Stair climbing training machine

Abstract

The utility model provides a stair climbing training machine which comprises a machine frame, a transmission belt and a magnetic control mechanism. Wherein sliding rods are arranged on the two sides of the rack, the two sliding rods are connected with pedals which slide relatively in a matched mode, the two pedals are connected with the two ends of a transmission belt respectively, and the transmission belt further winds around a magnetic wheel of the magnetic control mechanism. During training, a trainer alternately steps on the pedals with two feet, so that the two pedals alternately ascend and descend, the training action of climbing stairs is simulated, and in the process, the transmission belt is driven to operate, and meanwhile, the magnetic wheels can rotate. The magnetic wheel forms resistance for the transmission belt to operate under the magnetic action of the magnet in the fixed disc, so that the force required for pressing the pedal downwards is improved. When the training intensity needs to be adjusted, loosening or tensioning of the sliding block can be achieved by releasing or rolling the wire harness through the adjuster, so that the gap between the magnet on the back face of the arc-shaped plate and the annular face of the magnetic wheel is adjusted, the rotating resistance of the magnetic wheel is changed, and a trainer can conveniently select different fitness intensities to adapt to fitness training of different intensities.

Description

Technical Field

[0001] This utility model relates to the field of fitness equipment, and in particular to a stair climbing training machine. Background Technology

[0002] As demand in the fitness industry gradually emerges, fitness equipment that simulates stairs has appeared on the market in recent years. However, the structure of such equipment on the market is relatively complex and the cost is relatively high.

[0003] In view of this, technicians in related fields have developed a climbing machine structure that connects a drive belt to two pedals, such as the climbing training machine disclosed in application number 201620736295.3. Although the structure of such climbing training machines is simple, they cannot adjust the training resistance and cannot adapt to fitness training of different intensities. Utility Model Content

[0004] To address the shortcomings mentioned above in the background technology, this utility model provides a stair climbing training machine.

[0005] The present invention adopts the following technical solution:

[0006] A stair climbing training machine, the training machine comprising:

[0007] The frame has sliding rods on both sides, each sliding rod is adapted to connect to a relatively sliding pedal, and each pedal is connected to a handrail extending to the top of the frame.

[0008] A drive belt is provided, with its two ends connected to the two pedals respectively. Adjustable wheels are provided on both sides above the frame, and the drive belt passes over the top of the two adjustable wheels.

[0009] A magnetic control mechanism includes a fixed disk, a drive shaft, an arc plate, a magnetic wheel, and a slider. The fixed disk is fixed to the frame, and a magnet is fixed to the side of the arc plate facing outward from the fixed disk. One end of the drive shaft passes through and is fixed to the center of the fixed disk. The magnetic wheel is connected to the drive shaft and rotates relative to the fixed disk. The annular surface of the magnetic wheel covers the side of the magnet. The portion of the drive belt between the two adjusting wheels passes under the magnetic wheel.

[0010] One end of the arc-shaped plate is pivotally connected to the fixed disk, and an elastic element is connected between the arc-shaped plate and the fixed disk. The elastic element generates a thrust that pushes the magnet out of the fixed disk. The other end of the arc-shaped plate is connected to the slider, and the slider is restricted to slide linearly relative to the end of the arc-shaped plate pivotally connected to the fixed disk. The regulator is used to wind up or unwind the wire harness. The regulator is fixed to the frame, and the wire harness of the regulator is connected to the slider.

[0011] In one possible implementation, the bottom surface of the pedal is fixed with a slide block, the slide block is provided with a plurality of first rollers, the first rollers roll against the surface of the slide rod, and the slide block is provided with first rollers on both sides of the slide rod, and the slide rod is provided with two first rollers on at least one side.

[0012] In one possible implementation, two connecting plates are fixed to both sides of the pedal, and the two connecting plates are respectively located on both sides of the slide. One end of each connecting plate is pivotally connected to both sides of the slide. The other end of each connecting plate is provided with a row of adjustment holes, and the adjustment holes of the two connecting plates are arranged one-to-one. An adjustment rod is inserted through the slide. The adjustment rod passes through an adjustment hole of one connecting plate, then through the slide, and then through the corresponding adjustment hole of the other connecting plate, so that the pedal is fixed on the slide.

[0013] In one possible implementation, one end of the handrail is connected to the slide, and a limiting seat is fixed to the back of the upper end of the frame. Two second rollers are provided in the limiting seat, and the handrail passes between the two second rollers, so that the second rollers roll against the surface of the handrail.

