Folding mechanism for running board of running machine and running machine

Abstract

The utility model relates to a folding mechanism for running boards of a running machine and the running machine, the folding mechanism comprises a frame body and a shaft pin assembly, the frame body comprises a first frame for supporting a first running board and a second frame for supporting a second running board; the shaft pin assembly comprises a shaft pin body, a first shaft pin connecting piece and a second shaft pin connecting piece, the shaft pin body is located on the side, in the first direction, of the frame body, the first shaft pin connecting piece is arranged on the first frame and fixedly connected with the shaft pin body, and the second shaft pin connecting piece is arranged on the second frame and rotationally connected with the shaft pin body; therefore, the frame body can be switched between an unfolded state and a folded state; when the frame body is in the unfolded state, the first frame and the second frame are sequentially arranged in the second direction, the first running plate and the second running plate are located on the same plane, and when the frame body is in the folded state, the first frame is located on the side, in the first direction, of the second frame, and the second running plate is contained on the first running plate. The folding mechanism is simple in structure, small in size and easy to fold.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of fitness equipment, in particular to a folding mechanism for a treadmill running board and a treadmill. BACKGROUND

[0002] As a kind of fitness equipment, the treadmill generally includes a treadmill frame, a running board, a running belt and a driving assembly. However, the running platform composed of the treadmill frame and the running board and the running belt occupies a large space, which is not only high in transportation cost, but also inconvenient to store.

[0003] In the prior art, the problem of large space occupation of the treadmill is solved by designing the treadmill into a foldable structure. However, the folding mechanism used in the existing foldable treadmill is complex in structure and large in size, which makes the user operate laboriously and inconvenient to maintain.

[0004] Therefore, it is necessary to provide a new technical scheme to improve one or more problems in the above-mentioned scheme.

[0005] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present disclosure, and therefore can include information that does not constitute prior art known to those skilled in the art. CONTENT OF THE UTILITY MODEL

[0006] The purpose of the embodiments of the present disclosure is to provide a folding mechanism for a treadmill running board, which is simple in structure, small in size and easy to operate when folding the treadmill.

[0007] According to a first aspect of the embodiments of the present disclosure, a folding mechanism for a treadmill running board is provided, comprising:

[0008] a frame body including a first frame and a second frame, the first frame being used to support a first running board, and the second frame being used to support a second running board;

[0009] a shaft pin assembly including a shaft pin body, a first shaft pin connecting piece and a second shaft pin connecting piece, the shaft pin body being located on one side of the frame body along a first direction, the first shaft pin connecting piece being arranged on the first frame and fixedly connected with the shaft pin body, and the second shaft pin connecting piece being arranged on the second frame and rotatably connected with the shaft pin body, so that the frame body can be switched between an unfolded state and a folded state;

[0010] wherein, when the frame body is in the unfolded state, the first frame and the second frame are arranged in sequence along a second direction, and the first running board and the second running board are located in the same plane; when the frame body is in the folded state, the first frame is located on one side of the second frame along the first direction, and the second running board can be accommodated on the first running board.

[0011] The first direction is a height direction of the treadmill, and the second direction is a front-rear direction of the treadmill.

[0012] In an example embodiment of the present disclosure, the first shaft pin connector includes a first connecting plate and a first shaft pin sleeve, the first connecting plate is arranged on the first frame and extends along the first direction, and the first shaft pin sleeve is connected to an end of the first connecting plate along the first direction and is fixedly sleeved on the shaft pin body.

[0013] In an example embodiment of the present disclosure, the second shaft pin connector includes a second connecting plate and a second shaft pin sleeve, the second connecting plate is arranged on the second frame and extends along the first direction, and the second shaft pin sleeve is connected to an end of the second connecting plate along the first direction and is rotatably sleeved on the shaft pin body.

[0014] In an example embodiment of the present disclosure, the first shaft pin sleeve includes a first sleeve ring and a second sleeve ring, the first sleeve ring and the second sleeve ring are arranged in an axial direction of the shaft pin body;

[0015] In an example embodiment of the present disclosure, the second shaft pin sleeve is located between the first sleeve ring and the second sleeve ring in the axial direction of the shaft pin body, and the axial direction of the shaft pin body is perpendicular to the first direction and the second direction.

