Spliced rotary seat

Abstract

The utility model discloses a splicing rotary type seat, including seat plate, splicing mechanism, support rod, rotating mechanism, angle adjusting mechanism and backboard, the splicing mechanism is movably arranged at the bottom of seat plate and is used for splicing adjacent seat, the support rod is arranged at the bottom of seat plate, one end of rotating mechanism is connected with seat plate, the other end of rotating mechanism is connected with angle adjusting mechanism, and the angle adjusting mechanism is used for adjusting the angle of angle adjusting mechanism. One end of the rotating rod is connected with the seat plate, the other end of the rotating rod is connected with the supporting rod to drive the seat plate to rotate, the angle adjusting mechanism is arranged on the side edge of the seat plate, and the backrest plate is movably connected with the angle adjusting mechanism. According to the chair, splicing can be rapidly completed only by inserting the rotating rod into the first fixing block of another chair, and by arranging the angle adjusting mechanism, the angle of the backrest plate can be conveniently adjusted through cooperation of the first connecting block, the second fixing block, the second connecting block, the inserting mechanism and the second fixing rod.

Description

Technical Field

[0001] This utility model belongs to the field of seating technology, specifically relating to a modular rotating seat. Background Technology

[0002] A chair is a piece of furniture or device for people to sit on, consisting of a seat, backrest, and support structure. It is used in various scenarios such as homes, offices, transportation, and public places. By studying human sitting posture, spinal curves, and pressure distribution, the size, shape, and support structure of chairs can be optimized to reduce fatigue from prolonged sitting and lower the risk of injury to the lumbar and cervical spine.

[0003] The modular rotating chair for group discussions in ideological and political education classes is a functional chair designed specifically for classroom group discussion scenarios. It is suitable for teaching scenarios such as ideological and political education classes that require high-frequency interaction and group collaboration. The individual chairs can be quickly assembled through the connection of buckles, magnets, or sliding rails, making it convenient for students to flexibly adjust the group formation according to the discussion topic.

[0004] When using clips, frequent splicing and disassembly can lead to weak connections. Even slight collisions during discussions can cause them to fall apart, affecting the continuity of teamwork. Existing technology uses metal clips driven by springs built into the end of the slide. When spliced ​​in place, they click to lock and require pressing an unlock button to separate. However, in actual use, when using springs, the springs can bend when the seat is pulled by external force, reducing their lifespan and causing them to loosen, thus reducing their stability.

[0005] Chinese patent application number 202421968070.1 discloses a multi-angle self-locking swivel office chair, including a seat and a backrest. The seat has a pneumatic lifting rod at its bottom, a movable base at its bottom, casters on the outer side of the movable base, and a height-adjustable support foot at the center of its bottom. A backrest adjustment device is provided between the backrest and the seat, including an adjustment seat and an adjustment rod. The adjustment seat is fixed to one side of the bottom of the seat, has a cavity inside, and a vertically oriented adjustment hole is formed between the upper and lower parts of the cavity. The adjustment rod moves linearly about the adjustment hole. A rack is provided on the side of the adjustment rod, and a gear is rotatably mounted inside the cavity of the adjustment seat, meshing with the rack. While this patent provides angle adjustment and self-locking functions, it cannot accommodate the splicing of multiple chairs, therefore, improvements are needed. Utility Model Content

[0006] The purpose of this utility model is to provide a modular rotating seat. The technical problem to be solved is that existing seats are not convenient for splicing multiple seats in a row and for individual backrest angle adjustment.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] This utility model provides a modular rotating seat, including a seat panel, a splicing mechanism, a support rod, a rotating mechanism, an angle adjustment mechanism, and a backrest panel. The splicing mechanism is movably disposed at the bottom of the seat panel for splicing adjacent seats. The support rod is disposed at the bottom of the seat panel to support the whole. One end of the rotating mechanism is connected to the seat panel, and the other end is connected to the support rod to drive the seat panel to rotate. The angle adjustment mechanism is disposed on the side of the seat panel, and the backrest panel is movably connected to the angle adjustment mechanism.

