A mechanism for switching zero-gravity attitude
By designing controllable drive components and a rotating seat in the office chair, a zero-gravity posture can be achieved, solving the problem that traditional office chairs cannot achieve the function of an electric sofa, and providing better comfort and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- UE FURNITURE CO LTD
- Filing Date
- 2025-04-15
- Publication Date
- 2026-06-16
AI Technical Summary
Traditional office chairs cannot achieve the zero-gravity posture function of electric sofas, and leaning back can easily cause unease and the risk of tipping over.
Design a zero-gravity attitude switching mechanism that includes a base, a rotating seat, and a drive component. The user controls the rotating seat to rotate on the base via the drive component to achieve a zero-gravity attitude and avoid excessively rapid tilting and tipping.
It provides a more comfortable and healthier way to rest, eliminates feelings of unease and the risk of falling, and meets the physical support needs of long hours of office work.
Smart Images
Figure CN224357277U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of furniture, and in particular to a mechanism for switching zero-gravity posture. Background Technology
[0002] In modern work environments, prolonged sitting at a desk has numerous negative impacts on people's health, such as lower back pain and neck discomfort. Therefore, improving the comfort and functionality of office chairs has become an important development direction for the industry.
[0003] Traditional office chairs have relatively limited functions, mostly offering only basic features like height adjustment and reclining, which are insufficient to meet people's needs for comprehensive body support and relaxation during long hours of work. With rising living standards and increased health awareness, people expect office chairs to provide functions similar to the zero-gravity posture of electric sofas.
[0004] Electric sofas can adjust the human body to a near-weightless state, distributing pressure evenly across the body, effectively reducing spinal pressure, promoting blood circulation, and greatly alleviating fatigue. However, this zero-gravity function is currently mainly used in electric sofas, with limited application in office chairs. This is primarily because office chair design needs to consider more space constraints and diverse usage scenarios, making it challenging to directly transplant the zero-gravity technology of electric sofas into office chairs. For example, office chairs require a more compact structural design, more precise posture adjustment control, and greater stability and durability.
[0005] In particular, it is difficult to control when the office chair tilts backward. A too rapid overall tilt backward can make users feel uneasy and may even cause the office chair to tip over. Summary of the Invention
[0006] To address the aforementioned technical problems, this utility model provides a mechanism for switching to a zero-gravity posture, comprising a base, a rotating seat, and a drive assembly. The drive assembly can be controlled by the user to rotate the rotating seat on the base. A backrest is also rotatably mounted on the rotating seat. When the backrest tilts backward and the rotating seat also tilts backward, the mechanism is in a zero-gravity posture, allowing the user to rest more comfortably and healthily in the seat. The speed of the drive assembly is controlled by the user, completely avoiding the possibility of excessively rapid tilting, eliminating the resulting anxiety, and completely avoiding the risk of tipping over.
[0007] The technical solution of this utility model is implemented as follows:
[0008] A mechanism for switching zero-gravity posture includes a base, a rotating seat, and a drive assembly. The rotating seat is rotatably mounted on the base, and a backrest is rotatably mounted on the rotating seat. Both the rotating seat and the backrest have a tilting state formed after rotating backward. The drive assembly is mounted on the rotating seat and the base, and the drive assembly is configured to be controlled by the user to drive the rotating seat to rotate on the base. When both the rotating seat and the backrest are in the tilting state, the mechanism is in a zero-gravity posture.
[0009] First, this mechanism can be applied to seats to create a zero-gravity posture, allowing users to lie back in the seat in a zero-gravity posture for a more comfortable and healthy way to rest. Second, in this mechanism, the drive component is controllable and its movement is controlled by the user, which in turn controls the rotation of the rotating seat and the base, thus controlling the switching of the zero-gravity posture. During this process, the tilting speed is controlled by the user, and the movement of the drive component takes time. Compared to tilting directly by one's own weight, this method completely avoids the possibility of tilting too quickly, eliminating the resulting anxiety and completely avoiding the risk of tipping over.
[0010] Preferably, the drive assembly includes a drive component and a follower mechanism. The two ends of the follower mechanism are rotatably mounted on the base and the rotating seat, respectively. The drive component is connected to the follower mechanism and drives its movement. The follower mechanism is arranged in the front-to-back direction, and under the drive of the drive component, it rotates the rotating seat and the base. The drive component is controlled by the user, making the process of switching to the resting state more controllable and maintaining stability during movement, resulting in a more comfortable experience throughout the state switching process.
