Flywheel assembly with power generation function

Abstract

The utility model discloses a flywheel assembly with power generation function, it includes inner magnetic control device, flywheel, assembly shaft, flange and power generation device. The flywheel includes flywheel body and conductor, the flywheel body has flywheel cavity and the flywheel center perforation of intercommunication this flywheel cavity, this conductor is fixedly arranged in this flywheel body and is located this flywheel cavity, the assembly shaft passes through the device center perforation of this inner magnetic control device and this flywheel center perforation and can rotate relative to this assembly shaft, the flange is fixedly sleeved in one end of this assembly shaft and is fixedly assembled in this inner magnetic control device, this inner magnetic control device is suspended in the flywheel cavity of this flywheel body, the power generation device includes coil unit and power generation magnet, the position of coil unit relative to this assembly shaft keeps still, the power generation magnet is arranged in this flywheel body, and the coil unit and the power generation magnet all are located the device center perforation.

Description

Technical Field

[0001] This utility model relates to the field of fitness equipment, and in particular to a flywheel assembly with power generation function. Background Technology

[0002] Chinese utility model patent application CN110624207A discloses a transmission resistance control device, which includes a frame. A control mechanism, a transmission mechanism, and an adjustment mechanism are disposed on the frame. The control mechanism includes a first controller and a second controller that are electrically connected to each other. The first controller is configured to receive control information and send it to the second controller. The transmission mechanism includes a flywheel assembly, a belt, and a pulley. The flywheel assembly is connected to the pulley via belt drive. The pulley rotates relative to the frame. An adjustment mechanism is disposed on the flywheel assembly and electrically connected to the second controller. The adjustment mechanism is configured to adjust the resistance of the flywheel assembly according to the instructions issued by the second controller. Specifically, the adjustment mechanism further includes a generator coil assembly and a magnet. The generator coil assembly is mounted to the flywheel assembly's mounting base via two fixing bolts and two fixing pins and is electrically connected to the control mechanism. The generator coil assembly and the magnet magnetically engage. During free riding, the user controls the buttons on the first controller to manipulate the second controller, adjusting the current change of the generator coil assembly. This adjusts the magnetic engagement force between the generator coil assembly and the magnet, thereby regulating the resistance of the flywheel body. Utilizing the belt drive, the transmission resistance of the flywheel body is transmitted to the belt pulley, thus affecting the intensity of the user's pedaling motion during riding. In existing transmission resistance control devices, both the generator coil assembly and the flywheel body need to be mounted on the mounting base, and the generator coil assembly is located on one side of the flywheel body. In other words, these components are not integrated, resulting in a bulky and high-failure-rate transmission resistance control device. Utility Model Content

[0003] One objective of this invention is to provide a flywheel assembly with power generation function, wherein the power generation device, flywheel and internal magnetic control device of the flywheel assembly are integrated, making the flywheel assembly compact in structure, small in size and highly stable.

[0004] One objective of this invention is to provide a flywheel assembly with a power generation function, wherein the power generation coil and the power generation magnet of the power generation device are both located in the central perforation of the inner magnetic control device. This eliminates the need for the power generation device to occupy additional space, thereby reducing the size of the flywheel assembly and making the flywheel assembly more aesthetically pleasing, allowing the flywheel assembly to be compatible with different types of fitness equipment.

[0005] One objective of this invention is to provide a flywheel assembly with power generation function, wherein the edge of the internal magnetic control device forms a heat dissipation space, and when the flywheel assembly provides magnetic resistance, the heat generated by the conductor of the flywheel can be quickly radiated to the outside through the heat dissipation space of the internal magnetic control device, so as to avoid the flywheel assembly from working in a high-temperature environment, thereby improving the reliability and stability of the flywheel assembly.

[0006] One objective of this invention is to provide a flywheel assembly with power generation function, wherein the heat dissipation space is formed in the middle of the internal magnetic control device. When the flywheel assembly provides magnetic resistance, the heat generated by the power generation device can be quickly radiated to the outside through the heat dissipation space of the internal magnetic control device, so as to avoid the flywheel assembly from working in a high-temperature environment, thereby improving the reliability and stability of the flywheel assembly.

[0007] One objective of this invention is to provide a flywheel assembly with power generation function, wherein the internal magnetic control device has convection perforations. The convection perforations not only improve the heat dissipation capacity of the flywheel assembly, but also prevent the heat generated by the conductor from radiating towards the power generation device, thereby improving the reliability and stability of the flywheel assembly.

[0008] One objective of this invention is to provide a flywheel assembly with power generation function, wherein the edge of the internal magnetic control device has a heat dissipation groove to expose the conductor. In this way, when the flywheel assembly provides magnetic resistance, the heat generated by the conductor can be quickly radiated to the outside through the heat dissipation groove of the internal magnetic control device, thereby avoiding the flywheel assembly from operating in a high-temperature environment and improving the reliability and stability of the flywheel assembly.

[0009] According to one aspect of the present invention, the present invention provides a flywheel assembly with power generation function, comprising:

[0010] Assemble the shaft;

[0011] An internal magnetron control device, wherein the internal magnetron control device is fixedly mounted on one end of the assembly shaft;

[0012] A flywheel, wherein the flywheel includes a flywheel body and a conductor, the flywheel body having a flywheel cavity and a central through-hole communicating with the flywheel cavity, the conductor being fixedly disposed on the flywheel body and located in the flywheel cavity, the other end of a mounting shaft passing through the central through-hole of the flywheel body, and the flywheel being rotatable relative to the mounting shaft, wherein an internal magnetron is suspended in the flywheel cavity of the flywheel body; and

[0013] A power generation device, wherein the power generation device includes a coil unit and a power generation magnet, the coil unit being configured to remain stationary relative to the mounting shaft, and the power generation magnet being disposed on the flywheel body, wherein the positions of the coil unit and the power generation magnet are opposite each other in the circumferential direction.

[0014] According to one embodiment of the present invention, the internal magnetic control device has a central through hole, one end of the assembly shaft passes through the central through hole of the internal magnetic control device, and the coil unit and the power generation magnet are both located in the central through hole of the internal magnetic control device.

[0015] According to one embodiment of the present invention, the flywheel assembly includes a flange, which is fixedly fitted onto one end of the assembly shaft and fixedly assembled onto the inner magnetoresistive device. The flange and the assembly shaft cooperate with each other to suspend the inner magnetoresistive device in the flywheel cavity of the flywheel body.

[0016] According to one embodiment of the present invention, the internal magnetic control device is locked to one end of the assembly shaft.

[0017] According to one embodiment of the present invention, the internal magnetron sputtering device has a heat dissipation space, which extends through opposite sides of the internal magnetron sputtering device in the thickness direction.

[0018] According to one embodiment of the present invention, the heat dissipation space of the internal magnetron sputtering device is located at the edge of the internal magnetron sputtering device.

[0019] According to one embodiment of the present invention, the flywheel body has a flywheel heat dissipation hole, the flywheel heat dissipation hole connects the flywheel cavity and the external environment, wherein the position of the heat dissipation space of the internal magnetic control device corresponds to the rotation path of the flywheel heat dissipation hole of the flywheel body.

[0020] According to one embodiment of the present invention, the inner magnetocontrol device has convection perforations. In the thickness direction of the inner magnetocontrol device, the convection perforations penetrate through opposite sides of the inner magnetocontrol device. From a top view, the convection perforations are located between the central perforation of the device and the edge of the inner magnetocontrol device.

[0021] According to one embodiment of the present invention, the internal magnetron device has a heat dissipation groove formed by thinning a portion of the edge of the internal magnetron device, and in the circumferential direction, a portion of the conductor is exposed to the heat dissipation groove of the internal magnetron device.

[0022] According to one embodiment of the present invention, the flange includes a flange body, a transverse extension arm integrally extending from the flange body, and a longitudinal extension arm integrally extending from the flange body. The flange body is fixedly fitted onto the assembly shaft. The transverse extension arm is fixedly fitted onto the inner magnetizer. The longitudinal extension arm extends to the device center through hole of the inner magnetizer. The coil unit is fixedly fitted onto the longitudinal extension arm so that the flange configures the coil unit to remain stationary relative to the assembly shaft. The flywheel body has an assembly ring that surrounds the assembly shaft and extends to the device center through hole of the inner magnetizer. The power generation magnet is disposed on the assembly ring of the flywheel body.

[0023] According to one embodiment of the present invention, the flange includes a flange body and a transverse extension arm integrally extending from the flange body. The flange body is fixedly fitted onto the assembly shaft, the transverse extension arm is fixedly assembled onto the internal magnetocontrol device, and the coil unit is fixedly disposed on the internal magnetocontrol device so that the coil unit is configured by the internal magnetocontrol device to remain stationary relative to the assembly shaft. The flywheel body has an assembly ring that surrounds the assembly shaft and extends to the central perforation of the device of the internal magnetocontrol device. The power-generating magnet is disposed on the assembly ring of the flywheel body.

