Manually Adjustable Lifting Mechanisms and Treadmills

Abstract

To provide a manually adjustable treadmill lift mechanism. [Solution] The lifting mechanism includes a frame (10), two first support structures (30) mounted at the first end (10a) of the frame, and two second support structures (40) mounted at the second end (10b) of the frame. The second support structure includes a second leg (401), a positioning plate (403), and a support rod (402). A chute is mounted on the side of the positioning plate, and a positioning notch is mounted on one side of the chute in the longitudinal direction. The support rod is rotatably connected to the second leg, and a positioning block is mounted on the support rod, which can slide within the chute. Because it is manually adjusted, manufacturing and maintenance costs are relatively low compared to lifting mechanisms driven by a motor. Support structures are mounted on both ends of the treadmill frame, allowing the treadmill's incline to be adjusted to a positive incline, a negative incline, or horizontal.

Description

[Technical Field]

[0001] SUMMARY OF THE INVENTION The present invention relates to manually adjustable lift mechanisms and treadmills. [Background technology]

[0002] The lifting function of conventional treadmills is achieved by electric lifting motors, which requires relatively high manufacturing costs. Furthermore, conventional treadmills all use a positive incline (positive incline: the front end of the running deck is relatively high and the rear end of the running deck is relatively low, so that when the user faces the running deck, the running deck is in an uphill position), which means that the training modes are relatively single. Summary of the Invention [Problem to be solved by the invention]

[0003] SUMMARY OF THE INVENTION Embodiments of the present application provide a manually adjustable lift mechanism and treadmill to address at least one technical deficiency in the prior art. [Means for solving the problem]

[0004] A first aspect of an embodiment of the present application provides a manually adjustable lifting mechanism, comprising: a frame having a first end and a second end opposite in a longitudinal direction thereof; two first support structures provided at the first end of the frame and provided on opposite sides of the longitudinal direction of the frame, the first support structures having first legs pivotably connected to the frame at their first ends and selectively pivotable between a supported state and a folded state; and two second support structures provided at the second end of the frame and provided on opposite sides of the longitudinal direction of the frame, the second support structures having second legs pivotably connected to the frame at their first ends and fixedly connected to the frame; the second leg selectively rotates toward the support surface and can drive the support rod to cause the position restriction block to slide within the chute, and the position restriction block selectively slides into the position restriction notch to lock the support state by the second leg.

[0005] In some embodiments, the chute has a first end away from the second leg and a second end closer to the second leg, and the position-limiting notch is provided in a side wall of the second end of the chute.

[0006] In some embodiments, the length of the chute is parallel to the length of the treadmill, and at least one of the position limiting notches is provided on the side of the chute facing the frame.

[0007] In some embodiments, the extension direction of the position limiting notch forms an acute angle with the longitudinal direction of the chute.

[0008] In some embodiments, the second support structure further includes a spring, one end of the spring acting on the frame and the other end acting on the second leg, the spring providing a driving force for the second leg to pivot to the folded state.

[0009] In some implementations, a link is provided between two of the second support structures, a first end of the link is connected to a support rod of one of the second support structures, and a second end of the link is connected to a support rod of the other second support structure, and the two second support structures are kept synchronized by the link.

[0010] In some implementations, a rotatable wheel is provided at the second end of the second leg.

[0011] In some embodiments, the frame includes at least two frame portions arranged opposite each other, the two frame portions being arranged on either side of the frame in the longitudinal direction, and the two first support structures and the two second support structures being arranged on the two frame portions, respectively.

[0012] In some implementations, at least one negative tilt state is selectably adjusted by cooperation between the first support structure and the second support structure.

[0013] In some implementations, cooperation between the first support structure and the second support structure selectably adjusts to a positive tilt state, a negative tilt state, or a horizontal state.

[0014] In some implementations, the first support structure further includes a support base fixedly connected to the frame, a first end of a first leg pivotally connected to the support base, and the first leg selectively pivots toward a support surface.

[0015] In some implementations, when the first leg is in a supporting state, a first side of the first leg facing the frame abuts the frame.

[0016] When the first leg is in the folded state, a second side surface of the first leg facing the frame abuts against the frame.

