Flywheel assembly with power generation function

Abstract

The invention discloses a flywheel assembly with a power generation function. The flywheel assembly comprises 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 is provided with a flywheel cavity and a flywheel center through hole communicated with the flywheel cavity, the conductor is fixedly arranged on the flywheel body and located in the flywheel cavity, and the assembly shaft penetrates through the device center through hole of the inner magnetic control device and the flywheel center through hole and can rotate relative to the assembly shaft. The flange is fixedly sleeved on one end part of the assembling 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, the power generation device comprises a coil unit and a magnet for power generation, the coil unit is kept still relative to the position of the assembling shaft, and the magnet for power generation is arranged on the inner magnetic control device. The magnet for power generation is arranged on the flywheel body, and the coil unit and the magnet for power generation are both located in the device center through hole.

Description

Technical Field

[0001] The present invention relates to the field of fitness equipment, and in particular to a flywheel assembly with a power generation function. Background Art

[0002] In the Chinese invention patent application with publication number CN110624207A, a transmission resistance control device is disclosed, which includes a frame, on which a control mechanism, a transmission mechanism and an adjustment mechanism are arranged. The control mechanism includes a first controller and a second controller 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 belt disk, the flywheel assembly is connected to the belt disk through a belt drive, and the belt disk is arranged to rotate relative to the frame. The adjustment mechanism is arranged on the flywheel assembly, the adjustment mechanism is electrically connected to the second controller, and the adjustment mechanism is configured to adjust the resistance of the flywheel assembly according to 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 on the fixed seat of the flywheel assembly via two fixing bolts and two fixing pins and is electrically connected to the control mechanism. The generator coil assembly and the magnet are magnetically coupled. During free riding, the user controls the button on the first controller to control the second controller through the first controller to adjust the current change of the generator coil assembly, which is used to adjust the magnetic coupling force between the generator coil assembly and the magnet, so as to adjust the resistance of the flywheel body. The transmission resistance of the flywheel body is transmitted to the reel through the belt by the transmission effect of the belt, thereby affecting the intensity of the user's pedaling during riding. The generator coil assembly and flywheel body of the existing transmission resistance control device both need to be installed on the fixed seat, and the generator coil assembly is located on one side of the flywheel body. That is, these accessories are not integrated, resulting in problems such as large size and high failure rate of the assembled transmission resistance control device. Summary of the Invention

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

[0004] One object of the present 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 center through-hole of the device of the internal magnetic control device, so that the power generation device does 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 be matched with different types of fitness equipment.

[0005] One object of the present invention is to provide a flywheel assembly with a power generation function, wherein the edge of the internal magnetic control device forms a heat dissipation space. 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 operating in a high-temperature environment, thereby improving the reliability and stability of the flywheel assembly.

[0006] One object of the present invention is to provide a flywheel assembly with a 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 due to power generation 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 operating in a high-temperature environment, thereby improving the reliability and stability of the flywheel assembly.

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

[0008] One object of the present invention is to provide a flywheel assembly with a power generation function, wherein the edge of the internal magnetic control device has a heat dissipation groove for exposing 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, so as to avoid the flywheel assembly from operating in a high-temperature environment, thereby 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 a power generation function, comprising: Assembly shaft; An internal magnetic control device, wherein the internal magnetic control device is fixedly mounted on one end of the assembly shaft; A flywheel, wherein the flywheel comprises a flywheel body and a conductor, the flywheel body having a flywheel cavity and a flywheel 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 the assembly shaft passing through the flywheel central through-hole of the flywheel body, and the flywheel being rotatable relative to the assembly shaft, wherein the internal magnetic control device 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 is constructed to remain stationary relative to the assembly shaft, and the power generation magnet is arranged on the flywheel body, and in the circumferential direction, the position of the coil unit and the position of the power generation magnet are relative.

[0010] According to one embodiment of the present invention, the internal magnetic control device has a device center through-hole, one end of the assembly shaft passes through the device center through-hole of the internal magnetic control device, and the coil unit and the power generation magnet are both located in the device center through-hole of the internal magnetic control device.

[0011] According to one embodiment of the present invention, the flywheel assembly includes a flange, which is fixedly mounted on one end of the assembly shaft and fixedly assembled on the internal magnetic control device. The flange and the assembly shaft cooperate with each other to suspend the internal magnetic control device in the flywheel cavity of the flywheel body.

[0012] According to one embodiment of the present invention, the internal magnetic control device is locked to one end of the assembly shaft.

[0013] According to one embodiment of the present invention, the internal magnetron device has a heat dissipation space, and in the thickness direction of the internal magnetron device, the heat dissipation space runs through two opposite sides of the internal magnetron device.

[0014] According to an embodiment of the present invention, the heat dissipation space of the internal magnetron device is located at an edge of the internal magnetron device.

[0015] According to one embodiment of the present invention, the flywheel body has a flywheel heat dissipation hole, which 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.

[0016] According to one embodiment of the present invention, the internal magnetic control device has a convection perforation. In the thickness direction of the internal magnetic control device, the convection perforation passes through opposite sides of the internal magnetic control device. From a top view, the convection perforation is located between the central perforation of the device and the edge of the internal magnetic control device.

[0017] According to one embodiment of the present invention, the inner magnetron device has a heat dissipation groove formed by thinning a portion of an edge of the inner magnetron device. In the circumferential direction, a portion of the conductor is exposed to the heat dissipation groove of the inner magnetron device.

[0018] 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 mounted on the assembly shaft, the transverse extension arm is fixedly mounted on the internal magnetic control device, the longitudinal extension arm extends to the device center through-hole of the internal magnetic control device, the coil unit is fixedly mounted on the longitudinal extension arm, so that the flange enables the coil unit to be constructed to remain stationary relative to the assembly shaft, wherein the flywheel body has an assembly ring, which surrounds the assembly shaft and extends to the device center through-hole of the internal magnetic control device, and the power generation magnet is arranged on the assembly ring of the flywheel body.

[0019] 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 mounted on the assembly shaft, the transverse extension arm is fixedly assembled on the internal magnetic control device, the coil unit is fixedly arranged on the internal magnetic control device, so that the internal magnetic control device enables the coil unit to be constructed to remain stationary relative to the assembly shaft, wherein the flywheel body has an assembly ring, which surrounds the assembly shaft and extends to the center through-hole of the device center of the internal magnetic control device, and the power generation magnet is arranged on the assembly ring of the flywheel body.

