Multi-folding treadmill

Abstract

The invention discloses a multi-folding treadmill which comprises a foldable treadmill platform, the treadmill platform comprises a front treadmill platform body and a rear treadmill platform body which are hinged to each other, the end, away from the end hinged to the rear treadmill platform body, of the front treadmill platform body is hinged to a front supporting frame, a handrail assembly is arranged above the front supporting frame, and a supporting foot assembly is arranged below the front supporting frame. The rear treadmill can be turned upwards and cover the front treadmill, the front treadmill can drive the rear treadmill to rotate to a vertical state relative to the front supporting frame to complete folding storage of the front treadmill and the rear treadmill, and the handrail assembly and the supporting foot assembly are arranged in a linkage mode and can be bent towards the inner side of the front supporting frame synchronously. Therefore, the whole treadmill can be stored and folded. The folding treadmill is ingenious in structural design and convenient to store and unfold, the front treadmill and the rear treadmill can continue to be folded to be in a vertical state after being folded, the armrest assemblies and the supporting foot assemblies can be folded and stored, the compactness of the stored state is high, and the occupied space of fitness equipment can be greatly reduced.

Description

Technical Field

[0001] The invention relates to fitness equipment, in particular to a multi-folding treadmill. Background Art

[0002] With the continuous improvement of living standards, people pay more and more attention to physical exercise, and running is the simplest and most effective way to keep fit. Treadmills are also increasingly popular. In order to facilitate storage, some athletes will choose foldable treadmills, which can be folded and stored to save space.

[0003] However, conventional folding treadmills generally only lift the treadmill upwards for storage, which saves limited space. Even for existing folding treadmills with hinged front and rear treadmills, when folded, only the rear treadmill is flipped upwards and covers the front treadmill for folding and storage, which does not save enough space, and the front treadmill also occupies a large area. In addition, conventional folding treadmills generally cannot adjust the slope of the treadmill and cannot achieve different slope changes. Therefore, they cannot simulate uphill running, flat running, downhill running and other sports types, and cannot meet the diverse needs of users. Therefore, the present application proposes a multi-folding treadmill for conventional folding treadmills, which is more compact when folded and stored, and also has a slope adjustment function, to solve the drawbacks of the above-mentioned folding treadmills that are not compact enough to store and cannot adjust the slope. Summary of the invention

[0004] The present invention provides a multi-folding treadmill, which has the effect of achieving a compact storage state of the folding treadmill and being able to adjust the slope of the treadmill. The specific technical solution is as follows:

[0005] A multi-folding treadmill, which includes a foldable running platform, the running platform includes a front running platform and a rear running platform which are hinged to each other, the front running platform is hinged to a front support frame at one end away from the rear running platform, an armrest assembly is arranged above the front support frame, and a support leg assembly is arranged below the front support frame, when folded, the rear running platform can be flipped up and covered on the front running platform, the front running platform can drive the rear running platform as a whole to rotate to a vertical state relative to the front support frame to complete the folding and storage of the front and rear running platforms, the armrest assembly and the support leg assembly are arranged in linkage, the armrest assembly and the support leg assembly can be synchronously bent toward the inner side of the front support frame to realize the storage and folding of the treadmill as a whole.

[0006] Furthermore, the front support frame includes a fixed frame, a column assembly is vertically arranged above the fixed frame, a slide seat is slidably arranged at one end of the column assembly close to the fixed frame, the end of the front treadmill is hinged to the slide seat, and the lower part of the front end of the front treadmill is connected to the slope adjustment assembly, and the slope adjustment assembly can drive the slide seat and the end of the front treadmill to move up and down with the rear end of the rear treadmill as a fulcrum to achieve the effect of adjusting the slope.

[0007] Further, the slope adjustment assembly includes a lifting bracket, lifting legs and a lifting link. One end of the lifting bracket is hinged to the front running board, and the other end of the lifting bracket is slidably arranged on the fixed frame. One end of the lifting leg is hinged to the end of the front running board close to the rear running board, and the other end of the lifting leg abuts against the ground. Both ends of the lifting link are respectively hinged to the lifting bracket and the lifting leg. The lifting bracket, the front running board, the lifting leg and the lifting link enclose a quadrilateral structure.

