A single chair turntable assembly and chair

Abstract

This application discloses a single-chair turntable assembly and a chair, including a support device, a rotating device, and a mounting device. The support device has a first receiving portion with a first locking portion, and the mounting device has a second receiving portion with a second locking portion. The rotating device includes a rotating mechanism and a rotating bushing. The rotating bushing is fixedly sleeved on the outside of the rotating mechanism. The lower end of the rotating bushing has a tapered structure with an outer diameter increasing from bottom to top, and the lower end of the rotating bushing has a third locking portion that mates with the first locking portion. The rotating bushing is detachably mounted on the support device. The rotating mechanism has a rotating shaft. The upper end of the rotating shaft has a tapered structure with an outer diameter increasing from top to bottom, and the upper end of the rotating shaft has a fourth locking portion that mates with the second locking portion. The mounting device is detachably mounted on the rotating shaft. Through the interference tapered fit and locking structure between the rotating bushing and the support device, and between the rotating shaft and the mounting device, quick positioning and insertion can be achieved without tools, and the rotating device can also achieve an automatic reset function.

Description

Technical Field

[0001] This application relates to the field of furniture technology, and in particular to a single chair turntable assembly and a chair. Background Technology

[0002] With the development of modern furniture design, swivel chairs are widely used in various scenarios such as offices, leisure, and homes, and users have placed higher demands on their comfort, convenience, and structural stability. Especially in products such as sofas and single chairs, a swivel assembly is usually set at the bottom of the chair to enable the chair to rotate effectively.

[0003] The inventors of this case discovered that existing single-chair turntable assemblies typically include a support device, a mounting device, and a swivel device. These components are generally pre-assembled as a whole, requiring numerous fasteners (such as bolts) to secure them together. Therefore, manufacturers usually ship these pre-assembled assemblies as a single unit to avoid cumbersome assembly for customers. Understandably, this lack of rapid assembly capability in single-chair turntable assemblies leads to large packaging volume and high transportation costs. Utility Model Content

[0004] This application aims to solve at least one of the technical problems existing in the prior art. This application provides a single-chair turntable assembly and a chair that can improve assembly efficiency while achieving stable and reliable rotational support and return control.

[0005] The single-chair turntable assembly according to the first aspect of this application includes:

[0006] The support device is provided with a first receiving part, and the first receiving part is provided with a first locking part;

[0007] The mounting device is provided with a second receiving part, and the second receiving part is provided with a second locking part;

[0008] The rotary device is provided with a third locking part that is detachably engaged with the first locking part and a fourth locking part that is engaged with the second locking part; the rotary device is detachably connected to the support device and the rotary device is detachably connected to the mounting device.

[0009] The single-chair turntable assembly according to the embodiments of this application has at least the following beneficial effects:

[0010] The single chair turntable assembly of this application includes a support device, a rotating device, and a mounting device. The support device supports the rotating device and the mounting device, which are sequentially and detachably installed. The mounting device connects the single chair turntable assembly to the chair body. The rotating device drives the mounting device to rotate back to its initial position. The mounting device rotates relative to the support device via the rotating device, and after rotation, the mounting device automatically rotates back via the rotating device. In this application, the support device has a first receiving portion, within which a first locking portion is provided. The rotating device has a third locking portion, which is detachably engaged with the first locking portion, allowing the rotating device to be detachably connected to the support device. The mounting device has a second receiving portion, within which a second locking portion is provided. The rotating device also has a fourth locking portion, which is detachably engaged with the second locking portion, allowing the rotating device to be detachably connected to the mounting device. Thus, the single chair turntable assembly of this application, through the detachable locking structure between the rotating device and the support device, and between the rotating device and the mounting device, can achieve quick insertion and positioning without tools. Based on this, at the time of shipment, the support device, rotating device and mounting device do not need to be fixed together by many fasteners and shipped as an integrated unit. Instead, they can be packaged separately or separately in the same box. Obviously, this can effectively improve assembly efficiency and transportation packing density, and reduce logistics and labor costs.

[0011] According to some embodiments of this application, the rotary device includes a rotating shaft sleeve and a rotary mechanism. The rotating shaft sleeve is fixedly sleeved on the outside of the rotary mechanism. The rotary mechanism is used to drive the installation device to rotate. The rotary mechanism is provided with a rotating shaft. The rotating shaft sleeve is provided with a third locking part that is detachably connected to the first locking part. The rotating shaft is provided with a fourth locking part that is detachably connected to the second locking part.

[0012] According to some embodiments of this application, the lower end of the rotating bushing is a tapered structure with an outer diameter that gradually increases from bottom to top, and the third locking portion is disposed at the lower end of the rotating bushing; the first receiving portion forms a first hollow structure on the support device, and the first hollow structure is a tapered structure with an inner diameter that gradually increases from bottom to top; and / or

[0013] The upper end of the rotating shaft is a tapered structure with an outer diameter that gradually increases from top to bottom, and the fourth locking part is disposed at the upper end of the rotating shaft; the second receiving part forms a second hollow structure on the mounting device, and the second hollow structure is a tapered structure with an inner diameter that gradually increases from top to bottom.

