Bicycle with adjustable resistance

Abstract

The utility model discloses a bicycle with adjustable resistance, which belongs to the field of bicycles and comprises a base, a bicycle arranged on the base and a flywheel rotatably mounted at one end of the bicycle. The bicycle with the adjustable resistance is simple in structure and convenient to use, the damping magnetic plate and the fixed magnetic plate are arranged, the magnetic force can be adjusted by adjusting the distance between the damping magnetic plate and the fixed magnetic plate, so that the resistance brought by the flywheel is adjusted, friction cannot be generated between the damping magnetic plate and the fixed magnetic plate, and the bicycle is more convenient to use; a transmission plate is driven to rotate through a rotating ring, then an adjusting plate is pulled to slide in a support, adjustment of the distance between a damping magnetic plate and a fixed magnetic plate is achieved, accurate control over resistance is provided, a rider can conduct customized adjustment according to personal preference and training requirements, and the riding experience is improved. And meanwhile, the fixed sleeve is rotated through the limiting insertion rod, and it is ensured that the adjusted resistance can be stably kept on the set level.

Description

Technical Field

[0001] The utility model relates to the technical field of bicycles, in particular to a bicycle with adjustable resistance. Background Art

[0002] Adjustable resistance bicycles, especially spinning bikes, provide riders with a more personalized and diverse training experience. The basic structure of a spinning bike is similar to that of an ordinary bicycle, including handlebars, seat, pedals and wheels, but its structure can be greatly adjusted to suit the needs of different riders.

[0003] Upon investigation, it was found that the Chinese utility model patent with publication number CN217139111U discloses a fitness bicycle with adjustable resistance. The fitness bicycle realizes the movement of the push rod and the piston through a fixed rod and a thick tube in conjunction with a limit block and a limit groove, so that the push rod and the piston are squeezed out of the air in the fixed cylinder, driving the expansion bladder to expand to different degrees, and promoting the adjustment of the resistance through the size of the contact area between the block and the fitness bicycle body, thereby achieving different degrees of fitness exercise and enhancing the fitness effect; however, the method used to achieve the resistance is to generate resistance through the friction between the block and the fitness bicycle, and the friction between the block and the fitness bicycle will generate a certain noise, and the friction of the block will cause wear and tear during use and needs to be replaced regularly, which is relatively cumbersome.

[0004] Therefore, the utility model provides a bicycle with adjustable resistance to solve the above problems. Utility Model Content

[0005] (1) Technical problems solved

[0006] The utility model provides a bicycle with adjustable resistance, aiming to solve the problems in the prior art such as the resistance blocks of existing fitness bicycles being easy to wear out and inconvenient to replace.

[0007] (2) Technical solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a bicycle with adjustable resistance, comprising a base, a bicycle arranged on the base, and a flywheel rotatably mounted on one end of the bicycle.

[0009] In order to solve the problem of adjusting the resistance when riding a bicycle, the bicycle is provided with a protective cover adapted to the flywheel at the position of the flywheel. A number of fixed magnetic plates distributed in a ring array are fixedly installed on the flywheel. A number of brackets distributed in a ring array are fixedly installed in the protective cover. An adjustment plate is slidably installed in the bracket. A damping magnetic plate corresponding to the fixed magnetic plate is fixedly installed at the end of the adjustment plate away from the flywheel. A transmission mechanism for driving the adjustment plate is provided in the protective cover. By using the fixed magnetic plate and the damping magnetic plate in combination, a certain resistance can be generated during the rotation of the flywheel, and the resistance can be adjusted by adjusting the distance between the damping magnetic plate and the fixed magnetic plate, making it more convenient to use.

[0010] Preferably, to address the problem of adjusting the position of the damping magnetic plate, the transmission mechanism includes a rotating ring rotatably mounted within the protective cover and a plurality of transmission plates rotatably mounted on the rotating ring in an annular array, with the ends of the transmission plates distal from the rotating ring being rotatably connected to the adjustment plates. Rotation of the rotating ring drives the adjustment plates to slide along the bracket, thereby adjusting the position of the damping magnetic plate and varying the spacing between the damping magnetic plate and the fixed magnetic plate.

[0011] Preferably, to address the issue of magnetic force between the fixed magnetic plate and the damping magnetic plate, the fixed magnetic plate and the damping magnetic plate have identical magnetic poles on opposing ends, and the opposing surfaces of the fixed magnetic plate and the damping magnetic plate are both configured as curved surfaces. By configuring the magnetic poles to be identical, a repulsive magnetic force is generated between the fixed magnetic plate and the damping magnetic plate, and the curved surface design ensures that magnetic force is generated in the direction of rotation during flywheel rotation.