[0020] 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 has a shell space and a side opening connected to the shell space. The top cover includes a plate cover and a flange cover. The plate cover is installed on the bottom shell to form a part of the shell space between the plate cover and the bottom cover. The flange cover is installed on the bottom shell to form another part of the shell space and the side opening between the plate cover and the bottom shell. The drive motor is clamped on the bottom shell. The cam is secured to the bottom of the housing and the flange cover, and the cam is secured to the bottom of the housing and the flange cover. The cam is secured to the bottom of the housing and the flange cover, and the cam is secured to the bottom of the housing and the flange cover.

[0021] 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, wherein the radial reinforcing ribs extend from the inner edge to the outer edge of the flange cover respectively, and the circumferential reinforcing ribs intersect with the radial reinforcing ribs respectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional schematic diagram from one perspective of a flywheel assembly according to the first preferred embodiment of the present invention.

[0023] Figure 2 It is a three-dimensional schematic diagram of the flywheel assembly from another perspective according to the above preferred embodiment of the present invention.

[0024] Figure 3 It is a schematic exploded view of the flywheel assembly according to the preferred embodiment of the present invention from one perspective.

[0025] Figure 4 It is a schematic exploded view of the flywheel assembly according to the preferred embodiment of the present invention from another perspective.

[0026] Figure 5 It is a cross-sectional schematic diagram of the flywheel assembly according to the above preferred embodiment of the present invention.

[0027] Figure 6 It is a schematic exploded view from one perspective of an internal magnetic control device of the flywheel assembly according to the above preferred embodiment of the present invention.

[0028] Figure 7 1 is a schematic exploded view from another perspective of the internal magnetic control device of the flywheel assembly according to the preferred embodiment of the present invention.

[0029] Figure 8 It is a partial schematic diagram of the flywheel assembly according to the above preferred embodiment of the present invention.

[0030] Figure 9 It is a cross-sectional schematic diagram of a modified example of the flywheel assembly according to the above preferred embodiment of the present invention.

[0031] Figure 10 It is a cross-sectional schematic diagram of another modified example of the flywheel assembly according to the above preferred embodiment of the present invention.

[0032] Figure 11 It is a cross-sectional schematic diagram of another modified example of the flywheel assembly according to the above preferred embodiment of the present invention.

[0033] Figure 12 It is a three-dimensional schematic diagram from one perspective of a flywheel assembly according to the second preferred embodiment of the present invention.

[0034] Figure 13 It is a three-dimensional schematic diagram of the flywheel assembly from another perspective according to the above preferred embodiment of the present invention.

[0035] Figure 14 1 is a schematic top view of the flywheel assembly according to the preferred embodiment of the present invention.

[0036] Figure 15 It is a cross-sectional schematic diagram of the flywheel assembly according to the above preferred embodiment of the present invention.

[0037] Figure 16 It is a three-dimensional schematic diagram from one perspective of a flywheel assembly according to the third preferred embodiment of the present invention.

[0038] Figure 17 It is a three-dimensional schematic diagram of the flywheel assembly from another perspective according to the above preferred embodiment of the present invention.

[0039] Figure 18 It is a schematic exploded view of the flywheel assembly according to the preferred embodiment of the present invention from one perspective.

[0040] Figure 19 It is a schematic exploded view of the flywheel assembly according to the preferred embodiment of the present invention from another perspective.

[0041] Figure 20 It is a cross-sectional schematic diagram of the flywheel assembly according to the above preferred embodiment of the present invention.

[0042] Figure 21 It is a three-dimensional schematic diagram from one perspective of an internal magnetic control device of the flywheel assembly according to the above preferred embodiment of the present invention.

[0043] Figure 22 It is a three-dimensional schematic diagram from one perspective of the internal magnetic control device of the flywheel assembly according to the above preferred embodiment of the present invention.

[0044] Figure 23 It is a schematic exploded view from one perspective of the internal magnetic control device of the flywheel assembly according to the above preferred embodiment of the present invention.

[0045] Figure 24 1 is a schematic exploded view from another perspective of the internal magnetic control device of the flywheel assembly according to the preferred embodiment of the present invention.

[0046] Figure 25 1 is a schematic exploded view from another perspective of the internal magnetic control device of the flywheel assembly according to the preferred embodiment of the present invention. DETAILED DESCRIPTION

[0047] Before describing in detail any embodiment of the present invention, it should be understood that the present invention is not limited in its application to the construction and arrangement details of the components set forth in the following description or illustrated in the following figures. The present invention is capable of other embodiments and can be practiced or carried out in various ways. In addition, it should be understood that the words and terms used herein are for descriptive purposes and should not be considered restrictive. The use of "including" or "having" and their variations herein is intended to cover the items and their equivalents set forth below and additional items. Unless otherwise specified or limited, the terms "mounted", "connected", "supported" and "coupled" and their variations are used broadly and cover direct mounting and indirect mounting, connection, support and coupling. In addition, "connected" and "coupled" are not limited to physical or mechanical connections or couplings.

[0048] Furthermore, on the first hand, in the disclosure of the present invention, the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like to indicate orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore the above terms cannot be understood as limitations on the present invention; on the second hand, the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" cannot be understood as a limitation on the quantity.

[0049] Reference is made to the accompanying drawings of the present invention. Figures 1 to 8 The following description will disclose and illustrate a flywheel assembly with a power generation function according to a first preferred embodiment of the present invention. The flywheel assembly is used in conjunction with fitness equipment. 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.

[0050] Reference Attachment 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 connected to the flywheel cavity 111. The conductor 12 is fixedly arranged on the flywheel body 11, and the conductor 12 is located in the flywheel cavity 111 of the flywheel body 11.

[0051] Specifically, in this specific example of the flywheel assembly of the present invention, the flywheel body 11 includes a wheel disc 113 and a wheel ring 114 integrally extending from the edge of the wheel disc 113. The flywheel cavity 111 of the flywheel body 11 is formed between the wheel disc 113 and the wheel ring 114. The flywheel center through-hole 112 of the flywheel body 11 is formed in the wheel disc 113. The conductor 12 is fixedly disposed on the inner wall of the wheel ring 114, so that the conductor 12 is fixedly disposed on the flywheel body 11 and is located in the flywheel cavity 111 of the flywheel body 11.

[0052] It is worth mentioning that the specific manner of fixing the conductor 12 to the inner wall of the wheel ring 114 is not limited in the flywheel assembly of the present invention. Figures 1 to 8 In this particular example of the flywheel assembly shown, the conductor 12 is ring-shaped, and the outer diameter of the conductor 12 is consistent with the inner diameter of the ring 114. Based on the friction between the outer wall of the conductor 12 and the inner wall of the ring 114, the conductor 12 can be fixedly arranged on the ring 114. Preferably, in some embodiments of the flywheel assembly of the present invention, the conductor 12 can be an aluminum ring.

