Limiting rotation structure
By using the frictional sliding cooperation between the limiting block and the movable block, the problem of complex limiting rotation structures in existing technologies is solved, achieving a limiting effect that is simple to operate and can be adjusted at any angle.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHEJIANG SAIHAN IND & TRADE CO LTD
- Filing Date
- 2025-07-19
- Publication Date
- 2026-05-15
AI Technical Summary
In existing technologies, the limit rotation structure is complex, making it difficult to achieve a simple and easy-to-operate limit function, especially in equipment such as treadmills.
It employs a frictional sliding fit between a limiting block and a movable block, and limits the rotation range through an arc-shaped movable wall, providing two limiting points to achieve adjustment at any angle.
It achieves a limit rotation function with simple structure and convenient operation, and can be adjusted at any angle within the set range, thus improving the limit effect.
Smart Images
Figure CN224245250U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of rotational fit structure technology, and in particular to a limiting rotational structure. Background Technology
[0002] With the improvement of people's living standards and the promotion of national fitness activities, the use of fitness equipment can help people exercise conveniently without being restricted by the venue. Treadmills, in particular, are very popular.
[0003] In the existing technology, for parts on treadmills or other equipment that need to rotate and have a limiting function, the rotating part is usually achieved through a rotating shaft, while the limiting part is usually more complex in structure.
[0004] For components that require rotation but also have a limiting function, such as the display screen on a treadmill, the corresponding limiting rotation structure is illustrated in patent document CN107789791A, "A Treadmill Component and Its Display Screen Rotation Structure." This structure uses a threaded tube to drive a gear mechanism for lateral movement. When the two gears are engaged, the display screen is limited; when disengaged, the display screen can rotate. See paragraph 0030 of the specification for details. Figure 3 As shown.
[0005] Therefore, it is necessary to design a simpler limiting rotation structure. Utility Model Content
[0006] This utility model addresses the shortcomings of existing technologies by providing a limiting rotation structure. It limits the rotation range of the component to be rotated by a limiting block and provides two limiting points. At the same time, through the frictional sliding cooperation between the movable block and the arc-shaped movable wall, the component to be rotated can be stopped at any position within the limiting range, realizing the adjustment of any angle within the set range. Moreover, the structure is simple and easy to operate.
[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution:
[0008] A limiting rotation structure, including
[0009] The first connecting unit, which is fixedly connected to the first component, includes an arc-shaped movable wall and one or more limiting blocks arranged on the arc-shaped movable wall;
[0010] The second connecting unit, which is fixedly connected to the second component, includes a movable block movably arranged at the arc-shaped movable wall and limited by the limiting block; and...
[0011] A limiting shaft passes through the first connecting unit and the second connecting unit, and laterally limits both.
[0012] In the above technical solution, preferably, the first connecting unit includes a main body and a connector arranged at the end of the main body, and the arc-shaped movable wall and the limiting block are both arranged on the connector.
[0013] In the above technical solution, preferably, two limiting blocks are provided, respectively arranged at both ends of the arc-shaped movable wall, so as to limit the range of motion of the second connecting unit.
[0014] In the above technical solution, preferably, the movable block is formed by extending laterally to one side from the main body of the second connecting unit.
[0015] In the above technical solution, preferably, the movable block is frictionally and slidably connected to the arc-shaped movable wall;
[0016] The limiting block includes an extension portion, and the inner sidewall of the extension portion and the arc-shaped outer peripheral wall of the second connecting unit are in frictional sliding engagement.
[0017] In the above technical solution, preferably, the inner wall of the second connecting unit and the outer wall of the first connecting unit are both flat surfaces.
[0018] In the above technical solution, preferably, the limiting shaft includes a screw that passes through the first connecting unit and the second connecting unit and a nut that is threaded onto the outer end of the screw. When the nut is tightened, the first connecting unit and the second connecting unit are laterally limited.