[0012] Preferably, to address the problem of driving the rotating ring, the protective cover is provided with a guide opening corresponding to the rotating ring. A fixed sleeve adapted to the guide opening is fixedly mounted on the rotating ring, and a limiting mechanism for limiting the position of the rotating ring is disposed within the fixed sleeve. The fixed sleeve can drive the rotating ring to slide along the guide opening, thereby driving the rotating ring and adjusting the position of the damping magnetic plate.

[0013] Preferably, to solve the problem of limiting the position of the fixed sleeve, the limiting mechanism includes a sliding rod slidably mounted within the fixed sleeve, a return spring fixedly mounted between the sliding rod and the fixed sleeve, and a limiting rod fixedly mounted on the end of the sliding rod away from the return spring, with a pull plate fixedly mounted on the end of the limiting rod away from the sliding rod. Through the use of the limiting rod, the fixed sleeve can be limited in position within the guide opening, ensuring that the damping magnetic plate can be maintained in a certain position for use.

[0014] Preferably, in order to solve the problem of limiting the position of the limiting rod, a plurality of limiting grooves are provided in the guide opening and are distributed in an annular array and adapted to the limiting rod. Through the setting of the limiting grooves, the limiting rod can be inserted into the limiting grooves to fix the fixing sleeve.

[0015] Preferably, in order to solve the problem of the rotation range of the rotating ring, the guide opening is a quarter circle. By setting the guide opening, the rotation angle of the rotating ring can be limited, which is convenient for use.

[0016] (3) Beneficial effects

[0017] The bicycle with adjustable resistance has a simple structure and is easy to use. By arranging a damping magnetic plate and a fixed magnetic plate and adjusting the distance between the damping magnetic plate and the fixed magnetic plate, the magnitude of the magnetic force can be adjusted, thereby adjusting the resistance brought by the flywheel, and no friction is generated between the two, making it more convenient to use. The transmission plate is driven to rotate by a rotating ring, and then the adjustment plate is pulled to slide in the bracket, thereby adjusting the distance between the damping magnetic plate and the fixed magnetic plate, providing precise control of the resistance, and enabling the rider to make customized adjustments according to personal preferences and training needs. At the same time, the fixed sleeve is rotated by a limit rod, ensuring that the adjusted resistance can be stably maintained at the set level. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The figure is a schematic diagram of the overall structure of a bicycle with adjustable resistance;

[0019] Figure 2 A schematic diagram of the exploded structure of a flywheel and a protective cover of a bicycle with adjustable resistance;

[0020] Figure 3 The figure is a schematic diagram of the exploded structure of a flywheel and a protective cover of a bicycle with adjustable resistance from multiple angles;

[0021] Figure 4 for Figure 3 Schematic diagram of the structure at point A.

[0022] In the figure: 1. Base; 2. Bicycle; 21. Flywheel; 22. Fixed magnetic plate; 3. Protective cover; 31. Bracket; 32. Adjustment plate; 33. Damping magnetic plate; 34. Transmission mechanism; 341. Rotating ring; 342. Transmission plate; 35. Guide port; 351. Limiting groove; 4. Fixed sleeve; 41. Limiting mechanism; 411. Sliding rod; 412. Return spring; 413. Limiting rod; 4131. Pull plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Example 1

[0025] The utility model provides a bicycle with adjustable resistance, such as Figure 1-4 As shown, the bicycle comprises a base 1, a bicycle 2 arranged on the base 1, and a flywheel 21 rotatably mounted on one end of the bicycle 2;

[0026] The bicycle 2 is provided with a protective cover 3 adapted to the flywheel 21 at the position of the flywheel 21, and a plurality of fixed magnetic plates 22 distributed in a ring array are fixedly installed on the flywheel 21, and a plurality of brackets 31 distributed in a ring array are fixedly installed in the protective cover 3, and an adjustment plate 32 is slidably installed in the bracket 31, and a damping magnetic plate 33 corresponding to the fixed magnetic plate 22 is fixedly installed at one end of the adjustment plate 32 away from the flywheel 21, and the magnetic poles of the fixed magnetic plate 22 and the damping magnetic plate 33 at the opposite ends are the same, and the opposite sides of the fixed magnetic plate 22 and the damping magnetic plate 33 are both set to arc surfaces, and a transmission mechanism 34 for driving the adjustment plate 32 is provided in the protective cover 3.

[0027] During use, the bicycle 2 can generate riding resistance through the flywheel 21. When the resistance of the bicycle 2 needs to be adjusted, the adjustment plate 32 can be driven to slide in the bracket 31 through the transmission mechanism 34, so that the distance between the damping magnetic plate 33 and the fixed magnetic plate 22 is adjusted. During the rotation of the flywheel 21, the fixed magnetic plate 22 can be driven to rotate. When the fixed magnetic plate 22 and the damping magnetic plate 33 are relative to each other, a repulsive magnetic force can be generated, which can bring a certain resistance to the flywheel 21, and the size of the magnetic force can be adjusted by adjusting the distance between the damping magnetic plate 33 and the fixed magnetic plate 22, thereby realizing the adjustment of the riding resistance of the bicycle 2.

