Treadmill gradient adjusting mechanism and treadmill
By switching the support surface through the eccentric rotation of the eccentric component, the problem of the treadmill's inability to achieve negative angle adjustment is solved, enabling the treadmill to flexibly switch between positive and negative angles, thus enhancing the diversity and stability of exercise modes.
Patent Information
- Application Number
- CN202520292826.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2025-12-23
- Estimated Expiration
- 2035-02-24
AI Technical Summary
Existing treadmills can only adjust the exercise surface within a positive angle range, and cannot achieve a negative angle state, thus lacking diverse exercise modes.
The design employs an eccentric component, which switches between different support surfaces by rotating the eccentric component, thereby enabling the switching of the positive and negative slope of the running platform. The distances between the first and second support surfaces of the eccentric component and the rotation axis are different, and the limiting structure ensures stable switching.
It enables flexible switching between positive and negative incline angles on the treadmill, enhancing the diversity and stability of exercise modes.
Smart Images
Figure CN223696692U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of treadmill technology, and in particular relates to a treadmill incline adjustment mechanism and a treadmill. Background Technology
[0002] Treadmills are common fitness equipment in homes, typically consisting of a base frame, running platform, handrails, and control panel. The running platform is fixed parallel to the base frame, forming a workout surface for walking or running. To simulate different workout scenarios, some treadmills are also equipped with a lifting mechanism that allows adjustment of the angle of the base frame relative to the ground, thus changing the incline of the running platform.
[0003] In existing technology, most treadmills have their lifting mechanism designed in the front half, changing the treadmill's operating state by adjusting the height of the front of the main frame. Since the rear of the treadmill rests directly on the ground, it's impossible to achieve a negative angle (lower than the rear) regardless of how the front is adjusted. Therefore, the treadmill's exercise surface can only be adjusted within a positive angle range. While this can simulate an incline scenario, its functionality is relatively limited, lacking more diverse exercise modes. Utility Model Content
[0004] To address the shortcomings of existing technologies, an incline adjustment mechanism is provided that can switch between positive and negative incline angles on a treadmill.
[0005] This utility model is achieved using the following technical solution: a treadmill incline adjustment mechanism, comprising:
[0006] The main frame, which is used to fix it to the underside of the rear end of the treadmill; and
[0007] An eccentric component is rotatably fixed on the main frame and supports the running platform. The rotation axis of the eccentric component on the main frame is offset from its geometric center. The eccentric component includes at least a first support surface and a second support surface for contacting the ground. The first support surface and the second support surface are switched by eccentric rotation of the eccentric component. The distance between the first support surface and the rotation axis is smaller than the distance between the second support surface and the rotation axis.
[0008] When the first support surface is on the ground, the running track has a positive slope; when the second support surface is on the ground, the running track has a negative slope.
[0009] In use, if the user needs to adjust the treadmill to a positive angle range, the eccentric member can be rotated during debugging of the treadmill, so that the first support surface of the eccentric member is supported on the ground, and the rear end of the treadmill is lower than the front end. If the user needs the treadmill to have a negative angle slope, i.e. the initial angle of the treadmill is negative, the eccentric member can be rotated during debugging of the treadmill, so that the second support surface of the eccentric member is supported on the ground, and the rear end of the treadmill is higher than the front end.
[0010] The shape of the eccentric member can be triangular, square, rectangular, circular, etc.
[0011] The present scheme switches different support surfaces to support the treadmill through eccentric rotation between the eccentric member and the main frame, and the distances of different support surfaces from the rotation axis are different, so that different support surfaces have different height differences when supporting the treadmill, thereby realizing switching of positive angle and negative angle slopes of the treadmill.
[0012] Preferably, the eccentric member is a regular triangle as a whole, and the two circumferential sides of the regular triangular eccentric member constitute the first support surface and the second support surface.
[0013] The eccentric member is a regular triangle, so the circumferential side of the eccentric member has only three sides, which is more convenient for switching back and forth, and the structure of the triangle is also relatively stable when supporting the treadmill, and is not easy to rotate.
[0014] Preferably, the end of the eccentric member is rotatably fixed with a caster.
[0015] The caster rotatably fixed at the end of the regular triangular eccentric member can facilitate rotation of the eccentric member, facilitate switching of the user, and also reduce wear of the eccentric member when in contact with the ground.
[0016] Preferably, the first support surface and the second support surface are located on two adjacent sides of the eccentric member, and a limiting structure is arranged between the main frame and the eccentric member, the limiting structure being two first protrusions arranged on the side wall of the main frame and a second protrusion arranged on the eccentric member, the two first protrusions being located on the positive and negative rotation paths of the second protrusion respectively, and when the first support surface or the second support surface is rotated to face the ground, one of the first protrusions abuts against the second protrusion to limit continuous rotation of the eccentric member.
