Flywheel assembly having power generation function

Abstract

Disclosed in the present invention is a flywheel assembly having a power generation function, comprising an inner magnetic control device, a flywheel, an assembly shaft, a flange, and a power generation device. The flywheel comprises a flywheel body and a conductor, the flywheel body being provided with a flywheel cavity and a flywheel center through hole in communication with the flywheel cavity, and the conductor being fixedly arranged on the flywheel body and located in the flywheel cavity; the assembly shaft passes through a device center through hole of the inner magnetic control device and the flywheel center through hole, and the flywheel is rotatable relative to the assembly shaft; the flange is fixedly sleeved on one end portion of the assembly shaft and is fixedly assembled on the inner magnetic control device; the inner magnetic control device is suspended in the flywheel cavity of the flywheel body; and the power generation device comprises a coil unit and a power generation magnet, the position of the coil unit relative to the assembly shaft remaining unchanged, the power generation magnet being arranged on the flywheel body, and the coil unit and the power generation magnet being both located in the device center through hole.

Description

Flywheel assembly with power generation function TECHNICAL FIELD

[0001] The present application relates to the field of fitness equipment, in particular to a flywheel assembly with power generation function. BACKGROUND

[0002] In the Chinese patent application with publication number CN110624207A, a transmission resistance control device is disclosed, which includes a frame, a control mechanism, a transmission mechanism and an adjusting mechanism are arranged on the frame, the control mechanism includes a first controller and a second controller which are electrically connected to each other, the first controller is configured to accept 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 through the belt, the adjusting mechanism is arranged on the flywheel assembly, and the adjusting mechanism is electrically connected to the second controller, the adjusting mechanism is configured to adjust the resistance of the flywheel assembly according to the instructions issued by the second controller. Specifically, the adjusting mechanism further includes a power coil assembly and a magnet, the power coil assembly is installed on the fixed seat of the flywheel assembly through two fixing bolts and two fixing pins and is electrically connected to the control mechanism, the power coil assembly is magnetically attracted to the magnet, when riding freely, the user controls the keys on the first controller to adjust the current change of the power coil assembly through the first controller to control the second controller, so as to adjust the magnetic attraction force between the power coil assembly and the magnet, so as to adjust the resistance of the flywheel body, and the transmission resistance of the flywheel body is transmitted to the pulley through the belt by the transmission effect of the belt, so as to affect the movement intensity of the user when pedaling the pedal. The power coil assembly and the flywheel body of the existing transmission resistance control device need to be installed on the fixed seat, and the power coil assembly is located on one side of the flywheel body, that is, these accessories are not integrated, resulting in problems such as large volume, high failure rate and the like of the assembled transmission resistance control device. SUMMARY

[0003] One object of the present application is to provide a flywheel assembly with power generation function, wherein the power generation device, the flywheel and the inner magnetic control device of the flywheel assembly are integrated, so that the flywheel assembly has compact structure, small volume and high stability.

[0004] One object of the present application is to provide a flywheel assembly with power generation function, wherein the power generation device, the flywheel and the inner magnetic control device of the flywheel assembly are integrated, so that the flywheel assembly has compact structure, small volume and high stability.

[0005] An object of the present application is to provide a flywheel assembly with power generation function, wherein the edge of the inner 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 inner magnetic control device, so as to avoid the flywheel assembly working in a high temperature environment, thereby improving the reliability and stability of the flywheel assembly.

[0006] An object of the present application is to provide a flywheel assembly with power generation function, wherein the middle part of the inner magnetic control device forms the heat dissipation space, and when the flywheel assembly provides magnetic resistance, the heat generated by the power generation device due to power generation can be quickly radiated to the outside through the heat dissipation space of the inner magnetic control device, so as to avoid the flywheel assembly working in a high temperature environment, thereby improving the reliability and stability of the flywheel assembly.

[0007] An object of the present application is to provide a flywheel assembly with power generation function, wherein the inner magnetic control device has a convection hole, which not only can improve the heat dissipation capacity of the flywheel assembly, but also can prevent the heat generated by the conductor from radiating to the power generation device, so as to improve the reliability and stability of the flywheel assembly.

[0008] An object of the present application is to provide a flywheel assembly with power generation function, wherein the edge of the inner magnetic control device has a heat dissipation groove for exposing the conductor, so that 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 inner magnetic control device, so as to avoid the flywheel assembly working in a high temperature environment, thereby improving the reliability and stability of the flywheel assembly.

[0009] According to an aspect of the present application, a flywheel assembly with power generation function is provided, which comprises:

[0010] an assembly shaft;

[0011] an inner magnetic control device, wherein the inner magnetic control device is fixedly sleeved on one end of the assembly shaft;

[0012] a flywheel, wherein the flywheel comprises a flywheel body and a conductor, the flywheel body has a flywheel cavity and a flywheel center hole communicating with the flywheel cavity, the conductor is fixedly arranged on the flywheel body and located in the flywheel cavity, the other end of the assembly shaft passes through the flywheel center hole of the flywheel body, and the flywheel is rotatable relative to the assembly shaft, wherein the inner magnetic control device 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 configured to remain stationary with respect to a position of the assembly shaft, and a power generation magnet provided to the flywheel body, and a position of the coil unit and a position of the power generation magnet are opposite in a circumferential direction.

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

[0015] According to an embodiment of the present invention, the flywheel assembly includes a flange fixedly sleeved to one end of the assembly shaft and fixedly assembled to the inner magnetic control device, and the flange and the assembly shaft cooperate to suspend the inner magnetic control device in the flywheel cavity of the flywheel body.

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

[0017] According to an embodiment of the present invention, the inner magnetic control device has a heat dissipation space penetrating through opposite sides of the inner magnetic control device in a thickness direction of the inner magnetic control device.

[0018] According to an embodiment of the present invention, the heat dissipation space of the inner magnetic control device is located at an edge of the inner magnetic control device.

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

[0020] According to an embodiment of the present invention, the inner magnetic control device has a convection hole penetrating through opposite sides of the inner magnetic control device in a thickness direction of the inner magnetic control device, and the convection hole is located between the device center hole and an edge of the inner magnetic control device in a top-down view.

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

[0022] According to one embodiment of the present application, the flange includes a flange body, a lateral extension arm integrally extended from the flange body, and a longitudinal extension arm integrally extended from the flange body, the flange body is fixedly sleeved on the assembly shaft, the lateral extension arm is fixedly assembled on the inner magnetic control device, the longitudinal extension arm extends to the device center hole of the inner magnetic control device, the coil unit is fixedly sleeved on the longitudinal extension arm, so that the coil unit is configured to be kept in position relative to the assembly shaft by the flange, wherein the flywheel body has an assembly ring, the assembly ring surrounds the assembly shaft and extends to the device center hole of the inner magnetic control device, and the power generation magnet is arranged on the assembly ring of the flywheel body.

[0023] According to one embodiment of the present application, the flange includes a flange body and a lateral extension arm integrally extended from the flange body, the flange body is fixedly sleeved on the assembly shaft, the lateral extension arm is fixedly assembled on the inner magnetic control device, and the coil unit is fixedly arranged on the inner magnetic control device, so that the coil unit is configured to be kept in position relative to the assembly shaft by the inner magnetic control device, wherein the flywheel body has an assembly ring, the assembly ring surrounds the assembly shaft and extends to the device center hole of the inner magnetic control device, and the power generation magnet is arranged on the assembly ring of the flywheel body.

