Rotating device and sofa

By designing a rotating device in the sofa, the sliding rail assembly and the central rotary shaft assembly can achieve flexible rotation of the seat, solving the problem that the existing sofa cannot rotate, and improving the use scenario and comfort.

CN222237229UActive Publication Date: 2024-12-27ZUOYOU FURNITURE (SHENZHEN) CO LTD
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Patent Information

Application Number
CN202421009873.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-10
Publication Date
2024-12-27
Estimated Expiration
2034-05-10

AI Technical Summary

Technical Problem

The existing sofa cannot be rotated separately, and the seat orientation cannot meet the needs of diverse usage scenarios.

Method used

A rotating device is designed, including a frame, a guide mechanism, a rotating mechanism and a connecting rod mechanism. The seat is rotated through the cooperation of the slide rail assembly and the central rotating shaft assembly, and an optional driving motor can be used for electric control to reduce operating force and noise.

Benefits of technology

It improves the stability and simplicity of operation of the rotating mechanism, realizes flexible rotation of the seat, and enhances the use scenario and comfort of the sofa.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a rotating device and a sofa, the rotating device comprises a frame, a guide mechanism, a rotating mechanism and a connecting rod mechanism, the guide mechanism comprises a slide rail assembly and a chassis assembly slidably arranged on the slide rail assembly, and the chassis assembly is provided with a mounting hole; the rotating mechanism comprises a central rotating shaft assembly and a turntable, the central rotating shaft assembly is arranged in the mounting hole, and the turntable is arranged at the top end of the central rotating shaft assembly; the connecting rod mechanism is arranged below the chassis assembly and comprises a first connecting rod and a second connecting rod which are mutually hinged, the first connecting rod is connected with the bottom end of the central rotating shaft assembly, and the second connecting rod is connected with the frame; the first connecting rod drives the center rotating shaft assembly to rotate in the horizontal rotating process, and meanwhile the first connecting rod pushes the center rotating shaft assembly to move in the sliding direction of the sliding rail assembly. According to the rotating device, the rotating mechanism is arranged on the guide mechanism, the stability of the rotating mechanism in the rotating process is improved, and the rotating device is simple in structure and convenient to operate.
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Description

Technical Field

[0001] The utility model relates to the technical field of household devices, in particular to a rotating device and a sofa. Background Art

[0002] A sofa is a type of soft furniture, usually with a backrest and armrests, for sitting or lying down. Sofas are usually placed in living rooms or sitting rooms for people to rest, chat or watch TV. Sofas are divided into single sofas and multi-person sofas according to the number of seats they have. Single sofas are usually small, simple in design, and suitable for single use. Multi-person sofas, also called long sofas or sofa beds, usually have larger sizes and multiple seats, which can accommodate multiple people sitting at the same time.

[0003] Most of the current sofas are of integrated design. The orientation of a single seat cannot be rotated to increase the usage scenarios and comfort of the sofa, and cannot meet people's diverse scenario needs.

[0004] Therefore, the existing technology needs to be improved and developed. Utility Model Content

[0005] In view of the above-mentioned defects of the prior art, the purpose of the present invention is to provide a rotating device and a sofa, so as to solve the technical problem that the existing sofa cannot rotate the direction of a certain seat alone.

[0006] The technical solutions adopted by the utility model to solve the above problems are as follows:

[0007] A rotating device, comprising: a frame;

[0008] A guide mechanism, the guide mechanism comprising a slide rail assembly and a chassis assembly, the slide rail assembly is connected to the frame, the chassis assembly can be slidably arranged on the slide rail assembly, and the chassis assembly is provided with a mounting hole;

[0009] The rotating mechanism comprises a central rotating shaft assembly and a rotating disk, wherein the central rotating shaft assembly is vertically arranged in the mounting hole, and the rotating disk is arranged at the top end of the central rotating shaft assembly;

[0010] A connecting rod mechanism is arranged below the chassis assembly, the connecting rod mechanism comprises a first connecting rod and a second connecting rod which are hinged to each other, the first connecting rod is connected to the bottom end of the central shaft assembly, and the second connecting rod is connected to the frame;

[0011] Wherein, during the horizontal rotation of the first connecting rod, the first connecting rod drives the central rotating shaft assembly to rotate, and at the same time, the first connecting rod pushes the central rotating shaft assembly to move along the sliding direction of the slide rail assembly.