[0024] According to one embodiment of the present invention, the internal magnetic control device includes a housing, a drive motor, a swing arm, a control magnet, a transmission unit, and a circuit board. The housing includes a bottom shell and a top cover, and a side opening communicating with the housing space. The top cover includes a plate cover and a flange cover. The plate cover is installed on the bottom shell to form a portion of the housing space between the plate cover and the bottom cover. The flange cover is installed on the bottom shell to form another portion of the housing space and the side opening between the plate cover and the bottom shell. The drive motor is clamped in the... Between the bottom shell and the flange cover, the opposite sides of the pivot end of the swing arm are rotatably mounted to the edge of the bottom shell and the edge of the flange cover, respectively, so that the swing arm is rotatably held at the side opening of the housing. The control magnet is disposed on the swing arm. The transmission unit is disposed in the housing space of the housing and the transmission unit connects the worm gear of the drive motor and the driven end of the swing arm. The circuit board is disposed in the housing space of the housing and located below the plate cover. The drive motor and the coil unit are respectively connected to the circuit board.

[0025] According to one embodiment of the present invention, the flange cover has a plurality of radial reinforcing ribs and a plurality of circumferential reinforcing ribs, the radial reinforcing ribs extending from the inner edge to the outer edge of the flange cover respectively, and the circumferential reinforcing ribs intersecting the radial reinforcing ribs respectively. Attached Figure Description

[0026] Figure 1 This is a perspective view of a flywheel assembly according to the first preferred embodiment of the present invention.

[0027] Figure 2 This is a perspective view of the flywheel assembly according to the above-described preferred embodiment of the present invention.

[0028] Figure 3 This is an exploded view of the flywheel assembly according to the above-described preferred embodiment of the present invention.

[0029] Figure 4 This is an exploded view of the flywheel assembly according to the above-described preferred embodiment of the present invention.

[0030] Figure 5 This is a cross-sectional schematic diagram of the flywheel assembly according to the above-described preferred embodiment of the present invention.

[0031] Figure 6 This is an exploded view of an internal magnetic control device of the flywheel assembly according to the above-described preferred embodiment of the present invention.

[0032] Figure 7 This is an exploded view of the internal magnetic control device of the flywheel assembly according to the above-described preferred embodiment of the present invention.

[0033] Figure 8 This is a partial schematic diagram of the flywheel assembly according to the above-described preferred embodiment of the present invention.

[0034] Figure 9 This is a cross-sectional schematic diagram of a modified example of the flywheel assembly according to the above-described preferred embodiment of the present invention.

[0035] Figure 10 This is a cross-sectional schematic diagram of another modified example of the flywheel assembly according to the above-described preferred embodiment of the present invention.

[0036] Figure 11 This is a cross-sectional schematic diagram of another modified example of the flywheel assembly according to the above-described preferred embodiment of the present invention.

[0037] Figure 12 This is a perspective view of a flywheel assembly according to the second preferred embodiment of the present invention.

[0038] Figure 13 This is a perspective view of the flywheel assembly according to the above-described preferred embodiment of the present invention.

[0039] Figure 14 This is a top view schematic diagram of the flywheel assembly according to the above-described preferred embodiment of the present invention.

[0040] Figure 15 This is a cross-sectional schematic diagram of the flywheel assembly according to the above-described preferred embodiment of the present invention.

[0041] Figure 16 This is a perspective view of a flywheel assembly according to a third preferred embodiment of the present invention.

[0042] Figure 17 This is a perspective view of the flywheel assembly according to the above-described preferred embodiment of the present invention.

[0043] Figure 18 This is an exploded view of the flywheel assembly according to the above-described preferred embodiment of the present invention.

[0044] Figure 19 This is an exploded view of the flywheel assembly according to the above-described preferred embodiment of the present invention.

[0045] Figure 20 This is a cross-sectional schematic diagram of the flywheel assembly according to the above-described preferred embodiment of the present invention.

[0046] Figure 21 This is a perspective view of an internal magnetic control device of the flywheel assembly according to the above-described preferred embodiment of the present invention.

[0047] Figure 22 This is a perspective view of the internal magnetic control device of the flywheel assembly according to the above-described preferred embodiment of the present invention.

[0048] Figure 23 This is an exploded view of the internal magnetic control device of the flywheel assembly according to the above-described preferred embodiment of the present invention.

[0049] Figure 24 This is an exploded view of the internal magnetic control device of the flywheel assembly according to the above-described preferred embodiment of the present invention.

[0050] Figure 25 This is an exploded view of the internal magnetic control device of the flywheel assembly according to the above-described preferred embodiment of the present invention. Detailed Implementation

[0051] Before describing any embodiment of this invention in detail, it should be understood that the invention is not limited in its application to the details of the construction and arrangement of the components set forth in the following description or illustrated in the following figures. The invention is capable of other embodiments and can be practiced or carried out in various ways. Furthermore, it should be understood that the wording and terminology used herein are for descriptive purposes and should not be considered limiting. The use of “comprising” or “having” and variations thereof herein is intended to cover the items set forth below and their equivalents, as well as any additional items. Unless otherwise specified or limited, the terms “installation,” “connection,” “support,” and “linkage,” and variations thereof are used broadly and cover both direct and indirect installation, connection, support, and linking. Moreover, “connection” and “linkage” are not limited to physical or mechanical connections or links.

[0052] Furthermore, firstly, in the disclosure of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, the above terms should not be construed as a limitation on this utility model. Secondly, the term "a" should be understood as "at least one" or "one or more," that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. The term "a" should not be construed as a limitation on the quantity.

[0053] Refer to the accompanying drawings of the specification of this utility model. Figures 1 to 8 A flywheel assembly with power generation function according to a first preferred embodiment of the present invention will be disclosed and described below. This flywheel assembly is used to assemble fitness equipment, and when a user exercises with the equipment, the flywheel assembly generates electricity while providing magnetic resistance. Specifically, the flywheel assembly includes a flywheel 10, an internal magnetic control device 20, an assembly shaft 30, a flange 40, and a power generation device 50.

[0054] Reference Appendix Figures 3 to 5 The flywheel 10 includes a flywheel body 11 and a conductor 12. The flywheel body 11 has a flywheel cavity 111 and a flywheel center through hole 112 communicating with the flywheel cavity 111. The conductor 12 is fixedly disposed on the flywheel body 11 and the conductor 12 is located in the flywheel cavity 111 of the flywheel body 11.

[0055] Specifically, in this particular example of the flywheel assembly of this utility model, the flywheel body 11 includes a disc 113 and a ring 114 integrally extending along the edge of the disc 113. The flywheel cavity 111 of the flywheel body 11 is formed between the disc 113 and the ring 114, and the flywheel center through hole 112 of the flywheel body 11 is formed in the disc 113. The conductor 12 is fixedly disposed on the inner wall of the ring 114, such that the conductor 12 is fixedly disposed on the flywheel body 11 and the conductor 12 is located in the flywheel cavity 111 of the flywheel body 11.

[0056] It is worth mentioning that the specific manner in which the conductor 12 is fixedly disposed on the inner wall of the ring 114 is not limited in the flywheel assembly of this utility model. For example, in the appendix Figures 1 to 8 In this specific example of the flywheel assembly shown, the conductor 12 is annular, and the outer diameter of the conductor 12 is the same as the inner diameter of the rim 114. Based on the friction between the outer wall of the conductor 12 and the inner wall of the rim 114, the conductor 12 can be fixedly disposed on the rim 114. Preferably, in some embodiments of the flywheel assembly of this invention, the conductor 12 may be an aluminum ring.

[0057] Continue to refer to the appendix Figures 3 to 5 The internal magnetoresistive device 20 has a central through-hole 201, through which the mounting shaft 30 passes and the flywheel central through-hole 112 of the flywheel body 11. The flywheel 10 is rotatable relative to the mounting shaft 30. A flange 40 is fixedly fitted onto one end of the mounting shaft 30 and fixedly mounted to the internal magnetoresistive device 20. The flange 40 and the mounting shaft 30 cooperate to suspend the internal magnetoresistive device 20 in the flywheel cavity 111 of the flywheel body 11. When the flywheel 10 is driven to rotate relative to the internal magnetoresistive device 20, the conductor 12 cuts the magnetic field lines of the internal magnetoresistive device 20 to generate eddy currents, thereby providing magnetic resistance to the flywheel assembly. That is, the flywheel 10 is rotatably mounted on one end of the assembly shaft 30, the inner magnetic control device 20 is fixedly mounted on the other end of the assembly shaft 30, and the inner magnetic control device 20 is suspended in the flywheel cavity 111 of the flywheel body 11 of the flywheel 10.