[0024] According to one embodiment of the present application, the inner magnetic control device includes a housing, a driving 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 has a housing space and a side opening communicated with the housing space, the top cover includes a plate cover and a flange cover, the plate cover is mounted on the bottom shell to form a part of the housing space between the plate cover and the bottom cover, the flange cover is mounted on the bottom shell to form another part of the housing space and the side opening between the plate cover and the bottom shell, the driving motor is clamped between the bottom shell and the flange cover, opposite sides of a pivot end of the swing arm are rotatably mounted on edges of the bottom shell and the flange cover respectively, so that the swing arm is rotatably held at the side opening of the housing, the control magnet is arranged on the swing arm, the transmission unit is arranged in the housing space of the housing, and the transmission unit connects a worm of the driving motor and a driven end of the swing arm, the circuit board is arranged in the housing space of the housing and below the plate cover, and the driving motor and the coil unit are respectively connected to the circuit board.

[0025] According to one embodiment of the present application, the flange cover has a plurality of radial stiffeners respectively extending from an inner edge to an outer edge of the flange cover and a plurality of circumferential stiffeners respectively intersecting the radial stiffeners. BRIEF DESCRIPTION OF DRAWINGS

[0026] Fig. 1 is a perspective view of a flywheel assembly according to a first preferred embodiment of the present application.

[0027] Fig. 2 is another perspective view of the flywheel assembly according to the above preferred embodiment of the present application.

[0028] Fig. 3 is an exploded view of the flywheel assembly according to the above preferred embodiment of the present application.

[0029] Fig. 4 is another exploded view of the flywheel assembly according to the above preferred embodiment of the present application.

[0030] Fig. 5 is a sectional view of the flywheel assembly according to the above preferred embodiment of the present application.

[0031] Fig. 6 is an exploded view of an inner magnetic control device of the flywheel assembly according to the above preferred embodiment of the present application.

[0032] Fig. 7 is another exploded view of the inner magnetic control device of the flywheel assembly according to the above preferred embodiment of the present application.

[0033] Fig. 8 is a partial view of the flywheel assembly according to the above preferred embodiment of the present application.

[0034] Fig. 9 is a sectional view of a modified example of the flywheel assembly according to the above preferred embodiment of the present application.

[0035] Fig. 10 is a sectional view of another modified example of the flywheel assembly according to the above preferred embodiment of the present application.

[0036] Fig. 11 is a sectional view of still another modified example of the flywheel assembly according to the above preferred embodiment of the present application.

[0037] Fig. 12 is a perspective view of a flywheel assembly according to a second preferred embodiment of the present application.

[0038] Fig. 13 is another perspective view of the flywheel assembly according to the above preferred embodiment of the present application.

[0039] Fig. 14 is a top view of the flywheel assembly according to the above preferred embodiment of the present application.

[0040] FIG. 15 is a cross-sectional view of the flywheel assembly of the above-described preferred embodiment of the present application.

[0041] FIG. 16 is a perspective view of a flywheel assembly of a third preferred embodiment of the present application.

[0042] FIG. 17 is a perspective view of the flywheel assembly of the above-described preferred embodiment of the present application.

[0043] FIG. 18 is an exploded view of the flywheel assembly of the above-described preferred embodiment of the present application.

[0044] FIG. 19 is an exploded view of the flywheel assembly of the above-described preferred embodiment of the present application.

[0045] FIG. 20 is a cross-sectional view of the flywheel assembly of the above-described preferred embodiment of the present application.

[0046] FIG. 21 is a perspective view of an internal magnetic control device of the flywheel assembly of the above-described preferred embodiment of the present application.

[0047] FIG. 22 is a perspective view of the internal magnetic control device of the flywheel assembly of the above-described preferred embodiment of the present application.

[0048] FIG. 23 is an exploded view of the internal magnetic control device of the flywheel assembly of the above-described preferred embodiment of the present application.

[0049] FIG. 24 is an exploded view of the internal magnetic control device of the flywheel assembly of the above-described preferred embodiment of the present application.

[0050] FIG. 25 is an exploded view of the internal magnetic control device of the flywheel assembly of the above-described preferred embodiment of the present application. DETAILED DESCRIPTION

[0051] Before any embodiments of the application are explained in detail, it is to be understood that the application is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the following drawings. The application is capable of other embodiments and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of "including," "comprising," or "having" and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. Unless specified or limited otherwise, the terms "mounted," "connected," "supported," and "coupled" and variations thereof are used broadly and encompass both direct and indirect mountings, connections, supports, and couplings. Further, "connected" and "coupled" are not restricted to physical or mechanical connections or couplings.

[0052] Also, in the disclosure of the present application, the terms "longitudinal", "transverse", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the above terms cannot be understood as a limitation of the present application; secondly, the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of one element can be one, and in another embodiment, the number of the element can be multiple, the term "one" cannot be understood as a limitation of the number.

[0053] Referring to the drawings of the present application, Figs. 1 to 8, a flywheel assembly with power generation function according to a first preferred embodiment of the present application will be disclosed and described in the following description, wherein the flywheel assembly is used to assemble a fitness equipment, and the flywheel assembly can generate electricity while providing magnetic resistance when a user uses the fitness equipment for fitness. Specifically, the flywheel assembly comprises a flywheel 10, an inner magnetic control device 20, an assembly shaft 30, a flange 40, and a power generation device 50.

[0054] Referring to Figs. 3 to 5, the flywheel 10 comprises 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, and the conductor 12 is fixedly arranged on the flywheel body 11 and located in the flywheel cavity 111 of the flywheel body 11.

[0055] Specifically, in this specific example of the flywheel assembly of the present application, the flywheel body 11 comprises a disc 113 and a rim 114 integrally extending from the edge of the disc 113, the flywheel cavity 111 of the flywheel body 11 is formed between the disc 113 and the rim 114, and the flywheel center through hole 112 of the flywheel body 11 is formed in the disc 113. The conductor 12 is fixedly arranged on the inner wall of the rim 114, so that the conductor 12 is fixedly arranged on the flywheel body 11 and located in the flywheel cavity 111 of the flywheel body 11.

[0056] It is worth mentioning that the specific way of fixedly disposing the conductor 12 to the inner wall of the wheel ring 114 is not limited in the flywheel assembly of the present application. For example, in this specific example of the flywheel assembly shown in FIGS. 1-8, the conductor 12 is annular, and the outer diameter of the conductor 12 is consistent with the inner diameter of the wheel ring 114, based on the friction between the outer wall of the conductor 12 and the inner wall of the wheel ring 114, the conductor 12 can be fixedly disposed to the wheel ring 114. Preferably, in some embodiments of the flywheel assembly of the present application, the conductor 12 can be an aluminum ring.

[0057] With continued reference to FIGS. 3-5, the inner magnetic control device 20 has a device center hole 201, the assembly shaft 30 passes through the device center hole 201 of the inner magnetic control device 20 and the flywheel center hole 112 of the flywheel body 11, and the flywheel 10 is rotatable relative to the assembly shaft 30, wherein the flange 40 is fixedly sleeved to one end of the assembly shaft 30 and fixedly assembled to the inner magnetic control device 20, the flange 40 and the assembly shaft 30 cooperatively suspend the inner magnetic control device 20 in the flywheel cavity 111 of the flywheel body 11. When the flywheel 10 is driven to rotate relative to the inner magnetic control device 20, the conductor 12 cuts the magnetic induction lines of the inner magnetic control device 20 to generate eddy current, so that the flywheel assembly provides magnetic resistance. That is, the flywheel 10 is rotatably sleeved to one end of the assembly shaft 30, the inner magnetic control device 20 is fixedly sleeved to 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] That is, the inner magnetic control device 20 has a magnetic field, and at least a portion of the conductor 12 is located within the magnetic field of the inner magnetic control device 20, so that when the flywheel 10 is driven to rotate relative to the inner magnetic control device 20, the conductor 12 can cut the magnetic induction lines of the inner magnetic control device 20 to generate eddy current, so that the flywheel assembly provides magnetic resistance to help users exercise using the fitness equipment.