[0009] By incorporating a first fixed rod, a rotating rod, and a first fixed block, the splicing of adjacent seats becomes simple. Simply insert the rotating rod into the first fixed block of the other seat to quickly complete the splicing. The number and arrangement of seats can be flexibly combined according to actual needs, making it suitable for various occasions such as conference rooms and cinemas where flexible seating arrangements are required. The angle adjustment mechanism, through the cooperation of the first connecting block, second fixed block, second connecting block, insertion mechanism, and second fixed rod, allows for easy adjustment of the backrest angle. Users can adjust the backrest to a suitable tilt angle according to their comfort needs, meeting the usage requirements of different users in different scenarios such as rest, watching movies, and meetings.

[0010] Optionally, the splicing mechanism includes a first fixed rod, a rotating rod, and a first fixed block. The first fixed rod is located at the bottom of the seat panel near the side. The rotating rod is movably sleeved on the first fixed rod. The first fixed block is located on the bottom of the seat panel opposite to the first fixed rod. The first fixed block has a groove that matches the diameter of the rotating rod. During splicing, multiple seats are placed in a row, and the rotating rod between adjacent seats is inserted into the first fixed block on another seat. By creating a groove in the first fixed block that matches the diameter of the rotating rod, the two fit tightly together after the rotating rod is inserted into the groove, effectively limiting the relative movement between the seats in the horizontal direction. This tight insertion and engagement method provides a stable connection structure for the spliced ​​seats, making the overall spliced ​​seats more stable and less prone to separation or shaking due to personnel movement or external forces during use, ensuring safety and reliability.

[0011] Optionally, the splicing mechanism further includes a pair of telescopic sleeves and a pair of first springs. The pair of telescopic sleeves are movably disposed on both sides of the end of the rotating rod, and the pair of first springs are correspondingly sleeved on the telescopic sleeves. A circular hole is provided through the groove inside the first fixing block, facing both ends, and the circular hole is adapted to the telescopic sleeve. By setting the telescopic sleeves and first springs, when adjacent seats are spliced ​​by inserting them into the first fixing block via the rotating rod, the telescopic sleeves automatically extend under the action of the first springs and insert into the circular holes of the first fixing block. This makes the connection between the rotating rod and the first fixing block tighter, reducing gaps and looseness at the splicing point, effectively enhancing the connection stability between adjacent seats, and preventing the seats from separating at the splicing point due to personnel movement or external impact during use.

[0012] Optionally, the splicing mechanism further includes an extrusion column, a limiting sleeve, and a limiting roller. The extrusion column is slidably inserted into the circular hole, the limiting sleeve is disposed at the end of the first fixed block, and the limiting roller is disposed on the outer periphery of the extrusion column and slidably connected to the limiting sleeve. By disposing the limiting roller on the outer periphery of the extrusion column and slidably connecting it to the limiting sleeve, the limiting sleeve restricts the sliding stroke of the limiting roller, thereby precisely controlling the sliding range of the extrusion column.

[0013] Optionally, the modular rotating seat also includes a limiting post, a pull ring, and a second spring. The limiting post is movably inserted into the seat panel near the side and extends through the seat panel to the bottom. The pull ring is located at the end of the limiting post. The second spring is sleeved on the outer periphery of the limiting post to limit its vertical movement. By setting a limiting post on the side of the seat panel, the rotation direction of the rotating rod is restricted.

[0014] Optionally, the angle adjustment mechanism includes a first connecting block, a second fixing block, a second connecting block, a plug-in mechanism, and a second fixing rod. The first connecting block is disposed on the side of the seat panel, the second fixing block is disposed on the side of the first connecting block and is flush with the height of the first connecting block, the second connecting block is disposed on the top of the first connecting block, the second fixing rod is movably plugged through the second connecting block, the backrest panel is connected to the second fixing rod, and the plug-in mechanism is disposed on the second fixing block and plugged into the second fixing rod (10). By changing the different plug-in positions of the plug-in mechanism on the second fixing rod, the position of the second fixing rod can be changed, thereby adjusting the angle of the backrest panel. Users can adjust the backrest to a suitable tilt degree according to their own comfort needs, such as sitting or lying posture, to improve the comfort of riding.

