Linkage mechanism
By designing a linkage mechanism, the problem of lack of linkage between components in fitness equipment was solved, enabling the fitness equipment to adapt to different fitness movements and improving the training effect of the hip and leg muscles.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-08
- Publication Date
- 2026-04-07
AI Technical Summary
Existing fitness equipment lacks a linkage mechanism when training different parts of the body, which causes the various parts to be unable to adapt and adjust during the execution of the movement, thus affecting the training effect.
Design a linkage mechanism to achieve dynamic linkage between the first and second moving parts, ensuring that the second moving part can move closer to or further away from the first moving part when the first moving part rotates, thus meeting the needs of different fitness scenarios.
It improves the adaptability and versatility of fitness equipment, ensuring that the glutes and leg muscles receive a full and precise workout during hip thrust exercises, thus enhancing the training effect.
Smart Images
Figure CN224085924U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fitness equipment, specifically a linkage mechanism. Background Technology
[0002] Currently, there are many types of fitness equipment on the market for hip thrust exercises, but most of them have certain limitations in design.
[0003] When training various parts of the body, fitness equipment used by athletes or fitness enthusiasts lacks a standardized linkage mechanism. When the user exerts force, the various components cannot adaptively coordinate and adjust according to the movements of the fitness equipment. Utility Model Content
[0004] To address one of the shortcomings of existing technologies, this utility model provides a linkage mechanism to solve the problem of linkage between components in fitness equipment.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a linkage mechanism, comprising:
[0006] The first moving part is rotatably connected to the external structure;
[0007] The second motion section is located on one side of the first motion section;
[0008] A linkage component is disposed between the first moving part and the second moving part;
[0009] When the first moving part rotates relative to the external structure, the second moving part can move closer to or away from the first moving part under the action of the linkage component.
[0010] Preferably, the first moving part includes:
[0011] The first moving body is the moving structure of the first moving part, and the first moving body is the active force-applying structure of the human body when this linkage mechanism is used;
[0012] The first connecting structure is used to rotatably connect the first moving body to the external structure.
[0013] The second connection structure is located on one side of the first connection structure, and the first moving body is linked with the linkage component through the second connection structure.
[0014] Preferably, the second moving part includes:
[0015] The second moving body can be linked with the human body. When the first moving part rotates, the second moving body can move closer to or away from the first moving part under the action of the linkage component.
[0016] The third connecting structure allows the second moving body to be movably connected to the external structure.
[0017] Preferably, the third connecting structure is a rigid structure, with one side of the third connecting structure rotatably connected to the external structure and the other side rotatably connected to the second moving body;
[0018] The linkage component can be linked with the second moving body or the third connecting structure.
[0019] Preferably, the linkage component includes:
[0020] The transmission component is linked to the first moving body on one side and to the second moving body on the other side.
[0021] When the first moving body rotates, the second moving body moves toward or away from the transmission component.
[0022] Preferably, the transmission component and the external structure are rotatably connected; the linkage assembly further includes:
[0023] A first linkage structure is disposed between the transmission component and the first moving body, and the first linkage structure is connected to the first moving body through the second connecting structure.
[0024] The second linkage structure is disposed between the transmission component and the second moving part.
[0025] Preferably, the first linkage structure is a rigid structure, with one side of the first linkage structure rotatably connected to the transmission component, and the other side rotatably connected to the first moving body through a second connection structure.
[0026] Preferably, one side of the second linkage structure is rotatably connected to the transmission component, and the other side can be linked with the second moving body or the third connecting structure.
[0027] Preferably, the second linkage structure is a rigid structure, and the linkage component further includes:
[0028] The third linkage structure is disposed between the second linkage structure and the third connection structure, and the third linkage structure and the second linkage structure are rotatably connected on the side away from the transmission component;
[0029] The third linkage structure is connected to the second moving body or the third connecting structure.
[0030] Preferably, the third linkage structure is provided with a card interface on the side away from the transmission component, and the third linkage structure can be engaged with the third connection structure through the card interface;
[0031] The snap-fit positions of the third linkage structure and the third connection structure are located close to the second moving part.