[0059] In this specific example of the flywheel assembly of the present application shown in FIGS. 1-8, the flywheel assembly includes a plurality of bearings 60, the bearing inner sides 61 of the bearings 60 are fixedly sleeved to the assembly shaft 30 at different positions of the assembly shaft 30, respectively, the bearing outer sides 62 of the bearings 60 are fixedly disposed to the flywheel body 11 at different positions of the flywheel body 11, respectively, so that the bearings 60 rotatably sleeve the flywheel 10 to the assembly shaft 30, so that the flywheel 10 is rotatable relative to the assembly shaft 30.

[0060] Further, the flywheel assembly comprises a circlip 70, which is clamped on the assembly shaft 30, and from a top view, the circlip 70 and the bearing inner side 61 of the bearing 60 have an overlapping part, so as to prevent the bearing 60 from moving along the extension direction of the assembly shaft 30 by the circlip 70. Specifically, the inner side of the circlip 70 is clamped into a clamping groove of the assembly shaft 30, and the outer side abuts against the bearing inner side 61 of the bearing 60, so as to prevent the bearing 60 from moving along the extension direction of the assembly shaft 30 by the circlip 70.

[0061] Specifically, referring to FIGS. 3 to 7, the inner magnetic control device 20 comprises a housing 21, a driving motor 22, a swing arm 23, a set of control magnets 24, and a transmission unit 25. The driving motor 22 is arranged in the housing 21. The swing arm 23 has opposite pivot end 231 and driven end 232. The pivot end 231 of the swing arm 23 is rotatably mounted on the edge of the housing 21. The control magnets 24 are arranged on the outer side of the swing arm 23 and are used to provide a magnetic field. The transmission unit 25 connects the worm 221 of the driving motor 22 and the driven end 232 of the swing arm 23. The inner magnetic control device 20 is suspended on the flywheel cavity 111 of the flywheel body 11 in a manner that the control magnets 24 face the conductor 12.

[0062] When the worm 221 of the driving motor 22 rotates in one direction, the transmission unit 25 is used to transmit power to the swing arm 23, so that the swing arm 23 drives the control magnets 24 to swing towards the conductor 12. At this time, when the flywheel 10 is driven to rotate relative to the inner magnetic control device 20, the magnetic resistance provided by the flywheel assembly is increased. Correspondingly, when the worm 221 of the driving motor 22 rotates in the other direction, the transmission unit 25 is used to transmit power to the swing arm 23, so that the swing arm 23 drives the control magnets 24 to swing away from the conductor 12. At this time, when the flywheel 10 is driven to rotate relative to the inner magnetic control device 20, the magnetic resistance provided by the flywheel assembly is decreased.

[0063] That is, by controlling the rotation direction of the worm 221 of the driving motor 22, the flywheel assembly can control the swing arm 23 and the control magnets 24 to swing towards or away from the conductor 12, so as to adjust the magnetic resistance provided by the flywheel assembly.

[0064] Further, the transmission unit 25 comprises 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, the second gear 252, the third gear 253 and the sector gear 254 are rotatably arranged in the housing 21, the first gear 251 is engaged with the worm 221 of the driving motor 22, the second gear 252 is engaged with the first gear 251, the third gear 253 is engaged with the second gear 252, the sector gear 254 is engaged with the third gear 253, opposite 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, so that when the worm 221 of the driving motor 22 rotates, the worm 221 of the driving 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 towards or away from the conductor 12.

[0065] Preferably, referring to FIG. 4, FIG. 6 and FIG. 7, the inner magnetic control device 20 further comprises a potentiometer 26, a fixed part of the potentiometer 26 is mounted on the housing 21, a movable part of the potentiometer 26 is mounted on the sector gear 254, wherein when the worm 221 of the driving 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 movable part of the potentiometer 26 to rotate, so as to change the resistance value of the potentiometer 26. It can be understood that the resistance value of the potentiometer 26 is related to the swing position of the swing arm 23, so 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, so that the magnetic resistance provided by the flywheel assembly can be effectively controlled.

[0066] Continuing to refer to FIGS. 3 to 7, the housing 21 includes a bottom shell 211 and a top cover 212, and the housing 21 has a housing space 213 and a lateral opening 214, the top cover 212 is installed on the bottom shell 211 to form the housing space 213 and the lateral opening 214 of the housing 21 between the bottom shell 211 and the top cover 212, wherein the driving motor 22, the swing arm 23 and the transmission unit 25 are respectively arranged in the housing space 213 of the housing 21, and the swing arm 23 is adjacent to the lateral opening 214 of the housing 21, wherein the lateral opening 214 of the housing 21 faces the conductor 12, so that the control magnet 24 and the conductor 12 can face each other. Specifically, the driving motor 22 is clamped by the bottom shell 211 and the top cover 212, so that the driving motor 22 is reliably arranged in the housing space 213 of the housing 21, the opposite sides of the pivot end 231 of the swing arm 23 are respectively rotatably installed on the bottom shell 211 and the top cover 212, so that the swing arm 23 is swingably arranged at the edge of the housing 21 adjacent to the lateral opening 214, and 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 respectively rotatably installed 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 arranged in the housing space 213 of the housing 21.

[0067] It is worth mentioning that the installation mode of the bottom shell 211 and the top cover 212 is not limited in the flywheel assembly of the present application. For example, in this specific example of the flywheel assembly shown in FIGS. 1 to 8, the bottom shell 211 and the top cover 212 can be installed on each other by a set of screws.

[0068] Referring to FIGS. 5 to 7, the bottom shell 211 has a bottom shell center hole 2110, the top cover 212 has a top cover center hole 2120, the position of the bottom shell center hole 2110 of the bottom shell 211 and the position of the top cover center hole 2120 of the top cover 212 are opposite to each other to form the device center through hole 201 of the inner magnetic control device 20 by the bottom shell center hole 2110 of the bottom shell 211 and the top cover center hole 2120 of the top cover 212.

[0069] Referring to FIGS. 6 to 8, the inner magnetic control device 20 includes a circuit board 27 disposed in the housing 21 and located in the housing space 213 of the housing 21 so as to be visually invisible, wherein the driving motor 22 and the potentiometer 26 are connected to the circuit board 27, respectively, and the circuit board 27 is capable of controlling the working state of the driving motor 22 according to the resistance signal fed back by the potentiometer 26. That is, the circuit board 27 is integrated with a control function, for example, the circuit board 27 can be attached with a logic chip or provided with a logic circuit, so that the circuit board 27 can control the working state of the driving motor 22 according to the resistance signal fed back by the potentiometer 26. Specifically, the circuit board 27 can be screwed to the bottom shell 211, so that the circuit board 27 is reliably disposed in the housing space 213 of the housing 21.

[0070] Further, the bottom shell 211 has an outer receiving groove 2111, a rotating shaft through hole 2112 and a wire through hole 2113, wherein the rotating shaft through hole 2112 and the wire through hole 2113 of the bottom shell 211 are communicated with the outer receiving groove 2111 and the housing space 213 of the housing 21, respectively, wherein 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 mounted to the sector gear 254 after passing through the rotating shaft through hole 2112 of the bottom shell 211, wherein the inner magnetic control device 20 includes a wire 28, one end of which is connected to the fixed part of the potentiometer 26, and the other end of which extends to the housing space 213 of the housing 21 after passing through the wire through hole 2113 of the bottom shell 211, and the wire 28 is connected to the circuit board 27. It can be understood that the driving motor 22 is connected to the circuit board 27 through the wire 28, so that the circuit board 27 can control the working state of the driving motor 22 according to the resistance signal fed back by the potentiometer 26.

