Fitness equipment and its internal magnetic control device

Abstract

The present invention discloses a fitness equipment and an internal magnetic control device thereof. The internal magnetic control device includes a slider, at least one connecting rod, at least one set of magnetic elements, at least one swing arm and a housing. Two ends of the connecting rod are respectively rotatably mounted on the slider and the driven end of the swing arm. One set of the magnetic elements is arranged on the outer side of the swing arm. The housing has a central through hole, a housing space, a peripheral opening, an avoidance space and a slide rail. The housing space is located outside the central through hole. The peripheral opening communicates with the housing space. The avoidance space extends from the housing space towards the central through hole. The extending direction of the slide rail is consistent with the radial direction of the housing. The pivoting end of the swing arm is rotatably mounted on the edge of the housing. The slider is slidably mounted on the slide rail. The slider is allowed to slide into the avoidance space of the housing to increase its stroke.

Description

Technical Field

[0001] The present invention relates to the field of fitness equipment, and particularly to a fitness equipment and an internal magnetic control device thereof. Background Art

[0002] In recent years, with the continuous development of the social economy and the continuous improvement of people's health awareness, more and more people choose to do physical exercise at home or in the gym. Among them, fitness equipment for aerobic exercise projects such as spinning bikes, elliptical machines, and rowing machines are the first choices for people to do physical exercise. The common feature of this kind of fitness equipment is to provide an internal magnetic control device and a flywheel surrounding the outside of the internal magnetic control device. Users carry out physical exercise by driving the flywheel to rotate. When the flywheel is driven to rotate outside the internal magnetic control device, the flywheel cuts the magnetic induction lines of the internal magnetic control device to obtain a load. In order to facilitate users to obtain different fitness effects by using this fitness equipment, the load of the flywheel is allowed to be adjusted. The way to adjust the load of the flywheel is to make the internal magnetic control device provide at least one swing arm, which is installed with a magnetic element, and adjust the distance between the magnetic element and the flywheel by driving the swing arm to swing, so as to adjust the load of the flywheel. Specifically, when the swing arm swings to make the magnetic element away from the flywheel, the load of the flywheel is adjusted smaller. Correspondingly, when the swing arm swings to make the magnetic element close to the flywheel, the load of the flywheel is adjusted larger. How to drive the swing arm to swing in a larger range and allow the load of the flywheel to be adjusted in a larger range is the technical problem that the inventor of the present invention is committed to solving. Summary of the Invention

[0003] An object of the present invention is to provide a fitness equipment and an internal magnetic control device thereof, wherein a slider of the internal magnetic control device can drive at least one swing arm to swing when sliding along a track formed by a slide rail, so as to adjust the distance between a group of magnetic elements arranged on the swing arm and a flywheel surrounding the internal magnetic control device, thereby adjusting the load of the flywheel when it is driven to rotate.

[0004] An object of the present invention is to provide a fitness equipment and an internal magnetic control device thereof, wherein a housing of the internal magnetic control device provides an avoidance space to avoid the slider, so that the slider is allowed to have a larger stroke range, so that the slider can drive the swing arm to swing in a larger swing range, and further adjust the load of the flywheel when it is driven to rotate in a larger load range.

[0005] An object of the present invention is to provide a fitness equipment and an internal magnetic control device thereof, wherein the sliding stroke of the slider can exceed 12 mm, and even can reach 20 mm, so that the slider has a larger stroke range.

[0006] An object of the present invention is to provide a fitness equipment and an internal magnetic control device thereof, wherein the internal magnetic control device allows calibration of the key position of the slider without being disassembled, so as to improve the production efficiency of the internal magnetic control device and facilitate control of the consistency of a batch of the internal magnetic control devices during mass production of the internal magnetic control device. For example, the internal magnetic control device allows calibration of the initial resistance value position on the outer side of the housing.

[0007] An object of the present invention is to provide a fitness equipment and an internal magnetic control device thereof, wherein the internal magnetic control device provides a sliding potentiometer and a calibration potentiometer in series or in parallel, and the key position of the slider of the internal magnetic control device can be calibrated by fine-tuning the calibration potentiometer. For example, the initial resistance value position of the internal magnetic control device can be calibrated by slightly rotating the calibration potentiometer.

[0008] An object of the present invention is to provide a fitness equipment and an internal magnetic control device thereof, wherein the housing provides a calibration channel, and the calibration potentiometer corresponds to the calibration channel inside the housing. Thus, without disassembling the internal magnetic control device, the initial resistance value position of the internal magnetic control device can be calibrated by rotating the calibration potentiometer through the calibration channel of the housing, which can greatly improve the resistance calibration efficiency of the internal magnetic control device.

[0009] According to an aspect of the present invention, the present invention provides an internal magnetic control device, which includes:

[0010] A slider;

[0011] At least one connecting rod;

[0012] At least one set of magnetic elements;

[0013] At least one swing arm, wherein the swing arm has a pivot end and a driven end corresponding to the pivot end, wherein a set of the magnetic elements is arranged on the outer side of the swing arm, and opposite ends of the connecting rod are respectively rotatably mounted on the driven end of the swing arm and the slider; and

[0014] A housing, wherein the housing has a central perforation, a housing space, a peripheral opening, an avoidance space, and a slide rail. The housing space is located outside the central perforation. The peripheral opening communicates with the housing space. The avoidance space extends from the housing space towards the central perforation. The extending direction of the slide rail is the same as the radial direction of the housing, and the outer end of the slide rail is located towards the edge direction of the housing, and the inner end of the slide rail extends towards the avoidance space direction. Wherein the pivot end of the swing arm is rotatably mounted on the edge of the housing, the slider is slidably mounted on the slide rail, and at least a part of the slider is allowed to slide into the avoidance space of the housing.

[0015] According to one aspect of the present invention, the slide rail extends into the avoidance space.

[0016] According to one aspect of the present invention, the stroke of the slider is greater than 12 mm.

[0017] According to one aspect of the present invention, the internal magnetic control device includes two of the connecting rods, two sets of the magnetic elements, and two of the swing arms. The pivot ends of the two swing arms are adjacent. Each set of the magnetic elements is respectively arranged outside each swing arm. The opposite ends of each connecting rod are respectively rotatably mounted on the driven end of each swing arm and each side portion of the slider.