[0014] According to some embodiments of this application, the first locking part is configured as a first positioning pin, the third locking part is configured as a first locking groove, one end of the rotating device extends into the first receiving part, and forms a connection with the support device through the cooperation of the first positioning pin and the first locking groove.

[0015] According to some embodiments of this application, the first slot has a downward-facing first opening for the first positioning pin to extend into the first slot, the first receiving portion forms a hollow structure on the support device, and the first positioning pin extends from the side wall of the hollow structure toward the center of the hollow structure.

[0016] According to some embodiments of this application, the second locking part is configured as a second locking groove, the fourth locking part is configured as a second positioning pin, and the end of the rotary device away from the first receiving part extends into the second receiving part, and forms a connection with the mounting device through the cooperation of the second positioning pin and the second locking groove.

[0017] According to some embodiments of this application, the second slot has a downward-facing second opening for the second positioning pin to extend into the second slot, the second receiving portion forms a hollow structure on the mounting device, and the second positioning pin extends from the outer side wall of the rotating shaft toward the outer side of the rotating shaft.

[0018] According to some embodiments of this application, the rotary mechanism further includes a first bearing, a first assembly, a second assembly, and an elastic component. A guide protrusion is provided on the side of the rotating shaft. The inner ring of the first bearing is fixedly connected to the outer circumferential surface of the rotating shaft. The outer ring of the first bearing is fixedly connected to the first assembly. The first assembly is fixedly connected to the rotating shaft sleeve. Both the first and second assemblies are sleeved on the rotating shaft. The second assembly is disposed between the first assembly and the guide protrusion. The first assembly has at least two first guide rails, and the second assembly has at least two second guide rails. A first mating portion is formed between the first guide rails, and the second guide rails are slidably disposed within the first mating portion. A second mating portion is formed between the second guide rails, and the first guide rails are slidably disposed within the second mating portion. The second assembly has a guide ring inclined surface that mates with the guide protrusion. The second assembly is configured to move closer to or further away from the first assembly when the rotating shaft drives the guide protrusion to rotate. The elastic component is sleeved on the outside of the first and second assemblies and located between them. The elastic component is configured to be compressed when the second assembly approaches the first assembly and to reset itself after the external force compressing it disappears.

[0019] According to some embodiments of this application, a portion of the rotating shaft is blocked on the upper side of the first kit and the first bearing, and a portion of the rotating shaft sleeve is blocked on the lower side of the first kit;

[0020] The rotating shaft has a first step, and the rotating shaft is fitted with a second step; the rotating mechanism also includes a shim, the shim is disposed between the first kit and the elastic component, and part of the shim is located between the second step and the first kit; the first step blocks the upper side of the first bearing and the first kit, and the second step blocks the lower side of the shim; the first step and the second step cooperate to clamp the shim, the first kit and the first bearing between the first step and the second step.

[0021] The chair according to a second aspect of this application includes the single chair turntable assembly described in any of the above embodiments. Attached Figure Description

[0022] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0023] Figure 1 This is a schematic diagram of the structure of a single chair turntable assembly according to an embodiment of this application;

[0024] Figure 2 This is a schematic diagram of the structure of a support device according to an embodiment of this application;

[0025] Figure 3 This is a schematic diagram of the structure of an installation device according to an embodiment of this application;

[0026] Figure 4 This is a schematic diagram of the structure of a rotary device according to an embodiment of this application;

[0027] Figure 5 This is a comparative schematic diagram of the rotary mechanism before and after assembly according to an embodiment of this application;

[0028] Figure 6 This is a schematic diagram of the structure of a rotating bushing according to an embodiment of this application;

[0029] Figure 7 for Figure 1 Another structural diagram;

[0030] Figure 8 for Figure 7 A schematic diagram of the cross section along line AA;

[0031] Figure 9 for Figure 7 Schematic diagram of cross section along line BB

[0032] Figure 10 for Figure 8 An enlarged schematic diagram of part I.

[0033] Figure label:

[0034] Support device 1; First receiving part 11; First positioning pin 12; Support leg 13; Anti-slip pad 131;

[0035] Rotary device 2; Rotary mechanism 21; Second positioning pin 211; Rotating shaft 212; Rolling part 213; Mounting pin 214; Guide protrusion 215; First step 216; Rotating shaft sleeve 22; First locking groove 221; Second step 222; First bearing 23; First assembly 24; First guide rail 241; First mating part 242; Second assembly 25; Second guide rail 251; Guide ring inclined surface 252; Second mating part 253; Elastic component 26; Second bearing 27; Gasket 28; Cover plate 29;

[0036] Mounting device 3; second locking groove 31; mounting part 32; through hole 321; second receiving part 33;

[0037] First locking part 41; Second locking part 42; Third locking part 43; Fourth locking part 44;

[0038] Single chair turntable assembly 10. Detailed Implementation

[0039] 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.

[0040] In the description of this application, it should be understood that the use of terms such as "center," "middle," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" to indicate orientation or positional relationships is based on the orientation or positional relationships shown in the accompanying drawings and is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0041] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0042] The following reference Figures 1 to 10 This application describes the single-chair turntable assembly 10 and the chair in an embodiment.

