Table mechanism, seat and exercise device

By coordinating the signal-controlled locking and transmission components, the table mechanism can collapse in an emergency, thus resolving safety hazards when passengers move forward rapidly and improving both safety and functionality.

CN224675950UActive Publication Date: 2026-08-25GUANGZHOU AUTOMOBILE GROUP CO LTD
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Patent Information

Application Number
CN202521631941.5
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-31
Publication Date
2026-08-25
Estimated Expiration
2035-07-31

AI Technical Summary

Technical Problem

The existing tray table mechanism poses a safety hazard when passengers move forward rapidly (such as due to emergency braking), which may cause injury to passengers.

Method used

A tabletop mechanism was designed. Through the coordinated work of the mounting components, linkage components, rotation drive components, transmission components, and locking components, the locking components are controlled by signals to disengage from the transmission components in an emergency to achieve tabletop collapse, thereby avoiding injury to passengers. In a normal state, the angle of the support seat is adjusted.

Benefits of technology

In an emergency, the tray table prevents injury to passengers, while in a normal situation, it allows for flexible adjustment, improving both safety and ease of use.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application relates to the technical field of table plates, and specifically provides a table plate mechanism to improve safety, which comprises a mounting assembly, a bearing seat, a rotary driving piece, a transmission assembly and a locking assembly; the mounting assembly comprises a mounting piece, a first linkage piece and a second linkage piece, one end of the first linkage piece is rotationally connected with the mounting piece, and one end of the second linkage piece is rotationally connected with the mounting piece; the bearing seat is rotationally connected with the other end of the first linkage piece; the rotary driving piece is arranged on the bearing seat; the transmission assembly is rotationally connected with the bearing seat, the rotary driving piece is connected with the transmission assembly and is used for driving the transmission assembly to rotate; the locking assembly is arranged on the bearing seat and is used for locking the other end of the second linkage piece and the transmission assembly when a first signal is received and is used for separating the other end of the second linkage piece from the transmission assembly when a second signal is received. The application further provides a seat comprising a framework and the table plate mechanism and a sports device comprising the seat.
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Description

Technical Field

[0001] This application relates to the field of tabletop technology, specifically to a tabletop mechanism, a seat, and a motion device. Background Technology

[0002] Table mechanisms, which allow items to be placed when unfolded, are widely used in automobiles, airplanes, and other fields. Currently, most table mechanisms are manually operated for unfolding and folding. However, when a table mechanism is unfolded, it can cause injury to passengers if they move forward rapidly (e.g., due to emergency braking causing passengers to lean forward), posing a safety hazard. Utility Model Content

[0003] In view of the above, it is necessary to provide a table mechanism, a seat, and a motion device to improve safety.

[0004] This application provides a tabletop mechanism, including: The mounting assembly includes a mounting component, a first linkage component, and a second linkage component, wherein one end of the first linkage component is rotatably connected to the mounting component, and one end of the second linkage component is rotatably connected to the mounting component. The support base is rotatably connected to the other end of the first linkage component; A rotation drive component is mounted on the support base; A transmission assembly is rotatably connected to the support base, and a rotation drive is connected to the transmission assembly for driving the transmission assembly to rotate; A locking component, disposed on the support, is used to lock the other end of the second linkage member and the transmission component when a first signal is received, and to disengage from the other end of the second linkage member and the transmission component when a second signal is received.

[0005] In the aforementioned tabletop mechanism, the first signal and the second signal respectively represent different states of the motion device to which the tabletop mechanism is located. The first signal corresponds to the normal state of the motion device to which the tabletop mechanism is located, while the second signal corresponds to the emergency state such as collision or emergency braking. When the locking component receives the first signal, it locks the other end of the second linkage and the transmission component. The transmission component is driven to rotate by the rotating drive component, so that the transmission component drives the second linkage to rotate relative to the mounting component through the locking component, thereby realizing the rotation of the bearing seat. When the locking component receives the second signal, it disengages from the other end of the second linkage and the transmission component, so that the bearing seat is in a vertical state, thereby realizing the collapse of the tabletop mechanism.