[0018] According to one aspect of the present invention, the housing includes a bottom shell and a shell cover. The bottom shell has a bottom shell boss and a bottom shell central hole formed in the bottom shell boss. Wherein the shell cover has a shell cover boss and a shell cover central hole formed in the shell cover boss. Wherein the bottom shell and the shell cover are mounted in a manner that the bottom shell boss of the bottom shell and the shell cover boss of the shell cover are mutually adhered, so that the bottom shell central hole of the bottom shell and the shell cover central hole of the shell cover correspond to form the central perforation of the housing, and the housing space and the peripheral opening are formed between the bottom shell and the shell cover. Wherein the side wall of the bottom shell boss of the bottom shell is concave towards the bottom shell central hole to form the avoidance space of the housing.

[0019] According to one aspect of the present invention, the housing includes a bottom case and a case cover. The bottom case has a bottom case boss and a bottom case center hole formed in the bottom case boss. The case cover has a case cover boss and a case cover center hole formed in the case cover boss. The bottom case and the case cover are installed in such a way that the bottom case boss of the bottom case and the case cover boss of the case cover are mutually attached, so that the bottom case center hole of the bottom case and the case cover center hole of the case cover correspond to form the center perforation of the housing, and a housing space and a peripheral opening are formed between the bottom case and the case cover. The side wall of the bottom case boss of the bottom case is recessed inward in the direction of the bottom case center hole to form a part of the avoidance space of the housing, and the side wall of the case cover boss of the case cover is recessed inward in the direction of the case cover center hole to form another part of the avoidance space of the housing.

[0020] According to one aspect of the present invention, the internal magnetic control device further includes a potential control unit. The potential control unit includes a circuit board and a slide potentiometer. The circuit board is fixedly installed in the housing and held in the housing space. The slide potentiometer further includes a potentiometer body and a slide bar slidably installed on the potentiometer body. The potentiometer body is mounted on the circuit board, and the slide bar is installed on the slider.

[0021] According to one aspect of the present invention, the potential control unit further includes a calibration potentiometer. The calibration potentiometer is mounted on the circuit board, and the calibration potentiometer is connected in series with the slide potentiometer.

[0022] According to one aspect of the present invention, the housing has a calibration channel. The calibration potentiometer corresponds to the calibration channel to calibrate the initial resistance position of the internal magnetic control device by operating the calibration potentiometer through the calibration channel.

[0023] According to another aspect of the present invention, the present invention further provides a fitness equipment, which includes:

[0024] An equipment rack;

[0025] A foot pedal device, wherein the foot pedal device is treadably installed on the equipment rack;

[0026] A flywheel, wherein the flywheel is rotatably installed on the equipment rack and is drivingly connected to the pedal device; and

[0027] An internal magnetic control device, wherein the internal magnetic control device further includes:

[0028] A slider;

[0029] At least one connecting rod;

[0030] At least one set of magnetic elements;

[0031] At least one swing arm, wherein the swing arm has a pivot end and a driven end corresponding to the pivot end, wherein one set of the magnetic elements is arranged outside the swing arm, and opposite ends of the connecting rod are respectively rotatably mounted on the driven end of the swing arm and the slider; and

[0032] A housing, wherein the housing has a central through hole, a housing space, a peripheral opening, an avoidance space and a slide rail, the housing space is located outside the central through hole, the peripheral opening communicates with the housing space, the avoidance space extends from the housing space towards the direction of the central through hole, the extending direction of the slide rail is consistent with the radial direction of the housing, and an outer end of the slide rail faces the edge direction of the housing, an inner end of the slide rail extends towards the avoidance space, wherein the pivot end of the swing arm is rotatably mounted on the edge of the housing, the slider is slidably mounted on the slide rail, and at least a part of the slider is allowed to slide into the avoidance space of the housing, and a mounting shaft of an equipment rack is mounted in the central through hole of the housing of the inner magnetic control device to mount the inner magnetic control device on the equipment rack, and a flywheel surrounds the outside of the inner magnetic control device. Description of the Drawings

[0033] By describing the embodiments of the present application in more detail in conjunction with the drawings, the above and other objects, features and advantages of the present invention will become more obvious. The drawings are used to provide a further understanding of the present invention and constitute a part of the specification, and are used together with the present invention to explain the content of the present invention, and do not constitute a limitation to the present invention. In the drawings, the same reference numerals generally represent the same components or steps.

[0034] Figure 1 It is a schematic diagram of the application environment of an inner magnetic control device according to a preferred embodiment of the present invention, which shows a flywheel surrounding the outside of the inner magnetic control device.

[0035] Figure 2 It is a perspective three-dimensional schematic diagram of one perspective of the inner magnetic control device according to the above preferred embodiment of the present invention.

[0036] Figure 3 It is a perspective three-dimensional schematic diagram of another perspective of the inner magnetic control device according to the above preferred embodiment of the present invention.

[0037] Figure 4 It is an exploded schematic diagram of one perspective of the inner magnetic control device according to the above preferred embodiment of the present invention.

[0038] Figure 5 is Figure 4 a partially enlarged schematic view of the position.

[0039] Figure 6 is an exploded schematic view from another perspective of the inner magnetic control device according to the above preferred embodiment of the present invention.

[0040] Figure 7 is a three-dimensional schematic view of a bottom shell of the inner magnetic control device according to the above preferred embodiment of the present invention.

[0041] Figure 8 is a three-dimensional schematic view of a shell cover of the inner magnetic control device according to the above preferred embodiment of the present invention.

[0042] Figure 9 is a three-dimensional schematic view from one perspective of a slider of the inner magnetic control device according to the above preferred embodiment of the present invention.

[0043] Figure 10 is a three-dimensional schematic view from another perspective of the slider of the inner magnetic control device according to the above preferred embodiment of the present invention.

[0044] Figure 11A and Figure 11B are respectively partial structural schematic views of the working process of the inner magnetic control device according to the above preferred embodiment of the present invention.

[0045] Figure 12 is a schematic view of the resistance calibration principle of the inner magnetic control device according to the above preferred embodiment of the present invention.

[0046] Figure 13 is a three-dimensional schematic view of a fitness equipment according to a preferred embodiment of the present invention, wherein the fitness equipment is applied with the inner magnetic control device. Detailed implementation manners

[0047] Next, exemplary embodiments according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all embodiments of the present application. It should be understood that the present application is not limited by the exemplary embodiments described herein.