[0053] Continue to refer to the attached Figures 3 to 5 The inner magnetic control device 20 has a central through-hole 201, wherein the assembly shaft 30 passes through the central through-hole 201 of the inner magnetic control device 20 and the flywheel central through-hole 112 of the flywheel body 11, and the flywheel 10 is rotatable relative to the assembly shaft 30. The flange 40 is fixedly mounted on one end of the assembly shaft 30 and is fixedly assembled to the inner magnetic control device 20. The flange 40 and the assembly shaft 30 cooperate to 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 flux lines of the inner magnetic control device 20, generating eddy currents, so that the flywheel assembly provides magnetic resistance. That is, the flywheel 10 is rotatably mounted on one end of the assembly shaft 30, the internal magnetic control device 20 is fixedly mounted on the other end of the assembly shaft 30, and the internal magnetic control device 20 is suspended in the flywheel cavity 111 of the flywheel body 11 of the flywheel 10.

[0054] That is, the internal 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 internal magnetic control device 20. Therefore, when the flywheel 10 is driven to rotate relative to the internal magnetic control device 20, the conductor 12 can cut the magnetic flux lines of the internal magnetic control device 20 and generate eddy currents, so that the flywheel assembly provides magnetic resistance to help the user exercise using the fitness equipment.

[0055] In the attached Figures 1 to 8 In this specific example of the flywheel assembly of the present invention shown, the flywheel assembly includes a plurality of bearings 60, the inner sides 61 of the bearings 60 are fixedly mounted on the assembly shaft 30 at different positions of the assembly shaft 30, and the outer sides 62 of the bearings 60 are fixedly arranged on the flywheel body 11 at different positions of the flywheel body 11, so that the bearings 60 rotatably mount the flywheel 10 on the assembly shaft 30, so that the flywheel 10 is rotatable relative to the assembly shaft 30.

[0056] Furthermore, the flywheel assembly includes a retaining spring 70, which is clamped onto the assembly shaft 30. When viewed from above, the retaining spring 70 and the inner side 61 of the bearing 60 have an overlapping portion, so that the retaining spring 70 prevents the bearing 60 from moving along the extension direction of the assembly shaft 30. Specifically, the inner side of the retaining spring 70 is clamped into the retaining groove of the assembly shaft 30, and the outer side abuts against the inner side 61 of the bearing 60, thereby preventing the bearing 60 from moving along the extension direction of the assembly shaft 30.

[0057] Specifically, refer to the attached 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 mounted on the housing 21. The swing arm 23 has a pivot end 231 and a driven end 232 opposite to each other. The pivot end 231 of the swing arm 23 is rotatably mounted on the edge of the housing 21. The control magnet 24 is disposed on the outside of the swing arm 23 and is used to provide a magnetic field. The transmission unit 25 connects the worm 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 so that the control magnet 24 and the conductor 12 face each other.

[0058] When the worm 221 of the drive motor 22 rotates in one direction, the transmission unit 25 is used to transmit power to the swing arm 23, causing the swing arm 23 to swing the control magnet 24 in a direction closer to 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 221 of the drive motor 22 rotates in the other direction, the transmission unit 25 is used to transmit power to the swing arm 23, causing the swing arm 23 to swing the control magnet 24 in a direction 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 reduced.

[0059] That is to say, 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 to adjust the magnetic resistance provided by the flywheel assembly.

[0060] Furthermore, 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, the second gear 252, the third gear 253 and the sector gear 254 are all rotatably arranged on the housing 21, and the first gear 251 is engaged with the worm 221 of the drive motor 22, the second gear 252 is engaged with the first gear 251, the third gear 253 is engaged with the second gear 252, and the sector gear 254 is engaged with the third gear 221. 53. The 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. In this way, when the worm 221 of the drive motor 22 rotates, the worm 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, and 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.

[0061] Preferably, refer to the attached 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 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 will be 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.

[0062] Continue to refer to the attached Figures 3 to 7 The shell 21 includes a bottom shell 211 and a top cover 212, and the shell 21 has a shell space 213 and a side opening 214. The top cover 212 is installed on the bottom shell 211 to form the shell space 213 and the side opening 214 of the shell 21 between the bottom shell 211 and the top cover 212, wherein the drive motor 22, the swing arm 23 and the transmission unit 25 are respectively arranged in the shell space 213 of the shell 21, and the swing arm 23 is adjacent to the side opening 214 of the shell 21, wherein the side opening 214 of the shell 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 shell space 213 of the outer shell 21, and 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 at the edge of the outer shell 21 and adjacent to the side opening 214, and the opposite sides of the first gear 251, the second gear 252, the third gear 253 and the fan 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 fan gear 254 are reliably disposed in the shell space 213 of the outer shell 21.

[0063] It is worth mentioning that the installation method of the bottom shell 211 and the top cover 212 is not limited in the flywheel assembly of the present invention. Figures 1 to 8 In the particular example of the flywheel assembly shown, the bottom housing 211 and the top cover 212 may be mounted to each other by a set of screws.

[0064] Reference Attachment 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 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, so that the device center through hole 201 of the internal magnetic control device 20 is formed by the bottom shell center hole 2110 of the bottom shell 211 and the top cover center hole 2120 of the top cover 212.

[0065] Reference Attachment Figures 6 to 8 The internal magnetic control device 20 includes a circuit board 27. The circuit board 27 is disposed in the housing 21 and located in the shell space 213 of the housing 21, so that the circuit board 27 is not visually visible. 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. In other words, the circuit board 27 is integrated with a control function. For example, the circuit board 27 can be mounted with a logic chip or provided with a logic circuit, 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 to the bottom shell 211 so that the circuit board 27 is reliably disposed in the shell space 213 of the housing 21.

[0066] Furthermore, the bottom shell 211 has an outer receiving groove 2111, a rotating shaft through-hole 2112 and a threading hole 2113. The rotating shaft through-hole 2112 and the threading hole 2113 of the bottom shell 211 respectively connect the outer receiving groove 2111 and the shell space 213 of the outer shell 21, 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 installed on the sector gear 254 after passing through the rotating shaft through-hole 2112 of the bottom shell 211, wherein 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 shell space 213 of the outer shell 21 after passing through the threading hole 2113 of the bottom shell 211, and the wire 28 is connected to the circuit board 27. It is understandable 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 .