[0006] Therefore, in an emergency, when the moving device containing the table mechanism experiences a collision, the locking assembly disengages from the second linkage and the transmission assembly to allow the table mechanism to collapse, preventing injury to passengers and thus improving safety. Furthermore, when the moving device containing the table mechanism is in a normal operating state, the rotation drive drives the transmission assembly to rotate, causing the transmission assembly to rotate relative to the mounting component via the locking assembly, thereby adjusting the angle of the support seat.

[0007] In some embodiments, the connection point between the first linkage member and the support base, the connection point between the first linkage member and the mounting member, and the connection point between the second linkage member and the locking assembly are collinear.

[0008] In some embodiments, the locking component includes: A linear drive element is disposed on the bearing seat; A locking element is connected to the linear drive element; The linear drive is used to drive the locking member to engage with the other end of the second linkage member and the transmission assembly when a first signal is received, and to drive the locking member to disengage from the other end of the second linkage member and the transmission assembly when a second signal is received.

[0009] In some embodiments, the locking element includes: A telescopic body, one end of which is connected to the linear drive member, so as to extend or retract relative to the linear drive member under the drive of the linear drive member; The retaining body is connected to the other end of the telescopic body and is used to retain the other end of the second linkage member and the transmission assembly.

[0010] Therefore, the telescopic body drives the retaining body to extend and retract under the drive of the linear drive component, which can reduce the space occupied by the locking component during movement and facilitate the miniaturization of the locking assembly.

[0011] In some embodiments, the transmission assembly includes: The transmission component is connected to the rotation drive component; The turbine is rotatably connected to the bearing and meshes with the transmission component to rotate under the drive of the transmission component; The locking element engages with the turbine clamp.

[0012] Therefore, achieving the rotation of the transmission component by meshing with the turbine is beneficial to improving the stability of the transmission component's rotation.

[0013] In some embodiments, the second linkage is located between the turbine and the linear drive, the turbine is located between the second linkage and the rotary drive, and the locking member passes through the second linkage and is inserted into the turbine.

[0014] Therefore, by rationally arranging the relative positions of the second linkage, turbine, and linear drive components, it is beneficial to achieve a miniaturized tabletop mechanism.

[0015] In some embodiments, the transmission element includes: A transmission rod is rotatably connected to the bearing seat, and one end of the transmission rod is connected to the rotation drive component; The worm gear is rotatably connected to the bearing seat and meshes with the other end of the transmission rod and the turbine, respectively, and the rotation axis of the worm gear is perpendicular to the rotation axis of the transmission rod.

[0016] Therefore, the meshing of the worm gear and the transmission rod can buffer the power output of the rotating drive component, which helps to improve the stability of the turbine rotation.

[0017] In some embodiments, the mounting assembly, the transmission assembly, and the locking assembly are all in two sets, with each set of the mounting assembly, the transmission assembly, and the locking assembly corresponding to each other. The two sets of transmission assemblies are located on opposite sides of the rotation drive member and between the two sets of mounting assemblies, and each set of locking assemblies is located on the side of the corresponding mounting assembly away from the transmission assembly.

[0018] Therefore, through the above arrangement, the load can be applied to the bearing seat from two positions, so that the load on the bearing seat is evenly distributed, thereby improving the stability of the bearing seat rotation.

[0019] In some embodiments, the support includes: The main frame supports the rotation drive component and the locking assembly, and is rotatably connected to the transmission assembly, the first linkage component and the second linkage component respectively; A cover is fitted onto the main frame and houses the rotation drive, the transmission assembly, and the locking assembly.

[0020] Therefore, the cover housing the rotating drive component, transmission assembly, and locking assembly prevents collisions with these components from external parts, thus extending their service life. Furthermore, the cover and main frame form a sleeve structure, with the rotating drive component, transmission assembly, and locking assembly housed within the cover, improving the aesthetics of the tabletop mechanism.

[0021] In some embodiments, the cover member has a limiting groove, which accommodates the end of the first linkage member away from the mounting member and the end of the second linkage member away from the mounting member.

[0022] Therefore, the limiting groove can limit the first and second linkage components, preventing them from shaking during rotation.

