Treadmill with adjustable inclination
By designing an adjustable incline treadmill, the treadmill can be adjusted uphill and downhill using the synergistic effect of the drive components and universal joints. This solves the problem that existing treadmills only support uphill training, provides a full range of exercise modes, and improves training effectiveness and comfort.
Patent Information
- Application Number
- CN202520173423.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-26
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-01-26
AI Technical Summary
Most existing treadmills only offer uphill training functions and lack downhill training modes, which cannot meet all-round exercise needs. In particular, downhill training is crucial for training leg muscles and body balance.
Design an adjustable incline treadmill. By controlling the extension and retraction of the sleeve through a drive component, and combining the synergistic effect of the universal joint and the adjusting component, the treadmill can be adjusted to change its incline and height, and the height difference between the front and rear sides can be adjusted to meet the needs of incline training.
It enables flexible switching between uphill and downhill modes on the treadmill, meeting different training needs and improving training effectiveness and comfort, especially enhancing the training effect of leg muscles and body balance during downhill training.
Smart Images
Figure CN223874339U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of body -building equipment, especially a running machine with adjustable inclination, which can simulate uphill and downhill running or walking for a user to perform aerobic training. BACKGROUND
[0002] With the acceleration of modern life pace, people's daily exercise time is increasingly limited, so choosing a simple, effective and easy-to-execute exercise method becomes the first choice for many people. Running, as an exercise that can improve heart and lung function without the need for a professional venue, is widely welcomed. When the external weather conditions are not good or the time does not allow outdoor exercise, an indoor treadmill becomes a necessary fitness equipment for many community facilities and fitness clubs.
[0003] Most of the treadmills on the market currently have the function of adjusting the slope, mainly by lifting the front end of the treadmill to simulate uphill running training, which is mainly achieved through a lifting mechanism. However, existing treadmills usually only provide uphill mode and do not provide sufficient downhill training function. For users who need to perform comprehensive training, there is a lack of sufficient downhill training function. For users who need to be all-around, only uphill training cannot meet the diverse exercise needs, especially downhill training is crucial for leg muscle, body balance and knee joint exercise.
[0004] Although the existing technology has solved the demand for uphill training to some extent, there is still room for improvement in the adjustment effect of the slope (inclination angle) in simulating downhill training mode. Therefore, how to design a treadmill that has both uphill and downhill training has become a hot topic in the development of treadmill technology.
[0005] To solve this problem, many treadmills have begun to study how to achieve a design with adjustable inclination to more flexibly simulate uphill and downhill running modes to meet the exercise needs of different users and achieve more comprehensive training effects. SUMMARY
[0006] To solve the above problems, the main purpose of the utility model is to provide a running machine with adjustable inclination, which can simulate uphill and downhill running modes flexibly for users to meet the exercise needs of different users for aerobic training.
[0007] To achieve the above object, the utility model provides a kind of inclination of adjustable treadmill, it is characterized by including: a running platform, it has a front side and a rear side, the front side both sides each is equipped with a first pivot part, the rear side both sides each is equipped with a second pivot part, for a user to run or walk;A tilt frame body includes a first crossbar and left, right two first support side frames, and the both ends of the first crossbar are connected with the first support side frame respectively, each first support side frame has a free end and a rotating end, the free end is configured to support on a ground, and adapt to the inclination change when the running platform is inclined, the rotating end is pivoted to the first pivot part;A support frame body includes a second crossbar and left, right two second support side frames, and the both ends of the second crossbar are connected with the second support side frame respectively, each second support side frame has two ends, one end is equipped with a fixed pad abutting against the ground, the other end is pivoted to the second pivot part, wherein, a universal shaft is arranged between the fixed pad and the second pivot part, can allow the displacement change of the second pivot part;A drive assembly includes a sleeve and a connecting rod, the sleeve is arranged between the front side and the tilt frame body, and can be telescopic, and one end of the connecting rod is pivoted to the first crossbar of the tilt frame body, and the other end is arranged on the second crossbar in a displaceable manner;Wherein, when the sleeve is telescopic, the running platform can be displaced between a first position, a second position and a third position, and the inclination of the running platform is changed;In the first position, the extension of the line between the front side and the rear side is horizontal, and the height of the front side and the rear side is substantially equal;In the second position, the sleeve extends along its axial direction, and the tilt frame body is lifted upward, so that the height of the front side is greater than the rear side;In the third position, the sleeve is retracted along its axial direction, and the tilt frame body is inclined downward, so that the height of the front side is lower than the rear side.
