Connecting rod driven magnetic resistance device and fitness equipment

Abstract

The utility model provides a connecting rod-driven magnetic resistance device and fitness equipment. The connecting rod-driven magnetic resistance device comprises a support frame, a magnetic resistance mechanism, a transmission mechanism and a driving mechanism, the magnetic resistance mechanism is arranged on the supporting frame and comprises a resistance wheel and a resistance wheel shaft, and the resistance wheel is fixedly arranged on the resistance wheel shaft and synchronously rotates along with the resistance wheel shaft; the transmission mechanism is arranged on the supporting frame and comprises a transmission wheel set and a transmission piece set, and the transmission piece set is connected with the resistance wheel shaft and the transmission wheel set so that the transmission wheel set and the resistance wheel shaft can rotate synchronously. One end of the driving mechanism is connected with and synchronously rotates with the action end of the fitness equipment, and the other end of the driving mechanism is rotationally connected with the transmission mechanism; in the training process of centripetal movement and centrifugal movement of a user, the transmission mechanism rotates in the same direction.

Description

Technical Field

[0001] This utility model relates to the field of fitness equipment technology, specifically to a linkage-driven magnetic resistance device and fitness equipment. Background Technology

[0002] In recent years, fitness equipment used for strength training has begun to use magnetic flywheels as a resistance source.

[0003] For equipment such as pull-up machines or bicep curl machines, when using flywheels combined with magnetic resistance to provide resistance, two sets of transmission structures are usually used to realize the eccentric and concentric movements during pull-up / bent arm training. When the user switches between concentric and eccentric movements, the resistance is too great, resulting in a poor training experience.

[0004] Therefore, there is an urgent need to develop a magnetoresistive device with a simple structure and smooth training resistance. Utility Model Content

[0005] This invention provides a linkage-driven magnetic resistance device to at least solve the problem of excessive resistance in existing fitness equipment magnetic resistance devices when users switch between centripetal and centrifugal movements.

[0006] To achieve the above objectives, a linkage-driven reluctance device includes:

[0007] Support frame;

[0008] A magnetic reluctance mechanism is mounted on the support frame. The magnetic reluctance mechanism includes a resistance wheel and a resistance wheel shaft. The resistance wheel is fixed on the resistance wheel shaft and rotates synchronously with the resistance wheel shaft.

[0009] A transmission mechanism is mounted on the support frame. The transmission mechanism includes a transmission wheel assembly and a transmission component assembly. The transmission component assembly connects the resistance wheel shaft and the transmission wheel assembly, so that the transmission wheel assembly and the resistance wheel shaft rotate synchronously.

[0010] The drive mechanism has one end connected to the moving end of the fitness equipment and rotates synchronously, and the other end is rotatably connected to the transmission mechanism. The drive mechanism drives the resistance wheel to rotate through the transmission mechanism.

[0011] During the user's training in centripetal and centrifugal movements, the transmission mechanism rotates in the same direction.

[0012] Furthermore, the drive mechanism includes:

[0013] The first link is connected at one end to the moving end of the fitness equipment and rotates synchronously.

[0014] The second link is rotatably connected at one end to the other end of the first link, and rotatably connected at the other end to the transmission mechanism.

[0015] An elastic element, one end of which is fixedly connected to the other end of the second connecting rod, and the other end of which is fixedly connected to the support frame;

[0016] The reciprocating swing of the first link and the elastic element work together to drive the second link to move, thereby causing the transmission mechanism to rotate in the same direction.

[0017] Furthermore, the transmission mechanism includes: a transmission wheel assembly and a transmission component assembly;

[0018] The transmission wheel set includes:

[0019] The drive wheel is rotatably mounted on the support frame via a first drive shaft, and the other end of the second connecting rod is rotatably mounted at an eccentric position on the drive wheel.

[0020] The driven wheel is rotatably mounted on the support frame via a second transmission shaft;

[0021] The transmission component assembly includes:

[0022] The first transmission component connects the transmission drive wheel to the second transmission shaft;

[0023] The second transmission component connects the driven transmission wheel to the resistance wheel shaft.

[0024] Furthermore, the transmission ratio between the driving wheel and the driven wheel is a preset threshold.

[0025] Furthermore, the transmission mechanism also includes:

[0026] The first tensioning part is provided on one side of the drive wheel to adjust the tension of the first transmission component;

[0027] The second tensioning part is provided on one side of the driven wheel to adjust the tension of the second transmission component.