[0032] Compared with the prior art, it has the following beneficial effects: In this linkage mechanism, the first moving part and the second moving part are linked with different parts of the human body respectively. When the first moving part rotates relative to the external structure, the second moving part can move closer to or away from the first moving part under the action of the linkage component.
[0033] This linkage mechanism is not limited to hip thrust training equipment; it can also be adapted for other fitness movements that require coordination between the upper and lower limbs, or between the torso and lower limbs. Simply adjusting the structure and position of the first and second moving parts can meet the needs of different fitness scenarios, demonstrating strong versatility and practicality.
[0034] Taking the hip thrust exercise as an example, the first movement part is linked to the back of the body, and the second movement part is linked to the feet. When the upper body rotates, the second movement part can move closer to or further away from the first movement part accordingly, avoiding the problem of excessive changes in the angle between the user's calves and thighs in traditional equipment. This allows the glutes and leg muscles to be fully and precisely exercised during the hip thrust exercise, greatly improving the training effect. Attached Figure Description
[0035] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application. Figure 1 ;
[0036] Figure 2 This is a schematic diagram of the overall structure of an embodiment of this application. Figure 2 ;
[0037] Figure 3 This is an application reference illustration of an embodiment of this application. Figure 1 ;
[0038] Figure 4 This is an application reference illustration of an embodiment of this application. Figure 2 .
[0039] In the picture:
[0040] 100. External structure;
[0041] 1. First moving part; 11. First moving body; 12. First connecting structure; 13. Second connecting structure; 2. Second moving part; 21. Second moving body; 22. Third connecting structure; 3. Linkage component; 31. Transmission component; 32. First linkage structure; 33. Second linkage structure; 34. Third linkage structure. Detailed Implementation
[0042] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0043] Please see Figure 1 and Figure 2 This application provides the following technical solutions:
[0044] A linkage mechanism includes a first moving part 1, a second moving part 2, and a linkage component 3. The first moving part 1 is connected to an external structure 100 via a rotatable connection. The external structure 100 can be a support frame of fitness equipment, and the first moving part 1 can rotate around its connection point with the frame. For ease of explanation, taking the external structure 100 placed on the ground as an example, the second moving part 2 is located on one side of the first moving part 1, and the linkage component 3 is provided between the second moving part 2 and the first moving part 1. The linkage component 3 enables the second moving part 2 to move in tandem with the rotation of the first moving part 1.
[0045] In practical use, the first moving part 1 and the second moving part 2 are respectively linked to different parts of the human body. In other words, different parts of the human body can apply force to the first moving part 1 and the second moving part 2. When the human body applies force to make the first moving part 1 rotate relative to the external structure 100, the linkage component 3 links the second moving part 2, causing the second moving part 2 to move closer to or away from the first moving part 1. For example, on fitness equipment, the first moving part 1 is linked to the upper body of the human body, and the second moving part 2 is linked to the lower body of the human body. When the upper body of the human body rotates, through the action of the linkage component 3, the lower body will move closer to or away from the upper body accordingly.
[0046] For example, traditional hip thrust machines often design the back support structure and foot pedal structure as relatively independent components. During the hip thrust exercise, there is no linkage mechanism between the user's back movement and the foot pedal movement. Because the foot pedals cannot follow the corresponding back movement, the angle between the user's lower leg and thigh changes accordingly. This change in angle affects the effectiveness of the hip thrust exercise, preventing the glutes and leg muscles from receiving a sufficient and precise workout, thus reducing the efficiency of the exercise.
[0047] Taking the application of this mechanism to hip thrust exercises as an example, the human back is supported by the first moving part 1, while the feet are in contact with the second moving part 2. When the buttocks are pushed upwards during a hip thrust exercise, the back transmits force to the first moving part 1, causing it to rotate. As the first moving part rotates, the second moving part 2 moves towards the first moving part 1. This prevents excessive changes in the angle between the thighs and calves during the hip thrust exercise, resulting in better exercise performance. For the implementation of the linkage component 3, existing linkage or traction structures can be used, as long as the second moving part 2 can follow the movement of the first moving part 1.