[0016] In an example embodiment of the present disclosure, the shaft pin body includes a first shaft body and a second shaft body extending in the axial direction of the shaft pin body, the second shaft body is connected to an end of the first shaft body away from the frame body, and a diameter of the second shaft body is smaller than a diameter of the first shaft body;

[0017] In an example embodiment of the present disclosure, the first shaft pin sleeve and the second shaft pin sleeve are sleeved on the second shaft body, and the first sleeve ring is located between the first shaft body and the second shaft pin sleeve in the axial direction of the shaft pin body.

[0018] In an example embodiment of the present disclosure, a fastener is threadedly connected to an end of the second shaft body away from the first shaft body, and the fastener abuts against the second sleeve ring when the fastener is fastened to the second shaft body.

[0019] In an example embodiment of the present disclosure, a gasket is sleeved on the fastener, and the gasket abuts against the second shaft body and the second sleeve ring when the fastener is fastened to the second shaft body.

[0020] In an example embodiment of the present disclosure, an outer diameter of the first sleeve ring, an outer diameter of the second sleeve ring, and an outer diameter of the second shaft pin sleeve are the same as an outer diameter of the first shaft body.

[0021] According to a second aspect of the embodiments of the present disclosure, a treadmill is provided, comprising a running belt, a running board module, a driving module, and the folding mechanism for the running board of the treadmill as described above,

[0022] The running board module comprises a first running board and a second running board, the first running board is arranged on the first frame, and the second running board is arranged on the second frame.

[0023] The running belt is sleeved on the running board module.

[0024] The driving module is installed on the frame body and used for driving the running belt.

[0025] In an exemplary embodiment of the present disclosure, the driving module comprises a motor, a front roller and a rear roller, the motor and the front roller are arranged on the first frame, and the front roller is connected to the output end of the motor, and the rear roller is arranged on the second frame.

[0026] When the frame body is in the unfolded state, the two ends of the running belt are respectively laid on the front roller and the rear roller in the second direction.

[0027] The technical solutions provided by the present disclosure can have the following beneficial effects:

[0028] In the embodiments of the present disclosure, the first shaft pin connector is arranged on the first frame and fixedly connected with the shaft pin body, and the second shaft pin connector is arranged on the second frame and rotatably connected with the shaft pin body, so as to rotatably connect the first frame and the second frame around the shaft pin body, and further switch the frame body between the unfolded state and the folded state; when the frame body is in the unfolded state, the first frame and the second frame are arranged in sequence along the front-rear direction of the treadmill, and the first running board and the second running board are located in the same plane to form a running platform for the user to tread on; when the frame body is in the folded state, the first frame and the second frame are arranged along the height direction of the treadmill, and the second running board can be accommodated on the first running board, so as to facilitate the transportation and storage of the treadmill. The shaft pin assembly is used to fold and accommodate the running board of the treadmill in this embodiment, and the shaft pin assembly has the advantages of simple structure, small size, and easy folding and unfolding of the treadmill by rotating the second frame relative to the first frame.

[0029] It should be understood that the foregoing general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0030] The accompanying drawings, which are incorporated herein and constitute part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, further serve to explain the principles of the present disclosure. It is apparent that the accompanying drawings depicted are only some embodiments of the present disclosure and that other drawings can be obtained by those skilled in the art without creative effort based on these drawings.

[0031] Figure 1 A structure diagram of a folding mechanism for a treadmill running board in an unfolded state is shown in the exemplary embodiment of the present disclosure. Figure 1 ;

[0032] Figure 2 An enlarged view of A in FIG. 1 is shown. Figure 1 ;

[0033] Figure 3 A structure diagram of a folding mechanism for a treadmill running board in a folded state is shown in the exemplary embodiment of the present disclosure.

[0034] Figure 4 A structure diagram of a folding mechanism for a treadmill running board in an unfolded state is shown in the exemplary embodiment of the present disclosure. Figure 2 ;

[0035] Figure 5 An enlarged view of B in FIG. 2 is shown. Figure 4 ;

[0036] Figure 6 A structure diagram of a shaft pin assembly is shown in the exemplary embodiment of the present disclosure.

[0037] Figure 7 A structure exploded diagram of a shaft pin assembly is shown in the exemplary embodiment of the present disclosure.

[0038] Figure 8 A structure diagram of a treadmill is shown in the exemplary embodiment of the present disclosure. Figure 1 ;

[0039] Figure 9 A structure diagram of a treadmill is shown in the exemplary embodiment of the present disclosure. Figure 2 .