[0028] Furthermore, at least one idler wheel is provided between the driving wheel and the driven wheel, and the idler wheel is rotatably mounted on the support frame via a third drive shaft.

[0029] Furthermore, the magnetoresistive mechanism further includes:

[0030] A ring-shaped magnet array is coaxially fixed to the resistance wheel and rotates synchronously with the resistance wheel.

[0031] The stator winding is fixed to a support plate on one side of the resistance wheel and is coaxially arranged with the annular magnet array.

[0032] Furthermore, the stator winding is connected to a rectifier module, which converts the induced current into direct current.

[0033] Furthermore, the elastic element is a spring.

[0034] This invention provides a fitness device that uses a linkage-driven magnetic resistance device as described above for eccentric and concentric training.

[0035] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0036] This invention employs a magnetic resistance mechanism to provide resistance, effectively avoiding collision noise between the counterweights. It also utilizes a linkage drive structure, where the resistance wheel rotates unidirectionally through the cooperation of the first and second linkages. This solves the problem of excessive resistance when switching between concentric and eccentric movements during high pull training or biceps training, improving the training experience and enhancing training effectiveness.

[0037] This invention integrates the self-generating unit into the magnetoresistive mechanism, eliminating the dependence on external power sources or complex power supply systems, simplifying the overall structure, reducing maintenance difficulty, and expanding application scenarios.

[0038] This invention employs a multi-stage transmission mechanism, which amplifies the rotational speed of the resistance wheel through a preset transmission ratio, enabling the self-generating unit to generate electricity efficiently during low-speed or intermittent upper limb movements. This provides power to the intelligent adjustment of the magnetic resistance unit and the electronic watch components, reducing dependence on external power sources.

[0039] This invention connects the second link and the support frame by setting an elastic element. When the device stops and is at the stop position, the rebound force of the elastic element can help the drive mechanism to disengage from the stop point, ensuring that the unidirectional movement of the second link drive transmission drive wheel always starts smoothly without manual intervention, continuously outputting resistance and significantly improving the user experience. Attached Figure Description

[0040] Figure 1 This is a schematic diagram of the first state structure of the linkage-driven magnetoresistive device of this utility model;

[0041] Figure 2 This is a schematic diagram of the structure of the fitness equipment of this utility model;

[0042] Figure 3 This is a schematic diagram of the second state structure of the linkage-driven magnetoresistive device of this utility model;

[0043] Figure 4 This is a schematic diagram of the third state structure of the linkage-driven magnetoresistive device of this utility model.

[0044] In the above image:

[0045] 1. Support frame; 11. First support rod; 12. Second support rod; 2. Magnetic reluctance mechanism; 21. Resistance wheel; 22. Resistance wheel shaft; 3. Transmission mechanism; 31. Driven transmission wheel; 32. Driven transmission wheel; 33. First transmission component; 34. Second transmission component; 35. First transmission shaft; 36. Second transmission shaft; 37. First tensioning part; 38. Second tensioning part; 4. Drive mechanism; 41. First connecting rod; 42. Second connecting rod; 43. Drive shaft; 44. Eccentric connection point; 5. Elastic element; 6. Idler wheel; 61. Third transmission shaft. Detailed Implementation

[0046] 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.

[0047] In the description of this application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "level," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0048] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0049] like Figures 1-2 As shown, this utility model provides a linkage-driven reluctance device, including: a support frame 1, a reluctance mechanism 2, a transmission mechanism 3, and a drive mechanism 4.

[0050] The support frame 1 includes a first support rod 11 and a second support rod 12.

[0051] In some embodiments, the support frame 1 is fixedly installed inside the fitness equipment by welding or screwing to support the magnetic reluctance device driven by the linkage, thereby integrating the magnetic reluctance device driven by the linkage inside the fitness equipment.

[0052] The magnetic resistance mechanism 2 is mounted on the support frame 1 and includes a resistance wheel 21 and a resistance wheel shaft 22. The resistance wheel 21 is fixed on the resistance wheel shaft 22 and rotates synchronously with the resistance wheel shaft 22.

[0053] The transmission mechanism 3 is mounted on the support frame 1 and includes a transmission wheel set and a transmission component set. The transmission component set connects the resistance wheel shaft 22 and the transmission wheel set, so that the transmission wheel set and the resistance wheel shaft 22 rotate synchronously.