[0008] In the above technical scheme of the present application, when entering the second position, the sleeve extends along its axial direction, and drives the running platform to swing in clockwise direction around the universal shaft, so that the position of the second pivot part is offset clockwise around the universal shaft, and then the front side is raised and the rear side is lowered;Different from this, when entering the third position, the sleeve is retracted along its axial direction, and drives the running platform to swing in counterclockwise direction around the universal shaft, at this time, the second pivot part is offset clockwise around the universal shaft through the fixed pad abutting against the ground, so that the front side is lowered and the rear side is raised.
[0009] Further comprising a regulating member having a first end and a second end, the first end is pivoted to the connecting rod, and the second end is pivoted to the second cross rod, when the treadmill is adjusted from the first position to the second position, the regulating member is configured to provide a movement space for the connecting rod, and the second end is adapted to move relatively as the axis to accommodate the displacement of the connecting rod.
[0010] When the treadmill is adjusted from the first position to the second position, the inclination of the treadmill can be up to 15 degrees at most.
[0011] When the treadmill is adjusted from the first position to the third position, the inclination of the treadmill can be down to 5 degrees at most.
[0012] Each of the two sides of the treadmill is provided with a buffer part, and one side of each second support side frame is provided with a limiting part, when in the first position or the second position, the buffer part and the limiting part are in contact; when in the third position, the buffer part and the limiting part are no longer in contact and are separated.
[0013] The tilting frame further comprises a support rod, the support rod is fixedly connected to the free end of the two first support side frames, and two pivot plates are fixed between the first cross rod and the support rod for pivoting one end of the sleeve.
[0014] The free end of each first support side frame is provided with a roller, the roller is configured to be supported on the ground and displaced in the front-back direction relative to the ground when the inclination of the treadmill changes to adapt to the inclination change.
[0015] Further comprising a fixed seat, the fixed seat is supported on the ground, and a third pivot part is extended on each side, the free end of each first support side frame is pivoted to the third pivot part, when the inclination of the treadmill changes, each first support side frame swings and displaces around the third pivot part to adapt to the inclination change.
[0016] The drive assembly further comprises a motor and a screw rod, the inside of the sleeve is provided with an internal thread matched with the screw rod, and the motor is arranged on one side of the sleeve for driving the sleeve to axially extend or retract along the screw rod to adjust the inclination of the treadmill.
[0017] By adopting the above technical scheme, when the user operates the drive assembly to control the sleeve to extend or retract in the axial direction, the tilting frame body is lifted upward or inclined downward, and then the height of the front side of the treadmill relative to the rear side changes, so that the inclination of the treadmill is adjusted.
[0018] The core of the utility model lies in the process that the running platform is lifted upward and is inclined downward, two different mechanisms are adopted to complete:
[0019] In the second position, the adjusting part is in the state of not being forced, mainly through the characteristics of the universal shaft, when the sleeve extends outward along the axis, the running platform is swung clockwise around the universal shaft, the position of the second pivot joint is offset clockwise around the universal shaft, the front side part is lifted and the rear side part is lowered.
