Flywheel adjusting structure of a fitness bicycle

By installing cleaning and protection components and a reset component on the exercise bike flywheel, the problem of flywheel jamming caused by magnets attracting metal objects is solved, achieving stable rotation and breathability of the flywheel, and preventing foreign objects from embedding and dust from clogging it.

CN224370564UActive Publication Date: 2026-06-19NINGBO BESTGYM FITNESS EQUIP CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NINGBO BESTGYM FITNESS EQUIP CO LTD
Filing Date
2025-05-27
Publication Date
2026-06-19

AI Technical Summary

Technical Problem

The exercise bike flywheel gets stuck and cannot rotate properly because the magnet attracts the wearer's metal objects, causing these objects to become embedded in the gap.

Method used

An exercise bike flywheel adjustment structure was designed, including a cleaning and protection component, a connecting component, and a reset component. The protective shell and breathable mesh prevent metal objects from adhering to the flywheel, and a small vacuum cleaner is used to clean dust, thus maintaining the stable rotation of the flywheel.

Benefits of technology

It effectively avoids the problem of flywheel jamming caused by metal objects adhering to it, ensuring stable flywheel rotation, and maintains the normal working condition of the flywheel through the ventilation mesh and vacuum cleaner, preventing high temperature and dust blockage.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a flywheel adjusting structure of a fitness bicycle, which comprises a flywheel adjusting structure main body, a cleaning protection assembly, a connecting assembly and a reset assembly. The cleaning protection assembly can protect the flywheel from being adsorbed by the strong magnetic block by the shell protection mode, and the stable rotation of the flywheel is provided. The flywheel can provide stable air permeability during high-speed rotation. When dust is attached to the surface of the air permeable net, the movable cleaning of the small vacuum cleaner is used to avoid the diffusion of dust during the cleaning process, so that the air permeable net is prevented from being blocked to cause the inharmonious gas flow. The reset assembly can reset the cleaned sliding block to the original position, thereby facilitating the next cleaning work.
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Description

Technical Field

[0001] This application relates to the field of fitness equipment technology, specifically to a flywheel adjustment structure for an exercise bike. Background Technology

[0002] The flywheel is one of the core components of an exercise bike. Its main function is to store and release energy, thereby providing smooth and continuous resistance. When you pedal, the flywheel begins to rotate, and due to inertia, it maintains the continuity of movement between each pedal stroke. This allows you to feel a more stable and smooth power output during exercise, avoiding discomfort caused by sudden changes in resistance.

[0003] When the user steps on the exercise bike pedals, the flywheel rotates. The magnet attracts the flywheel, creating magnetic resistance. The user must resist this resistance to achieve the desired exercise. Turning the adjustment knob pulls or releases the cable on the disc, causing the disc to shift axially relative to the flywheel. This changes the relative magnetic area between the magnet's magnetic surface and the inner ring of the recess, thus adjusting the magnetic resistance.

[0004] The gap between the magnet and the flywheel is usually small, about the clearance that allows the flywheel to rotate. When a metal object worn by a person falls and is attracted by the magnet, the foreign object may become embedded in the gap, causing it to jam and malfunction, preventing the flywheel from rotating normally. Utility Model Content

[0005] The purpose of this application is to provide a flywheel adjustment structure for an exercise bike to solve the problem mentioned in the background art, where when a metal object worn by a person falls and is attracted by a magnet, the foreign object becomes embedded in the gap, causing jamming and malfunction, resulting in the flywheel being unable to rotate normally.

[0006] To achieve the above objectives, this application provides the following technical solution: This utility model provides a flywheel adjustment structure for an exercise bike, comprising: a flywheel adjustment structure body, a cleaning and protection component, a connecting component, and a reset component. The flywheel adjustment structure body includes a support frame, a strong magnetic block disposed on the support frame, and a pulling displacement component disposed on one side of the strong magnetic block. The cleaning and protection component is disposed outside the strong magnetic block and includes a first protective shell disposed on one side of the strong magnetic block and a second protective shell disposed on the other side of the strong magnetic block. Holes are formed in the first and second protective shells. A breathable mesh is welded inside the holes in the first and second protective shells. A guide rod is welded to the outer wall of the first and second protective shells. A sliding block is slidably connected to the guide rod. A connecting pipe is connected at one end to the sliding block, and a small vacuum cleaner is connected to the other end of the connecting pipe. The connecting component is disposed on the outer wall of the first and second protective shells, and the reset component is disposed on the sliding block.

[0007] By adopting the above technical solution, it is possible to prevent external metal objects from being attracted by strong magnetic blocks, thereby affecting the normal rotation of the flywheel.