[0023] This application embodiment also provides a seat, including: skeleton; In the tabletop mechanism of the above embodiment, the mounting component of the tabletop mechanism is mounted on the frame.

[0024] In the aforementioned seat's table mechanism, when the motion device of the seat experiences emergency braking, the locking component disengages from the second linkage and the transmission component to achieve table mechanism collapse, preventing injury to passengers and thus improving safety. Furthermore, when the motion device of the seat is in normal operation, the table mechanism drives the transmission component to rotate via a rotation drive component. This, in turn, causes the transmission component to rotate relative to the mounting component via the locking component, thereby adjusting the angle of the support seat.

[0025] This application also provides a motion device, including the seat described in the above embodiment.

[0026] During emergency braking, the table mechanism installed in the aforementioned motion device collapses via a locking assembly, preventing injury to passengers and thus improving safety. When the motion device is in normal operation, the table mechanism drives the transmission assembly to rotate via a rotation drive component. This, in turn, causes the transmission assembly to rotate relative to the mounting component via the locking assembly, thereby adjusting the angle of the support seat. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the tabletop mechanism in an embodiment of this application.

[0028] Figure 2 for Figure 1 The diagram shows a partial structural schematic of the tabletop mechanism.

[0029] Figure 3 for Figure 2 The diagram shows the structure of the locking assembly and the turbine in the table mechanism.

[0030] Figure 4 for Figure 2 The diagram shows a partial structural schematic of the tabletop mechanism.

[0031] Explanation of main component symbols: Tabletop mechanism 100, mounting assembly 110, mounting part 111, first linkage part 112, second linkage part 113, bearing seat 120, main frame 121, cover part 122, limiting groove 122a, upper plate 1221, lower plate 1222, decorative strip 1223, rotation drive part 130, transmission assembly 140, transmission part 141, transmission rod 1411, worm gear 1412, worm 142, locking assembly 150, linear drive part 151, locking part 152, telescopic body 1521, holding body 1522. Detailed Implementation

[0032] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0033] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that allows communication between the two; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication of two elements or the interaction between two elements. In the description of this application, it should be noted that "multiple" means two or more, unless otherwise expressly and specifically limited. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0034] The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0035] Please see Figure 1 and Figure 2This application provides a tabletop mechanism 100, including a mounting assembly 110, a support base 120, a rotation drive component 130, a transmission assembly 140, and a locking assembly 150. The mounting assembly 110 includes a mounting member 111, a first linkage member 112, and a second linkage member 113. One end of the first linkage member 112 is rotatably connected to the mounting member 111, and one end of the second linkage member 113 is rotatably connected to the mounting member 111. The support base 120 is rotatably connected to the other end of the first linkage member 112. The rotation drive component 130 is disposed on the support base 120, and the transmission assembly 140 is rotatably connected to the support base 120. The rotation drive component 130 is connected to the transmission assembly 140 and is used to drive the transmission assembly 140 to rotate. The locking assembly 150 is disposed on the support base 120 and is used to lock the other end of the second linkage member 113 and the transmission assembly 140 when a first signal is received, and to disengage from the other end of the second linkage member 113 and the transmission assembly 140 when a second signal is received. For example, the rotation drive 130 can be a servo motor or a rotary cylinder.

[0036] In the aforementioned tabletop mechanism 100, the first signal and the second signal respectively characterize the state of the motion device to which the tabletop mechanism 100 is located. The first signal corresponds to the normal state of the motion device to which the tabletop mechanism 100 is located, while the second signal corresponds to the emergency state such as collision or emergency braking of the motion device to which the tabletop mechanism 100 is located. When the locking component 150 receives the first signal, it locks the other end of the second linkage 113 and the transmission component 140. The transmission component 140 is driven to rotate by the rotation drive component 130, so that the transmission component 140 drives the second linkage 113 to rotate relative to the mounting component 111 through the locking component 150, thereby realizing the rotation of the support seat 120. When the locking component 150 receives the second signal, it disengages from the other end of the second linkage 113 and the transmission component 140, so that the support seat 120 is in a vertical state, thereby realizing the collapse of the tabletop mechanism 100.