[0054] One end of the drive mechanism 4 is connected to the action end of the fitness equipment and rotates synchronously, while the other end is rotatably connected to the transmission mechanism 3. The drive mechanism 4 drives the resistance wheel 21 to rotate through the transmission mechanism 3. During the training process of the user performing concentric and eccentric movements, the transmission mechanism 3 rotates in the same direction.

[0055] In some embodiments, since the transmission mechanism 3 rotates in the same direction and drives the resistance wheel 21 to rotate unidirectionally during the training process of the user performing concentric movements (such as the muscle contraction phase in high pull training) and eccentric movements (such as the slow lowering phase), the problem of excessive resistance when switching between concentric and eccentric movements is avoided. At the same time, sudden changes in resistance are avoided, making the training process more coherent. Users do not need to adjust their force application mode due to changes in resistance. This is especially suitable for scenarios that require stable resistance in explosive power training or rehabilitation training, improving the training experience and enhancing the training effect.

[0056] Preferably, such as Figures 1-2 As shown, the transmission mechanism 3 includes a transmission wheel assembly and a transmission component assembly. The transmission wheel assembly includes a driving transmission wheel 31 and a driven transmission wheel 32, and the transmission component assembly includes a first transmission component 33 and a second transmission component 34.

[0057] Preferably, the drive wheel 31 is rotatably mounted on the first support rod 11 via the first drive shaft 35, and the driven wheel 32 is rotatably mounted on the second support rod 12 via the second drive shaft 36; the first transmission member 33 connects the drive wheel 31 and the second drive shaft 36, and the second transmission member 34 connects the driven wheel 32 and the resistance wheel shaft 22.

[0058] In some embodiments, the drive wheel 31 is a gear disk, and different gear disks with different gear ratios can be selected according to the corresponding training requirements of the fitness equipment. The first transmission component 33 is a transmission chain, and a driven gear disk is set on the second transmission shaft 36 of the driven wheel 32. The number of teeth of the driven gear disk and the number of teeth of the drive wheel 31 are matched to achieve different transmission ratios.

[0059] In some embodiments, when the drive mechanism 4 drives the drive wheel 31 to rotate, the teeth on the drive wheel 31 mesh with the links of the drive chain. Because the drive chain has a certain degree of rigidity and flexibility, when it is in close engagement with the teeth of the drive wheel 31, the drive chain is driven to perform linear motion as the drive wheel 31 continues to rotate. The linear motion of the drive chain further drives the driven gear disc, which meshes with it, to rotate. Since the driven gear disc is fixed to the second drive shaft 36 of the driven wheel 32, when the driven gear disc rotates, the second drive shaft 36 and the driven wheel 32 mounted on it rotate synchronously.

[0060] In some embodiments, the second transmission member 34 is a belt and is arranged circumferentially around the driven pulley 32.

[0061] In some embodiments, when the driven pulley 32 starts to rotate under the drive of the first transmission member 33, the belt movement drives the resistance wheel shaft 22 to rotate, and the resistance wheel 21 rotates synchronously with the resistance wheel shaft 22, realizing the process of power transmission from the driven pulley 32 to the resistance wheel 21. Throughout the transmission process, the stability, reliability, and efficiency of the belt drive are ensured, meeting the needs of fitness equipment for the rotation of the resistance wheel 21 in different training scenarios.

[0062] Preferably, the transmission ratio between the driving wheel 31 and the driven wheel 32 is a preset threshold.

[0063] In some embodiments, the transmission ratio between the drive wheel 31 and the driven wheel 32 can be adjusted according to different training modes and needs of the fitness equipment.

[0064] Preferably, such as Figures 1-2 As shown, the drive mechanism 4 includes a first link 41 and a second link 42.

[0065] The first link 41 has an actuating end and a connecting end. The actuating end is mounted on the support frame 1 via the drive shaft 43. The first link 41 can swing around the drive shaft 43 within a preset angle.

[0066] In some embodiments, the actuating end of the first link 41 is connected to the user operating end of the fitness equipment via the drive shaft 43.

[0067] One end of the second link 42 is rotatably connected to the connecting end of the first link 41, and the other end is rotatably and eccentrically connected to the drive wheel 31.

[0068] The reciprocating swing of the first link 41 drives the second link 42 to move, thereby driving the transmission drive wheel 31 to rotate and driving the resistance wheel 21 to rotate.

[0069] In some embodiments, by setting the length of the second link 42 and the position of the eccentric connection point 44, i.e., the eccentric distance, the rotation angle of the first link 41 can be adjusted, thereby adjusting the swing angle of the exercise end of the fitness equipment to meet the exercise needs of different equipment.