[0017] In some embodiments, the support base includes a receiving bottom and a hinge connector, the receiving bottom is fixedly connected to the frame, the hinge connector is fixedly connected to the receiving bottom, the first leg is rotatably connected to the hinge connector, a first groove is provided on the first side surface closer to the second side surface, and when the first leg is in a supporting state, the first groove can accommodate at least a portion of the receiving bottom, and a second groove is provided on the second side surface closer to the first side surface, and when the first leg is in a folded state, the second groove can accommodate at least a portion of the receiving bottom.

[0018] In some implementations, a locking groove is provided on the side of the first leg.

[0019] A second aspect of the present invention provides a treadmill, comprising a running belt and the above-described lifting mechanism, a first roller provided at a first end of the frame, a second roller provided at a second end of the frame, and the running belt surrounding the first roller and the second roller. [Effects of the Invention]

[0020] Compared with the prior art, the present invention has lower manufacturing and maintenance costs compared to manually adjusted, motor-driven lifting mechanisms. Furthermore, the present invention has support structures on both ends of the treadmill frame, allowing the treadmill's incline to be adjusted to positive incline, negative incline, or horizontal as needed. Furthermore, the present invention has a multi-stage adjustment function for negative incline, allowing the angle of negative incline to be adjusted as needed. [Brief explanation of the drawings]

[0021] The drawings constituting a part of this application are intended to provide further understanding of the present application, and the schematic examples and descriptions thereof are used to interpret the present application and do not constitute undue limitations on the present application. [Figure 1] 1 is a structural schematic diagram of a treadmill in an embodiment of the present application from one angle. [Figure 2] 1 is a structural schematic diagram of a treadmill in an embodiment of the present application from one angle. [Figure 3] FIG. 2 is a structural schematic diagram of a first leg portion in an embodiment of the present application. [Figure 4] 1 is a schematic diagram illustrating a first support structure provided below a first frame portion in a folded state according to an embodiment of the present application. FIG. [Figure 5] 1 is a schematic diagram showing a state in which a first support structure is provided below a first frame portion and is in a supporting state in an embodiment of the present application. FIG. [Figure 6] 10 is a schematic diagram illustrating a state in which the first support structure in the embodiment of the present application is in a supporting state and the receiving bottom of the support base is housed in the first groove. [Figure 7] 10 is a schematic diagram illustrating a state in which the first support structure in the embodiment of the present application is in a folded state and the receiving bottom of the support base is housed in the second groove. [Figure 8] FIG. 10 is a schematic diagram showing a second support structure provided below the frame in an embodiment of the present application. [Figure 9] 3A and 3B are structural schematic diagrams of a position regulating plate in an embodiment of the present application. [Figure 10] 1 is a schematic diagram of the structure and relationship of the second leg and support rod in an embodiment of the present application; FIG. [Figure 11] 3A to 3C are schematic diagrams illustrating the first to fourth levels of the second support structure in the embodiment of the present application. [Figure 12] 3A to 3C are schematic diagrams illustrating the first to fourth levels of the second support structure in the embodiment of the present application. [Figure 13]3A to 3C are schematic diagrams illustrating the first to fourth levels of the second support structure in the embodiment of the present application. [Figure 14] 3A to 3C are schematic diagrams illustrating the first to fourth levels of the second support structure in the embodiment of the present application. [Figure 15] 10 is a schematic diagram illustrating a state when a position restricting block in an embodiment of the present application moves a chute of a position restricting plate. FIG. [Figure 16] 1 is a schematic diagram of two inclines of a treadmill in an embodiment of the present application. [Figure 17] 1 is a schematic diagram of two inclines of a treadmill in an embodiment of the present application. [Figure 18] FIG. 2 is a schematic diagram of a treadmill in an embodiment of the present application in a horizontal position. DETAILED DESCRIPTION OF THE INVENTION

[0022] The present application will now be described in detail with reference to the accompanying drawings and examples. Each example is provided as a way of interpreting the present application, not as a limitation of the present application. Indeed, it will be apparent to those skilled in the art that modifications and variations can be made in the present application without departing from the scope or spirit of the present application. For example, features illustrated or described as part of one embodiment can be applied to another embodiment to produce another embodiment. Therefore, the present application preferably includes such modifications and variations provided within the scope of the following claims and their equivalents.