[0071] Preferably, the bottom shell 211 has a bottom shell outer limiting protrusion 2114 and a bottom shell inner limiting protrusion 2115, which protrude towards the housing space 213 of the outer shell 21 respectively, the top cover 212 has a top cover outer limiting protrusion 2121 and a top cover inner limiting protrusion 2122, which protrude towards the housing space 213 of the outer shell 21 respectively, wherein the position of the bottom shell outer limiting protrusion 2114 of the bottom shell 211 and the position of the top cover outer limiting protrusion 2121 of the top cover 212 correspond and are located at the outer side of the swing arm 23, for limiting the maximum distance of the swing arm 23 swinging outwards, avoiding the control magnet 24 colliding with the conductor 12, the position of the bottom shell inner limiting protrusion 2115 of the bottom shell 211 and the position of the top cover inner limiting protrusion 2122 of the top cover 212 correspond and are located at the inner side of the swing arm 23, for limiting the maximum distance of the swing arm 23 swinging inwards, avoiding the swing arm 23 colliding with the circuit board 27.

[0072] Referring to FIGS. 3 to 5, the power generation device 50 comprises a coil unit 51 and at least one power generation magnet 52, the coil unit 51 is configured to keep still relative to the position of the assembly shaft 30, the power generation magnet 52 is arranged on the flywheel body 11, so that the power generation magnet 52 can rotate with the rotation of the flywheel 10, in the circumferential direction, the position of the coil unit 51 and the position of the power generation magnet 52 are opposite, and the coil unit 51 and the power generation magnet 52 are both located at the device center perforation 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 this time the coil unit 51 generates current and the flywheel assembly has the function of power generation. It can be understood that the circumferential direction is the rotation direction of the flywheel 10.

[0073] Referring to FIG. 3, in the flywheel assembly of the present application, the coil unit 51 and the power generation magnet 52 of the power generation device 50 are both located at the device center perforation 201 of the inner magnetic control device 20, which makes the power generation device 50 not need to occupy additional space, thereby being beneficial to reduce the volume of the flywheel assembly and make the appearance of the flywheel assembly regular, so that the flywheel assembly can match different types of fitness equipment.

[0074] With continued reference to FIGS. 3-5, 8, the coil unit 51 includes a coil holder 511 having an even number of winding teeth 5111, each of which is wound with one of the coils 512, and the coil holder 511 is fixedly disposed on the flange 40, which causes the coil unit 51 to be configured to remain stationary relative to the position of the assembly 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, and it is understood that because the coil unit 51 is fixedly disposed on the flange 40, which is fixedly disposed on the inner magnetic control device 20, the relative positions of the coil unit 51 and the circuit board 27 remain stationary, which facilitates the connection of the coils 512 to the circuit board 27. Alternatively, in other examples of the flywheel assembly of the present application, the flywheel assembly can also 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] In particular, in this particular example of the flywheel assembly of the present application shown in FIGS. 1-8, the flange 40 includes a flange body 41, at least one transversely extending arm 42 and a longitudinally extending arm 43, which are integrally extended from the flange body 41 in different directions, respectively, wherein the flange body 41 is fixedly sleeved on the assembly shaft 30, the transversely extending arm 42 is fixedly mounted on the inner magnetic control device 20, for example, screws can be used to lock the transversely extending arm 42 and the inner magnetic control device 20, so that the transversely extending arm 42 is fixedly mounted on the inner magnetic control device 20, and the longitudinally extending arm 43 extends to the device center hole 201 of the inner magnetic control device 20, wherein the coil holder 511 of the coil unit 51 is fixedly sleeved on the longitudinally extending arm 43 of the flange 40, so that the longitudinally extending arm 43 of the flange 40 causes the coil unit 51 to be configured to remain stationary relative to the position of the assembly shaft 30 and to be disposed on the device center hole 201 of the inner magnetic control device 20.

[0076] The flywheel body 11 further comprises an assembling ring 115, the assembling ring 115 extends from the wheel disc 113 to the device center hole 201 of the inner magnetic control device 20, and the assembling ring 115 surrounds the assembling shaft 30, wherein the power generation magnet 52 is arranged on the assembling ring 115 of the flywheel body 11, so that the assembling ring 115 of the flywheel body 11 is used to arrange the power generation magnet 52 on the device center hole 201 of the inner magnetic control device 20, and the position of the power generation magnet 52 and the position of the coil unit 51 correspond in the circumferential direction, so that 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 to generate electricity for the power generation device 50. Preferably, the assembling ring 1151 has a ring groove 1151, and the power generation magnet 52 is located in the ring groove 1151 of the assembling ring 115.

[0077] Preferably, in this specific example of the flywheel assembly of the application, the number of power generation magnets 52 is multiple, and these power generation magnets 52 are arranged in a ring shape on the assembling ring 115 of the flywheel body 11.

[0078] It can be understood that when the flywheel 10 is driven to rotate relative to the inner magnetic control device 20 to make the conductor 12 cut the magnetic induction lines of the inner magnetic control device 20 to generate eddy current, the conductor 12 will generate a large amount of heat. In the flywheel assembly of the application, in order to achieve rapid heat dissipation of the flywheel assembly, the inner magnetic control device 20 is provided with at least one heat dissipation space 202 at the edge, and the heat dissipation space 202 penetrates through opposite sides of the inner magnetic control device 20 in the thickness direction of the inner magnetic control device 20, and a part of the conductor 12 is exposed to the heat dissipation space 202 of the inner magnetic control device 20, so that the heat generated by the conductor 12 when cutting the magnetic induction lines of the inner magnetic control device 20 can be quickly radiated to the external environment through the heat dissipation space 202 of the inner magnetic control device 20, to achieve rapid heat dissipation of the flywheel assembly.

[0079] Referring to FIGS. 3 and 4, in this specific example of the flywheel assembly of the application, the inner magnetic control device 20 is recessed from the edge to the device center hole 201 to form the heat dissipation space 202, so that a part of the conductor 12 is exposed to the heat dissipation space 202 of the inner magnetic control device 20, so that the heat generated by the conductor 12 when cutting the magnetic induction lines of the inner magnetic control device 20 can be quickly radiated to the external environment through the heat dissipation space 202 of the inner magnetic control device 20, to achieve rapid heat dissipation of the flywheel assembly. Preferably, the heat dissipation space 202 of the inner magnetic control device 20 is in a fan shape.

[0080] Specifically, the edge of the bottom shell 211 has a sector-shaped bottom shell gap 2116, the edge of the top cover 212 has a sector-shaped top cover gap 2123, the position of the bottom shell gap 2116 of the bottom shell 211 corresponds to the position of the top cover gap 2123 of the top cover 212, so that the bottom shell gap 2116 of the bottom shell 211 and the top cover gap 2123 of the top cover 212 form the heat dissipation space 202 of the inner magnetic control device 20. Preferably, in this specific example of the flywheel assembly shown in FIGS. 1 to 8, the shell space 213 of the outer shell 21 and the heat dissipation space 202 of the inner magnetic control device 20 are in communication, so that when the flywheel 10 is driven to rotate relative to the inner magnetic control device 20, the heat generated by the conductor 12 can be quickly radiated to the heat dissipation space 202 of the inner magnetic control device 20 through the shell space 213 of the outer shell 21, and further radiated to the external environment through the heat dissipation space 202, so as to achieve rapid heat dissipation of the flywheel assembly. Specifically, the outer shell 21 forms a through opening 215 between the bottom shell 211 and the top cover 212, which is in communication with the shell space 213 and the heat dissipation space 202.

[0081] With continued reference to FIGS. 1 to 5, 8, the flywheel body 11 has at least one flywheel heat dissipation hole 1131, which is in communication with the flywheel cavity 111 of the flywheel body 11 and the external environment, wherein the position of the heat dissipation space 202 of the inner magnetic control device 20 corresponds to the rotation path of the flywheel heat dissipation hole 1131 of the flywheel body 11, so that when the flywheel 10 is driven to rotate relative to the inner magnetic control device 20, the space on both sides of the flywheel assembly can be convected through the flywheel heat dissipation hole 1131 of the flywheel body 11 and the heat dissipation space 202 of the inner magnetic control device 20, so as to achieve rapid heat dissipation of the flywheel assembly. Preferably, the number of flywheel heat dissipation holes 1131 of the flywheel body 11 is multiple, and these flywheel heat dissipation holes 1131 are arranged in a ring around the assembly shaft 30.

