Lightweight inner magnetic flywheel

Abstract

This utility model provides a lightweight internal magnetic flywheel, including a flywheel body, a magnetic control component, and a rotating shaft. The flywheel body is formed by stamping steel plate and includes a disc, an outer ring, and a threaded tube. The magnetic control component is installed in the mounting cavity of the flywheel body and is coaxial with the flywheel body and rotates relative to it. The rotating shaft passes through the flywheel body and the magnetic control component in sequence, and the rotating shaft and the flywheel body are rotatably mounted relative to each other via bearings, while the rotating shaft and the magnetic control component are fixedly mounted relative to each other. The flywheel provided by this utility model has a flywheel body made of a stretched component and stamped from steel plate, which integrates the advantages of uniform texture of steel plate material, thus forming a flywheel body with uniform material. When rotating, compared with cast iron, it has the advantages of stable rotation, small wobbling amplitude, and low noise, which can improve the quality of sports products and bring consumers a better user experience. In addition, since it is made of steel plate by stamping, the flywheel can be made thinner, thereby reducing the weight of the flywheel and the fitness products using it, which is beneficial for transportation and handling.

Description

Technical Field

[0001] This utility model relates to the field of fitness equipment technology, and in particular to a lightweight internal magnetic flywheel. Background Technology

[0002] Flywheels are commonly used in exercise bikes, and their main body is generally made of cast iron. However, cast iron often suffers from uneven weight distribution, leading to problems such as shaking and excessive noise when the flywheel rotates. This results in a poor user experience and negative reviews of the product's quality and texture. In addition, existing cast iron flywheels are generally quite thick and large, making them heavy and difficult to transport and handle. Therefore, this invention provides a flywheel with uniform texture and lighter weight, which solves the above-mentioned technical problems. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model proposes a lightweight internal magnetic flywheel structure.

[0004] A lightweight internal magnetic flywheel includes a flywheel body, a magnetic control assembly, and a rotating shaft.

[0005] To improve the weight uniformity of the flywheel body, the flywheel body is made of a stretched component and stamped from steel plate, resulting in a uniform overall texture. This significantly reduces the swaying amplitude during rotation compared to traditional cast iron materials, and also reduces noise accordingly.

[0006] The flywheel body includes a disc, an outer ring, and a threaded tube. The outer ring is disposed around the circular circumference of the disc and forms a circular mounting cavity on one side of the disc. The threaded tube is coaxially disposed with the disc and extends from the other side of the disc, and is provided with external threads.

[0007] The magnetic control component is installed in the mounting cavity and is coaxial with and rotates relative to the flywheel body.

[0008] The rotating shaft passes through the flywheel body and the magnetic control assembly in sequence, and the rotating shaft and the flywheel body are rotatably mounted relative to each other via bearings, while the rotating shaft and the magnetic control assembly are fixedly mounted relative to each other. When the flywheel body rotates, the magnetic control assembly can control the magnitude of the resistance to the rotation of the flywheel body.

[0009] The flywheel provided by this utility model has a main body made of a stretched component and stamped from a steel plate. This integrates the advantages of the uniform texture of the steel plate material, thus forming a flywheel body with uniform material. When rotating, compared with cast iron, it has the advantages of stable rotation, small sway amplitude, and low noise, which can improve the quality of sports products and bring consumers a better user experience. In addition, since it is made of steel plate by stamping, the flywheel can be made thinner, thereby reducing the weight of the flywheel and the fitness products using it, which is conducive to transportation and handling.

[0010] Preferably, the flywheel further includes an aluminum ring, which is fitted to the inner wall of the mounting cavity and separates the magnetic control component from the peripheral wall of the mounting cavity, thus preventing the magnetic attraction element of the magnetic control component from being directly attracted to the flywheel body.

[0011] Preferably, to improve the installation firmness of the aluminum ring, the aluminum ring is a C-shaped ring, which is compressed and then inserted into the mounting cavity. The aluminum ring closes after installation, which simplifies the installation structure and prevents the flywheel body from deviating in mass.