[0070] In some embodiments, such as Figure 1 and Figures 3-4 As shown, the specific motion process of the drive mechanism 4 is as follows:

[0071] like Figure 1 As shown, Figure 1 This is a schematic diagram of the first state structure of the linkage-driven magnetoresistive device of this utility model. At this time, the user operation end of the fitness equipment is in the highest position, and the linkage-driven magnetoresistive device is in the initial state.

[0072] The first link 41 is in the initial position, and the eccentric connection point 44 between the second link 42 and the drive wheel 31 is located at approximately the 9 o'clock position of the rotation center.

[0073] like Figure 3 As shown, Figure 3 This is a schematic diagram of the second state structure of the linkage-driven reluctance device of this utility model. At this time, the user applies force to pull the user operation end, causing the first linkage 41 to swing clockwise around the drive shaft 43. The second linkage 42 is pulled through the connecting end of the first linkage 41, so that the eccentric connection point 44 between the second linkage 42 and the transmission drive wheel 31 moves in the clockwise direction, driving the transmission drive wheel 31 to rotate clockwise.

[0074] like Figure 4 As shown, Figure 4 This is a schematic diagram of the third state structure of the linkage-driven magnetic reluctance device of this utility model. When the user releases the pulling force, the first linkage 41 swings back to the initial position, and the transmission drive wheel 31 continues to rotate clockwise under the action of inertia. The eccentric connection point 44 between the second linkage 42 and the transmission drive wheel 31 continues to move in the clockwise direction to ensure that the resistance wheel 21 continues to rotate in one direction.

[0075] Preferably, the linkage-driven magnetoresistive device further includes an elastic element 5, one end of which is fixedly connected to the connecting end of the second linkage 42, and the other end is fixedly connected to the support frame 1.

[0076] In some embodiments, during the operation of the linkage-driven reluctance device, the reluctance mechanism 2 has motion inertia and can naturally pass the motion stop point. However, if the linkage mechanism is at the motion stop point when the fitness equipment stops moving, that is, when the eccentric connection point 44 of the second link 42, the connection point between the second link 42 and the first link 41, and the center of the first transmission shaft 35 are on the same straight line, the linkage-driven reluctance device will not be able to start normally.

[0077] Since the elastic element 5 is always in a stretched state and has elastic potential energy, the elastic element 5 will release energy and apply a pulling force to the second link 42 to help the second link 42 smoothly pass the thrust point, avoid the jamming phenomenon, and enable the second link 42 to continuously drive the transmission drive wheel 31 to rotate, thereby ensuring that the resistance wheel 21 rotates continuously and stably.

[0078] Preferably, the transmission mechanism 3 further includes a first tensioning part 37 and a second tensioning part 38.

[0079] The first tensioning part 37 is provided on one side of the transmission drive wheel 31 to adjust the tension of the first transmission member 33;

[0080] The second tensioning part 38 is provided on one side of the driven wheel 32 to adjust the tension of the second transmission member 34.

[0081] In some embodiments, the first tensioning part 37 and the second tensioning part 38 are mainly composed of a tensioning wheel and a spring. When the first transmission member 33 and the second transmission member 34 become loose due to prolonged use, the tensioning wheel can be rotated to tighten the transmission members, thereby increasing the tension of the transmission members.

[0082] Preferably, at least one idler wheel 6 is provided between the drive wheel 31 and the driven wheel 32, and the idler wheel 6 is rotatably mounted on the support frame 1 via a third drive shaft 61.

[0083] In some embodiments, an idler wheel 6 is provided between the drive wheel 31 and the driven wheel 32. The idler wheel 6 is a sprocket and meshes with the first transmission member 33, i.e., the transmission chain. It is used to adjust the tension of the transmission path between the drive wheel 31 and the driven wheel 32 and to balance the transmission torque. The idler wheel 6 can extend the life of the transmission member, reduce the maintenance frequency, balance the torque distribution, and improve the reliability of the transmission mechanism 3 under high-speed or variable load conditions.

[0084] Preferably, the reluctance mechanism 2 further includes an annular magnet array and a stator winding.

[0085] The annular magnet array is coaxially fixed to the resistance wheel 21 and rotates synchronously with the resistance wheel 21.

[0086] The stator winding is fixed to a support plate on one side of the resistance wheel 21 and is coaxially arranged with the annular magnet array.

