Winding device and body builder

By designing a winding device including a winding wheel, rope and guide sleeve, the problem of stacking lines during rope retraction in the fitness device is solved, the rope outgoing stability and resistance consistency are achieved, and the training effect is improved.

CN222467955UActive Publication Date: 2025-02-14QINGDAO HAISHUO STEEL MODEL PROD CO LTD
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Patent Information

Application Number
CN202420893533.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-04-26
Publication Date
2025-02-14
Estimated Expiration
2034-04-26

AI Technical Summary

Technical Problem

During the rope retraction of the fitness machine, the stacking phenomenon is prone to occur, which leads to a change in the tension radius and affects the consistency of the training movements and the training effect.

Method used

Design a winding device, including a winding wheel, a rope and a guide sleeve. The guide section of the winding wheel and the guide sleeve are rotated together to make the winding wheel move in the axial direction. The rope is wound in a single-layer spiral shape to avoid the phenomenon of stacking lines. .

Benefits of technology

It effectively avoids the stacking phenomenon during the rope retraction process, ensures the stability of the rope outgoing, reduces the feeling of pause, and makes the resistance felt by the user consistent with the resistance provided by the resistance source, improving the consistency of the training movement and training effect.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the technical field of fitness equipment, and relates to a winding device and the fitness equipment. The winding device comprises a reel, a rope and a guide sleeve. The reel comprises a winding section and a guide section which are arranged in the axial direction of the reel, and a spiral guide groove is formed in the outer wall of the guide section. The guide sleeve sleeves the guide section and is in threaded connection with the guide section; the rope is wound on the winding section, one end of the rope is connected to the reel, and the other end of the rope is separated from the reel to be connected with a handle assembly for training; when the reel rotates back and forth under the action of external force, the guide section and the guide sleeve are mutually screwed, so that the reel does reciprocating motion relative to the guide sleeve in the axial direction of the reel, and the rope is retracted and pulled. The rope winding device can avoid the phenomenon of line folding in the rope winding and pulling process, and ensures that the rope is stably wound out, so that obvious pause feeling is avoided in the rope winding and pulling process, the continuity of training actions of a user is ensured, and the training effect is ensured.
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Description

Technical Field

[0001] The utility model belongs to the technical field of fitness equipment, and in particular relates to a winding device and a fitness equipment. Background Art

[0002] At present, in the fitness equipment industry, many trainings are conducted by means of ropes, that is, the ropes are pulled to overcome resistance to achieve the purpose of impedance training. The ropes need to be frequently pulled out of the winding device or reeled back into the winding device. However, in the process of rope reeling, overlapping is prone to occur, that is, the rope is prone to be wound multiple times at the same position on the axis of the winding wheel, resulting in changes in the rope tension radius, causing obvious setbacks in the process of rope reeling, which not only affects the continuity of the user's training movements, but also makes the resistance felt by the user inconsistent with the resistance provided by the resistance source, affecting the training effect. Utility Model Content

[0003] In view of the deficiencies existing in the related art, the utility model provides a winding device and a fitness device to solve the problems mentioned in the above background technology.

[0004] The utility model provides a winding device, comprising a winding wheel, a rope and a guide sleeve; wherein:

[0005] The winding wheel comprises a winding section and a guide section arranged along its axial direction, and a spiral guide groove is concavely provided on the outer wall of the guide section;

[0006] The guide sleeve is arranged outside the guide section, and a guide rib matching the guide groove is convexly arranged on the inner wall of the guide sleeve, so that the guide sleeve is threadedly connected with the guide section;

[0007] The rope is wound around the winding section, and one end of the rope is connected to the winding wheel, and the other end is detached from the winding wheel to be connected to the handle assembly used by the user during training;

[0008] When the winding wheel rotates back and forth under the action of external force, the guide section and the guide sleeve are screwed together, so that the winding wheel also reciprocates along its axial direction relative to the guide sleeve, and the rope is pulled out from the winding wheel or reeled back onto the winding wheel.