[0017] Since the first and second support surfaces are located on adjacent sides of the eccentric component, when the first and second support surfaces switch back and forth, the eccentric component actually rotates in the forward or reverse direction. At this time, the rotation path is shorter, and the switching between the first and second support surfaces can be achieved more quickly. Therefore, this solution sets two first protrusions and two second protrusions to cooperate, so that when the first or second support surface rotates to face the ground, the eccentric component can no longer rotate, which plays a role in rotation limit, thereby making it convenient for users to adjust the angle of the eccentric component.
[0018] Preferably, the main frame includes two fixed plates spaced apart along the left and right direction of the running platform, and a rotating shaft is provided between the two fixed plates. The rotating shaft passes through the eccentric member to realize the rotational fixation of the eccentric member and the main frame. A spacer is provided between the eccentric member and the rotating shaft, and the two ends of the spacer contact the eccentric member and the fixed plate respectively.
[0019] By setting spacers, the eccentric component is prevented from swaying left and right, thus ensuring its stability.
[0020] Preferably, the fixing plate is welded to the running platform.
[0021] Welding provides a more robust weld.
[0022] Preferably, the eccentric component includes two triangular pieces spaced apart along the left-right direction of the running platform. The triangular pieces are fixed together by screws and nuts, and the screws pass through the caster to achieve rotational fixation between the caster and the eccentric component.
[0023] Two triangular pieces can make it lighter.
[0024] Preferably, the main frame is two in number and is spaced apart on both sides of the running platform along the left-right direction.
[0025] The two main frames can better support the rear of the running platform.
[0026] A treadmill with the above-mentioned treadmill incline adjustment mechanism includes a running platform and handrails. An electric lifting mechanism is provided on the lower front side of the running platform, and the treadmill incline adjustment mechanism is provided on the lower rear side of the running platform.
[0027] Among them, the electric lifting mechanism is a mechanism that can adjust the positive angle incline of any existing treadmill.
[0028] Compared with the prior art, this utility model has the advantage of allowing users to switch between positive and negative incline of the treadmill. Attached Figure Description
[0029] Figure 1This is a schematic diagram of the structure of the treadmill platform of this utility model when it is at a positive incline.
[0030] Figure 2 A schematic diagram of the treadmill running platform when it is in a negative incline state;
[0031] Figure 3 This is a schematic diagram of the axonometric structure of a treadmill.
[0032] Figure 4 This is a schematic diagram of the structure of the first support surface when it is in support.
[0033] Figure 5 This is a schematic diagram of the structure of the second support surface when it is in support.
[0034] Figure 6 A structural schematic diagram of the main frame and eccentric components;
[0035] Figure 7 A schematic diagram of the main frame structure;
[0036] Figure 8 This is a schematic diagram of the structure of the fixing plate.
[0037] Reference numerals: 1. Treadmill incline adjustment mechanism; 2. Main frame; 21. Fixing plate; 3. Eccentric component; 31. Triangular piece; 32. Eccentric hole; 4. Caster; 5. Screw; 51. Nut; 6. Shaft; 61. Spacer; 71. First protrusion; 72. Second protrusion; 81. First support surface; 82. Second support surface; 100. Running platform; 200. Electric lifting mechanism; 300. Handrail. Detailed Implementation
[0038] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.
[0039] like Figures 1 to 3 As shown, this embodiment discloses a treadmill with an incline adjustment mechanism, including a running platform 100 and handrails 300. An electric lifting mechanism 200 is provided on the lower front side of the running platform 100. The electric lifting mechanism 200 can adopt any existing mechanism capable of raising and lowering the front of the running platform. Two treadmill incline adjustment mechanisms 1 are provided on the lower rear side of the running platform 100, respectively located on the left and right sides of the lower end of the running platform 100.
[0040] like Figures 4 to 8As shown, the treadmill incline adjustment mechanism 1 includes a main frame 2 fixed to the underside of the running platform 100. The main frame 2 is a U-shaped sheet metal frame with two vertically extending fixing plates 21. The two fixing plates 21 are spaced apart along the left and right directions of the running platform 100 and welded to the running platform 100. An eccentric member 3 is provided between the two fixing plates 21. The eccentric member 3 is generally equilateral triangle and includes two triangular pieces 31 of the same size that are spaced apart from each other. An eccentric hole 32 is provided on the triangular piece 31, and the position of the eccentric hole 32 is offset from the geometric center of the triangular piece 31. A rotating shaft 6 passes through the eccentric hole 32. The rotating shaft 6 is a bolt and is screwed on by a nut 51 after passing through the eccentric hole 32 and the fixing plates 21, so that the eccentric member 3 can be rotated and fixed on the main frame 2. A spacer 61 is sleeved on the rotating shaft 6. The spacer 61 is located between the triangular piece 31 and the fixing plate 21, and the two ends of the spacer 61 are in contact with the triangular piece 31 and the fixing plate 21, respectively.