[0048] Attached Figures 1 to 12 shows an inner magnetic control device 100 according to a preferred embodiment of the present invention, wherein the inner magnetic control device 100 is arranged to provide a magnetic field environment. Attached Figure 13 shows a fitness equipment, wherein the fitness equipment is applied with the inner magnetic control device 100 of the present invention.

[0049] It is worth mentioning that Attached Figure 13The fitness equipment implemented as an elliptical machine shown is only exemplary and does not limit the specific type of the fitness equipment of the present invention. For example, in other examples of the present invention, the fitness equipment may also be a rowing machine, a spinning bike, etc.

[0050] Continue to refer to the attached Figure 13 and in combination with the attached Figure 1 The fitness equipment includes an equipment rack 200, a pedaling device 300 and a flywheel 400, wherein the pedaling device 300 is treadably installed on the equipment rack 200, wherein the flywheel 400 is rotatably installed on the equipment rack 200 and is drivably connected to the pedaling device 300, and the flywheel 400 surrounds the outside of the internal magnetic control device 100. Preferably, the internal magnetic control device 100 is installed on the equipment rack 200 so that the relative positions of the internal magnetic control device 100 and the equipment rack 200 remain unchanged. When the user continuously pedals the pedaling device 300 to drive the flywheel 400 to rotate relative to the equipment rack 200 and the internal magnetic control device 100, the flywheel 400 continuously cuts the magnetic induction lines of the internal magnetic control device 100 to obtain a load, so that the user can achieve the purpose of fitness.

[0051] It can be understood that the load obtained when the flywheel 400 is driven to rotate is related to the amount of magnetic induction lines of the internal magnetic control device 100 cut by the flywheel 400. The more magnetic induction lines of the internal magnetic control device 100 are cut by the flywheel 400 when it is driven, the greater the load obtained by the flywheel 400. At this time, the user is more laborious when pedaling the pedaling device 300. Correspondingly, the less magnetic induction lines of the internal magnetic control device 100 are cut by the flywheel 400 when it is driven, the smaller the load obtained by the flywheel 400. At this time, the user is more labor-saving when pedaling the pedaling device 300.

[0052] It is worth mentioning that the load obtained when the flywheel 400 is driven to rotate is reflected in the resistance value when the user pedals the pedaling device 300. The greater the load obtained when the flywheel 400 is driven to rotate, the greater the resistance value when the user pedals the pedaling device 300. The smaller the load obtained when the flywheel 400 is driven to rotate, the smaller the resistance value when the user pedals the pedaling device 300.

[0053] To meet the different requirements of users for the load of the flywheel 400 of the fitness equipment, the internal magnetic control device 100 of the present invention is configured to be able to adjust the position of the magnetic induction lines relative to the flywheel 400. Thus, when the position of the magnetic induction lines of the internal magnetic control device 100 is closer to the flywheel 400, the amount of magnetic induction lines cut by the flywheel 400 when being driven is more. On the contrary, when the position of the magnetic induction lines of the internal magnetic control device 100 is farther from the flywheel 400, the amount of magnetic induction lines cut by the flywheel 400 when being driven is less. In this way, the resistance value when the user steps on the stepping device 300 can be adjusted.

[0054] Specifically, continuing to refer to the attached Figures 1 to 11B The internal magnetic control device 100 includes a housing 10, a slider 20, at least one swing arm 30, at least one connecting rod 40, and at least one set of magnetic elements 50.

[0055] The housing 10 has a central through hole 101, a housing space 102, a peripheral opening 103, an avoidance space 104, and a slide rail 105. The housing space 102 is located outside the central through hole 101. The peripheral opening 103 is formed on the periphery of the housing 10, and the peripheral opening 103 communicates with the housing space 102. The avoidance space 104 extends from the housing space 102 towards the central through hole 101. The slide rail 105 is located in the housing space 102, and the extending direction of the slide rail 105 is consistent with the radial direction of the housing 10, so that the outer end 1051 of the slide rail 105 extends towards the edge direction of the housing 10, and the inner end 1052 of the slide rail 105 extends towards the avoidance space 104 direction of the housing 10. Preferably, the slide rail 105 is arranged to extend into the avoidance space 104 of the housing 10.

[0056] The housing 10 allows the mounting shaft of the equipment rack 200 to penetrate and be held in the central through hole 101 of the housing 10 to fixedly mount the internal magnetic control device 100 on the equipment rack 200, wherein the flywheel 400 surrounds the housing 10, and the peripheral opening 103 of the housing 10 faces the inner side of the flywheel 400.

[0057] The slider 20 is slidably mounted on the slide rail 105 of the housing 10, and the slider 20 is allowed to slide into the avoidance space 104 of the housing 10, so that the slider 20 has a larger stroke range. For example, in this specific example of the internal magnetic control device 100 shown in the attached Figures 1 to 11B the stroke of the slider 20 can exceed 12 mm and can even reach 20 mm.

[0058] Specifically, referring to the attachedFigure 11A and Figure 11B The slider 20 has a saddle groove 21, wherein the slide rail 105 of the housing 10 extends into the saddle groove 21 of the slider 20 to allow the slider 20 to straddle the slide rail 105 of the housing 10. Thus, when the slider 20 is driven, the slider 20 can reliably slide along the track formed by the slide rail 105 between the outer end 1051 and the inner end 1052 of the slide rail 105.

[0059] More specifically, with continued reference to the attached Figure 11A and Figure 11B The slider 20 includes a slider body 22 and two slider arms 23. The two slider arms 23 extend integrally outward from one side of the slider body 22 to form the saddle groove 21 between the slider body 22 and the two slider arms 23. When the slider 20 is mounted on the slide rail 105 of the housing 10, the slide rail 105 extends into the saddle groove 21 of the slider 20, so that the slider body 22 fits against the top surface of the slide rail 105 and each slider arm 23 fits against each side surface of the slide rail 105, thereby ensuring that the slider 20 straddles the slide rail 105 reliably, and thus preventing the slider 20 from falling off the slide rail 105 when the slider 20 is driven to slide along the track formed by the slide rail 105.