[0019] In the above technical solution, preferably, the left and right ends of the first connecting unit are respectively configured with corresponding second connecting units.
[0020] In the above technical solution, preferably, the second component is a display screen, and the first component is a support rod for supporting the display screen or a treadmill handrail surface;
[0021] The back of the second component is fixed with a U-shaped part, and the two second connecting units are respectively fixed on the two arms of the U-shaped part. The limiting shaft is synchronously inserted through the two arms of the U-shaped part.
[0022] In the above technical solution, preferably, the first component is a display screen, the second component is a treadmill column, the left and right sides of the first component are respectively arranged with corresponding second components, each second component is respectively fixed with a corresponding second connecting unit, and the left and right ends of the first component are respectively arranged with first connecting units that cooperate with the corresponding second connecting units.
[0023] The beneficial effects of this utility model are:
[0024] This utility model limits the rotation range of the rotating component by a limiting block, providing two limiting points. At the same time, through the frictional sliding cooperation between the movable block and the arc-shaped movable wall, the rotating component can be stopped at any position within the limiting range, realizing the adjustment of any angle within the set range. It has a simple structure and is easy to operate. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the present invention.
[0026] Figure 2 This is a schematic diagram of the disassembled state of this utility model.
[0027] Figure 3 This is a schematic diagram showing the separation state of the connector and the second connecting unit of this utility model.
[0028] Figure 4 This is a schematic diagram of the second connecting unit of this utility model.
[0029] Figure 5 This is a schematic diagram of the connector of this utility model.
[0030] Figure 6 This is a schematic diagram showing the fit between the present invention and the U-shaped component.
[0031] Figure 7 This is a schematic diagram of the first embodiment of the present invention.
[0032] Figure 8 This is a schematic diagram of the second embodiment of the present invention.
[0033] Figure 9 This is a schematic diagram of the third embodiment of the present invention.
[0034] Figure 10 This is a schematic diagram of the separation state in the third embodiment of the present invention. Figure 1 .
[0035] Figure 11 This is a schematic diagram of the separation state in the third embodiment of the present invention. Figure 2 . Detailed Implementation
[0036] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments:
[0037] See Figures 1-11 A limiting rotation structure includes a first connecting unit 1, a second connecting unit 2, and a limiting shaft 3.
[0038] The first connecting unit 1 is fixedly connected to the first component 91 and includes a main body 11 and a connector 12 disposed at the end of the main body 11. The connector 12 may be disposed at only one end of the main body 11, or corresponding connectors 12 may be disposed at both ends of the main body 11. As one embodiment, the connector 12 may be fixed to the main body 11 in the form of a protrusion and a groove. Of course, the connector 12 and the main body 11 may also be designed as an integral part. As one embodiment, both the main body 11 and the connector 12 are circular components.
[0039] The connector 12 includes an arc-shaped movable wall 121 and one or more limiting blocks 122 arranged on the arc-shaped movable wall 121. In one embodiment, two limiting blocks 122 are provided on the arc-shaped movable wall 121, and the two limiting blocks 122 are arranged at intervals. For example, if the outer peripheral wall of the connector 12 is a circular outer peripheral wall, the two limiting blocks 122 are symmetrically arranged on the circular outer peripheral wall, and the area between the two limiting blocks 122 is the arc-shaped movable wall 121. The two limiting blocks 122 define the range of motion of the second connecting unit 2.
[0040] The second connecting unit 2 is fixedly connected to the second component 92 and is used to cooperate with the connecting member 12. It includes a movable block 21 movably arranged at the arc-shaped movable wall 121, and a limiting block 122 limits the range of motion of the movable block 21. If there are two limiting blocks 122, the two limiting blocks 122 are the two ends of the movable block 21.
[0041] As one option, the movable block 21 is formed by extending laterally to one side from the main body position of the second connecting unit 2, so that after the second connecting unit 2 and the first connecting unit 1 are assembled together, the outer end of the extended movable block 21 is located at the arc-shaped movable wall 121 and can be limited by the limiting block 122.