[0023] In the description of this application, the orientations or positional relationships indicated by terms such as "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," and "bottom" are based on the orientations or positional relationships shown in the drawings, and are intended merely to facilitate explanation of the application. The application does not necessarily require configuration or operation in a specific orientation, and should not be understood as a limitation on the application. The terms "connect," "couple," and "provide" as used in this application should be understood broadly, and may refer to, for example, a fixed connection, a detachable connection, a direct connection, an indirect connection via an intermediate member, an electrical connection by wire, a wireless electrical connection, or a connection by wireless communication signal. Those skilled in the art can understand the specific meanings of the above terms according to specific circumstances.

[0024] The drawings show one or more examples of the present application. Numerals and letters refer to features in the drawings in the detailed description. Like or similar symbols in the drawings and description refer to like or similar parts of the present application. As used herein, terms such as "first," "second," and "third" may be used interchangeably and are not intended to distinguish one unit from another and to represent the location or importance of a single unit.

[0025] 1 , according to an embodiment of the present application, a treadmill is provided, which includes a frame 10 and a running belt 201. A first roller 202 is provided at a first end 10a of the frame 10, and a second roller 203 is provided at a second end 10b of the frame 10, with the first roller 202 facing the second roller 203. The frame 10 includes a first frame portion 101 and a second frame portion 102 that are parallel to each other, with the first roller 202 and the second roller 203 being provided between the first frame portion 101 and the second frame portion 102, and both ends of the first roller 202 and the second roller 203 being connected to the first frame portion 101 and the second frame portion 102, respectively. The running belt 201 surrounds the first roller 202 and the second roller 203. In some embodiments, the treadmill further includes a motor 204, which is provided at a first end of the frame 10 as shown, and an output end of the motor 204 is connected to a pulley 2021 of the first roller 202 via a transmission belt, where the pulley 2021 is fixedly attached to the end of the first roller 202. In some embodiments, the treadmill further includes a control circuit 205 for controlling the operation of the motor 204 and the operation of other electronic elements in the treadmill, where the specific configuration and structure of the control circuit 205 are not specifically limited.

[0026] In the present embodiment, a user typically steps onto the treadmill from the second end of the frame 10. Therefore, in the present embodiment, when the first end 10a of the frame 10 is higher than the second end 10b, the treadmill is defined as being in a positive inclination state. Conversely, when the first end 10a of the frame 10 is lower than the second end 10b, the treadmill is defined as being in a negative inclination state. In addition, in the present embodiment, the first end 10a and the second end 10b of the frame 10 are located at opposite ends of the frame 10 in the longitudinal direction, and the longitudinal direction of the frame 10 is also the longitudinal direction of the treadmill, the first frame portion 101, and the second frame portion 102.

[0027] In the embodiment of the present application, both the first end 10a and the second end 10b of the frame 10 are provided with support structures for adjusting the height of both ends, and the inclination of the treadmill is adjusted by the support structures at both ends.

[0028] As shown in Figures 1 and 2, two first support structures 30 are provided at the first end of the frame 10, and the two first support structures 30 are attached symmetrically to the first frame portion 101 and the second frame portion 102.

[0029] As shown in FIGS. 1 to 5 , taking one side of the first frame 101 as an example, in some embodiments, the first support structure 30 is provided on the floor-facing side of the first frame 101. The first support structure 30 includes a first leg 301 and a support base 302. The support base 302 is fixedly connected to the first frame 101, and the first leg 301 has a first end and a second end in opposite directions. The first end of the first leg 301 is rotatably connected to the support base 302 by a shaft, where the axis of the shaft and the floor-facing side of the frame 10 are parallel to each other. The first leg 301 is selectively rotatable about the shaft, and the second end of the first leg 301 is rotatable toward or away from the floor. Here, the second end of the first leg 301 can rotate toward the floor surface and support the first end of the frame 10 so as to stand up.