[0014] In one possible implementation, a crossbeam is fixed above the frame, and two adjustable seats that can only move vertically are provided on both sides of the crossbeam. The two adjustable wheels are respectively disposed in the two adjustable seats and rotate. The upper end of the adjustable seat is provided with a suspension hole. The adjustable seat is also connected to an adjusting bolt. The stud of the adjusting bolt passes through the suspension hole from bottom to top and then spirals through the crossbeam, so that the screw head of the adjusting bolt is restricted within the adjusting seat.

[0015] In one possible implementation, the training machine further includes an elastic band with its two ends connected to the two pedals respectively, and tension wheels are provided on both sides below the frame, with the portion of the elastic band between the two pedals passing over the two tension wheels.

[0016] In one possible implementation, the fixing plate includes a first housing and a second housing. The middle of the first housing and the middle of the second housing are both raised to form a fixing part. A groove is provided on one side of the fixing part. After the fixing parts of the first housing and the second housing are fitted and fixed, the slider is restricted to slide within the grooves of the two fixing parts. The arc plate is located on the periphery of the two fixing parts.

[0017] In one possible implementation, a pull wire is fixed to the side of the slider, and a connecting hole is provided at the other end of the arc plate. After the pull wire passes through the connecting hole, a limiting part is provided. The outer diameter of the limiting part is larger than that of the connecting hole, so that the pull wire cannot be pulled out of the connecting hole.

[0018] In one possible implementation, both the first housing and the second housing have a rotating hole on one side next to the fixing part, and both sides of one end of the arc plate are provided with connecting pins, which are respectively fitted into the rotating hole of the first housing and the rotating hole of the second housing.

[0019] In one possible implementation, the drive shaft has a fixed bearing, and a bearing seat is provided at the center of the magnetic wheel, with the bearing fixed within the bearing seat.

[0020] As can be seen from the above description of the structure of this utility model, compared with the prior art, this utility model has the following advantages: In the structure of this utility model, two pedals are connected by a transmission belt. When one pedal moves downward along the slide bar, the other pedal slides upward under the pulling force of the transmission belt, forming a movement mode in which the two pedals slide up and down alternately to simulate the training action of climbing stairs. During this process, the transmission belt simultaneously drives the magnetic wheel to rotate, so that the magnetic wheel forms resistance to the operation of the transmission belt under the magnetic force of the magnet, thereby increasing the force required to step down on the pedal. When it is necessary to adjust the training intensity, the slider can be moved by releasing or rewinding the wire harness of the adjuster to loosen or tighten the arc plate, thereby adjusting the gap between the magnet on the back of the arc plate and the annular surface of the magnetic wheel, thereby changing the rotational resistance of the magnetic wheel, making it convenient for trainees to select different fitness intensities to adapt to different intensity fitness training. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the present invention from a frontal view.

[0022] Figure 2 for Figure 1 A magnified diagram of point A in the middle.

[0023] Figure 3 for Figure 1 A magnified diagram of point B in the middle.

[0024] Figure 4 This is a three-dimensional structural diagram of the pedal connected to the slide.

[0025] Figure 5 This is a three-dimensional structural diagram of the present invention from the rear view.

[0026] Figure 6 This is a structural schematic diagram of the present invention from the front view of the slide bar.

[0027] Figure 7 for Figure 6 A cross-sectional view of the magnetic control mechanism in the CC direction.

[0028] Figure 8 for Figure 7 A magnified diagram of point D in the middle.

[0029] Figure 9 This is a schematic diagram of the three-dimensional structure of the fixed disk.

[0030] Figure 10 This is a schematic diagram of the cross-sectional structure of the fixed disk.

[0031] Figure 11 A three-dimensional schematic diagram showing the internal components of the fixed plate after the second housing is hidden.

[0032] Figure 12 This is a three-dimensional structural diagram of the first shell. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this application clearer, the application will now be described in further detail with reference to the accompanying drawings.

[0034] In the following description, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0035] Furthermore, in this application, directional terms such as "upper" and "lower" are defined relative to the indicated placement of the components in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the placement of the components in the accompanying drawings.