[0060] The swing arm 30 has a pivot end 31 and a driven end 32 corresponding to the pivot end 31. The outer side of the swing arm 30 faces the peripheral opening 103 of the housing 10. A set of magnetic elements 50 are disposed on the outer side of the swing arm 30 to provide a magnetic field environment at the position of the peripheral opening 103 of the housing 10. The pivot end 31 of the swing arm 30 is rotatably mounted on the edge of the housing 10, the driven end 32 of the swing arm 30 is rotatably mounted on one end of the connecting rod 40, and the other end of the connecting rod 40 is rotatably mounted on the slider 20. Thus, when the slider 20 is driven to slide along the track formed by the slide rail 105 of the housing 10, the slider 20 can apply a force to the driven end 32 of the swing arm 30 through the connecting rod 40 to allow the swing arm 30 to swing relative to the housing 10 about the pivot end 31 of the swing arm 30, so that the outer side of the swing arm 30 swings towards the direction close to the peripheral opening 103 of the housing 10 or swings towards the direction away from the peripheral opening 103 of the housing 10.

[0061] Specifically, when the slider 20 is driven to slide along the track formed by the slide rail 105 of the housing 10 from the outer end 1051 to the inner end 1052 of the slide rail 105, the slider 20 can pull the swing arm 30 to swing inward through the connecting rod 40, so that the swing arm 30 drives the magnetic element 50 to move away from the peripheral opening 103 of the housing 10. Correspondingly, when the slider 20 is driven to slide along the track formed by the slide rail 105 of the housing 10 from the inner end 1052 to the outer end 1051 of the slide rail 105, the slider 20 can push the swing arm 30 to swing outward through the connecting rod 40, so that the swing arm 30 drives the magnetic element 50 to move toward the direction close to the peripheral opening 103 of the housing 10.

[0062] Preferably, the swing arm 30 extends curvedly between the pivot end 31 and the driven end 32, so that the swing arm 30 is in an arc shape. In this way, the shape of the outer side of the swing arm 30 is substantially the same as the shape of the periphery of the housing 10. Preferably, the magnetic element 50 is in an arc shape, and the shape of the inner side of the magnetic element 50 is consistent with the shape of the outer side of the swing arm 30, so as to reliably arrange the magnetic element 50 on the outer side of the swing arm 30.

[0063] It is worth mentioning that the way of arranging the magnetic element 50 on the swing arm 30 is not limited in the inner magnetic control device 100 of the present invention. For example, the magnetic element 50 can be arranged on the outer side of the swing arm 30 by bonding, or the magnetic element 50 can be arranged on the outer side of the swing arm 30 by embedding.

[0064] It is also worth mentioning that the number of the magnetic elements 50 in a group of the magnetic elements 50 is not limited in the inner magnetic control device 100 of the present invention. For example, in Figures 1 to 11B this specific example of the inner magnetic control device 100 shown, the number of the magnetic elements 50 in a group of the magnetic elements 50 is three, and they are arranged on the outer side of the swing arm 30 at intervals.

[0065] Continue to refer to the appendix Figures 1 to 11B, in this specific example of the inner magnetic control device 100 of the present invention, the inner magnetic control device 100 includes one slider 20, two swing arms 30, two connecting rods 40, and two sets of magnetic elements 50. The two swing arms 30 are rotatably mounted on the edge of the housing 10 in such a way that the pivot ends 31 of the two swing arms 30 are adjacent to each other, and the driven ends 32 of the two swing arms 30 respectively extend to positions adjacent to the slider 20. One end portions of the two connecting rods 40 are respectively rotatably mounted on the driven ends 32 of the two swing arms 30, and the other end portions of the two connecting rods 40 are respectively rotatably mounted on each side of the slider 20. Each set of magnetic elements 50 is respectively disposed on the outer side of each swing arm 30.

[0066] Reference attachment Figure 11A and Figure 11B , when the slider 20 is driven to slide along the track formed by the slide rail 105 of the housing 10 from the inner end 1052 to the outer end 1051 of the slide rail 105, the slider 20 respectively and synchronously pushes each swing arm 30 to swing outward through each connecting rod 40, so that each swing arm 30 respectively drives each set of magnetic elements 50 to move towards the direction close to the peripheral opening 103 of the housing 10. At this time, the distance between a set of magnetic elements 50 and the flywheel 400 is reduced, so that when the flywheel 400 is driven to rotate, the amount of magnetic induction lines of the inner magnetic control device 100 cut by the flywheel 400 increases, and the load obtained by the flywheel 400 increases, making it more laborious for the user to step on the stepping device 300; correspondingly, when the slider 20 is driven to slide along the slide rail 105 of the housing 10 from the outer end 1051 to the inner end 1052 of the slide rail 105, the slider 20 respectively and synchronously pulls each swing arm 30 to swing inward through each connecting rod 40, so that each swing arm 30 respectively drives each set of magnetic elements 50 to move towards the direction away from the peripheral opening 103 of the housing 10. At this time, the distance between a set of magnetic elements 50 and the flywheel 400 is increased, so that when the flywheel 400 is driven to rotate, the amount of magnetic induction lines of the inner magnetic control device 100 cut by the flywheel 400 decreases, and the load obtained by the flywheel 400 decreases, making it easier for the user to step on the stepping device 300.

[0067] It can be understood that when the slider 20 slides to the outer end 1051 of the slide rail 105 of the housing 10, the swing arm 30 minimizes the distance between a set of the magnetic elements 50 and the flywheel 400. At this time, when the flywheel 400 is driven to rotate, the amount of magnetic induction lines of the internal magnetic control device 100 cut by the flywheel 400 is the largest, so that the flywheel 400 has the maximum load, that is, the resistance when the user steps on the stepping device 300 is the largest. Correspondingly, when the slider 20 slides to the inner end 1052 of the slide rail 105 of the housing 10 and the slider 20 enters the avoidance space 104 of the housing 10, the swing arm 30 maximizes the distance between a set of the magnetic elements 50 and the flywheel 400. At this time, when the flywheel 400 is driven to rotate, the amount of magnetic induction lines of the internal magnetic control device 100 cut by the flywheel 400 is the smallest, so that the flywheel 400 has the minimum load, that is, the resistance when the user steps on the stepping device 300 is the smallest. Therefore, by providing the avoidance space 104 in the housing 10, the slider 20 can have a larger stroke range, so that the swing arm 30 has a larger swing range, and further adjust the load of the flywheel 400 within a larger load range.