[0037] Therefore, when the moving device containing the table mechanism 100 experiences an emergency, the locking assembly 150 disengages from the second linkage 113 and the transmission assembly 140 to achieve the collapse of the table mechanism 100, thus preventing injury to passengers and improving safety. Furthermore, when the moving device containing the table mechanism 100 is in a normal state, the rotation drive 130 drives the transmission assembly 140 to rotate, causing the transmission assembly 140 to rotate relative to the mounting member 111 via the locking assembly 150, thereby adjusting the angle of the support seat 120.

[0038] Among them, the connection point between the first linkage 112 and the support 120, the connection point between the first linkage 112 and the mounting 111, and the connection point between the second linkage 113 and the locking assembly 150 are collinear.

[0039] Therefore, the above-mentioned arrangement can improve the stability of the bearing seat 120 rotating relative to the mounting part 111.

[0040] Please see Figure 2 and Figure 3 In some embodiments, the locking assembly 150 includes a linear drive 151 and a locking member 152. The linear drive 151 is disposed on the support 120 and connected to the locking member 152. Upon receiving a first signal, the linear drive 151 drives the locking member 152 to engage with the other end of the second linkage 113 and the transmission assembly 140, and upon receiving a second signal, drives the locking member 152 to disengage from the other end of the second linkage 113 and the transmission assembly 140. Exemplarily, the linear drive 151 can be a telescopic cylinder or a solenoid valve.

[0041] Therefore, locking of the second linkage 113 and the transmission assembly 140 is achieved through linear drive, which has a simple structure and low manufacturing cost.

[0042] Please see Figure 2 and Figure 3 In some embodiments, the locking member 152 includes a telescopic body 1521 and a retaining body 1522. One end of the telescopic body 1521 is connected to the linear drive member 151 to extend and retract relative to the linear drive member 151 under the drive of the linear drive member 151. The retaining body 1522 is connected to the other end of the telescopic body 1521 and is used to retain the other end of the second linkage member 113 and the transmission assembly 140.

[0043] Therefore, the telescopic body 1521 drives the retaining body 1522 to extend and retract under the drive of the linear drive 151, which can reduce the space occupied by the locking member 152 during movement and is conducive to the miniaturization of the locking assembly 150.

[0044] In this embodiment, the telescopic body 1521 is generally cylindrical, and the retaining body 1522 is generally cuboid. Specifically, the second linkage 113 has a square through hole at the end away from the mounting member 111. The square through hole is adapted to the retaining body 1522 and allows the retaining body 1522 to pass through, so that the second linkage 113 and the locking member 152 form a retaining engagement through the square through hole, thereby realizing the synchronous rotation of the second linkage 113 and the locking member 152.

[0045] Please see Figure 3 and Figure 4 In some embodiments, the transmission assembly 140 includes a transmission member 141 and a turbine 142. The transmission member 141 is connected to the rotation drive member 130, and the turbine 142 is rotatably connected to the support 120 and meshes with the transmission member 141 to rotate under the drive of the transmission member 141. A locking member 152 engages with the turbine 142.

[0046] Therefore, the rotation of the transmission assembly 140 is achieved by the meshing of the transmission component 141 with the turbine 142, which helps to improve the stability of the rotation of the transmission assembly 140.

[0047] In this embodiment, a square groove is provided at one end of the turbine 142 facing the linear drive member 151. The square groove is adapted to the retaining body 1522 of the locking member 152 and allows the retaining body 1522 to be inserted, so that the turbine 142 forms a retaining engagement with the locking member 152 through the directional groove, thereby realizing the synchronous rotation of the turbine 142 and the locking member 152.

[0048] Please see Figure 4 In some embodiments, the second linkage 113 is located between the turbine 142 and the linear drive 151, the turbine 142 is located between the second linkage 113 and the rotary drive 130, and the locking member 152 passes through the second linkage 113 and is inserted into the turbine 142.

[0049] Therefore, by rationally arranging the relative positions of the second linkage 113, the turbine 142 and the linear drive 151, it is beneficial to achieve a miniaturized table mechanism 100.