[0036] This utility model discloses a stair climbing training machine, as shown in the attached figure. Figure 1 , 2 As shown in Figure 5, the training machine includes a frame 1, a transmission belt 2, and a magnetic control mechanism 3. Each side of the frame 1 has a sliding rod 11, and each sliding rod 11 is fitted with a sliding foot 4. The two foot pedals 4 are used for stepping down with each foot while standing. Adjustable wheels 13 are also provided on both sides of the top of the frame 1. After the transmission belt 2 passes over the two adjustable wheels 13, its two ends are connected to the two foot pedals 4 respectively. This structure allows the trainee to step down on one foot pedal 4 and slide downwards along the sliding rod 11, while the other foot pedal 4 slides upwards under the pulling force of the transmission belt 2, forming an alternating up-and-down sliding motion of the two foot pedals 4, thus simulating the training action of climbing stairs. Preferably, the frame 1 also has a support rod 12 fixed to the back of the two sliding rods 11, causing the sliding rods 11 to be tilted relative to the ground, simulating the slope of climbing stairs.

[0037] As attached Figure 3As shown, a sliding block 41 is fixed to the bottom surface of the pedal 4. The sliding block 41 is provided with a plurality of first rollers 411. The first rollers 411 roll against the surface of the slide rod 11, and the slide rod 11 is provided with at least two first rollers 411 on one side, thus forming an attachment. Figure 4 As shown, two first rollers 411 are provided on the front of the slide rod 11, and one first roller 411 is provided on the back of the slide rod 11, thereby restricting the pedal 4 to slide along the slide rod 11. Further, connecting plates 42 are fixed to both sides under the pedal 4, with the two connecting plates 42 located on both sides of the slide block 41 respectively. One side of each connecting plate 42 is pivotally connected to both sides of the slide block 41, allowing the pedal 4 to swing relative to the slide block 41. Preferably, the pivot connections in this embodiment can all be similar to... Figure 4 The two components shown are connected by a through-pin 44, allowing them to rotate relative to each other.

[0038] On the other side of each of the two connecting plates 42, a row of adjustment holes 421 is provided. The adjustment holes 421 of the two connecting plates 42 are arranged one-to-one. Adjustment rods 43 are inserted through the adjustment holes 421. The adjustment rods 43 pass through one adjustment hole 421 of one connecting plate 42, then through the slide 41, and then through the corresponding adjustment hole 421 of the other connecting plate 42, so that the pedal 4 is fixed on the slide 41. The end of the adjustment rod 43 can be provided with an elastic protruding limiting bead, which is used to block the connecting plate 42 so that the adjustment rod 43 cannot be easily pulled out. When it is necessary to adjust the angle of the pedal 4, the adjustment rod 43 is inserted into different adjustment holes 421 in the manner described above to change the angle of the pedal 4 relative to the slide 11, thereby changing the angle of ankle flexion when standing on the frame 1, so as to form stair climbing training with different inclines.

[0039] Continue to refer to the appendix Figure 1 and 5 Both pedals 4 are connected to handrails 5, which extend above the frame 1 for gripping with both hands. The lower end of the handrail 5 is pivotally connected to the slide 41, so that when the pedals 4 slide along the slide 11, the handrail 5 moves accordingly. During training, gripping the two handrails 5 with both hands helps maintain body stability and coordination. Furthermore, a limiting seat 14 is fixed to the back of the upper end of the frame 1. Two second rollers 15 are installed in the limiting seat 14. The handrail 5 passes between the two second rollers 15, so that the second rollers 15 roll against the surface of the handrail 5, thereby supporting the handrail 5 and preventing the upper end of the handrail 5 from swinging downward.

[0040] Please refer to the appendix. Figure 3 and 6The training machine may also include an elastic band 6, with both ends of the elastic band 6 connected to two pedals 4, specifically to a slide 41 on the back of the pedals 4. Tension wheels 19 are provided on both sides below the frame 1, and the portion of the elastic band 6 between the two pedals 4 passes over the two tension wheels 19. In this structure of the elastic band 6, the tension of the elastic band 6 during contraction can generate downward resistance on the pedals 4, thereby increasing the resistance to pressing down on the pedals 4.