[0011] Preferably, the follower mechanism is a lead screw and lead nut assembly, with the lead screw connected to the drive component. The drive component can be an electric actuator.
[0012] Preferably, the driving component is an electric motor. Electric motors offer good controllability and are more suitable for this mechanism.
[0013] Preferably, a rotating component is fixedly mounted on the driving component, and the rotating component is rotatably mounted on the base or rotating seat. A follower mechanism passes through the rotating component and is connected to the driving component for transmission. The driving assembly is telescopic, and its telescopic movement causes the rotating seat to rotate relative to the base. The rotating component mounted on the driving component can adapt to the rotation of the rotating seat.
[0014] Preferably, the rotating component is rotatably mounted on the rotating base via two third rotating shafts, which are spaced apart to the left and right. The follower mechanism is connected to the driving component via the two third rotating shafts. This arrangement effectively avoids the need for a follower mechanism.
[0015] Preferably, the base and the rotating seat are rotatably connected via a first rotating shaft, the drive assembly is rotatably connected to the base via a second rotating shaft, and the drive assembly is rotatably connected to the rotating seat via a third rotating shaft. The telescopic movement of the drive assembly can drive the rotating seat to rotate relative to the base, and the rotational configuration of the drive assembly can adapt to the rotation of the rotating seat.
[0016] Preferably, the base is provided with a first protrusion, the rotating seat is provided with a second protrusion, the second rotating shaft is provided on the first protrusion, and the third rotating shaft is provided on the second protrusion.
[0017] Preferably, the first boss has a first mounting gap in the middle, and the second boss has a second mounting gap in the middle; there are two second and three third rotating shafts, with the two second rotating shafts inserted into the first boss and their ends exposed at the first mounting gap. Similarly, the two third rotating shafts are exposed at the second mounting gap. The two ends of the drive assembly are respectively located in the first and second mounting gaps, and the exposed ends of the second and third rotating shafts are inserted into the drive assembly. The drive assembly is arranged in the front-to-back direction, and the rotating shafts are arranged in the left-to-right direction. Since the front-to-back transmission of the drive assembly cannot be interrupted, the drive assembly is rotated and installed by setting mounting gaps and exposing rotating shafts on both sides. Other installation methods cannot achieve the advantage of a compact structure.
[0018] The design starting point, concept, and beneficial effects of this utility model, which adopts the above technical solution, are as follows:
[0019] First, this mechanism can be applied to seats to create a zero-gravity posture, allowing users to lie back in the seat in a zero-gravity posture for a more comfortable and healthy way to rest. Second, in this mechanism, the drive component is controllable and its movement is controlled by the user, which in turn controls the rotation of the rotating seat and the base, thus controlling the switching of the zero-gravity posture. During this process, the tilting speed is controlled by the user, and the movement of the drive component takes time. Compared to tilting directly by one's own weight, this method completely avoids the possibility of tilting too quickly, eliminating the resulting anxiety and completely avoiding the risk of tipping over. Attached Figure Description
[0020] Figure 1 This is a schematic diagram showing the user sitting on the chair in its normal position in an embodiment of the present invention;
[0021] Figure 2 This is a side view of the seat with the backrest reclined in an embodiment of the present invention.
[0022] Figure 3 This is a side view of the seat in a resting state in an embodiment of the present invention;
[0023] Figure 4This is a schematic diagram of a user lying on the chair in a zero-gravity posture during a resting state, as described in an embodiment of the present invention.
[0024] Figure 5 This is a schematic diagram showing the rotating seat rotating on the base in an embodiment of the present invention;
[0025] Figure 6 This is a three-dimensional structural diagram of the drive component being disposed in the rotating seat in an embodiment of the present invention;
[0026] Figure 7 This is a three-dimensional structural diagram of the drive component arranged in the rotating seat in the resting state of this utility model in an embodiment;
[0027] Figure 8 This is a three-dimensional structural diagram of the rotating seat and the base in an embodiment of the present invention;
[0028] Figure 9 This is a schematic diagram illustrating the state transition triangle changes when the rotating seat rotates in an embodiment of the present invention;
[0029] Figure 10 This is a three-dimensional structural diagram of the rotating seat in an embodiment of the present invention;
[0030] Figure 11 This is a three-dimensional structural diagram of the fixed base and the lifting gas spring in the embodiment of this utility model. Figure 1 ;
[0031] Figure 12 This is a three-dimensional structural diagram of the fixed base and the lifting gas spring in the embodiment of this utility model. Figure 2 .