[0020] In the third position, the adjusting part is in the state of being forced, and is completed through two actions. The first action uses the characteristics of the universal shaft, when the sleeve is retracted inward, the running platform is swung counterclockwise around the universal shaft; the second action pulls the second horizontal rod through the adjusting part, and the fixed pad is combined to abut against the ground, the position of the second pivot joint is offset clockwise around the universal shaft, the two actions are combined, the front side part is lowered and the rear side part is further lifted, so as to complete the tilting action of the running platform.
[0021] Through the mechanism, the running machine can efficiently complete displacement between the second position and the third position, so as to meet more diversified movement requirements. BRIEF DESCRIPTION OF DRAWINGS
[0022] Figure 1 It is the three-dimensional schematic view of the running machine in the preferred embodiment of the utility model;
[0023] Figure 2 It is the three-dimensional schematic view of the running machine from another perspective in the preferred embodiment of the utility model;
[0024] Figure 3 It is the exploded schematic view of the preferred embodiment of the utility model;
[0025] Figure 4 It is the side view of the preferred embodiment of the utility model operated in the first position;
[0026] Figure 5 It is the side view of the preferred embodiment of the utility model operated in the second position;
[0027] Figure 6 It is the side view of the preferred embodiment of the utility model operated in the third position;
[0028] Figure 7 It is the exploded schematic view of another preferred embodiment of the utility model;
[0029] Figure 8 It is the side view of another preferred embodiment of the utility model operated in the second position;
[0030] Figure 9 It is the side view of another preferred embodiment of the utility model operated in the third position. DETAILED DESCRIPTION
[0031] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.
[0032] Referring to FIG. 1, Figures 1 to 3 as shown in the drawings, wherein Figure 1 FIG. 1 is a perspective view of a treadmill according to a preferred embodiment of the present application; Figure 2 FIG. 2 is a perspective view of the treadmill of FIG. 1 from another viewing angle; Figure 3 FIG. 3 is an exploded view of the treadmill of FIG. 1. The above views are all in a horizontal state of the treadmill, showing the structural details thereof. The adjustable-inclination treadmill of the present application has two side handrails and an instrument panel as auxiliary components, which mainly serve to provide comfort and operational convenience for the user, but the structure and function thereof are not the main innovative parts of the present application, and thus are not shown in the views. The adjustable-inclination treadmill of the present application comprises:
[0033] Referring to FIG. 1, Figure 1 a treadmill 10 having a front side 11 and a rear side 12, the front side 11 having a first pivot joint 13 on each side thereof, the rear side 12 having a second pivot joint 14 and a buffer 15 on each side thereof, and a running belt 16 being provided between the front side 11 and the rear side 12 and being capable of being wound and unwound in a loop, for a user to run or walk.
[0034] Referring to FIG. 1, Figure 2As shown, a tilting frame body 20 includes a first crossbar 21, left and right first support side frames 22, a support bar 23, and two pivot plates 24. The two ends of the first crossbar 21 are respectively connected to the first support side frames 22. Each first support side frame 22 has a free end 22a and a rotating end 22b. The free end 22a is configured to be supported on the ground and is adapted to the inclination change of the running platform 10 when the running platform 10 is tilted. The rotating end 22b is pivoted to the first pivot portion 13. The support bar 23 is fixedly connected to the free end 22a of the two first support side frames 22. Two pivot plates 24 are fixed between the first crossbar 21 and the support bar 23 to enhance the structural stability and load-bearing capacity of the tilting frame body 20 as a whole. In this embodiment, the two pivot plates 24 extend below the first crossbar 21 to form a first adapter portion 24a, which is equivalent to an extension of the first crossbar 21. The free end 22a of each first support side frame 22 is provided with a roller 25, which is configured to be supported on the ground. When the running platform 10 is tilted, the roller 25 can be displaced along the front-rear direction relative to the ground, not only adapting to the inclination change of the running platform 10, but also effectively dispersing the stress of the tilting frame body 10 on the ground, thereby improving the stability.