[0015] Optionally, the insertion mechanism includes a fixed sleeve and a locking block. The fixed sleeve is annular and is fixed to the top of the second fixed block from the side. The end of the second fixed rod is inserted into the fixed sleeve. The locking block passes through the second fixed rod and is inserted into the outer circumference of the fixed sleeve. The second fixed rod has several slots around its circumference for the locking block to be inserted. By having several slots around the second fixed rod for the locking block to be inserted, and the locking block passing through the second fixed rod and being inserted into different slots on the outer circumference of the fixed sleeve, the position of the second fixed rod can be precisely locked, thereby accurately determining the angle of the backrest.

[0016] Optionally, the rotating mechanism includes a rotating sleeve, a connecting rod, a limiting plate, and rollers. The rotating sleeve is fixed to the top of the support rod, and the connecting rod is movably sleeved in the rotating sleeve. The connecting rod is provided with an annular groove. There are several limiting plates, which are spaced apart in the annular groove. The rollers are correspondingly spaced in the annular groove. By correspondingly spaced the rollers in the annular groove, the rolling of the rollers can reduce the friction between the connecting rod and the rotating sleeve, making the rotation smoother.

[0017] Optionally, the rotating mechanism includes a bolt, the bolt thread passing through the rotating sleeve and abutting against the connecting rod. By setting the bolt, the connecting rod is fixed at its current height through the bolt thread abutting against the connecting rod.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] 1. This utility model's modular rotating seat simplifies the assembly of adjacent seats by incorporating a first fixed rod, a rotating rod, and a first fixed block. Simply insert the rotating rod into the first fixed block of the other seat to quickly complete the assembly. The number and arrangement of seats can be flexibly combined according to actual needs, making it suitable for various occasions such as conference rooms and cinemas where flexible seating arrangements are required. The angle adjustment mechanism, consisting of a first connecting block, a second fixed block, a second connecting block, an insertion mechanism, and a second fixed rod, allows for easy adjustment of the backrest angle. Users can adjust the backrest to a suitable tilt angle according to their comfort needs, meeting the usage requirements of different users in various scenarios such as rest, watching movies, and meetings.

[0020] 2. The modular rotating seat of this invention features a telescopic sleeve and a first spring. When adjacent seats are joined together by inserting a rotating rod into a first fixed block, the telescopic sleeve automatically extends under the action of the first spring and inserts into the round hole of the first fixed block. This makes the connection between the rotating rod and the first fixed block tighter, reducing gaps and looseness at the joint, effectively enhancing the stability of the connection between adjacent seats, and preventing the seats from separating at the joint due to personnel movement or external impact during use.

[0021] 3. The modular rotating seat of this utility model has several slots for inserting locking blocks around the circumference of the second fixed rod. After the locking blocks pass through the second fixed rod, they are inserted into different slots on the outer circumference of the fixed sleeve, which can accurately lock the position of the second fixed rod and thus accurately determine the angle of the backrest. By setting the rollers at corresponding intervals in the annular groove, the rolling of the rollers can reduce the friction between the connecting rod and the rotating sleeve, making the rotation smoother. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the rear structure of this utility model;

[0024] Figure 3 This is a partial exploded view of the splicing mechanism of this utility model;

[0025] Figure 4 This is an enlarged schematic diagram of the extrusion column structure of this utility model;

[0026] Figure 5 This is a partial exploded view of the rotating mechanism of this utility model;

[0027] Figure 6 This is a schematic diagram of the angle adjustment mechanism of this utility model.

[0028] Figure 7 For the present utility model Figure 6 Enlarged schematic diagram of the structure circled in the middle;

[0029] Figure 8 This is a schematic diagram of the connection of the limiting post structure of this utility model.