[0068] Continue to refer to the attached Figures 1 to 11B The housing 10 further includes a bottom case 11 and a case cover 12. The bottom case 11 has a bottom case boss 111 and a bottom case center hole 112 formed in the bottom case boss 111. The case cover 12 has a case cover boss 121 and a case cover center hole 122 formed in the case cover boss 121. The bottom case 11 and the case cover 12 are installed with each other. The bottom case center hole 112 of the bottom case 11 and the case cover center hole 122 of the case cover 12 correspond to and communicate with each other to form the center through hole 101 of the housing 10. The bottom case boss 111 of the bottom case 11 and the case cover boss 121 of the case cover 12 are attached to each other to form the housing space 102 and the peripheral opening 103 between the bottom case 11 and the case cover 12. And the housing space 102 and the center through hole 101 are isolated from each other to make the two independent.

[0069] The shapes of the bottom case 11 and the case cover 12 define the shape of the housing 10, and the housing 10 forms the general appearance of the internal magnetic control device 100. In this specific example of the internal magnetic control device 100 of the present invention, both the bottom case 11 and the case cover 12 are designed to be disc-shaped, so that the housing 10 is disc-shaped, and further the shape of the internal magnetic control device 100 matches the shape of the flywheel 400.

[0070] It is worth mentioning that the installation method of the bottom shell 11 and the shell cover 12 of the housing 10 is not limited in the internal magnetic control device 100 of the present invention. For example, in this specific example of the internal magnetic control device 100 shown in the attached Figures 1 to 11B In this specific example of the internal magnetic control device 100 shown, the bottom shell 11 has a plurality of bottom shell mounting holes 113, which are formed on the bottom shell boss 111 at intervals. Correspondingly, the shell cover 12 has a plurality of shell cover mounting holes 123, which are formed on the shell cover boss 121 at intervals. Each of the bottom shell mounting holes 113 of the bottom shell 11 corresponds to each of the shell cover mounting holes 123 of the shell cover 12 respectively, to allow a screw to pass through and lock the bottom shell 11 and the shell cover 12 in a manner of cooperation between the screw and the nut, and thus the bottom shell 11 and the top cover 12 are installed in this way.

[0071] Preferably, the internal magnetic control device 100 further includes a flange 60. The flange 60 has a flange through-hole 61 and a plurality of flange mounting holes 62. The flange 60 is attached to the shell cover 12, and the flange through-hole 61 of the flange 60 corresponds to the central through-hole 101 of the housing 10, and each of the flange mounting holes 62 of the flange 60 corresponds to each of the shell cover mounting holes 123 of the shell cover 12 respectively, to allow the screw passing through the shell cover mounting hole 123 of the shell cover 12 to further pass through the flange mounting hole 62 of the flange 60, so that the flange 60 cooperates with the screw and the nut to lock the bottom shell 11 and the shell cover 12.

[0072] Preferably, the housing 10 further includes a series of support columns 13. Opposite ends of these support columns 13 extend to the edge of the bottom shell 11 and the edge of the shell cover 12 respectively, for supporting the edge of the bottom shell 11 and the edge of the shell cover 12. In this way, these support columns 13 can prevent the edges of the bottom shell 11 and the shell cover 12 from deforming.

[0073] Specifically, referring to the attached Figure 7 and Figure 8 , the support column 13 includes a bottom shell support part 131 and a shell cover support part 132. The bottom shell support part 131 extends integrally outward from the edge of the bottom shell 11. The shell cover support part 132 extends integrally outward from the edge of the shell cover 12. When the bottom shell 11 and the shell cover 12 are installed with each other, the bottom shell support part 131 and the shell cover support part 132 can abut against each other, to support the edge of the bottom shell 11 and the edge of the shell cover 12 by the cooperation of the bottom shell support part 131 and the shell cover support part 132.

[0074] When installing the bottom shell 11 and the shell cover 12, to prevent the free ends of the bottom shell support part 131 and the shell cover support part 132 from being misaligned with each other, the free ends of the bottom shell support part 131 and the shell cover support part 132 can be inserted into each other. Specifically, the free end of the bottom shell support part 131 has a reduced size to form an insertion end 1311, and the free end of the shell cover support part 132 has an insertion slot 1321. The insertion end 1311 of the bottom shell support part 131 can be inserted into the insertion slot 1321 of the shell cover support part 132 to prevent the bottom shell support part 131 and the shell cover support part 132 from being misaligned.

[0075] Preferably, after the bottom shell 11 and the shell cover 12 are installed with each other so that the bottom shell support part 131 and the shell cover support part 132 form the support column 13, the position of the support column 13 corresponds to the gap between two adjacent magnetic elements 50, so as to avoid affecting the displacement of the magnetic elements 50 when the swing arm 30 swings.

[0076] Continue to refer to the attached Figure 7 and Figure 8 As shown in the figure, the middle part of the bottom shell 11 forms the bottom shell boss 111 by means of concave, so that the opposite sides of the bottom shell 11 respectively form the bottom shell boss 111 and a bottom shell groove 114 corresponding to the bottom shell boss 111. The bottom shell center hole 112 and these bottom shell mounting holes 113 of the bottom shell 11 communicate with the bottom shell groove 114 respectively. Correspondingly, the middle part of the shell cover 12 forms the shell cover boss 121 by means of concave, so that the opposite sides of the shell cover 12 respectively form the shell cover boss 121 and a shell cover groove 124 corresponding to the shell cover boss 121. The shell cover center hole 122 and these shell cover mounting holes 123 of the shell cover 12 communicate with the shell cover groove 124 respectively. After the bottom shell 11 and the shell cover 12 are installed with each other, the bottom shell groove 114 of the bottom shell 11 and the shell cover groove 124 of the shell cover 12 are respectively located on the opposite sides of the outer shell 10. The blocking block of the screw for locking the bottom shell 11 and the shell cover 12 can be held in the bottom shell groove 114 of the bottom shell 11, and the flange 60 and the nut can be held in the shell cover groove 124 of the shell cover 12. In this way, the internal magnetic control device 100 can prevent the screw, the nut and the flange 60 from protruding, which is beneficial to the thinning of the internal magnetic control device 100.

