Patent Application
20250128118
The present patent relates to the field of treadmills, in particular to a slope adjustment mechanism for treadmill.
Treadmills of prior arts are provided with an adjustment mechanism for adjusting the slope of the treadmill, the adjustment mechanism includes two methods: manual adjustment or automatic adjustment. Among them, the manual adjustment method has a relatively simple structure and mostly relies on mechanical cooperation for limiting. Therefore, the overall cost of manual adjustment is low and it is widely used on small treadmills. The treadmills of prior arts adopt a structure of manually slop adjusting, with reference to a treadmill with manually adjustable slope disclosed in a Chinese patent with announcement number CN203196211U, the treadmill includes a base and a treadmill platform arranged on the base, the base is provided with an adjustment mechanism, the adjustment mechanism includes adjustment plates symmetrically arranged on both sides of the base, a lifting frame is provided on the adjustment plate, a slide groove is provided on the adjustment plate, a pair of bolts and nuts are slidably arranged in the slide groove, the lifting frame is pivotally connected to the bolt, at least two limiting grooves of different heights are provided on the adjustment plate, and the limiting column that can be engaged with the limiting groove is provided on the lifting frame.
According to the above structure, it can be known that the adjustment plate and the lifting frame are connected by bolts to ensure that the lifting frame can rotate, a matching gap is left between the adjustment plate and the lifting frame, so as to avoid the locking of the adjustment plate and the lifting frame when the bolts and nuts are tightened. Firstly, the size of the matching gap needs to be controlled by machining accuracy. Secondly, when the treadmill is installed, tightening the bolts and nuts with different forces will also produce different locking forces on the adjustment plate and the lifting frame. The above two reasons will lead to different gap size between the adjustment plate and the lifting frame. If the gap is too small, the lifting frame will be difficult to rotate when adjusting the slope, after frequent angle adjustment, the gap between the adjustment plate and the lifting frame may become larger due to wear and tear. When running, the treadmill body vibrates, which makes it easy for the adjustment plate and the lifting frame to collide and produce abnormal noise. Therefore, the tightness of the manually adjustment mechanism for treadmill slope adjusting is difficult to control, resulting in inconvenience in using the slope adjustment function.
In view of the shortcoming of prior arts, the tightness of the manual adjustment mechanisms for treadmill slope adjusting is difficult to control, the purpose of the present invention is to provide a slope adjustment mechanism for treadmill that maintains consistent tightness when adjusting the slope or in use.
In order to solve the above problems, the present invention is provided by the following technical solutions:
A slope adjustment mechanism for treadmill, the adjustment mechanism including a base fixedly arranged below the end of a treadmill body, a rotating member rotatably arranged on the base and an adjustment bracket pivotally connected to the rotating member, an accommodation groove is arranged on the adjustment bracket for partially placement of the base, a limiting mechanism for limiting the adjustment bracket to a specified angle and limiting the further turning is provided between the base and the adjustment bracket, a damping mechanism with a damping force for limiting the adjustment bracket from axial movement along the rotating member is provided between the base and the adjustment bracket; the damping mechanism including placing grooves recessed at the rotating member on the two side walls of the accommodation groove, and the support pads embedded in the placing grooves and abutted against the base on opposite sides respectively; the support pad is sleeved on the rotating member, and the thickness of the support pad is greater than the depth of the placing groove.
By adopting the above technical solution, and the thickness of the support pad in is greater than the depth of the placing groove, so that there is a gap between the base and the adjustment bracket to avoid direct contact, which can reduce the inconsistent damping force after locking. Compared with the existing slope adjustment mechanism for treadmill, the adjustment mechanism in the present invention has damping force during adjustment or use. During assembly, the locking force is adjusted so that the adjustment bracket is in a state where it can be smoothly turned but not loose. Since there is no direct contact between the base and the adjustment bracket, the wear degree of the base and the adjustment bracket can be effectively reduced. In addition, the support pad limits the axial movement of the adjustment bracket along the rotating member, which can effectively reduce the abnormal noise caused by the loosening and collision of the adjustment mechanism when the treadmill is in use, making the slope adjustment the and the daily use of the treadmill more convenient.