[0041] As attached Figures 9 to 11 As shown, the magnetic control mechanism 3 includes a fixed disk 31, a drive shaft 32, an arc-shaped plate 33, a magnetic wheel 34, and a slider 35. The fixed disk 31 is fixed to the frame 1; any fixing method not described in this embodiment can be achieved by using through screws. The drive shaft 32 passes through the center of the fixed disk 31 and is fixed to the fixed disk 31. The structure of the fixed disk 31 may include a first housing 311 and a second housing 312, as shown in the attached diagram. Figure 12 A fixing part 313 is formed by a protrusion in the middle of the first housing 311 and the middle of the second housing 312. A sliding groove 314 is provided on one side of the fixing part 313. Both the first housing 311 and the second housing 312 also have a rotating hole 315 on one side next to the fixing part 313, corresponding to one end of the sliding groove 314 in the straight extension direction. Connecting pins 331 are provided on both sides of one end of the arc-shaped plate 33. When installing the fixing plate 31, insert one connecting pin 331 of the arc plate 33 into the rotating hole 315 of the first housing 311, and embed the slider 35 into the sliding groove 314 of the first housing 311. Then, attach the fixing part 313 of the second housing 312 and the fixing part 313 of the first housing 311 together and fix them by means of through screws. This allows the rotating hole 315 of the second housing 312 to be sleeved outside the other connecting pin 331 of the arc plate 33, so that one end of the arc plate 33 is pivotally connected to the fixing plate 31. At the same time, the sliding groove 314 of the second housing 312 can also be sleeved outside the slider 35, so that the arc plate 33 is located outside the two fixing parts 313 and swings relative to the fixing plate 31. The slider 35 is restricted to slide linearly relative to the end of the arc plate 33 that is connected to the two fixing parts 313 within the sliding groove 314 of the two fixing parts 313.

[0042] A magnet 36 is fixed to the side of the arc-shaped plate 33 facing outward from the fixed disk 31. The magnet 36 can be a magnet with magnetic properties. Both the first housing 311 and the second housing 312 are provided with receiving grooves 316 at the corresponding midpoints of the arc-shaped plates 33. Elastic members 37 are embedded in the receiving grooves 316, forming a... Figure 7 and 8The elastic element 37 shown is located between the arc-shaped plate 33 and the fixed plate 31, and the elastic force of the elastic element 37 forms a thrust that pushes the arc-shaped plate 33 out of the fixed plate 31. Preferably, the elastic element 37 can be a spring. In addition, the end of the arc-shaped plate 33 away from the connecting pin 331 is connected to the slider 35 via a pull wire 351. The connection method is that the pull wire 351 is fixed to the side of the slider 35, and the fixing method can be binding. A connecting hole is provided at the end of the arc-shaped plate 33 away from the connecting pin 331. After the pull wire 351 passes through the connecting hole, a limiting part is provided. This limiting part can be a knot, and the outer diameter of the limiting part is larger than the connecting hole, so that the pull wire 351 cannot be pulled out of the connecting hole. By sliding the slider 35 away from the end of the arc-shaped plate 33, the arc-shaped plate 33 can overcome the thrust of the elastic element 37 and pull the end away from the connecting pin 331 toward the fixed part 313, thereby fixing the arc-shaped plate 33 and thus maintaining a gap between the annular surface of the magnet 36 and the magnetic wheel 34.

[0043] Continue to refer to the appendix Figure 9 and 10 A fastener 317 is provided on the side of the second housing 312 facing away from the first housing 311. The stud of the screw passes through the second housing 312 on the side of the first housing 311 and is screwed to the fastener 317 for fastening. This clamps and secures the second housing 312 to the first housing 311 and the fastener 317, forming a fixed whole. A through mounting hole is provided in the center of the fastener 317. One end of the drive shaft 32 passes through the fastener 317, and a bolt is screwed into the side of the fastener 317 to press the drive shaft 32 tight, thus fixing one end of the drive shaft 32 to the fixed plate 31.

[0044] Continue to refer to the appendix Figure 10The magnetic wheel 34 is connected to one end of the drive shaft 32 extending out of the fixed disk 31, allowing the magnetic wheel 34 to rotate relative to the drive shaft 32. Specifically, the connection structure can be such that the drive shaft 32 has a fixed bearing, and a bearing seat is provided in the center of the magnetic wheel 34. The bearing is embedded and fixed within the bearing seat, thus restricting the rotation of the magnetic wheel 34 relative to the fixed disk 31 with the drive shaft 32 as its axis. The magnetic wheel 34 can be an iron basin-shaped structure, with its annular surface covering the magnets 36 on the side of the fixed disk 31, so that the annular surface of the magnetic wheel 34 corresponds to the magnets 36 near the arc-shaped plate 33. Additionally, a pulley 341 can be provided on the other side of the magnetic wheel 34. The portion of the transmission belt 2 between the two adjusting wheels 13 passes under the magnetic wheel 34, so that when the trainee steps on the pedal 4, causing the transmission belt 2 to move, the magnetic wheel 34 rotates. Similarly, the magnetic wheel 34 forms resistance to the movement of the transmission belt 2. The above structure utilizes the relative non-contact rotation of the magnetic wheel 34 and the magnet 36 to cut the magnetic lines of force, which generates a reaction force, thereby providing resistance when the magnetic wheel 34 rotates, and thus increasing the resistance of the transmission belt 2 driving the magnetic wheel 34 to rotate, so as to increase the pressure required for the trainee to slide down the pedal 4.