[0058] In other words, the internal magnetocontrol device 20 has a magnetic field, and at least a portion of the conductor 12 is located within the magnetic field range of the internal magnetocontrol device 20, so that when the flywheel 10 is driven to rotate relative to the internal magnetocontrol device 20, the conductor 12 can cut the magnetic field lines of the internal magnetocontrol device 20 to generate eddy currents, so that the flywheel assembly provides magnetic resistance to help the user exercise with the fitness equipment.

[0059] In the appendix Figures 1 to 8 In this specific example of the flywheel assembly of the present invention, the flywheel assembly includes a plurality of bearings 60. The inner sides 61 of these bearings 60 are fixedly fitted onto the assembly shaft 30 at different positions, and the outer sides 62 of these bearings 60 are fixedly disposed on the flywheel body 11 at different positions. Thus, these bearings 60 rotatably fit the flywheel 10 onto the assembly shaft 30, so that the flywheel 10 is rotatable relative to the assembly shaft 30.

[0060] Furthermore, the flywheel assembly includes a retaining ring 70, which is snapped onto the assembly shaft 30. From a top view, the retaining ring 70 and the inner bearing side 61 of the bearing 60 overlap, thereby preventing the bearing 60 from moving along the extension direction of the assembly shaft 30. Specifically, the inner side of the retaining ring 70 is engaged in a groove in the assembly shaft 30, and the outer side abuts against the inner bearing side 61 of the bearing 60, thus preventing the bearing 60 from moving along the extension direction of the assembly shaft 30.

[0061] Specifically, see the attached document. Figures 3 to 7 The internal magnetic control device 20 includes a housing 21, a drive motor 22, a swing arm 23, a set of control magnets 24, and a transmission unit 25. The drive motor 22 is disposed on the housing 21. The swing arm 23 has a pivoting end 231 and a driven end 232 facing each other. The pivoting end 231 of the swing arm 23 is rotatably mounted on the edge of the housing 21. The control magnets 24 are disposed on the outer side of the swing arm 23 and are used to provide a magnetic field. The transmission unit 25 connects the worm gear 221 of the drive motor 22 and the driven end 232 of the swing arm 23. The internal magnetic control device 20 is suspended in the flywheel cavity 111 of the flywheel body 11 with the control magnets 24 and the conductor 12 facing each other.

[0062] When the worm gear 221 of the drive motor 22 rotates in one direction, the transmission unit 25 transmits power to the swing arm 23, causing the swing arm 23 to drive the control magnet 24 to swing towards the conductor 12. At this time, when the flywheel 10 is driven to rotate relative to the internal magnetic control device 20, the magnetic resistance provided by the flywheel assembly is increased. Correspondingly, when the worm gear 221 of the drive motor 22 rotates in another direction, the transmission unit 25 transmits power to the swing arm 23, causing the swing arm 23 to drive the control magnet 24 to swing away from the conductor 12. At this time, when the flywheel 10 is driven to rotate relative to the internal magnetic control device 20, the magnetic resistance provided by the flywheel assembly is decreased.

[0063] In other words, by controlling the rotation direction of the worm 221 of the drive motor 22, the flywheel assembly can control the swing arm 23 and the control magnet 24 to swing toward or away from the conductor 12, thereby adjusting the magnetic resistance provided by the flywheel assembly.

[0064] Further, the transmission unit 25 includes a first gear 251, a second gear 252, a third gear 253, a sector gear 254, and a connecting rod 255. The first gear 251, second gear 252, third gear 253, and sector gear 254 are all rotatably mounted on the housing 21. The first gear 251 meshes with the worm gear 221 of the drive motor 22, the second gear 252 meshes with the first gear 251, the third gear 253 meshes with the second gear 252, and the sector gear 254 meshes with the third gear 251. 53. The two ends of the connecting rod 255 are rotatably mounted on the sector gear 254 and the driven end 232 of the swing arm 23, respectively. Thus, when the worm gear 221 of the drive motor 22 rotates, the worm gear 221 of the drive motor 22 drives the first gear 251, the second gear 252, the third gear 253 and the sector gear 254 to rotate in sequence. The sector gear 254 drives the driven end 232 of the swing arm 23 through the connecting rod 255, so that the swing arm 23 drives the control magnet 24 to swing toward or away from the conductor 12.

[0065] Preferably, refer to the appendix Figure 4 , Figure 6 and Figure 7The internal magnetic control device 20 further includes a potentiometer 26. The fixed portion of the potentiometer 26 is mounted on the housing 21, and the movable portion of the potentiometer 26 is mounted on the sector gear 254. When the worm gear 221 of the drive motor 22 drives the first gear 251, the second gear 252, the third gear 253, and the sector gear 254 to rotate sequentially, the sector gear 254 drives the movable portion of the potentiometer 26 to rotate, thereby changing the resistance value of the potentiometer 26. It is understood that the resistance value of the potentiometer 26 is related to the swing position of the swing arm 23. Therefore, the flywheel assembly can determine the position of the swing arm 23 and the control magnet 24 by detecting the resistance value of the potentiometer 26. In this way, the magnetic resistance provided by the flywheel assembly can be effectively controlled.

[0066] Continue to refer to the appendix Figures 3 to 7 The outer casing 21 includes a bottom shell 211 and a top cover 212, and the outer casing 21 has a housing space 213 and a side opening 214. The top cover 212 is mounted on the bottom shell 211 to form the housing space 213 and the side opening 214 of the outer casing 21 between the bottom shell 211 and the top cover 212. The drive motor 22, the swing arm 23 and the transmission unit 25 are respectively disposed in the housing space 213 of the outer casing 21, and the swing arm 23 is adjacent to the side opening 214 of the outer casing 21. The side opening 214 of the outer casing 21 faces the conductor 12, so that the control magnet 24 and the conductor 12 can face each other. Specifically, the drive motor 22 is clamped by the bottom shell 211 and the top cover 212, so that the drive motor 22 is reliably disposed in the housing space 213 of the outer shell 21. The opposite sides of the pivot end 231 of the swing arm 23 are rotatably mounted on the bottom shell 211 and the top cover 212, so that the swing arm 23 is swingably disposed on the edge of the outer shell 21 adjacent to the side opening 214. The opposite sides of the first gear 251, the second gear 252, the third gear 253 and the sector gear 254 of the transmission unit 25 are rotatably mounted on the bottom shell 211 and the top cover 212, so that the first gear 251, the second gear 252, the third gear 253 and the sector gear 254 are reliably disposed in the housing space 213 of the outer shell 21.

[0067] It is worth mentioning that the mounting method of the bottom shell 211 and the top cover 212 is not limited in the flywheel assembly of this utility model. For example, in the attached... Figures 1 to 8In this specific example of the flywheel assembly shown, the bottom shell 211 and the top cover 212 can be mounted to each other using a set of screws.

[0068] Reference Appendix Figures 5 to 7 The bottom shell 211 has a bottom shell center hole 2110, and the top cover 212 has a top cover center hole 2120. The positions of the bottom shell center hole 2110 of the bottom shell 211 and the top cover center hole 2120 of the top cover 212 are opposite to each other, so that the bottom shell center hole 2110 of the bottom shell 211 and the top cover center hole 2120 of the top cover 212 form the device center through hole 201 of the inner magnetic control device 20.

[0069] Reference Appendix Figures 6 to 8 The internal magnetic control device 20 includes a circuit board 27, which is disposed on the housing 21 and located in the housing space 213 of the housing 21, making the circuit board 27 visually invisible. The drive motor 22 and the potentiometer 26 are respectively connected to the circuit board 27. The circuit board 27 can control the operating state of the drive motor 22 according to the resistance signal fed back by the potentiometer 26. That is, the circuit board 27 integrates control functions; for example, the circuit board 27 may be fitted with logic chips or have logic circuits, so that the circuit board 27 can control the operating state of the drive motor 22 according to the resistance signal fed back by the potentiometer 26. Specifically, the circuit board 27 can be screwed onto the bottom shell 211 to reliably house the circuit board 27 in the housing space 213 of the housing 21.

[0070] Furthermore, the bottom shell 211 has an outer receiving groove 2111, a pivot hole 2112, and a wire hole 2113. The pivot hole 2112 and the wire hole 2113 of the bottom shell 211 are respectively connected to the outer receiving groove 2111 and the housing space 213 of the outer shell 21. The fixed part of the potentiometer 26 is received in the outer receiving groove 2111 of the bottom shell 211, and the movable part of the potentiometer 26 is installed on the sector gear 254 after passing through the pivot hole 2112 of the bottom shell 211. The internal magnetic control device 20 includes a wire 28. One end of the wire 28 is connected to the fixed part of the potentiometer 26, and the other end extends to the housing space 213 of the outer shell 21 after passing through the wire hole 2113 of the bottom shell 211. The wire 28 is connected to the circuit board 27. It is understood that the drive motor 22 is connected to the circuit board 27 via another wire 28, so that the circuit board 27 can control the working state of the drive motor 22 according to the resistance signal fed back by the potentiometer 26.