[0012] Preferably, the magnetic control assembly includes a mounting base, a swing arm, magnetic tiles, an adjusting component, and a linkage component. The mounting base is fixedly sleeved on the rotating shaft and located within the mounting cavity, providing mounting positions for other components. One end of the swing arm is rotatably mounted on the mounting base, and the other end is close to the peripheral wall of the mounting cavity. The magnetic tiles are mounted on the side of the swing arm facing the peripheral wall of the mounting cavity, and there are at least two sets of swing arms and magnetic tiles, evenly distributed along the peripheral wall of the mounting cavity. The adjusting component is movably mounted on the mounting base and drives one of the swing arms to swing closer to or away from the peripheral wall of the mounting cavity. The linkage component is movably mounted on the mounting base and synchronously drives all the swing arms to swing synchronously, thereby achieving synchronous movement of all magnetic tiles and avoiding uneven force on the flywheel body, which could cause it to wobble.

[0013] Preferably, the mounting base includes a bottom cover and a top cover, which are sequentially installed into the mounting cavity. The bottom cover and the top cover are fixed together by screws, and the gap between them forms a mounting space. The swing arm, magnetic tile, adjusting component, and linkage component are installed within the mounting space. The bottom cover and the top cover are relatively fixed to the rotating shaft by pins.

[0014] Preferably, there are two sets of swing arms and magnetic tiles, and both the swing arms and magnetic tiles are arc-shaped. The swing arms are oscillatingly mounted on the periphery of the mounting base, and the magnetic tiles are fitted onto the outer periphery of the swing arms.

[0015] Preferably, the adjusting component includes a slider, a pull rope, and a spring. The slider is slidably mounted on the mounting base. One end of the pull rope is connected to the slider, and the other end is connected to the swing end of the swing arm. The slider pulls and moves the swing arm through the pull rope, allowing the swing arm and the magnetic tile to move away from the peripheral wall of the mounting cavity through the action of the slider and the pull rope. Additionally, each swing arm is equipped with a spring. When the spring is compressed, one end presses against the mounting base, and the other end presses against the middle of the swing arm facing the rotating shaft, providing a restoring force to the swing arm near the peripheral wall of the mounting cavity.

[0016] Preferably, the mounting base is also provided with a guide wheel, and the middle part of the pull rope passes around the guide wheel, so that the slider is smoother when pulling the pull rope and the adjustment sensitivity of the magnetic control component is improved.

[0017] Preferably, the linkage includes a rotating part and a linkage part. The rotating part is rotatably mounted on the mounting base and coaxial with the rotating shaft. The linkage part is rod-shaped, and the number of linkage parts is the same as that of the swing arms. One end of the linkage part is connected to the rotating part, and the other end extends and passes through a through hole at the swing end of the swing arm. One swing arm is driven to swing by an adjusting component, which in turn drives the linkage part to rotate through the through hole. The linkage part drives the other swing arms to swing synchronously through the linkage part. The structure is simple and the synchronization effect is good.

[0018] Preferably, the mounting base is provided with a fan-shaped limiting groove for the linkage to swing. On the one hand, it can limit the excessive swing of the linkage, and on the other hand, it can limit the swing range of the swing arm, so as to avoid affecting the rotation of the flywheel body when there is excessive adjustment or adjustment failure.

[0019] As can be seen from the above description of this utility model, this utility model has the following beneficial effects:

[0020] The flywheel provided by this utility model has a flywheel body made of a stretching component and stamped from a steel plate. It can integrate the advantages of uniform texture of steel plate material, thus forming a flywheel body with uniform material. When rotating, compared with cast iron material, it has the advantages of stable rotation, small sway amplitude and low noise, which can improve the quality of sports products and bring consumers a better user experience.

[0021] Because it is made by stamping steel plates, the flywheel can be made thinner, thereby reducing the weight of the flywheel and the fitness products that use it, which facilitates transportation and handling.

[0022] The aluminum ring is a C-shaped ring, which is compressed and then inserted into the mounting cavity. The installation structure is simple and will not easily cause the flywheel body mass deviation, while ensuring a firm installation.

[0023] The adjusting component uses a pull rope, which can change the direction of the force and reduce the structural complexity of the adjusting component.

[0024] The linkage adopts a rotating movable mounting structure, which can drive each swing arm to rotate synchronously through a simple structure.