[0030] 3 , in some embodiments, a first end of the first leg 301 has a first side surface 3011, and a second end of the first leg 301 has a second side surface 3012. The first leg 301 further has a third side surface 3013 and a fourth side surface 3014 in opposite directions, where the third side surface 3013 and the fourth side surface 3014 both extend between the first side surface 3011 and the second side surface 3012. Here, the distance between the first side surface 3011 and the second side surface 3012 is greater than the distance between the third side surface 3013 and the fourth side surface 3014. A shaft hole 3017 is provided at the first end of the first leg 301, and the distance between the shaft hole 3017 and the third side surface 3013 is less than the distance between the shaft hole 3017 and the fourth side surface 3014. The shaft of the first support structure 30 can pass through the shaft hole 3017 and be rotatably connected. The first side surface 3011, the second side surface 3012, the third side surface 3013, and the fourth side surface 3014 are all parallel to the axis of the shaft hole 3017.

[0031] As shown in FIG. 4 (the direction indicated by arrow A in the drawings of the present application is the first end of the frame 10), the drawing shows the first support structure 30 in a folded state, where at least a portion of the third side surface 3013 of the first leg 301 abuts against the first side edge, and the third side surface 3013 abuts against the floor. As shown in FIG. 5, the drawing shows the first support structure 30 in a supported state, where at least a portion of the first side surface 3011 of the first leg 301 abuts against the first side edge, and the second side surface 3012 of the first leg 301 abuts against the floor. Here, the first support structure 30 can be converted from the folded state to the supported state by rotating the first leg 301 along the arrow direction in FIG. 4. The first support structure 30 can be converted from the supported state to the folded state by rotating the first leg 301 along the arrow direction in FIG. 5.

[0032] 5, L1 in the figure is perpendicular to the auxiliary line of the first frame 101, and L2 is the auxiliary line from the first end to the second end of the first leg 301 in the longitudinal direction. As can be seen from the figure, when the first support leg is in the supported state, the angle between its longitudinal auxiliary line L2 and the auxiliary line L1 perpendicular to the first side frame is not 90 degrees. During the process of being supported by the first support structure 30, when the first leg 301 rotates until its longitudinal direction is perpendicular to the first frame 101, it continues to rotate by a predetermined angle α to further stabilize the first leg 301 in the supported state.

[0033] 3, 6, and 7, the support base 302 of the first support structure 30 includes a receiving bottom 3023 and a first hinge connector 3021 and a second hinge connector 3022 provided on the receiving bottom 3023. The first end of the first leg 301 is provided between the first hinge connector 3021 and the second hinge connector 3022 and is rotatably connected thereto. The first side surface 3011 is provided with a first groove 3015 recessed inward on a side closer to the third side surface 3013. When the first support structure 30 is in a supporting state, the first groove 3015 can accommodate at least a portion of the receiving bottom 3023, thereby increasing the contact area between the first side surface 3011 of the first leg 301 and the first frame 101. A second groove 3016 is provided on the third side 3013 closer to the first side 3011, recessed inward, and when the first support structure 30 is in a stored state, the second groove 3016 can accommodate at least a portion of the receiving bottom 3023, thereby increasing the contact area between the third side 3013 of the first leg 301 and the first frame 101.

[0034] 3 , in some embodiments, the first leg 301 further includes a fifth side and a sixth side in opposite directions, each extending between the first side 3011, the second side 3012, the third side 3013, and the fourth side 3014. The fifth side and / or the sixth side may have an inwardly recessed locking groove 3018, so that when the first support structure 30 is transformed between the storage state and the support state, the first leg 301 can have a better pressure point by fitting the fingertips into the locking groove 3018.

[0035] As shown in Figures 1 and 2, two second support structures 40 are provided at the second end of the frame 10, and the two second support structures 40 are attached symmetrically to the first frame portion 101 and the second frame portion 102.

[0036] As shown in Figures 1 and 8, taking one side of the first frame portion 101 as an example, in some embodiments, the second support structure 40 is provided on the side of the first frame portion 101 facing the floor surface, and the second support structure 40 includes a second leg portion 401, a support rod 402, and a position control plate 403.

[0037] As shown in FIG. 8, the first end of the second leg 401 is rotatably connected to the first frame 101, and the second end of the second leg 401 is selectively rotatable toward or away from the floor surface.