[0012] Optionally, the rotating device also includes a driving motor, which is rotatably connected to the frame, and the output end of the driving motor is connected to an end of the first connecting rod away from the central rotating shaft assembly. The extension and retraction direction of the driving motor is perpendicular to the central axis of the central rotating shaft assembly, and is used to drive the first connecting rod to rotate horizontally with the central rotating shaft assembly as the rotation center.

[0013] Optionally, the slide rail assembly is horizontally arranged on the frame, and the sliding direction of the slide rail assembly is arranged at an angle of 45 degrees with the long side of the frame.

[0014] Optionally, the slide rail assembly includes two first cylinders and two connecting parts, the two first cylinders and the two connecting parts are cross-arranged to form a frame structure, and the connecting parts are fixedly connected to the frame; the chassis assembly includes a chassis and two second cylinders, the two second cylinders are respectively mounted on the two first cylinders and can slide relative to the first cylinders, and the chassis is fixedly connected to the two cylinders.

[0015] Optionally, the guide mechanism further includes an anti-collision sleeve, which is provided on the first cylinder and located at the end of the second cylinder.

[0016] Optionally, the guide mechanism also includes a support plate, which is arranged below the chassis; the rotating mechanism also includes a pulley assembly, which includes a mounting seat and a ball bearing which is arranged on the mounting seat and can rotate relative to the mounting seat, the mounting seat is fixed on the chassis, and the ball bearing abuts against the support plate.

[0017] Optionally, the central rotating shaft assembly includes: an axis, the axis including a first cylindrical section, a second cylindrical section and a third cylindrical section connected in sequence, the diameter of the first cylindrical section is larger than the diameter of the second cylindrical section, the diameter of the second cylindrical section is larger than the diameter of the third cylindrical section, the turntable is connected to the first cylindrical section, and the connecting rod mechanism is connected to the third cylindrical section; an axis outer steel cylinder, sleeved on the outer circumference of the second cylindrical section, the inner diameter of the axis outer steel cylinder is smaller than the diameter of the first cylindrical section and larger than the diameter of the second cylindrical section; an axis outer rubber cylinder, sleeved on the outer circumference of the axis outer steel cylinder, the axis outer rubber cylinder is provided with a step at the end facing the first cylindrical section, and the chassis assembly is provided on the step.

[0018] Optionally, the first connecting rod includes a stainless steel first connecting rod; and / or the second connecting rod includes a stainless steel second connecting rod.

[0019] A sofa, wherein the sofa comprises the rotating device as described in any one of the above items.

[0020] Optionally, the sofa further comprises a seat cushion support, wherein the seat cushion support comprises a seat frame and a back frame, wherein the back frame is arranged on the seat frame, and an angle is formed between the seat frame and the back frame.

[0021] In summary, the beneficial effects of the utility model are:

[0022] The rotating device of the utility model comprises a frame, a guide mechanism, a rotating mechanism and a connecting rod mechanism. The rotating mechanism is arranged on the guide mechanism, so that the stability of the rotating mechanism during the rotation process is improved and the noise is reduced. In addition, by arranging the connecting rod mechanism, the force required to rotate the turntable is smaller and the operation is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a structural schematic diagram of the rotating device of the utility model;

[0025] Figure 2 This is a schematic diagram of the structure in which the chassis is located at the first end of the slide rail assembly in the utility model;

[0026] Figure 3 This is a schematic diagram of the structure in which the chassis is located at the second end of the slide rail assembly in the utility model;

[0027] Figure 4 This is a schematic diagram of the structure when the rotating device in the utility model rotates 45 degrees;

[0028] Figure 5 It is a structural schematic diagram of the first end of the chassis returning to the slide rail assembly in the utility model;

[0029] Figure 6 This is a schematic diagram of the structure when the rotating device in the utility model rotates 90 degrees;

[0030] Figure 7 It is a cross-sectional view of the rotating device in the utility model.

[0031] Among them: 100, frame; 200, guide mechanism; 210, slide rail assembly; 211, first cylinder; 212, connecting piece; 220, chassis assembly; 221, second cylinder; 222, chassis; 300, rotating mechanism; 310, central shaft assembly; 311, axis; 312, outer steel cylinder of axis; 313, outer rubber cylinder of axis; 320, turntable; 400, connecting rod mechanism; 410, first connecting rod; 420, second connecting rod; 500, driving motor; 600, cushion bracket. DETAILED DESCRIPTION

[0032] In order to enable those skilled in the art to better understand the solution of the utility model, the following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, other embodiments obtained by ordinary technicians in the field without creative work are all within the scope of protection of the utility model.