[0045] Please refer to the appendix. Figure 2 and 11 The magnetic control mechanism 3 also includes an adjuster 38, which is a multi-position fine-tuning cable puller 351 in the prior art, used to wind up or unwind the cable harness 381. The adjuster 38 is fixed to the front of the frame 1. The cable harness 381 of the adjuster 38 is also connected to the slider 35. Specifically, the position where the cable harness 381 is connected to the slider 35 and needs to be turned can be achieved by setting a guide wheel on the frame 1, so that the cable harness 381 passes around the guide wheel and connects to the slider 35. In use, by releasing or winding the cable harness 381 through the adjuster 38, the slider 35 can be moved, so that the slider 35 can loosen or tighten the arc plate 33 to adjust the gap between the magnet 36 and the annular surface of the magnetic wheel 34 on the back of the arc plate 33, thereby changing the rotational resistance of the magnetic wheel 34, making it easier for the trainee to select different fitness intensities.

[0046] As attached Figure 2 and 5 As shown, a crossbeam 17 is fixed between two sliding rods 11 on the upper part of the frame 1. Adjustment seats 16, which can only move vertically, are provided on both sides of the crossbeam 17. Two adjustment wheels 13 are respectively mounted and rotated within the two adjustment seats 16. Furthermore, the pivot shaft at the center of the adjustment wheel 13 passes through both sides of the adjustment wheel 13 and through the limiting groove 171 provided under the crossbeam 17, thereby restricting the adjustment seat 16 to move only vertically relative to the crossbeam 17. (See attached diagram.) Figure 7 and 8The upper end of the adjusting seat 16 is provided with a suspension hole. An adjusting bolt 18 is also installed through the suspension hole of the adjusting seat 16. The stud of the adjusting bolt 18 passes through the suspension hole from bottom to top and then spirals through the crossbeam 17, so that the head of the adjusting bolt 18 is confined inside the adjusting seat 16. The adjusting seat 16 is fixed under the crossbeam 17 and the transmission belt 2 is suspended by the adjusting wheel 13. When it is necessary to adjust the tension of the transmission belt 2, the adjusting seat 16 and the adjusting wheel 13 inside the adjusting seat 16 are moved relative to the crossbeam 17 by rotating the adjusting bolt 18, so that the transmission belt 2 can be tightened upward or loosened downward.

[0047] In summary, the structure of this utility model connects two pedals 4 via a transmission belt 2. When one pedal 4 moves downward along the slide bar 11, the other pedal 4 slides upward under the pulling force of the transmission belt 2, forming an alternating up-and-down sliding motion of the two pedals 4 to simulate the training action of climbing stairs. During this process, the transmission belt 2 simultaneously drives the magnetic wheel 34 to rotate, causing the magnetic wheel 34 to form resistance to the movement of the transmission belt 2 under the magnetic force of the magnet 36, thereby increasing the force required to press down the pedal 4. When it is necessary to adjust the training intensity, the slider 35 can be loosened or tightened by releasing or rewinding the wire harness 381 through the adjuster 38, thereby adjusting the gap between the magnet 36 on the back of the arc plate 33 and the annular surface of the magnetic wheel 34, thus changing the rotational resistance of the magnetic wheel 34, making it convenient for trainees to select different fitness intensities to adapt to different levels of fitness training.

[0048] The above are merely specific embodiments of this utility model, but the design concept of this utility model is not limited thereto. Any non-substantial modifications made to this utility model using this concept shall be considered as an infringement of the protection scope of this utility model.