[0032] The reference numerals in the attached drawings are as follows: base 1; lifting gas spring 2; first rotating shaft 3; main module 4; seat 41; backrest 42; rotating seat 5; accommodating space 51; clearance groove 52; mounting seat 53; surrounding plate 54; footrest 6; seat part 7; second rotating shaft 8; third rotating shaft 9; first protrusion 11; first mounting gap 111; second protrusion 12; second mounting gap 121; driving component 16; follower mechanism 17; lead screw 171; lead nut 172; rotating component 18. Detailed Implementation
[0033] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.
[0034] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.
[0035] In the description of this utility model, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0036] The specific implementation of this utility model is as follows:
[0037] like Figure 1-7 As shown, this utility model provides a mechanism for switching zero-gravity posture, including a base 1, a rotating seat 5, and a drive assembly. The rotating seat 5 is rotatably mounted on the base 1, and a backrest 42 is rotatably mounted on the rotating seat 5. Both the rotating seat 5 and the backrest 42 have a tilting state formed after rotating backward. The drive assembly is mounted on the rotating seat 5 and the base 1, and the drive assembly is configured to be controlled by the user to drive the rotating seat 5 to rotate on the base 1. When both the rotating seat 5 and the backrest 42 are in the tilting state, the mechanism is in a zero-gravity posture.
[0038] First, this mechanism can be applied to seats to create a zero-gravity posture, allowing users to lie back in the seat in a zero-gravity posture for a more comfortable and healthy way to rest. Second, in this mechanism, the drive component is controllable and its movement is controlled by the user, thereby controlling the rotation of the rotating seat 5 and the base 1, i.e., controlling the switching of the zero-gravity posture. During this process, the tilting speed is controlled by the user, and the movement of the drive component takes time. Compared to tilting directly by its own weight, this method completely avoids the possibility of tilting too quickly, eliminating the resulting anxiety and completely avoiding the risk of tipping over.
[0039] The mechanism is applied to an ergonomic chair, specifically, the chair includes:
[0040] The base 1 is configured to connect the lifting gas spring 2 to the seat, and the base 1 is provided with a first rotating shaft 3;
[0041] The main module 4 includes a seat 41 and a backrest 42 that are rotatably connected together. The seat 41 includes a rotating base 5 with a receiving space 51. A clearance groove 52 is provided at the middle of the bottom of the rotating base 5. The base 1 enters the receiving space 51 through the clearance groove 52. The rotating base 5 is rotatably connected to the base 1 through the first rotating shaft 3.
[0042] A drive assembly is disposed in the accommodating space 51. The two ends of the drive assembly are respectively rotatably mounted on the rotating seat 5 and the base 1. The drive assembly is configured to provide stable support for the rotation of the base 1 and the main body module 4.
[0043] The chair back 42 has a normal state and a reclining state; in the normal state, the chair back 42 is roughly vertical, so that the human body can sit normally; in the reclining state, the chair back 42 is tilted backward on the seat 41, so that the human body can lie back.
[0044] The seat has a resting position. When the seat is in the resting position, the backrest 42 is tilted back, the main body module 4 rotates relative to the base 1, the front end of the seat 41 tilts up, and the backrest 42 tilts further back until the knees and heart are at the same level. When both the rotating seat 5 and the backrest 42 are in the tilting position, the mechanism is in a zero-gravity posture, which is the resting position of the seat.
[0045] In existing technologies, relying solely on the reclining of the backrest 42 and the accompaniment of the seat 41 is insufficient to achieve a zero-gravity posture. In this solution, the seat 41 and backrest 42 are treated as a single module, connected to the base 1 via the first pivot 3. This allows the backrest 42 to rotate independently relative to the seat 41, while the backrest 42 and seat 41 also rotate together on the base 1. Thus, when the backrest 42 is in a reclining state, the main module 4 can be further reclined, increasing the range of the body's fall. Simultaneously, the seat 41 can lift the lower body, thereby lowering the heart height and increasing the knee height, ensuring that the knees and heart are at the same level, achieving a zero-gravity posture. In a zero-gravity posture, users will not experience numbness even after prolonged lying down, and because the heart can supply blood to the whole body without overcoming much gravity, it also reduces the pressure on the heart, improving the user's resting experience and promoting better health.