[0067] Preferably, the bottom shell 211 has a bottom shell outer limiting protrusion 2114 and a bottom shell inner limiting protrusion 2115, the bottom shell outer limiting protrusion 2114 and the bottom shell inner limiting protrusion 2115 respectively protrude toward the shell space 213 of the outer shell 21, and the top cover 212 has a top cover outer limiting protrusion 2121 and a top cover inner limiting protrusion 2122, the top cover outer limiting protrusion 2121 and the top cover inner limiting protrusion 2122 respectively protrude toward the shell space 213 of the outer shell 21, wherein the bottom shell outer limiting protrusion 2114 and the bottom shell inner limiting protrusion 2115 respectively protrude toward the shell space 213 of the outer shell 21. The position of the positioning protrusion 2114 corresponds to the position of the outer limiting protrusion 2121 of the top cover 212 and is located on the outer side of the swing arm 23, and is used to limit the maximum distance that the swing arm 23 swings outward to prevent the control magnet 24 from colliding with the conductor 12. The position of the inner limiting protrusion 2115 of the bottom shell 211 corresponds to the position of the inner limiting protrusion 2122 of the top cover 212 and is located on the inner side of the swing arm 23, and is used to limit the maximum distance that the swing arm 23 swings inward to prevent the swing arm 23 from colliding with the circuit board 27.

[0068] Reference Attachment 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 mounted on the flywheel body 11 so that it rotates with the rotation of the flywheel 10. In the circumferential direction, the coil unit 51 and the power generation magnet 52 are positioned opposite each other, and both are located within 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, generating current, thereby enabling the flywheel assembly to generate electricity. It is understood that the circumferential direction refers to the direction of rotation of the flywheel 10.

[0069] Reference Attachment Figure 3 In the flywheel assembly of the present invention, the coil unit 51 of the power generation device 50 and the power generation magnet 52 are both located in the device center through-hole 201 of the internal magnetic control device 20, so that the power generation device 50 does not need to occupy additional space, thereby facilitating reduction in the volume of the flywheel assembly and making the appearance of the flywheel assembly regular, so that the flywheel assembly can be matched with different types of fitness equipment.

[0070] Continue to refer to the attached 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. Each winding tooth 5111 is wound with one coil 512. The coil support 511 is fixedly mounted on the flange 40. The flange 40 enables the coil unit 51 to be configured to remain stationary relative to the assembly axis 30. Preferably, the coil 512 is connected to the circuit board 27. In this way, the electric energy generated by the power generation device 50 can be used to drive the drive motor 22. It is understandable 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 position of the coil unit 51 and the circuit board 27 remains stationary, which facilitates the connection of 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.

[0071] Specifically, in the attached Figures 1 to 8 In the specific example of the flywheel assembly of the present invention shown, the flange 40 includes a flange body 41, at least one transverse extension arm 42 and a longitudinal extension arm 43, wherein the transverse extension arm 42 and the longitudinal extension arm 43 extend integrally from the flange body 41 in different directions, respectively, wherein the flange body 41 is fixedly mounted on the assembly shaft 30, and the transverse extension arm 42 is fixedly mounted on the internal magnetic control device 20. For example, screws can be used to lock the transverse extension arm 42 and the internal magnetic control device 20 so that the The transverse extension arm 42 is fixedly mounted on the inner magnetic control device 20, and the longitudinal extension arm 43 extends to the device center through-hole 201 of the inner magnetic control device 20. The coil support 511 of the coil unit 51 is fixedly mounted on the longitudinal extension arm 43 of the flange 40. In this way, the longitudinal extension arm 43 of the flange 40 enables the coil unit 51 to be fixedly positioned relative to the assembly axis 30 and is used to set the coil unit 51 in the device center through-hole 201 of the inner magnetic control device 20.

[0072] The flywheel body 11 further includes an assembly ring 115 extending from the wheel disc 113 to the central through-hole 201 of the inner magnetic control device 20 and surrounding the assembly axis 30. The power generation magnet 52 is mounted on the assembly ring 115 of the flywheel body 11. The assembly ring 115 of the flywheel body 11 is used to position the power generation magnet 52 in the central through-hole 201 of the inner magnetic control device 20, such that the position of the power generation magnet 52 corresponds to the position of the coil unit 51 in the circumferential direction. Thus, 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, causing the power generation device 50 to generate electricity. Preferably, the assembly ring 1151 has an annular groove 1151, and the power generation magnet 52 is located in the annular groove 1151 of the assembly ring 115.

[0073] Preferably, in this specific example of the flywheel assembly of the present invention, there are a plurality of power generation magnets 52 , and these power generation magnets 52 are annularly arranged on the assembly ring 115 of the flywheel body 11 .

[0074] It is understood that when the flywheel 10 is driven to rotate relative to the internal magnetic control device 20, causing the conductor 12 to cut the magnetic flux lines of the internal magnetic control device 20 and generate eddy currents, the conductor 12 generates a large amount of heat. In the flywheel assembly of the present invention, to achieve rapid heat dissipation of the flywheel assembly, the internal magnetic control device 20 is provided with at least one heat dissipation space 202 at its edge. The heat dissipation space 202 extends through opposite sides of the internal magnetic control device 20 in the thickness direction of the internal magnetic control device 20. A portion of the conductor 12 is exposed to the heat dissipation space 202 of the internal magnetic control device 20. As a result, the heat generated by the conductor 12 when cutting the magnetic flux lines of the internal magnetic control device 20 can be quickly radiated to the external environment through the heat dissipation space 202 of the internal magnetic control device 20, thereby achieving rapid heat dissipation of the flywheel assembly.

[0075] Reference Attachment Figure 3 and Figure 4 In this specific example of the flywheel assembly of the present invention, the inner magnetic control device 20 is recessed from its edge toward the central through-hole 201 of the device, forming the heat dissipation space 202. This exposes a portion of the conductor 12 to the heat dissipation space 202 of the inner magnetic control device 20. Heat generated by the conductor 12 when cutting the magnetic flux lines of the inner magnetic control device 20 can be rapidly radiated to the external environment through the heat dissipation space 202 of the inner magnetic control device 20, thereby achieving rapid heat dissipation of the flywheel assembly. Preferably, the heat dissipation space 202 of the inner magnetic control device 20 is fan-shaped.

[0076] Specifically, the edge of the bottom shell 211 has a fan-shaped bottom shell notch 2116, and the edge of the top cover 212 has a fan-shaped top cover notch 2123. The position of the bottom shell notch 2116 of the bottom shell 211 corresponds to the position of the top cover notch 2123 of the top cover 212, 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 shell 21 is connected to the heat dissipation space 202 of the internal magnetic control device 20. Thus, when the flywheel 10 is driven to rotate relative to the internal magnetic control device 20, heat generated by the conductor 12 can be rapidly radiated through the housing space 213 of the outer shell 21 to the heat dissipation space 202 of the internal magnetic control 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 shell 21 forms a conductive opening 215 between the bottom shell 211 and the top cover 212, which connects the housing space 213 and the heat dissipation space 202.