[0077] Continue to refer to the attached Figure 7 and Figure 8, the bottom case 11 has two bottom case rotation grooves 115, which are formed adjacent to each other at the edge of the bottom case 11. Correspondingly, the cover case 12 has two cover case rotation grooves 125, which are formed adjacent to each other at the edge of the cover case 12. After the bottom case 11 and the cover case 12 are installed with each other, each of the bottom case rotation grooves 115 of the bottom case 11 and each of the cover case rotation grooves 125 of the cover case 12 can correspond to each other. Refer to the attached Figure 4 and Figure 5 , on opposite sides of the pivot end 31 of each of the swing arms 30, there is respectively a bump 33. Each of the bumps 33 of the swing arm 30 is respectively rotatably installed in the bottom case rotation groove 115 of the bottom case 11 and the cover case rotation groove 125 of the cover case 12. Thus, the pivot end 31 of the swing arm 30 is rotatably installed on the outer shell 10.

[0078] Preferably, in this specific example of the internal magnetron device 100 of the present invention, the swing arm 30 can be formed by stamping and bending a sheet material. Therefore, the bump 33 of the swing arm 30 is flat. The internal magnetron device 100 further includes a plurality of cylindrical rotating blocks 70. In the middle of these rotating blocks 70, there is an assembly hole whose size and shape are both matched with the bump 33 of the swing arm 30 to assemble the rotating block 70 on the bump 33 of the swing arm 30. These rotating blocks 70 are respectively rotatably installed in the bottom case rotation groove 115 of the bottom case 11 and the cover case rotation groove 125 of the cover case 12. Thus, the pivot end 31 of the swing arm 30 is rotatably installed on the outer shell 10. Optionally, in an alternative example of the internal magnetron device 100 of the present invention, the bump 33 of the swing arm 30 can be set to be cylindrical to allow the bump 33 of the swing arm 30 to be directly installed in the bottom case rotation groove 115 of the bottom case 11 or the cover case rotation groove 125 of the cover case 12.

[0079] Continue to refer to the attached Figure 4 , Figure 5 and Figure 7 , the slide rail 105 of the outer shell 10 is formed on the bottom case 11, and the slide rail 105 is arranged to extend from the bottom case boss 111 of the bottom case 11 towards the edge of the bottom case 11. In other words, the slider 20 is slidably installed on the bottom case 11.

[0080] Preferably, the housing cover 12 has a limiting body 120 which is arranged to extend from the housing cover boss 121 of the housing cover 12 towards the edge of the housing cover 12. The top surface of the slider 20 corresponds to the limiting body 120 of the housing cover 12, so that the slider 20 is limited by the limiting body 120 to prevent the slider 20 from falling off the slide rail 105, thereby ensuring the reliability and stability of the internal magnet control device 100.

[0081] Refer to the appendix Figure 4 、 Figure 5 and Figure 7 , the side wall of the bottom shell boss 111 of the bottom shell 11 is recessed towards the direction of the bottom shell central hole 112 to form the avoidance space 104 of the outer shell 10. In this way, the avoidance space 104 of the outer shell 10 communicates with the housing space 102, and the avoidance space 104 extends from the housing space 102 towards the central through hole 101. The inner end 1052 of the slide rail 105 extends towards the avoidance space 104 of the outer shell 10. When the slider 20 is driven to slide to the inner end 1052 of the slide rail 105, at least a part of the slider 20 can enter the avoidance space 104 of the outer shell 10 to allow the bottom shell boss 111 of the bottom shell 11 to avoid the slider 20. In this way, the slider 20 is allowed to have a larger stroke range, so that the swing arm 30 can swing within a larger swing range, and further adjust the load of the flywheel 400 within a larger load range.

[0082] Preferably, the inner end 1052 of the slide rail 105 extends to the avoidance space 104 of the outer shell 10 to prevent the slider 20 from disengaging from the slide rail 105 when the slider 20 slides into the avoidance space 104 of the outer shell 10. More preferably, the inner end 1052 of the slide rail 105 can extend to and abut against the side wall of the bottom shell boss 111 of the bottom shell 11.

[0083] Preferably, refer to the appendix Figures 4 to 8, a part of the avoidance space 104 of the housing 10 is formed in the bottom case 11, and another part is formed in the cover 12. Specifically, the side wall of the bottom case boss 111 of the bottom case 11 is recessed inward in the direction of the bottom case central hole 112 to form a part of the avoidance space 104 of the housing 10, and the side wall of the cover boss 121 of the cover 12 is recessed inward in the direction of the cover central hole 122 to form another part of the avoidance space 104 of the housing 10. In this way, the bottom case boss 111 of the bottom case 11 and the cover boss 121 of the cover 12 can simultaneously avoid the slider 20. By this means, the slider 20 is allowed to have a larger stroke range, so that the swing arm 30 can swing within a larger swing range, and further adjust the load of the flywheel 400 within a larger load range.

[0084] Continue to refer to the appendix Figures 1 to 11B , the internal magnetic control device 100 further includes a driving unit 80, which is disposed in the housing space 102 of the housing 10 for driving the slider 20 to slide along the track formed by the slide rail 105 of the housing 10.

[0085] Specifically, the driving unit 80 includes a driving motor 81 and a set of reduction gears 82. The driving motor 81 is fixedly disposed on the bottom case 11. Opposite sides of the set of reduction gears 82 are respectively rotatably disposed on the bottom case 11 and the cover 12, and one of the reduction gears 82 in the set of reduction gears 82 is drivably engaged with an output shaft 811 of the driving motor 81. A row of driven teeth 24 is formed on a side portion of the slider body 22 of the slider 20, and another one of the reduction gears 82 in the set of reduction gears 82 is engaged with the driven teeth 24 of the slider 20.

[0086] When the driving motor 81 rotates in one direction with the output shaft 811 of the driving motor 81 to output power, the power can be transmitted to the slider 20 through the set of reduction gears 82 to drive the slider 20 to slide along the track formed by the slide rail 105 of the housing 10 from the outer end 1051 of the slide rail 105 towards the inner end 1052. Correspondingly, when the driving motor 81 rotates in the other direction with the output shaft 811 of the driving motor 81 to output power, the power can be transmitted to the slider 20 through the set of reduction gears 82 to drive the slider 20 to slide along the track formed by the slide rail 105 of the housing 10 from the inner end 1052 of the slide rail 105 towards the outer end 1051.

[0087] It is worth mentioning that the type of the driving motor 81 is not limited in the internal magnetic control device 100 of the present invention. For example, the driving motor 81 can be, but is not limited to, a stepper motor or a servo motor.