[0043] Example 1:

[0044] The single-chair turntable assembly 10 of this application includes:

[0045] Support device 1, the support device 1 has a first receiving part 11, the first receiving part 11 is provided with a first locking part 41;

[0046] The mounting device 3 is provided with a second receiving part 33, and the second receiving part 33 is provided with a second locking part 42;

[0047] The rotary device 2 is provided with a third locking part 43 that is detachably engaged with the first locking part 41, and a fourth locking part 44 that is engaged with the second locking part 42; the rotary device 2 is detachably connected to the support device 1, and the rotary device 2 is detachably connected to the mounting device 3.

[0048] As can be seen from the above, the single chair turntable assembly 10 of this application, through the detachable structure between the rotating device 2 and the support device 1, and between the rotating device 2 and the mounting device 3, can achieve quick insertion and positioning without tools. Based on this, at the time of shipment, the support device 1, the rotating device 2 and the mounting device 3 do not need to be fixed together by many fasteners and shipped in an integrated manner. Instead, they can be packaged separately or separately in the same box. Obviously, this can effectively improve assembly efficiency and transportation packing density, and reduce logistics and labor costs.

[0049] A more detailed design of the above scheme includes, for example:

[0050] according to Figure 1As shown, the single chair turntable assembly 10 includes a support device 1, a rotating device 2, and a mounting device 3. The support device 1 supports the rotating device 2 and the mounting device 3. The support device 1, the rotating device 2, and the mounting device 3 are detachably installed in sequence. The mounting device 3 is used to connect the single chair turntable assembly 10 to the chair body (not shown in the figure). The mounting device 3 can rotate relative to the support device 1 through the rotating device 2 and the chair body under the action of external force, and automatically rotate through the rotating device 2 after the external force disappears.

[0051] Please continue reading Figure 2 The support device 1 has a first receiving portion 11 in the middle, and a first locking portion 41 is provided inside the first receiving portion 11. Please continue to see Figure 3 The mounting device 3 has a second receiving part 33 in the middle, and a second locking part 42 is provided on the second receiving part 33. Please continue to see Figure 4 The rotary device 2 is provided with a third locking part 43 and a fourth locking part 44. The third locking part 43 is detachably engaged with the first locking part 41, so that the rotary device 2 is detachably connected with the support device 1; the fourth locking part 44 is detachably engaged with the second locking part 42, so that the rotary device 2 is detachably connected with the mounting device 3.

[0052] In some embodiments, such as Figure 3 As shown, the mounting device 3 is provided with several mounting parts 32, and the chair body (not shown in the figure) is connected to the mounting device 3 through the mounting parts 32. Specifically, the mounting part 32 is a through hole 321, and the mounting device 3 is connected to the chair body (not shown in the figure) by bolts engaging with the through hole 321. The through hole 321 can also be a threaded hole.

[0053] according to Figure 1 and Figure 4 As shown, the rotary device 2 includes a rotary mechanism 21 and a rotating shaft sleeve 22. The rotary mechanism 21 drives the mounting device 3 to rotate back to its initial position, and the rotating shaft sleeve 22 is fixedly fitted onto the outside of the rotary mechanism 21. Please continue to see... Figure 5 The rotating mechanism 21 contains a rotating shaft 212, which can rotate relative to the rotating shaft sleeve 22. The rotating shaft 212 has a fourth locking part 44 that cooperates with the second locking part 42. The mounting device 3 is connected to the rotating device 2 through the cooperation of the second locking part 42 and the fourth locking part 44. This connection also restricts the relative rotation of the mounting device 3 and the rotating shaft 212. Please continue reading... Figure 6 The rotating sleeve 22 is provided with a third locking part 43 that cooperates with the first locking part 41. Similarly, the connection between the mounting device 3 and the rotating device 2 is installed. The rotating device 2 is connected to the support device 1 through the cooperation of the first locking part 41 and the third locking part 43. At the same time, this connection can restrict the relative rotation of the rotating sleeve 22 and the support device 1.

[0054] In summary, when the user rotates the chair body (not shown in the figure), the mounting device 3 rotates along with the chair body (not shown in the figure), and the mounting device 3 drives the rotating shaft 212 to rotate. The rotating shaft 212 rotates relative to the rotating shaft sleeve 22, while the rotating shaft sleeve 22 remains stationary with the support device 1. When the external force that causes the chair body (not shown in the figure) to rotate is released, the rotation mechanism 21 drives the rotating shaft 212 to rotate automatically until the rotating shaft 212 is completely reset to its initial position, thereby achieving the function of automatic reset.

[0055] Furthermore, the inventors of this case also discovered that once the pivot sleeve 22 rotates relative to the support device 1 during use, the internal components of the rotary mechanism 21, such as the shaft, spring, and bearings, cannot maintain synchronous operation, resulting in internal friction and slippage. This causes the spring to repeatedly consume energy, ultimately preventing the mounting device 3 from fully resetting after rotation. Consequently, the seat is prone to misalignment and failure to return to its original position after prolonged use, severely impacting the user experience. Based on this, the inventors discovered that an interference fit between the pivot sleeve 22 and the components of the support device 1 can prevent the pivot sleeve 22 from rotating. However, such an interference fit... While the design can prevent rotation, in actual use, it is prone to loosening due to assembly errors, tolerance deviations, material deformation, or repeated use, which can weaken or even cause the anti-rotation effect to fail. Therefore, as mentioned above, this invention adds a locking fit structure between the rotating bushing 22 and the support device 1 to restrict their relative rotation. This not only allows the rotating bushing 22 to be stably fixed in the longitudinal direction, but also completely restricts the rotation of the rotating bushing 22 from the structure. It can automatically reset after the user leaves, ensuring that the seat always maintains a neat and aligned appearance, which significantly improves the reset reliability of the single chair turntable assembly 10 of this application.