[0038] 8 and 9, the length direction of the position restricting plate 403 is the same as the length direction of the first frame portion 101, the position restricting plate 403 is fixedly connected to the first frame portion 101, and the side of the position restricting plate 403 and the rotation plane of the second leg portion 401 are parallel to each other. In this embodiment, the rotation plane of the second leg portion 401 and the side of the position restricting plate 403 are both perpendicular to the side facing the floor surface of the first frame portion 101. A chute 4031 is provided on the side of the position restricting plate 403, and the length direction of the chute 4031 is the same as the length direction of the first frame portion 101. The chute 4031 has a leading end 4031a facing the second end of the frame 10 and a trailing end 4031b facing in the opposite direction to the leading end 4031a. At least one position restricting notch 4032 is provided on the side of the chute 4031 facing the first frame portion 101, and in the embodiment of Fig. 9, three position restricting notches 4032 are provided, namely, a first notch 4032a, a second notch 4032b, and a third notch 4032c, which are arranged in this order along the direction from the leading end 4031a toward the tail end 4031b of the chute 4031. Here, the first notch 4032a is close to the leading end 4031a of the chute 4031, and there is a predetermined distance between the leading end 4031a and the first notch 4032a.

[0039] 9, L3 in FIG. 9 is an auxiliary line in the length direction of the chute 4031, L4 is an auxiliary line in the extension direction of the third notch 4032c, and auxiliary line L5 is perpendicular to auxiliary line L3. As can be seen from the drawing, auxiliary line L4 forms an acute angle β with auxiliary line L3. This is because, when the second support structure 40 provides support to the treadmill, the biasing direction of the position limiting block 4021 relative to the position limiting notch 4032 is opposite to the second leg 401 in the length direction of the first frame 101. Therefore, since the position control notch 4032 faces the first frame portion 101 and is recessed in the direction opposite to the second leg portion 401 in the longitudinal direction of the first frame portion 101, when the second support structure 40 is in a supported state, the movement of the position control block 4021 within the position control notch 4032 is further restricted, and the position-controlled cooperation between the position control block 4021 and the position control notch 4032 becomes more stable.

[0040] 8 and 10, a first end of the support rod 402 is rotatably connected to the second leg 401, and in this embodiment, the connection point between the support rod 402 and the second leg 401 is located at the center of the second leg 401 in the longitudinal direction. A position restriction block 4021 protruding outward is provided at the second end of the support rod 402, and the position restriction block 4021 can slide along the longitudinal direction of the chute 4031 and selectively slide and engage with one of the position restriction notches 4032 therein. During the process in which the position regulating block 4021 of the support rod 402 slides within the chute 4031, the support rod 402 drives the second leg 401 to selectively unfold so as to raise the second end of the frame 10, and after the position regulating block 4021 is fitted into the position regulating notch 4032, the unfolded width of the second leg 401 is locked and the height of the second end of the frame 10 is fixed.

[0041] 8 , the second support structure 40 further includes a tension spring 405, one end of which acts on the second leg 401, and a second end of which is located on the side of the second leg 401 facing the position limiting plate 403 and acts on the first frame 101. The tension spring 405 can provide a driving force for the second leg 401 to rotate to the folded state because, when the second leg 401 is in the supporting state, the position limiting block 4021 can be restricted within the position limiting notch 4032 by the tension force. Meanwhile, when another external force is applied to the second leg 401, the position limiting block 4021 can still disengage from the position limiting notch 4032 and can be selectively changed to another position limiting notch 4032. In addition, the tension force of the tension spring 405 can also support the second leg 401 in quickly transforming from the supporting state to the retracted state, and can allow the second leg 401 to continuously maintain the retracted state. In addition to the tension spring 405, in some embodiments, a coil spring or other elastic material capable of achieving this function may be provided at the joint between the second leg 401 and the first frame 101, and the above technical effects of the tension spring 405 can be achieved instead of the tension spring 405, and are not specifically limited here.

[0042] In some embodiments, as shown in FIG. 8 , a link 406 is provided between two second support structures 40, with a first end of the link 406 connected to one side of the support rod 402 of one of the second support structures 40 that is remote from the position limiting plate 403, and a second end of the link 406 connected to one side of the position limiting plate 403 that is remote from the support rod 402 of the other second support structure 40. The link 406 allows the two second support structures 40 to be synchronized when adjusting the level, simplifying operation. Furthermore, the two second support structures 40 can be constrained relative to each other, improving the stability of the treadmill.

[0043] In some embodiments, as shown in FIG. 8, the second end of the second leg 401 is provided with a wheel 404 for easy movement on a treadmill.