[0035] As shown in Figure 2 and Figure 3 As shown, a tilting frame body 20 includes a first crossbar 21, left and right first support side frames 22, a support bar 23, and two pivot plates 24. The two ends of the first crossbar 21 are respectively connected to the first support side frames 22. Each first support side frame 22 has a free end 22a and a rotating end 22b. The free end 22a is configured to be supported on the ground and is adapted to the inclination change of the running platform 10 when the running platform 10 is tilted. The rotating end 22b is pivoted to the first pivot portion 13. The support bar 23 is fixedly connected to the free end 22a of the two first support side frames 22. Two pivot plates 24 are fixed between the first crossbar 21 and the support bar 23 to enhance the structural stability and load-bearing capacity of the tilting frame body 20 as a whole. In this embodiment, the two pivot plates 24 extend below the first crossbar 21 to form a first adapter portion 24a, which is equivalent to an extension of the first crossbar 21. The free end 22a of each first support side frame 22 is provided with a roller 25, which is configured to be supported on the ground. When the running platform 10 is tilted, the roller 25 can be displaced along the front-rear direction relative to the ground, not only adapting to the inclination change of the running platform 10, but also effectively dispersing the stress of the tilting frame body 10 on the ground, thereby improving the stability.
[0036] As shown in Figure 3As shown, a drive assembly 40 is provided, which includes a sleeve 41, a connecting rod 42, a motor 43 and a screw rod 44. The sleeve 41 is arranged between the front side 11 and the inclined frame body 20. More specifically, one end of the sleeve 41 is connected to the front side 11, and the other end is pivotally connected between the two pivot plates 24 of the inclined frame body 20. The sleeve 41 can move axially to control the swinging of the inclined frame body 20. One end of the connecting rod 42 is pivotally connected to the first cross rod 21, and the other end is movably arranged on the second connecting portion 31a of the second cross rod 31. The sleeve 41 is internally provided with an internal thread matched with the screw rod 44. The motor 43 is arranged on one side of the sleeve 41 to drive the sleeve 41 to axially extend or retract along the screw rod 44, so as to adjust the inclination θ of the running platform 10.
[0037] When the sleeve 41 moves axially, the running platform 10 can move between a first position, a second position and a third position, and the inclination θ of the running platform 10 is changed. In the first position, the line extending between the front side 11 and the rear side 12 is horizontal, and the height of the front side 11 is substantially equal to that of the rear side 12. In the second position, the sleeve 41 extends axially outward, and the inclined frame body 20 is lifted upward, so that the height of the front side 11 is greater than that of the rear side 12. In the third position, the sleeve 41 is retracted axially inward, and the inclined frame body 20 is inclined downward, so that the height of the front side 11 is lower than that of the rear side 12.
[0038] In the embodiment, an adjusting member 50 is further provided, which has a first end 51 and a second end 52. The first end 51 is pivotally connected to the connecting rod 42, and the second end 52 is pivotally connected to the second connecting portion 31a on one side of the second cross rod 31. When the running platform 10 is adjusted from the first position to the second position, the adjusting member 50 is configured to provide a movement space for the connecting rod 42, and the second end 52 is adapted to move as the relative axis to accommodate the displacement of the connecting rod 42, so as to ensure the smoothness of the movement and improve the stability of the structure.
[0039] The above is a summary of the basic structure of a preferred embodiment of the present application and the assembly process of the elements, and the functional principle achieved by the present application is described as follows:
[0040] When the user stands on the running platform 10 and starts the treadmill, the system defaults to the initial mode (corresponding to the first position). In this mode, the running platform 10 remains stable, suitable for ordinary walking or running training. In addition, according to the movement state or training needs of the user, it can be selected to switch to a tilt mode suitable for walking training, such as an uphill mode (corresponding to the process of adjusting from the first position to the second position) or a downhill mode (corresponding to the process of adjusting from the first position to the third position). The user can also change the slope of the running platform 10 by adjusting the inclination θ of the running platform 10 relative to the horizontal line according to the evaluation of the personal fitness plan to meet the movement needs of different stages, so that the treadmill device quickly adapts to and meets the individualized settings of the user.