[0071] Preferably, the bottom shell 211 has an outer limiting protrusion 2114 and an inner limiting protrusion 2115, which protrude towards the shell space 213 of the outer shell 21. The top cover 212 has an outer limiting protrusion 2121 and an inner limiting protrusion 2122, which protrude towards the shell space 213 of the outer shell 21. The position of the protrusion 2114 corresponds to the position of the outer limit protrusion 2121 of the top cover 212 and is located outside the swing arm 23. It is used to limit the maximum distance of the swing arm 23 to swing outward and prevent the control magnet 24 from colliding with the conductor 12. The position of the inner limit protrusion 2115 of the bottom shell 211 corresponds to the position of the inner limit protrusion 2122 of the top cover 212 and is located inside the swing arm 23. It is used to limit the maximum distance of the swing arm 23 to swing inward and prevent the swing arm 23 from colliding with the circuit board 27.

[0072] Reference Appendix Figures 3 to 5 The power generation device 50 includes a coil unit 51 and at least one power generation magnet 52. The coil unit 51 is configured to remain stationary relative to the assembly shaft 30. The power generation magnet 52 is disposed on the flywheel body 11, allowing it to rotate with the flywheel 10. In the circumferential direction, the positions of the coil unit 51 and the power generation magnet 52 are opposite each other, and both are located in the central through-hole 201 of the inner magnetic control device 20. When the flywheel 10 is driven to rotate relative to the inner magnetic control device 20, the power generation magnet 52 rotates around the coil unit 51, at which point the coil unit 51 generates current, enabling the flywheel assembly to generate electricity. It is understood that the circumferential direction is the direction of rotation of the flywheel 10.

[0073] Reference Appendix Figure 3 In the flywheel assembly of this utility model, the coil unit 51 and the magnet 52 for power generation of the power generation device 50 are both located in the central through hole 201 of the inner magnetic control device 20. This means that the power generation device 50 does not need to occupy additional space, which helps to reduce the volume of the flywheel assembly and makes the appearance of the flywheel assembly neat, so that the flywheel assembly can be matched with different types of fitness equipment.

[0074] Continue to refer to the appendix Figures 3 to 5 , Figure 8The coil unit 51 includes a coil support 511 and a plurality of coils 512. The coil support 511 has an even number of winding teeth 5111, and each winding tooth 5111 is wound with one coil 512. The coil support 511 is fixedly mounted on the flange 40, which allows the coil unit 51 to be configured to remain stationary relative to the mounting shaft 30. Preferably, the coils 512 are connected to the circuit board 27, so that the electrical energy generated by the power generation device 50 can be used to drive the drive motor 22. It is understood that since the coil unit 51 is fixedly mounted on the flange 40, and the flange 40 is fixedly mounted on the internal magnetic control device 20, the relative positions of the coil unit 51 and the circuit board 27 remain stationary, thus facilitating the connection between the coil 512 and the circuit board 27. Optionally, in other examples of the flywheel assembly of the present invention, the flywheel assembly may further include a rechargeable battery connected to the circuit board 27, and the electrical energy generated by the power generation device 50 can be stored in the rechargeable battery.

[0075] Specifically, in the appendix Figures 1 to 8 In this specific example of the flywheel assembly of the present invention shown, the flange 40 includes a flange body 41, at least one lateral extension arm 42, and a longitudinal extension arm 43. The lateral extension arm 42 and the longitudinal extension arm 43 extend integrally from the flange body 41 in different directions, respectively. The flange body 41 is fixedly fitted onto the assembly shaft 30, and the lateral extension arm 42 is fixedly mounted onto the internal magnetic control device 20. For example, screws can be used to lock the lateral extension arm 42 and the internal magnetic control device 20 to ensure that... The lateral extension arm 42 is fixedly mounted to the inner magnetron device 20, and the longitudinal extension arm 43 extends to the device center through hole 201 of the inner magnetron device 20. The coil support 511 of the coil unit 51 is fixedly fitted onto the longitudinal extension arm 43 of the flange 40, such that the longitudinal extension arm 43 of the flange 40 enables the coil unit 51 to be positioned relative to the mounting shaft 30 and to be positioned in the device center through hole 201 of the inner magnetron device 20.

[0076] The flywheel body 11 further includes an assembly ring 115, which extends from the disc 113 to the central through hole 201 of the inner magnetic control device 20, and surrounds the assembly shaft 30. The power-generating magnet 52 is disposed in the assembly ring 115 of the flywheel body 11. Thus, the assembly ring 115 of the flywheel body 11 is used to position the power-generating magnet 52 in the central through hole 201 of the inner magnetic control device 20, such that the position of the power-generating magnet 52 corresponds circumferentially to the position of the coil unit 51. Therefore, when the flywheel 10 is driven to rotate relative to the inner magnetic control device 20, the power-generating magnet 52 rotates around the coil unit 51, causing the power generation device 50 to generate electricity. Preferably, the assembly ring 1151 has an annular groove 1151, and the power-generating magnet 52 is located in the annular groove 1151 of the assembly ring 115.

[0077] Preferably, in this specific example of the flywheel assembly of the present invention, there are multiple power-generating magnets 52, which are arranged in a ring on the assembly ring 115 of the flywheel body 11.

[0078] It is understood that when the flywheel 10 is driven to rotate relative to the inner magnetocontrol device 20, causing the conductor 12 to cut the magnetic field lines of the inner magnetocontrol device 20 and generate eddy currents, the conductor 12 will generate a large amount of heat. In the flywheel assembly of this invention, in order to achieve rapid heat dissipation of the flywheel assembly, the inner magnetocontrol device 20 is provided with at least one heat dissipation space 202 at its edge. In the thickness direction of the inner magnetocontrol device 20, the heat dissipation space 202 extends through the opposite sides of the inner magnetocontrol device 20. A portion of the conductor 12 is exposed in the heat dissipation space 202 of the inner magnetocontrol device 20, so that the heat generated by the conductor 12 when cutting the magnetic field lines of the inner magnetocontrol device 20 can be rapidly radiated to the external environment through the heat dissipation space 202 of the inner magnetocontrol device 20, thereby achieving rapid heat dissipation of the flywheel assembly.

[0079] Reference Appendix Figure 3 and Figure 4In this specific example of the flywheel assembly of this utility model, the inner magnetron device 20 is recessed from its edge toward the central through-hole 201 to form the heat dissipation space 202. Thus, a portion of the conductor 12 is exposed in the heat dissipation space 202 of the inner magnetron device 20, allowing the heat generated when the conductor 12 cuts the magnetic lines of the inner magnetron device 20 to be rapidly radiated to the external environment through the heat dissipation space 202, thereby achieving rapid heat dissipation of the flywheel assembly. Preferably, the heat dissipation space 202 of the inner magnetron device 20 is fan-shaped.

[0080] Specifically, the bottom shell 211 has a fan-shaped bottom shell notch 2116 at its edge, and the top cover 212 has a fan-shaped top cover notch 2123 at its edge. The positions of the bottom shell notch 2116 of the bottom shell 211 and the top cover notch 2123 of the top cover 212 correspond, so that the bottom shell notch 2116 of the bottom shell 211 and the top cover notch 2123 of the top cover 212 form the heat dissipation space 202 of the internal magnetic control device 20. Preferably, in the attached... Figures 1 to 8 In this specific example of the flywheel assembly shown, the housing space 213 of the outer casing 21 is connected to the heat dissipation space 202 of the inner magnetoresistive device 20. Thus, when the flywheel 10 is driven to rotate relative to the inner magnetoresistive device 20, the heat generated by the conductor 12 can be rapidly radiated through the housing space 213 of the outer casing 21 to the heat dissipation space 202 of the inner magnetoresistive device 20, and further radiated to the external environment through the heat dissipation space 202, thereby achieving rapid heat dissipation of the flywheel assembly. Specifically, the outer casing 21 forms a through-hole 215 between the bottom shell 211 and the top cover 212, and the through-hole 215 connects the housing space 213 and the heat dissipation space 202.

[0081] Continue to refer to the appendix Figures 1 to 5 , Figure 8The flywheel body 11 has a disk 113 with at least one flywheel heat dissipation hole 1131. The flywheel heat dissipation hole 1131 connects the flywheel cavity 111 of the flywheel body 11 to the external environment. The position of the heat dissipation space 202 of the internal magnetic control device 20 corresponds to the rotation path of the flywheel heat dissipation hole 1131 of the disk 113 of the flywheel body 11. Thus, when the flywheel 10 is driven to generate heat relative to the internal magnetic control device 20, the spaces on opposite sides of the flywheel assembly can achieve convection through the flywheel heat dissipation hole 1131 of the disk 113 of the flywheel body 11 and the heat dissipation space 202 of the internal magnetic control device 20, thereby achieving rapid heat dissipation of the flywheel assembly. Preferably, the disk 113 has multiple flywheel heat dissipation holes 1131, which are arranged in a ring around the mounting shaft 30.