Claims

1. A stair climbing training machine, characterized in that, The training machine includes: The frame has sliding rods on both sides, each sliding rod is adapted to connect to a relatively sliding pedal, and each pedal is connected to a handrail extending to the top of the frame. A drive belt is provided, with its two ends connected to the two pedals respectively. Adjustable wheels are provided on both sides above the frame, and the drive belt passes over the top of the two adjustable wheels. A magnetic control mechanism includes a fixed disk, a drive shaft, an arc plate, a magnetic wheel, and a slider. The fixed disk is fixed to the frame, and a magnet is fixed to the side of the arc plate facing outward from the fixed disk. One end of the drive shaft passes through and is fixed to the center of the fixed disk. The magnetic wheel is connected to the drive shaft and rotates relative to the fixed disk. The annular surface of the magnetic wheel covers the side of the magnet. The portion of the drive belt between the two adjusting wheels passes under the magnetic wheel. One end of the arc-shaped plate is pivotally connected to the fixed disk, and an elastic element is connected between the arc-shaped plate and the fixed disk. The elastic element generates a thrust that pushes the magnet out of the fixed disk. The other end of the arc-shaped plate is connected to the slider, and the slider is restricted to slide linearly relative to the end of the arc-shaped plate pivotally connected to the fixed disk. The regulator is used to wind up or unwind the wire harness. The regulator is fixed to the frame, and the wire harness of the regulator is connected to the slider.

2. The training machine as described in claim 1, characterized in that, The bottom surface of the pedal is fixed with a slide block, the slide block is provided with a plurality of first rollers, the first rollers roll against the surface of the slide rod, and the slide block is provided with first rollers on both sides of the slide rod, and the slide rod is provided with two first rollers on at least one side.

3. The training machine as described in claim 2, characterized in that, Both sides of the pedal are fixed with connecting plates, which are located on both sides of the slide. One end of each connecting plate is pivotally connected to both sides of the slide. The other end of each connecting plate is provided with a row of adjustment holes, and the adjustment holes of the two connecting plates are arranged one-to-one. An adjustment rod is inserted through the slide. The adjustment rod passes through an adjustment hole of one connecting plate, then through the slide, and then through the corresponding adjustment hole of the other connecting plate, so that the pedal is fixed on the slide.

4. The training machine as described in claim 2 or 3, characterized in that, One end of the handrail is connected to the slide block, and a limiting seat is fixed on the back of the upper end of the frame. Two second rollers are provided in the limiting seat, and the handrail passes between the two second rollers, so that the second rollers roll against the surface of the handrail.

5. The training machine as described in claim 1, characterized in that, A fixed crossbeam is located above the frame. Adjustment seats that can only move vertically are provided on both sides of the crossbeam. Two adjustment wheels are respectively installed in the two adjustment seats and rotate. A suspension hole is provided at the upper end of the adjustment seat. The adjustment seat is also connected to an adjustment bolt. The stud of the adjustment bolt passes through the suspension hole from bottom to top and then spirals through the crossbeam, so that the screw head of the adjustment bolt is restricted within the adjustment seat.

6. The training machine as described in claim 1 or 5, characterized in that, The training machine also includes an elastic band, with its two ends connected to the two pedals respectively. Pull wheels are provided on both sides below the frame, and the portion of the elastic band between the two pedals passes over the two pull wheels.

7. The training machine as described in claim 1, characterized in that, The fixing plate includes a first housing and a second housing. The middle of the first housing and the middle of the second housing are both raised to form a fixing part. A sliding groove is provided on one side of the fixing part. After the fixing parts of the first housing and the second housing are fitted and fixed, the slider is restricted to slide within the sliding grooves of the two fixing parts. The arc plate is located on the periphery of the two fixing parts.

8. The training machine as described in claim 1 or 7, characterized in that, The slider has a pull wire fixed to its side, and the other end of the arc plate has a connecting hole. After the pull wire passes through the connecting hole, a limiting part is provided. The outer diameter of the limiting part is larger than the connecting hole, so that the pull wire cannot be pulled out of the connecting hole.

9. The training machine as described in claim 7, characterized in that, Both the first housing and the second housing have a rotating hole on one side next to the fixing part, and both sides of one end of the arc plate are provided with connecting pins. The two connecting pins are respectively fitted into the rotating hole of the first housing and the rotating hole of the second housing.

10. The training machine as described in claim 1, characterized in that, The drive shaft has a fixed bearing, and a bearing position is provided in the center of the magnetic wheel, with the bearing fixed in the bearing position.

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