[0087] In some embodiments, the annular magnet array rotates synchronously with the resistance wheel 21, and the stator winding continuously cuts the magnetic field lines, generating magnetic resistance that hinders the rotation of the resistance wheel 21. At the same time, the stator winding outputs an induced current.

[0088] Preferably, the stator winding is connected to a rectifier module, which converts the induced current into direct current.

[0089] In some embodiments, the rectifier module adopts a full-bridge rectifier structure and integrates an LC filter network to convert AC power into DC power with a ripple factor ≤5%. This DC power can be used to charge energy storage devices via a DC / DC converter or to power low-power devices after voltage regulation, thus achieving energy recovery and utilization. This design achieves contactless resistance regulation through the principle of electromagnetic induction, offering advantages such as fast response speed, high reliability, and low maintenance costs. Simultaneously, the energy recovery function reduces system energy consumption, aligning with energy-saving and environmentally friendly design principles.

[0090] Preferably, the elastic element 5 is a spring.

[0091] This utility model provides a fitness equipment, such as Figure 2 As shown, a linkage-driven magnetoresistive device is used for centrifugal and centripetal training. The specific motion process is the same as described above.

[0092] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A linkage-driven reluctance device, characterized in that, include: Support frame; A magnetic reluctance mechanism is mounted on the support frame. The magnetic reluctance mechanism includes a resistance wheel and a resistance wheel shaft. The resistance wheel is fixed on the resistance wheel shaft and rotates synchronously with the resistance wheel shaft. A transmission mechanism is mounted on the support frame. The transmission mechanism includes a transmission wheel assembly and a transmission component assembly. The transmission component assembly connects the resistance wheel shaft and the transmission wheel assembly, so that the transmission wheel assembly and the resistance wheel shaft rotate synchronously. The drive mechanism has one end connected to the moving end of the fitness equipment and rotates synchronously, and the other end is rotatably connected to the transmission mechanism. The drive mechanism drives the resistance wheel to rotate through the transmission mechanism. During the user's training in centripetal and centrifugal movements, the transmission mechanism rotates in the same direction.

2. The linkage-driven reluctance device according to claim 1, characterized in that, The drive mechanism includes: The first link is connected at one end to the moving end of the fitness equipment and rotates synchronously. The second link is rotatably connected at one end to the other end of the first link, and rotatably connected at the other end to the transmission mechanism. An elastic element, one end of which is fixedly connected to the other end of the second connecting rod, and the other end of which is fixedly connected to the support frame; The reciprocating swing of the first link and the elastic element work together to drive the second link to move, thereby causing the transmission mechanism to rotate in the same direction.

3. The linkage-driven reluctance device according to claim 1, characterized in that, The transmission mechanism includes: a transmission wheel assembly and a transmission component assembly; The transmission wheel set includes: The drive wheel is rotatably mounted on the support frame via a first drive shaft, and the other end of the second connecting rod is rotatably mounted at an eccentric position on the drive wheel. The driven wheel is rotatably mounted on the support frame via a second transmission shaft; The transmission component assembly includes: The first transmission component connects the transmission drive wheel to the second transmission shaft; The second transmission component connects the driven transmission wheel to the resistance wheel shaft.

4. The linkage-driven reluctance device according to claim 3, characterized in that, The transmission ratio between the driving wheel and the driven wheel is a preset threshold.

5. The linkage-driven reluctance device according to claim 3, characterized in that, The transmission mechanism also includes: The first tensioning part is provided on one side of the drive wheel to adjust the tension of the first transmission component; The second tensioning part is provided on one side of the driven wheel to adjust the tension of the second transmission component.

6. The linkage-driven reluctance device according to claim 3, characterized in that, At least one idler wheel is provided between the driving wheel and the driven wheel, and the idler wheel is rotatably mounted on the support frame via a third drive shaft.

7. The linkage-driven reluctance device according to claim 1, characterized in that, The magnetoresistive mechanism further includes: A ring-shaped magnet array is coaxially fixed to the resistance wheel and rotates synchronously with the resistance wheel. The stator winding is fixed to a support plate on one side of the resistance wheel and is coaxially arranged with the annular magnet array.

8. The linkage-driven reluctance device according to claim 7, characterized in that, The stator winding is connected to a rectifier module, which converts the induced current into direct current.

9. The linkage-driven reluctance device according to claim 4, characterized in that, The elastic element is a spring.

10. A fitness equipment, characterized in that, The linkage-driven magnetoresistive device as described in any one of claims 1-9 is used for centrifugal and centripetal training.

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