[0082] It is understandable that when the flywheel 10 is driven to rotate relative to the internal magnetic control device 20, causing the power generation device 50 to generate electricity, the power generation device 50 will generate a large amount of heat. In the flywheel assembly of this utility model, in order to achieve rapid heat dissipation of the flywheel assembly, the central through-hole 201 of the internal magnetic control device 20 forms the heat dissipation space 202. To avoid the flange 40 from obstructing the heat dissipation space 202 formed by the central through-hole 201 of the internal magnetic control device 20, the number of the lateral extension arms 42 of the flange 40 is implemented to be two or more, for example, in the attached... Figures 1 to 8 In this specific example of the flywheel assembly of the present invention, the flange 40 has three lateral extension arms 42, which are spaced apart to form a notch 44 in the flange 40 between any two lateral extension arms 42. Each of the lateral extension arms 42 of the flange 40 can be screwed to the inner magnetocontrol device 20. The position of the notch 44 of the flange 40 is opposite to the position of the central through hole 201 of the inner magnetocontrol device 20, so that the heat dissipation space 202 formed by the central through hole 201 of the inner magnetocontrol device 20 is connected to the external environment through the notch 44 of the flange 40. In this way, the heat generated by the power generation device 50 can be quickly radiated to the external environment through the heat dissipation space 202 formed by the central through hole 201 of the inner magnetocontrol device 20 and the notch 44 of the flange 40, thereby achieving rapid heat dissipation of the flywheel assembly.

[0083] Appendix Figure 9 A modified example of the flywheel assembly of this invention is shown, with reference to the appendix. Figures 1 to 8 The flywheel assembly shown differs from the one in that, in the attached Figure 9In this specific example of the flywheel assembly of the present invention shown, the coil unit 51 is fixedly disposed on the inner magnetoresistive device 20 so that the inner magnetoresistive device 20 configures the coil unit 51 to remain stationary relative to the mounting shaft 30. Specifically, the edge of the top cover 212 of the housing 21 defining the top cover center hole 2120 has a top cover ring 2124, the top cover ring 2124 extending toward the bottom shell center hole 2110 of the bottom shell 211. The coil support 511 of the coil unit 51 is fixedly fitted onto the top cover ring 2124 of the top cover 212, so that the coil unit 51 is fixedly disposed on the inner magnetoresistive device 20, thereby configuring the coil unit 51 to remain stationary relative to the mounting shaft 30 by the inner magnetoresistive device 20. It is understood that, in the appendix... Figure 9 In this example of the flywheel assembly shown, the power-generating magnet 52 is wrapped around the outside of the coil unit 51.

[0084] Optionally, in the appendix Figure 10 In this specific example of the flywheel assembly shown, the coil unit 51 may also be fixedly disposed on the bottom shell 211 of the housing 21 of the inner magnetizer 20, so that the inner magnetizer 20 configures the coil unit 51 to remain stationary relative to the mounting shaft 30, wherein the coil unit 51 surrounds the outside of the power generation magnet 52.

[0085] Appendix Figure 11 A modified example of the flywheel assembly of this invention is shown, with reference to the appendix. Figures 1 to 8 The flywheel assembly shown differs from the one in that, in the attached Figure 11 In this specific example of the flywheel assembly of the present invention shown, the coil unit 51 can be fixedly mounted on the mounting shaft 30, thereby configuring the coil unit 51 to remain stationary relative to the mounting shaft 30.

[0086] Appendix Figures 12 to 15 The flywheel assembly according to a second preferred embodiment of the present invention is shown, along with an attached... Figures 1 to 8 The flywheel assembly shown in the first preferred embodiment of the present invention differs from that in that, in the attached... Figures 12 to 15In this specific example of the flywheel assembly shown, the inner magnetron 20 has at least one pair of convection perforations 203 extending through opposite sides of the inner magnetron 20 in its thickness direction. From a top view, the convection perforations 203 are located between the central perforation 201 and the edge of the inner magnetron 20. By providing the convection perforations 203 in the inner magnetron 20, when the flywheel 10 is driven to generate heat relative to the inner magnetron 20, on the one hand, the heat generated by the conductor 12 can be radiated to the external environment through the convection perforations 203 of the inner magnetron 20, thereby increasing the heat dissipation rate of the flywheel assembly. On the other hand, the convection perforations 203 of the inner magnetron 20 prevent the heat generated by the conductor 12 from radiating towards the power generation device 50, thus preventing the temperature of the operating environment of the power generation device 50 from rising due to the heat generated by the conductor 12, thereby improving the reliability of the power generation device 50.

[0087] Specifically, the bottom shell 211 has a bottom shell convection hole 2117, which connects the shell space 213 of the outer shell 21 to the external environment. The top cover 212 has a top cover convection hole 2124, which connects the shell space 213 of the outer shell 21 to the external environment. The positions of the bottom shell convection hole 2117 of the bottom shell 211 and the top cover convection hole 2124 of the top cover 212 correspond to each other to form convection through holes 203 that penetrate the opposite sides of the inner magnetic control device 20.

[0088] Preferably, the position of the convection perforation 203 of the internal magnetic control device 20 corresponds to the rotation path of the flywheel heat dissipation hole 1131 of the disc 113 of the flywheel body 11. In this way, when the flywheel 10 is driven to rotate relative to the internal magnetic control device 20, the spaces on opposite sides of the flywheel assembly can achieve convection through the flywheel heat dissipation hole 1131 of the disc 113 of the flywheel body 11 and the convection perforation 203 of the internal magnetic control device 20, so as to achieve rapid heat dissipation of the flywheel assembly.

[0089] Reference Appendix Figure 12 , Figure 14 and Figure 15The internal magnetoresistive device 20 further has a heat dissipation groove 204, which is formed by thinning a portion of the edge of the internal magnetoresistive device 20. In the circumferential direction, a portion of the conductor 12 is exposed to the heat dissipation groove 204 of the internal magnetoresistive device 20. Thus, when the flywheel 10 is driven to rotate relative to the internal magnetoresistive device 20, causing the conductor 12 to cut the magnetic field lines of the internal magnetoresistive device 20 and generate eddy currents, the heat generated by the conductor 12 can be quickly radiated to the external environment to achieve rapid heat dissipation of the flywheel assembly.

[0090] Appendix Figures 16 to 25 The flywheel assembly according to a third preferred embodiment of the present invention is shown. The flywheel assembly includes a flywheel 10A, an internal magnetic control device 20A, an assembly shaft 30A, and a power generation device 50A.

[0091] The flywheel 10A includes a flywheel body 11A and a conductor 12A. The flywheel body 11A has a flywheel cavity 111A and a flywheel center through hole 112A communicating with the flywheel cavity 111A. The conductor 12A is fixedly disposed on the flywheel body 11A and the conductor 12A is located in the flywheel cavity 111A of the flywheel body 11A.

[0092] Specifically, in this particular example of the flywheel assembly of this utility model, the flywheel body 11A includes a disc 113A and a ring 114A integrally extending from the edge of the disc 113A. The flywheel cavity 111A of the flywheel body 11A is formed between the disc 113A and the ring 114A, and the flywheel center through hole 112A of the flywheel body 11A is formed in the disc 113A. The conductor 12A is fixedly disposed on the inner wall of the ring 114A, so that the conductor 12A is fixedly disposed on the flywheel body 11A and the conductor 12A is located in the flywheel cavity 111A of the flywheel body 11A.

[0093] It is worth mentioning that the specific manner in which the conductor 12A is fixedly disposed on the inner wall of the ring 114A is not limited in the flywheel assembly of this utility model. For example, in the appendix Figures 16 to 25 In this specific example of the flywheel assembly shown, the conductor 12A is annular, and the outer diameter of the conductor 12A is the same as the inner diameter of the rim 114A. Based on the friction between the outer wall of the conductor 12A and the inner wall of the rim 114A, the conductor 12A can be fixedly disposed on the rim 114A. Preferably, in some embodiments of the flywheel assembly of this invention, the conductor 12A may be an aluminum ring.

[0094] The flywheel 10A is rotatably mounted on one end of the assembly shaft 30A, and the internal magnetoresistive device 20A is fixedly mounted on the other end of the assembly shaft 30A, with the internal magnetoresistive device 20A suspended in the flywheel cavity 111A of the flywheel 10A. When the flywheel 10A is driven to rotate relative to the internal magnetoresistive device 20A, the conductor 12A cuts the magnetic field lines of the internal magnetoresistive device 20A to generate eddy currents, thereby providing magnetic resistance to the flywheel assembly. That is, the internal magnetoresistive device 20A has a magnetic field, and at least a portion of the conductor 12A is located within the magnetic field range of the internal magnetoresistive device 20A, so that when the flywheel 10A is driven to rotate relative to the internal magnetoresistive device 20A, the conductor 12A can cut the magnetic field lines of the internal magnetoresistive device 20A to generate eddy currents, thereby providing magnetic resistance to the flywheel assembly.