[0056] Furthermore, the "interference fit between the rotating bushing 22 and the components of the support device 1" can also be combined with the aforementioned "addition of a locking fit structure between the rotating bushing 22 and the support device 1 to restrict their relative rotation"; for designing the "interference fit between the rotating bushing 22 and the components of the support device 1", an exemplary configuration includes:

[0057] like Figure 6 As shown, the lower end of the rotating sleeve 22 has a tapered structure with an outer diameter that gradually increases from bottom to top, and the third locking part 43 is specifically located at the lower end of the rotating sleeve 22; as Figure 2 As shown, the first receiving portion 11 forms a first hollow structure on the support device 1, and the first hollow structure is a tapered structure with an inner diameter that gradually increases from bottom to top. The lower end structure of the rotating sleeve 22 matches the structure of the first receiving portion 11, and the lower end of the rotating sleeve 22 is interference-fitted with the first receiving portion 11. The rotating device 2 is detachably mounted on the support device 1 through the fit between the rotating sleeve 22 and the first receiving portion 11; Figure 8As shown, during use, the tapered structure at the lower end of the rotating sleeve 22 is guided by the tapered structure of the first receiving part 11 to achieve centered positioning and extends into the first receiving part 11. In this way, based on the interference fit between the rotating sleeve 22 and the first receiving part 11, the rotating sleeve 22 is subjected to pressure (e.g., from a person sitting on a chair) and / or rotational force, generating a clamping force against the inner wall of the first hollow structure, which can achieve a certain degree of self-locking effect.

[0058] Similarly, please continue to see Figure 5 The upper end of the rotating shaft 212 has a tapered structure with its outer diameter gradually increasing from top to bottom, and the fourth locking part 44 is specifically located at the upper end of the rotating shaft 212. Please continue to see Figure 3 The second receiving portion 33 forms a second hollow structure on the mounting device 3, and the second hollow structure is a tapered mechanism with an inner diameter that gradually increases from top to bottom. The structure of the upper end of the rotating shaft 212 matches the structure of the second receiving portion 33, and the upper end of the rotating shaft 212 is interference-fitted with the second receiving portion 33. The mounting device 3 can be detachably mounted on the rotating device 2 through the fit between the rotating shaft 212 and the second receiving portion 33. Similarly, please refer to... Figure 9 In use, the tapered structure at the upper end of the rotating shaft 212 is guided by the tapered structure of the second receiving part 33 to achieve center positioning and extends into the second receiving part 33. Based on the interference fit between the rotating shaft 212 and the second receiving part 33, the mounting device 3 is subjected to pressure (e.g., from a person sitting on a chair) and / or rotational force, which causes the rotating shaft 212 to generate a clamping force with the inner wall of the second hollow structure, thus achieving a certain degree of self-locking effect.

[0059] As described above, the single chair turntable assembly 10 of this application achieves the function of automatic reset of the mounting device 3 through the rotary device 2. The rotary device 2 and the support device 1 are quickly assembled and disassembled through the interference fit of the tapered structure of the rotating shaft sleeve 22 and the first receiving part 11, and the limiting positioning of the first locking part 41 and the third locking part 43. Similarly, the mounting device 3 and the rotary device 2 are quickly assembled and disassembled through the interference fit of the tapered structure of the rotating shaft 212 and the second receiving part 33, and the limiting positioning of the second locking part 42 and the fourth locking part 44. This allows for quick assembly and disassembly of the support device 1, the rotary device 2, and the mounting device 3 of the single chair turntable assembly 10 without tools, greatly improving assembly efficiency and transport packing density. Furthermore, the quick-assembly structure provides a secure connection after assembly, exhibiting high overall rigidity and effectively bearing the rotation, load, and normal dragging and handling during daily use, without loosening, shaking, or shifting due to the quick-assembly structure.

[0060] Please refer back to the previous article. Figure 2 In one embodiment of this application, the first locking part 41 is configured as a first positioning pin 12, which is fixedly disposed on the inner wall of the first receiving part 11 of the support device 1. Please continue to refer to Figure 4 and Figure 6 The third locking part 43 is configured as a first locking groove 221, which is open along the length of the rotating shaft sleeve 22. The first positioning pin 12 matches the first locking groove 221. Please refer to [link to previous section]. Figure 1 and Figure 8 When the lower end of the rotating sleeve 22 is inserted into the first receiving portion 11 of the support device 1, the first positioning pin 12 slides into the first locking groove 221 along the oblique conical structure to form a limiting fit, and the lower end of the rotating sleeve 22 is interference-fitted with the first receiving portion 11. Thus, in one embodiment of this application, the lower end of the rotating device 2 is connected to the support device 1 through the cooperation of the first positioning pin 12 and the first locking groove 221 on the basis of quick installation, which not only prevents the longitudinal disengagement of the rotating sleeve 22 to a certain extent, but also restricts the rotation of the rotating sleeve 22 relative to the support device 1.