[0008] Preferably, the sliding block has an internal cavity, and one side of the outer wall of the sliding block has a hole for gas flow.

[0009] By adopting the above technical solution, a small vacuum cleaner can be provided to absorb the generated dust.

[0010] Preferably, the connecting assembly includes a connecting shaft located at the center of the outer walls of the first protective shell and the second protective shell, with one end of the shaft rotatably connected to two ends of the connecting shaft via a round rod.

[0011] By adopting the above technical solution, the C-shaped block can rotate on the connecting shaft via a round rod.

[0012] Preferably, the number of C-shaped blocks is two sets.

[0013] By adopting the above technical solutions, it is possible to connect to different structures.

[0014] Preferably, both ends of the two sets of connecting shafts are provided with sleeves, the sleeves are welded to the other end of the C-shaped block, and a fixed rod is slidably connected to the sleeve at one end.

[0015] By adopting the above technical solution, the fixed rods can be used to connect the structures.

[0016] Preferably, there are two sets of fixing rods, and the other ends of the two sets of fixing rods are respectively welded to the sliding blocks on the outside of the first protective shell and the second protective shell.

[0017] By adopting the above technical solution

[0018] Preferably, the reset assembly includes a positioning rod and a spring.

[0019] By adopting the above technical solution, the position of the connected sliding block can be changed by the spring.

[0020] Preferably, the reset assembly includes a positioning rod welded to the outer walls of the first protective shell and the second protective shell.

[0021] By adopting the above technical solution, an external spring can be provided to adhere to its outer wall.

[0022] Preferably, the number of springs is two sets, and one end of the two sets of springs is welded to the outer wall of the first protective shell and the second protective shell respectively, and the other end of the two sets of springs is welded to the sliding block.

[0023] By adopting the above technical solution, the spring can use its own elastic force to drive the sliding block to move.

[0024] Preferably, the spring is attached to the outside of the positioning rod.

[0025] By adopting the above technical solution, the spring can change its shape through the positioning rod.

[0026] In summary, this application includes at least one of the following beneficial effects:

[0027] (1) By setting up a cleaning protection component and a reset component, the cleaning protection component can prevent external metal objects from being attracted by strong magnetic blocks through the shell protection, and provide stable rotation of the flywheel. The ventilation mesh can provide stable air permeability during high-speed rotation of the flywheel. When dust adheres to the surface of the ventilation mesh, it can be cleaned by the mobile cleaning of a small vacuum cleaner, thereby preventing the dust from spreading during the cleaning process and preventing the ventilation mesh from becoming blocked and causing poor air flow. The reset component can reset the cleaning sliding block to its original position, thus facilitating the next cleaning work.

[0028] (2) By setting up a connecting component, a first protective shell and a second protective shell, the connecting component can connect the first protective shell and the second protective shell, thereby avoiding the phenomenon of separation and scattering of parts. During the installation of the first protective shell and the second protective shell, the first protective shell and the second protective shell are kept in a whole state through the connecting component. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural diagram of this application;

[0030] Figure 2 This is a schematic diagram of the three-dimensional unfolded structure of this application;

[0031] Figure 3 This is a three-dimensional structural diagram of the cleaning and protection component of this application.

[0032] In the diagram: 1. Support frame; 2. Strong magnetic block; 3. Pull displacement assembly; 4. Cleaning protection assembly; 401. Protective shell No. 1; 402. Protective shell No. 2; 403. Breathable mesh; 404. Guide rod; 405. Sliding block; 406. Connecting pipe; 407. Mini vacuum cleaner; 5. Connecting assembly; 501. Connecting shaft; 502. C-shaped block; 503. Sleeve; 504. Fixing rod; 6. Reset assembly; 601. Positioning rod; 602. Spring. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] The following is in conjunction with the appendix Figure 1-3 The embodiments of this application will be described in further detail.

[0035] Example 1

[0036] Please see Figures 1-3 This embodiment provides a technical solution: a flywheel adjustment structure for an exercise bike, comprising: a support frame 1, a strong magnet 2, a pulling displacement component 3, a cleaning and protection component 4, a connecting component 5, and a reset component 6;

[0037] The flywheel adjustment structure includes a support frame 1, a strong magnetic block 2 set on the support frame 1, and a pulling displacement component 3 set on one side of the strong magnetic block 2. The pulling displacement component 3 pulls or releases the disc body through a steel cable, causing the disc body to move relative to the flywheel along the wheel axis. The relative magnetic attraction area between the magnetic attraction surface of the magnet and the inner ring surface of the concave hole changes, thereby adjusting the magnetic resistance. The above is the prior art, and will not be described in detail below.

