CN203291439U

CN203291439U - Eddy current type damping mechanism

Info

Publication number: CN203291439U
Application number: CN2013202745236U
Authority: CN
Inventors: 陈侑郁
Original assignee: Direction Tech Co Ltd
Current assignee: Direction Tech Co Ltd
Priority date: 2013-05-20
Filing date: 2013-05-20
Publication date: 2013-11-20
Anticipated expiration: 2023-05-20

Abstract

An eddy current type damping mechanism is characterized in that a magnetic braking unit is arranged at the adjacent position of a metal ring made of non-magnetic conductive materials, the magnetic braking unit comprises a magnetic element bracket and a plurality of magnetic elements, a driving motor drives the magnetic element bracket to rotate through a transmission assembly, so that the magnetic elements are close to or far away from the metal ring, a magnetic force field is generated by the magnetic elements, then eddy current is generated on the metal ring, and a braking force is generated on a flywheel; the resistance adjustment effect can be more effectively maintained.

Description

The eddy current type damping mechanism

Technical field

The utility model is a kind of damping mechanism, espespecially is applied to the eddy current type damping mechanism of the flywheel of body-building apparatus.

Background technology

Traditional body-building apparatus, exercycle for example, the user is mainly by stepping on pedal, using set flywheel on the driving exercycle rotates, and can allow the user bear suitable resistance or drag in order to make while stepping on pedal, main by the mode of reluctance force at present, the adjustment of the different drag sizes of exercycle is provided.

Known technology is owing to pulling the arc plate body to use the spacing of adjusting between magnetite and metal resistance ring internal perisporium by steel wire, reach the size of adjusting suffered magnetic resistance strength, yet this type of the resistance structure not only comparatively huge and magnetic force of volume is affected by cast-iron wheel, structure too complexity can't accurately be calculated outside drag size, also be not easy to assembling, and manufacturing cost is also comparatively expensive.

Moreover, owing to mainly by the end at the arc plate body, carrying out the application of force and drawing, make magnetite correspond to the stroke distances of metal resistance ring larger, and the change in resistance that produces is affected by becket not only, also be subjected to the cast-iron wheel Effect of Materials, make the quantitative adjusting of resistance for the user and control more comparatively difficult.

Because the mode that adopts spring is adjusted the spacing between arc plate body and metal resistance ring, through the permanent rear spring of using, be easy to follow the string, and then the inefficacy that causes resistance to adjust.

The utility model content

The technical problem that the utility model solves is to provide a kind of eddy current type damping mechanism, can be applicable to body-building apparatus, structure is comparatively simple, be easy to the user and adjust drag size, and drag size is adjusted drag size according to magnet strength and becket size merely.

Technical solution of the present utility model is:

A kind of eddy current type damping mechanism wherein, includes:

One flywheel, take a rotating shaft as pivot and rotated by an additional driving force, this rotating shaft is combined with an axle bed;

One becket, be incorporated into this flywheel;

One bolster, have a rotating shaft binding end and an outboard end, and wherein this rotating shaft binding end is combined in this axle bed, and this outboard end extends to the close position of this becket, and is provided with an axostylus axostyle at this outboard end;

One magnetic brake unit, include a magnetic element support and a plurality of magnetic element, this magnetic element is incorporated into the outer ring surface of this magnetic element support and towards being adjacent to this becket, one end of this magnetic element support is free end, and the other end can be combined in the axostylus axostyle of the outboard end of this bolster rotationally;

One transmission component, be linked to this magnetic brake unit;

One CD-ROM drive motor, be linked to this transmission component, this CD-ROM drive motor drives this magnetic element support take the axostylus axostyle of the outboard end of this bolster as the pivot turn via this transmission component, the magnetic element of this magnetic brake unit is approached or away from this becket, by this magnetic element, produce a field of magnetic forece, then produce vortex flow and this flywheel is produced to a brake force in this becket.