[0061] according to Figure 6 As shown, in one embodiment of this application, specifically, the first locking groove 221 has a downward-facing first opening, which is used for the first positioning pin 12 to extend into the first locking groove 221. Please continue to refer to... Figure 2 The first receiving portion 11 forms a hollow structure on the support device 1, and the first positioning pin 12 extends from the side wall of the hollow structure toward the center of the hollow structure. This application achieves the limiting and anti-rotation cooperation between the rotating bushing 22 and the support device 1 through the first positioning pin 12 and the first locking groove 221.

[0062] according to Figure 3 As shown, in one embodiment of this application, the second locking part 42 is configured as a second locking groove 31, which is fixedly disposed on the inner wall of the second receiving part 33 of the mounting device 3. Please continue to refer to... Figure 4 and Figure 5 The fourth locking part 44 is configured as the second positioning pin 211, which matches the second locking groove 31. Please refer to [link / reference]. Figure 1 and Figure 9 When the upper end of the rotating shaft 212 is inserted into the second receiving part 33 of the mounting device 3, the second positioning pin 211 slides into the second locking groove 31 along the oblique conical structure to form a limiting fit. The upper end of the rotating shaft 212 is interference-fitted with the second receiving part 33. Through the limiting fit and interference fit, on the basis of quick installation, the second positioning pin 211 and the second locking groove 31 are used to fix the end of the rotating device 2 away from the first receiving part 11 in the second receiving part 33 of the mounting device 3. This not only prevents the rotating shaft 212 from longitudinally disengaging to a certain extent, but also restricts the rotation of the rotating shaft 212 relative to the mounting device 3.

[0063] according to Figure 3As shown, in one embodiment of this application, the second locking groove 31 has a downward-facing second opening for the second positioning pin 211 to extend into the second locking groove 31. The second receiving portion 33 forms a hollow structure on the mounting device 3. Please continue to refer to... Figure 5 The second locating pin 211 extends from the outer side wall of the rotating shaft 212 toward the outer side of the rotating shaft 212. Please continue to see Figure 9 When the upper end of the rotating shaft 212 extends into the hollow structure, the second positioning pin 211 extends into the second locking groove 31. This application achieves a limiting and anti-rotation fit between the rotating shaft 212 and the mounting device 3 through the second positioning pin 211 and the second locking groove 31. In the single chair turntable assembly 10 of this application, the rotating shaft sleeve 22 and the support device 1, and the rotating shaft 212 and the mounting device 3 maintain stable axial positioning and rotational synchronization during rotation, preventing loosening or structural misalignment. It can be manually and quickly assembled and disassembled when needed, facilitating assembly, maintenance, or replacement.

[0064] It should be noted that, based on the sequentially detachable installation design of the support device 1, the rotating device 2, and the mounting device 3, when it is necessary to transport or move the assembled chair (for example, when a user needs to move house), and it is unavoidable that the chair will be violently shaken while suspended in the air, in this application, the user can actually move the chair by manually disassembling it for quick disassembly and then moving it. The single chair turntable assembly 10 of this application simultaneously takes into account structural strength and ease of movement.

[0065] according to Figure 5 , Figure 8 and Figure 9As shown, in one embodiment of this application, the rotary mechanism 21 further includes a first bearing 23, a first assembly 24, a second assembly 25, and an elastic component 26. The first bearing 23, the first assembly 24, and the second assembly 25 are sleeved on the rotating shaft 212. The first bearing 23 is disposed inside the first assembly 24, and the inner ring of the first bearing 23 is fixedly connected to the outer ring surface of the rotating shaft 212. The outer ring of the first bearing 23 is fixedly connected to the first assembly 24. The first assembly 24 is fixedly connected to the rotating shaft sleeve 22 by an interference fit, so that the rotating shaft 212 can rotate relative to the rotating shaft sleeve 22. The side of the rotating shaft 212 is provided with a guide protrusion 215. The second assembly 25 is disposed between the first assembly 24 and the guide protrusion 215. The first assembly 24 is provided with at least two first guide rails 241, and the second assembly 25 is provided with at least two second guide rails 251. A first mating portion 242 is formed between the first guide rails 241, and the second guide rails 251 can slide in the first mating portion 242. A second mating portion 253 is formed between the second guide rails 251, and the first guide rails 241 can slide in the second mating portion 253, so that the first guide rails 241 and the second guide rails 251 can slide relative to each other longitudinally without relative rotation. The second assembly 25 is provided with a guide ring inclined surface 252 that mates with the guide protrusion 215. The guide ring inclined surface 252 is used to control the movement trajectory of the guide protrusion 215 when the rotating shaft 212 rotates, so that the second assembly 25 is configured to move closer to or further away from the first assembly 24 when the rotating shaft 212 drives the guide protrusion 215 to rotate. The elastic member 26 is sleeved on the outside of the first kit 24 and the second kit 25 and is located between the first kit 24 and the second kit 25. One end of the elastic member 26 abuts against the first kit 24 and the other end of the elastic member 26 abuts against the second kit 25, so that the elastic member 26 is configured to be compressed when the second kit 25 approaches the first kit 24 and can reset itself after the external force that compresses it disappears.