[0025] The fan-shaped limiting groove can limit the excessive swing of the linkage part and limit the swing range of the swing arm. Even when the magnetic control component fails, the flywheel body can still rotate. Attached Figure Description

[0026] The accompanying drawings, which are provided to further illustrate the present invention and constitute a part of the present invention, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0027] in:

[0028] Figure 1 Axonal view of a lightweight internal magnetic flywheel Figure 1 ;

[0029] Figure 2 Axonal view of a lightweight internal magnetic flywheel Figure 2 ;

[0030] Figure 3 An explosion of a lightweight internal magnetic flywheel Figure 1 ;

[0031] Figure 4 An explosion of a lightweight internal magnetic flywheel Figure 2 ;

[0032] Figure 5 An explosion of a lightweight internal magnetic flywheel Figure 3 ;

[0033] Figure 6 This is a front view of a lightweight internal magnetic flywheel;

[0034] Figure 7 This is a cross-sectional view of a lightweight internal magnetic flywheel; (about Figure 6 (AA section)

[0035] Figures 1 to 7 The components are labeled as follows: flywheel body 1, wheel 11, outer ring 12, threaded tube 13, aluminum ring 14, bearing 15, magnetic control assembly 2, mounting base 21, bottom cover 211, fan-shaped limit groove 2111, face cover 212, pin 213, swing arm 22, magnetic tile 23, adjusting component 24, slider 241, pull rope 242, spring 243, guide wheel 244, linkage component 25, rotating part 251, linkage part 252, and rotating shaft 3. Detailed Implementation

[0036] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0037] Please see Figures 1 to 7 A lightweight internal magnetic flywheel includes a flywheel body 1, a magnetic control assembly 2, and a rotating shaft 3.

[0038] To improve the weight uniformity of the flywheel body 1, the flywheel body 1 is made of a stretching component and is formed by stamping steel plate. The overall texture is uniform, and the swaying amplitude during rotation is significantly reduced compared with traditional cast iron materials. At the same time, the noise is also reduced accordingly.

[0039] The flywheel body 1 includes a disc 11, an outer ring 12, and a threaded tube 13. The outer ring 12 is disposed on the circular circumference of the disc 11 and forms a circular mounting cavity on one side of the disc 11. The threaded tube 13 is coaxially disposed with the disc 11 and extends from the other side of the disc 11, and is provided with external threads.

[0040] The magnetic control component 2 is installed in the mounting cavity and is coaxial with and rotates relative to the flywheel body 1.

[0041] In one embodiment, the flywheel further includes an aluminum ring 14, which is fitted against the inner wall of the mounting cavity and separates the magnetic control component 2 from the peripheral wall of the mounting cavity, preventing the magnetic attracting element of the magnetic control component 2 from directly adsorbing onto the flywheel body 1. Preferably, to improve the installation firmness of the aluminum ring 14, the aluminum ring 14 is a C-shaped ring, which is compressed and then inserted into the mounting cavity. The aluminum ring 14 closes after installation, resulting in a simple installation structure that does not easily cause mass deviation of the flywheel body 1.

[0042] The rotating shaft 3 passes through the flywheel body 1 and the magnetic control component 2 in sequence, and the rotating shaft 3 and the flywheel body 1 are rotatably mounted relative to each other through the bearing 15, while the rotating shaft 3 and the magnetic control component 2 are fixedly mounted relative to each other. When the flywheel body 1 rotates, the magnetic control component 2 can control the magnitude of the resistance to the rotation of the flywheel body 1.

[0043] In one embodiment, the magnetic control assembly 2 includes a mounting base 21, a swing arm 22, magnetic tiles 23, an adjusting member 24, and a linkage member 25. The mounting base 21 is fixedly sleeved on the rotating shaft 3 and located within the mounting cavity, providing mounting positions for other components. One end of the swing arm 22 is rotatably mounted on the mounting base 21, and the other end is close to the peripheral wall of the mounting cavity. The magnetic tiles 23 are mounted on the side of the swing arm 22 facing the peripheral wall of the mounting cavity, and there are at least two sets of swing arms 22 and magnetic tiles 23, evenly distributed along the peripheral wall of the mounting cavity. The adjusting member 24 is movably mounted on the mounting base 21 and drives one of the swing arms 22 to swing closer to or away from the peripheral wall of the mounting cavity. The linkage member 25 is movably mounted on the mounting base 21 and synchronously drives all the swing arms 22 to swing synchronously, thereby achieving synchronous movement of all magnetic tiles 23 and avoiding uneven force on the flywheel body 1, which would cause it to shake.