[0044] 11 to 15 show different states of the second support structure 40. FIG.

[0045] The position limiting block 4021 in FIG. 11 is located at the tip 4031a of the chute 4031, and the second support structure 40 at this time is in the lowest state, which can be defined as the first level of the second support structure 40.

[0046] 12 is positioned in the first notch 4032a on the position limiting plate 403 and is engaged while limiting the position. As can be seen from the drawing, compared with the first level of the second support structure 40, the second end of the frame 10 is raised, and this state can be defined as the second level of the second support structure 40.

[0047] The position control block 4021 in Figure 13 is located in the second notch 4032b on the position control plate 403, and the position control block 4021 in Figure 14 is located in the third notch 4032c on the position control plate 403, and compared to the first level and second level of the second support structure 40, the second end of the frame 10 is further raised in height and can be defined as the third level and fourth level of the second support structure 40, respectively.

[0048] 14 is located in the chute 4031 between the second notch 4032b and the third notch 4032c on the position limiting plate 403, and this state may be understood as the second support structure 40 transforming from the fourth level to another level, or from another level other than the fourth level to the fourth level. The transformation between other levels is similar to that in the drawings, and will not be further described here.

[0049] The treadmill of the present application can adjust various inclinations through cooperation between the first support structure 30 and the second support structure 40. As shown in FIG. 16, when the first support structure 30 is in the support state and the second support structure 40 is in the first level state (the second end of the frame 10 is in the lowest position), the treadmill is in a positive inclination state. As shown in FIG. 17, when the first support structure 30 is in the support state, the second support structure 40 is in the third level state (when the position limiting block 4021 is positioned in the second notch 4032b of the position limiting plate 403, it is in the state of the second support structure 40), and the treadmill is in a negative inclination state. Furthermore, as shown in FIG. 18, when both the first support structure 30 and the second support structure 40 are in the folded state, the treadmill is in a horizontal state. Here, horizontal means that the treadmill is parallel to the floor, and does not specifically refer to a plane perpendicular to the direction of gravity.

[0050] In some embodiments, a crossbar is provided at the first end of the frame 10, and both ends of the crossbar are fixedly connected to the first frame portion 101 and the second frame portion 102, respectively. The two first support structures 30 in the above embodiments may be attached to the crossbar, and one of the first support structures 30 is as close as possible to the first frame portion 101, and the other first support structure 30 is as close as possible to the second frame portion 102, thereby maintaining a sufficient distance between the two first support structures 30 and improving the stability of the treadmill.

[0051] The floor surface in the above embodiment is simply a general term for the support surface of the treadmill, and does not refer to the floor surface alone.

[0052] The above are merely some examples of the present application, and are not intended to limit the present application. Those skilled in the art may have various modifications and variations to the present application. Any modifications, equivalent replacements, and improvements made without departing from the spirit and principles of the present application shall be included in the protection scope of the present application. [Explanation of symbols]

[0053] 10 frames 10a First end 10b Second end 101 First frame 102 Second frame 103 Horizontal frame 201 Running Belt 202 First Roller 2021 Pulley 203 Second Roller 204 Motor 205 Control circuit 30 First support structure 301 First Leg 3011 First Aspect 3012 Second Aspect 3013 The Third Aspect 3014 The Fourth Aspect 3015 First groove 3016 Second groove 3017 Shaft hole 3018 Locking groove 302 Support Base 3021 First hinge connector 3022 Second hinge connector 3023 Receiving base 40 Second Support Structure 401 Second Leg 402 Support Rod 4021 Position Control Block 403 Position regulation plate 4031 Shoot 4031a tip 4031b tail end 4032 Position control notch 4032a First notch 4032b Second notch 4032c Third notch 404 Wheels 405 Extension spring 406 Link