[0009] In some of the embodiments, a spiral wire accommodating groove is recessed on the outer wall of the winding section, and the pitch and rotation direction of the wire accommodating groove are consistent with those of the guide groove; the groove width of the wire accommodating groove matches the diameter of the rope so that the rope can be wound in the wire accommodating groove.

[0010] In some of the embodiments, the wire accommodating groove and the guide groove are connected to each other smoothly, and all geometric parameters of the wire accommodating groove and the guide groove are consistent.

[0011] In some of the embodiments, the winding device also includes a wire rack, which is arranged across the outside of the winding wheel and has a wire outlet. The rope extends through the wire outlet to be connected to a handle assembly used by the user during training. The position of the wire outlet is opposite to the rope detachment point, and the rope between the detachment point and the wire outlet is located in the tangential direction of the winding wheel. The rope detachment point is the position where the rope detaches from the winding wheel.

[0012] In some of the embodiments, the winding device also includes a pulley block arranged at the wire outlet, the pulley block includes two pulleys arranged side by side, the sliding grooves on the two pulleys are matched to form a wire outlet channel, and the wire outlet channel is opposite to the wire outlet, so that the rope passing through the wire outlet can extend outward after passing through the wire outlet channel.

[0013] In some embodiments, the winding device also includes a base frame and a resistance source; the base frame includes a first support plate and a second support plate arranged opposite to each other; the resistance source is connected to a side of the first support plate away from the second support plate, and the output shaft of the resistance source passes through the first support plate and the second support plate and is rotatably connected thereto; the winding wheel is sleeved on the output shaft of the resistance source, and the winding wheel is slidably connected thereto along the axial direction of the output shaft; the winding section is close to the first support plate, and the guide section is close to the second support plate; the guide sleeve is installed on the base frame.

[0014] In some of the embodiments, the output shaft is inserted into the wheel hole of the winding wheel; the wheel hole is polygonal in shape, and the shape of the output shaft is matched with the shape of the wheel hole.

[0015] In some of the embodiments, a bearing is installed on the second support plate at the penetration point of the output shaft, and the output shaft is inserted into the inner hole of the bearing, so that the output shaft is rotatably connected to the second support plate.

[0016] In some of these embodiments, the source of resistance is a servo motor or a generator.

[0017] In some embodiments, the pulley block further includes two clamping plates arranged opposite to each other, the two clamping plates are connected to the wire rack at the wire outlet, two pulleys are clamped side by side between the two clamping plates, and each pulley is rotatably connected to the two clamping plates via a rotating shaft.

[0018] The utility model also provides a fitness device, comprising the winding device mentioned above.

[0019] Based on the above technical scheme, the winding device and fitness equipment in the embodiment of the utility model can avoid the phenomenon of wire overlap during the rope pulling process and ensure the stability of the rope output, thereby avoiding obvious frustration during the rope pulling process, allowing the user to feel synchronous and consistent resistance, ensuring the continuity of the user's training movements and ensuring the training effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0021] Figure 1 The first is a schematic diagram of the overall structure of the winding device of the utility model;

[0022] Figure 2 This is a second schematic diagram of the overall structure of the winding device of the present invention (the handle assembly is not shown);

[0023] Figure 3 It is a top view of the winding device of the present invention (the handle assembly is not shown);

[0024] Figure 4 for Figure 3 AA section view.

[0025] In the figure:

[0026] 1. Base frame; 11. Bottom plate; 12. First support plate; 13. Second support plate; 14. Bearing seat; 15. Bearing; 2. Resistance source; 21. Output shaft; 3. Winding wheel; 31. Winding section; 32. Wire accommodating groove; 33. Guide section; 34. Guide groove; 4. Guide sleeve; 41. Guide rib; 5. Wire rack; 51. Wire outlet; 6. Rope; 7. Pulley block; 71. Pulley; 72. Wire outlet channel; 73. Clamping plate; 8. Handle assembly. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "up", "down", "top", "bottom", "inside", "outside", "left", "right", "front", "back", "vertical", "horizontal", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] The terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first", "second", etc. may explicitly or implicitly include one or more of the features.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] refer to Figure 1-Figure 4 As shown, the winding device of the utility model comprises a winding wheel 3, a rope 6 and a guide sleeve 4. The winding wheel 3 comprises a winding section 31 and a guide section 33 arranged along its axial direction, and a spiral guide groove 34 is concavely provided on the outer wall of the guide section 33.