[0046] In this design, the base 1 and drive components are enclosed within the main module 4, thereby increasing the integrity of the chair and achieving a more compact structure. The purpose of using the seat 41 and backrest 42 as a single module is not only to achieve modularity of the chair, but also to make the most of the relatively large seat 41 by enclosing the modules (base 1 and drive components) that enable zero-gravity posture, thus concealing them and maintaining the appearance of the chair itself and preserving the integrity of the original office chair. Furthermore, the sufficient internal volume of the rotating seat 5 makes the overall structure more compact, thereby seamlessly integrating zero-gravity posture functionality into an office chair with basic functions. Only in the resting state will a small portion of the base 1 be exposed in the rotating seat 5.
[0047] In addition, there is no traditional chassis in this solution. The seat 41 in this solution integrates the chassis function into one unit. The base 1 is not a traditional chassis, but only a support seat that connects to the lifting gas spring 2 and enables the main module 4 to rotate.
[0048] Specifically, in the resting state, the main body module 4 tilts backward at an angle of 18-20° on the base 1, and the backrest 42 rotates relative to the seat 41 at an angle of 30-40°. After the main body module 4 rotates further, the backrest 42 will only tilt upward at about 30°, causing the upper body of the human body to fall more, while the seat 41 will tilt upward at about 20° to lift the lower body of the human body, thus achieving a zero-gravity posture. Even if the backrest 42 of the seat with poor rotation ability tilts backward at more than 20°, at this time, combined with the backward tilt angle of the main body module 4, the effect of zero gravity can be roughly achieved.
[0049] To achieve a zero-gravity posture while resting, setting the footrest to 6 will be more effective; for example Figure 4 As shown, the seat 41 is also equipped with a footrest 6, which is retractably located at the front of the seat 41. When the seat is in a resting state, the footrest 6 can extend forward from the seat 41 to support the legs and feet, improving comfort during rest. The footrest 6 can also be folded into the seat 41 when the user is sitting normally. Furthermore, in the resting state, the footrest 6 tilts downward from back to front, forming an angle between the seat 41 and the footrest 6. The front end of the seat 41 is adjacent to the rear end of the footrest 6, and the junction of the seat 41 and the footrest 6 forms an upwardly protruding knee support. The angle between the seat 41 and the footrest 6 makes it more comfortable for the user's legs to bend during rest, and the upwardly protruding knee support can support the bent knee and maintain the knee height, allowing the posture to be in a zero-gravity state.
[0050] Unlike traditional chairs, the backrest 42 is connected to the seat 41, specifically, as Figure 2 , 3 As shown in Figures 6-10, the rotating seat 5 includes an upwardly protruding mounting base 53, on which the backrest 42 is rotatably mounted. Since this chair has no chassis, the rotation method of the backrest 42 differs from that of a traditional office chair. The backrest 42 is directly rotatably mounted on the rotating seat 5, achieving the same reclining effect. The seat 41 also includes a seat portion 7, which slides back and forth on the rotating seat 5. The seat portion 7 extends upward and is rotatably connected and linked to the lower end of the backrest 42. When the backrest 42 rotates backward, it drives the seat portion 7 to slide forward. The seat portion 7 supports the buttocks. The rotatable connection point between the seat portion 7 and the backrest 42 is located below the rotatable connection point between the backrest 42 and the mounting base 53, allowing the seat portion 7 to be pushed forward when the backrest 42 reclines, thus making the backrest 42 more comfortable when switched to a reclining position.
[0051] Furthermore, the rotating seat 5 covers the base 1, and there is a gap between the base 1 and the rotating seat 5. Specifically, the gap in the front-to-back direction is only 2mm, and the gap in the left-to-right direction is only 3mm. Therefore, the overall integrity is better and it prevents fingers from being pinched. The bottom of the rotating seat 5 is provided with a surrounding plate 54 protruding upward around the clearance groove 52. The base 1 is located between the surrounding plates 54. The first rotating shaft 3 is located between the surrounding plates 54 and the base 1. The first rotating shaft 3 is arranged in the left-to-right direction, and there are two first rotating shafts 3. The two first rotating shafts 3 are located on the left and right end faces of the base 1 respectively and are rotatably connected to the left and right plates of the surrounding plate 54.