[0082] It can be understood that when the flywheel 10 is driven to rotate relative to the inner magnetic control device 20 to make the power generation device 50 generate electricity, the power generation device 50 will generate a large amount of heat. In the flywheel assembly of the present application, in order to achieve the rapid heat dissipation of the flywheel assembly, the device center hole 201 of the inner magnetic control device 20 forms the heat dissipation space 202, in order to avoid the flange 40 covering the heat dissipation space 202 of the inner magnetic control device 20 formed by the device center hole 201, the number of the transversely extending arms 42 of the flange 40 is implemented to be more than two, for example, in this specific example of the flywheel assembly of the present application shown in FIGS. 1 to 8, the number of the transversely extending arms 42 of the flange 40 is three, the three transversely extending arms 42 are spaced from each other to form a gap 44 of the flange 40 between any two of the transversely extending arms 42, wherein each of the transversely extending arms 42 of the flange 40 can be locked to the inner magnetic control device 20 by a screw, the gap 44 of the flange 40 is opposite to the position of the device center hole 201 of the inner magnetic control device 20, so that the heat dissipation space 202 of the inner magnetic control device 20 formed by the device center hole 201 is communicated with the external environment through the gap 44 of the flange 40, so that the heat generated by the power generation device 50 can be rapidly radiated to the external environment through the heat dissipation space 202 of the inner magnetic control device 20 formed by the device center hole 201 and the gap 44 of the flange 40, so as to achieve the rapid heat dissipation of the flywheel assembly.

[0083] FIG. 9 shows a variant example of the flywheel assembly of the present application, which is different from the flywheel assembly shown in FIGS. 1 to 8, in this specific example of the flywheel assembly of the present application shown in FIG. 9, the coil unit 51 is fixedly arranged on the inner magnetic control device 20, so that the coil unit 51 is configured to be fixed relative to the position of the assembly shaft 30 by the inner magnetic control device 20. Specifically, the edge of the top cover 212 of the outer shell 21 for defining the top cover center hole 2120 has a top cover ring 2124 extending towards the bottom shell center hole 2110 of the bottom shell 211, the coil support 511 of the coil unit 51 is fixedly sleeved on the top cover ring 2124 of the top cover 212, so that the coil unit 51 is fixedly arranged on the inner magnetic control device 20, so that the coil unit 51 is configured to be fixed relative to the position of the assembly shaft 30 by the inner magnetic control device 20. It can be understood that in this example of the flywheel assembly shown in FIG. 9, the power generation magnet 52 surrounds the outside of the coil unit 51.

[0084] Optionally, in this specific example of the flywheel assembly shown in FIG. 10, the coil unit 51 can also be fixedly arranged in the bottom shell 211 of the outer shell 21 of the inner magnetic control device 20, so that the coil unit 51 is configured to remain stationary relative to the position of the assembly shaft 30, wherein the coil unit 51 is wrapped around the outside of the power generation magnet 52.

[0085] FIG. 11 shows a variant example of the flywheel assembly of the present application, which is different from the flywheel assembly shown in FIGS. 1 to 8 in that, in this specific example of the flywheel assembly of the present application shown in FIG. 11, the coil unit 51 can be fixedly sleeved on the assembly shaft 30, so that the coil unit 51 is configured to remain stationary relative to the position of the assembly shaft 30.

[0086] FIGS. 12 to 15 show the flywheel assembly according to the second preferred embodiment of the present application, which is different from the flywheel assembly of the first preferred embodiment of the present application shown in FIGS. 1 to 8 in that, in this specific example of the flywheel assembly shown in FIGS. 12 to 15, the inner magnetic control device 20 has at least one pair of through-flow holes 203, which penetrate through opposite sides of the inner magnetic control device 20 in the thickness direction of the inner magnetic control device 20, and which are located between the device center hole 201 and the edge of the inner magnetic control device 20 from the perspective of the top view. By providing the pair of through-flow holes 203 in the inner magnetic control device 20, when the flywheel 10 is driven to rotate relative to the inner magnetic control device 20, on the one hand, the heat generated by the conductor 12 can be radiated to the external environment through the pair of through-flow holes 203 of the inner magnetic control device 20 to improve the heat dissipation speed of the flywheel assembly, and on the other hand, the pair of through-flow holes 203 of the inner magnetic control device 20 prevent the heat generated by the conductor 12 from being radiated to the power generation device 50, so as to prevent the temperature of the working 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 through-flow hole 2117 that communicates the shell space 213 of the outer shell 21 with the external environment, the top cover 212 has a top cover through-flow hole 2124 that communicates the shell space 213 of the outer shell 21 with the external environment, and the position of the bottom shell through-flow hole 2117 of the bottom shell 211 and the position of the top cover through-flow hole 2124 of the top cover 212 correspond to each other to form the pair of through-flow holes 203 that penetrate through opposite sides of the inner magnetic control device 20.

[0088] Preferably, the positions of the convection holes 203 of the inner magnetic control device 20 and the rotating paths of the flywheel heat dissipation holes 1131 of the flywheel body 11 correspond to each other, so that when the flywheel 10 is driven to rotate relative to the inner magnetic control device 20, the spaces on the opposite sides of the flywheel assembly can be convected through the flywheel heat dissipation holes 1131 of the flywheel body 11 and the convection holes 203 of the inner magnetic control device 20 to achieve rapid heat dissipation of the flywheel assembly.

[0089] Referring to Figs. 12, 14 and 15, the inner magnetic control device 20 further has a heat dissipation groove 204 formed by thinning a portion of the edge of the inner magnetic control device 20, and a portion of the conductor 12 is exposed to the heat dissipation groove 204 of the inner magnetic control device 20 in the circumferential direction, so that when the flywheel 10 is driven to rotate relative to the inner magnetic control device 20 to cause the conductor 12 to cut the magnetic induction lines of the inner magnetic control device 20 to generate eddy current, the heat generated by the conductor 12 can be rapidly radiated to the external environment to achieve rapid heat dissipation of the flywheel assembly.

[0090] Figs. 16 to 25 show the flywheel assembly according to a third preferred embodiment of the present application, which comprises a flywheel 10A, an inner magnetic control device 20A, an assembly shaft 30A and a power generation device 50A.

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

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

[0093] It is worth mentioning that the specific way of fixedly disposing the conductor 12A on the inner wall of the wheel ring 114A is not limited in the flywheel assembly of the present application. For example, in this specific example of the flywheel assembly shown in FIGS. 16-25, the conductor 12A is in the form of a ring, and the outer diameter of the conductor 12A is the same as the inner diameter of the wheel ring 114A, based on the friction between the outer wall of the conductor 12A and the inner wall of the wheel ring 114A, the conductor 12A can be fixedly disposed on the wheel ring 114A. Preferably, in some embodiments of the flywheel assembly of the present application, the conductor 12A can be an aluminum ring.

[0094] The flywheel 10A is rotatably sleeved on one end of the assembly shaft 30A, the inner magnetic control device 20A is fixedly sleeved on the other end of the assembly shaft 30A, and the inner magnetic control device 20A is suspended in the flywheel cavity 111A of the flywheel 10A. When the flywheel 10A is driven to rotate relative to the inner magnetic control device 20A, the conductor 12A cuts the magnetic induction lines of the inner magnetic control device 20A to generate eddy current, so that the flywheel assembly provides magnetic resistance. That is, the inner magnetic control device 20A has a magnetic field, and at least a part of the conductor 12A is located within the magnetic field of the inner magnetic control device 20A, so that when the flywheel 10A is driven to rotate relative to the inner magnetic control device 20A, the conductor 12A can cut the magnetic induction lines of the inner magnetic control device 20A to generate eddy current, so that the flywheel assembly provides magnetic resistance.