[0050] In some embodiments, the transmission member 141 includes a transmission rod 1411 and a worm gear 1412. The transmission rod 1411 is rotatably connected to the support 120, one end of the transmission rod 1411 is connected to the rotation drive member 130, and the worm gear 1412 is rotatably connected to the support 120 and meshes with the other end of the transmission rod 1411 and the worm gear 142 respectively, and the rotation axis of the worm gear 1412 is perpendicular to the rotation axis of the transmission rod 1411.

[0051] Therefore, the meshing of the worm gear 1412 and the transmission rod 1411 can buffer the power output of the rotating drive component 130, which is beneficial to improving the stability of the turbine 142 rotation.

[0052] Please see Figure 2 In some embodiments, there are two sets of mounting components 110, transmission components 140, and locking components 150. The two sets of mounting components 110, transmission components 140, and locking components 150 are respectively arranged in a one-to-one correspondence. The two sets of transmission components 140 are located on opposite sides of the rotation drive member 130 and between the two sets of mounting components 110. Each set of locking components 150 is located on the side of the corresponding mounting component 110 away from the transmission component 140.

[0053] Therefore, through the above arrangement, the load-bearing seat 120 can be subjected to force from two positions, so that the load-bearing seat 120 is subjected to force evenly, thereby improving the stability of the rotation of the load-bearing seat 120.

[0054] In this embodiment, the two sets of mounting components 110, the two sets of transmission components 140, and the two sets of locking components 150 are symmetrically arranged with respect to the rotation drive component 130.

[0055] Please see Figure 1 and Figure 2 In some embodiments, the support 120 includes a main frame 121 and a cover 122. The main frame 121 carries the rotation drive 130 and the linear drive 151, and is rotatably connected to the transmission assembly 140, the first linkage 112 and the second linkage 113, respectively. The cover 122 is sleeved on the main frame 121 and houses the rotation drive 130, the transmission assembly 140 and the locking assembly 150.

[0056] Therefore, the cover 122 accommodates the rotation drive 130, transmission assembly 140, and locking assembly 150, preventing external components from colliding with them and thus extending their service life. Furthermore, the cover 122 and the main frame 121 form a sleeve structure, with the rotation drive 130, transmission assembly 140, and locking assembly 150 housed within the cover 122, improving the aesthetics of the tabletop mechanism 100.

[0057] Please see Figure 1 In this embodiment, the cover 122 includes an upper plate 1221, a lower plate 1222, and a decorative strip 1223. The upper plate 1221 and the lower plate 1222 are detachably connected to opposite sides of the main frame 121. The rotation drive 130, the transmission assembly 140, and the locking assembly 150 are all disposed between the upper plate 1221 and the lower plate 1222. The decorative strip 1223 connects the upper plate 1221 and the lower plate 1222 and is disposed on opposite sides of the main frame 121 along with the mounting member 111.

[0058] Please see Figure 1 In some embodiments, the cover member 122 has a limiting groove 122a, which accommodates one end of the first linkage member 112 away from the mounting member 111 and one end of the second linkage member 113 away from the mounting member 111.

[0059] Therefore, the limiting groove 122a can limit the first linkage 112 and the second linkage 113, and prevent the first linkage 112 and the second linkage 113 from shaking during rotation.

[0060] This application embodiment also provides a seat, including a frame and a table mechanism 100 as described above, wherein the mounting component 111 of the table mechanism 100 is mounted on the frame.

[0061] When the motion device of the seat experiences emergency braking, the locking component 150 of the table mechanism 100 disengages from the second linkage 113 and the transmission component 140 to achieve the collapse of the table mechanism 100, thus preventing injury to the passenger and improving safety. Furthermore, when the motion device of the seat is in normal operation, the rotation drive component 130 of the table mechanism 100 drives the transmission component 140 to rotate, causing the transmission component 140 to rotate relative to the mounting component 111 via the locking component 150, thereby adjusting the angle of the support seat 120.

[0062] This application also provides a motion device, including the seat described in the above embodiments. The motion device can be a gasoline-powered vehicle, an electric vehicle, a tram, an airplane, etc.