[0032] The guide sleeve 4 is sleeved on the guide section 33 of the winding wheel 3 ; a guide rib 41 matching the guide groove 34 is convexly provided on the inner wall of the guide sleeve 4 , so that the guide sleeve 4 and the guide section 33 on the winding wheel 3 are threadedly connected.

[0033] The rope 6 is wound around the winding section 31 of the reel 3, one end of the rope 6 is connected to the reel 3, and the other end of the rope 6 is detached from the reel 3 to be connected to the handle assembly 8 used by the user during training.

[0034] When the winding wheel 3 rotates back and forth under the action of external force, the guide section 33 of the winding wheel 3 and the guide sleeve 4 are screwed together, so that the winding wheel 3 will reciprocate along its axial direction relative to the guide sleeve 4 under the action of the thread rotation, thereby making the winding wheel 3 reciprocate along the axial direction while rotating, and the rope 6 is pulled out from the winding wheel 3 or reeled back onto the winding wheel 3.

[0035] In the above-mentioned illustrative embodiment, by matching the guide section 33 of the winding wheel 3 and the guide sleeve 4, the winding wheel 3 can be rotated and reciprocated axially at the same time, so that the rope 6 can always be wound on the winding wheel 3 in a single-layer spiral shape, thereby avoiding the overlap of the rope 6 during the pulling of the rope 6 and ensuring the stability of the rope 6, thereby avoiding obvious setbacks during the pulling of the rope 6, ensuring the continuity of the user's training movements, and ensuring the training effect.

[0036] refer to Figure 4As shown, in some embodiments, a spiral wire-accommodating groove 32 is recessed on the outer wall of the winding section 31 of the winding wheel 3, and the pitch and rotation direction of the wire-accommodating groove 32 are consistent with those of the guide groove 34. The groove width of the wire-accommodating groove 32 matches the diameter of the rope 6, so that the rope 6 is wound in the wire-accommodating groove 32. Therefore, by setting the wire-accommodating groove 32 on the winding section 31, the rope 6 wound on the winding wheel 3 can be limited, ensuring that the rope 6 can be wound into a spiral shape more smoothly and regularly and accommodated in the wire-accommodating groove 32.

[0037] refer to Figure 4 As shown, in some embodiments, the wire accommodating groove 32 of the winding section 31 and the guide groove 34 of the guide section 33 are connected to each other, and all geometric parameters of the wire accommodating groove 32 and the guide groove 34 are consistent; the geometric parameters include but are not limited to the groove shape, groove depth, groove wall slope, etc. In this way, the wire accommodating groove 32 and the guide groove 34 can be shared, that is, when the rope 6 is pulled out, the wire accommodating groove 32 that has just been separated from the rope 6 is quickly screwed into the guide sleeve 4 to achieve screw-in guidance, and when the rope 6 is wound, the guide groove 34 that has just been screwed out of the guide sleeve 4 is quickly wound with the rope 6 to achieve rope 6 accommodating, thereby optimizing the length of the winding wheel 3, making the overall structure of the winding device more compact, and realizing miniaturized design.