[0048] Based on the above implementation scheme, the first motion unit 1 includes a first motion body 11, a first connecting structure 12, and a second connecting structure 13. The first motion body 11 is the core structure of the first motion unit 1, serving as the active force-applying structure for the human body during the use of the linkage mechanism. The first motion body 11 can be a frame, a plate, or other structure, which can directly contact the human body, or it can be attached with a corresponding pad connecting structure, indirectly contacting the human body through the pad. Taking the hip thrust motion as an example, the human body can apply force by leaning against the first motion body 11, thereby causing the first motion body 11 to rotate relative to the external structure 100.
[0049] The first moving body 11 is rotatably connected to the external structure 100 via the first connecting structure 12. The first connecting structure 12 can be a rotating shaft or a joint, allowing the first moving body 11 to rotate around the connection point with the external structure 100.
[0050] The second connecting structure 13 is located on one side of the first connecting structure 12. The first moving body 11 is linked with the linkage component 3 through the second connecting structure 13. The second connecting structure 13 is also a rotating shaft or joint, which is sufficient to transmit the motion of the first moving body 11 to the linkage component 3.
[0051] by Figure 1 Taking the shown direction as an example, the first connecting structure 12 and the second connecting structure 13 used in this solution are both shaft-type connecting structures, and the axes of the shafts of the first connecting structure 12 and the second connecting structure 13 are parallel. Figure 1 The status displayed for this organization is Status 1. Figure 2 The state of the mechanism shown is state two. The first moving body 11 rotates clockwise by an angle, becoming the direction of state two. In state one, the second connecting structure 13 is located diagonally below the first connecting structure 12, and the shaft of the second connecting structure 13 rotates around the shaft of the first connecting structure 12. The axial distance between the axes of rotation of the second connecting structure 13 and the first connecting structure 12 is the rotation radius of the shaft of the second connecting structure 13 itself.
[0052] In this structural design, the first connecting structure 12 serves as the connection point between the first moving part 1 and the external structure 100, and also as the first connection position when the entire mechanism is used in combination with other mechanisms. The second connecting structure 13 belongs to the internal connection position of the mechanism itself, and is not constrained by the external connecting structure except for the spatial structure. By clearly defining the connection positions between the mechanism and the external structure 100, the clarity of the overall integrated manufacturing scheme of the mechanism is improved, as well as the ease of understanding for users during self-installation.
[0053] As for the second motion unit 2, it also requires a corresponding support structure. The second motion unit 2 can be connected to the external structure 100, or it can be directly connected to the extension structure of the first motion unit 1 or the linkage component 3, as long as it can limit the motion trajectory of the second motion unit 2 to a certain extent.
[0054] Based on the above implementation scheme, the first moving body 11 includes a connecting part and a human body part. The connecting part is located on one side of the first moving body 11, facing the external structure 100. The first connecting structure 12 and the second connecting structure 13 are both mounted on the connecting part, that is, the first connecting structure 12 and the second connecting structure 13 are located on the same side of the first moving body 11. The human body part is located away from the connecting part, and when the linkage mechanism is in use, the human body part faces the user. Taking the hip thrust movement as an example, the human body part faces the user's back. The human body part can be designed in an ergonomic shape to facilitate the user's application of force. Alternatively, the human body part can be provided with a structure that facilitates connection with the back pad. The structure of the human body part can be selectively set according to actual needs.
