layout requirements of the first synchronous wheel 21 and the second synchronous wheel 24, a guide wheel 22 can be set on the vehicle body 7 to limit and guide the direction of the synchronous belt 23, so as to ensure accurate corner transmission and smooth operation.

[0048] See Figures 2-4 As shown, in a further embodiment, the deflection frame 16 is equipped with a resistance adjustment mechanism 19 adapted to the inertia wheel 14. The resistance adjustment mechanism 19 is an electromagnetic resistance adjuster or a friction resistance adjuster. Since the resistance adjustment mechanism 19 is supported by the deflection frame 16, it can always maintain a stable cooperation with the inertia wheel 14, realizing stepless adjustment of cycling resistance to adapt to different intensity fitness needs.

[0049] See Figure 2 , Figure 3 , Figure 5 , Figure 6 As shown, in a further embodiment, there are two inertia wheels 14, which are symmetrically arranged on both sides of the driven wheel 20 and coaxially fixed on the driven shaft 15; a safety clearance is reserved between the two inertia wheels 14 to avoid structural interference with the belt 6 and surrounding components; the arrangement of the two inertia wheels 14 can improve the force balance of the whole vehicle, and make the left and right steering torques symmetrical and equivalent, the steering feel consistent, and improve the user experience.

[0050] See Figures 1-3 As shown, in a further embodiment, a telescopic tube 11 is inserted and fitted at the upper end of the handlebar tube 12, and the handlebar assembly 9 is fixedly installed at the top of the telescopic tube 11; a locking mechanism 8 is configured on the handlebar tube 12 for locking the telescopic tube 11, and the telescopic tube 11 can be adjusted by loosening the locking mechanism 8, so as to realize stepless adjustment of the height of the handlebar assembly 9 to adapt to the riding habits of different users.

[0051] See Figure 8 As shown, in a further embodiment, the vehicle body 7 is externally covered by a detachable protective shell 28. The drive wheel 4, driven wheel 20, belt 6, deflector frame 16, and linkage mechanism are housed inside the protective shell 28. Only the pedal assembly 3 penetrates the side wall of the protective shell 28 and is exposed to the outside for the user to step on while riding. The protective shell 28 is provided with a deflection area 29 for the deflector frame 16. The deflection area 29 has sufficient space for the inertia wheel 14 to deflect with the deflector frame 16. The protective shell 28 can improve the overall stability and safety of the vehicle and significantly improve the overall appearance of the vehicle.

[0052] See Figure 1 , Figure 2 As shown, in a further embodiment, the vehicle body 7 is a frame-type load-bearing structure formed by splicing metal pipes. The metal pipes are preferably made of high-strength carbon steel or aluminum alloy. The pipes are fixedly connected by welding, bolting, or tenoning to form a stable, integrated load-bearing frame. In specific implementation, based on the stress requirements of various parts of the vehicle body 7, the diameter, wall thickness, and arrangement of the metal pipes are rationally designed. While ensuring the overall structural strength, rigidity, and load-bearing capacity of the vehicle body 7, the overall vehicle weight is reduced as much as possible to achieve lightweight design.

Claims

1. A steerable exercise bicycle, comprising a base and a frame; the frame is equipped with a seat assembly, a handlebar assembly, a drive wheel, a pedal assembly, and an inertia wheel; characterized in that: A turntable is rotatably mounted on the upper end of the base, with its rotation axis vertically aligned. The vehicle body is fixed to the upper side of the turntable, and a vertical sleeve is fixed to the front of the vehicle body. A handlebar is rotatably mounted within the vertical sleeve, and the handlebar assembly is fixedly connected to the upper end of the handlebar. A deflector is rotatably mounted on the vehicle body, with its rotation axis intersecting the drive wheel approximately perpendicularly. The deflector is connected to the lower end of the handlebar via a linkage mechanism. A driven shaft is rotatably mounted on the deflector, with its rotation axis intersecting the drive wheel approximately perpendicularly. The driven shaft is located at the point where the turntable rotates. The shaft is positioned in front of or behind the axis; a driven wheel is mounted on the driven shaft, and a one-way drive mechanism is installed between the driven wheel and the driven shaft. An inertia wheel is also fixedly mounted on the driven shaft; when the handlebar assembly is centered, the yaw frame is in its initial position, the driven shaft extends horizontally, and the drive wheel, belt, and driven wheel are in an open drive state; when the handlebar assembly is twisted during riding, the advance torque generated by the inertia wheel will drive the vehicle body to rotate horizontally, and the drive wheel, belt, and driven wheel will switch to a semi-cross drive state; a reset mechanism is installed on the yaw frame.

2. The steerable exercise bike according to claim 1, characterized in that: The unidirectional drive mechanism adopts a ratchet mechanism or a unidirectional bearing.

3. The steerable exercise bike according to claim 1, characterized in that: The vehicle body is equipped with a limiting mechanism to limit the deflection angle of the deflection frame; when the deflection frame is in the initial position, its maximum deflection angle to the left and right is limited to 45°.

4. The steerable exercise bike according to claim 1, characterized in that: The reset mechanism includes a support arm fixedly connected to the deflection frame and a counterweight fixed on the support arm. When the deflection frame is in the initial position, the counterweight is located below the rotation axis of the deflection frame, so that the center of gravity of the deflection frame and its auxiliary components is directly below the rotation axis.

5. The steerable exercise bike according to claim 1, characterized in that: The deflection frame is a frame structure with hinges fixed at its front and rear ends. The deflection frame is rotatably connected to the vehicle body through the two hinges. The driven shaft is rotatably connected to the deflection frame at both ends. The driven wheel and the inertia wheel are both housed inside the deflection frame.

6. The steerable exercise bike according to claim 1, characterized in that: The deflector is arranged in front of the drive wheel and below the handlebar; the linkage mechanism includes a first synchronous wheel and a second synchronous wheel. The first synchronous wheel is coaxially and fixedly connected to the lower end of the handlebar, and the second synchronous wheel is coaxially and fixedly connected to the deflector. A synchronous belt is wound between the first synchronous wheel and the second synchronous wheel to form a synchronous transmission pair.

7. The steerable exercise bike according to claim 1, characterized in that: The deflection frame is equipped with a resistance adjustment mechanism adapted to the inertia wheel.

8. The steerable exercise bike according to claim 1, characterized in that: The inertia wheel is provided in two parts, symmetrically arranged on both sides of the driven wheel and coaxially fixed on the driven shaft.

9. The steerable exercise bike according to claim 1, characterized in that: A telescopic tube is inserted into the upper end of the handlebar tube, and the handlebar assembly is fixedly installed on the top of the telescopic tube; a locking mechanism is provided on the handlebar tube.

10. The steerable exercise bike according to claim 1, characterized in that: The vehicle body is covered by a detachable protective shell, and the drive wheel, driven wheel, belt, deflector frame and linkage mechanism are housed inside the protective shell.

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