[0095] Specifically, the internal magnetic control device 20A has a central through hole 201A and a threaded hole 206A communicating with the central through hole 201A. After one end of the assembly shaft 30A passes through the central through hole 201A of the internal magnetic control device 20A, the assembly shaft 30A closes the inner opening of the threaded hole 206A of the internal magnetic control device 20A. The flywheel assembly includes a threaded pin 80A, which is screwed into the threaded hole 206A of the internal magnetic control device 20A, and the inner end of the threaded pin 80A abuts against the assembly shaft 30A, so that the internal magnetic control device 20A is fixedly fitted onto the assembly shaft 30A. Preferably, the central through hole 201A of the inner magnetic control device 20A is a non-circular through hole, and the portion of the assembly shaft 30A held in the central through hole 201A of the inner magnetic control device 20A is also non-circular. Furthermore, the shape and size of the portion of the assembly shaft 30A held in the central through hole 201A of the inner magnetic control device 20A are consistent with the shape and size of the central through hole 201A of the inner magnetic control device 20A. In this way, after this portion of the assembly shaft 30A is located in the central through hole 201A of the inner magnetic control device 20A, the flywheel assembly can prevent the assembly shaft 30A from rotating relative to the inner magnetic control device 20A.

[0096] In other words, in the appendix Figures 16 to 25 In this specific example of the flywheel assembly of the present invention, the flywheel assembly does not require the use of a flange to fix the inner magnetic control device 20A and the assembly shaft 30A. Instead, one end of the assembly shaft 30A is directly fixed to the inner magnetic control device 20A. In this way, not only can the cost of the flywheel assembly be reduced, but the assembly efficiency of the flywheel assembly can also be improved.

[0097] In the appendix Figures 16 to 25 In this specific example of the flywheel assembly of the present invention, the flywheel assembly includes a plurality of bearings 60A. The inner sides 61A of these bearings 60A are fixedly fitted onto the assembly shaft 30A at different positions, and the outer sides 62A of these bearings 60A are fixedly disposed onto the flywheel body 11A at different positions, so that these bearings 60A rotatably fit the flywheel 10A onto the assembly shaft 30A, allowing the flywheel 10A to rotate relative to the assembly shaft 30A.

[0098] Furthermore, the flywheel assembly includes a retaining ring 70A, which is snapped onto the assembly shaft 30A. From a top view, the retaining ring 70A and the inner bearing side 61A of the bearing 60A overlap, thereby preventing the bearing 60A from moving along the extending direction of the assembly shaft 30A. Specifically, the inner side of the retaining ring 70A is engaged in a groove in the assembly shaft 30A, and the outer side abuts against the inner bearing side 61A of the bearing 60A, thus preventing the bearing 60A from moving along the extending direction of the assembly shaft 30A.

[0099] Specifically, the internal magnetic control device 20A includes a housing 21A, a drive motor 22A, a swing arm 23A, a set of control magnets 24A, and a transmission unit 25A. The drive motor 22A is disposed within the housing 21A. The swing arm 23A has a pivoting end 231A and a driven end 232A facing each other. The pivoting end 231A of the swing arm 23A is rotatably mounted to the edge of the housing 21A. The control magnets 24A are disposed on the outer side of the swing arm 23A and are used to provide a magnetic field. The transmission unit 25A connects the worm gear 221A of the drive motor 22A and the driven end 232A of the swing arm 23A. The internal magnetic control device 20A is suspended in the flywheel cavity 111A of the flywheel body 11A with the control magnets 24A and the conductor 12A facing each other.

[0100] When the worm gear 221A of the drive motor 22A rotates in one direction, the transmission unit 25A transmits power to the swing arm 23A, causing the swing arm 23A to drive the control magnet 24A to swing towards the conductor 12A. At this time, when the flywheel 10A is driven to rotate relative to the internal magnetic control device 20A, the magnetic resistance provided by the flywheel assembly is increased. Correspondingly, when the worm gear 221A of the drive motor 22A rotates in another direction, the transmission unit 25A transmits power to the swing arm 23A, causing the swing arm 23A to drive the control magnet 24A to swing away from the conductor 12A. At this time, when the flywheel 10A is driven to rotate relative to the internal magnetic control device 20A, the magnetic resistance provided by the flywheel assembly is decreased.

[0101] In other words, by controlling the rotation direction of the worm gear 221A of the drive motor 22A, the flywheel assembly can control the swing arm 23A and the control magnet 24A to swing toward or away from the conductor 12A, thereby adjusting the magnetic resistance provided by the flywheel assembly.

[0102] Further, the transmission unit 25A includes a first gear 251A, a second gear 252A, a third gear 253A, a sector gear 254A, and a connecting rod 255A. The first gear 251A, the second gear 252A, the third gear 253A, and the sector gear 254A are all rotatably mounted on the housing 21A. The first gear 251A meshes with the worm gear 221A of the drive motor 22A, the second gear 252A meshes with the first gear 251A, the third gear 253A meshes with the second gear 252A, and the sector gear 254A meshes with the third gear 251A. 53A, the two opposite ends of the connecting rod 255A are rotatably mounted to the sector gear 254A and the driven end 232A of the swing arm 23A, respectively. Thus, when the worm 221A of the drive motor 22A rotates, the worm 221A of the drive motor 22A drives the first gear 251A, the second gear 252A, the third gear 253A and the sector gear 254A to rotate in sequence. The sector gear 254A drives the driven end 232A of the swing arm 23A through the connecting rod 255A, so that the swing arm 23A drives the control magnet 24A to swing toward or away from the conductor 12A.

[0103] Preferably, refer to the appendix Figure 4 , Figure 6 and Figure 7The internal magnetic control device 20A further includes a potentiometer 26A. The fixed portion of the potentiometer 26A is mounted on the housing 21A, and the movable portion of the potentiometer 26A is mounted on the sector gear 254A. When the worm gear 221A of the drive motor 22A drives the first gear 251A, the second gear 252A, the third gear 253A, and the sector gear 254A to rotate sequentially, the sector gear 254A drives the movable portion of the potentiometer 26A to rotate, thereby changing the resistance value of the potentiometer 26A. It is understood that the resistance value of the potentiometer 26A is related to the swing position of the swing arm 23A. Therefore, the flywheel assembly can determine the position of the swing arm 23A and the control magnet 24A by detecting the resistance value of the potentiometer 26A. In this way, the magnetic resistance provided by the flywheel assembly can be effectively controlled.

[0104] The housing 21A includes a bottom shell 211A and a top cover 212A, and the housing 21A has a housing space 213A and a side opening 214A. The top cover 212A is mounted on the bottom shell 211A to form the housing space 213A and the side opening 214A of the housing between the bottom shell 211A and the top cover 212A. The drive motor 22A, the swing arm 23A and the transmission unit 25A are respectively disposed in the housing space 213A of the housing 21A, and the swing arm 23A is adjacent to the side opening 214A of the housing 21A, wherein the side opening 214A of the housing 21A faces the conductor 12A.

[0105] Specifically, the drive motor 22A is clamped by the bottom shell 211A and the top cover 212A, so that the drive motor 22A is reliably disposed in the housing space 213A of the outer shell 21A. The opposite sides of the pivot end 231A of the swing arm 23A are rotatably mounted on the bottom shell 211A and the top cover 212A, so that the swing arm 23A is swingably disposed on the edge of the outer shell 21A adjacent to the side opening 214A. The opposite sides of the first gear 251A, the second gear 252A, the third gear 253A and the sector gear 254A of the transmission unit 25A are rotatably mounted on the bottom shell 211A and the top cover 212A, so that the first gear 251A, the second gear 252A, the third gear 253A and the sector gear 254A are reliably disposed in the housing space 213A of the outer shell 21A.

[0106] The bottom shell 211A has a bottom shell center hole 2110A, and the top cover 212A has a top cover center hole 2120A. The positions of the bottom shell center hole 2110A of the bottom shell 211A and the top cover center hole 2120A of the top cover 212A are opposite to each other, so that the bottom shell center hole 2110A of the bottom shell 211A and the top cover center hole 2120A of the top cover 212A form the device center through hole 201A of the inner magnetic control device 20A.

[0107] The internal magnetic control device 20A includes a circuit board 27A, which is disposed on the housing 21A and located in the housing space 213A of the housing 21A, making the circuit board 27A visually invisible. The drive motor 22A and the potentiometer 26A are respectively connected to the circuit board 27A. The circuit board 27A can control the operating state of the drive motor 22A according to the resistance signal fed back by the potentiometer 26A. That is, the circuit board 27A integrates control functions; for example, the circuit board 27A may be fitted with logic chips or have logic circuits, so that the circuit board 27A can control the operating state of the drive motor 22A according to the resistance signal fed back by the potentiometer 26A. Preferably, the circuit board 27A is screwed onto the bottom shell 211A to ensure that the circuit board 27A is reliably disposed in the housing space 213A of the housing 21A.