[0055] Based on the above implementation scheme, this scheme provides a structural form for connecting the second motion part 2 and the external structure 100, which is the configuration form mentioned above when the external structure 100 serves as a supporting frame. The second motion part 2 includes a second motion body 21 and a third connecting structure 22. The second motion body 21 can be linked with the human body. When the first motion part 1 rotates, under the action of the linkage component 3, the second motion body 21 can move closer to or further away from the first motion part 1. For example, in a hip thrust fitness equipment, the external structure 100 is the base frame, and the second motion body 21 can be a pedal assembly, which facilitates the user to step on it during hip thrust movements. The second motion body 21 is movably connected to the external structure 100 through the third connecting structure 22. The third connecting structure 22 can be a rotating joint, a sliding guide rail, a slide, etc., as long as it allows the second motion body 21 to perform corresponding movements on the external structure 100.
[0056] Through this structure, the first moving body 11 and the second moving body 21 serve as the structures that directly generate forces on the human body during movement. Meanwhile, the third connecting structure 22 serves as the second connection point for connecting this mechanism to the external structure 100.
[0057] Based on the above implementation scheme, the third connecting structure 22 is a rigid structure, with one side rotatably connected to the external structure 100 and the other side rotatably connected to the second moving body 21. Figure 1 Taking the direction shown as an example, the third connecting structure 22 can be a strip-shaped plate, with its lower end rotatably connected to the outer structure 100 and its upper end rotatably connected to the lower side of the second moving body 21. The advantage of this connection form is that the movement trajectory of the second moving body 21 is not a straight line, but has a certain curvature. This movement trajectory can better match the changes in leg movements when the human body performs hip thrusts, so that the angle between the lower leg and the thigh is always maintained at nearly 90° during the hip thrust.
[0058] Based on the above implementation plan, Figure 3 and Figure 4 This diagram illustrates part of the structure when applied to a hip thrust training device. The second moving body 21 is a rectangular frame, with a foot pedal attached to its upper side. The third connecting structure 22 is an approximately "H"-shaped frame. Two third connecting structures 22 are positioned below the second moving body 21, one higher and one lower, respectively, rotatably connecting to the lower sides of the second moving body 21. This allows the second moving body 21 to be angled, better conforming to the user's foot posture when pedaling.
[0059] When this linkage mechanism is in use, the rotation direction of the first moving body 11 relative to the external structure 100 is taken as rotation direction A, and the rotation direction of the third connecting structure 22 relative to the external structure 100 is taken as rotation direction B. Rotation directions A and B are in the same direction. Taking the aforementioned switch from state one to state two as an example, rotation direction A is... Figure 1 and Figure 2If the rotation is clockwise, then the rotation direction B is also clockwise. That is, when the first moving body 11 rotates clockwise, the third connecting structure 22 rotates around its connecting axis with the external structure 100. It's important to note that unlike the overall clockwise rotation of the third connecting structure 22, the second moving body 21 is also rotatably connected to the second moving body 21, and there is no limit to their direction of rotation. Based on the change in foot position during the hip thrust exercise, during the dynamic change from state one to state two, the second moving body 21 rotates counterclockwise relative to the third connecting structure 22. This design provides users with a better hip thrust exercise experience. Combined with foot movement, the user's calves and thighs can more naturally maintain an angle of approximately 90°, thus achieving better training results.
[0060] Based on the above implementation scheme, the linkage component 3 includes a transmission component 31. One side of the transmission component 31 is linked to the first moving body 11, and the other side is linked to the second moving body 21. When the first moving body 11 rotates, the transmission component 31 transmits the motion of the first moving body 11 to the second moving body 21, causing the second moving body 21 to move toward or away from the transmission component 31. For example, the transmission component 31 can be a pulley with a cable wrapped around it. One end of the cable is connected to the second connecting structure 13, and the other end is connected to the third connecting structure 22. When the first moving body 11 rotates, it can apply a traction force to the second moving body 21. Similar to the pulley structure, it can also be a belt and a synchronous pulley, or a gear transmission can be used.
[0061] It should be noted that if a pulley-type connection is used for hip thrusting, when the hips are pushed up, the first moving body 11 rotates, and the second moving body 21 pulls towards the first moving body 11. However, as the user's hips move down, the second moving body 21 may have difficulty returning to its original position, meaning it may be difficult to move away from the first moving body. Therefore, the return of the third connecting structure 22 needs to be considered. A torsion spring or tension spring can be used to facilitate its return to its original position.