[0038] refer to Figure 1-Figure 4 As shown, in some embodiments, the winding device further comprises a wire rack 5, which is arranged outside the winding wheel 3, and a wire outlet 51 is provided on the wire rack 5; the rope 6 extends through the wire outlet 51 to be connected with the handle assembly 8 used by the user during training. The position of the wire outlet 51 on the wire rack 5 is opposite to the detachment point of the rope 6. It can be understood that the detachment point of the rope 6 is the position where the rope 6 detaches from the winding wheel 3; relative to the winding wheel 3, the position of the detachment point in the axial direction of the winding wheel 3 changes continuously during the process of pulling the rope 6, but relative to the wire outlet 51 of the wire rack 5, the position of the detachment point is fixed; further, the rope 6 between the detachment point and the wire outlet 51 is located in the tangential direction of the winding wheel 3, thereby keeping the angle of the rope 6 between the detachment point and the wire outlet 51 fixed, and preventing the rope 6 from bending when passing through the wire outlet 51, further improving the smoothness of the rope 6 when pulling, minimizing the sense of frustration, and improving the continuity of the user's training movements.

[0039] refer to Figure 1-Figure 3 As shown, in some embodiments, the winding device further includes a pulley block 7 disposed at the wire outlet 51 of the wire frame 5, the pulley block 7 includes two pulleys 71 disposed side by side, the slide grooves on the two pulleys 71 are matched to form a wire outlet channel 72, and the wire outlet channel 72 is directly opposite to the wire outlet 51, so that the rope 6 passing through the wire outlet 51 can extend outward after passing through the wire outlet channel 72, and then connected to the handle assembly 8. Through the setting of the pulley block 7, the wire outlet of the rope 6 is positioned and guided to ensure that the wire outlet angle of the rope 6 is stable, and the wear of the rope 6 when it is reciprocated and pulled is reduced.

[0040] refer to Figure 1-Figure 4 As shown, the winding device also includes a base frame 1 and a resistance source 2. The base frame 1 includes a bottom plate 11, a first support plate 12 and a second support plate 13 connected to the bottom plate 11 and arranged opposite to each other. The distance between the first support plate 12 and the second support plate 13 is greater than the length of the winding wheel 3 to meet the space requirement when the winding wheel 3 moves axially back and forth. The resistance source 2 is connected to the side of the first support plate 12 away from the second support plate 13. The resistance source 2 has an output shaft 21, which passes through the first support plate 12 and the second support plate 13 and is rotatably connected thereto. The winding wheel 3 is sleeved on the output shaft 21 between the first support plate 12 and the second support plate 13, and the winding section 31 is close to the first support plate 12, and the guide section 33 is close to the second support plate 13. When the resistance source 2 is working, it can drive the output shaft 21 to rotate, thereby driving the winding wheel 3 to rotate synchronously, providing resistance for the winding device; it is understandable that it is not necessary to specially make a resistance source 2 with a longer torque shaft, and a longer output shaft 21 can be used to connect with the torque shaft of the resistance source 2 to transmit torque, so as to reduce the cost of the resistance source 2. In addition, the winding wheel 3 is also slidably connected with the output shaft 21 along the axial direction of the output shaft 21, so that when the winding wheel 3 and the output shaft 21 rotate synchronously, the winding wheel 3 also has the conditions for axial movement along the output shaft 21. The guide sleeve 4 and the wire frame 5 are both installed on the bottom plate 11 of the base frame 1, and the wire frame 5 is located between the first support plate 12 and the guide sleeve 4. The rope 6 is connected to the end of the winding wheel 3 close to the first support plate 12.