[0041] The eccentric component 3 includes a first support surface 81 and a second support surface 82 located on its circumferential side. Both the first support surface 81 and the second support surface 82 are used to contact the ground. The first support surface 81 and the second support surface 82 are switched by the eccentric rotation of the eccentric component 3. The distance between the first support surface 81 and the rotation axis is H1, and the distance between the second support surface and the rotation axis is H2, where H1 is less than H2. Casters 4 are rotatably fixed at all three ends of the eccentric component 3. The casters 4 are screwed to nuts 51 by screws 5 passing through the casters 4 and two triangular pieces 31. In this case, the casters 4 on the first support surface 81 and the second support surface 82 are actually in direct contact with the ground, while the contact between the first support surface 81 and the second support surface 82 and the ground is actually indirect. In some embodiments, the casters 4 may not be provided, that is, the eccentric component 3 has a certain thickness and can be directly supported on the ground. In this case, the first support surface 81 and the second support surface 82 can directly contact the ground.
[0042] Since the eccentric member 3 is equilateral triangular, the first support surface 81 and the second support surface 82 are arranged adjacent to each other. A limiting structure is provided between the fixing piece 21 and the triangular piece 31. The limiting structure consists of two first protrusions 71 on the side wall of the fixing piece 21 and a second protrusion 72 on the eccentric member. The first protrusions 71 are stamped to make a certain area of the fixing piece 21 protrude outward, and the second protrusion 72 extends towards the fixing piece 21. The two first protrusions 71 are located on the forward and reverse rotation paths of the second protrusion 72, respectively. When the first support surface 81 or the second support surface 82 rotates to face the ground, one of the first protrusions 71 abuts against the second protrusion 72 to limit the eccentric member 3 from continuing to rotate.
[0043] When using the treadmill, if the user needs to adjust the incline within a positive angle range, the eccentric part 3 can be rotated 120° in the positive direction when adjusting the running platform 100. This will cause the first support surface 81 of the eccentric part 3 to be supported on the ground, making the rear end of the running platform 100 lower than the front end, thus forming a positive incline of approximately 1.5°.
[0044] If the user needs the treadmill to have a negative incline, that is, the initial angle of the running platform 100 is negative, the eccentric part 3 can be rotated 120° in the opposite direction when adjusting the running platform 100, so that the second support surface 82 of the eccentric part 3 is supported on the ground, so that the rear end of the running platform 100 is higher than the front end, forming a negative incline of approximately -1.5°.
Claims
1. A treadmill incline adjustment mechanism, characterized in that, include: The main frame is used to fix it to the underside of the rear end of the treadmill; as well as An eccentric component is rotatably fixed on the main frame and supports the running platform. The rotation axis of the eccentric component on the main frame is offset from its geometric center. The eccentric component includes at least a first support surface and a second support surface for contacting the ground. The first support surface and the second support surface are switched by eccentric rotation of the eccentric component. The distance between the first support surface and the rotation axis is smaller than the distance between the second support surface and the rotation axis. When the first support surface is on the ground, the running track has a positive slope; when the second support surface is on the ground, the running track has a negative slope.
2. The treadmill incline adjustment mechanism according to claim 1, characterized in that: The eccentric component is in the shape of an equilateral triangle, and the two circumferential sides of the eccentric component form the first support surface and the second support surface.
3. The treadmill incline adjustment mechanism according to claim 2, characterized in that: Each end of the eccentric component is rotatably fixed with a caster.
4. The treadmill incline adjustment mechanism according to claim 1, 2, or 3, characterized in that: The first support surface and the second support surface are located on adjacent sides of the eccentric member. A limiting structure is provided between the main frame and the eccentric member. The limiting structure consists of two first protrusions on the side wall of the main frame and a second protrusion on the eccentric member. The two first protrusions are located on the forward and reverse rotation paths of the second protrusion, respectively. When the first support surface or the second support surface rotates to face the ground, one of the first protrusions abuts against the second protrusion to limit the eccentric member from continuing to rotate.
5. The treadmill incline adjustment mechanism according to claim 1, 2, or 3, characterized in that: The main frame includes two fixed plates spaced apart along the left and right direction of the running platform. A rotating shaft is provided between the two fixed plates. The rotating shaft passes through the eccentric member to realize the rotational fixation of the eccentric member and the main frame. A spacer is provided between the eccentric member and the rotating shaft. The two ends of the spacer are in contact with the eccentric member and the fixed plate, respectively.
6. The treadmill incline adjustment mechanism according to claim 5, characterized in that: The fixing plate is welded and fixed to the running platform.
7. The treadmill incline adjustment mechanism according to claim 3, characterized in that: The eccentric component includes two triangular pieces spaced apart along the left and right direction of the running platform. The triangular pieces are fixed together by screws and nuts, and the screws pass through the caster to achieve rotational fixation between the caster and the eccentric component.
8. The treadmill incline adjustment mechanism according to claim 1, 2, or 3, characterized in that: The main frame consists of two frames, which are spaced apart on both sides of the running track in the left-right direction.
9. A treadmill having the treadmill incline adjustment mechanism according to any one of claims 1-8, characterized in that: It includes a running platform and handrails. The running platform has an electric lifting mechanism on the lower front side and a treadmill incline adjustment mechanism on the lower rear side.