[0044] Based on the above embodiments, the mounting base 21 includes a bottom cover 211 and a top cover 212. Preferably, the bottom cover 211 and the top cover 212 can be made of plastic. The bottom cover 211 and the top cover 212 are sequentially installed into the mounting cavity. The bottom cover 211 and the top cover 212 are fixed together by screws, and the gap between them forms the mounting space. The swing arm 22, the magnetic tile 23, the adjusting member 24, and the linkage member 25 are installed in the mounting space. The bottom cover 211 and the top cover 212 are relatively fixed to the rotating shaft 3 by pins 213.

[0045] Based on the above embodiment, there are two sets of swing arms 22 and magnetic tiles 23, and both swing arms 22 and magnetic tiles 23 are arc-shaped. The swing arms 22 are oscillatingly mounted on the periphery of the mounting base 21, and the magnetic tiles 23 are fitted and mounted on the outer periphery of the swing arms 22.

[0046] In one embodiment, the adjusting member 24 includes a slider 241, a pull rope 242, and a spring 243. The slider 241 is slidably mounted on the mounting base 21. One end of the pull rope 242 is connected to the slider 241, and the other end is connected to the swing end of the swing arm 22. The slider 241 pulls and moves the swing arm 22 by the pull rope 242. Through the action of the slider 241 and the pull rope 242, the swing arm 22 and the magnetic tile 23 can be moved away from the peripheral wall of the mounting cavity. Optionally, the slider 241 can be driven to reciprocate by a push rod motor (not shown) mounted on the mounting base 21.

[0047] Preferably, the mounting base 21 is also provided with a guide wheel 244, and the middle part of the pull rope 242 passes around the guide wheel 244, so that the slider 241 is smoother when pulling the pull rope 242, thereby improving the adjustment sensitivity of the magnetic control component 2. In addition, each swing arm 22 is provided with a spring 243. When the spring 243 is compressed, one end abuts against the mounting base 21, and the other end abuts against the middle part of the swing arm 22 facing the rotating shaft 3, providing the swing arm 22 with a restoring force close to the peripheral wall of the mounting cavity.

[0048] In one embodiment, the linkage 25 includes a rotating part 251 and a linkage part 252. The rotating part 251 is rotatably mounted on the mounting base 21 and coaxial with the rotating shaft 3. The linkage part 252 is rod-shaped and the number of linkage parts is the same as that of the swing arms 22. One end of the linkage part 252 is connected to the rotating part 251, and the other end extends and passes through the through hole at the swing end of the swing arm 22. The swing arm 22 is driven to swing by the adjusting member 24, which in turn drives the linkage 25 to rotate through the through hole. The linkage 25 drives the other swing arms 22 to swing synchronously through the linkage part 252. The structure is simple and the synchronization effect is good.

[0049] Based on the above embodiments, the mounting base 21 is provided with a fan-shaped limiting groove 2111 for the linkage part 252 to swing. On the one hand, it can limit the excessive swing of the linkage part 252. On the other hand, it can also limit the swing range of the swing arm 22, so as to avoid affecting the rotation of the flywheel body 1 when there is excessive adjustment or adjustment failure.

[0050] The flywheel provided by this utility model has a flywheel body 1 made of a stretching component and stamped from a steel plate. This integrates the advantages of uniform texture of steel plate material, thus forming a flywheel body 1 with uniform material. When rotating, compared with cast iron, it has the advantages of stable rotation, small sway amplitude, and low noise, which can improve the quality of sports products and bring consumers a better user experience. In addition, since it is made of steel plate by stamping, the flywheel body 1 can be made thinner, thereby reducing the weight of the flywheel and the fitness products using it, which is conducive to transportation and handling.