[0030] In the diagram: 1-Seat panel, 2-Assembly mechanism, 201-First fixing rod, 202-Rotating rod, 203-Telescopic sleeve, 204-First spring, 205-First fixing block, 206-Round hole, 207-Extrusion column, 3-Support rod, 4-Rotating mechanism, 401-Rotating sleeve, 402-Connecting rod, 403-Annular groove, 404-Limiting plate, 405-Roller, 5-First connecting block, 6-Second fixing block, 7-Fixing sleeve, 8-Second connecting block, 9-Backrest panel, 10-Second fixing rod, 11-Slot, 12-Slot block, 13-Through hole, 14-Second spring, 15-Limiting column, 16-Round plate, 17-Pull ring, 18-Limiting sleeve, 19-Sliding groove, 20-Limiting roller, 21-Slide bar, 22-Threaded hole, 23-Bolt, 24-Backrest cushion, 25-Hose. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0032] One embodiment, such as Figures 1 to 8 As shown, a modular rotating seat is provided, including a seat panel 1, a splicing mechanism 2, a support rod 3, a rotating mechanism 4, an angle adjustment mechanism, a backrest panel 9, and a limiting mechanism. The splicing mechanism 2 is movably installed at the bottom of the seat panel 1, the support rod 3 is supported at the bottom of the seat panel 1, one end of the rotating mechanism 4 is connected to the support rod 3, and the other end is connected to the seat panel 1. The angle adjustment mechanism is installed on the side of the seat panel 1, and the backrest panel 9 is hinged to the angle adjustment mechanism. In this embodiment, the limiting mechanism is installed on the side of the seat panel 1 near the splicing mechanism 2.

[0033] In use, the angle between the backrest 9 and the seat 1 is adjusted by the angle adjustment mechanism, and the extension splicing mechanism 2 is adjusted by the adjustment limiting mechanism. When multiple seats need to be spliced, the seats are adjusted to the required direction by the rotation mechanism 4, and the splicing mechanisms 2 of the two adjacent seats are inserted to form a whole. It should be noted that in this embodiment, the bottom of the support rod 3 is connected to multiple universal wheels in the prior art, which facilitates flexible transformation in multiple directions when moving.

[0034] refer to Figure 2 and Figure 3 As shown, in this embodiment, the splicing mechanism 2 includes a first fixed rod 201 welded to the bottom of the seat plate 1, wherein the first fixed rod 201 is movably sleeved with a rotating rod 202. In this embodiment, the rotating rod 202 is preferably rectangular, and one end is movably sleeved on the first fixed rod 201. Holes are provided on both sides of the end of the rotating rod 202, and telescopic sleeves 203 with matching diameters are movably filled in both holes. In the normal state, one end of the telescopic sleeve 203 is located outside the hole at the end of the rotating rod 202, and the other end is located inside the hole. Each telescopic sleeve 203 is sleeved with a first spring 204 on its outer periphery. One end of each first spring 204 is fixed to the outer periphery of the hole at the end of the rotating rod 202, and the other end is fixed to the end of the telescopic sleeve 203.

[0035] In this embodiment, the first fixing rod 201 is preferably fixed at the bottom of the seat plate 1 near the side. The opposite side of the bottom of the seat plate 1 is fixed with a first fixing block 205. The first fixing block 205 has a slot on its side, the diameter of which is larger than the diameter of the rotating rod 202. The first fixing block 205 has two pairs of circular holes 206 perpendicular to the slot, which are connected to the slot. Each circular hole 206 is slidably connected with a matching extrusion column 207. In this embodiment, a pair of limiting sleeves 18 are fixed on the outer periphery of each circular hole 206. The extrusion column 207 is fixed with a limiting roller 20 that matches the limiting sleeve 18. In order to increase the stability of the sliding of the extrusion column 207, four sliding strips 21 are fixed in an array on the outer periphery of each limiting roller 20. Each limiting sleeve 18 has a corresponding sliding groove 19.