[0008] Further, rollers are arranged below both the lifting bracket and the lifting leg. The rollers of the lifting bracket can slide relative to the fixed frame, and the rollers of the lifting leg can slide relative to the ground.

[0009] Further, a track for the rollers of the lifting bracket to slide is arranged on the fixed frame. The track is fixedly arranged on the inner side surface of the fixed frame. The track includes a top plate, a bottom plate and a limiting plate. The top plate and the bottom plate jointly limit the movement track of the rollers of the lifting bracket to be horizontal, and the limiting plate can limit the moving distance of the rollers of the lifting bracket.

[0010] Further, a roller entrance and exit is arranged on the top plate of the track. When the slope of the running board is adjusted to be horizontal, the rollers of the lifting bracket correspond to the roller entrance and exit. When the running board is stored and folded, the rollers of the lifting bracket can move out from the roller entrance and exit. When the running board is unfolded from the vertical state, the rollers of the lifting bracket can enter the track from the roller entrance and exit.

[0011] Further, the armrest assembly is connected to the foot component through a control component. The control component includes a first rotating shaft, a rotating shaft link and a second rotating shaft which are connected. The first rotating shaft is arranged at the top position of the front support frame, and the second rotating shaft is arranged at the bottom position of the front support frame. The foot component is hinged to the bottom of the front support frame. The armrest assembly is connected to the first rotating shaft, and the foot component is connected to the second rotating shaft. The armrest assembly can rotate relative to the column through the first rotating shaft and drive the second rotating shaft to rotate, thereby driving the foot component to rotate synchronously.

[0012] Further, a self-locking component is arranged inside the armrest assembly, and the self-locking component can lock the armrest assembly in the unfolded state.

[0013] Further, the self-locking component includes a self-locking cylinder and a bolt. A clamping groove matched with the bolt is arranged on the self-locking cylinder. The self-locking cylinder is fixedly arranged at the top position of the column. The bolt is movably connected to the armrest assembly. The bolt is connected to an elastic component, and the elastic component can continuously provide a force for the bolt to insert into the clamping groove. The bolt is connected to a dial block, and the dial block is slidably connected to the armrest assembly.

[0014] Further, the self-locking component further includes a guide post. One end of the guide post is fixedly connected to the bolt and is arranged in parallel with the bolt, and the other end of the guide post is movably inserted on the first rotating shaft.

[0015] The structure of the present invention is ingeniously designed, facilitating storage and deployment. After the front and rear treadmills are folded, they can be further folded to a vertical state. Moreover, both the armrest assembly and the footrest assembly can be folded and stored, with high compactness in the storage state, which can greatly reduce the occupied space of the fitness equipment. Additionally, the armrest assembly and the footrest assembly are linked, making storage and deployment more convenient and faster. Finally, by setting a slope adjustment component, stepless adjustment of the treadmill slope can be achieved, greatly improving the user experience.

[0016] The above description is only an overview of the technical solution of the present invention. In order to be able to understand the technical means of the present invention more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present invention more obvious and understandable, the following specifically illustrates the embodiments of the present invention. Brief Description of the Drawings

[0017] By reading the detailed description of the preferred embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present invention. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0018] Figure 1 is a perspective view of the treadmill of the multi-fold treadmill of the present invention in a horizontal state;

[0019] Figure 2 is a side view of the slope adjustment component of the multi-fold treadmill of the present invention in a horizontal state;

[0020] Figure 3 is a perspective view of the treadmill of the multi-fold treadmill of the present invention in a slope state;

[0021] Figure 4 is a side view of the slope adjustment component of the multi-fold treadmill of the present invention in a slope state;

[0022] Figure 5 is Figure 4 an exploded view of the multi-fold treadmill;

[0023] Figure 6 is a schematic diagram of the connection between the roller of the lifting bracket and the track when the slope adjustment component of the present invention is in a slope state;

[0024] Figure 7 is a schematic diagram of the connection between the roller of the lifting bracket and the track when the slope adjustment component of the present invention is in a horizontal state;

[0025] Figure 8 is a connection schematic diagram of the locking component of the multi-fold treadmill of the present invention;

[0026] Figure 9Schematic diagram of the connection between the control component and the foot component of the multi-fold treadmill of the present invention;

[0027] Figure 10 Schematic diagram of the connection between the plug pin and the self-locking cylinder of the multi-fold treadmill of the present invention;