[0041] Please refer to Figure 4 , which is a side view of the preferred embodiment of the present application operating in the first position. The mechanism principle for adjusting the inclination angle is explained. In the first position, the running platform maintains the horizontal state of the extension section of the line between the front side 11 and the rear side 12. At this time, the buffer part 15 of the running platform 10 is in contact with the limiting part 35 (please refer to Figure 2 ), providing basic support and buffering functions. When entering the second position, the buffer part 15 and the limiting part 35 will continue to form contact and play their supporting and buffering roles to disperse the pressure and ensure the stability of the structure.
[0042] Please refer to Figure 5 , which is a side view of the preferred embodiment of the present application operating in the second position. When entering the second position from the first position, as the sleeve 41 gradually extends outward along its axis, the front side 11 of the running platform 10 is gradually pushed away from the two pivot plates 24. At this time, in order to adapt to this structural change, the tilt frame body 20 rotates counterclockwise around the first pivot part 13. With this direction of swing, the front side 11 of the running platform 10 is lifted, and the rollers 25 located at the free ends 22a of each first support side frame 22, because they are in free contact with the ground, naturally roll and displace backward with the rotation of the tilt frame body 20, to adapt to the change of the inclination angle. The displacement of the rollers 25 not only continues the supporting role of the tilt frame body 20, but also further improves the stability of the running platform 10 during the inclination adjustment process by dispersing the pressure load of the running platform 10 on the ground.
[0043] In the tilting process, the design of the universal shaft 34 plays an important role. The support frame 30 is connected to the fixed pad 33 through the universal shaft 30, and provides the support and the pivot function of free rotation. When the treadmill 10 is tilted, the support frame 30 can adapt to the change of the tilting angle, drive the treadmill 10 to swing in the clockwise direction around the universal shaft 34, and make the second pivot part 14 on the rear side 12 offset in the clockwise direction around the universal shaft 34. The multi-angle adaptive design effectively avoids the structural deformation caused by stress concentration in the tilting process, and improves the structural adaptability of the treadmill 10 from the first position to the second position, so as to ensure the cooperative operation of the components.
[0044] Through the design, when the user starts the uphill mode, the front side 11 can be raised and the rear side 12 can be lowered from the first position to the second position, and the inclination θ of the treadmill 10 can be changed upward by up to 15 degrees. The inclination angle is fine-tuned by adjusting the axial extension length of the sleeve 41 to meet different training needs. Although the inclination θ of the treadmill 10 should be calculated based on the extension of the line between the front side 11 and the rear side 12 in the initial state, in order to improve the intuitiveness of the illustration, the horizontal line drawn with the one end of the tilted treadmill 10 as the center is selected as the reference point, which can more clearly show the change, and the two line segments are in a horizontal relationship, which does not affect the calculation result of the final inclination θ.
[0045] When the treadmill 10 is adjusted from the first position to the second position, the connecting rod 42 connected between the tilting frame 20 and the support frame 30 slightly moves backward under the action of force. In order to accommodate this movement, the adjusting part 50 moves counterclockwise with the second end 52 as the relative center, thereby providing sufficient space for the connecting rod 42 to move, avoiding the potential risk of extrusion deformation between the connecting rod 42 and the second cross bar 31. In addition, between 0 degrees and 15 degrees, the adjusting part 50 is not subjected to the action of force and is in a stress-free state, thereby allowing the treadmill 10 to move smoothly and ensuring uniform stress distribution during movement.