[0042] Meanwhile, the limiting block 122 may also have a lateral extension portion, so that after the second connecting unit 2 and the first connecting unit 1 are assembled together, the inner sidewall of the extension portion of the limiting block 122 and the arc-shaped outer peripheral wall 22 of the second connecting unit 2 form a matching relationship, which can be a friction sliding connection method to improve the limiting effect.
[0043] Furthermore, the movable block 21 can also be provided with two similar to the limiting block 122. When the part that needs to be rotated rotates to the end of the range of motion, each movable block 21 abuts against the corresponding limiting block 122 to improve the limiting effect.
[0044] As one option, the inner wall of the second connecting unit 2 and the outer wall of the first connecting unit 1 are both flat surfaces. That is, the outer wall of the connector 12 corresponds to the inner wall of the second connecting unit 2. Both of these side walls are flat surfaces to facilitate their cooperation.
[0045] As one option, the second connecting unit 2 may be arranged at only one end position of the first connecting unit 1, or a second connecting unit 2 may be arranged at each of the two end positions of the first connecting unit 1.
[0046] In this embodiment, the movable block 21 is frictionally slidably connected to the arc-shaped movable wall 121. The friction between the movable block 21 and the arc-shaped movable wall 121 limits the rotation of the component. This structure is suitable for components where the frictional force is sufficient to provide the required limiting force, such as the display screen on a treadmill. It can be understood that the above structure is suitable for rotatable positions where the required limiting force is not too large, allowing the component to stop at any angle within the limiting range. Of course, the frictional sliding cooperation between the extended portion of the limiting block 122 and the arc-shaped outer peripheral wall 22 of the second connecting unit 2, as described above, can enhance the frictional effect and improve the positioning stability at any angle within the set range.
[0047] The limiting shaft 3 includes a screw 31 that passes through the first connecting unit 1 and the second connecting unit 2, and a nut 32 that is threaded onto the outer end of the screw 31. For example, through holes adapted to the screw 31 are respectively opened at the main body 11 of the first connecting unit 1, the connecting member 12 of the first connecting unit 1, and the center position of the second connecting unit 2, so that the screw 31 can pass through the above-mentioned components by means of the corresponding through holes.
[0048] In this embodiment, the nut 32 is threadedly engaged with the screw 31 so that the nut 32 can be locked onto the screw 31. When the nut 32 is locked, the first connecting unit 1 and the second connecting unit 2 are laterally limited.
[0049] like Figure 7 As shown, this is the first implementation method in this embodiment. The second component 92 is a display screen, and the first component 91 is a support rod for supporting the display screen. That is, the display screen can rotate and adjust its angle on the support rod, and can be limited when it is rotated to a suitable angle.
[0050] In this embodiment, a U-shaped member 921 is fixedly provided on the back side of the second component 92, and the U-shaped member 921 is specifically as follows: Figure 6 As shown, it includes a main body and two support arms 922 located at both ends of the main body. Two second connecting units 2 are respectively fixed on the two support arms 922. The fixing method can be welding, integral molding or forming a mating relationship through the cooperation of protrusions and grooves.
[0051] Furthermore, the limiting shaft 3 not only passes through the first connecting unit 1 and the second connecting unit 2, but also simultaneously passes through the two support arms 922 of the U-shaped part 921. Then, through the cooperation of the nut 32 arranged on the outside of the support arms 922 of the U-shaped part 921 and the screw 31, after assembly, it is as follows: Figure 7 As shown.