[0028] Figure 11 Schematic diagram of the folding process of the running platform of the multi-fold treadmill of the present invention;

[0029] Figure 12 Schematic diagram of the running platform of the multi-fold treadmill of the present invention after folding;

[0030] Figure 13 Schematic diagram of the multi-fold treadmill of the present invention in the storage state. Detailed implementation manners

[0031] In order to better understand the purpose, function and specific design of the present invention, the multi-fold treadmill of the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] As Figures 1-13 shown, the multi-fold treadmill of the present invention includes a foldable running platform 2, the running platform 2 includes a front running platform 21 and a rear running platform 22 which are hinged to each other and a running belt 23, a soft running board 24 is arranged above the front running platform 21 and the rear running platform 22, and the running belt 23 is sleeved on the front running platform 21 and the rear running platform 22; one end of the front running platform 21 far from the hinge with the rear running platform 22 is hinged to the front support frame 1, an armrest assembly 3 is arranged above the front support frame 1, and a foot component 4 is arranged below the front support frame 1. When folding, the rear running platform 22 can be turned up and covered on the front running platform 21, and the front running platform 21 can drive the rear running platform 22 as a whole to rotate relative to the front support frame 1 to a vertical state to complete the folding and storage of the front running platform 21 and the rear running platform 22. The armrest assembly 3 and the foot component 4 are linked, and the armrest assembly 3 and the foot component 4 can be bent synchronously towards the inner side of the front support frame 1 to realize the folding and storage of the whole treadmill.

[0033] Specifically, the front support frame 1 includes a fixed frame 11, a vertical column 12 is vertically arranged above the fixed frame 11, a sliding seat 13 is slidably arranged at one end of the vertical column 12 close to the fixed frame 11, the end of the front running platform 21 is hinged to the sliding seat 13, and the lower part of the front end of the front running platform 21 is connected to a slope adjusting component 5. The slope adjusting component 5 can drive the sliding seat 13 and the end of the front running platform 21 to move up and down with the rear end of the rear running platform 22 as a fulcrum, so as to achieve the effect of adjusting the slope.

[0034] The sliding seat 13 includes a sliding seat bracket 131, a plurality of rollers are arranged on the sliding seat bracket 131, the rollers are in contact with the vertical column 12 and can roll relative to the vertical column 12 in the vertical direction, and the end of the front running platform 21 is hinged to the sliding seat bracket 131.

[0035] As Figure 2 and Figure 4 shown, the slope adjustment assembly 5 includes a lifting bracket 51, lifting legs 52 and a lifting link 53. One end of the lifting bracket 51 is hinged to the front running platform 21, and the other end of the lifting bracket 51 is slidably arranged on the fixed frame 11. One end of the lifting leg 52 is hinged to one end of the front running platform 21 close to the rear running platform 22, and the other end of the lifting leg 52 abuts against the ground. Both ends of the lifting link 53 are respectively hinged to the lifting bracket 51 and the lifting leg 52. The lifting bracket 51, the front running platform 21, the lifting leg 52 and the lifting link 53 enclose a quadrilateral structure, so that the rotation of the lifting bracket 51 can drive the synchronous rotation of the lifting leg 52 through the lifting link 53, that is, the lifting bracket 51 and the lifting leg 52 are linked. By changing the inclination angles of the lifting bracket 51 and the lifting leg 52, the overall treadmill is adjusted in slope with the rear end of the rear running platform 22 as the fulcrum.

[0036] It can be understood that since the lifting bracket 51 and the lifting leg 52 are linked, when adjusting the slope, both the lifting bracket 51 and the lifting leg 52 can continuously support the running platform 2, thus ensuring the stability of the running platform 2 during use. In addition, in order to improve the bearing capacity at the connection position between the front running platform 21 and the rear running platform 22 during use, a bearing assembly 23 is arranged below the end of the front running platform 21 close to the rear running platform 22. After the rear running platform 22 is unfolded to the horizontal position, it can abut against the bearing assembly 25, and the bearing assembly 25 can provide a supporting force for the rear running platform 22. The bearing assembly 25 of this embodiment includes a bearing plate 251. One end of the bearing plate 251 is fixed below the end of the front running platform 21 close to the rear running platform 22, and the other end of the bearing plate 251 extends in a direction away from the front running platform 21.