[0062] Based on the above implementation scheme, and considering the aforementioned problem, this scheme adopts a rigid transmission structure to... Figure 2 Taking state two as an example, when the user relaxes their body, their buttocks drop, and the first moving body 11 rotates counterclockwise. With the help of the rigid linkage structure, the transmission component 31 rotates clockwise, which applies a thrust to the third connecting structure 22, pushing it away from the first moving body 11. The specific implementation of this thrust will be explained in more detail below.
[0063] And for Figure 1In the state shown, when the first moving body 11 rotates clockwise, it is only necessary to satisfy the connection form between the second moving body 21 and the third connecting structure 22 of the second moving part 2 and the external structure 100. Even if the linkage component 3 does not apply traction force in this state, the human leg will naturally pull the second moving body 21 toward the first moving body 11 due to the change in the waist and hip position angle.
[0064] Based on the above implementation scheme, the transmission component 31 of this scheme includes two plates, with a rotating shaft between the two plates. This rotating shaft rotatably connects the transmission component 31 to the external structure 100. The linkage assembly 3 also includes a first linkage structure 32 and a second linkage structure 33. The first linkage structure 32 and the second linkage structure 33 are located on opposite sides of the rotating shaft. In other words, the rotational connection point between the transmission component 31 and the external structure 100 is the first pivot point, the rotational connection point between the transmission component 31 and the first linkage structure 32 is the second pivot point, and the rotational connection point between the transmission component 31 and the second linkage structure 33 is the third pivot point. The first pivot point is located between the second pivot point and the third pivot point; the second pivot point faces the first moving body 11, and the third pivot point faces the second moving body 21. The first linkage structure 32 is located between the transmission component 31 and the first moving body 11, and is connected to the first moving body 11 through a second connecting structure 13. The first linkage structure 32 can be a connecting rod, a pull rope, a cable, or a connecting frame, etc., to transmit the motion of the first moving body 11 to the transmission component 31.
[0065] The second linkage structure 33 is disposed between the transmission component 31 and the second moving part 2, and is used to transmit the motion of the transmission component 31 to the second moving part 2. It can also be a rigid structure such as a connecting rod or connecting frame, or a flexible structure such as a rope or cable. Different connection methods can be selected according to the actual structure, such as hinges, hooks, etc. The specific linkage action will vary depending on the specific form of the first linkage structure 32 and the second linkage structure 33. If more emphasis is placed on the traction force on the second moving body 21 during the motion process, either a flexible or rigid linkage structure can be used. If more emphasis is placed on the pushing force on the second moving body 21 during the motion process, a rigid structure is preferred.
[0066] Based on the above implementation scheme, as mentioned earlier, the linkage mechanism of this scheme focuses on the pushing effect on the second moving body 21. Therefore, the first linkage structure 32 is selected as a rod supported by a rigid material. One end of the first linkage structure 32 is rotatably connected to the transmission component 31, and the other end is rotatably connected to the first moving body 11 through the second connecting structure 13. The second linkage structure 33 is also selected as a rigid rod-shaped structure. One end of its rod is rotatably connected to the transmission component 31, and the other side is linked with the third connecting structure 22.
[0067] Through this structure, during the transition from state one to state two, the second moving body 21 can move closer to the location of the transmission component 31; conversely, under the push of the transmission component 31 and the second linkage structure 33, the second moving body 21 moves away from the transmission component 31.
[0068] Based on the above implementation scheme, considering that the movement between the second linkage structure 33 and the third connecting structure 22 is more natural and easier to install, a third linkage structure 34 is also provided between the second linkage structure 33 and the third connecting structure 22. The third linkage structure 34 is rotatably connected to the side of the second linkage structure 33 away from the transmission component 31. At the same time, the third linkage structure 34 is connected to the third connecting structure 22. The connection form between the third linkage structure 34 and the third connecting structure 22 can be various, such as socketing, plugging, rotating connection, etc., as long as it can drive the third connecting structure 22 to rotate.