[0036] In use, when multiple seats need to be joined in a row, the rotating rod 202 at the bottom of the seat is opened and rotated. The first spring 204 at the end of the rotating rod 202 is pressed, and the rotating rod 202 is inserted into the groove of the first fixing block 205 at the bottom of another adjacent seat. Under the action of the groove, the first spring 204 drives the compression telescopic sleeve 203 to the inside of the rotating rod 202. When the rotating rod 202 moves into the inside of the first fixing block 205, the first spring 204 drives the telescopic sleeve 203 to release and extend into the round hole 206. At this time, the extrusion column 207 located in the round hole 206 slides outward under the action of the limiting sleeve 18 and the limiting roller 20. At the same time, the extrusion column 207 will not fall to the outside. At this time, the joining of the seats is completed. When disassembly is required, simply press the extrusion column 207. At this time, the first spring 204 drives the telescopic sleeve 203 to return to the inside of the rotating rod 202, and the rotating rod 202 can be pulled out from the first fixing block 205 of the adjacent joined seats.

[0037] refer to Figure 1 , Figure 2 and Figure 8 As shown, in this embodiment, in order to increase the limiting of the rotating rod 202, a through hole 13 is provided on the side of the seat plate 1 near the rotating rod 202. A limiting post 15 is movably arranged in the through hole 13. The limiting post 15 passes through the through hole 13 and extends through the seat plate 1 to the bottom. A second spring 14 is fixed at the bottom of the seat plate 1. The second spring 14 sleeves the limiting post 15 inside and fixes its end to the end of the limiting post 15. In this embodiment, a circular plate 16 is fixed at the top of the seat plate 1, and the diameter of the circular plate 16 is slightly larger than the diameter of the through hole 13. A pull ring 17 is also fixed at the top of the circular plate 16.

[0038] In use, the height of the limiting post 15 is slightly higher than the thickness of the rotating rod 202, limiting the rotation of the rotating rod 202 in the outward direction. At this time, by pulling the pull ring 17, the limiting post 15 compresses the second spring 14 and moves along the through hole 13 toward the top of the seat plate 1 until the rotating rod 202 can rotate in the outward direction. When the rotating rod 202 rotates to the required position, the pull ring 17 is released, and it returns to its original position under the action of the second spring 14. The operation is the same when the rotating rod 202 needs to be retracted, which will not be described in detail here.

[0039] refer to Figure 2 and Figure 5 As shown, in this embodiment, the rotating mechanism 4 includes a rotating sleeve 401, wherein the bottom of the rotating sleeve 401 is fixed to the top of the support rod 3, wherein a connecting rod 402 is movably sleeved in the rotating sleeve 401, wherein an annular groove 403 is provided on the connecting rod 402, wherein a plurality of limiting plates 404 are provided at intervals in the annular groove 403, wherein the limiting plates 404 do not exceed the outer circumference of the connecting rod 402 in the axial direction, wherein rollers 405 are embedded on both sides of each limiting plate 404 in the annular groove 403, wherein the connecting rod 402 is inserted into the rotating sleeve 401 and rotates under the action of the rollers 405.

[0040] refer to Figure 5 As shown, in this embodiment, the rotating sleeve 401 is provided with a threaded hole 22. The threaded hole 22 is preferably located in the vertical direction opposite to the connecting rod 402. The threaded hole 22 is threaded with a bolt 23, which is inserted into the rotating sleeve 401 through the threaded hole 22 and abuts against the connecting rod 402.

[0041] When in use, when it is necessary to adjust the direction of the current seat plate 1, the tightness of the contact with the connecting rod 402 is adjusted by rotating the bolt 23. The connecting rod 402 is rotated, and under the action of the roller 405, the connecting rod 402 rotates inside the rotating sleeve 401. After adjusting to a suitable angle, the bolt 23 is tightened until it contacts the connecting rod 402.

[0042] refer to Figure 1 , Figure 6 and Figure 7 As shown, in this embodiment, the angle adjustment mechanism includes a first connecting block 5, which is fixed to the side of the seat plate 1. A second fixing block 6 is fixed to the side of the first connecting block 5, and the height of the second fixing block 6 is adapted to the first connecting block 5. A second connecting block 8 is also fixed to the top of the first connecting block 5. A hole is opened through the second connecting block 8, and a second fixing rod 10 is movably installed in the hole. A backrest plate 9 is fixed to the second fixing rod 10. A plug-in mechanism is also fixed to the second fixing block 6, and the plug-in mechanism is plugged into the second fixing rod 10 to achieve angle adjustment.