[0088] Continue to refer to the attached Figures 1 to 11B , the bottom case 11 further has a bottom case ring 116 and a bottom case notch 117 defined by the bottom case ring 116, the shell cover 12 further has a shell cover ring 126 and a shell cover notch 127 defined by the shell cover ring 126. After the bottom case 11 and the shell cover 12 are installed, the bottom case ring 116 of the bottom case 11 and the shell cover ring 126 of the shell cover 12 abut against each other to divide the housing space 102 into an inner space 1021 and an outer space 1022, and the bottom case notch 117 of the bottom case 11 and the shell cover notch 127 of the shell cover 12 correspond to each other to form a moving channel 1023, the moving channel 1023 communicates the inner space 1021 and the outer space 1022, wherein the slide rail 105 is located in the inner space 1021 to allow the slider 20 to slide in the inner space 1021, wherein the swing arm 30 is swingably held in the outer space 1022, wherein the connecting rod 40 extends from the inner space 1021 through the moving channel 1023 to the outer space 1022, so that opposite ends of the connecting rod 40 can be rotatably installed on the driven ends 32 of the slider 20 and the swing arm 30.

[0089] Continue to refer to the attached Figures 1 to 11B , the internal magnetic control device 100 further includes a potential control unit 90, the potential control unit 90 includes a circuit board 91 and a slide potentiometer 92, wherein the circuit board 91 is installed on the bottom case 11 and held in the housing space 102 of the outer shell 10, wherein the slide potentiometer 92 further includes a potentiometer body 921 and a slide arm 922 slidably disposed on the potentiometer body 921, the potentiometer body 921 is mounted or welded to the circuit board 91, and the slide arm 922 is installed on the slider 20. When the slider 20 is driven to move along the slide rail 105 of the outer shell 10, the slider 20 drives the slide arm 922 to move relative to the potentiometer body 921, thus changing the resistance value of the slide potentiometer 92.

[0090] It is worth mentioning that the way the sliding arm 922 of the sliding potentiometer 92 is installed on the slider 20 is not limited in the inner magnetic control device 100 of the present invention. For example, the slider 20 may have a mounting groove 25, where the sliding arm 922 of the sliding potentiometer 92 extends to and is held in the mounting groove 25 of the slider 20, thus installing the sliding arm 922 of the sliding potentiometer 92 on the slider 20.

[0091] It can be understood that the resistance value of the sliding potentiometer 92 is related to the position of the slider 20 on the slide rail 105 of the housing 10, and the position of the slider 20 on the slide rail 105 of the housing 10 determines the position of the magnetic element 50, and further determines the load when the flywheel 400 is driven to rotate. In other words, the position of the magnetic element 50 of the inner magnetic control device 100 of the present invention and the load when the flywheel 400 is driven to rotate can be determined by detecting the resistance value of the sliding potentiometer 92.

[0092] However, due to the errors inherent in the sliding potentiometer 92 itself, as well as the mounting errors of the potentiometer body 921 of the sliding potentiometer 92 and the mounting error of the sliding arm 922, when mass-producing the inner magnetic control device 100 of the present invention, there are errors in the starting point and the ending point of the resistance values of the sliding potentiometers 92 of a batch of the inner magnetic control devices 100, and the error range is usually between 0% and 5%. This results in an error range of the starting point and the ending point of the positions of the magnetic elements 50 of a batch of the inner magnetic control devices 100 also being between 0% and 5%, and finally causes the magnetic group resistance difference of a batch of the inner magnetic control devices 100 to reach 10% - 20%, thus resulting in poor consistency of a batch of the inner magnetic control devices 100. Therefore, in order to ensure the resistance values of a batch of the inner magnetic control devices 100, after the potentiometer body 921 of the sliding potentiometer 921 is mounted on the circuit board 91 and the sliding arm 922 is installed on the slider 20, it is necessary to test and calibrate the sliding potentiometer 921.

[0093] The potential control unit 90 of the inner magnetic control device 100 of the present invention further includes a calibration potentiometer 93. The calibration potentiometer 93 is mounted on the circuit board 91, and the calibration potentiometer 93 is connected in series with the sliding potentiometer 92. By adjusting the calibration potentiometer 93, the initial position of the resistance value of the inner magnetic control device 100 can be calibrated. Optionally, in other examples of the inner magnetic control device 100 of the present invention, the calibration potentiometer 93 and the sliding potentiometer 92 may be connected in parallel, so that by adjusting the calibration potentiometer 93, the initial position of the resistance value of the inner magnetic control device 100 can be calibrated.

[0094] Furthermore, the housing 10 has a calibration channel 14 formed in the housing cover 12, and the calibration potentiometer 93 is arranged corresponding to the calibration channel 14. Thus, without disassembling the internal magnetron device 100, the initial resistance position of the internal magnetron device 100 can be calibrated through the calibration channel 14 of the housing 10, so as to greatly improve the resistance calibration efficiency and production efficiency of the internal magnetron device 100. Specifically, on the outer side of the housing 10, a simple tool (such as a screwdriver) can be used to calibrate the initial resistance position of the internal magnetron device 100 by rotating the calibration potentiometer 93. Preferably, the calibration potentiometer 93 extends to the calibration channel 14 of the housing 10.

[0095] Reference appendix Figure 12 The principle of the calibration potentiometer 93 calibrating the key position (such as the initial resistance position) of the internal magnetron device 100 is as follows: the slide potentiometer 92 and the calibration potentiometer 93 are connected in series, where parameter R1 is the slide potentiometer 92, parameter R2 is the calibration potentiometer 93, parameter A is the position where the slider 20 drives the sliding arm 922 to slide to the slide potentiometer 92 when the slider 20 slides to the outer end 1051 of the slide rail 105 of the housing 10, parameter B is the position where the slider 20 drives the sliding arm 922 to slide to the slide potentiometer 91 when the slider 20 slides to the inner end 1052 of the slide rail 105 of the housing 10, parameter R1A is the distance between point A and the sliding arm 922, parameter R1B is the distance between point B and the sliding arm 922, parameters R1A and R1B are dynamic and change with the change of the position where the sliding arm 922 slides on the slide potentiometer 92, and the value of parameter V0 changes with the change of the voltage division values of R1A and R1B.