[0033] See also Figure 1 and Figure 2 In one embodiment of the utility model, a rotating device is disclosed, including a frame 100; a guide mechanism 200, wherein the guide mechanism 200 includes a slide rail assembly 210 and a chassis assembly 220, wherein the slide rail assembly 210 is connected to the frame 100, and the chassis assembly 220 can be slidably arranged on the slide rail assembly 210, and the chassis assembly 220 is provided with a mounting hole; a rotating mechanism 300, including a central shaft assembly 310 and a turntable 320, wherein the central shaft assembly 310 is vertically arranged in the mounting hole, and the turntable 320 is arranged on the central shaft assembly 310. 0; a connecting rod mechanism 400 is arranged below the chassis assembly 220, and the connecting rod mechanism 400 includes a first connecting rod 410 and a second connecting rod 420 which are hinged to each other, the first connecting rod 410 is connected to the bottom end of the central rotating shaft assembly 310, and the second connecting rod 420 is connected to the frame 100; wherein, during the horizontal rotation of the first connecting rod 410, the first connecting rod 410 drives the central rotating shaft assembly 310 to rotate, and at the same time, the first connecting rod 410 pushes the central rotating shaft assembly 310 to move along the sliding direction of the slide rail assembly 210.

[0034] The rotating device of this embodiment can be controlled manually or electrically.

[0035] In this embodiment, an end of the slide rail assembly 210 close to the connecting rod mechanism 400 is a first end, and an end away from the connecting rod mechanism 400 is a second end.

[0036] See also Figure 2When manually controlled, the movement process of the rotating device is as follows: when the chassis assembly 220 is located at the first end of the slide rail assembly 210 (the end close to the connecting rod mechanism 400), at this time, a first direction angle is formed between the first connecting rod 410 and the second connecting rod 420, and the turntable 320 is rotated counterclockwise by manpower, and the turntable 320 drives the central shaft assembly 310 to rotate. The central shaft assembly 310 applies a torque to the first connecting rod 410, and the torque causes the first connecting rod 410 to push the chassis assembly 220 toward the second end of the slide rail assembly 210 (the end away from the connecting rod mechanism 400). At the same time, the first connecting rod 410 rotates counterclockwise around the axis of the central shaft assembly 310.

[0037] See also Figure 3 and Figure 4 When the turntable 320 assembly rotates to 45 degrees (the edge of the turntable and the edge of the frame 100 form a 45-degree angle), the chassis assembly 220 just moves to the second end of the slide rail assembly 210 (the end away from the connecting rod mechanism 400). At this time, the angle between the first connecting rod 410 and the second connecting rod 420 is 0 degrees. Continue to rotate the turntable 320 counterclockwise, and a second direction angle begins to be formed between the first connecting rod 410 and the second connecting rod 420. The first direction angle is opposite to the second direction angle. The first connecting rod 410 pulls the chassis assembly 220 from the second end of the slide rail assembly 210 (the end away from the connecting rod mechanism 400) toward the first end of the slide rail assembly 210 (the end close to the connecting rod mechanism 400) until the chassis assembly 220 moves to the first end of the slide rail assembly 210, completing a movement cycle. Please refer to Figure 5 and Figure 6 When the chassis assembly 220 moves to the first end of the slide rail assembly 210, the turntable 320 rotates exactly 90 degrees.

[0038] The movement process and principle of rotating the turntable 320 clockwise are the same as the process of rotating the turntable 320 counterclockwise, and will not be repeated here.

[0039] See also Figure 1 The rotating device also includes a driving motor 500, which is rotatably connected to the frame 100. The output end of the driving motor 500 is connected to the end of the first connecting rod 410 away from the central rotating shaft assembly 310. The telescopic direction of the driving motor 500 is perpendicular to the central axis of the central rotating shaft assembly 310, and is used to push the first connecting rod 410 to rotate horizontally with the central rotating shaft assembly 310 as the rotation center.

[0040] See also Figure 1 and Figure 2When the rotating device is electrically controlled, the movement process of the rotating device is as follows: when the chassis assembly 220 is located at the first end of the slide rail assembly 210 (one end close to the connecting rod mechanism 400), at this time, a first direction angle is formed between the first connecting rod 410 and the second connecting rod 420, and the telescopic rod of the driving motor 500 drives the first connecting rod 410 to rotate counterclockwise in the horizontal direction with the central axis of the central rotating shaft assembly 310 as the rotation center, and the first connecting rod 410 drives the central rotating shaft assembly 310 to rotate synchronously, and the central rotating shaft assembly 310 drives the turntable 320 to rotate counterclockwise. At the same time, the first connecting rod 410 pushes the chassis assembly 220 to slide toward the second end of the slide rail assembly 210.