[0040] Reference Signs:

[0041] 100, frame body; 110, first frame; 111, first support; 112, first connecting piece; 120, second frame; 121, second support; 122, second connecting piece; 130, foot pad

[0042] 200, axle pin assembly; 210, axle pin body; 211, first axle body; 212, second axle body; 2120, threaded hole; 220, first axle pin connector; 221, first connecting plate; 222, first axle pin sleeve; 2221, first sleeve ring; 2222, second sleeve ring; 230, second axle pin connector; 231, second connecting plate; 232, second axle pin sleeve; 240, fastener; 241, washer;

[0043] 310, first running board; 320, second running board; 400, running belt; 510, front roller; 520, rear roller. DETAILED DESCRIPTION

[0044] Example implementations are now described in greater detail with reference to the figures. Like reference numerals can be used to denote like elements throughout the description. The example implementations can be implemented in numerous ways, and examples of implementations are set forth herein with the understanding that the herein-described examples are presented as illustrative examples only and are not intended to reflect or dictate a functioning of the only examples of implementations. Indeed, many implementations can be made and are included within the scope of features as set forth in the appended claims. Thus, the example implementations are not intended to be limited to the examples described herein; rather, they are to be accorded the broadest scope possible under the law.

[0045] Further, the drawings are diagrammatic and schematic representations of the example implementations, and are not intended to be to scale. The same reference numerals in different drawings represent the same or similar elements.

[0046] In the present example implementation, a folding mechanism for a treadmill running board is first provided, with reference to Figure 1As shown in FIG. 1, the folding mechanism for the treadmill running board comprises a frame body 100 and a shaft pin assembly 200, the frame body 100 comprises a first frame 110 and a second frame 120, the first frame 110 is used for supporting a first running board 310, and the second frame 120 is used for supporting a second running board 320; the shaft pin assembly 200 comprises a shaft pin body 210, a first shaft pin connecting piece 220 and a second shaft pin connecting piece 230, the shaft pin body 210 is located at one side of the frame body 100 along a first direction, the first shaft pin connecting piece 220 is arranged on the first frame 110 and fixedly connected with the shaft pin body 210, and the second shaft pin connecting piece 230 is arranged on the second frame 120 and rotatably connected with the shaft pin body 210, so that the frame body 100 can be switched between an unfolded state and a folded state; wherein, when the frame body 100 is in the unfolded state, the first frame 110 and the second frame 120 are arranged in sequence along a second direction, and the first running board 310 and the second running board 320 are located in the same plane, and when the frame body 100 is in the folded state, the first frame 110 is located at one side of the second frame 120 along the first direction, and the second running board 320 can be accommodated on the first running board 310.

[0047] It should be noted that the first direction is the height direction of the treadmill, see the direction indicated by arrow ab in FIG. 1; and the second direction is the front-rear direction of the treadmill, see the direction indicated by arrow cd in FIG. 1. Figure 1 Figure 1 It should be noted that the first direction is the height direction of the treadmill, see the direction indicated by arrow ab in FIG. 1; and the second direction is the front-rear direction of the treadmill, see the direction indicated by arrow cd in FIG. 1.

[0048] In the embodiment of the present disclosure, the first shaft pin connecting piece 220 is arranged on the first frame 110 and fixedly connected with the shaft pin body 210, and the second shaft pin connecting piece 230 is arranged on the second frame 120 and rotatably connected with the shaft pin body 210, so as to rotatably connect the first frame 110 and the second frame 120 around the shaft pin body 210, and further switch the frame body 100 between the unfolded state and the folded state; when the frame body 100 is in the unfolded state, the first frame 110 and the second frame 120 are arranged in sequence along the front-rear direction of the treadmill, and the first running board 310 and the second running board 320 are located in the same plane to form a running track for the user to tread on; when the frame body 100 is in the folded state, the first frame 110 and the second frame 120 are arranged along the height direction of the treadmill, and the second running board 320 can be accommodated on the first running board 310, so as to facilitate the transportation and storage of the treadmill. In the embodiment, the shaft pin assembly 200 is used to fold and accommodate the running board of the treadmill, and the shaft pin assembly 200 has the advantages of simple structure, small size and easy operation.

[0049] In the following, the folding mechanism for the treadmill running board will be described in detail with reference to the accompanying drawings. Figures 1 to 7 ​The folding mechanism for the treadmill running board in the present example embodiment will be described in more detail.

[0050] Optionally, as shown in Figure 3 The first frame 110 includes two first support members 111 and at least one first connecting member 112, the first connecting member 112 extends along the third direction, and the first support members 111 and the first connecting member 112 are arranged perpendicularly; wherein the two first support members 111 are arranged spaced apart along the third direction, and the two ends of the first connecting member 112 are connected to the two first support members 111 respectively; wherein the third direction is the width direction of the treadmill, see the direction indicated by arrow ef in Figure 1 The first frame 110 provides stable support for the first running board 310.