[0052] The position of the first rotating shaft 3 also affects the stability of switching to the resting state, such as Figure 9-12 As shown, in this embodiment, the first rotating shaft 3 is located at the lower front part of the base 1; and in the front-back direction, the first rotating shaft 3 is closer to the middle of the base 1 than the front end of the base 1; in the height direction, the first rotating shaft 3 is located below the top of the lifting gas spring 2, and in the front-back direction, the position of the first rotating shaft 3 coincides with that of the lifting gas spring 2. First, if the position of the first rotating shaft 3 is too far back, there is a risk of tipping over when the main module 4 rotates backward. Second, if the position of the first rotating shaft 3 is too far forward, it is difficult for the user to drive the main module 4 to rotate backward using only the force of falling backward. Moreover, the rotating seat 5 located in front of the base 1 will approach the base 1 when rotating, and the base 1 is located inside the rotating seat 5, so interference is likely to occur. Therefore, this solution solves the above problems. The position of the first rotating shaft 3 in the height direction lowers the height of the rotation point of the main module 4, thereby lowering the overall center of gravity and reducing the risk of tipping over when the main module 4 rotates backward. The lifting air spring 2 supports the base 1 and the main module 4. By adjusting the position of the first rotating shaft 3 in the front-rear direction, it aims to align the rotation point of the main module 4 with the support point in the same front-rear position, thus solving the problems of tipping over and difficulty in driving the main module 4 to rotate while lying down. Simultaneously, as... Figure 9 As shown, the length of the base 1 protruding forward from the lifting rod 2 is less than the length of its protruding backward from the lifting rod 2.
[0053] Furthermore, the drive assembly is rotatably mounted on the base 1 via the second rotating shaft 8, and rotatably mounted on the rotating seat 5 via the third rotating shaft 9. When the main body module 4 rotates backward on the base 1, the positions of the first rotating shaft 3 and the second rotating shaft 8 are relatively fixed, while the position of the third rotating shaft 9 relative to the first rotating shaft 3 and the second rotating shaft 8 changes. The first rotating shaft 3, the second rotating shaft 8, and the third rotating shaft 9 together form a state transition triangle. When switching to the resting state, the shape of the state transition triangle changes. The third rotating shaft 9 can be located in front of the second rotating shaft 8 or behind the second rotating shaft 8. When the third rotating shaft 9 is located in front of the second rotating shaft 8, the state transition triangle becomes smaller when the main body module 4 rotates backward. When the third rotating shaft 9 is located behind the second rotating shaft 8, the state transition triangle becomes larger when the main body module 4 rotates backward. The drive assembly acts on the state transition triangle to ensure stability when the shape of the state transition triangle changes.
[0054] In addition, other configuration schemes for the drive component are also feasible. For example, one end of the drive component can be rotatably mounted on the rotating seat 5 via the third rotating shaft 9, and the other end of the drive component can be rotatably mounted on the first rotating shaft 3. That is, the drive component can also be directly mounted on the first rotating shaft 3. In this case, although there is no state transition triangle as mentioned above, it can still act on the rotating seat 5 and the base 1 to maintain the stability of the rotation of the main module 4. In this embodiment, the first configuration scheme for the drive component is selected.
[0055] The installation of the second rotating shaft 8 and the third rotating shaft 9 is as follows:
[0056] like Figure 6-12 As shown, the base 1 is provided with a first protrusion 11, and the rotating seat 5 is provided with a second protrusion 12. Both the first protrusion 11 and the second protrusion 12 protrude into the accommodating space 51. The first protrusion 11 is provided with a second rotating shaft 8, and the second protrusion 12 is provided with a third rotating shaft 9. The two ends of the drive component are rotatably connected to the first protrusion 11 and the second protrusion 12 through the second rotating shaft 8 and the third rotating shaft 9, respectively. The first protrusion 11 and the second protrusion 12 are arranged at intervals and are parallel to each other. The second protrusion 12 can be in front of the first protrusion 11 or behind the first protrusion 11, corresponding to the position of the second and third rotating shafts 9. Different relative positions will cause different changes in the shape of the state transition triangle, but the effect is the same. In this embodiment, the second protrusion 12 is located in front of the first protrusion 11, that is, the third rotating shaft 9 is located in front of the second rotating shaft 8. When switching to the resting state, the third rotating shaft 9 moves upward and backward and approaches the second rotating shaft 8, thereby changing the shape of the state transition triangle and reducing the area of the state transition triangle. From front to back, the thickness of the base 1 increases, and the upper part of the base 1 has an upwardly inclined slope to avoid the second protrusion 12 located in front of the base 1.
[0057] The specific driver components are as follows:
[0058] like Figure 6 , 7 As shown, the drive assembly includes a drive component 16 and a follower mechanism 17. The two ends of the follower mechanism 17 are rotatably mounted on the base 1 and the rotating seat 5, respectively. The drive component 16 is connected to the follower mechanism 17 and is used to drive the follower mechanism 17 to move. The follower mechanism 17 is arranged in the front-back direction. Under the drive of the drive component 16, the follower mechanism 17 drives the main body module 4 and the base 1 to rotate. The drive component 16 is controlled by the user, making the process of switching to the resting state more controllable and also maintaining stability during movement.