[0069] This solution presents a third linkage structure 34, one side of which is rotatably connected to the second linkage structure 33, and the other side is provided with a snap-fit interface. The snap-fit interface is square. The third connecting structure 22, which is close to the third linkage structure 34, is generally "H"-shaped, with its central rod being a square rod corresponding to the snap-fit interface. The third linkage structure 34 can be snapped into the square rod of the third connecting structure 22 through this snap-fit interface. This structure facilitates the disassembly and installation of this mechanism, bringing convenience to the transportation and sales process.
[0070] This device is not limited to hip thrust training equipment; it can also be adapted for other fitness movements that require coordination between the upper and lower limbs, or between the torso and lower limbs. Only the structure and position of the first moving body 11 and the second moving body 21 need to be adjusted.
[0071] In the description of this application and its embodiments, it should be understood that the terms "top", "bottom", "height", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0072] In this application and its embodiments, unless otherwise expressly specified and limited, the terms "set," "install," "connect," "link," "fix," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.
[0073] In this application and its embodiments, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0074] The foregoing disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described above. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.
[0075] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.
[0076] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.
Claims
1. A linkage mechanism, characterized in that, include: The first moving part is rotatably connected to the external structure; The second motion section is located on one side of the first motion section; A linkage component is disposed between the first moving part and the second moving part; When the first moving part rotates relative to the external structure, the second moving part can move closer to or away from the first moving part under the action of the linkage component.
2. The linkage mechanism as described in claim 1, characterized in that, The first moving part includes: The first moving body is the moving structure of the first moving part, and the first moving body is the force-applying structure of the human body when this linkage mechanism is used; The first connecting structure is used to rotatably connect the first moving body to the external structure. The second connection structure is located on one side of the first connection structure, and the first moving body is linked with the linkage component through the second connection structure.
3. The linkage mechanism as described in claim 2, characterized in that, The second moving part includes: The second moving body can be linked with the human body. When the first moving part rotates, the second moving body can move closer to or away from the first moving part under the action of the linkage component. The third connecting structure allows the second moving body to be movably connected to the external structure.
4. The linkage mechanism as described in claim 3, characterized in that, The third connection structure is a rigid structure. One side of the third connection structure is rotatably connected to the external structure, and the other side is rotatably connected to the second moving body. The linkage component can be linked with the second moving body or the third connecting structure.
5. The linkage mechanism as described in claim 4, characterized in that, The linkage component includes: The transmission component is linked to the first moving body on one side and to the second moving body on the other side. When the first moving body rotates, the second moving body moves toward or away from the transmission component.
6. The linkage mechanism as described in claim 5, characterized in that, The transmission component and the external structure are rotatably connected; the linkage assembly further includes: A first linkage structure is disposed between the transmission component and the first moving body, and the first linkage structure is connected to the first moving body through the second connecting structure. The second linkage structure is disposed between the transmission component and the second moving part.
7. The linkage mechanism as described in claim 6, characterized in that, The first linkage structure is a rigid structure. One side of the first linkage structure is rotatably connected to the transmission component, and the other side is rotatably connected to the first moving body through the second connection structure.
8. The linkage mechanism as described in claim 6, characterized in that, The second linkage structure is rotatably connected to the transmission component on one side, and can be linked with the second moving body or the third connecting structure on the other side.
9. The linkage mechanism as described in claim 8, characterized in that, The second linkage structure is a rigid structure, and the linkage component further includes: The third linkage structure is disposed between the second linkage structure and the third connection structure, and the third linkage structure and the second linkage structure are rotatably connected on the side away from the transmission component; The third linkage structure is connected to the second moving body or the third connecting structure.
10. The linkage mechanism as described in claim 9, characterized in that, The third linkage structure is provided with a card interface on the side away from the transmission component, and the third linkage structure can be connected to the third connection structure through the card interface; The snap-fit positions of the third linkage structure and the third connection structure are located close to the second moving part.