[0051] Optionally, as shown in Figure 3 The second frame 120 includes two second support members 121 and at least one second connecting member 122, the second connecting member 122 extends along the third direction, and the second support members 121 and the second connecting member 122 are arranged perpendicularly; wherein the two second support members 121 are arranged spaced apart along the third direction, and the two ends of the second connecting member 122 are connected to the two second support members 121 respectively. The second frame 120 provides stable support for the second running board 320.

[0052] It should be noted that in the present embodiment, two shaft pin assemblies 200 are provided, one first support member 111 and one second support member 121 are configured with one shaft pin assembly 200, so that the first frame 110 can rotate relative to the second frame 120 about the shaft pin body 210.

[0053] As shown in Figure 1 and Figure 4 When the frame body 100 is in the unfolded state, along the second direction, the two first support members 111 and the two second support members 121 are arranged one by one and face each other, and one shaft pin assembly 200 is arranged between one first support member 111 and one second support member 121 which face each other. As shown in Figure 3 When the frame body 100 is in the folded state, along the first direction, the two first support members 111 and the two second support members 121 are arranged one by one and face each other, and the second support members 121 are located on one side of the first support members 111 along the first direction.

[0054] Optionally, as shown in Figure 3 The frame body 100 is further provided with a foot pad 130, the foot pad 130 can be installed on the first support member 111, the first connecting member 112, the second support member 121 or the second connecting member 122, and supports the first frame 110 and the second frame 120.

[0055] In one embodiment, reference Figures 4 to 7 As shown in , the first axle pin connector 220 includes a first connecting plate 221 and a first axle pin sleeve 222. The first connecting plate 221 is provided on the first frame 110 and extends along the first direction. The first axle pin sleeve 222 is connected to the end of the first connecting plate 221 along the first direction and is fixedly sleeved on the axle pin body 210. With the above-mentioned structural arrangement of the first axle pin connector 220, on the one hand, the first connecting plate 221 can be used to ensure that the first axle pin connector 220 is firmly connected to the first frame 110, and on the other hand, the first axle pin sleeve 222 can be used to ensure that the first axle pin connector 220 is firmly connected to the axle pin body 210.

[0056] In one embodiment, reference Figures 4 to 7 As shown in , the second axle pin connector 230 includes a second connecting plate 231 and a second axle pin sleeve 232. The second connecting plate 231 is provided on the second frame 120 and extends along the first direction. The second axle pin sleeve 232 is connected to the end of the second connecting plate 231 along the first direction and is rotatably sleeved on the axle pin body 210. The above-described structural arrangement of the second axle pin connector 230 can, on the one hand, utilize the second connecting plate 231 to ensure a stable connection between the second axle pin connector 230 and the second frame 120. On the other hand, the second axle pin sleeve 232 can ensure a reliable rotational connection between the second axle pin connector 230 and the axle pin body 210.

[0057] Optionally, the first connecting plate 221 is disposed at one end of the first supporting member 111 along the second direction, and the second connecting plate 231 is disposed at one end of the second supporting member 121 along the second direction. Figure 1 and Figure 4 As shown in , when the frame 100 is in the unfolded state, the first connecting plate 221 and the second connecting plate 231 are located between the first frame 110 and the second frame 120, and the first connecting plate 221 and the second connecting plate 231 are in contact with each other; Figure 3 As shown in the figure, when the frame 100 is in a folded state, the first connecting plate 221 and the second connecting plate 231 are spaced apart and arranged opposite to each other along the first direction, and along the first direction, the axle pin body 210 and the first axle pin sleeve 222 and the second axle pin sleeve 232 provided on the axle pin body 210 are located between the first connecting plate 221 and the second connecting plate 231.

[0058] For further reference, Figures 5 to 7 As shown in , the first shaft pin sleeve 222 includes a first ring 2221 and a second ring 2222, and the first ring 2221 and the second ring 2222 are spaced apart along the axial direction of the shaft pin body 210;

[0059] The second pin sleeve 232 is located between the first sleeve ring 2221 and the second sleeve ring 2222 along the axial direction of the pin body 210 , and the axial direction of the pin body 210 is perpendicular to the first direction and the second direction.