[0077] Continue to refer to the attached Figures 1 to 5 、 Figure 8 The flywheel disc 113 of the flywheel body 11 has at least one flywheel heat dissipation hole 1131, which connects the flywheel cavity 111 of the flywheel body 11 with 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 disc 113 of the flywheel body 11. In this way, 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 disc 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 number of the flywheel heat dissipation holes 1131 of the disc 113 is multiple, and these flywheel heat dissipation holes 1131 are arranged in an annular pattern around the assembly axis 30.

[0078] It is understandable that when the flywheel 10 is driven to rotate relative to the internal magnetic control device 20 to cause 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 the present invention, 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. In order to prevent the flange 40 from covering the heat dissipation space 202 formed by the central through-hole 201 of the internal magnetic control device 20, the number of the transverse 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 number of the transverse extension arms 42 of the flange 40 is three. The three transverse extension arms 42 are spaced apart from each other to form a notch 44 of the flange 40 between any two of the transverse extension arms 42. Each transverse extension arm 42 of the flange 40 can be screwed to the internal magnetic control device 20. The position of the notch 44 of the flange 40 is opposite to the position of the device center through-hole 201 of the internal magnetic control device 20, so that the heat dissipation space 202 formed by the device center through-hole 201 of the internal magnetic control 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 device center through-hole 201 of the internal magnetic control device 20 and the notch 44 of the flange 40, thereby achieving rapid heat dissipation of the flywheel assembly.

[0079] Attachment Figure 9 A modified example of the flywheel assembly of the present invention is shown. Figures 1 to 8 The flywheel assembly shown differs in that Figure 9 In this specific example of the flywheel assembly of the present invention shown, the coil unit 51 is fixedly arranged on the internal magnetic control device 20, so that the internal magnetic control device 20 can make the coil unit 51 be constructed to remain stationary relative to the assembly axis 30. 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, and the top cover ring 2124 extends toward the bottom shell center hole 2110 of the bottom shell 211. The coil support 511 of the coil unit 51 is fixedly mounted on the top cover ring 2124 of the top cover 212, so that the coil unit 51 is fixedly arranged on the internal magnetic control device 20, so that the coil unit 51 is constructed to remain stationary relative to the assembly axis 30 by the internal magnetic control device 20. It can be understood that in the attached Figure 9In the example of the flywheel assembly shown, the power generation magnet 52 surrounds the outside of the coil unit 51 .

[0080] Optionally, in the attached Figure 10 In this specific example of the flywheel assembly shown, the coil unit 51 can also be fixedly arranged on the bottom shell 211 of the outer shell 21 of the internal magnetic control device 20, so that the internal magnetic control device 20 can construct the coil unit 51 to remain stationary relative to the assembly shaft 30, wherein the coil unit 51 is surrounded by the outside of the power generation magnet 52.

[0081] Attachment Figure 11 A modified example of the flywheel assembly of the present invention is shown. Figures 1 to 8 The flywheel assembly shown differs in that Figure 11 In the illustrated embodiment of the flywheel assembly of the present invention, the coil unit 51 may be fixedly mounted on the mounting shaft 30 , so that the coil unit 51 is configured to remain stationary relative to the mounting shaft 30 .

[0082] Attachment Figures 12 to 15 The flywheel assembly according to the second preferred embodiment of the present invention is shown, and the attached Figures 1 to 8 The flywheel assembly of the first preferred embodiment of the present invention is different in that Figures 12 to 15 In this specific example of the flywheel assembly, the inner magnetic control device 20 has at least one convection perforation 203. The convection perforations 203 extend through opposite sides of the inner magnetic control device 20 in the thickness direction of the inner magnetic control device 20. From a top view, the convection perforations 203 are located between the device's central perforation 201 and the edge of the inner magnetic control device 20. By providing the convection perforations 203 in the inner magnetic control device 20, when the flywheel 10 is driven to generate heat relative to the inner magnetic control device 20, heat generated by the conductor 12 can be radiated to the external environment through the convection perforations 203 in the inner magnetic control device 20, thereby increasing the heat dissipation rate of the flywheel assembly. Furthermore, the convection perforations 203 in the inner magnetic control device 20 prevent heat generated by the conductor 12 from radiating toward the generator 50, thereby preventing the temperature of the operating environment of the generator 50 from increasing due to the heat generated by the conductor 12, thereby improving the reliability of the generator 50.

[0083] Specifically, the bottom shell 211 has a bottom shell convection hole 2117, which connects the shell space 213 of the outer shell 21 and 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 and the external environment. The position of the bottom shell convection hole 2117 of the bottom shell 211 corresponds to the position of the top cover convection hole 2124 of the top cover 212, so as to form the convection through-hole 203 that passes through the opposite sides of the internal magnetic control device 20.

[0084] Preferably, the position of the convection perforations 203 of the internal magnetic control device 20 corresponds to the rotation path of the flywheel heat dissipation holes 1131 of the wheel 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, convection can be achieved in the spaces on opposite sides of the flywheel assembly through the flywheel heat dissipation holes 1131 of the wheel disc 113 of the flywheel body 11 and the convection perforations 203 of the internal magnetic control device 20, thereby achieving rapid heat dissipation of the flywheel assembly.

[0085] Reference Attachment Figure 12 、 Figure 14 and Figure 15 The inner magnetic control device 20 further has a heat dissipation slot 204. The heat dissipation slot 204 is formed by thinning a portion of the edge of the inner magnetic control device 20. In the circumferential direction, a portion of the conductor 12 is exposed to the heat dissipation slot 204 of the inner magnetic control device 20. In this way, when the flywheel 10 is driven to rotate relative to the inner magnetic control device 20 and the conductor 12 cuts the magnetic flux lines of the inner magnetic control device 20 to generate eddy currents, the heat generated by the conductor 12 can be quickly radiated to the external environment, thereby achieving rapid heat dissipation of the flywheel assembly.

[0086] Attachment Figures 16 to 25 The flywheel assembly according to the third preferred embodiment of the present invention is shown. The flywheel assembly includes a flywheel 10A, an internal magnetic control device 20A, a mounting shaft 30A and a power generation device 50A.

[0087] 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 connected to the flywheel cavity 111A. The conductor 12A is fixedly arranged on the flywheel body 11A, and the conductor 12A is located in the flywheel cavity 111A of the flywheel body 11A.

[0088] Specifically, in this specific example of the flywheel assembly of the present invention, 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. The flywheel center through-hole 112A of the flywheel body 11A is formed in the disc 113A. The conductor 12A is fixedly mounted on the inner wall of the ring 114A, so that the conductor 12A is fixedly mounted on the flywheel body 11A and located in the flywheel cavity 111A of the flywheel body 11A.