[0066] A force is applied to rotate the mounting device 3, which in turn drives the rotating shaft 212 to rotate. The rotating shaft 212 rotates relative to the rotating shaft sleeve 22, while the rotating shaft sleeve 22 remains stationary with the support device 1. The rotating shaft 212 drives the guide protrusion 215 to rotate around the rotating shaft 212. The guide protrusion 215 abuts against the guide ring inclined surface 252. As the guide protrusion 215 rotates, it moves around the guide ring inclined surface 252. The guide protrusion 215 pushes against the guide ring inclined surface 252, causing the second assembly 25 to move longitudinally upward under the limit of the guide rail, thereby compressing the elastic component 26. When the external force of rotation is released, under the restoring force of the elastic component 26, the second assembly 25 moves downward and presses down. Because the second assembly 25 has the guide ring inclined surface 252, the guide protrusion 215 rotates in the opposite direction around the rotating shaft 212. The guide protrusion 215 drives the rotating shaft 212 to automatically rotate back until the guide protrusion 215 is completely reset to its initial position, thereby achieving the function of automatic reset of the rotating device 2. The single chair turntable assembly 10 of this application can achieve a controllable automatic reset function under the setting of the rotary device 2.

[0067] In some embodiments, the elastic member 26 is specifically configured as a helical compression spring.

[0068] In some embodiments, the first kit 24 and the second kit 25 are made of plastic.

[0069] In some embodiments, such as Figure 5 As shown, the first kit 24 includes two first guide rails 241, and a first mating part 242 is formed between the two first guide rails 241. The second kit 25 includes two second guide rails 251, and a second mating part 253 is formed between the two second guide rails.

[0070] In some embodiments, such as Figure 5 and Figure 9 As shown, the guide protrusion 215 includes a rolling part 213 and a mounting pin 214. The mounting pin 214 is fixedly mounted on the rotating shaft 212, and the rolling part 213 is sleeved on the mounting pin 214, rotatably connected to the mounting pin 214. The rolling part 213 abuts against the guide ring inclined surface 252. When the mounting device 3 rotates, the rotating shaft 212 drives the rolling part 213 on the guide protrusion 215 to rotate around the rotating shaft 212. The rolling part 213 abuts against the guide ring inclined surface 252 of the second assembly 25, and a sliding contact is generated between the rolling part 213 and the guide ring inclined surface 252, thereby causing the second assembly 25 to move upward and compress the elastic member 26. The rolling part 213 is rotatably mounted on the mounting pin 214, which can reduce the friction between the guide protrusion 215 and the second assembly 25 when the rotating shaft 212 rotates, effectively avoiding the jamming or wear problems existing in traditional sliding contact, and improving the stability and life of the rotary mechanism 21.

[0071] In some embodiments, the rotating shaft 212 has a through hole 321, and the mounting pin 214 is inserted and installed in the through hole 321, with the mounting pin 214 and the through hole 321 being interference-fitted. In other embodiments, the mounting pin 214 and the rotating shaft 212 are integrally formed.

[0072] In some embodiments, the rolling part 213 is specifically configured as a bearing, which is sleeved on the mounting pin 214.

[0073] In some embodiments, the rolling part 213 is made of a metallic material.

[0074] In some embodiments, the rolling part 213 is made of plastic, and the plastic rolling part 213 has greater damping, which reduces the rolling speed of the rolling part 213, and the rotary mechanism 21 can slowly and stably return to the starting position, preventing it from rotating too fast and hitting the user.

[0075] In some embodiments, the rolling portion 213 is provided with toothed protrusions (not shown in the figures). The toothed protrusions can reduce the noise generated by friction between the rolling portion 213 and the mounting pin 214 and the guide ring inclined surface 252, effectively improving comfort. In some embodiments, the guide ring inclined surface 252 is also provided with protruding ridges (not shown in the figures) that cooperate with the toothed protrusions.

[0076] In some embodiments, such as according to Figure 5 , Figure 8 and Figure 9 As shown, the rotary mechanism 21 also includes a second bearing 27. The end of the rotating shaft 212 is rotatably disposed in the second bearing 27, which is located inside the lower end of the rotating shaft sleeve 22. The outer side of the second bearing 27 abuts against the rotating shaft sleeve 22, and the second bearing 27 is fixedly connected to the rotating shaft sleeve 22 by an interference fit. When the mounting device 3 rotates, it drives the rotating shaft 212 to rotate within the first bearing 23 and the second bearing 27. The first bearing 23 and the second bearing 27 together form a double-support bearing structure, ensuring smooth and quiet rotation of the rotating shaft 212 and preventing wobbling and wear caused by single-point support.

[0077] In some embodiments, such as Figure 5 As shown, the guide ring inclined surface 252 includes two symmetrically arranged semi-annular inclined surfaces. By setting the guide ring inclined surface 252 as two symmetrically distributed semi-annular inclined surfaces, the symmetry and force balance of the guide ring inclined surface 252 can be improved.