[0060] In the above-mentioned structural setting, on the one hand, by further setting the first pin sleeve 222 into a structure of a first ring 2221 and a second ring 2222, the connection stability between the first pin connector 220 and the pin body 210 is improved. On the other hand, by setting the second pin sleeve 232 between the first ring 2221 and the second ring 2222, the rotational connection stability between the second pin connector 230 and the pin body 210 is improved.

[0061] In one embodiment, reference Figures 5 to 7 As shown in , the shaft pin body 210 includes a first shaft body 211 and a second shaft body 212 extending along the axial direction of the shaft pin body 210, the second shaft body 212 is connected to one end of the first shaft body 211 facing the outside of the frame body 100, and the diameter of the second shaft body 212 is smaller than the diameter of the first shaft body 211;

[0062] The first axle pin sleeve 222 and the second axle pin sleeve 232 are sleeved on the second axle body 212 , and along the axial direction of the axle pin body 210 , the first sleeve ring 2221 is located between the first axle body 211 and the second axle pin sleeve 232 .

[0063] The above-mentioned further design of the structure of the shaft pin body 210 not only ensures that the shaft pin body 210 is firmly connected with the first shaft pin sleeve 222 and the second shaft pin sleeve 232 , but also can minimize the volume of the shaft pin body 210 .

[0064] For further reference, Figures 5 to 7 As shown in FIG, a fastener 240 is threadedly connected to one end of the second shaft 212 away from the first shaft 211. When the fastener 240 is fastened to the second shaft 212, the fastener 240 abuts against the second collar 2222. The fastener 240 is provided on the second shaft 212 to secure the first shaft sleeve 222 relative to the shaft pin body 210. This allows the second shaft sleeve 232 to rotate relative to the shaft pin body 210 about the axial direction of the shaft pin body 210 when the second frame 120 is flipped over to fold the treadmill.

[0065] Optional, reference Figures 5 to 7 As shown in , a threaded hole 2120 is formed at one end of the second shaft 212 away from the first shaft 211 , and the fastener 240 is threadedly connected to the threaded hole 2120 , which facilitates the maintenance of the folding mechanism and the replacement of parts of the shaft pin assembly 200 .

[0066] Optionally, as shown in Figures 5 to 7 A gasket 241 is sleeved on the fastener 240, and the gasket 241 abuts against the second shaft body 212 and the second collar 2222 when the fastener 240 is fastened to the second shaft body 212. By providing the gasket 241, the fastening effect of the fastener 240 can be improved, and the surface of the second collar 2222 and the second shaft body 212 can be prevented from being scratched when the fastener 240 is fastened.

[0067] Optionally, the outer diameter of the first collar 2221, the outer diameter of the second collar 2222, and the outer diameter of the second shaft pin sleeve 232 are the same as the outer diameter of the first shaft body 211. By limiting the sizes of the first collar 2221, the second collar 2222, and the second shaft pin sleeve 232, the outer circumferential surface of the first shaft body 211 is flush with the outer circumferential surfaces of the first collar 2221, the second collar 2222, and the second shaft pin sleeve 232, and the entire shaft pin body 210 is free of protrusions, thereby improving safety and aesthetics.

[0068] The example embodiment also provides a treadmill, as shown in Figure 8 and Figure 9 The treadmill includes a running belt 400, a running board module, a driving module, and the folding mechanism for the running board of the treadmill described above. The running board module includes a first running board 310 and a second running board 320. The first running board 310 is arranged on the first frame 110, and the second running board 320 is arranged on the second frame 120. The running belt 400 is sleeved on the running board module, and the driving module is installed on the frame body 100 and used to drive the running belt 400.

[0069] The treadmill provided by the example embodiment can store the second running board 320 of the running board module on the first running board 310 by using the folding mechanism when the treadmill is not used, so that the running board of the treadmill is folded and stored, the space occupied by the treadmill is reduced, and the transportation and storage of the treadmill are facilitated.

[0070] In one embodiment, the driving module includes a motor, a front roller 510, and a rear roller 520. The motor and the front roller 510 are arranged on the first frame 110, and the front roller 510 is connected to the output end of the motor. The rear roller 520 is arranged on the second frame 120.

[0071] When the frame body 100 is in the unfolded state, the two ends of the running belt 400 are arranged on the front roller 510 and the rear roller 520 in the second direction, respectively.

[0072] In this embodiment, the front roller 510 is rolled by the motor of the driving module, the front roller 510 drives the running belt 400 to move, and then the rear roller 520 rotates under the movement of the running belt 400, so that the running belt 400 moves stably under the driving effect of the driving module, and then cooperates with the running board module and the frame 100 to form a treadmill for the user to tread.