[0038] The cleaning and protection component 4 is located outside the strong magnetic block 2. The cleaning and protection component 4 includes a first protective shell 401 located on one side of the strong magnetic block 2 and a second protective shell 402 located on the other side of the strong magnetic block 2. Holes are provided on the first protective shell 401 and the second protective shell 402. A breathable mesh 403 is welded inside the holes of the first protective shell 401 and the second protective shell 402. A guide rod 404 is welded to the outer wall of the first protective shell 401 and the second protective shell 402. A sliding block 405 is slidably connected to the guide rod 404. A connecting pipe 406 is connected to the sliding block 405 at one end and a small vacuum cleaner 407 is connected to the other end of the connecting pipe 406. A cavity is provided inside the sliding block 405, and a hole for gas circulation is provided on one side of the outer wall of the sliding block 405. A connecting component 5 is located on the outer wall of the first protective shell 401 and the second protective shell 402. A reset component 6 is located on the sliding block 405.

[0039] The pull-displacement component 3 on the support frame 1 is activated. When the pull-displacement component 3 is in operation, it can drive the strong magnetic block 2 to move. By adjusting the gap between the strong magnetic block 2 and the flywheel, the rotational resistance of the flywheel can be adjusted. The cleaning and protection component 4 can prevent the strong magnetic block 2 from attracting external metal debris during operation and can prevent the flywheel from generating high temperature during rotation. The reset component 6 can reset the cleaning and protection component 4 to its original position after the mobile cleaning work. The connecting component 5 can maintain the connection effect between the structures during the installation and disassembly of the cleaning and protection component 4.

[0040] The first protective shell 401 and the second protective shell 402 can protect the strong magnetic block 2, thereby preventing external metal impurities from adsorbing onto the strong magnetic block 2. The ventilation mesh 403 can provide air circulation and prevent the flywheel from generating high temperature when rotating at high speed. The small vacuum cleaner 407 is started. The small vacuum cleaner 407 is connected to the sliding block 405 through the connecting pipe 406. The sliding block 405 slides vertically downward on the guide rod 404, thereby cleaning the dust attached to the surface of the ventilation mesh 403.

[0041] Example 2

[0042] Please see Figures 1-3 This embodiment provides a technical solution: a flywheel adjustment structure for an exercise bike, including: a connecting component 5 and a reset component 6;

[0043] The connecting assembly 5 includes a connecting shaft 501 located at the center of the outer wall of the first protective shell 401 and the second protective shell 402, and C-shaped blocks 502 rotatably connected to both ends of the connecting shaft 501 via a round rod. There are two sets of C-shaped blocks 502. Both ends of the two sets of connecting shafts 501 are provided with sleeves 503, which are welded to the other end of the C-shaped blocks 502. There are also two sets of fixing rods 504 slidably connected to the sleeves 503. The other ends of the two sets of fixing rods 504 are respectively welded to sliding blocks 405 on the outside of the first protective shell 401 and the second protective shell 402.

[0044] The reset assembly 6 includes a positioning rod 601 and a spring 602. The reset assembly 6 includes a positioning rod 601 welded to the outer wall of the first protective shell 401 and the second protective shell 402. There are two sets of springs 602, and one end of the two sets of springs 602 is welded to the outer wall of the first protective shell 401 and the second protective shell 402 respectively. The other end of the two sets of springs 602 is welded to the sliding block 405. The springs 602 are attached to the outside of the positioning rod 601.

[0045] After the sliding block 405 has finished cleaning, the spring 602 is lifted and positioned by the positioning rod 601, thereby driving the sliding block 405 to return to its original position.

[0046] Because the first protective shell 401 and the second protective shell 402 are connected in a fitted manner, the fixed rod 504 slides inside the sleeve 503. The sleeve 503, through its connection with the C-shaped block 502, allows for an angle change on the connecting shaft 501. This ensures that the first protective shell 401 and the second protective shell 402 remain connected, and after being removed from the support frame 1, the parts are prevented from scattering to various places.

[0047] The implementation principle of the flywheel adjustment structure of the exercise bike in this application is as follows:

[0048] First, the pull-displacement component 3 on the support frame 1 is activated. When the pull-displacement component 3 is in operation, it can drive the strong magnetic block 2 to move. By adjusting the gap between the strong magnetic block 2 and the flywheel, the rotational resistance of the flywheel can be adjusted. The cleaning and protection component 4 can prevent the strong magnetic block 2 from attracting external metal debris during operation and can prevent the flywheel from generating high temperature when rotating. The reset component 6 can reset the cleaning and protection component 4 to its original position after the mobile cleaning work. The connecting component 5 can maintain the connection effect between the structures when the cleaning and protection component 4 is installed and disassembled.