Eddy current type damping mechanism as above, wherein, this transmission component includes:

One gear train, be incorporated into this CD-ROM drive motor, and by this CD-ROM drive motor driven rotary, this gear train has an output jack-post;

One rotates wheels, includes:

One inner circle wheel, this inner circle wheel has an eccentric pivot hole, is combined in this output jack-post of this gear train;

One cylindrical wheel, be set in the outer ring edge that this inner circle is taken turns, and this cylindrical wheel has one and links jack-post, is combined in rotationally the free end of this magnetic element support;

Wherein after this CD-ROM drive motor start, this inner circle wheel that drives these rotation wheels via this gear train rotates, this this inner circle wheel that rotates wheels drives this cylindrical wheel and rotates, make this links jack-post of this cylindrical wheel produce displacement, then the magnetic element support that is moved this magnetic brake unit by this connection shaft cornice approach or away from this becket take the axostylus axostyle of the outboard end of this bolster as pivot.

Eddy current type damping mechanism as above, wherein, this gear train includes:

One first gear, be meshed with a motor shaft of this CD-ROM drive motor;

One second gear, be positioned at the close position of this first gear and be engaged in this first gear;

One the 3rd gear, be engaged in this second gear, and the rotation take this output jack-post as axle center.

Eddy current type damping mechanism as above, wherein, this transmission component is combined with a cover plate.

Eddy current type damping mechanism as above, wherein, this becket is selected from the non-magnetic material of aluminium or copper.

Eddy current type damping mechanism as above, wherein, this magnetic element is selected from permanent magnet or electromagnet forms.

One driving wheel group includes:

One drive, have a central axis hole and the position output shaft hole at the close position of this central authorities' axis hole, and this central authorities' axis hole is combined in this output jack-post of this gear train, the rotation take this output jack-post as axle center;

One power transmission shaft, be combined in this output shaft hole of this drive, and this power transmission shaft has a transmission jack-post, can be combined in rotationally the free end of this magnetic element support;

Wherein after this CD-ROM drive motor start, this drive that drives this driving wheel group via this gear train rotates, this drive of this driving wheel group drives this drive shaft displacement, then the magnetic element support that is driven this magnetic brake unit by this power transmission shaft approaches take the axostylus axostyle of the outboard end of this bolster as pivot or away from this becket.

Eddy current type damping mechanism as above, wherein, this drive is combined with a circuit board in order to the displacement that reads this magnetic brake unit.

Eddy current type damping mechanism as above, wherein, this gear train is combined with a variable resistor in order to the displacement that reads this magnetic brake unit.

One first gear, be meshed with a motor shaft of this CD-ROM drive motor;

Eddy current type damping mechanism as above, wherein, this CD-ROM drive motor is combined with a generating set, and this generating set is surrounded by:

One rotor, in conjunction with being fixed on this flywheel, and be subjected to this flywheel driven rotary;

One stator, in conjunction with the close position of this rotating shaft that is fixed on this flywheel, and correspond to this rotor;

One power coil group, winding are at this stator, and when this rotor was subjected to this flywheel driven rotary, a pair of power output end of this power coil group was electrically connected to this CD-ROM drive motor, to supply a power for operation to this CD-ROM drive motor.

Eddy current type damping mechanism as above, wherein, this becket is comprised of a plurality of arc metal plate, between adjacent two arc metal plates, forms a spacing is arranged.

Eddy current type damping mechanism as above wherein, more includes:

At least one vortex flow that produces at this becket in order to this magnetic brake unit of sensing, and produce a corresponding faradic induction coil, be configured in the adjacent position of this becket;

The one faradic induction treating apparatus that produces in order to receive this induction coil, be connected in this induction coil.

Eddy current type damping mechanism as above, wherein, this induction treating apparatus includes:

One rectifying and wave-filtering module, be electrically connected to this induction coil, receives this induced-current, and carry out the laggard line output of processing of a rectification and filtering;

One A/D conversion module, be electrically connected on this rectifying and wave-filtering module, receives the induced-current after this rectifying and wave-filtering module is processed, and conversion process is exported after becoming a numerical digit signal;

One processes module, with this A/D conversion module, is electrically connected to, in order to receive and to process this numerical digit signal.