[0028] Specifically, the transmission mechanism 34 includes a rotating ring 341 rotatably installed in the protective cover 3 and a plurality of transmission plates 342 rotatably installed on the rotating ring 341 and distributed in a ring array. The end of the transmission plate 342 away from the rotating ring 341 is rotatably connected to the adjustment plate 32; when the rotating ring 341 rotates, it can drive the transmission plate 342 to rotate. The two ends of the transmission plate 342 are rotatably connected to the adjustment plate 32 and the rotating ring 341 respectively. Therefore, when the rotating ring 341 rotates, it can drive the transmission plate 342 to rotate in an inclined state, thereby pulling the adjustment plate 32 to slide in the bracket 31.

[0029] Example 2

[0030] Different from Example 1, a guide opening 35 corresponding to the rotating ring 341 is provided on the protective cover 3, a fixed sleeve 4 adapted to the guide opening 35 is fixedly installed on the rotating ring 341, and a limiting mechanism 41 for limiting the rotating ring 341 is provided in the fixed sleeve 4.

[0031] During use, the rotating ring 341 can be driven to rotate by driving the fixed sleeve 4 , and the fixed sleeve 4 can slide along the guide opening 35 when rotating, so as to better drive the rotating ring 341 .

[0032] The cam 413 is engaged with the locking cam 416 and the locking cam 417, and the locking cam 418 is engaged with the locking cam 419. The locking cam 419 is engaged with the locking cam 419 and the locking cam 419, and the locking cam 419 is engaged with the locking cam 419.

[0033] Furthermore, the guide opening 35 is provided with a plurality of limiting grooves 351 distributed in a circular array and adapted to the limiting rod 413; when the limiting rod 413 enters the guide opening 35, it can be inserted into the limiting groove 351, thereby fixing the fixed sleeve 4 and the rotating ring 341.

[0034] It should be noted that the guide opening 35 is a quarter circle.

[0035] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A bicycle with adjustable resistance, comprising a base (1), a bicycle (2) arranged on the base (1), and a flywheel (21) rotatably mounted on one end of the bicycle (2); Its characteristics are: The bicycle (2) is provided with a protective cover (3) adapted to the flywheel (21) at the position of the flywheel (21); a plurality of fixed magnetic plates (22) distributed in a ring array are fixedly installed on the flywheel (21); a plurality of brackets (31) distributed in a ring array are fixedly installed in the protective cover (3); an adjustment plate (32) is slidably installed in the bracket (31); a damping magnetic plate (33) corresponding to the fixed magnetic plate (22) is fixedly installed at one end of the adjustment plate (32) away from the flywheel (21); and a transmission mechanism (34) for driving the adjustment plate (32) is provided in the protective cover (3).

2. The bicycle with adjustable resistance according to claim 1, characterized in that: The transmission mechanism (34) comprises a rotating ring (341) rotatably mounted in the protective cover (3) and a plurality of transmission plates (342) rotatably mounted on the rotating ring (341) and distributed in a ring array. One end of the transmission plate (342) away from the rotating ring (341) is rotatably connected to the adjustment plate (32).

3. The bicycle with adjustable resistance according to claim 1, characterized in that: The magnetic poles of the fixed magnetic plate (22) and the damping magnetic plate (33) at opposite ends are the same, and the opposite surfaces of the fixed magnetic plate (22) and the damping magnetic plate (33) are both configured as arc surfaces.

4. The bicycle with adjustable resistance according to claim 2, characterized in that: The protective cover (3) is provided with a guide opening (35) corresponding to the rotating ring (341); a fixed sleeve (4) adapted to the guide opening (35) is fixedly mounted on the rotating ring (341); a limiting mechanism (41) for limiting the rotating ring (341) is provided in the fixed sleeve (4).

5. The bicycle with adjustable resistance according to claim 4, characterized in that: The limiting mechanism (41) comprises a sliding rod (411) slidably mounted in the fixed sleeve (4), a return spring (412) fixedly mounted between the sliding rod (411) and the fixed sleeve (4), and a limiting rod (413) fixedly mounted on one end of the sliding rod (411) away from the return spring (412), and a pull plate (4131) fixedly mounted on the end of the limiting rod (413) away from the sliding rod (411).

6. The bicycle with adjustable resistance according to claim 5, characterized in that: A plurality of limiting grooves (351) distributed in a ring array and adapted to the limiting insertion rod (413) are provided in the guide opening (35).

7. The bicycle with adjustable resistance according to claim 4, characterized in that: The guide opening (35) is in the shape of a quarter circle.

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