Preferably, the rotating member includes a group of locking bolts passing through the base and the adjustment bracket, and the support pad is made of elastic material.
By adopting the above technical solution, when the support pad is worn and the damping force is reduced, the locking bolt can be tightened to increase the damping force. The support pad is made of elastic material to reduce the damping force being too large due to over-tightening.
Preferably, the connecting blocks is provided between the support pads and is connected to the support pads at both ends respectively.
By adopting the above technical solution, the support pads on both sides are connected into a whole through the connecting block, and there is no need to respectively matching with the placing groove during assembly, which can simplify the assembly steps.
Preferably, the limiting mechanism includes a first limiting part for limiting the turning of the adjustment bracket when the treadmill body is in a horizontal state, and a second limiting part for limiting the turning of the adjustment bracket when the treadmill body is in an inclined state.
Preferably, the first limiting part includes a first positioning hole provided on the base, a positioning pin provided in the first positioning hole, and a limiting groove provided on the adjustment bracket and abutted against the positioning pin to limit the turning of the adjustment bracket.
Preferably, the first limiting part also includes an auxiliary positioning member, which includes a second positioning hole provided on the base, a plug hole provided on the adjustment bracket and aligned with the second positioning hole when the adjustment bracket is restricted from turning, and a pin that is plugged into the second positioning hole and the plug hole, and one end of the pin is provided with a pull ring for easy removal.
By adopting the above technical solution, when the treadmill is in use, the positioning pin and the plug jointly share the weight of the treadmill and the user, thereby enhancing the load capacity of the treadmill and extending the service life of the first limiting part.
Preferably, the second limiting part includes a stop plane provided on the side of the adjustment bracket facing away from the accommodating groove, when the adjustment bracket flips over more than 90°, the stop plane abuts against the treadmill body to limit further turning of the adjustment bracket.
Preferably, the adjustment mechanism is symmetrically arranged on both sides of the treadmill body, and a roller is arranged at one end of the adjustment bracket away from the rotating member.
The patent adopts the above technical solutions, which has significant beneficial effects: the adjustment mechanism of the present invention has damping force when adjusting or using, the locking force is adjusted during assembly so that the adjustment bracket can be smoothly turned but not loose. Since there is no direct contact between the base and the adjustment bracket, the wear degree of the base and the adjustment bracket can be effectively reduced. In addition, the support pad limits the axial movement of the adjustment bracket along the rotating member, which can effectively reduce the abnormal noise caused by the loosening and collision of the adjustment mechanism when the treadmill is in use, making the slope adjustment the and the daily use of the treadmill more convenient.
Other features, objects and advantages of the present invention will be more clearly and completely by the detailed description of the non-limiting embodiments with reference to the attached drawings (
A slope adjustment mechanism for treadmill, as shown in
A limiting mechanism is provided between the base 2 and the adjustment bracket 4, which is used for limiting the adjustment bracket 4 to a specified angle and limiting the further turning of the adjustment bracket 4. The limiting mechanism includes a first limiting part that limits the turning of the adjustment bracket 4 when the treadmill body 1 is in a horizontal state. As shown in
The limiting mechanism also includes a second limiting part for limiting the turning of the adjustment bracket 4 when the treadmill body 1 is in an inclined state. As shown in
In combination with the above structure, referring to
Hereinafter, embodiments of the present invention have been described in detail with reference to the accompanying drawings. While the description above refers to the particular embodiments of the present invention, it will be understood that many modifications may be made without departing from the spirit thereof. Any equivalent replacement or modification would fall within the protection scope of the present invention.
| Number | Date | Country | Kind |
|---|---|---|---|
| 202322823636.3 | Oct 2023 | CN | national |