[0078] according to Figure 5 , Figure 8 and Figure 10 As shown, in one embodiment of this application, a portion of the rotating shaft 212 blocks the upper side of the first assembly 24 and the first bearing 23, and a portion of the rotating shaft sleeve 22 blocks the lower side of the first assembly 24. The rotating shaft 212 is provided with a first step 216, and the rotating shaft sleeve 22 is provided with a second step 222. The rotating mechanism 21 also includes a washer 28, which has an annular structure and is installed between the first assembly 24 and the elastic member 26. When the mounting device 3 drives the rotating shaft 212 to rotate, the elastic member 26 is compressed, thereby temporarily storing energy. When the elastic member 26 is compressed, one end of the elastic member 26 evenly transmits the load to the first assembly 24 through the washer 28. By setting the washer 28, direct contact between the elastic member 26 and the first assembly 24 can be effectively isolated, preventing local wear and jamming of the first assembly 24 caused by long-term repeated compression of the elastic member 26, extending the service life of the elastic member 26, and improving the reset reliability and durability of the entire rotating mechanism 21.

[0079] Please also see Figure 10A portion of the gasket 28 is located on the second step 222 of the rotating sleeve 22. The first assembly 24 is mounted on the gasket 28, with a portion of the gasket 28 located between the second step 222 and the first assembly 24. The periphery of the first assembly 24 is press-fitted with the inner side of the rotating sleeve 22. The first bearing 23 is mounted inside the first assembly 24, with the outer circumference of the first bearing 23 press-fitted with the inner side of the first assembly 24. The rotating shaft 212 passes through the first bearing 23, the first assembly 24, and the gasket 28 in sequence, so that the first step 216 blocks the upper side of the first bearing 23 and the first assembly 24, and the second step 222 blocks the lower side of the gasket 28. The first step 216 abuts against the upper surface of the first bearing 23. Through the longitudinal clamping fit of the first step 216 and the second step 222, the gasket 28, the first assembly 24, and the first bearing 23 are clamped between the first step 216 and the second step 222, so that the gasket 28, the first assembly 24, and the first bearing 23 abut against each other and are fixed. By setting a first step 216 and a second step 222 that are in relative fit between the rotating shaft 212 and the rotating shaft sleeve 22, the gasket 28, the first kit 24 and the first bearing 23 are stably pressed together. At the same time, the interference fit between the rotating shaft sleeve 22 and the first kit 24, and between the first kit 24 and the first bearing 23, effectively improves the operational stability and durability of the rotary mechanism 21.

[0080] In some embodiments, such as Figure 4 As shown, the rotary mechanism 21 also includes a cover plate 29; please refer to [link to previous document]. Figure 10 The cover plate 29 is fitted onto the rotating shaft 212. The cover plate 29 and the rotating shaft 212 are fixedly connected by an interference fit, so that the cover plate 29 is connected to the rotating shaft 212, the first bearing 23, the first kit 24, and the rotating shaft sleeve 22. The cover plate 29 encloses the above parts for aesthetic purposes and improves the overall structural stability of the rotary device 2. It also prevents the above parts from being loosened and disintegrated by the elastic component 26 during long-term repeated use, thus extending the service life of the rotary device 2.

[0081] In some embodiments, such as Figure 2 , Figure 8 and Figure 9 As shown, the support device 1 is provided with a number of circumferentially spaced support legs 13, and an anti-slip pad 131 is provided at the lower end of the support leg 13.

[0082] In some embodiments, the support device 1 is provided with four circumferentially spaced support legs 13.

[0083] In some embodiments, the anti-slip pad 131 is configured as a rubber anti-slip pad 131. The rubber anti-slip pad 131 not only improves the frictional stability between the support device 1 and the ground, but also plays a role in shock absorption, noise reduction and anti-slip protection.

[0084] This application utilizes an interference-fit tapered structure and a locking structure between the rotating shaft sleeve 22 and the support device 1, and between the rotating shaft 212 and the mounting device 3, enabling the single chair turntable assembly 10 to achieve rapid positioning and insertion without tools. This effectively improves assembly efficiency and shipping packing density, reducing logistics and labor costs. Through the structure of the first bearing 23, elastic component 26, first kit 24, second kit 25, and guide ring inclined surface 252 located inside the rotating shaft 212, the single chair turntable assembly 10 can rotate under external force during use, and achieves stable and smooth automatic return to its original position after the external force is released by spring-released restoring force. The guide protrusion 215 of the rotating shaft 212 and the second step 222 of the rotating shaft sleeve 22 longitudinally limit and press the first bearing 23, first kit 24, and gasket 28, ensuring stable fit of internal parts during long-term rotation, preventing loosening and disintegration, and extending service life. The single chair turntable assembly 10 of this application not only achieves automatic reset but also enables tool-free rapid assembly and disassembly.

[0085] according to Figures 1 to 10 As shown, a chair includes the single chair turntable assembly 10 in the above embodiment.

[0086] Example 2:

[0087] It should be noted that other disclosed support devices, rotating devices, and mounting devices employing various fixing methods can also utilize the technical solution of this application. For example, at least one of other disclosed support devices, rotating devices, and mounting devices can be made to deviate from the structures of support device 1, rotating device 2, and mounting device 3 described in Embodiment 1, and ensure that: the support device has a first receiving portion 11, the first receiving portion 11 has a first locking portion 41; the mounting device has a second receiving portion 33, the second receiving portion 33 has a second locking portion 42; the rotating device has a third locking portion 43 detachably engaged with the first locking portion 41, and a fourth locking portion 44 detachably connected to the second locking portion 42; the rotating device 2 is detachably connected to the support device 1, and the rotating device 2 is detachably connected to the mounting device 3. In this way, the rapid assembly and disassembly function of this application can be achieved. This application possesses extremely strong versatility.