[0108] Furthermore, the top cover 212A includes a plate cover 2125A and a flange cover 2126A. The plate cover 2125A and the flange cover 2126A are respectively independently installed on the bottom shell 211A. The outer shell 21A forms a part of the shell space 213A between the plate cover 2125A and the bottom shell 211A, and another part of the shell space 213A between the flange cover 2126A and the bottom shell 211A. The side opening 214A is formed between the flange cover 2126A and the bottom shell 211A. In the flywheel assembly of this utility model, the plate cover 2125A can be installed on the bottom shell 211A by at least one screw, and the flange cover 2126A can be installed on the bottom shell 211A by at least one screw. Furthermore, the plate cover 2125A and the flange cover 2126A are independent of each other, that is, the installation and removal of the plate cover 2125A do not affect the installation relationship between the flange cover 2126A and the bottom shell 211A.

[0109] The pivot end 231A of the swing arm 23A is rotatably mounted on the bottom shell 211A and the flange cover 2126A on opposite sides, so that the swing arm 23A is swingably disposed on the edge of the outer shell 21A and adjacent to the side opening 214A of the outer shell 21A. The first gear 251A, the second gear 252A, the third gear 253A and the sector gear 254A of the transmission unit 25A are rotatably mounted on the bottom shell 211A and the flange cover 2126A on opposite sides, so that the first gear 251A, the second gear 252A, the third gear 253A and the sector gear 254A are reliably disposed in the housing space 213A of the outer shell 21A. The circuit board 27A is located below the plate cover 2125A. After the plate cover 2125A is removed from the bottom shell 211A, the circuit board 27A is exposed to facilitate maintenance. Even after removing the plate cover 2125A, the flange cover 2126A remains installed on the bottom shell 211A, thus the installation relationship of the outer shell 21A, the drive motor 22A, the swing arm 23A, the control magnet 24A, and the transmission unit 25A is unaffected. The plate cover 2125A has at least one terminal through hole 21251A. The position of the wiring terminal 271A of the circuit board 27A corresponds to the position of the terminal through hole 21251A of the plate cover 2125A, so that the plug end of the external device's connection cable can be inserted into the wiring terminal 271A of the circuit board 27A through the terminal through hole 21251A of the plate cover 2125A.

[0110] The central through hole 201A and the screw hole 206A of the top cover of the internal magnetic control device 20A are both formed in the flange cover 2126A. The threaded pin 80A is used to install the flange cover 2126A and the assembly shaft 30A. Therefore, when the flywheel 10A is driven to rotate relative to the internal magnetic control device 20A, the flange cover 2126A is the directly stressed part of the internal magnetic control device 20A, and the stress is applied at a single point. To improve the deformation resistance of the bottom shell 211A and the flange cover 2126A, additional... Figures 16 to 25In this specific example of the flywheel assembly of the present invention shown, on the one hand, the base shell 211A and the flange cover 2126A are made of PA66 composite material reinforced with 30% glass fiber; on the other hand, the flange cover 2126A has a plurality of radial reinforcing ribs 21261A and a plurality of circumferential reinforcing ribs 21262A. The radial reinforcing ribs 21261A extend from the inner edge to the outer edge of the flange cover 2126A, and the circumferential reinforcing ribs 21262A intersect with the radial reinforcing ribs 21261A. In this way, when the flywheel 10A is driven to generate relative to… When the internal magnetic control device 20A rotates, the tension applied by the pivot end 231A of the swing arm 23A to the edge of the bottom shell 211A and the edge of the flange cover 2126A will not cause the bottom shell 211A and the flange cover 2126A to undergo large-scale deformation. For example, when the tension applied by the pivot end 231A of the swing arm 23A to the edge of the bottom shell 211A and the edge of the flange cover 2126A is 100N, the deformation of the bottom shell 211A and the flange cover 2126A is controlled within 0.5mm. This can avoid the flywheel assembly from shaking and having uneven resistance.

[0111] Further, the bottom shell 211A has an outer receiving groove 2111A, a pivot hole 2112A, and a wire hole 2113A. The pivot hole 2112A and the wire hole 2113A of the bottom shell 211A are respectively connected to the outer receiving groove 2111A and the housing space 213A of the outer shell 21A. The fixed part of the potentiometer 26A is received in the outer receiving groove 2111A of the bottom shell 211A. The movable part is mounted on the sector gear 254A after passing through the pivot hole 2112A of the bottom shell 211A. The internal magnetic control device 20A includes a wire 28A, one end of which is connected to the fixed part of the potentiometer 26A, and the other end extends through the wire hole 2113A of the bottom shell 211A to the housing space 213A of the outer shell 21A. The wire 28A is also connected to the circuit board 27A. It is understood that the drive motor 22A is connected to the circuit board 27A via another wire 28A, so that the circuit board 27A can control the operating state of the drive motor 22A according to the resistance signal fed back by the potentiometer 26A.

[0112] Preferably, the bottom shell 211A has an outer limiting protrusion 2114A and an inner limiting protrusion 2115A, which protrude towards the housing space 213A of the outer shell 21A. The top cover 212A has an outer limiting protrusion 2121A and an inner limiting protrusion 2122A, which are formed on the flange cover 2126A and protrude towards the housing space 213A of the outer shell 21A. The position of the outer limiting protrusion 2114A of the bottom shell corresponds to the position of the outer limiting protrusion 2121A of the top cover 212A and is located outside the swing arm 23A. It is used to limit the maximum distance of the swing arm 23A to swing outward and prevent the control magnet 24A from colliding with the conductor 12A. The position of the inner limiting protrusion 2115A of the bottom shell 211A corresponds to the position of the inner limiting protrusion 2122A of the top cover 212A and is located inside the swing arm 23A. It is used to limit the maximum distance of the swing arm 23A to swing inward and prevent the swing arm 23A from colliding with the circuit board 27A.

[0113] The power generation device 50A includes a coil unit 51A and at least one power generation magnet 52A. The coil unit 51A is configured to remain stationary relative to the assembly shaft 30A. The power generation magnet 52A is disposed on the flywheel body 11A, allowing it to rotate with the flywheel 10A. In the circumferential direction, the positions of the coil unit 51A and the power generation magnet 52A are opposite each other, and both are located in the central through-hole 201A of the inner magnetic control device 20A. When the flywheel 10A is driven to rotate relative to the inner magnetic control device 20A, the power generation magnet 52A rotates around the coil unit 51A, at which time the coil unit 51A generates current, enabling the flywheel assembly to generate electricity. It is understood that the circumferential direction is the direction of rotation of the flywheel 10A.

[0114] In the flywheel assembly of this utility model, the coil unit 51A and the magnet 52A for power generation of the power generation device 50A are both located in the central through hole 201A of the inner magnetic control device 20A. This means that the power generation device 50A does not need to occupy additional space, which helps to reduce the volume of the flywheel assembly and makes the appearance of the flywheel assembly neat, so that the flywheel assembly can be matched with different types of fitness equipment.

[0115] The coil unit 51A includes a coil support 511A and a plurality of coils 512A. The coil support 511A has an even number of winding teeth 5111A, and each winding tooth 5111A is wound with one coil 512A. The coil support 511A is fixedly mounted on the flange cover 2126A, and the flange cover 2126A7 enables the coil unit 51A to remain stationary relative to the mounting shaft 30A. Specifically, the flange cover 2126A has a protrusion 21263A that protrudes toward the center hole 2110A of the bottom shell 211A. The coil support 511A is fixedly fitted onto the protrusion 21263A of the flange cover 2126A, thus the coil support 511A is fixedly mounted on the flange cover 2126A.

[0116] The flywheel body 11A further includes an assembly ring 115A, which extends from the wheel 113A to the bottom shell center hole 2110A of the bottom shell 211A, and surrounds the assembly shaft 30A. The power generation magnet 52A is disposed in the assembly ring 115A of the flywheel body 11A. Thus, the assembly ring 115A of the flywheel body 11A is used to place the power generation magnet 52A in the device center through hole 201A of the inner magnetic control device 20A, and the position of the power generation magnet 52A corresponds to the position of the coil unit 51A in the circumferential direction. In this way, when the flywheel 10A is driven to rotate relative to the inner magnetic control device 20A, the power generation magnet 52A rotates around the coil unit 51A, thereby causing the power generation device 50A to generate electricity. Preferably, the assembly ring 115A has an annular groove 1151A, and the power generation magnet 52A is located in the annular groove 1151A of the assembly ring 115A.

[0117] Preferably, in this specific example of the flywheel assembly of the present invention, there are multiple power-generating magnets 52A, which are arranged in a ring on the assembly ring 115A of the flywheel body 11A.

