TW202210135A - High torque magnetic resistance brake device having advantages of easily controlling resistance and lowering maintenance costs - Google Patents

Abstract

A high torque magnetic resistance brake device is applied to a fitness equipment and comprises an external rotor disposed with a flywheel and an external ring body; at least two magnetic resistance mechanisms respectively disposed with a brake iron core, and an electromagnetic coil; a support rack for assembling the magnetic resistance mechanisms to allow it to form an included angle larger than 30 degrees and to provide an interval between the external edge of the brake iron core and the external ring body. While inputting a required torque and a trajectory of resistance curve, the control circuit unit inputs a proper current to the electromagnetic coil so that the brake iron core and the coupled rotating external ring body generate a vortex magnetic resistance to further form a reverse resistance for the external rotor. Since the magnetic ring has a high magnetic flux intensity and the included angle formed by the magnetic resistance mechanisms will enable its vortex magnetic resistance to reach the maximum torque. At the same time, the control circuit unit changes magnitude of the current according to the required resistance so as to improve the smoothness of the movement resistance. Therefore, the invention can achieve highly efficient movement loading and improve variability and comfort of movement.

Description

High Torque Magnetic Reluctance Brake Device

The present invention relates to a fitness equipment device, especially a high-torque magnetoresistive braking device in which a control circuit inputs a moderate current according to a set torque, so that a magnetoresistive mechanism with a specific angle and a flywheel coupled to rotate generate reverse resistance .

Press, many fitness sports equipment will be equipped with flywheels to increase the inertial force of rotation and can be used as a load to achieve the function of adjusting the load; Figure 1A shows the US No. 5,711,404 "Magnetic Magnetic Control Load Device" (MAGNETIC ADJUSTABLE LOADING DEVICE WITH EDDY CURRENT), its device includes: a flywheel 710 and a rotor composed of a metal conductor 720; its inner edge is provided with a stator 750 composed of a conductive magnet piece 751 and a permanent magnet 752, through the adjustment device 771 The free end of the magnet piece 751 is pulled to displace, thereby changing the gap d1 between the rotors 710, 720 and the stator 750, so that the magnetic flux density changes, so as to achieve the effect of continuously adjusting the load resistance; however, the adjusting device 771 adjusts the load resistance through manual operation. The function of automatically adjusting the load cannot be achieved, so the patent has the lack of insufficient automation.

In addition, in recent years, fitness equipments often use flywheels to install permanent magnets, and then use the armature as the stator to generate current in the stator coil, which is used as the power required for control and braking loads; "BRAKE DEVICE WITH A COMBINATION OF POWER-GENERATING AND EDDY-CURRENT MAGNETIC ESISTANCE", the device includes: the rotating wheel of sports equipment drives the flywheel 820 to rotate, and the flywheel 820 is pasted with the permanent magnet 821 and the stator core 830 forms a magnetic circuit, which makes the coil 831 generate current; the current is rectified and filtered to convert it into direct current, which is supplied to the control instrument and the brake core 850, so that the brake core 850 forms an eddy current (EDDY CURR-ENT), which in turn causes the flywheel 820. A reluctance effect; press, this kind of structure can achieve excellent motion effect, however, the output power of the generator is closely related to the rotation speed, because the rotation speed of the generator is limited by the reluctance, it does not play its due efficiency Furthermore, the mechanism is relatively complicated and the manufacturing cost is high, so it is not suitable to be installed on sports equipment with small or less control functions.

Press again, the adjustment load in Fig. 1A lacks automation, and the mechanism in Fig. 1B is not suitable for the needs of small and low-priced sports equipment; therefore, how to integrate the advantages of the two can not only simplify the mechanism, reduce the size, and reduce the manufacturing cost, but also The ability to reduce the kinetic energy load to supply small sports equipment has become the goal of the creator's creative research and development.

Therefore, the main purpose of the present invention is to provide an eddy current reluctance braking device which can be applied to small fitness sports equipment, and which can automatically adjust the reluctance load.

The secondary objective of the present invention is to provide a high torque reluctance braking device which can simplify the mechanism, thereby reduce the manufacturing cost and improve the load efficiency.

Another object of the present invention is to provide a magnetoresistive braking device that can load a desired resistance curve through a transmission port, thereby improving the motion variability and comfort.