[0043] In this embodiment, the insertion mechanism includes a fixed sleeve 7 and a locking block 12. The fixed sleeve 7 is annular and is fixed to the top of the second fixed block 6 on the side. The end of the second fixed rod 10 is inserted into the fixed sleeve 7. The locking block 12 passes through the second fixed rod 10 and is inserted into the outer periphery of the fixed sleeve 7. The second fixed rod 10 has a plurality of locking slots 11 around its circumference for the locking block 12 to be inserted.

[0044] When adjusting the backrest angle of the seat, the card block 12 inserted into the card slot 11 and the fixing sleeve 7 is pulled out, and the second fixing rod 10 is rotated. Under the action of the second fixing rod 10 and the second connecting block 8, the backrest panel 9 rotates around the second connecting block 8 as the axis to achieve the backrest angle adjustment. After adjusting to the appropriate angle, the card block 12 is inserted into the card slot 11 and the fixing sleeve 7. In this embodiment, the front side of the backrest panel 9 is sewn with a high-density sponge backrest pad 24 that conforms to the human body curve. The surface layer is made of breathable mesh fabric, which effectively relieves fatigue from sitting for a long time. The flexible hose 25 installed on the top of the backrest panel 9 is made of flexible silicone material and filled with memory foam. It can absorb the impact force in the event of a collision and provide safety protection for the user's head.

[0045] Working principle: During use, the operator rotates the rotating rod 202 to the side of the seat plate 1. At this time, the telescopic sleeve 203 and the first spring 204 are in a ready-to-trigger state. The seat to be assembled is aligned with the side of another seat and inserted. The rotating rod 202 is inserted into the internal space of the first fixing block 205. As the rotating rod 202 goes deeper, the inner wall of the first fixing block 205 squeezes the first spring 204, causing it to compress and deform. The telescopic sleeve 203 retracts synchronously. When the rotating rod 202 is pushed to a specific position, the first spring 204 is aligned with the axis of the circular hole 206 on the first fixing block 205. 04. Relying on its own elastic potential energy, the telescopic sleeve 203 is precisely inserted into the round hole 206. When the seats need to be separated, the operator presses the squeezing column 207. The squeezing column 207 pushes the first spring 204, causing it to overcome the elastic potential energy and gradually retract into the rotating rod 202. The telescopic sleeve 203 simultaneously exits the round hole 206. When the first spring 204 is completely retracted into the rotating rod 202, the locking state is released, and the operator can easily pull out the rotating rod 202 to complete the separation of the two seats. This is suitable for various scenarios such as group discussions in ideological and political education classes and rapid adjustments to classroom layout.

[0046] Furthermore, when the connecting rod 402 is inserted into the rotating sleeve 401, the limiting plate 404 constrains the roller 405 within the annular groove 403, allowing it to roll freely while restricting axial displacement. When the seat rotates, the roller 405 rolls within the annular groove 403, converting sliding friction into rolling friction, significantly reducing resistance and making the seat rotate more smoothly and easily. When the seat is subjected to an upward pulling force, the roller 405 abuts against the edge of the annular groove 403, forming a mechanical block to prevent the connecting rod 402 from detaching from the rotating sleeve 401. The limiting plate 404 constrains the roller 405, ensuring that it always runs within the track and avoiding detachment and failure. This balances rotational flexibility with connection reliability, effectively meeting the needs of frequent rotation and safe and stable use of ideological and political education desks and chairs.

[0047] The embodiments of the present utility model have been described above with reference to the accompanying drawings. However, the present utility model is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of the present utility model without departing from the spirit and scope of the claims. All of these forms are within the protection scope of the present utility model.