[0059] The drive assembly can be an electric actuator, i.e., the drive element 16 is a motor, and the follower mechanism 17 is a lead screw and nut assembly. The lead screw 171 is driven by the drive element 16 and rotates together on the third rotating shaft 9, while the nut 172 is rotatedly connected to the second rotating shaft 8. The drive element 16 is fixedly connected to a rotating element 18, which is rotatably mounted on the second boss 12 via the third rotating shaft 9. The follower mechanism 17 passes through the rotating element 18 and is driven by the drive element 16.
[0060] The first boss 11 has a first mounting gap 111 in the middle, and the second boss 12 has a second mounting gap 121 in the middle. There are two second rotating shafts 8 and two third rotating shafts 9, arranged alternately on the left and right sides. The two second rotating shafts 8 are inserted into the upper end of the first boss 11 and both protrude at the first mounting gap 111. Similarly, both third rotating shafts 9 protrude at the second mounting gap 121. The two ends of the drive assembly are respectively located in the first mounting gap 111 and the second mounting gap 121. The rotating member 18 is located in the second mounting gap 121, and the ends of the two third rotating shafts 9 are inserted into the rotating member 18. The end of the follower mechanism 17 away from the drive member 16 is located in the first mounting gap 111, and the ends of the two second rotating shafts 8 are inserted therein. The follower mechanism 17 is connected to the drive member 16 via the two third rotating shafts 9.
Claims
1. A mechanism for switching zero-gravity attitudes, characterized in that: It includes a base, a rotating seat, and a drive assembly. The rotating seat is rotatably mounted on the base, and a backrest is rotatably mounted on the rotating seat. Both the rotating seat and the backrest have a tilting state formed after rotating backward. The drive assembly is mounted on the rotating seat and the base, and the drive assembly is configured to be controlled by the user to drive the rotating seat to rotate on the base. When both the rotating seat and the backrest are tilted, the mechanism is in a zero-gravity state.
2. The mechanism for switching zero-gravity attitude according to claim 1, characterized in that: The drive assembly includes a drive component and a follower mechanism. The two ends of the follower mechanism are rotatably mounted on the base and the rotating seat, respectively. The drive component is connected to the follower mechanism and is used to drive the follower mechanism to move. The follower mechanism is arranged in the front-back direction. Under the drive of the drive component, the follower mechanism drives the rotating seat and the base to rotate.
3. The mechanism for switching zero-gravity attitude according to claim 2, characterized in that: The follower mechanism is a lead screw and lead nut assembly, with the lead screw connected to the drive component for transmission.
4. The mechanism for switching zero-gravity attitude according to claim 2, characterized in that: The driving component is a motor.
5. The mechanism for switching zero-gravity attitude according to claim 2, characterized in that: The driving component is fixedly mounted on a rotating component, which is rotatably mounted on a base or rotating seat. The follower mechanism passes through the rotating component and is connected to the driving component for transmission.
6. The mechanism for switching zero-gravity attitude according to claim 5, characterized in that: The rotating component is rotatably mounted on the rotating seat via two third rotating shafts, which are arranged at intervals on the left and right. The follower mechanism is connected to the driving component through the two third rotating shafts.
7. The mechanism for switching zero-gravity attitude according to claim 1, characterized in that: The base and the rotating seat are rotatably connected via a first rotating shaft, the drive assembly is rotatably connected to the base via a second rotating shaft, and the drive assembly is rotatably connected to the rotating seat via a third rotating shaft.
8. The mechanism for switching zero-gravity attitude according to claim 7, characterized in that: The base is provided with a first protrusion, the rotating seat is provided with a second protrusion, the second rotating shaft is provided on the first protrusion, and the third rotating shaft is provided on the second protrusion.
9. The mechanism for switching zero-gravity attitude according to claim 8, characterized in that: The first boss has a first mounting gap in the middle, and the second boss has a second mounting gap in the middle; there are two second and three third rotating shafts. The two second rotating shafts are inserted into the first boss and their ends are exposed at the first mounting gap. Similarly, the two third rotating shafts are exposed at the second mounting gap. The two ends of the drive assembly are respectively set in the first mounting gap and the second mounting gap, and the exposed ends of the second and third rotating shafts are inserted into the drive assembly.