In order to achieve the above purpose, the technical means adopted by the present invention include: a support frame, a rotating shaft, a transmission wheel, an outer rotor, at least two reluctance mechanisms, and a control circuit unit; wherein, the support frame has A front and a rear plate body are combined with a plurality of positioning rods, and the support frame is provided with a foot seat to be fixed on the frame body of the fitness equipment; the rotating shaft is pivoted on the support frame inside the shaft hole; the transmission wheel is pivotally connected to the rotating shaft and is located at the outer end of the support frame to receive the power transmitted by the fitness equipment; the outer rotor includes a flywheel and a magnetic conducting ring, the flywheel It is a disk body with a hub in the center, and the hub has a shaft hole to be sleeved on the rotating shaft. The magnetic conductive ring has a high magnetic flux density and is tightly sleeved on the periphery of the outer ring body of the flywheel. , and make the outer rotor be driven by the drive wheel to rotate; the reluctance mechanism individually includes a braking iron core, an electromagnetic coil, an input wire connecting the electromagnetic coil, and a front and rear bracket, the braking iron core There is an accommodating part for setting the electromagnetic coil, the front and rear brackets lock the brake core at the positioning holes of the inner and outer plates, so that the magnetic resistance mechanism is arranged on the magnetic conductive ring At the outer peripheral edge, an included angle greater than 30 degrees is formed with each other, and there is a magnetic field gap between the outer edge of the brake core and the magnetic conductive ring; the control circuit unit is built-in and assembled on the support frame The side, which at least includes a microprocessor, a DC control circuit, an input device for inputting a desired torque setting value, and a transmission port for loading the resistance curve, the control circuit unit is connected to a DC power supply and electrically connected to the input line of the electromagnetic coil.

In this way, the microprocessor will calculate the set value of its torque, generate a control signal to the DC control circuit, and then form a moderate current, and synchronously input it to the electromagnetic coil of the magnetoresistive mechanism, the current of the electromagnetic coil will be A magnetic field will be generated on the brake core through the principle of magnetoelectric conversion, and a closed magnetic circuit will be formed between this magnetic field and the coupled rotating magnetic permeable ring; since the outer rotor is in a rotating state, this closed magnetic circuit will be affected by According to Lenz's law, when a stable magnetic circuit is damaged by an external force, a reverse resistance of the same size will be generated to resist, thereby achieving the effect of the desired motion load, and by selecting the desired resistance curve Figure, will increase the variability of the movement and improve the comfort of the movement accordingly.

According to the aforementioned features, in the present invention, the included angle of the two magnetoresistive mechanisms is greater than 30 and less than 90 degrees; moreover, the included angle of the two magnetoresistive mechanisms is greater than 90 and less than 180 degrees.

According to the aforementioned features, the transmission wheel in the present invention is a pulley.

With the help of the aforementioned features, the advantages of the "high torque reluctance braking device" of the present invention are: (1) In the present invention, the outer rotor is driven by the drive wheel to rotate, and it has a flywheel that provides inertial rotation and a magnetic ring with high magnetic flux density; the magnetic resistance mechanism is arranged on the outer periphery of the magnetic ring. At the edge, it has a braking iron core and an electromagnetic coil, and the outer edge of the braking iron core and the magnetic conducting ring have a magnetic field gap, so as to generate a magnetoresistive effect; the present invention is provided with an input device, which can be used for inputting desired The torque value of the DC control circuit will accordingly generate a moderate current, which is input to the electromagnetic coil to form the required motion resistance; because the stator coil and AC/DC conversion components required for power generation are not provided in the present invention, Therefore, it is possible to simplify the mechanism, reduce the volume, reduce the manufacturing cost, and make it applicable to small fitness sports equipment; at the same time, the present invention controls the magnetoresistive load by the magnitude of the current applied to the electromagnetic coil, because the mechanism is non-contact Therefore, the present invention also has the advantages of easy control of resistance, no wear of components and low maintenance cost. (2) The outer rotor of the present invention includes a flywheel that provides inertial rotation and a magnetically permeable ring with high magnetic flux density, the magnetically permeable ring is tightly sleeved on the periphery of the flywheel, and the outer rotor will be driven by the transmission wheel. Drive and rotate; two magnetoresistance mechanisms are arranged at the outer periphery of the magnetic conducting ring, and there is a magnetic field gap between the outer edge of the brake core and the magnetizing conducting ring; because a moderate current is input into the electromagnetic field of the magnetoresistive mechanism coil, the current will generate a magnetic field on the brake core, and according to Lenz's law, this magnetic field will form an opposite resistance between the magnetic conductive ring and the coupled rotating magnetic conductive ring; due to the high magnetic flux density of the magnetic conductive ring, Moreover, the reluctance mechanisms form an included angle greater than 30 and less than 180 degrees with each other, the magnetic lines of force of the brake core will not interfere with each other, and the eddy current reluctance will reach the highest torque, so the present invention can achieve the effect of high-efficiency motion load . (3) The present invention is provided with an input device and a transmission port, which can input the desired torque setting value and load the software of the resistance curve graph; when the user inputs the torque condition, the microprocessor of the control circuit unit will refer to the After the trajectory of the resistance curve and the torque setting value, a moderate current is generated to the electromagnetic coil of the reluctance mechanism, and an eddy current reluctance will be generated between the brake iron core and the coupled rotating magnetic ring, and then the outer rotor will be form an opposite resistance. Because the graph of the resistance curve allows the user to obtain a sense of the smoothness of the resistance at different levels of difficulty, it can not only improve the comfort but also avoid the injury caused by the movement caused by the sudden resistance change; therefore, the present invention can allow the user to choose the transmission port through the transmission port The desired resistance curve, thereby increasing the variability and comfort of the movement.