[0063] When the aforementioned motion device undergoes emergency braking, the table mechanism 100 installed in the motion device can collapse via the locking assembly 150, preventing injury to passengers and thus improving safety. Furthermore, when the motion device is in normal operation, the table mechanism 100 installed in the motion device can drive the transmission assembly 140 to rotate via the rotation drive member 130. This causes the transmission assembly 140 to rotate relative to the mounting member 111 via the locking assembly 150, thereby adjusting the angle of the support seat 120.

[0064] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be embraced within this application.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.

Claims

1. A tabletop mechanism, characterized in that, include: The mounting assembly includes a mounting component, a first linkage component, and a second linkage component, wherein one end of the first linkage component is rotatably connected to the mounting component, and one end of the second linkage component is rotatably connected to the mounting component. The support base is rotatably connected to the other end of the first linkage component; A rotation drive component is mounted on the support base; A transmission assembly is rotatably connected to the support base, and a rotation drive is connected to the transmission assembly for driving the transmission assembly to rotate; A locking component, disposed on the support, is used to lock the other end of the second linkage member and the transmission component when a first signal is received, and to disengage from the other end of the second linkage member and the transmission component when a second signal is received.

2. The tabletop mechanism as described in claim 1, characterized in that, The connection points of the first linkage member and the bearing seat, the connection points of the first linkage member and the mounting member, and the connection points of the second linkage member and the locking assembly are collinear.

3. The tabletop mechanism as described in claim 1, characterized in that, The locking component includes: A linear drive element is disposed on the bearing seat; A locking element, connected to the linear drive element; The linear drive is used to drive the locking member to engage with the other end of the second linkage member and the transmission assembly when a first signal is received, and to drive the locking member to disengage from the other end of the second linkage member and the transmission assembly when a second signal is received.

4. The tabletop mechanism as described in claim 3, characterized in that, The locking element includes: A telescopic body, one end of which is connected to the linear drive member, so as to extend or retract relative to the linear drive member under the drive of the linear drive member; The retaining body is connected to the other end of the telescopic body and is used to retain the other end of the second linkage member and the transmission assembly.

5. The tabletop mechanism as described in claim 3, characterized in that, The transmission assembly includes: The transmission component is connected to the rotation drive component; The turbine is rotatably connected to the bearing and meshes with the transmission component to rotate under the drive of the transmission component; The locking element engages with the turbine clamp.

6. The tabletop mechanism as described in claim 5, characterized in that, The second linkage is located between the turbine and the linear drive, the turbine is located between the second linkage and the rotary drive, and the locking member passes through the second linkage and is inserted into the turbine.

7. The tabletop mechanism as described in claim 5, characterized in that, The transmission component includes: A transmission rod is rotatably connected to the bearing seat, and one end of the transmission rod is connected to the rotation drive component; The worm gear is rotatably connected to the bearing seat and meshes with the other end of the transmission rod and the turbine, respectively, and the rotation axis of the worm gear is perpendicular to the rotation axis of the transmission rod.

8. The tabletop mechanism as described in claim 1, characterized in that, The mounting assembly, the transmission assembly, and the locking assembly are all in two sets. The two sets of mounting assemblies, the two sets of transmission assemblies, and the two sets of locking assemblies are respectively arranged in a one-to-one correspondence. The two sets of transmission assemblies are located on opposite sides of the rotation drive member and between the two sets of mounting assemblies. Each set of locking assemblies is located on the side of the corresponding mounting assembly that is away from the transmission assembly.

9. The tabletop mechanism as described in claim 1, characterized in that, The support includes: The main frame supports the rotation drive component and the locking assembly, and is rotatably connected to the transmission assembly, the first linkage component and the second linkage component respectively; A cover is fitted onto the main frame and houses the rotation drive, the transmission assembly, and the locking assembly.

10. The tabletop mechanism as described in claim 9, characterized in that, The cover has a limiting groove, which accommodates the end of the first linkage member away from the mounting member and the end of the second linkage member away from the mounting member.

11. A type of seat, characterized in that, include: skeleton; The tabletop mechanism as described in any one of claims 1 to 10, wherein the mounting member of the tabletop mechanism is mounted on the frame.

12. A motion device, characterized in that, include: The seat as described in claim 11.