The utility model is for to dispose a magnetic brake unit at a close position with the made becket of non-magnetic material, the magnetic brake unit includes a magnetic element support and a plurality of magnetic element, CD-ROM drive motor drives the turn of magnetic element support via transmission component, magnetic element is approached or away from becket, by magnetic element, produce a field of magnetic forece, then produce eddy current and flywheel is produced to a brake force in becket.

Magnetic element of the present utility model produces resistance mainly for the interaction of becket, but not produce for flywheel, therefore when flywheel is static or rotate extremely slowly, by any drag effect of unlikely generation, for rehabilitation person, when using flywheel to carry out rehabilitation, can avoid flywheel because producing excessive initial torque (Initial Torque), to cause user's athletic injury when initial rotation.

The advantage of the utility model eddy current type damping mechanism includes:

(1) flywheel, when static or extremely slow rotation, can produce resistance hardly.

(2) has extremely low initial torque (Initial Torque).

(3) volume is little, unlikelyly takies the excessive space that arranges.

(4) one-piece parts and assembly are relatively less, can save production cost.

(5) do not need to apply to spring, therefore structure is also comparatively simple comparatively speaking.

The accompanying drawing explanation

Fig. 1 shows the decomposed figure of the utility model the first embodiment.

Fig. 2 shows the constitutional diagram of the utility model the first embodiment.

Fig. 3 shows the part-structure exploded view of the utility model the first embodiment.

Fig. 4 shows the part-structure constitutional diagram of the utility model the first embodiment.

Fig. 5 shows the part-structure top view of the utility model the first embodiment.

Fig. 6 shows the decomposed figure of the utility model the second embodiment.

Fig. 7 shows the constitutional diagram of the utility model the second embodiment.

Fig. 8 shows the decomposed figure of the utility model the 3rd embodiment.

Fig. 9 shows the constitutional diagram of the utility model the 3rd embodiment.

Figure 10 shows that the stator of generating set is arranged with the structural representation of an electric coil group.

Figure 11 shows the structural representation of the utility model the 4th embodiment.

Figure 12 shows that the stator of the generating set of the utility model the 4th embodiment is arranged with the structural representation of an electric coil group.

Figure 13 shows the induced electromotive force signal schematic diagram of the utility model the 4th embodiment.

Figure 14 shows the induction treating apparatus block diagram of the utility model the 4th embodiment.

The main element label declaration:

1 flywheel

11 rotating shafts

12 axle beds

2 beckets

The 2a becket

The 21a arc metal plate

3 bolsters

31 rotating shaft binding ends

32 outboard ends

321 axostylus axostyles

33 cover plates

The 33a cover plate

34 fixed supports

4 magnetic brake units

41 magnetic element supports

411 outer ring surfaces

412 free ends

42 magnetic elements

5 transmission components

51 gear trains

511 output jack-posts

512 first gears

513 second gears

514 the 3rd gears

52 rotate wheels

521 inner circle wheels

The 521a eccentric pivot hole

The 521b outer ring edge

522 cylindrical wheels

522a links jack-post

53 driving wheel group

531 drives

531a central authorities axis hole

The 531b output shaft hole

532 power transmission shafts

532a transmission jack-post

54 circuit boards

55 variable resistors

6 CD-ROM drive motors

61 motor shafts

7 generating sets

71 rotors

72 stators

73 power coil groups

731 power output ends

The 7a generating set

The 71a rotor

The 72a stator

73a power coil group

The 731a power output end

8 induction coils

81 induction treating apparatus

811 rectifying and wave-filtering modules

812 A/D conversion modules

813 process module

814 show module

The ti time span

The tj time span

The specific embodiment

For technical characterictic of the present utility model, purpose and effect being had more clearly, understand, now contrast the accompanying drawing explanation specific embodiment of the present utility model.

Refer to Fig. 1 to Fig. 5, eddy current type damping mechanism of the present utility model is mainly used on the flywheel 1 of a sports equipment, uses so that flywheel 1 can produce suitable resistance when start, so that the user to be provided suitable exercise intensity.