[0046] Please refer to Figure 6 The side view of the preferred embodiment of the utility model operated in the third position is shown. The mechanism principle of adjusting the inclination θ into the downhill mode is explained. When the treadmill 10 is adjusted from the first position to the third position, the rear side 12 is raised in the tilted state, and the logic is similar to that from the first position to the second position, but the operation of the specific mechanism is different due to the limitation of the ground. When entering the third position, the treadmill 10 will simultaneously undergo two kinds of tilting changes, and the buffer part 15 and the limiting part 35 are no longer in contact and are separated during the process (not shown in the figure).
[0047] The first inclination change utilizes the characteristics of the universal shaft. When the sleeve 41 is gradually retracted along its axial direction, the front side 11 of the treadmill 10 is gradually pulled closer to the two pivot plates 24 and slowly lowered towards the ground. During the adjustment from the first position to the third position, the rollers 25 hardly move because the space for the downward displacement of the front side 11 is relatively small. At this time, the design of the universal shaft 34 drives the treadmill 10 to swing counterclockwise around the universal shaft 34, and drives the front side 11 and the first pivot portion 13 thereon to move downward towards the ground. This process mainly provides stable support and adjusts the inclination θ, so that the front side 11 is lowered and the rear side 12 is gradually raised, completing the transition of the overall inclination.
[0048] The second inclination change is realized by the adjusting member 50. When the front side 11 is lowered, the connecting rod 42 connected between the inclined frame 20 and the support frame 30 slightly moves forward under the action of force, and pulls the second cross bar 31 of the support frame 30 through the adjusting member 50. At this time, the fitting relationship between the universal shaft 34 and the fixed pad 33 plays a role, which makes the fixed pad 33 originally tend to tilt counterclockwise around the second pivot portion 14. However, because the fixed pad 33 abuts against the ground, its stability mainly depends on the compression force provided by the weight of the treadmill, and its downward tilting tendency is limited, so the fixed pad 33 cannot further press into the ground. This mechanical limitation forms a stable reaction force balance between the fixed pad 33 and the ground, avoiding further downward movement; by using this stable contact state, the universal shaft 34 can reversely guide the position of the second pivot portion 14 to shift clockwise around the universal shaft 34, so as to adapt to the change of the inclination angle. Through this structural design, the lifting capacity of the rear side 12 can be further improved, and it is ensured that the treadmill 10 can smoothly transition and maintain a stable movement state during the adjustment from the first position to the third position.
[0049] Through this design, when the user starts the downhill mode and adjusts from the first position to the third position, the two inclination changes can be combined to lower the front side 11 and raise the rear side 12, and the inclination θ of the treadmill 10 can be changed downward by up to 5 degrees. The axial extension length of the adjusting sleeve 41 is adjusted to fine-tune the inclination θ to meet different training needs. To remain consistent with the uphill mode, the horizontal reference line in the figure is also drawn with the end of the inclined treadmill 10 as the reference point, so that the changes during the downhill process are more clear and intuitive, and do not affect the calculation result of the final inclination θ.
[0050] During the process of adjusting from the first position to the third position, the rear side 12 is gradually lifted by pulling the connecting rod 42 and connecting the adjusting member 50, so as to ensure the smooth transition of the running platform 10 and adapt to the inclination change of entering the third position. At this time, the function of the adjusting member 50 is no longer to maintain the activity space, but to gradually lift the rear side 12 according to the requirement of adjusting from the first position to the third position, so as to further enhance the overall stability.
[0051] Specifically, during the process of adjusting from the first position to the second position, the design of the adjusting member 50 aims to provide sufficient activity space without bearing obvious pulling force; however, during the process of adjusting from the first position to the third position, the adjusting member 50 begins to bear a pulling force F from the connecting rod 42 and transmits the action to the support frame body 20, thereby gradually lifting the height of the rear side 12. This process effectively avoids structural deformation caused by uneven pressure or stress concentration, and ensures the stability of the running platform 10, meeting the movement requirements of uphill and downhill modes.