[0073] Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the features disclosed herein. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the disclosure being indicated by the following claims.

Claims

1. A folding mechanism for a treadmill deck, comprising: The folding mechanism for the treadmill running board comprises a running belt, a running board module, a driving module and the folding mechanism for the running board of the treadmill according to any one of claims 1 to 8. The folding mechanism for the running board of the treadmill comprises: a frame body comprising a first frame and a second frame, the first frame being used for supporting a first running board, and the second frame being used for supporting a second running board; a shaft pin assembly comprising a shaft pin body, a first shaft pin connecting piece and a second shaft pin connecting piece, the shaft pin body being located at one side of the frame body along a first direction, the first shaft pin connecting piece being arranged on the first frame and fixedly connected with the shaft pin body, and the second shaft pin connecting piece being arranged on the second frame and rotatably connected with the shaft pin body, so that the frame body can be switched between an unfolded state and a folded state; wherein, when the frame body is in the unfolded state, the first frame and the second frame are arranged in sequence along a second direction, and the first running board and the second running board are located in the same plane, and when the frame body is in the folded state, the first frame is located at one side of the second frame along the first direction, and the second running board can be accommodated on the first running board; 2. The folding mechanism for a treadmill deck as recited in claim 1, wherein, the first direction is the height direction of the treadmill, and the second direction is the front-rear direction of the treadmill.

3. The folding mechanism for a treadmill deck as set forth in claim 2, wherein, the first shaft pin connecting piece comprises a first connecting plate and a first shaft pin sleeve, the first connecting plate is arranged on the first frame and extends along the first direction, and the first shaft pin sleeve is connected to the end of the first connecting plate along the first direction and fixedly sleeved on the shaft pin body.

4. The folding mechanism for a treadmill deck according to claim 3, wherein, the second shaft pin connecting piece comprises a second connecting plate and a second shaft pin sleeve, the second connecting plate is arranged on the second frame and extends along the first direction, and the second shaft pin sleeve is connected to the end of the second connecting plate along the first direction and rotatably sleeved on the shaft pin body. the first shaft pin sleeve comprises a first sleeve ring and a second sleeve ring, the first sleeve ring and the second sleeve ring are arranged in sequence along the axial direction of the shaft pin body; 5. The folding mechanism for a treadmill deck as set forth in claim 4, wherein, wherein, along the axial direction of the shaft pin body, the second shaft pin sleeve is located between the first sleeve ring and the second sleeve ring, and the axial direction of the shaft pin body is perpendicular to the first direction and the second direction. the shaft pin body comprises a first shaft body and a second shaft body extending along the axial direction of the shaft pin body, the second shaft body is connected to one end of the first shaft body away from the outside of the frame body, and the diameter of the second shaft body is smaller than that of the first shaft body; 6. The folding mechanism for a treadmill deck as set forth in claim 5, wherein, wherein, the first shaft pin sleeve and the second shaft pin sleeve are sleeved on the second shaft body, and along the axial direction of the shaft pin body, the first sleeve ring is located between the first shaft body and the second shaft pin sleeve.

7. The folding mechanism for a treadmill deck as set forth in claim 6, wherein, a fastener is threadedly connected to one end of the second shaft body away from the first shaft body, when the fastener is fastened with the second shaft body, the fastener abuts against the second sleeve ring.

8. The folding mechanism for a treadmill deck according to any of claims 5-7, wherein, a gasket is sleeved on the fastener, when the fastener is fastened with the second shaft body, the gasket abuts against the second shaft body and the second sleeve ring.

9. An exercise machine, comprising: the outer diameter of the first sleeve ring, the outer diameter of the second sleeve ring and the outer diameter of the second shaft pin sleeve are the same as the outer diameter of the first shaft body. the folding mechanism for the running board of the treadmill comprises: The running board module comprises a first running board and a second running board, the first running board is arranged on the first frame, and the second running board is arranged on the second frame; The running belt is sleeved on the running board module; The driving module is installed on the frame body and used for driving the running belt.

10. The treadmill of claim 9, wherein, The driving module comprises a motor, a front roller and a rear roller, the motor and the front roller are arranged on the first frame, the front roller is connected to the output end of the motor, and the rear roller is arranged on the second frame; When the frame body is in the unfolded state, the two ends of the running belt are respectively arranged on the front roller and the rear roller in the second direction.

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