The utility model eddy current type Yang Ni mechanism includes a flywheel 1, a becket 2, a bolster 3, a magnetic brake unit 4, a transmission component 5 and a CD-ROM drive motor 6.Flywheel 1 is take a rotating shaft 11 as pivot and rotated by an additional driving force, and rotating shaft 11 is combined with an axle bed 12, and becket 2 is incorporated into flywheel 1.Wherein, becket 2 is selected from the non-magnetic material of aluminium or copper.

Bolster 3 has a rotating shaft binding end 31 and an outboard end 32, and its shaft binding end 31 is combined in axle bed 12, and outboard end 32 extends to the close position of becket 2, and is provided with an axostylus axostyle 321 at outboard end 32.One cover plate 33 is incorporated into bolster 3.

Magnetic brake unit 4 includes a magnetic element support 41 and a plurality of magnetic element 42, magnetic element 42 for a plurality of N, S polarity is staggered and be incorporated into the outer ring surface 411 of magnetic element support 41 and towards being adjacent to becket 2 with an arc shooting, one end of magnetic element support 41 is free end 412, and the other end is combined in the axostylus axostyle 321 of the outboard end 32 of bolster 3 rotationally.Wherein, magnetic element 42 is selected from permanent magnet or electromagnet forms.

Transmission component 5 is linked to magnetic brake unit 4, and CD-ROM drive motor 6 is linked to transmission component 5.CD-ROM drive motor 6 drives magnetic element supports 41 take the axostylus axostyle 321 of the outboard end 32 of bolster 3 as the pivot turn via transmission component 5, the magnetic element 42 of magnetic brake unit 4 is approached or away from becket 2, by magnetic element 42, produce a field of magnetic forece, then produce eddy current and flywheel 1 is produced to a brake force in becket 2.

Wherein transmission component 5 includes a gear train 51 and and rotates wheels 52.Gear train 51 is incorporated into CD-ROM drive motor 6, and by CD-ROM drive motor 6 driven rotary, gear train 51 includes an output jack-post 511, one first gear 512, one second gear 513 and one the 3rd gear 514.

The first gear 512 is meshed with a motor shaft 61 of CD-ROM drive motor 6, and the second gear 513 is positioned at the close position of the first gear 512 and is engaged in the first gear 512, the three gears 514 and is engaged in the second gear 513, and take output jack-post 511 as the axle center rotation.

Rotate wheels 52 and include inner circle wheel 521 and one a cylindrical wheel 522.Inner circle wheel 521 has an eccentric pivot hole 521a, and be combined in the output jack-post 511 of gear train 51, cylindrical wheel 522 is set in the outer ring edge 521b of inner circle wheel 521, and cylindrical wheel 522 has one and links jack-post 522a, is combined in rotationally the free end 412 of magnetic element support 41.

after CD-ROM drive motor 6 starts, the first gear 512 via motor shaft 61 drive gear set 51 rotates, the first gear 512 drives the second gear 513 again and rotates, the second gear 513 drives the 3rd gear 514 again and rotates, and rotated by the inner circle wheel 521 of output jack-post 511 drive rotation wheels 52, the inner circle wheel 521 that rotates wheels 52 drives cylindrical wheel 522 and rotates, make the link jack-post 522a of cylindrical wheel 522 produce displacement, again by linking that magnetic element support 41 that jack-post 522a drives magnetic brake unit 4 approaches take the axostylus axostyle 321 of the outboard end 32 of bolster 3 as pivot or away from becket 2.

Refer to Fig. 6 and Fig. 7, the utility model the second embodiment compares with the first embodiment, and it is on the whole all similar on structure, and different persons are that transmission component 5 includes a gear train 51 and a driving wheel group 53.In addition, more include a cover plate 33a, be incorporated into bolster 3.

Gear train 51 is incorporated into CD-ROM drive motor 6, and by CD-ROM drive motor 6 driven rotary, gear train 51 includes an output jack-post 511, one first gear 512, one second gear 513 and one the 3rd gear 514.