[0052] like Figure 8 As shown, this is the second implementation method in this embodiment. The second component 92 is a display screen, and the first component 91 is a treadmill handrail surface. Similarly, a U-shaped component 921 is fixed on the back of the second component 92, which is the same as the first implementation method. The only difference is the installation position. In the first implementation method, the U-shaped component is installed in the middle of the display screen. In the second implementation method, the U-shaped component is installed at the bottom of the display screen. At the same time, a metal block can also be fixed on the metal pipe inside the treadmill handrail surface and fixed to the main body of the first connecting unit 1 through the metal block.
[0053] like Figures 9-11 As shown, this is the third implementation method in this embodiment. The first component 91 is a display screen, and the second component 92 is a treadmill column. Specifically, the first component 91 has corresponding second components 92 arranged on its left and right sides. Each second component 92 is fixed with a corresponding second connecting unit 2. The left and right ends of the first component 91 are fixed to the main body 11 of the first connecting unit 1. For example, the first component 91 includes a metal tube 911 (which can serve as a reinforcement). The main body 11 of the first connecting unit 1 is fixed to the metal tube 911. At the same time, holes for the limiting shaft to pass through are opened at the left and right ends of the first component 91. Through the cooperation of the first connecting unit 1 and the second connecting unit 2, and through the limiting of the limiting shaft, the first component 91 can rotate relative to the second component 92 to adjust its positioning angle.
[0054] As one option, the second component 92 is open at the top and hollow inside, with a hole at the top for the screw 31 to pass through, and the nut 32 is arranged in the inner cavity at the top of the second component 92.
[0055] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A limiting rotation structure, characterized in that: include The first connecting unit, which is fixedly connected to the first component, includes an arc-shaped movable wall and one or more limiting blocks arranged on the arc-shaped movable wall; The second connecting unit, which is fixedly connected to the second component, includes a movable block that is movably arranged at the arc-shaped movable wall and limited by the limiting block; as well as A limiting shaft passes through the first connecting unit and the second connecting unit, and laterally limits both.
2. The limiting rotation structure according to claim 1, characterized in that: The first connecting unit includes a main body and a connector arranged at the end of the main body, and the arc-shaped movable wall and the limiting block are both arranged on the connector.
3. A limiting rotation structure according to claim 1 or 2, characterized in that: Two limiting blocks are provided, respectively arranged at both ends of the arc-shaped movable wall, to limit the range of motion of the second connecting unit.
4. The limiting rotation structure according to claim 1, characterized in that: The movable block is formed by extending laterally to one side from the main body of the second connecting unit.
5. A limiting rotation structure according to claim 1 or 4, characterized in that: The movable block is frictionally and slidably connected to the arc-shaped movable wall; The limiting block includes an extension portion, and the inner sidewall of the extension portion and the arc-shaped outer peripheral wall of the second connecting unit are in frictional sliding engagement.
6. The limiting rotation structure according to claim 1, characterized in that: The inner wall of the second connecting unit and the outer wall of the first connecting unit are both flat surfaces.
7. The limiting rotation structure according to claim 1, characterized in that: The limiting shaft includes a screw that passes through the first connecting unit and the second connecting unit, and a nut that is threaded onto the outer end of the screw. When the nut is tightened, the first connecting unit and the second connecting unit are laterally limited.
8. A limiting rotation structure according to claim 1 or 7, characterized in that: The first connecting unit has corresponding second connecting units at its left and right ends respectively.
9. A limiting rotation structure according to claim 8, characterized in that: The second component is a display screen, and the first component is a support rod or a treadmill handrail surface for supporting the display screen; The back of the second component is fixed with a U-shaped part, and the two second connecting units are respectively fixed on the two arms of the U-shaped part. The limiting shaft is synchronously inserted through the two arms of the U-shaped part.
10. A limiting rotation structure according to claim 1 or 7, characterized in that: The first component is a display screen, the second component is a treadmill column, and the corresponding second components are arranged on the left and right sides of the first component. Each second component is fixed with a corresponding second connecting unit, and the left and right ends of the first component are respectively arranged with the first connecting unit that cooperates with the corresponding second connecting unit.