Claims

1. A manually adjustable lifting mechanism, a frame (10) having a first end (10a) and a second end (10b) opposite in its longitudinal direction; two first support structures (30) provided at a first end (10a) of the frame (10) and provided on both sides of the frame (10) in the longitudinal direction, the first support structures (30) having first legs (301) pivotably connected to the frame (10) at their first ends and selectively pivotable between a supporting state and a folded state; two second support structures (40) provided at a second end (10b) of the frame (10) and provided on both sides of the frame (10) in the longitudinal direction, wherein the second support structure (40) is a second leg (401) whose first end is pivotally connected to the frame (10); a position restricting plate (403) fixedly connected to the frame (10) and having a side parallel to the rotation plane of the second leg (401), the position restricting plate (403) having a chute (4031) on the side and at least one position restricting notch (4032) on at least one side in the length direction of the chute (4031); a support rod (402) whose first end is pivotally connected between the first end and the second end of the second leg (401), and whose second end is provided with a position restriction block (4021) that can slide within the chute (4031); Here, the second leg (401) can be selectively rotated toward the support surface and can drive the support rod (402) to cause the position control block (4021) to slide within the chute (4031), and the position control block (4021) can be selectively slid into the position control notch (4032) to lock the support state by the second leg (401), characterized in that this lifting mechanism.

2. The lifting mechanism of claim 1, wherein the chute (4031) has a first end away from the second leg (401) and a second end close to the second leg (401), and the position limiting notch (4032) is provided at the second end of the chute (4031).

3. The length direction of the chute (4031) is parallel to the length direction of the frame (10), and the position control notch (4032) is provided on the side of the chute (4031) facing the frame (10), and / or 3. The lifting mechanism according to claim 1, wherein the extending direction of the position restricting notch (4032) forms an acute angle with respect to the longitudinal direction of the chute (4031).

4. the second support structure (40) further includes a spring, one end of which acts on the frame (10) and the other end of which acts on the second leg (401), the spring providing a driving force for the second leg (401) to rotate to the folded state; and / or a link (406) is provided between the two second support structures (40), a first end of the link (406) is connected to the support rod (402) of one of the second support structures (40) and a second end of the link (406) is connected to the support rod (402) of the other second support structure (40), and the two second support structures (40) are kept synchronized by the link (406); and / or 2. The lifting mechanism according to claim 1, characterized in that the second end of the second leg (401) is provided with a rotatable wheel (404).

5. The frame (10) includes at least two frame portions (101, 102) arranged opposite to each other, the two frame portions (101, 102) being arranged on both sides of the frame (10) in the longitudinal direction, and the two first support structures (30) and the two second support structures (40) are both arranged on the two frame portions (101, 102), and / or Selectably adjusting at least one negative tilt state by cooperation between the first support structure (30) and the second support structure (40); and / or 2. The lifting mechanism of claim 1, wherein cooperation between the first support structure (30) and the second support structure (40) allows for selectable adjustment to a positive tilt state, a negative tilt state, or a horizontal state.

6. 2. The lifting mechanism of claim 1, wherein the first support structure (30) further includes a support base (302) fixedly connected to the frame (10), and a first end of the first leg (301) is pivotally connected to the support base (302), and the first leg (301) is selectively pivotable toward a support surface.

7. The first support structure (30) is provided on the side of the frame (10) facing the support surface, When the first leg (301) is in a supporting state, a first side surface of the first leg (301) facing the frame (10) abuts against the frame (10); 7. The lifting mechanism according to claim 6, wherein when the first leg (301) is in the folded state, a second side of the first leg (301) facing the frame (10) abuts against the frame (10).

8. The support base (302) includes a bottom (3023) and a hinge connector, the bottom (3023) is fixedly connected to the frame (10), the hinge connector is fixedly connected to the bottom (3023), and the first leg (301) is pivotally connected to the hinge connector; a first groove (3015) is provided on the first side surface near the second side surface, and when the first leg portion (301) is in a supporting state, the first groove (3015) can accommodate at least a part of the receiving bottom (3023); The lifting mechanism of claim 7, characterized in that a second groove (3016) is provided on the second side closer to the first side, and when the first leg portion (301) is in a folded state, the second groove (3016) can accommodate at least a portion of the receiving bottom (3023).

9. The lifting mechanism according to claim 1, wherein a locking groove (3018) is provided on a side surface of the first leg (301).

10. A treadmill, A treadmill comprising a running belt (201) and the lifting mechanism according to any one of claims 1 to 9, wherein a first roller (202) is provided at a first end of the frame (10) and a second roller (203) is provided at a second end of the frame (10), and the running belt (201) surrounds the first roller (202) and the second roller (203).

Images