The following description takes the drawings as examples, but is not limited thereto. The present invention can be implemented in other embodiments, and well-known steps or elements are not described in detail to avoid unnecessary limitations on the present invention. . It should be noted that the drawings are for illustrative purposes only, and do not represent the actual size or number of components, and some details may not be fully drawn for the sake of simplicity in the drawings.

First, please refer to FIG. 2 , which is the structure of the “high torque magnetic resistance braking device” 100 of the present invention, which includes: a support frame 10 , which is assembled from inner and outer plate bodies 11 and 12 . A shaft hole 13 is provided. The shaft hole 13 is surrounded by a plurality of equidistant positioning holes 14. The lower ends of the inner and outer plates 11 and 12 are respectively provided with a foot seat 15. The frame 10 is fixed on the frame body of the fitness sports equipment; a plurality of positioning rods 17, each of which is locked in the positioning hole 14 with a nut, so that the inner and outer plate bodies 11, 12 are integrated into one; An outer rotor 20 includes a flywheel 21 and a magnetically permeable ring 22; the flywheel 21 provides an inertial rotating disk body, has an outer ring body 211 and an inner side wall 212, and the center of the inner side wall 212 is A hub 214 with a shaft hole 213 is formed; a rotating shaft 30 is inserted into the shaft hole 213, and a key block 215 is embedded in the middle part to make the rotating shaft 30 rotate synchronously with the flywheel 21; a transmission wheel 40 is connected to the A one-way bearing 31 is sleeved on one end of the rotating shaft 30 for unidirectionally receiving the power transmitted by the fitness equipment. In the present invention, the transmission wheel 40 is a pulley; the rotating shaft 30 is located at the hub of the flywheel 21 On both sides of 214, a ball bearing 32 is sleeved on each, and a bearing seat 33 is sleeved on the outer periphery of the ball bearing 32, and the bearing seats 33 on the front and rear sides are respectively locked on the shafts of the inner and outer plates 11 and 12. inside hole 13.

On top of that, at least two reluctance mechanisms 50 individually include a braking iron core 51, an electromagnetic coil 52, an input wire 53 connected to the electromagnetic coil, and front and rear brackets 54, 55. The braking iron core 51 is provided with a The accommodating portion in the shape of a mountain-shaped depression is used to set the electromagnetic coil 52; the front and rear brackets 54 and 55 are placed on the front and rear sides of the brake iron core 51, and bolts are inserted through the brake iron core 51. Through holes, the front and rear brackets 54, 55 are then locked at the positioning holes 14 of the inner and outer plates 11, 12; in the present invention, in order to prevent the magnetic lines of force of the brake cores 51 of the two reluctance mechanisms 50 from interfering with each other , and to make the eddy current reluctance reach the highest torque, when the two reluctance mechanisms 50 are arranged at the outer periphery of the magnetic permeable ring 22, the angle θ between them should be set to be greater than 30 and less than 180 degrees; at the same time, it is To produce a magnetoresistive effect, the outer edge of the brake core 51 installed in the front and rear brackets 54 and 55 needs to form a magnetic field gap G with the outer peripheral surface of the magnetic conducting ring; the first embodiment of the present invention is a The angle θ between the two magnetoresistive mechanisms 50 is set to be greater than 30 and less than 90 degrees, as shown in FIGS. 3-6 ; in the second embodiment, the angle θ between the two magnetoresistive mechanisms 50 is set greater than 90 and less than 180 degrees, such as As shown in FIGS. 10-11 , the included angle θ is set to be greater than the limit of 30 degrees, which not only avoids the phenomenon that the magnetic lines of force of the brake cores 51 of the two reluctance mechanisms 50 interfere with each other, but also produces the same torque under the premise of producing the same torque. The two magnetoresistive mechanisms 50 can distribute the magnetoresistive effect at two parts of the outer periphery of the magnetic permeable ring 22 . Compared with the one magnetoresistive mechanism 50 , the magnetoresistive effect can be concentrated at one part of the outer periphery of the magnetically permeable ring 22 , so that the outer Rotation of the rotor 20 produces less yaw thereby increasing its useful life.