[0052] Please refer to Figures 7 to 9 , wherein Figure 7 is an exploded schematic view of another preferred embodiment of the utility model; Figure 8 is a side view of another preferred embodiment of the utility model operating in the second position; Figure 9 is a side view of another preferred embodiment of the utility model operating in the third position mode. In this embodiment, another optimized design of the roller 25 compared to the above-mentioned preferred embodiment is proposed for how to adapt the free end 22a of each first support side frame 22 to the inclination change of the running platform 10.
[0053] Please refer to Figure 7 , compared to the above-mentioned preferred embodiment, this embodiment adds a fixed seat 60 on the basis of the original structure. The fixed seat 60 is fixed to the ground as a support purpose, and a third pivot part 61 is provided on the two sides thereof and extends upward, and the free end 22a of each first support side frame 22 can be directly pivoted to the third pivot part 61. In this embodiment, the two pivot plates 24 extend from one side of the first horizontal rod 21 to the other side of the first horizontal rod 21 along the upper side, and form a first adapter part 24a, which is equivalent to the extension of the first horizontal rod 21, and the main design purpose is to avoid the fixed seat 60 located below. When the running platform 10 changes in inclination, each first support side frame 22 will swing and displace around the third pivot part 61, so as to adapt to the inclination change and realize the function of replacing the roller 25. In addition, each first support side frame 22 adopts an arc-shaped design with the opening upward and the lower side slightly thick, and this structure can strengthen the bearing capacity of each first support side frame 22 in the second position, effectively reduce the risk of structural deformation, and further ensure the stability of the running platform 10 during use.
[0054] Please refer toFigure 8 and Figure 9 As shown in FIGS. 1-3, the design of the fixed seat 60 provides another way of support and adaptation compared with the above-mentioned embodiment with the rollers 25, and the swing displacement of each first support side frame 22 replaces the forward and backward displacement of the rollers 25 to adapt to the inclination change. This design simplifies the structure and avoids the problems of moving resistance and ground wear that may be involved in the rollers 25. Whether entering the second position or the third position, this design can provide reliable support and inclination adaptation ability through the swing of each first support side frame 22, ensuring that the front side 11 can adapt to the height change, thereby achieving smooth transition.
[0055] In summary, the present application provides a running machine with adjustable inclination, which mainly solves the problem that the existing running machine only supports uphill mode and lacks downhill training function. Through the innovative design of the universal wheel 34 and the fixed seat 33, the inclination change of the running machine between the first position, the second position and the third position is flexibly adapted, and the diversified training needs of the user are met.
[0056] In particular, the introduction of the adjusting member 50 can optimize the slope adjustment capability from the first position to the third position, ensuring smooth transition of the running machine at different inclinations θ. Especially in the process of entering the third position, the adjusting member 50 bears the tension F from the connecting rod 42, gradually raises the height of the rear side 12, and effectively improves the lifting capability of the rear side 12 through cooperation with the universal shaft 34, thereby ensuring the overall stability and smoothness of the running machine. The design of the universal shaft 34 enables the running machine to realize two inclination changes at the same time, which can not only drive the downward movement of the front side 11, but also further strengthen the adjustment of the slope through the adjusting member 50, ensuring that the second pivot 13 is offset in the clockwise direction around the universal shaft 34, and accurately adapts to different downhill angles.
[0057] This design not only optimizes the functionality of the running machine, but also provides more comprehensive and diverse training modes for the user, especially in downhill training, which improves the training effect and comfort.