[0041] It is further explained that when the user overcomes the resistance of the resistance source 2 by using the handle assembly 8 to pull out the rope 6, the pulling force applied by the user drives the winding wheel 3 and the output shaft 21 of the resistance source 2 to rotate synchronously, and at the same time, the winding wheel 3 translates along the axial direction of the output shaft 21 toward the second support plate 13 under the action of the guide sleeve 4, and the rope 6 on the winding wheel 3 gradually detaches from the winding wheel 3, and the length of the rope 6 extending through the outlet 51 on the wire frame 5 increases continuously. Because the winding wheel 3 translates under the action of the threaded rotation of the guide section 33 and the guide sleeve 4, the movement of the winding wheel 3 is stable and controllable, thereby achieving a smooth outlet of the rope 6 and an unchanged position of the outlet 51. ; When the pulling force applied by the user is less than the resistance of the resistance source 2, the resistance source 2 drives the winding wheel 3 to rotate in the opposite direction through its output shaft 21. At the same time, the winding wheel 3 is translated along the axial direction of the output shaft 21 toward the first support plate 12 under the action of the guide sleeve 4, and the rope 6 is gradually wound back onto the winding wheel 3. Because the winding wheel 3 is translated under the threaded rotation of the guide section 33 and the guide sleeve 4, the movement of the winding wheel 3 is stable and controllable, so that the rope 6 can be evenly wound back onto the winding wheel 3 in the same spiral posture as the guide groove 34, thereby avoiding the rope 6 from being wound multiple times at the same axial position of the winding wheel 3, and realizing the single-layer setting of the rope 6 on the winding wheel 3. In summary, when the user is training, he reciprocates and pulls the rope 6, and the winding wheel 3 rotates back and forth while also moving back and forth axially, so that the rope 6 wound on the winding segment 31 of the winding wheel 3 is always in a single-layer spiral shape, which effectively avoids the overlap of the rope 6 during the pulling process, and keeps the pulling radius of the rope 6 stable, that is, the resistance arm is stable. Therefore, the resistance transmitted to the rope 6 by the resistance source 2 will not change due to the change of the arm, and the resistance felt by the user is consistent with the resistance provided by the resistance source 2.

[0042] refer to Figure 1-Figure 4 As shown, in some embodiments, the output shaft 21 of the resistance source 2 is inserted into the wheel hole of the winding wheel 3. The shape of the wheel hole of the winding wheel 3 can be set to a polygon or an irregular shape, and the shape of the output shaft 21 located between the first support plate 12 and the second support plate 13 is adapted to the shape of the wheel hole; in some other embodiments, the shape of the wheel hole of the winding wheel 3 can also be set to a circle, the outer diameter of the output shaft 21 is adapted to the inner diameter of the wheel hole, a transmission key is convexly provided on the outer wall of the output shaft 21, and a transmission groove adapted to the transmission key is opened on the inner wall of the wheel hole along the axial direction of the output shaft 21, and the transmission key is slidably connected in the transmission groove; these matching settings between the winding wheel 3 and the output shaft 21, on the one hand, make the winding wheel 3 and the output shaft 21 rotate synchronously without slipping, realize transmission, and on the other hand, realize the sliding connection between the winding wheel 3 and the output shaft 21, so that the winding wheel 3 can reciprocate along the axial direction of the output shaft 21.

[0043] refer to Figure 1-Figure 4As shown, in some embodiments, a bearing 15 is installed on the second support plate 13 at the penetration of the output shaft 21; specifically, a bearing seat 14 is installed on the second support plate 13, and the bearing 15 is connected to the bearing seat 14. The output shaft 21 of the resistance source 2 is inserted into the inner hole of the bearing 15, so that the output shaft 21 and the second support plate 13 are rotatably connected, and the base frame 1 can stably support the resistance source 2 and the output shaft 21.

[0044] refer to Figure 1-Figure 3 As shown, in some embodiments, the pulley block 7 also includes two clamping plates 73 arranged opposite to each other, the two clamping plates 73 are connected to the wire rack 5 at the outlet 51, and the two pulleys 71 are clamped side by side between the two clamping plates 73, and each pulley 71 is rotatably connected to the two clamping plates 73 via a rotating shaft.

[0045] In some embodiments, the resistance source 2 is a servo motor or a generator, that is, the resistance during training is provided by the servo motor or the generator; the resistance source 2 may also be other devices capable of providing rotational resistance. Furthermore, the rotational torque output by the servo motor is converted into a linear tension of the rope 6; as the user pulls the rope 6, the rope 6 is pulled out from the reel 3 or reeled back onto the reel 3, thereby achieving impedance training.