[0049] Secondly, the first protective shell 401 and the second protective shell 402 can protect the strong magnetic block 2, thereby preventing external metal impurities from adsorbing onto the strong magnetic block 2. Moreover, the ventilation mesh 403 can provide air circulation, preventing the flywheel from generating high temperature when rotating at high speed. The small vacuum cleaner 407 is started. The small vacuum cleaner 407 is connected to the sliding block 405 through the connecting pipe 406. The sliding block 405 slides vertically downward on the guide rod 404, thereby cleaning the dust attached to the surface of the ventilation mesh 403. When the sliding block 405 has finished cleaning, it is lifted by the spring 602. At this time, the spring 602 is positioned by the positioning rod 601, thereby driving the sliding block 405 to return to its original position.

[0050] Finally, since the first protective shell 401 and the second protective shell 402 are connected in a fitted manner, the fixing rod 504 slides inside the sleeve 503. The sleeve 503, through its connection with the C-shaped block 502, achieves an angle change on the connecting shaft 501. This ensures that the first protective shell 401 and the second protective shell 402 remain connected, and after being disassembled from the support frame 1, the parts are prevented from scattering to various places.

[0051] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this application. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A flywheel adjusting structure of an exercise bicycle, characterized in that, include: The flywheel adjustment structure includes a support frame (1), a strong magnetic block (2) set on the support frame (1), and a pulling displacement component (3) set on one side of the strong magnetic block (2). Cleaning and protection component (4), the cleaning and protection component (4) is disposed outside the strong magnetic block (2), the cleaning and protection component (4) includes a first protective shell (401) disposed on one side of the strong magnetic block (2), a second protective shell (402) disposed on the other side of the strong magnetic block (2), holes are provided on the first protective shell (401) and the second protective shell (402), a breathable mesh (403) welded inside the holes of the first protective shell (401) and the second protective shell (402), a guide rod (404) welded on the outer wall of the first protective shell (401) and the second protective shell (402), a sliding block (405) slidably connected to the guide rod (404), a connecting pipe (406) connected at one end to the sliding block (405), and a small vacuum cleaner (407) connected at the other end of the connecting pipe (406); A connecting component (5) is disposed on the outer walls of the first protective shell (401) and the second protective shell (402); A reset component (6) is disposed on a sliding block (405).

2. The flywheel adjusting structure of an exercise bicycle according to claim 1, wherein: The sliding block (405) has an internal cavity, and a hole for gas flow is provided on one side of the outer wall of the sliding block (405).

3. The flywheel adjusting structure of an exercise bicycle according to claim 1, wherein: The connecting assembly (5) includes a connecting shaft (501) located at the center of the outer walls of the first protective shell (401) and the second protective shell (402), and C-shaped blocks (502) rotatably connected at one end to both ends of the connecting shaft (501) via a round rod.

4. The flywheel adjusting structure of an exercise bicycle according to claim 3, wherein: The number of C-shaped blocks (502) is two sets.

5. The flywheel adjusting structure of an exercise bicycle according to claim 3, wherein: Both ends of the two sets of connecting shafts (501) are provided with sleeves (503), the sleeves (503) are welded to the other end of the C-shaped block (502), and a fixed rod (504) is slidably connected to the sleeve (503) at one end.

6. The flywheel adjusting structure of an exercise bicycle according to claim 5, wherein: The number of fixing rods (504) is two sets, and the other ends of the two sets of fixing rods (504) are respectively welded to the sliding blocks (405) on the outside of the first protective shell (401) and the second protective shell (402).

7. The flywheel adjusting structure of an exercise bicycle according to claim 1, wherein: The reset assembly (6) includes a positioning rod (601) and a spring (602).

8. The flywheel adjusting structure of an exercise bicycle according to claim 7, wherein: The reset assembly (6) includes a positioning rod (601) welded to the outer walls of the first protective shell (401) and the second protective shell (402).

9. The flywheel adjusting structure of an exercise bicycle according to claim 7, wherein: The number of springs (602) is two sets, and one end of each set of springs (602) is welded to the outer wall of the first protective shell (401) and the second protective shell (402) respectively, and the other end of each set of springs (602) is welded to the sliding block (405).

10. The flywheel adjustment structure of an exercise bike according to claim 9, characterized in that: The spring (602) is attached to the outside of the positioning rod (601).