[0096] For the internal magnetron device 100 not provided with the calibration potentiometer 93, the above parameters satisfy the conditions: Due to the error inherent in the slide potentiometer 92 itself, the mounting error of the potentiometer body 921 of the slide potentiometer 92, and the mounting error of the sliding arm 922, when mass-producing the internal magnetron device 100 of the present invention, there is an error in the value of V0, resulting in poor consistency of a batch of the internal magnetron devices 100.

[0097] For the internal magnetron device 100 provided with the calibration potentiometer 93, the above parameters satisfy the conditions: That is, V0’ = Δ + V0, where the resistance of the calibration potentiometer 93 is adjustable. For example, the resistance of the calibration potentiometer 93 can be adjusted by turning the calibration potentiometer 93 outside the housing 10 through the calibration channel 14 of the housing 10, that is, adjusting the value of the parameter △, so as to conveniently calibrate the initial resistance position of the internal magnetron device 100 and ensure the consistency of a batch of the internal magnetron devices 100.

[0098] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the drawings are only examples and do not limit the present invention. The object of the present invention has been fully and effectively achieved. The function and structural principle of the present invention have been shown and described in the embodiments. Without departing from the principle, any deformation or modification can be made to the embodiments of the present invention.

Claims

1. An internal magnetic control device, characterized in that, Comprising: A slider, wherein the slider includes a slider body, two slider arms and has a saddle groove, and the two slider arms respectively extend integrally downward from one side of the slider body to form the saddle groove between the slider body and the two slider arms; At least one connecting rod; At least one set of magnetic elements; At least one swing arm, wherein the swing arm has a pivot end and a driven end corresponding to the pivot end, and one set of the magnetic elements is arranged on the outer side of the swing arm, and opposite ends of the connecting rod are respectively rotatably mounted on the driven end of the swing arm and the slider; A housing, wherein the housing has a central through hole, a housing space, a peripheral opening, an avoidance space, a calibration channel and a slide rail, the housing space is located outside the central through hole, the peripheral opening communicates with the housing space, the avoidance space extends from the housing space towards the central through hole, the extending direction of the slide rail is consistent with the radial direction of the housing, and the outer end of the slide rail faces the edge direction of the housing, the inner end of the slide rail extends towards the avoidance space, wherein the pivot end of the swing arm is rotatably mounted on the edge of the housing, the slide rail extends to the saddle groove of the slider, and the slider is slidably mounted on the slide rail in such a manner that the slider straddles the slide rail, the slider body is attached to the top surface of the slide rail, each slider arm is respectively attached to each side surface of the slide rail, and at least a part of the slider is allowed to slide into the avoidance space of the housing; and A potential control unit, wherein the potential control unit includes a circuit board, a slide potentiometer and a calibration potentiometer, the circuit board is fixedly mounted on the housing and held in the housing space, the slide potentiometer includes a potentiometer body and a slide arm slidably mounted on the potentiometer body, the potentiometer body is mounted on the circuit board, the slide arm is mounted on the slider, the calibration potentiometer is mounted on the circuit board and connected to the potentiometer body, and corresponds to the calibration channel to allow calibration of the resistance value of the calibration potentiometer inside the internal magnetic control device outside the internal magnetic control device without disassembling the internal magnetic control device.

2. The internal magnetic control device according to claim 1, wherein the slide rail extends to the avoidance space.

3. The internal magnetic control device according to claim 1, wherein the stroke of the slider is greater than 12 mm.

4. The internal magnetic control device according to any one of claims 1 to 3, wherein the internal magnetic control device includes two connecting rods, two sets of magnetic elements and two swing arms, the pivot ends of the two swing arms are adjacent, each set of magnetic elements is respectively arranged on the outer side of each swing arm, and opposite ends of each connecting rod are respectively rotatably mounted on the driven end of each swing arm and each side portion of the slider.

5. The internal magnetic control device according to claim 4, wherein the housing includes a bottom case and a case cover, the bottom case has a bottom case boss and a bottom case center hole formed in the bottom case boss, wherein the case cover has a case cover boss and a case cover center hole formed in the case cover boss, wherein the bottom case and the case cover are installed in such a way that the bottom case boss of the bottom case and the case cover boss of the case cover are mutually attached, so that the bottom case center hole of the bottom case and the case cover center hole of the case cover correspond to form the central perforation of the housing, and the housing space and the peripheral opening are formed between the bottom case and the case cover, wherein the side wall of the bottom case boss of the bottom case is recessed inward in the direction of the bottom case center hole to form the avoidance space of the housing.

6. The internal magnetic control device according to claim 4, wherein the housing includes a bottom case and a case cover, the bottom case has a bottom case boss and a bottom case center hole formed in the bottom case boss, wherein the case cover has a case cover boss and a case cover center hole formed in the case cover boss, wherein the bottom case and the case cover are installed in such a way that the bottom case boss of the bottom case and the case cover boss of the case cover are mutually attached, so that the bottom case center hole of the bottom case and the case cover center hole of the case cover correspond to form the central perforation of the housing, and the housing space and the peripheral opening are formed between the bottom case and the case cover, wherein the side wall of the bottom case boss of the bottom case is recessed inward in the direction of the bottom case center hole to form a part of the avoidance space of the housing, and the side wall of the case cover boss of the case cover is recessed inward in the direction of the case cover center hole to form another part of the avoidance space of the housing.

7. The internal magnetic control device according to any one of claims 1 to 3, wherein the calibration potentiometer and the sliding potentiometer are connected in parallel.

8. The internal magnetic control device according to claim 7, wherein the calibration potentiometer and the sliding potentiometer are connected in series.

9. The internal magnetic control device according to claim 5, wherein the housing further includes a series of support columns, the support columns include a bottom case support part and a case cover support part, the bottom case support part extends integrally outward from the edge of the bottom case, the case cover support part extends integrally outward from the edge of the case cover, and when the bottom case and the case cover are installed with each other, the bottom case support part and the case cover support part are in contact with each other.

10. A fitness equipment, characterized in that, Comprising: An equipment rack; A foot pedal device, wherein the foot pedal device is installed on the equipment rack in a treadable manner; A flywheel, wherein the flywheel is rotatably installed on the equipment rack and is drivingly connected to the foot pedal device; And The internal magnetic control device according to any one of claims 1 to 9, wherein a mounting shaft of the equipment rack is installed in the central perforation of the housing of the internal magnetic control device to install the internal magnetic control device on the equipment rack, and the flywheel surrounds the outside of the internal magnetic control device.

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