[0046] refer to Figure 1-Figure 4 As shown, based on the above winding device, the utility model also provides a fitness device, including the above winding device.

[0047] In summary, the winding device and fitness equipment of the present invention can avoid the phenomenon of overlapping wires during the pulling of the rope 6 and ensure the stability of the wire output of the rope 6, thereby avoiding obvious setbacks during the pulling of the rope 6, allowing the user to feel synchronous and consistent resistance, ensuring the continuity of the user's training movements and ensuring the training effect.

[0048] Finally, it should be noted that: the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0049] The above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for which protection is requested in the utility model.

Claims

1. A winding device, characterized in that: It includes a winding wheel, a rope and a guide sleeve; wherein, The winding wheel comprises a winding section and a guide section arranged along its axial direction, and a spiral guide groove is concavely provided on the outer wall of the guide section; The guide sleeve is arranged outside the guide section, and a guide rib matching the guide groove is convexly arranged on the inner wall of the guide sleeve, so that the guide sleeve is threadedly connected with the guide section; The rope is wound around the winding section, and one end of the rope is connected to the winding wheel, and the other end is detached from the winding wheel to be connected to the handle assembly used by the user during training; When the winding wheel rotates back and forth under the action of external force, the guide section and the guide sleeve are screwed together, so that the winding wheel also reciprocates along its axial direction relative to the guide sleeve, and the rope is pulled out from the winding wheel or reeled back onto the winding wheel.

2. The winding device according to claim 1, characterized in that: A spiral wire-accommodating groove is concavely arranged on the outer wall of the winding section, and the pitch and rotation direction of the wire-accommodating groove are consistent with those of the guide groove; the groove width of the wire-accommodating groove matches the diameter of the rope so that the rope can be wound in the wire-accommodating groove.

3. The winding device according to claim 2, characterized in that: The wire accommodating groove and the guide groove are connected to each other smoothly, and all geometric parameters of the wire accommodating groove and the guide groove are consistent.

4. The winding device according to claim 1, characterized in that: The winding device also includes a wire rack, which is arranged across the outside of the winding wheel and has a wire outlet. The rope extends out through the wire outlet to be connected to a handle assembly used by the user during training. The position of the wire outlet is opposite to the rope detachment point, and the rope between the detachment point and the wire outlet is located in the tangential direction of the winding wheel. The rope detachment point is the position where the rope detaches from the winding wheel.

5. The winding device according to claim 4, characterized in that: The winding device also includes a pulley block arranged at the wire outlet, the pulley block includes two pulleys arranged side by side, the sliding grooves on the two pulleys are matched to form a wire outlet channel, and the wire outlet channel is directly opposite to the wire outlet, so that the rope passing through the wire outlet can extend outward after passing through the wire outlet channel.

6. The winding device according to claim 1, characterized in that: The winding device also includes a base frame and a resistance source; the base frame includes a first support plate and a second support plate arranged opposite to each other; the resistance source is connected to a side of the first support plate away from the second support plate, and the output shaft of the resistance source passes through the first support plate and the second support plate and is rotatably connected thereto; the winding wheel is sleeved on the output shaft of the resistance source, and the winding wheel is slidably connected thereto along the axial direction of the output shaft; the winding section is close to the first support plate, and the guide section is close to the second support plate; the guide sleeve is installed on the base frame.

7. The winding device according to claim 6, characterized in that: The output shaft is inserted into the wheel hole of the winding wheel; the shape of the wheel hole is polygonal, and the shape of the output shaft is matched with the shape of the wheel hole.

8. The winding device according to claim 6, characterized in that: A bearing is installed on the second support plate at the penetration point of the output shaft, and the output shaft is inserted into the inner hole of the bearing, so that the output shaft is rotatably connected to the second support plate.

9. The winding device according to claim 6, characterized in that: The resistance source is a servo motor or a generator.

10. A fitness device, characterized in that: The invention comprises the winding device according to any one of claims 1 to 9.