[0118] Preferably, the coil 512A is connected to the circuit board 27A, so that the electrical energy generated by the power generation device 50A can be used to drive the drive motor 22A. It is understood that since the coil bracket 511A of the coil unit 51A is fixedly fitted onto the protrusion 21263A of the flange cover 2126A, the relative position of the coil unit 51A and the circuit board 27A remains unchanged, which facilitates the connection between the coil 512A and the circuit board 27A. Specifically, the flange cover 2126A has a cover body through hole 21264A, and the plate cover 2125A has a cover body notch 21252A. The position of the cover body notch 21252A of the plate cover 2125A corresponds to the position of the cover body through hole 21264A of the flange cover 2126A. The connecting wire of the coil 512A extends through the cover body through hole 21264A of the flange cover 2126A and the cover body notch 21252A of the plate cover 2125A to the housing space 213A of the outer casing 21A, so that the coil 512A is connected to the circuit board 27A.

[0119] It is understandable that when the flywheel 10A is driven to rotate relative to the inner magnetocontrol device 20A, causing the conductor 12A to cut the magnetic field lines of the inner magnetocontrol device 20A and generate eddy currents, the conductor 12A will generate a large amount of heat. In the flywheel assembly of this invention, in order to achieve rapid heat dissipation of the flywheel assembly, the inner magnetocontrol device 20A is provided with at least one heat dissipation space 202A at its edge. In the thickness direction of the inner magnetocontrol device 20A, the heat dissipation space 202A extends through the opposite sides of the inner magnetocontrol device 20A. A portion of the conductor 12A is exposed in the heat dissipation space 202A of the inner magnetocontrol device 20A, so that the heat generated by the conductor 12A when cutting the magnetic field lines of the inner magnetocontrol device 20A can be rapidly radiated to the external environment through the heat dissipation space 202A of the inner magnetocontrol device 20A, thereby achieving rapid heat dissipation of the flywheel assembly.

[0120] In this specific example of the flywheel assembly of this utility model, the inner magnetoresistive device 20A is recessed from its edge toward the central through-hole 201A to form the heat dissipation space 202A. Thus, a portion of the conductor 12A is exposed within the heat dissipation space 202A of the inner magnetoresistive device 20A. Consequently, the heat generated by the conductor 12A when cutting the magnetic field lines of the inner magnetoresistive device 20A can be rapidly radiated to the external environment through the heat dissipation space 202A of the inner magnetoresistive device 20A, achieving rapid heat dissipation of the flywheel assembly. Preferably, the heat dissipation space 202A of the inner magnetoresistive device 20A is fan-shaped.

[0121] The bottom shell 211A further has at least one bottom shell convection hole 2117A, which connects the housing space 213A of the outer shell 21A to the external environment. The top cover 212A has a top cover convection hole 2124A formed in the flange cover 2126A, which connects the housing space 213A of the outer shell 21A to the external environment. When the flywheel 10A is driven to rotate relative to the internal magnetic control device 20A, the bottom shell convection hole 2117A of the bottom shell 211A and the top cover convection hole 2124A of the top cover 212A can significantly improve the heat dissipation speed of the flywheel assembly.

[0122] The internal magnetoresistive device 20A further has a heat dissipation groove 204A, which is formed by thinning a portion of the edge of the plate cover 2125A. In the circumferential direction, a portion of the conductor 12A is exposed to the heat dissipation groove 204A of the internal magnetoresistive device 20A. Thus, when the flywheel 10A is driven to rotate relative to the internal magnetoresistive device 20A, causing the conductor 12A to cut the magnetic field lines of the internal magnetoresistive device 20A and generate eddy currents, the heat generated by the conductor 12A can be quickly radiated to the external environment to achieve rapid heat dissipation of the flywheel assembly.

[0123] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. A flywheel assembly with power generation function, characterized in that, include: Assemble the shaft; An internal magnetron control device, wherein the internal magnetron control device is fixedly mounted on one end of the assembly shaft; A flywheel, wherein the flywheel includes a flywheel body and a conductor, the flywheel body having a flywheel cavity and a central through-hole communicating with the flywheel cavity, the conductor being fixedly disposed on the flywheel body and located in the flywheel cavity, the other end of a mounting shaft passing through the central through-hole of the flywheel body, and the flywheel being rotatable relative to the mounting shaft, wherein an internal magnetron is suspended in the flywheel cavity of the flywheel body; and A power generation device, wherein the power generation device includes a coil unit and a power generation magnet, the coil unit being configured to remain stationary relative to the mounting shaft, and the power generation magnet being disposed on the flywheel body, wherein the positions of the coil unit and the power generation magnet are opposite each other in the circumferential direction.

2. The flywheel assembly according to claim 1, wherein the internal magnetoresistive device has a central through-hole, one end of the mounting shaft passes through the central through-hole of the internal magnetoresistive device, and the coil unit and the power-generating magnet are both located in the central through-hole of the internal magnetoresistive device.

3. The flywheel assembly according to claim 2, wherein the flywheel assembly includes a flange, the flange being fixedly fitted onto one end of the mounting shaft and fixedly mounted onto the inner magnetoresistive device, the flange and the mounting shaft cooperating to suspend the inner magnetoresistive device within the flywheel cavity of the flywheel body.

4. The flywheel assembly of claim 2, wherein the internal magnetron is locked to one end of the assembly shaft.

5. The flywheel assembly according to any one of claims 1 to 4, wherein the inner magnetron has a heat dissipation space, and the heat dissipation space extends through opposite sides of the inner magnetron in the thickness direction of the inner magnetron.

6. The flywheel assembly of claim 5, wherein the heat dissipation space of the internal magnetron is located at the edge of the internal magnetron.

7. The flywheel assembly according to claim 5, wherein the flywheel body has a flywheel heat dissipation hole, the flywheel heat dissipation hole communicates with the flywheel cavity and the external environment, wherein the position of the heat dissipation space of the internal magnetic control device corresponds to the rotation path of the flywheel heat dissipation hole of the flywheel body.

8. The flywheel assembly according to any one of claims 1 to 4, wherein the inner magnetron has convection perforations that extend through opposite sides of the inner magnetron in the thickness direction of the inner magnetron and, from a top view, are located between the central perforation of the device and the edge of the inner magnetron.

9. The flywheel assembly according to any one of claims 1 to 4, wherein the internal magnetron has a heat dissipation groove formed by thinning a portion of the edge of the internal magnetron, and in the circumferential direction, a portion of the conductor is exposed to the heat dissipation groove of the internal magnetron.

10. The flywheel assembly of claim 3, wherein the flange includes a flange body, a transverse extension arm integrally extending from the flange body, and a longitudinal extension arm integrally extending from the flange body, the flange body being fixedly fitted onto the mounting shaft, the transverse extension arm being fixedly fitted onto the inner magnetizer, the longitudinal extension arm extending to the device center through-hole of the inner magnetizer, the coil unit being fixedly fitted onto the longitudinal extension arm such that the flange configures the coil unit to remain stationary relative to the mounting shaft, wherein the flywheel body has a mounting ring surrounding the mounting shaft and extending to the device center through-hole of the inner magnetizer, and the power-generating magnet is disposed on the mounting ring of the flywheel body.

11. The flywheel assembly of claim 3, wherein the flange includes a flange body and a lateral extension arm integrally extending from the flange body, the flange body being fixedly fitted onto the mounting shaft, the lateral extension arm being fixedly mounted onto the internal magnetizer, the coil unit being fixedly disposed on the internal magnetizer such that the coil unit is configured by the internal magnetizer to remain stationary relative to the mounting shaft, wherein the flywheel body has a mounting ring surrounding the mounting shaft and extending to the central perforation of the device of the internal magnetizer, and the power-generating magnet is disposed on the mounting ring of the flywheel body.

12. The flywheel assembly of claim 4, wherein the internal magnetic control device comprises a housing, a drive motor, a swing arm, a control magnet, a transmission unit, and a circuit board; the housing comprises a bottom shell and a top cover, and a housing space and a side opening communicating with the housing space; the top cover comprises a plate cover and a flange cover; the plate cover is mounted on the bottom shell to form a portion of the housing space between the plate cover and the bottom cover; the flange cover is mounted on the bottom shell to form another portion of the housing space and the side opening between the plate cover and the bottom shell; and the drive motor is clamped. Between the bottom shell and the flange cover, the opposite sides of the pivot end of the swing arm are rotatably mounted to the edge of the bottom shell and the edge of the flange cover, respectively, so that the swing arm is rotatably held at the side opening of the housing. The control magnet is disposed on the swing arm. The transmission unit is disposed in the housing space of the housing and the transmission unit connects the worm gear of the drive motor and the driven end of the swing arm. The circuit board is disposed in the housing space of the housing and located below the plate cover. The drive motor and the coil unit are respectively connected to the circuit board.

13. The flywheel assembly of claim 12, wherein the flange cover has a plurality of radial reinforcing ribs and a plurality of circumferential reinforcing ribs, the radial reinforcing ribs extending from the inner edge to the outer edge of the flange cover, and the circumferential reinforcing ribs intersecting the radial reinforcing ribs.

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