[0037] One end of the lifting bracket 51 is connected to the lifting drive assembly 54, and the other end of the lifting drive assembly 54 is connected to the front running platform 21. The lifting drive assembly 54 can drive the lifting bracket 51 to rotate relative to the front running platform 21 to achieve the slope adjustment of the treadmill. The lifting drive assembly 54 of this embodiment includes a lifting motor. The lifting motor is fixed below the front running platform 21 and can swing relative to the front running platform 21. The lifting motor is connected to a telescopic push rod assembly 55, and the push rod assembly 55 is connected to the lifting bracket 51. The lifting motor drives the telescopic movement of the push rod assembly 55 to drive the lifting bracket 51 to rotate relative to the front running platform 21, so as to achieve stepless adjustment of the slope of the running platform 2.

[0038] Preferably, in order to improve the smoothness of adjusting the slope of the treadmill 2, rollers are provided below both the lifting bracket 51 and the lifting leg 52 of this embodiment, so that when adjusting the slope of the treadmill 2, the rollers of the lifting bracket 51 can slide relative to the fixed frame 11, and the rollers of the lifting leg 52 can slide relative to the ground. It should be noted that a track 14 for the rollers of the lifting bracket 51 to slide is provided on the fixed frame 11 of this embodiment. The track 14 is fixedly arranged on the inner side surface of the fixed frame 11. The track 14 includes a top plate 141, a bottom plate 142 and a limiting plate 143. The top plate 141 and the bottom plate 142 jointly limit the movement track of the rollers of the lifting bracket 51 to be horizontal, thereby ensuring the stability when adjusting the slope of the treadmill 2. The limiting plate 143 can limit the moving distance of the rollers of the lifting bracket 51, thereby limiting the maximum elevation angle of adjusting the slope of the treadmill 2 and avoiding equipment damage caused by excessive adjustment.

[0039] It should be noted that, as Figures 6-7 shown, a roller entrance and exit 144 is provided on the top plate 141 of the track 14. When the slope of the treadmill 2 is adjusted to be horizontal, the rollers of the lifting bracket 51 correspond to the roller entrance and exit 144. When the treadmill 2 is folded and stored, the rollers of the lifting bracket 51 can move out from the roller entrance and exit 144, so that the treadmill 2 can be folded in a vertical state. When the treadmill 2 is unfolded from the vertical state, the rollers of the lifting bracket 51 can enter the track 14 from the roller entrance and exit 144, so that the rollers of the lifting bracket 51 can move within the track 14 when adjusting the slope of the treadmill 2.

[0040] As Figures 11-12 shown, in order to facilitate the folding and storage of the treadmill 2, a spring bracket 15 is provided on the fixed frame 11. One end of the spring bracket 15 is connected to one end of the gas spring 16, and the other end of the gas spring 16 is connected to the rear end of the front treadmill 21. When folding and storing the treadmill 2, the gas spring 16 can provide assistance to enable the user to easily fold and store the treadmill 2.

[0041] As Figures 8-13 shown, the armrest assembly 3 of this embodiment is connected to the foot assembly 4 through the control assembly 6. The armrest assembly 3 can drive the foot assembly 4 to rotate synchronously, so as to realize the synchronous switching between the storage state and the unfolded state of the armrest assembly 3 and the foot assembly 4.

[0042] Specifically, the control component 6 includes a first rotating shaft 61, a rotating shaft connecting rod 62 and a second rotating shaft 63 which are connected to each other. The first rotating shaft 61 is arranged at the top position of the front support frame 1, that is, at the top position of the column 12. The second rotating shaft 63 is arranged at the bottom position of the front support frame 1, that is, on the fixed frame 11. The support leg assembly 4 is hinged to the bottom position of the front support frame 1, that is, it is hinged to the fixed frame 11. The armrest assembly 3 is connected to the first rotating shaft 61, and the support leg assembly 4 is connected to the second rotating shaft 63. The armrest assembly 3 can rotate relative to the column 12 through the first rotating shaft 61 and drive the second rotating shaft 63 to rotate, thereby driving the support leg assembly 4 to rotate synchronously.

[0043] Preferably, in order to improve the reliability of the armrest assembly 3 when in use, a self-locking assembly 7 is provided in the armrest assembly 3 of this embodiment, and the self-locking assembly 7 can lock the armrest assembly 3 in the unfolded state to prevent the armrest assembly 3 from folding during use by the user and causing an accident.