[0095] Specifically, the inner magnetic control device 20A has a device central through hole 201A and a screw hole 206A communicated with the device central through hole 201A, after one end of the assembly shaft 30A passes through the device central through hole 201A of the inner magnetic control device 20A, the assembly shaft 30A closes the inner side opening of the screw hole 206A of the inner magnetic control device 20A, wherein the flywheel assembly includes a threaded pin 80A, the threaded pin 80A is screwed in the screw hole 206A of the inner magnetic control device 20A, and the inner end of the threaded pin 80A abuts against the assembly shaft 30A, so that the inner magnetic control device 20A is fixedly sleeved on the assembly shaft 30A. Preferably, the device central through hole 201A of the inner magnetic control device 20A is a non-circular through hole, the part of the assembly shaft 30A held in the device central through hole 201A of the inner magnetic control device 20A is also non-circular, and the shape and size of the part of the assembly shaft 30A held in the device central through hole 201A of the inner magnetic control device 20A are consistent with the shape and size of the device central through hole 201A of the inner magnetic control device 20A, so that after the part of the assembly shaft 30A is located in the device central through hole 201A of the inner magnetic control device 20A, the flywheel assembly can avoid the rotation of the assembly shaft 30A relative to the inner magnetic control device 20A.

[0096] That is, in this specific example of the flywheel assembly of the application shown in FIGS. 16-25, the flywheel assembly does not need to fix the inner magnetic control device 20A and the assembly shaft 30A by means of a flange, but directly fixes one end of the assembly shaft 30A on the inner magnetic control device 20A, in this way, not only can reduce the cost of the flywheel assembly, but also can improve the assembly efficiency of the flywheel assembly.

[0097] In this specific example of the flywheel assembly of the application shown in FIGS. 16-25, the flywheel assembly includes a plurality of bearings 60A, the bearing inner sides 61A of the bearings 60A are respectively fixedly sleeved on the assembly shaft 30A at different positions of the assembly shaft 30A, and the bearing outer sides 62A of the bearings 60A are respectively fixedly arranged on the flywheel body 11A at different positions of the flywheel body 11A, so that the bearings 60A rotatably sleeve the flywheel 10A on the assembly shaft 30A, so that the flywheel 10A is rotatable relative to the assembly shaft 30A.

[0098] Further, the flywheel assembly comprises a snap ring 70A, which is snap-fitted on the assembly shaft 30A, and from a top view, the snap ring 70A and the bearing inner side 61A of the bearing 60A have an overlapping portion, so as to prevent the bearing 60A from moving along the extension direction of the assembly shaft 30A by the snap ring 70A. Specifically, the inner side of the snap ring 70A is snap-fitted into a snap groove of the assembly shaft 30A, and the outer side abuts against the bearing inner side 61A of the bearing 60A, so as to prevent the bearing 60A from moving along the extension direction of the assembly shaft 30A by the snap ring 70A.

[0099] Specifically, the inner magnetic control device 20A comprises a housing 21A, a driving motor 22A, a swing arm 23A, a set of control magnets 24A, and a transmission unit 25A, wherein the driving motor 22A is arranged in the housing 21A, wherein the swing arm 23A has opposite pivot end 231A and driven end 232A, the pivot end 231A of the swing arm 23A is rotatably mounted on the edge of the housing 21A, wherein the control magnets 24A are arranged on the outer side of the swing arm 23A, and the control magnets 24A are used to provide magnetic field, wherein the transmission unit 25A connects the worm 221A of the driving motor 22A and the driven end 232A of the swing arm 23A. The inner magnetic control device 20A is suspended in the flywheel cavity 111A of the flywheel body 11A in a face-to-face manner with the conductor 12A and the control magnets 24A.

[0100] When the worm 221A of the driving motor 22A rotates in one direction, the transmission unit 25A is used to transmit power to the swing arm 23A, so that the swing arm 23A drives the control magnets 24A to swing towards the conductor 12A, and at this time, when the flywheel 10A is driven to rotate relative to the inner magnetic control device 20A, the magnetic resistance provided by the flywheel assembly is increased. Correspondingly, when the worm 221A of the driving motor 22A rotates in the other direction, the transmission unit 25A is used to transmit power to the swing arm 23A, so that the swing arm 23A drives the control magnets 24A to swing away from the conductor 12A, and at this time, when the flywheel 10A is driven to rotate relative to the inner magnetic control device 20A, the magnetic resistance provided by the flywheel assembly is reduced.

[0101] That is, by controlling the rotation direction of the worm 221A of the driving motor 22A, the flywheel assembly can control the swing arm 23A and the control magnets 24A to swing towards or away from the conductor 12A, so as to adjust the magnetic resistance provided by the flywheel assembly.

[0102] Further, the transmission unit 25A comprises 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 rotatably arranged in the housing 21A, the first gear 251A is engaged with the worm 221A of the driving motor 22A, the second gear 252A is engaged with the first gear 251A, the third gear 253A is engaged with the second gear 252A, the sector gear 254A is engaged with the third gear 253A, opposite ends of the connecting rod 255A are rotatably mounted on the sector gear 254A and the driven end 232A of the swing arm 23A respectively, so that when the worm 221A of the driving motor 22A rotates, the worm 221A of the driving 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 towards the conductor 12A or away from the conductor 12A.

[0103] Preferably, referring to FIG. 4, FIG. 6 and FIG. 7, the inner magnetic control device 20A further comprises a potentiometer 26A, a fixed part of the potentiometer 26A is mounted on the housing 21A, a movable part of the potentiometer 26A is mounted on the sector gear 254A, wherein when the worm 221A of the driving 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 movable part of the potentiometer 26A to rotate, so as to change the resistance of the potentiometer 26A. It can be understood that the resistance of the potentiometer 26A is related to the swing position of the swing arm 23A, so the flywheel assembly can determine the position of the swing arm 23A and the control magnet 24A by detecting the resistance of the potentiometer 26A, so that 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 installed 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, wherein the driving motor 22A, the swing arm 23A and the transmission unit 25A are respectively arranged 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 driving motor 22A is clamped by the bottom shell 211A and the top cover 212A, so that the driving motor 22A is reliably arranged in the housing space 213A of the housing 21A, the opposite sides of the pivot end 231A of the swing arm 23A are respectively rotatably installed on the bottom shell 211A and the top cover 212A, so that the swing arm 23A is swingably arranged at the edge of the housing 21A adjacent to the side opening 214A, and 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 respectively rotatably installed 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 arranged in the housing space 213A of the housing 21A.

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

[0107] The inner magnetic control device 20A comprises a circuit board 27A, which is arranged in the shell 21A and located in the shell space 213A of the shell 21A so as to be visually invisible, wherein the driving motor 22A and the potentiometer 26A are connected to the circuit board 27A respectively, and the circuit board 27A can control the working state of the driving motor 22A according to the resistance signal fed back by the potentiometer 26A. That is, the circuit board 27A is integrated with a control function, for example, the circuit board 27A can be attached with a logic chip or provided with a logic circuit, so that the circuit board 27A can control the working state of the driving motor 22A according to the resistance signal fed back by the potentiometer 26A. Preferably, the circuit board 27A is locked to the bottom shell 211A by screws, so that the circuit board 27A can be reliably arranged in the shell space 213A of the shell 21A.