7 shows the structure of the outer rotor 20 in the present invention; the outer rotor 20 includes a flywheel 21 and a magnetic permeable ring 22; the flywheel 21 has an outer ring body 211 and an inner side wall 212, and A hub 214 with a shaft hole 213 is formed at the center of the inner side wall 212; the shaft hole 213 is provided with a key groove 216, when the shaft hole 213 is sleeved on the rotating shaft 30, a key block 215 is embedded in the key groove 216, The rotating shaft 30 and the flywheel 21 are rotated synchronously; the magnetic permeable ring 22 is made of a material with high magnetic flux density. In the present invention, the magnetic permeable ring 22 is made of carbon steel with a carbon content of 0.15-0.25% Furthermore, the magnetic conductive ring 22 is sleeved on the outer periphery of the outer ring body 211 of the flywheel 21 made of cast iron in a tight fit, or the magnetic conductive ring 22 is directly formed on the outer ring body It is formed from the periphery of 211, and it achieves the function of generating a closed magnetic circuit with the electromagnetic coil 52 through the magnetic permeability of its own material; The main purpose is to increase the magnetic flux density of the outer rotor 20 and to generate a larger eddy current reluctance with the brake core 51 of the reluctance mechanism 50 without increasing the material cost too much; The selection of the material of the ring 22 and the manner in which the magnetic conducting ring 22 is sleeved on the periphery of the flywheel 21 are not limited to this.

Please further refer to FIG. 8 , which is the structural configuration state of the first embodiment of the present invention, including a control circuit unit 60 , which is assembled on the side of the support frame 10 in a built-in form, and at least includes a microprocessor A controller 61, a DC control circuit 62, an input device 63 for inputting a desired torque setting value, and a transmission port 64 for loading a resistance curve; the present invention applies force through the user's movement to drive the equipment on the The transmission mechanism A is connected to the transmission wheel 40 (pulley) to make the outer rotor 20 rotate. When the user inputs the desired motion torque value from the input device 63 and selects the desired resistance curve from the transmission port 64, the microprocessor 61 refers to the trajectory of the resistance curve and the torque setting value, and then sends out the correct torque value. The control signal is sent to the DC control circuit 62, so that it generates a moderate current and is input to the input line 53 of the two magnetoresistive mechanisms 50 synchronously, then the current of the electromagnetic coil 52 will generate a magnetic field on the brake core 51 through the principle of magnetoelectric conversion. , a closed magnetic circuit is formed between this magnetic field and the coupled rotating magnetic permeable ring 22; since the outer rotor 20 is in a rotating state, this closed magnetic circuit will be destroyed, and according to Lenz's law, when a stable When the magnetic circuit is damaged by an external force, a force of the same size and opposite direction will be generated to resist, and this force will form the resistance required on the fitness equipment, and the microprocessor 61 will continue to refer to its torque setting conditions, through this force The DC control circuit 62 adjusts the current of the electromagnetic coil 52 so that the resistance value is equal to the set value input by the user, thereby achieving the desired effect of the moving load.

Figure 9 is a schematic diagram of the resistance curve of the exercise. The resistance curve has many graphs of different difficulty, but basically, the resistance is set to the initial stage, the gradual increase stage, and the control torque stage; when the initial stage, its input The current remains unchanged, the input current will linearly increase its resistance in the step-by-step increase stage, while in the control torque stage, the input current will be automatically adjusted according to the torque setting conditions; press, the graph of the resistance curve allows the user to obtain the resistance of different difficulties. The feeling of stability can not only improve the comfort but also avoid the injury caused by the rapid resistance change. Therefore, the present invention allows the user to select the desired resistance curve through the transmission port, thereby increasing the variability of the movement.