[0089] It is worth mentioning that the specific manner of fixing the conductor 12A to the inner wall of the ring 114A is not limited in the flywheel assembly of the present invention. Figures 16 to 25 In this particular example of the flywheel assembly, the conductor 12A is annular, and the outer diameter of the conductor 12A is consistent with the inner diameter of the ring 114A. Based on the friction between the outer wall of the conductor 12A and the inner wall of the ring 114A, the conductor 12A can be fixedly mounted on the ring 114A. Preferably, in some embodiments of the flywheel assembly of the present invention, the conductor 12A can be an aluminum ring.

[0090] The flywheel 10A is rotatably mounted on one end of the assembly shaft 30A, and the inner magnetic control device 20A is fixedly mounted on the other end of the assembly shaft 30A. 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 flux lines of the inner magnetic control device 20A, generating eddy currents, thereby causing the flywheel assembly to provide magnetic resistance. In other words, the inner magnetic control device 20A has a magnetic field, and at least a portion of the conductor 12A is located within the magnetic field of the inner magnetic control device 20A. Therefore, when the flywheel 10A is driven to rotate relative to the inner magnetic control device 20A, the conductor 12A can cut the magnetic flux lines of the inner magnetic control device 20A, generating eddy currents, thereby causing the flywheel assembly to provide magnetic resistance.

[0091] Specifically, the inner magnetic control device 20A has a central through-hole 201A and a threaded hole 206A connected to the central through-hole 201A. After one end of the assembly shaft 30A passes through the central through-hole 201A of the inner magnetic control device 20A, the assembly shaft 30A closes the inner opening of the threaded hole 206A of the inner magnetic control device 20A. The flywheel assembly includes a threaded pin 80A, which is threaded into the threaded hole 206A of the inner magnetic control device 20A. The inner end of the threaded pin 80A abuts against the assembly shaft 30A, so that the inner magnetic control device 20A is fixedly mounted on the assembly shaft 30A. Preferably, the device center through-hole 201A of the inner magnetic control device 20A is a non-circular through-hole, and the portion of the assembly shaft 30A retained in the device center through-hole 201A of the inner magnetic control device 20A is also non-circular. In addition, the shape and size of the portion of the assembly shaft 30A retained in the device center through-hole 201A of the inner magnetic control device 20A are consistent with the shape and size of the device center 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 device center 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.

[0092] That is to say, in the attached Figures 16 to 25 In this specific example of the flywheel assembly of the present invention, the flywheel assembly does not need to rely on a flange to achieve the fixation of the internal magnetic control device 20A and the assembly shaft 30A. Instead, one end of the assembly shaft 30A is directly fixed to the internal magnetic control device 20A. In this way, it is not only beneficial to reduce the cost of the flywheel assembly, but also to improve the assembly efficiency of the flywheel assembly.

[0093] In the attached Figures 16 to 25 In this specific example of the flywheel assembly of the present invention shown, the flywheel assembly includes a plurality of bearings 60A, the inner sides 61A of the bearings 60A are fixedly mounted on the assembly shaft 30A at different positions of the assembly shaft 30A, and the outer sides 62A of the bearings 60A are fixedly arranged on the flywheel body 11A at different positions of the flywheel body 11A, so that the bearings 60A rotatably mount the flywheel 10A on the assembly shaft 30A so that the flywheel 10A is rotatable relative to the assembly shaft 30A.

[0094] Furthermore, the flywheel assembly includes a retaining spring 70A, which is secured to the assembly shaft 30A. When viewed from above, the retaining spring 70A and the inner side 61A of the bearing 60A overlap, thereby preventing the bearing 60A from moving along the extension direction of the assembly shaft 30A. Specifically, the inner side of the retaining spring 70A is engaged with a retaining groove in the assembly shaft 30A, while the outer side abuts against the inner side 61A of the bearing 60A, thereby preventing the bearing 60A from moving along the extension direction of the assembly shaft 30A.

[0095] 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 mounted in the housing 21A. The swing arm 23A has a pivot end 231A and a driven end 232A, with the pivot end 231A of the swing arm 23A being rotatably mounted on an edge of the housing 21A. The control magnet 24A is disposed outside the swing arm 23A and is configured to provide a magnetic field. The transmission unit 25A connects the worm 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 magnet 24A and the conductor 12A facing each other.

[0096] When the worm 221A of the drive motor 22A rotates in one direction, the transmission unit 25A is used to transmit power to the swing arm 23A, causing the swing arm 23A to swing the control magnet 24A in a direction closer to 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 221A of the drive motor 22A rotates in the other direction, the transmission unit 25A is used to transmit power to the swing arm 23A, causing the swing arm 23A to swing the control magnet 24A in a direction 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 reduced.

[0097] That is to say, by controlling the rotation direction of the worm 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 to adjust the magnetic resistance provided by the flywheel assembly.

[0098] Furthermore, 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 disposed on the housing 21A, and the first gear 251A is engaged with the worm 221A of the drive motor 22A, the second gear 252A is engaged with the first gear 251A, the third gear 253A is engaged with the second gear 252A, and the sector gear 254A is engaged with the third gear 221A. 53A, the 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. In this way, 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, and 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.

[0099] Preferably, refer to the attached Figure 4 、 Figure 6 and Figure 7 The 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 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 of the potentiometer 26A. It will be appreciated that the resistance 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 of the potentiometer 26A, thereby effectively controlling the magnetic resistance provided by the flywheel assembly.

[0100] The shell 21A includes a bottom shell 211A and a top cover 212A, and the shell 21A has a shell space 213A and a side opening 214A, the top cover 212A is installed on the bottom shell 211A to form the shell space 213A and the side opening 214A of the shell between the bottom shell 211A and the top cover 212A, wherein the drive motor 22A, the swing arm 23A and the transmission unit 25A are respectively arranged in the shell space 213A of the shell 21A, and the swing arm 23A is adjacent to the side opening 214A of the shell 21A, wherein the side opening 214A of the shell 21A faces the conductor 12A.

[0101] 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 shell space 213A of the outer shell 21A, and 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 at the edge of the outer shell 21A and 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 fan 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 fan gear 254A are reliably disposed in the shell space 213A of the outer shell 21A.

[0102] The bottom shell 211A has a bottom shell center hole 2110A, and 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 internal 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.

[0103] The internal magnetic control device 20A includes a circuit board 27A, which is disposed in the housing 21A and located in the housing space 213A of the housing 21A so that the circuit board 27A is not visually visible, wherein the drive motor 22A and the potentiometer 26A are respectively connected to the circuit board 27A, and the circuit board 27A can control the working state of the drive motor 22A according to the resistance signal fed back by the potentiometer 26A. In other words, the circuit board 27A is integrated with a control function. For example, the circuit board 27A can be mounted with a logic chip or provided with a logic circuit so that the circuit board 27A can control the working state of the drive motor 22A according to the resistance signal fed back by the potentiometer 26A. Preferably, the circuit board 27A is fixed to the bottom shell 211A by screws so that the circuit board 27A is reliably disposed in the housing space 213A of the housing 21A.