[0108] Further, the top cover 212A comprises a plate cover 2125A and a flange cover 2126A, which are independently mounted on the bottom shell 211A respectively, the shell 21A forms a part of the shell space 213A between the plate cover 2125A and the bottom shell 211A, forms another part of the shell space 213A between the flange cover 2126A and the bottom shell 211A, and forms the side opening 214A between the flange cover 2126A and the bottom shell 211A. In the flywheel assembly of the application, the plate cover 2125A can be mounted on the bottom shell 211A by at least one screw, the flange cover 2126A can be mounted on the bottom shell 211A by at least one screw, and the plate cover 2125A and the flange cover 2126A are independent of each other, that is, the mounting and dismounting of the plate cover 2125A does not affect the mounting relationship of the flange cover 2126A and the bottom shell 211A.

[0109] The opposite sides of the pivot end 231A of the swing arm 23A are rotatably mounted to the bottom shell 211A and the flange cover 2126A, so that the swing arm 23A is swingably arranged at the edge of the outer shell 21A adjacent to the side opening 214A of the outer shell 21A. 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 to the bottom shell 211A and the flange cover 2126A, so that the first gear 251A, the second gear 252A, the third gear 253A and the sector gear 254A are reliably arranged 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 detached from the bottom shell 211A, the circuit board 27A is exposed to facilitate the maintenance of the circuit board 27A. After the plate cover 2125A is detached, the flange cover 2126A is still mounted to the bottom shell 211A, so that the mounting relationship of the outer shell 21A, the drive motor 22A, the swing arm 23A, the control magnet 24A and the transmission unit 25A is not affected. 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-in end of the connecting line of the external device is inserted into the wiring terminal 271A of the circuit board 27A through the terminal through hole 21251A of the plate cover 2125A.

[0110] The top cover center perforation 201A and the screw hole 206A of the inner magnetic control device 20A are formed in the flange cover 2126A, and the threaded pin 80A is used to install the flange cover 2126A and the assembly shaft 30A, so that when the flywheel 10A is driven to rotate relative to the inner magnetic control device 20A, the flange cover 2126A is the direct force-bearing part of the inner magnetic control device 20A, and the force-bearing mode is single-point force-bearing. In order to improve the deformation resistance of the bottom shell 211A and the flange cover 2126A, in this specific example of the flywheel assembly of the present application shown in FIGS. 16-25, on the one hand, the bottom shell 211A and the flange cover 2126A are made of a composite material of PA66 reinforced by 30% glass fiber, and on the other hand, the flange cover 2126A has a plurality of radial reinforcing ribs 21261A extending from the inner edge to the outer edge of the flange cover 2126A, and a plurality of circumferential reinforcing ribs 21262A intersecting with the radial reinforcing ribs 21261A. In this way, when the flywheel 10A is driven to rotate relative to the inner magnetic control device 20A, the tensile force 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 deform to a large extent. For example, when the tensile force 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, so that the flywheel assembly can avoid shaking and uneven resistance.

[0111] Further, the bottom shell 211A has an outer receiving groove 2111A, a rotating shaft through hole 2112A and a wire through hole 2113A, the rotating shaft through hole 2112A and the wire through hole 2113A of the bottom shell 211A respectively communicate with the outer receiving groove 2111A and the shell space 213A of the outer shell 21A, wherein the fixed part of the potentiometer 26A is received in the outer receiving groove 2111A of the bottom shell 211A, the movable part of the potentiometer 26A is installed in the sector gear 254A after passing through the rotating shaft through hole 2112A of the bottom shell 211A, wherein the inner magnetic control device 20A includes a wire 28A, one end of the wire 28A is connected to the fixed part of the potentiometer 26A, the other end of the wire 28A extends to the shell space 213A of the outer shell 21A after passing through the wire through hole 2113A of the bottom shell 211A, and the wire 28A is connected to the circuit board 27A. It can be understood that the driving motor 22A is connected to the circuit board 27A through the wire 28A, so that the circuit board 27A can control the working state of the driving motor 22A according to the resistance signal fed back by the potentiometer 26A.

[0112] Preferably, the bottom shell 211A has a bottom shell outer limiting protrusion 2114A and a bottom shell inner limiting protrusion 2115A, the bottom shell outer limiting protrusion 2114A and the bottom shell inner limiting protrusion 2115A respectively protrude towards the shell space 213A of the outer shell 21A, the top cover 212A has a top cover outer limiting protrusion 2121A and a top cover inner limiting protrusion 2122A, the top cover outer limiting protrusion 2121A and the top cover inner limiting protrusion 2122A are formed on the flange cover 2126A and respectively protrude towards the shell space 213A of the outer shell 21A, wherein the position of the bottom shell outer limiting protrusion 2114A of the bottom shell 211A and the position of the top cover outer limiting protrusion 2121A of the top cover 212A correspond and are located on the outer side of the swing arm 23A, for limiting the maximum distance of the swing arm 23A swinging outward, avoiding the control magnet 24A colliding with the conductor 12A, the position of the bottom shell inner limiting protrusion 2115A of the bottom shell 211A and the position of the top cover inner limiting protrusion 2122A of the top cover 212A correspond and are located on the inner side of the swing arm 23A, for limiting the maximum distance of the swing arm 23A swinging inward, avoiding the swing arm 23A colliding with the circuit board 27A.

[0113] The power generation device 50A includes a coil unit 51A configured to be fixed relative to the position of the assembly shaft 30A, and at least one power generation magnet 52A disposed on the flywheel body 11A so as to be rotatable with the flywheel 10A, the position of the coil unit 51A and the position of the power generation magnet 52A are opposite in the circumferential direction, and the coil unit 51A and the power generation magnet 52A are both located in the device center 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, and at this time the coil unit 51A generates current and the flywheel assembly has a power generation function. It can be understood that the circumferential direction is the rotation direction of the flywheel 10A.

[0114] In the flywheel assembly of the present application, the coil unit 51A and the power generation magnet 52A of the power generation device 50A are both located in the device center hole 201A of the inner magnetic control device 20A, which makes the power generation device 50A not need to occupy additional space, thereby facilitating the reduction of the volume of the flywheel assembly and making the appearance of the flywheel assembly regular, so that the flywheel assembly can match different types of fitness equipment.

[0115] The coil unit 51A includes a coil support 511A having an even number of winding teeth 5111A, each winding tooth 5111A is respectively wound with a coil 512A, and the coil support 511A is fixedly disposed on the flange cover 2126A, and the flange cover 2126A7 makes the coil unit 51A configured to be fixed relative to the position of the assembly shaft 30A. Specifically, the flange cover 2126A has a protruding column 21263A protruding towards the bottom shell center hole 2110A of the bottom shell 211A, and the coil support 511A is fixedly sleeved on the protruding column 21263A of the flange cover 2126A, so that the coil support 511A is fixedly disposed on the flange cover 2126A.

[0116] The flywheel body 11A further comprises an assembling ring 115A, which extends from the wheel disc 113A to the bottom shell center hole 2110A of the bottom shell 211A, and the assembling ring 115A surrounds the assembling shaft 30A, wherein the power generation magnet 52A is arranged on the assembling ring 115A of the flywheel body 11A, so that the assembling ring 115A of the flywheel body 11A is used to arrange the power generation magnet 52A on the device center perforation 201A of the inner magnetic control device 20A, and the position of the power generation magnet 52A and the position of the coil unit 51A correspond in the circumferential direction, so that 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 to generate electricity for the power generation device 50A. Preferably, the assembling ring 115A has a ring groove 1151A, and the power generation magnet 52A is located in the ring groove 1151A of the assembling ring 115A.

[0117] Preferably, in this specific example of the flywheel assembly of the present application, the number of power generation magnets 52A is multiple, and these power generation magnets 52A are arranged in a ring shape on the assembling 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 driving motor 22A to work. It can be understood that since the coil support 511A of the coil unit 51A is fixedly sleeved on the protruding column 21263A of the flange cover 2126A, the relative position of the coil unit 51A and the circuit board 27A remains unchanged, so as to facilitate the connection of the coil 512A and the circuit board 27A. Specifically, the flange cover 2126A has a cover perforation 21264A, and the plate cover 2125A has a cover notch 21252A, the position of the cover notch 21252A of the plate cover 2125A corresponds to the position of the cover perforation 21264A of the flange cover 2126A, wherein the connecting line of the coil 512A extends to the shell space 213A of the outer shell 21A through the cover perforation 21264A of the flange cover 2126A and the cover notch 21252A of the plate cover 2125A, so that the coil 512A is connected to the circuit board 27A.