Claims

1. A spliced swivel chair, characterized by: The system includes a seat panel (1), a splicing mechanism (2), a support rod (3), a rotating mechanism (4), an angle adjustment mechanism, and a backrest panel (9). The splicing mechanism (2) is movably disposed at the bottom of the seat panel (1) for splicing adjacent seats. The support rod (3) is disposed at the bottom of the seat panel (1) to support the whole. One end of the rotating mechanism (4) is connected to the seat panel (1), and the other end is connected to the support rod (3) to drive the seat panel (1) to rotate. The angle adjustment mechanism is disposed on the side of the seat panel (1), and the backrest panel (9) is movably connected to the angle adjustment mechanism. The splicing mechanism (2) includes a first fixed rod (201), a rotating rod (202), a first fixed block (205), a pair of telescopic sleeves (203), a pair of first springs (204), a pressing column (207), a limiting sleeve (18), and a limiting roller (20). The first fixed rod (201) is located at the bottom of the seat plate (1) near the side. The rotating rod (202) is movably sleeved on the first fixed rod (201). The first fixed block (205) is located on the seat plate (1). On the other side of the bottom opposite to the first fixed rod (201); a pair of telescopic sleeves (203) are movably disposed on both sides of the end of the rotating rod (202), and a pair of first springs (204) are correspondingly sleeved on the telescopic sleeves (203); the extrusion column (207) is slidably inserted into the round hole (206), the limiting sleeve (18) is disposed at the end of the first fixed block (205), and the limiting roller (20) is disposed on the outer periphery of the extrusion column (207) and is slidably connected to the limiting sleeve (18).

2. A spliced rotary seat according to claim 1, wherein: The first fixing block (205) has a groove that matches the diameter of the rotating rod (202). When splicing, multiple seats are placed in a row, and the rotating rod (202) between adjacent beam seats is inserted into the first fixing block (205) on another seat.

3. A rotary seat as claimed in claim 2, wherein: The groove inside the first fixing block (205) is provided with round holes (206) through both ends, wherein the round holes (206) are adapted to the telescopic sleeve (203).

4. A spliced rotary seat according to claim 3, wherein: The modular rotating seat also includes a limiting post (15), a pull ring (17), and a second spring (14). The limiting post (15) is movably inserted into the seat plate (1) near the side and extends through the seat plate (1) to the bottom. The pull ring (17) is located at the end of the limiting post (15). The second spring (14) is sleeved on the outer periphery of the limiting post (15) to limit the upper and lower movement of the limiting post (15).

5. The swivel chair of claim 1, wherein: The angle adjustment mechanism includes a first connecting block (5), a second fixing block (6), a second connecting block (8), a plug-in mechanism, and a second fixing rod (10). The first connecting block (5) is located on the side of the seat plate (1). The second fixing block (6) is located on the side of the first connecting block (5) and is flush with the height of the first connecting block (5). The second connecting block (8) is located on the top of the first connecting block (5). The second fixing rod (10) is movably plugged through the second connecting block (8). The backrest plate (9) is connected to the second fixing rod (10). The plug-in mechanism is located on the second fixing block (6) and plugged into the second fixing rod (10). ​ 6. A rotary seat as claimed in claim 5, wherein: The insertion mechanism includes a fixed sleeve (7) and a locking block (12). The fixed sleeve (7) is annular and is fixed to the top of the second fixed block (6) on the side. The end of the second fixed rod (10) is inserted into the fixed sleeve (7). The locking block (12) passes through the second fixed rod (10) and is inserted into the outer circumference of the fixed sleeve (7). The second fixed rod (10) has a number of slots (11) for the locking block (12) to be inserted around its circumference.

7. The swivel chair of claim 1, wherein: The rotating mechanism (4) includes a rotating sleeve (401), a connecting rod (402), a limiting plate (404), and rollers (405). The rotating sleeve (401) is fixed to the top of the support rod (3). The connecting rod (402) is movably sleeved in the rotating sleeve (401). The connecting rod (402) is provided with an annular groove (403). There are several limiting plates (404) and they are spaced apart in the annular groove (403). The rollers (405) are correspondingly spaced apart in the annular groove (403).

8. A rotary seat as claimed in claim 7, wherein: The rotating mechanism (4) includes a bolt (23) whose thread passes through the rotating sleeve (401) and abuts against the connecting rod (402).

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