[0044] The self-locking assembly 7 includes a self-locking cylinder 71 and a latch 72. The self-locking cylinder 71 is provided with a slot 711 that matches the latch 72. The self-locking cylinder 71 is fixedly arranged at the top position of the column 12. The latch 72 is movably connected to the armrest assembly 3. When the armrest assembly 3 is in the unfolded state, the latch 72 can be inserted into the slot 711 of the self-locking cylinder 71 to prevent the armrest assembly 3 from rotating.

[0045] In order to facilitate users to lock or unlock the armrest assembly 3, the latch 72 is connected to the elastic component, which can continuously provide force for the latch 72 to be inserted into the slot 711 of the self-locking cylinder 71, so as to improve the reliability of the latch 72 when in use. The latch 72 is connected to the shift block 73, which is slidably connected to the armrest assembly 3. The shift block 73 is provided with a shifting surface with ridges that fits the fingers. When the finger shifts the shift block 73, it can overcome the force of the elastic component and pull the latch 72 out of the slot 711 of the self-locking cylinder 71 to achieve unlocking. At this time, the armrest assembly 3 can be switched from the deployed state to the retracted state. In addition, if Figure 10 As shown, when the armrest assembly 3 switches from the stowed state to the deployed state, under the action of the elastic component, the end of the pin 72 remains in contact with the arc surface of the self-locking cylinder 71 until the armrest assembly 3 rotates to the deployed state. Under the action of the elastic component, the pin 72 is automatically inserted into the slot 711 of the self-locking cylinder 71 to achieve the self-locking function.

[0046] Preferably, in order to improve the stability of the moving trajectory of the latch pin 72, the self-locking assembly 7 of this embodiment also includes a guide column 75, one end of the guide column 75 is fixedly connected to the latch pin 72 and is arranged parallel to the latch pin 72, and the other end of the guide column 75 is movably plugged into the first rotating shaft 61. Since the moving path of the guide column 75 is determined, the stability of the latch pin 72 during the plugging and unplugging process can be guaranteed.

[0047] The self-locking component 7 of this embodiment further includes an L-shaped connecting plate 76. One end of the L-shaped connecting plate 76 is fixedly connected to the guide post 75, and the other end of the L-shaped connecting plate 76 is connected to the dial block 73 and the latch 72. In addition, the elastic component can be a tension spring. One end of the tension spring is fixedly connected to the L-shaped connecting plate 76, and the other end is fixedly connected to the first rotating shaft 61 or the armrest component 3. It can be understood that the elastic component can also be in other forms, as long as it can continuously provide a force for the latch 72 to insert into the slot 711 of the self-locking cylinder 71.

[0048] As Figure 9 shown, the foot support component 4 is hinged to the fixed frame 11 through the third rotating shaft 41. The control component 6 further includes a driving link 64. Eccentric flanges are respectively arranged on the second rotating shaft 63 and the third rotating shaft 41. One end of the driving link 64 is connected to the eccentric flange of the second rotating shaft 63, and the other end of the driving link 64 is connected to the eccentric flange of the third rotating shaft 41, so that the second rotating shaft 63 and the third rotating shaft 41 are linked. By setting the driving link 64, the position setting of the foot support component 4 can be made more flexible to adapt to different models of treadmills. Preferably, in order to reduce the resistance when the foot support component 4 is folded and unfolded, a universal wheel is arranged at the end of the foot support component 4 far from the hinge with the fixed frame 11.

[0049] The structure of the present invention is ingeniously designed, convenient for storage and deployment. After the front and rear treadmills are folded, they can be further folded to a vertical state. Moreover, both the armrest component and the foot support component can be folded and stored, and the compactness in the storage state is high, which can greatly reduce the occupied space of the fitness equipment; in addition, the armrest component and the foot support component are linked, making storage and deployment more convenient and faster; finally, by setting the slope adjustment component, stepless adjustment of the treadmill slope can be realized, greatly improving the user experience.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A multi-folding treadmill, characterized in that: The treadmill comprises a foldable treadmill, which comprises a front treadmill and a rear treadmill which are hinged to each other, the front treadmill being hinged to the front support frame at one end away from the rear treadmill, an armrest assembly being arranged above the front support frame, and a support leg assembly being arranged below the front support frame; when folded, the rear treadmill can be flipped up and covered on the front treadmill, and the front treadmill can drive the rear treadmill as a whole to rotate to a vertical state relative to the front support frame to complete the folding and storage of the front and rear treadmills, the armrest assembly and the support leg assembly are arranged in linkage, and the armrest assembly and the support leg assembly can be synchronously bent toward the inner side of the front support frame to realize the storage and folding of the treadmill as a whole.