According to the present invention, the outer rotor 20 is driven by the transmission wheel 40 to rotate, and it has a flywheel 21 for providing inertial rotation and a magnetic conducting ring 22 with high magnetic flux density; the magnetic resistance mechanism 50 is arranged on the guiding At the outer peripheral edge of the magnetic ring 22, it has a braking iron core 51 and an electromagnetic coil 52, and the outer edge of the braking iron core 51 and the magnetic conducting ring 22 have a magnetic field gap G, so as to generate a magnetic resistance effect; the present invention An input device 63 is provided, which can input the desired torque value, and the DC control circuit 62 will generate a moderate current according to it, which is input to the electromagnetic coil 52 to form the required motion resistance; since no power generation is provided in the present invention The required stator coils and AC/DC conversion components can simplify the mechanism, reduce the volume, reduce the manufacturing cost, and make it applicable to small fitness equipment; at the same time, the present invention uses the current applied to the electromagnetic coil 52 The magnetoresistive load is controlled by the size of the device. Since the mechanism is a non-contact resistance device, the present invention also has the advantages of easy resistance control, no wear on components and low maintenance cost.

Next, the outer rotor 20 of the present invention includes a flywheel 21 for providing inertial rotation and a magnetic permeable ring 22 with high magnetic flux density. The magnetic permeable ring 22 is tightly sleeved on the periphery of the flywheel 21, and the outer The rotor 20 will be driven by the transmission wheel 40 to rotate; the two reluctance mechanisms 50 are arranged at the outer periphery of the magnetically permeable ring 22, and the outer edge of the brake iron core 51 and the magnetically permeable ring 22 have a magnetic field gap G; due to a A moderate current is input into the electromagnetic coil 52 of the magnetoresistive mechanism 50, and the current will generate a magnetic field on the brake core 51, and according to Lenz's law, this magnetic field will be formed between the coupled rotating magnetic conducting ring 22 A reverse resistance; due to the high magnetic flux density of the magnetic conductive ring 22, and the two reluctance mechanisms 50 form an included angle θ greater than 30 and less than 180 degrees with each other, the magnetic lines of force of the brake core 51 will not interfere with each other, and the eddy current The reluctance will reach the highest torque, so the present invention can achieve the effect of high-efficiency motion load.

Next, the present invention is provided with an input device 63 and a transmission port 64, which can be used to input the desired torque setting value and load the software of the resistance curve graph; after the user inputs the torque condition, the microprocessor of the control circuit unit 60 is controlled. The device 61 refers to the trajectory of the resistance curve and the torque setting value, and then generates a moderate current to the electromagnetic coil 52 of the reluctance mechanism 50, and the brake iron core 51 will generate a coupling between the magnetic conductive ring 22 and the rotating magnetic ring 22. An eddy current reluctance, thereby forming a reverse resistance to the outer rotor 20 . Since the graph of the resistance curve allows the user to obtain a sense of the smoothness of the resistance at different levels of difficulty, it can not only improve the comfort but also avoid the injury caused by the movement caused by the sudden resistance change; therefore, the present invention can use the transmission port 64 to allow the user to Select the desired resistance profile to increase exercise variability and comfort.

To sum up, the technical means disclosed in the present invention are indeed "novel" and "progressive". The requirements for invention patents such as "industrial nature" and "available for industrial use", please pray to the Jun Bureau to grant patents to encourage inventions without any sense of morality.

However, the drawings and descriptions disclosed above are only preferred embodiments of the present invention. Modifications or equivalent changes made in accordance with the spirit and scope of this case by those familiar with the art should still be included in the scope of the patent application in this case.

10: Support frame 11: Inner board body 12: Outer body 13: Shaft hole 14: Positioning hole 15: Foot seat 16: Slotted hole 17: Positioning rod 20: Outer rotor 21: Flywheel 211: outer ring body 212: Inner Wall 213: Shaft hole 214: Wheels 215:Keyblock 22: Magnetic ring 30: Rotation shaft 31: One-way bearing 32: Ball bearing 33: Bearing seat 40: Transmission wheel 50: Magnetoresistive mechanism 51: Brake Core 52: Solenoid coil 53: Input line 54: Front bracket 55: Rear bracket 60: Control circuit unit 61: Microprocessor 62: DC control circuit 63: Input device 64: Transmission port 100: High torque reluctance braking device A: Transmission mechanism G: Magnetic Field Gap θ: included angle