Claims
1. An adjustable incline treadmill characterized by Includes: A treadmill has a front side and a rear side, with a first pivot on each side of the front side and a second pivot on each side of the rear side, for a user to run or walk. An inclined frame includes a first crossbar and two first support side frames, left and right. The two ends of the first crossbar are respectively connected to the first support side frames. Each first support side frame has a free end and a rotating end. The free end is configured to support a ground and adapt to the tilt change when the running platform is tilted. The rotating end is pivotally connected to the first pivot part. A support frame includes a second crossbar and two second support side frames, left and right. The two ends of the second crossbar are respectively connected to the second support side frames. Each second support side frame has two ends, one end of which is provided with a fixing pad that abuts against the ground, and the other end is pivotally connected to a second pivot part. A universal joint is provided between the fixing pad and the second pivot part, which allows the second pivot part to undergo displacement. A drive assembly includes a sleeve and a connecting rod. The sleeve is disposed between the front side and the inclined frame and is capable of telescopic movement. One end of the connecting rod is pivotally connected to the first crossbar of the inclined frame, and the other end is disposed in a displaceable manner on the second crossbar. When the sleeve extends and retracts, the treadmill can shift between a first position, a second position, and a third position, and change the inclination of the treadmill. In the first position, the extension of the line connecting the front and rear sides is horizontal, and the heights of the front and rear sides are approximately equal. In the second position, the sleeve extends outward along its axial direction, and the tilting frame is raised upward, making the height of the front side greater than that of the rear side. In the third position, the sleeve retracts inward along its axial direction, and the tilting frame is tilted downward, making the height of the front side lower than that of the rear side.
2. The adjustable incline treadmill of claim 1, wherein: When entering the second position, the sleeve extends outward along its axis and causes the treadmill to swing clockwise around the universal joint, causing the position of the second pivot to shift clockwise around the universal joint, thereby causing the front part to rise and the rear part to fall. In contrast, when entering the third position, the sleeve retracts inward along its axis and causes the treadmill to swing counterclockwise around the universal joint. At this time, the fixed pad rests against the ground, causing the position of the second pivot to shift clockwise around the universal joint, resulting in the front part falling and the rear part rising.
3. The adjustable incline treadmill of claim 1, wherein: It also includes an adjusting member having a first end and a second end, the first end being pivotally connected to the connecting rod and the second end being pivotally connected to the second crossbar. When the treadmill is adjusted from the first position to the second position, the adjusting member is configured to provide the connecting rod with a space for movement and to adaptively move with the second end as the relative axis to accommodate the displacement of the connecting rod.
4. The adjustable incline treadmill of claim 1, wherein: When the treadmill is adjusted from the first position to the second position, the inclination of the treadmill can be increased by up to 15 degrees upward.
5. The adjustable incline treadmill of claim 1, wherein: From the first position to the third position, the inclination of the treadmill can be adjusted downward by up to 5 degrees.
6. The adjustable incline treadmill of claim 1, wherein: Each of the two sides of the treadmill is provided with a buffer portion, and one side of each of the second support side frames is provided with a limiting portion. When in the first position or the second position, the buffer portion and the limiting portion are in contact. When in the third position, the buffer portion and the limiting portion are no longer in contact and are separated.
7. The adjustable incline treadmill of claim 1, wherein: The tilting frame body further comprises a support rod fixedly connected to the free end of the two first support side frames, and two pivot plates are fixed between the first cross bar and the support rod for pivoting one end of the sleeve.
8. The adjustable incline treadmill of claim 1, wherein: The free end of each first support side frame is provided with a roller configured to be supported on the ground and to be displaced in the front-back direction relative to the ground when the inclination of the treadmill changes to adapt to the change in inclination.
9. The adjustable incline treadmill of claim 1, wherein: Further comprising a fixed seat supported on the ground, two third pivot portions are respectively extended on the two sides of the fixed seat, and the free end of each first support side frame is pivoted to the third pivot portion. When the inclination of the treadmill changes, each first support side frame swings and displaces about the third pivot portion to adapt to the change in inclination.
10. The adjustable incline treadmill of claim 1, wherein: The driving assembly further comprises a motor and a screw rod, the inside of the sleeve is provided with an internal thread matched with the screw rod, and the motor is arranged on one side of the sleeve for driving the sleeve to axially extend and retract along the screw rod to adjust the inclination of the treadmill.