2. The multi-folding treadmill according to claim 1, characterized in that: The front support frame includes a fixed frame, a column assembly is vertically arranged above the fixed frame, a slide seat is slidably arranged on one end of the column assembly close to the fixed frame, the end of the front treadmill is hinged to the slide seat, and the lower part of the front end of the front treadmill is connected to the slope adjustment assembly, and the slope adjustment assembly can drive the slide seat and the end of the front treadmill to move up and down with the rear end of the rear treadmill as the fulcrum to achieve the effect of adjusting the slope.

3. The multi-folding treadmill according to claim 2, characterized in that: The slope adjustment component includes a lifting bracket, a lifting leg and a lifting connecting rod. One end of the lifting bracket is hinged to the front running platform, and the other end of the lifting bracket is slidably set on the fixed frame. One end of the lifting leg is hinged to the end of the front running platform close to the rear running platform, and the other end of the lifting leg is in contact with the ground. The two ends of the lifting connecting rod are respectively hinged to the lifting bracket and the lifting leg. The lifting bracket, the front running platform, the lifting leg and the lifting connecting rod are arranged to form a quadrilateral structure.

4. The multi-folding treadmill according to claim 3, characterized in that: Rollers are arranged under the lifting bracket and the lifting legs. The rollers of the lifting bracket can slide relative to the fixed frame, and the rollers of the lifting legs can slide relative to the ground.

5. The multi-folding treadmill according to claim 4, characterized in that: The fixed frame is provided with a track for the rollers of the lifting bracket to slide. The track is fixedly arranged on the inner side of the fixed frame. The track includes a top plate, a bottom plate and a limit plate. The top plate and the bottom plate together limit the moving trajectory of the rollers of the lifting bracket to remain horizontal. The limit plate can limit the moving distance of the rollers of the lifting bracket.

6. The multi-folding treadmill according to claim 5, characterized in that: A roller entrance and exit is set on the top plate of the track. When the slope of the treadmill is adjusted to horizontal, the rollers of the lifting bracket correspond to the roller entrance and exit. When the treadmill is stored and folded, the rollers of the lifting bracket can be moved out from the roller entrance and exit. When the treadmill is unfolded from a vertical state, the rollers of the lifting bracket can enter the track from the roller entrance and exit.

7. The multi-folding treadmill according to claim 1, characterized in that: The armrest assembly is connected to the foot assembly through a control assembly, and the control assembly includes a first rotating shaft, a rotating shaft connecting rod and a second rotating shaft connected to each other. The first rotating shaft is arranged at the top position of the front support frame, and the second rotating shaft is arranged at the bottom position of the front support frame. The foot assembly is hinged to the bottom of the front support frame, the armrest assembly is connected to the first rotating shaft, and the foot assembly is connected to the second rotating shaft. The armrest assembly can rotate relative to the column through the first rotating shaft and drive the second rotating shaft to rotate, thereby driving the foot assembly to rotate synchronously.

8. The multi-folding treadmill according to claim 1, characterized in that: A self-locking component is arranged in the armrest component, and the self-locking component can lock the armrest component in the unfolded state.

9. The multi-folding treadmill according to claim 8, characterized in that: The self-locking component includes a self-locking cylinder and a latch. The self-locking cylinder is provided with a slot matching the latch. The self-locking cylinder is fixedly arranged at the top position of the column. The latch is movably connected to the armrest component. The latch is connected to the elastic component. The elastic component can continuously provide force for the latch to be inserted into the slot. The latch is connected to the shift block, and the shift block is slidably connected to the armrest component.

10. The multi-folding treadmill according to claim 9, characterized in that: The self-locking component also includes a guide column, one end of which is fixedly connected to the latch and arranged parallel to the latch, and the other end of the guide column is movably plugged into the first rotating shaft.

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