[0104] Furthermore, the top cover 212A includes a plate cover 2125A and a flange cover 2126A, and the plate cover 2125A and the flange cover 2126A are respectively and independently installed on the bottom shell 211A, and the outer 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 present invention, 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, and the plate cover 2125A and the flange cover 2126A are independent of each other, that is, the installation and disassembly of the plate cover 2125A does not affect the installation relationship between the flange cover 2126A and the bottom shell 211A.

[0105] The opposite sides of the pivot end 231A of the swing arm 23A are rotatably mounted on the bottom shell 211A and the flange cover 2126A, so that the swing arm 23A is swingably set on the edge of the outer shell 21A and adjacent to the side opening 214A of the outer shell 21A, and the opposite sides of the first gear 251A, the second gear 252A, the third gear 253A and the fan gear 254A of the transmission unit 25A are rotatably mounted on 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 fan gear 254A are reliably set in the shell 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, making it easier to inspect and repair the circuit board 27A. Furthermore, after the plate cover 2125A is removed, the flange cover 2126A remains mounted on the bottom shell 211A, thereby maintaining the mounting relationship between the housing 21A, the drive motor 22A, the swing arm 23A, the control magnet 24A, and the transmission unit 25A. The plate cover 2125A has at least one terminal through-hole 21251A. The position of the connection 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 wire of the external device can be inserted into the connection terminal 271A of the circuit board 27A through the terminal through-hole 21251A of the plate cover 2125A.

[0106] 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 and rotates relative to the internal magnetic control device 20A, the flange cover 2126A is the direct force-bearing part of the internal magnetic control device 20A, and the force is applied at a single point. In order to improve the deformation resistance of the bottom shell 211A and the flange cover 2126A, the flange cover 2126A is attached. Figures 16 to 25In this specific example of the flywheel assembly of the present invention, on the one hand, the bottom shell 211A and the flange cover 2126A are made of a composite material of PA66 reinforced with 30% glass fiber, and on the other hand, the flange cover 2126A has a plurality of radial reinforcing ribs 21261A and a plurality of circumferential reinforcing ribs 21262A, and these radial reinforcing ribs 21261A extend from the inner edge to the outer edge of the flange cover 2126A respectively, and these circumferential reinforcing ribs 21262A respectively cross each other with these radial reinforcing ribs 21261A. In this way, when the flywheel 10A is driven to generate relative to the 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 a large deformation of the bottom shell 211A and the flange cover 2126A. 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, thereby avoiding the shaking of the flywheel assembly and the uneven resistance.

[0107] Furthermore, the bottom shell 211A has an outer receiving groove 2111A, a shaft through-hole 2112A and a threading hole 2113A. The shaft through-hole 2112A and the threading hole 2113A of the bottom shell 211A are connected to the outer receiving groove 2111A and the housing space 213A of the outer shell 21A, respectively. The fixed portion of the potentiometer 26A is received in the outer receiving groove 2111A of the bottom shell 211A. The movable portion passes through the shaft through-hole 2112A of the bottom shell 211A and is mounted on the sector gear 254A. The internal magnetic control device 20A includes a wire 28A. One end of the wire 28A is connected to the fixed portion of the potentiometer 26A, and the other end passes through the wire through-hole 2113A of the bottom shell 211A and extends into the housing space 213A of the outer shell 21A. The wire 28A is also connected to the circuit board 27A. It will be appreciated that the drive motor 22A is also connected to the circuit board 27A via the wire 28A. In this way, the circuit board 27A can control the operating state of the drive motor 22A based on the resistance signal fed back by the potentiometer 26A.

[0108] 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 toward 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 toward the shell space 213A of the outer shell 21A, wherein the bottom shell 211A 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 on the outer side of the swing arm 23A, and is used to limit the maximum distance that the swing arm 23A swings outward to 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 on the inner side of the swing arm 23A, and is used to limit the maximum distance that the swing arm 23A swings inward to prevent the swing arm 23A from colliding with the circuit board 27A.

[0109] 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 axis 30A. The power generation magnet 52A is mounted on the flywheel body 11A, allowing it to rotate with the rotation of the flywheel 10A. The coil unit 51A and the power generation magnet 52A are circumferentially positioned opposite each other, and both are located within 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, generating current within the coil unit 51A, enabling the flywheel assembly to generate electricity. It should be understood that the circumferential direction refers to the direction of rotation of the flywheel 10A.

[0110] In the flywheel assembly of the present invention, the coil unit 51A of the power generation device 50A and the power generation magnet 52A are both located in the device center through-hole 201A of the internal magnetic control device 20A, which makes it possible for the power generation device 50A to not occupy additional space, thereby facilitating reduction in the volume of the flywheel assembly and making the appearance of the flywheel assembly regular, so that the flywheel assembly can be matched with different types of fitness equipment.

[0111] 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, each of which is wound with one of the coils 512A. The coil support 511A is fixedly mounted on the flange cover 2126A. The flange cover 2126A7 allows the coil unit 51A to remain stationary relative to the assembly axis 30A. Specifically, the flange cover 2126A has a boss 21263A that protrudes toward the center hole 2110A of the bottom shell 211A. The coil support 511A is fixedly mounted on the boss 21263A of the flange cover 2126A, thereby securing the coil support 511A to the flange cover 2126A.

[0112] The flywheel body 11A further includes an assembly ring 115A, which extends from the wheel disc 113A to the bottom shell center hole 2110A of the bottom shell 211A, and the assembly ring 115A surrounds the assembly axis 30A, wherein the power generation magnet 52A is arranged on the assembly ring 115A of the flywheel body 11A, so that the assembly ring 115A of the flywheel body 11A is used to set the power generation magnet 52A in the device center through hole 201A of the internal magnetic control device 20A, and make the position of the power generation magnet 52A and the position of the coil unit 51A correspond in the circumferential direction. In this way, when the flywheel 10A is driven to rotate relative to the internal magnetic control device 20A, the power generation magnet 52A rotates around the coil unit 51A to enable 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.

[0113] Preferably, in this specific example of the flywheel assembly of the present invention, the number of the power generation magnets 52A is plural, and these power generation magnets 52A are annularly arranged on the assembly ring 115A of the flywheel body 11A.