FIG. 1A is a schematic diagram of the mechanism of a conventional eddy current magnetron load device. FIG. 1B is a schematic diagram of the mechanism of a conventional hybrid braking device of power generation and eddy current reluctance. FIG. 2 is an exploded perspective view of the structure of the present invention. FIG. 3 is a combined perspective view of the first embodiment of the present invention from a front view angle. FIG. 4 is a combined perspective view of the first embodiment of the present invention from a rear view angle. FIG. 5 is a combined front view of the first embodiment of the present invention from a front view angle. Figure 6 is a cross-sectional view of the assembly of the present invention. FIG. 7 is a perspective view of the structure of the outer rotor in the present invention. FIG. 8 is a schematic structural diagram of the first embodiment of the present invention. FIG. 9 is a schematic diagram of the loadable resistance curve trajectory in the present invention. FIG. 10 is a combined perspective view of the second embodiment of the present invention. FIG. 11 is an assembled front view of the second embodiment of the present invention.

10: Support frame

11: Inner board body

16: Slotted hole

17: Positioning rod

20: Outer rotor

21: Flywheel

22: Magnetic ring

30: Rotation shaft

40: Transmission wheel

50: Magnetoresistive mechanism

51: Brake Core

52: Solenoid coil

53: Input line

54: Front bracket

60: Control circuit unit

61: Microprocessor

62: DC control circuit

63: Input device

64: Transmission port

100: High torque reluctance braking device

A: Transmission mechanism

G: Magnetic Field Gap

θ: included angle

Claims (4)

A high-torque magnetic resistance braking device, which is applied to fitness sports equipment, includes: a support frame, which has a front and a rear plate body, which are combined into one body by a plurality of positioning rods, and the support frame is provided with a foot seat to be fixed on the frame body of the fitness equipment; a rotating shaft pivoted in the shaft hole of the support frame; a transmission wheel, pivotally connected to the rotating shaft and located at the outer end of the support frame, for receiving the power transmitted by the fitness equipment; An outer rotor includes a flywheel and a magnetic permeable ring, the flywheel is a disk body with a hub in the center, and the hub has a shaft hole to be sleeved on the rotating shaft, the magnetic permeable ring has a high magnetic flux density, It is tightly sleeved on the periphery of the outer ring body of the flywheel, and enables the outer rotor to be driven by the transmission wheel to rotate; At least two magnetoresistive mechanisms, each including a braking iron core, an electromagnetic coil, an input wire connected to the electromagnetic coil, and a front and rear brackets, the braking iron core is provided with an accommodating portion for sleeved with the electromagnetic coil , the front and rear brackets lock the brake core at the positioning holes of the inner and outer plates, so that the magnetoresistive mechanism is arranged at the outer periphery of the magnetic conducting ring, and is formed more than 30 degrees and an included angle less than 180 degrees, and there is a magnetic field gap between the outer edge of the brake core and the magnetic permeable ring; A control circuit unit is assembled on the side of the support frame in a built-in form, which at least includes a microprocessor, a DC control circuit, an input device for inputting a desired torque setting value, and a load The transmission port of the resistance curve diagram, the control circuit unit is connected to the DC power supply and is electrically connected to the input line of the electromagnetic coil; In this way, the microprocessor will calculate the set value of its torque, generate a control signal to the DC control circuit, and then form a moderate current, and synchronously input it to the electromagnetic coil of the magnetoresistive mechanism, the current of the electromagnetic coil will be A magnetic field will be generated on the brake core through the principle of magnetoelectric conversion, and a closed magnetic circuit will be formed between this magnetic field and the coupled rotating magnetic permeable ring; since the outer rotor is in a rotating state, this closed magnetic circuit will be affected by According to Lenz's law, when a stable magnetic circuit is damaged by an external force, a reverse resistance of the same size will be generated to resist, thereby achieving the effect of the desired motion load, and by selecting the desired resistance curve Figure, will increase the variability of the movement and improve the comfort of the movement accordingly. The high-torque magnetoresistive braking device as described in claim 1, wherein the included angle between the two magnetoresistive mechanisms is greater than 30 and less than 90 degrees. The high-torque magnetoresistive braking device as described in claim 1, wherein the included angle between the two magnetoresistive mechanisms is greater than 90 and less than 180 degrees. The high-torque reluctance braking device as described in claim 1, wherein the transmission pulley is a pulley.

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