[0041] See also Figure 3 and Figure 4 When the first link 410 is parallel to the second link 420, the chassis assembly 220 just slides to the second end of the rail assembly 210. At this time, the turntable 320 just rotates 45 degrees, and the motor continues to drive the first link 410 to rotate counterclockwise. At this time, the first link 410 and the second link 420 begin to form a second direction angle, and the first direction angle is opposite to the second direction angle. The first link 410 pulls the chassis assembly 220 from the second end of the rail assembly 210 (the end away from the link mechanism 400) toward the first end of the rail assembly 210 (the end close to the link mechanism 400) until the chassis assembly 220 moves to the first end of the rail assembly 210, completing a motion cycle. Please refer to Figure 5 and Figure 6 When the chassis assembly 220 moves to the first end of the slide rail assembly 210, the turntable 320 rotates exactly 90 degrees.

[0042] The rotating device of this embodiment, by providing a connecting rod mechanism 400, requires less force to rotate the turntable 320, and by providing a guide mechanism 200, the rotation process is smoother, the noise is reduced, the structure is simple, and the assembly is convenient.

[0043] See also Figure 4 The slide rail assembly 210 is horizontally arranged on the frame, and the sliding direction of the slide rail assembly 210 is arranged at an angle of 45 degrees with the long side of the frame 100.

[0044] When the chassis assembly 220 is located at the first end of the slide rail assembly 210 (the end close to the connecting rod mechanism 400), the length direction of the turntable 320 is parallel to the length direction of the frame 100; when the chassis assembly 220 is located at the second end of the slide rail assembly 210 (the end away from the connecting rod mechanism 400), the length direction of the turntable 320 forms an angle of 45 degrees with the length direction of the frame 100; when the chassis assembly 220 returns to the first end of the slide rail assembly 210 (the end close to the connecting rod mechanism 400) again, the length direction of the turntable 320 is perpendicular to the length direction of the frame 100.

[0045] See also Figure 5 The slide rail assembly 210 includes two first cylinders 211 and two connecting members 212. The two first cylinders 211 and the two connecting members 212 are cross-arranged to form a frame structure. The connecting members 212 are fixedly connected to the frame 100. Please refer to Figure 7 The chassis assembly 220 includes a chassis 222 and two second cylinders 221. The two second cylinders 221 are respectively mounted on the two first cylinders 211 and can slide relative to the first cylinders 211. The chassis 222 is fixedly connected to the two cylinders.

[0046] Compared with the grooved slide rail, the second cylinder 221 is sleeved on the first cylinder 211 in this embodiment, so that the contact surface between the first cylinder 211 and the second cylinder 221 is larger, and the sliding process of the chassis 222 is more stable. In this embodiment, the two first cylinders 211 are connected and fixed by the connecting member 212, so that the slide rail assembly 210 is modularized, easy to assemble, reduces assembly errors, and slides more smoothly.

[0047] In this embodiment, the guide mechanism 200 further includes an anti-collision sleeve, which is disposed on the first cylinder 211 and located at the end of the second cylinder 221 .

[0048] Four anti-collision sleeves may be provided, wherein two anti-collision sleeves are respectively provided at two ends of one second cylinder 221, and the other two anti-collision sleeves are provided at two ends of another second cylinder 221. The anti-collision sleeves may be resistance plastic steel sleeves.

[0049] Resistance plastic steel sleeves are inserted into both ends of the second cylinder 221, so that the precision between the first cylinder 211 and the second cylinder 221 is higher, achieving a sound-absorbing effect.

[0050] In this embodiment, an injection hole is provided on the second cylinder 221, and the injection hole is used to inject butter to make it more lubricated.

[0051] In this embodiment, the guide mechanism 200 also includes a support plate, which is arranged below the chassis assembly 220; the rotating mechanism 300 also includes a pulley assembly, which includes a mounting seat and a ball bearing which is arranged on the mounting seat and can rotate relative to the mounting seat, the mounting seat is fixed on the chassis 222, and the ball bearing abuts against the support plate.

[0052] Specifically, the support plate is located between the two first cylinders 211, and the support plate can be connected and fixed to the frame, and the pulley assembly includes a bull's eye wheel, and a plurality of bull's eye wheels can be provided. The plurality of bull's eye wheels are arranged in a circular array. The rollers of the plurality of bull's eye wheels can slide on the support plate, so that the center of gravity of the turntable 320 is more stable, and the stability of the rotating device is improved.