Driving wheel group 53 includes a drive 531 and a power transmission shaft 532.Drive 531 has an output shaft hole 531b of a central axis hole 531a and a close position at central axis hole 531a, the axis hole 531a of central authorities is combined in the output jack-post 511 of gear train 51, take output jack-post 511 as the axle center rotation, power transmission shaft 532 is combined in the output shaft hole 531b of drive 531, power transmission shaft 532 has a transmission jack-post 532a, is combined in rotationally the free end 412 of magnetic element support 41.

After CD-ROM drive motor 6 starts, the drive 531 that drives driving wheel group 53 via gear train 51 rotates, the drive 531 of driving wheel group 53 drives power transmission shaft 532 displacements, then the magnetic element support 41 that is driven magnetic brake units 4 by power transmission shaft 532 approaches take the axostylus axostyle 321 of the outboard end 32 of bolster 3 as pivot or away from becket 2.

Refer to Fig. 8 to Figure 10, the utility model the 3rd embodiment eddy current type damping mechanism more can be combined with a generating set 7, in order to provide a power for operation to CD-ROM drive motor 6.

Generating set 7 includes a rotor 71, a stator 72 and a power coil group 73.Wherein, rotor 71 is in conjunction with being fixed on flywheel 1 and being subjected to flywheel 1 driven rotary, stator 72 is in conjunction with the close position of the rotating shaft 11 that is fixed on flywheel 1 and correspond to rotor 71, power coil group 73 winding at stator 72, when rotor 71 is subjected to flywheel 1 driven rotary, the a pair of power output end 731 of power coil group 73 is electrically connected to CD-ROM drive motor 6, to supply a power for operation to CD-ROM drive motor 6.

The gear train 51 of transmission component 5 is incorporated into CD-ROM drive motor 6, and by CD-ROM drive motor 6 driven rotary, gear train 51 includes an output jack-post 511, one first gear 512, one second gear 513 and one the 3rd gear 514.

In addition, above the drive 531 of driving wheel group 53, more be combined with a circuit board 54, the displacement while driving magnetic element support 41 displacement of magnetic brake units 4 in order to the power transmission shaft 532 that reads driving wheel group 53.

Refer to Figure 11 and Figure 12, the utility model the 4th embodiment and last embodiment different persons be that the stator 72a of generating set 7a is a complete circle, the rotating shaft binding end 31 of bolster 3 more is extended with a fixed support 34, and fixed support 34 is incorporated into a select location of the stator 72 of generating set 7a.

Stator 72a in conjunction be fixed on flywheel 1 rotating shaft 11 close position and correspond to rotor 71a, power coil group 73a winding at stator 72a, when rotor 71a is subjected to flywheel 1 driven rotary, the a pair of power output end 731a of power coil group 73a is electrically connected to CD-ROM drive motor 6, to supply a power for operation to CD-ROM drive motor 6.

In addition, above the 3rd gear 514 of gear train 51, more be combined with a variable resistor 55, by the 3rd gear 514, drive variable resistor 55, change the resistance value of variable resistor 55, the displacement while driving magnetic element support 41 displacement of magnetic brake units 4 in order to the power transmission shaft 532 that reads driving wheel group 53.

Separately refer to Figure 13 and Figure 14, in the utility model the 4th embodiment, becket 2a is comprised of a plurality of arc metal plate 21a, between adjacent two arc metal plates, forms a spacing is arranged.