[0088] In the description of this specification, the use of terms such as "an embodiment," "some examples," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" indicates that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0089] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A single-chair turntable assembly, characterized in that: include The support device is provided with a first receiving part, and the first receiving part is provided with a first locking part; The mounting device is provided with a second receiving part, and the second receiving part is provided with a second locking part; The rotary device is provided with a third locking part that is detachably engaged with the first locking part and a fourth locking part that is engaged with the second locking part; the rotary device is detachably connected to the support device and the rotary device is detachably connected to the mounting device.

2. The single-chair turntable assembly according to claim 1, characterized in that: The rotating device includes a rotating shaft sleeve and a rotating mechanism. The rotating shaft sleeve is fixedly sleeved on the outside of the rotating mechanism. The rotating mechanism is used to drive the installation device to rotate. The rotating mechanism is provided with a rotating shaft. The rotating shaft sleeve is provided with a third locking part that is detachably connected to the first locking part. The rotating shaft is provided with a fourth locking part that is detachably connected to the second locking part.

3. The single-chair turntable assembly according to claim 2, characterized in that: The lower end of the rotating bushing is a tapered structure with an outer diameter that gradually increases from bottom to top, and the third locking portion is disposed at the lower end of the rotating bushing; the first receiving portion forms a first hollow structure on the support device, and the first hollow structure is a tapered structure with an inner diameter that gradually increases from bottom to top; and / or The upper end of the rotating shaft is a tapered structure with an outer diameter that gradually increases from top to bottom, and the fourth locking part is disposed at the upper end of the rotating shaft; the second receiving part forms a second hollow structure on the mounting device, and the second hollow structure is a tapered structure with an inner diameter that gradually increases from top to bottom.

4. The single-chair turntable assembly according to claim 1, characterized in that: The first locking part is configured as a first positioning pin, the third locking part is configured as a first locking groove, one end of the rotating device extends into the first receiving part, and forms a connection with the support device through the cooperation of the first positioning pin and the first locking groove.

5. The single-chair turntable assembly according to claim 4, characterized in that: The first slot has a downward-facing first opening for the first positioning pin to extend into the first slot. The first receiving portion forms a hollow structure on the support device, and the first positioning pin extends from the side wall of the hollow structure toward the center of the hollow structure.

6. The single-chair turntable assembly according to claim 2, characterized in that: The second locking part is configured as a second locking groove, the fourth locking part is configured as a second positioning pin, and the end of the rotary device away from the first receiving part extends into the second receiving part, and forms a connection with the mounting device through the cooperation of the second positioning pin and the second locking groove.

7. The single-chair turntable assembly according to claim 6, characterized in that: The second slot has a downward-facing second opening for the second positioning pin to extend into the second slot. The second receiving portion forms a hollow structure on the mounting device. The second positioning pin extends from the outer side wall of the rotating shaft toward the outer side of the rotating shaft.

8. The single-chair turntable assembly according to claim 2, characterized in that: The rotary mechanism further includes a first bearing, a first assembly, a second assembly, and an elastic component. The side of the rotating shaft is provided with a guide protrusion. The inner ring of the first bearing is fixedly connected to the outer circumferential surface of the rotating shaft. The outer ring of the first bearing is fixedly connected to the first assembly. The first assembly is fixedly connected to the rotating shaft sleeve. Both the first assembly and the second assembly are sleeved on the rotating shaft. The second assembly is disposed between the first assembly and the guide protrusion. The first assembly is provided with at least two first guide rails. The second assembly is provided with at least two second guide rails. A first mating part is formed between the first guide rails. The second guide rails are slidably disposed in the first mating part. A second mating part is formed between the second guide rails. The first guide rails are slidably disposed in the second mating part. The second kit has a guide ring bevel that mates with the guide protrusion. The second kit is configured to move closer to or further away from the first kit when the rotating shaft drives the guide protrusion to rotate. The elastic member is sleeved on the outside of the first kit and the second kit and is located between the first kit and the second kit. The elastic member is configured to be compressed when the second kit moves closer to the first kit and to reset itself after the external force compressing it disappears.

9. The single-chair turntable assembly according to claim 8, characterized in that: The portion of the rotating shaft obstructs the upper side of the first kit and the first bearing, and the portion of the rotating shaft sleeve obstructs the lower side of the first kit; The rotating shaft has a first step, and the rotating shaft is fitted with a second step; the rotating mechanism also includes a shim, the shim is disposed between the first kit and the elastic component, and part of the shim is located between the second step and the first kit; the first step blocks the upper side of the first bearing and the first kit, and the second step blocks the lower side of the shim; the first step and the second step cooperate to clamp the shim, the first kit and the first bearing between the first step and the second step.

10. A chair, characterized in that: Includes the single-chair turntable assembly as described in any one of claims 1 to 9.

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