[0114] Preferably, the coil 512A is connected to the circuit board 27A, so that the electric energy generated by the power generation device 50A can be used to drive the drive motor 22A to work. It can be understood that since the coil bracket 511A of the coil unit 51A is fixedly mounted on the boss 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 of the coil 512A and the circuit board 27A. Specifically, the flange cover 2126A has a cover through-hole 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 through-hole 21264A of the flange cover 2126A, wherein the connecting line of the coil 512A extends through the cover through-hole 21264A of the flange cover 2126A and the cover notch 21252A of the plate cover 2125A to the shell space 213A of the outer shell 21A, so that the coil 512A is connected to the circuit board 27A.

[0115] It is understood that when the flywheel 10A is driven to rotate relative to the inner magnetic control device 20A, causing the conductor 12A to cut the magnetic flux lines of the inner magnetic control device 20A and generate eddy currents, the conductor 12A generates a large amount of heat. In the flywheel assembly of the present invention, to achieve rapid heat dissipation of the flywheel assembly, the inner magnetic control device 20A is provided with at least one heat dissipation space 202A at its edge. The heat dissipation space 202A extends through opposite sides of the inner magnetic control device 20A in the thickness direction of the inner magnetic control device 20A. A portion of the conductor 12A is exposed to the heat dissipation space 202A of the inner magnetic control device 20A. As a result, the heat generated by the conductor 12A when cutting the magnetic flux 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, thereby achieving rapid heat dissipation of the flywheel assembly.

[0116] In this specific example of the flywheel assembly of the present invention, the inner magnetic control device 20A is recessed from its edge toward the central through-hole 201A of the device to form the heat dissipation space 202A. This exposes a portion of the conductor 12A to the heat dissipation space 202A of the inner magnetic control device 20A. Heat generated by the conductor 12A when cutting the magnetic flux lines of the inner magnetic control device 20A can be rapidly radiated to the external environment through the heat dissipation space 202A of the inner magnetic control device 20A, thereby achieving rapid heat dissipation of the flywheel assembly. Preferably, the heat dissipation space 202A of the inner magnetic control device 20A is fan-shaped.

[0117] The bottom shell 211A further has at least one bottom shell convection hole 2117A, which connects the shell space 213A of the outer shell 21A and the external environment. The top cover 212A has a top cover convection hole 2124A, which is formed on the flange cover 2126A. The top cover convection hole 2124A connects the shell space 213A of the outer shell 21A and 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 greatly improve the heat dissipation speed of the flywheel assembly.

[0118] The inner magnetic control device 20A further has a heat dissipation slot 204A. The heat dissipation slot 204A 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 slot 204A of the inner magnetic control device 20A. In this way, when the flywheel 10A is driven to rotate relative to the inner magnetic control device 20A, causing the conductor 12A to cut the magnetic flux 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, thereby achieving rapid heat dissipation of the flywheel assembly.

[0119] Those skilled in the art will appreciate that the embodiments of the present invention described above and shown in the accompanying drawings are intended to be illustrative only and are not intended to limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and illustrated in the embodiments. Any variations or modifications may be made to the embodiments of the present invention without departing from the principles described.

Claims

1. A flywheel assembly with power generation function, characterized in that: include: Assembly shaft; An internal magnetic control device, wherein the internal magnetic control device is fixedly mounted on one end of the assembly shaft; A flywheel, wherein the flywheel comprises a flywheel body and a conductor, the flywheel body having a flywheel cavity and a flywheel 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 the assembly shaft passing through the flywheel central through-hole of the flywheel body, and the flywheel being rotatable relative to the assembly shaft, wherein the internal magnetic control device 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 is constructed to remain stationary relative to the assembly shaft, and the power generation magnet is arranged on the flywheel body, and in the circumferential direction, the position of the coil unit and the position of the power generation magnet are relative.

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

3. The flywheel assembly according to claim 2, wherein the flywheel assembly includes a flange, which is fixedly mounted on one end of the assembly shaft and fixedly assembled on the internal magnetic control device, and the flange and the assembly shaft cooperate with each other to suspend the internal magnetic control device in the flywheel cavity of the flywheel body. 4 . The flywheel assembly according to claim 2 , wherein the internal magnetic control device is locked to one end of the mounting shaft. 5 . The flywheel assembly according to claim 1 , wherein the inner magnetic control device has a heat dissipation space, and in a thickness direction of the inner magnetic control device, the heat dissipation space runs through two opposite sides of the inner magnetic control device. 6 . The flywheel assembly according to claim 5 , wherein the heat dissipation space of the inner magnetron device is located at an edge of the inner magnetron device.

7. The flywheel assembly according to claim 5, wherein the flywheel body has a flywheel heat dissipation hole, the flywheel heat dissipation hole connects the flywheel cavity and the external environment, and 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 magnetic control device has convection perforations, wherein in the thickness direction of the inner magnetic control device, the convection perforations penetrate opposite sides of the inner magnetic control device, and when viewed from above, the convection perforations are located between the central perforation of the device and the edge of the inner magnetic control device.

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

10. The flywheel assembly according to claim 3, wherein the flange comprises 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 mounted on the assembly shaft, the transverse extension arm is fixedly mounted on the internal magnetic control device, the longitudinal extension arm extends to the device center through-hole of the internal magnetic control device, the coil unit is fixedly mounted on the longitudinal extension arm, so that the flange enables the coil unit to be constructed to remain stationary relative to the assembly shaft, wherein the flywheel body has an assembly ring, the assembly ring surrounds the assembly shaft and extends to the device center through-hole of the internal magnetic control device, and the power generation magnet is arranged on the assembly ring of the flywheel body.

11. A flywheel assembly according to claim 3, wherein the flange includes a flange body and a transverse extension arm integrally extending from the flange body, the flange body is fixedly mounted on the assembly shaft, the transverse extension arm is fixedly mounted on the internal magnetic control device, the coil unit is fixedly arranged on the internal magnetic control device, so that the internal magnetic control device can construct the coil unit to remain stationary relative to the assembly shaft, wherein the flywheel body has an assembly ring, which surrounds the assembly shaft and extends to the device center through-hole of the internal magnetic control device, and the power generation magnet is arranged on the assembly ring of the flywheel body.

12. The flywheel assembly according to 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 has a shell space and a side opening connected to the shell space, the top cover comprises a plate cover and a flange cover, the plate cover is installed on the bottom shell to form a part of the shell space between the plate cover and the bottom cover, the flange cover is installed on the bottom shell to form another part of the shell space and the side opening between the plate cover and the bottom shell, 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 on the edge of the bottom shell and the edge of the flange cover, respectively, so that the swing arm is rotatably maintained at the side opening of the shell, the control magnet is arranged on the swing arm, the transmission unit is arranged in the shell space of the shell, and the transmission unit is connected to the worm of the drive motor and the driven end of the swing arm, the circuit board is arranged in the shell space of the shell and is located below the plate cover, and the drive motor and the coil unit are respectively connected to the circuit board.

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

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