[0119] It can be understood that when the flywheel 10A is driven to rotate relative to the inner magnetic control device 20A to make the conductor 12A cut the magnetic induction lines of the inner magnetic control device 20A to generate eddy current, the conductor 12A will generate a large amount of heat. In the flywheel assembly of the present application, in order to achieve the rapid heat dissipation of the flywheel assembly, the inner magnetic control device 20A is provided with at least one heat dissipation space 202A at the edge, the heat dissipation space 202A penetrates through the opposite sides of the inner magnetic control device 20A in the thickness direction of the inner magnetic control device 20A, and a part of the conductor 12A is exposed to the heat dissipation space 202A of the inner magnetic control device 20A, so that the heat generated by the conductor 12A when cutting the magnetic induction lines of the inner magnetic control device 20A can be quickly radiated to the external environment through the heat dissipation space 202A of the inner magnetic control device 20A, to achieve the rapid heat dissipation of the flywheel assembly.

[0120] In this specific example of the flywheel assembly of the present application, the inner magnetic control device 20A is recessed from the edge to the center of the device in the direction of the hole 201A to form the heat dissipation space 202A, so that a part of the conductor 12A is exposed to the heat dissipation space 202A of the inner magnetic control device 20A, so that the heat generated by the conductor 12A when cutting the magnetic induction lines of the inner magnetic control device 20A can be quickly radiated to the external environment through the heat dissipation space 202A of the inner magnetic control device 20A, to achieve the rapid heat dissipation of the flywheel assembly. Preferably, the heat dissipation space 202A of the inner magnetic control device 20A is fan-shaped.

[0121] The bottom shell 211A further has at least one bottom shell convection hole 2117A which communicates the shell space 213A of the outer shell 21A with the external environment, and the top cover 212A has a top cover convection hole 2124A which is formed in the flange cover 2126A, and the top cover convection hole 2124A communicates the shell space 213A of the outer shell 21A with the external environment. When the flywheel 10A is driven to rotate relative to the inner 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 greatly improve the heat dissipation speed of the flywheel assembly.

[0122] The inner magnetic control device 20A further has a heat dissipation groove 204A 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 inner magnetic control device 20A. Thus, when the flywheel 10A is driven to rotate relative to the inner magnetic control device 20A so that the conductor 12A cuts the magnetic induction lines of the inner magnetic control device 20A to 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] It should be understood that the above description and the accompanying drawings are only examples of the embodiments of the present application and do not limit the present application. The purpose of the present application has been fully and effectively achieved. The functional and structural principles of the present application have been demonstrated and described in the embodiments, and the embodiments of the present application can be modified or changed in any way without departing from the principles.

Claims

1. A flywheel assembly having power generation functionality, characterised in that, The flywheel assembly comprises: an assembly shaft; an inner magnetic control device, wherein the inner magnetic control device is fixedly fitted to one end of the assembly shaft; a flywheel, wherein the flywheel comprises a flywheel body having a flywheel cavity and a flywheel center hole communicating with the flywheel cavity, and a conductor fixedly arranged in the flywheel body and located in the flywheel cavity, the other end of the assembly shaft passes through the flywheel center hole of the flywheel body, and the flywheel is rotatable relative to the assembly shaft, wherein the inner magnetic control device is suspended in the flywheel cavity of the flywheel body; and a power generation device, wherein the power generation device comprises a coil unit configured to remain stationary relative to the position of the assembly shaft, and a power generation magnet arranged in the flywheel body, and the position of the coil unit and the position of the power generation magnet are opposite in the circumferential direction.

2. The flywheel assembly according to claim 1, wherein the inner magnetic control device has a device center hole, one end of the assembly shaft passes through the device center hole of the inner magnetic control device, and the coil unit and the power generation magnet are both located in the device center hole of the inner magnetic control device.

3. The flywheel assembly according to claim 2, wherein the flywheel assembly comprises a flange fixedly fitted to one end of the assembly shaft and fixedly fitted to the inner magnetic control device, and the flange and the assembly shaft cooperate to suspend the inner magnetic control device in the flywheel cavity of the flywheel body.

4. The flywheel assembly according to claim 2, wherein the inner magnetic control device 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 magnetic control device has a heat dissipation space penetrating through opposite sides of the inner magnetic control device in the thickness direction of the inner magnetic control device.

6. The flywheel assembly according to claim 5, wherein the heat dissipation space of the inner magnetic control device is located at the edge of the inner magnetic control device.

7. The flywheel assembly according to claim 5, wherein the flywheel body has a flywheel heat dissipation hole communicating with the flywheel cavity and the external environment, and the position of the heat dissipation space of the inner 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 magnetic control device has a convection hole penetrating through opposite sides of the inner magnetic control device in the thickness direction of the inner magnetic control device, and the convection hole is located between the device center hole and the edge of the inner magnetic control device from a top view perspective.

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

10. The flywheel assembly of claim 3, wherein said flange comprises a flange body, a laterally extending arm integrally extended from said flange body, and a longitudinally extending arm integrally extended from said flange body, said flange body is fixedly fitted on said assembly shaft, said laterally extending arm is fixedly fitted on said inner magnet control device, said longitudinally extending arm extends to said device center hole of said inner magnet control device, said coil unit is fixedly fitted on said longitudinally extending arm, such that said coil unit is configured to be fixed in position relative to said assembly shaft by said flange, wherein said flywheel body has an assembly ring, said assembly ring surrounds said assembly shaft and extends to said device center hole of said inner magnet control device, said power generation magnet is disposed on said assembly ring of flywheel body.

11. The flywheel assembly of claim 3, wherein said flange comprises a flange body and a laterally extending arm integrally extended from said flange body, said flange body is fixedly fitted on said assembly shaft, said laterally extending arm is fixedly fitted on said inner magnet control device, said coil unit is fixedly disposed on said inner magnet control device, such that said coil unit is configured to be fixed in position relative to said assembly shaft by said inner magnet control device, wherein said flywheel body has an assembly ring, said assembly ring surrounds said assembly shaft and extends to said device center hole of said inner magnet control device, said power generation magnet is disposed on said assembly ring of flywheel body.

12. The flywheel assembly of claim 4, wherein said inner magnet control device comprises a housing, a drive motor, a swing arm, a control magnet, a transmission unit, and a circuit board, said housing comprises a bottom case and a top cover, and has a housing space and a lateral opening communicated with said housing space, said top cover comprises a plate cover and a flange cover, said plate cover is mounted on said bottom case to form a part of said housing space between said plate cover and said bottom case, said flange cover is mounted on said bottom case to form another part of said housing space and said lateral opening between said plate cover and said bottom case, said drive motor is clamped between said bottom case and said flange cover, opposite sides of a pivot end of said swing arm are rotatably mounted on an edge of said bottom case and an edge of said flange cover respectively, such that said swing arm is rotatably held at said lateral opening of said housing, said control magnet is disposed on said swing arm, said transmission unit is disposed in said housing space of said housing, and said transmission unit connects a worm of said drive motor and a driven end of said swing arm, said circuit board is disposed in said housing space of said housing and below said plate cover, said drive motor and said coil unit are connected to said circuit board respectively.

13. The flywheel assembly of claim 12, wherein said flange cover has a plurality of radial reinforcing ribs and a plurality of circumferential reinforcing ribs, said radial reinforcing ribs respectively extend from an inner edge to an outer edge of said flange cover, and said circumferential reinforcing ribs respectively cross said radial reinforcing ribs.

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