In addition, the utility model more comprises at least one induction coil 8 and an induction treating apparatus 81.Induction coil 8 is configured in the adjacent position of becket 2a, the vortex flow that produces at becket 2a in order to sensing magnetic brake unit 4, and producing a corresponding induced-current, induction treating apparatus 81 is connected in induction coil 8, the induced-current that produces in order to induction receiving coil 8.

when flywheel 1 rotates, because becket 2a is comprised of a plurality of arc metal plate 21a, and has spacing between arc metal plate 21a, therefore when the spacing between arc metal plate 21a turns to the position of induction coil 8, between the magnetic brake unit 4 at spacing position and becket 2a without magnetic force line cutting, therefore can't produce eddy current effects, therefore induction coil 8 also can't the sensing vortex flow and cause faradic signal interruption, and then form a periodic discontinuous signal, as shown in figure 13, by in diagram, showing that induction coil 8 is after the faradic waveform of induction generation time length ti each time, the calm shape state of free length tj will be followed, wherein time span ti becomes positive correlation with the arc length of arc metal plate 21a, with the rotating speed of flywheel 1, be inversely proportional to, time span tj becomes positive correlation with gap length.

Induction treating apparatus 81 includes a rectifying and wave-filtering module 811, an A/D conversion module 812, is processed module 813 and and shown module 814.rectifying and wave-filtering module 811 is electrically connected to induction coil 8, after the processing of induced-current via 811 execution one rectifications of rectifying and wave-filtering module and filtering that makes induction coil 8 inducing eddy-current produce, export, A/D conversion module 812 is electrically connected on rectifying and wave-filtering module 811, after will becoming a numerical digit signal through the matching test induced-current conversion process that rectifying and wave-filtering module 811 is processed and exported, export, processing module 813 is electrically connected to A/D conversion module 812, in order to receive and to process the numerical digit signal by 812 outputs of A/D conversion module, and show that module 814 is electrically connected to processing module 813, in order to the control signal and the information that receive and Graphics Processing module 813 is exported.

the speed of rotating when flywheel 1 heals when fast, induction coil 8 produces non-inductive electric current in unit interval number of times will become positive correlation and increase progressively, therefore after processing the main number of times by non-inductive electric current in the judgement unit interval of module 813, convert thereof into the rotating speed for flywheel 1, and because the size (being resistance) of vortex flow (Fddy Current) also is directly proportional to the magnetic field intensity of magnetic brake unit 4, therefore the A/D conversion module 812 by the detecting gained can be converted into the drag size that produces between present magnetic brake unit 4 and becket 2a and be shown in demonstration module 814, but show that the shown information of module 814 can include but not limited to the rotating speed of flywheel 1, Resistance Value or drive the distance etc.

The foregoing is only the schematic specific embodiment of the utility model, not in order to limit scope of the present utility model.Any those skilled in the art, the equivalent variations of having done under the prerequisite that does not break away from design of the present utility model and principle and modification, all should belong to the scope that the utility model is protected.

Claims

1. An eddy current type damping mechanism is characterized in that, comprising:

A flywheel rotates with a rotating shaft as the center of rotation and is driven by an external driving force, and the rotating shaft is combined with a shaft seat;

a metal ring coupled to the flywheel;

A support frame has a joint end of the rotating shaft and an outer end, wherein the joint end of the rotating shaft is combined with the shaft seat, and the outer end extends to a position adjacent to the metal ring, and a shaft rod is arranged at the outer end;

A magnetic brake unit includes a magnetic element bracket and a plurality of magnetic elements, the magnetic element is combined with the outer ring surface of the magnetic element bracket and faces adjacent to the metal ring, one end of the magnetic element bracket is a free end, and the other a shaft with one end rotatably coupled to the outboard end of the bracket;

a transmission assembly connected to the magnetic braking unit;

A drive motor, connected to the transmission assembly, the drive motor drives the magnetic element bracket to rotate with the shaft at the outer end of the support frame as the center of rotation through the transmission assembly, so that the magnetic element of the magnetic braking unit approaches or moves away The metal ring generates a magnetic force field by the magnetic element, and then generates eddy current in the metal ring and produces a braking force to the flywheel.