[0051] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0052] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0053] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0054] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A lightweight internal magnetic flywheel, characterized in that, Includes the flywheel body, magnetic control assembly, and shaft; The flywheel body is a stretched part, formed by stamping steel plate, including a disc, an outer ring and a threaded tube. The outer ring is set on the circumference of the disc and forms a circular mounting cavity on one side of the disc. The threaded tube is coaxial with the disc and extends from the other side of the disc, and is provided with external threads. The magnetic control component is installed in the mounting cavity and is coaxial with and rotatably arranged relative to the flywheel body; The rotating shaft passes through the flywheel body and the magnetic control assembly in sequence, and the rotating shaft and the flywheel body are mounted relative to each other via bearings, while the rotating shaft and the magnetic control assembly are mounted relatively fixedly.

2. The lightweight internal magnetic flywheel according to claim 1, characterized in that, The flywheel also includes an aluminum ring, which is fitted to the inner wall of the mounting cavity and separates the magnetic control assembly from the peripheral wall of the mounting cavity.

3. A lightweight internal magnetic flywheel according to claim 2, characterized in that, The aluminum ring is a C-shaped ring, which is compressed and then inserted into the mounting cavity, and the opening of the aluminum ring is closed after installation.

4. A lightweight internal magnetic flywheel according to claim 1 or 2, characterized in that, The magnetic control assembly includes a mounting base, a swing arm, a magnetic tile, an adjusting component, and a linkage component. The mounting base is fixedly sleeved on the rotating shaft and located within the mounting cavity. One end of the swing arm is rotatably mounted on the mounting base, and the other end is close to the peripheral wall of the mounting cavity. The magnetic tile is mounted on the side of the swing arm facing the peripheral wall of the mounting cavity, and there are at least two sets of swing arms and magnetic tiles, evenly distributed along the peripheral wall of the mounting cavity. The adjusting component is movably mounted on the mounting base and connects to drive one of the swing arms to swing closer to or away from the peripheral wall of the mounting cavity. The linkage component is movably mounted on the mounting base and synchronously drives all the swing arms to swing synchronously.

5. A lightweight internal magnetic flywheel according to claim 4, characterized in that, The mounting base includes a bottom cover and a top cover, which are sequentially installed into the mounting cavity. The bottom cover and the top cover are fixed together by screws, and the gap between them forms the mounting space. The swing arm, magnetic tile, adjusting component, and linkage component are installed in the mounting space. The bottom cover and the top cover are relatively fixed to the rotating shaft by pins.

6. A lightweight internal magnetic flywheel according to claim 4, characterized in that, There are two sets of swing arms and magnetic tiles, and both the swing arms and magnetic tiles are arc-shaped. The swing arms are oscillatingly mounted on the periphery of the mounting base, and the magnetic tiles are fitted onto the outer periphery of the swing arms.

7. A lightweight internal magnetic flywheel according to claim 4, characterized in that, The adjusting component includes a slider, a pull rope, and a spring. The slider is slidably mounted on the mounting base. One end of the pull rope is connected to the slider, and the other end is connected to the swing end of the swing arm. The slider holds and pulls the swing arm through the pull rope. Each swing arm is provided with a spring. When the spring is compressed, one end presses against the mounting base, and the other end presses against the middle of the swing arm facing the rotating shaft.

8. A lightweight internal magnetic flywheel according to claim 7, characterized in that, The mounting base is also equipped with a guide wheel, and the middle part of the pull rope passes around the guide wheel.

9. A lightweight internal magnetic flywheel according to claim 4, characterized in that, The linkage component includes a rotating part and a linkage part. The rotating part is rotatably mounted on the mounting base and is coaxial with the rotating shaft. The linkage part is rod-shaped and the number is the same as that of the swing arms. One end of the linkage part is connected to the rotating part, and the other end extends and passes through the through hole at the swing end of the swing arm. One of the swing arms is driven to swing by an adjusting component, which in turn drives the linkage component to rotate through the through hole. The linkage component drives the other swing arms to swing synchronously through the linkage part.

10. A lightweight internal magnetic flywheel according to claim 9, characterized in that, The mounting base is provided with a fan-shaped limiting groove for the linkage to swing.

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