2. The eddy current damping mechanism according to claim 1, wherein the transmission assembly comprises:

A gear set, combined with the drive motor, driven to rotate by the drive motor, the gear set has an output shaft;

A rotating wheel set, including:

an inner circular wheel, the inner circular wheel has an eccentric shaft hole, combined with the output shaft of the gear set;

An outer round wheel is sleeved on the outer ring edge of the inner round wheel, and the outer round wheel has a connecting shaft column, which is rotatably combined with the free end of the magnetic element bracket;

Wherein after the driving motor is actuated, the inner round wheel of the rotating wheel set is driven to rotate through the gear set, and the inner round wheel of the rotating wheel set drives the outer round wheel to rotate, so that the connecting shaft of the outer round wheel Displacement occurs, and then the connecting shaft drives the magnetic element support of the magnetic brake unit to approach or move away from the metal ring with the shaft rod at the outer end of the support frame as the center of rotation.

3. The eddy current damping mechanism according to claim 2, wherein the gear set comprises:

a first gear meshed with a motor shaft of the drive motor;

a second gear located adjacent to the first gear and engaged with the first gear;

A third gear meshes with the second gear and rotates around the output shaft.

4. The eddy current damping mechanism according to claim 2, wherein the transmission assembly is combined with a cover plate.

5 . The eddy current damping mechanism according to claim 1 , wherein the metal ring is selected from non-magnetic materials such as aluminum or copper.

6. The eddy current damping mechanism according to claim 1, wherein the magnetic element is selected from permanent magnets and electromagnets.

7. The eddy current damping mechanism according to claim 1, wherein the transmission assembly comprises:

A transmission wheel set, including:

A transmission wheel, having a central shaft hole and an output shaft hole located adjacent to the central shaft hole, the central shaft hole is combined with the output shaft column of the gear set, and rotates around the output shaft column;

A transmission shaft, combined in the output shaft hole of the transmission wheel, the transmission shaft has a transmission shaft column, rotatably combined with the free end of the magnetic element bracket;

Wherein after the drive motor is actuated, the transmission wheel of the transmission wheel set is driven to rotate through the gear set, the transmission wheel of the transmission wheel set drives the transmission shaft to displace, and then the transmission shaft drives the magnetic braking unit to rotate. The element bracket approaches or moves away from the metal ring with the shaft rod at the outer end of the bracket as the center of rotation.

8 . The eddy current damping mechanism according to claim 7 , wherein the transmission wheel is combined with a circuit board for reading the displacement of the magnetic braking unit.

9. The eddy current damping mechanism as claimed in claim 7, wherein the gear set is combined with a variable resistor for reading the displacement of the magnetic braking unit.

10. The eddy current damping mechanism according to claim 7, wherein the gear set comprises:

a first gear meshed with a motor shaft of the drive motor;

A third gear meshes with the second gear and rotates around the output shaft.

11. The eddy current damping mechanism according to claim 7, wherein the transmission assembly is combined with a cover plate.

12. The eddy current damping mechanism as claimed in claim 1, wherein the driving motor is combined with a generator set, and the generator set includes:

A rotor is combined and fixed on the flywheel, and driven to rotate by the flywheel;

a stator fixed adjacent to the shaft of the flywheel and corresponding to the rotor;

A generating coil set is wound around the stator. When the rotor is rotated by the flywheel, a pair of power output ends of the generating coil set are electrically connected to the driving motor to supply a working power to the driving motor.

13. The eddy current damping mechanism according to claim 1, wherein the metal ring is composed of a plurality of arc-shaped metal sheets, and there is a gap between two adjacent arc-shaped metal sheets.

14. The eddy current damping mechanism according to claim 1, further comprising:

At least one induction coil for sensing the eddy current generated by the magnetic braking unit in the metal ring and generating a corresponding induced current is arranged adjacent to the metal ring;

An induction processing device for receiving the induced current generated by the induction coil is connected to the induction coil.

15. The eddy current damping mechanism according to claim 14, wherein the induction processing device comprises:

A rectification and filtering module that receives the induced current and performs a rectification and filtering process to output, and is electrically connected to the induction coil;

An A/D conversion module that receives the induced current processed by the rectification and filtering module, converts it into a digital signal and outputs it, and is electrically connected to the rectification and filtering module;

A processing module for receiving and processing the digital signal is electrically connected with the A/D conversion module.