[0053] In this example, see Figure 7 The central rotating shaft assembly 310 includes: an axis 311, the axis 311 includes a first cylindrical section, a second cylindrical section and a third cylindrical section connected in sequence, the diameter of the first cylindrical section is greater than the diameter of the second cylindrical section, the diameter of the second cylindrical section is greater than the diameter of the third cylindrical section, the turntable 320 is connected to the first cylindrical section, and the connecting rod mechanism 400 is connected to the third cylindrical section; an axis outer steel cylinder 312, which is sleeved on the outer circumference of the second cylindrical section, the inner diameter of the axis outer steel cylinder 312 is smaller than the diameter of the first cylindrical section and greater than the diameter of the second cylindrical section; an axis outer rubber cylinder 313, which is sleeved on the outer circumference of the axis outer steel cylinder 312, and a step is provided at the end of the axis outer rubber cylinder 313 facing the first cylindrical section, and the chassis assembly 220 is provided on the step.

[0054] Specifically, the two ends of the axis 311 are fixedly connected to the turntable 320 and the second connecting rod 420 respectively, and the axis 311 is rotatably connected to the axis outer steel cylinder 312. When the turntable 320 or the second connecting rod 420 is rotated by external force, the turntable 320, the axis 311 and the second connecting rod 420 rotate.

[0055] In this embodiment, the first connecting rod 410 includes a stainless steel first connecting rod; and / or the second connecting rod 420 includes a stainless steel second connecting rod. Stainless steel has high strength and can withstand greater pressure and load.

[0056] As another embodiment of the present application, a sofa is also disclosed, wherein the sofa includes the above-mentioned rotating device.

[0057] In this example, see Figure 4 The sofa further comprises a seat cushion support 600, wherein the seat cushion support 600 comprises a seat frame and a back frame, wherein the back frame is arranged on the seat frame, and an angle is formed between the seat frame and the back frame.

[0058] In summary, the rotating device of the present embodiment includes a frame 100, a guide mechanism 200, a rotating mechanism 300 and a connecting rod mechanism 400. The guide mechanism 200 includes a slide rail assembly 210 and a chassis assembly 220 slidably disposed on the slide rail assembly 210, and the chassis assembly 220 is provided with a mounting hole; the rotating mechanism 300 includes a central rotating shaft assembly 310 and a rotating disk 320, the central rotating shaft assembly 310 is vertically disposed in the mounting hole, and the rotating disk 320 is disposed on the top of the central rotating shaft assembly 310; the connecting rod mechanism The link mechanism 400 is arranged below the chassis 222. The link mechanism 400 includes a first link 410 and a second link 420 that are hinged to each other. The first link 410 is connected to one end of the central shaft assembly 310 away from the turntable 320, and the second link 420 is connected to the frame 100. When the first link 410 rotates horizontally, the first link 410 drives the central shaft assembly 310 to rotate, and at the same time, the first link 410 pushes the central shaft to move along the sliding direction of the slide rail assembly 210. The rotating device of the utility model improves the stability of the rotating mechanism 300 during the rotation process by arranging the rotating mechanism 300 on the guide mechanism 200, and has a simple structure and is easy to operate.

[0059] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0060] It should be noted that the present invention takes a rotating device and a sofa as examples to introduce the specific structure and working principle of the present invention, but the application of this embodiment is not limited to rotating devices and sofas, and can also be applied to the production and use of other similar workpieces.

[0061] It should be understood that the present invention is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present invention is limited only by the appended claims.

[0062] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A rotating device, characterized in that: include: frame; A guide mechanism, the guide mechanism comprising a slide rail assembly and a chassis assembly, the slide rail assembly is connected to the frame, the chassis assembly can be slidably arranged on the slide rail assembly, and the chassis assembly is provided with a mounting hole; The rotating mechanism comprises a central rotating shaft assembly and a rotating disk, wherein the central rotating shaft assembly is vertically arranged in the mounting hole, and the rotating disk is arranged at the top end of the central rotating shaft assembly; A connecting rod mechanism is arranged below the chassis assembly, the connecting rod mechanism comprises a first connecting rod and a second connecting rod which are hinged to each other, the first connecting rod is connected to the bottom end of the central shaft assembly, and the second connecting rod is connected to the frame; Wherein, during the horizontal rotation of the first connecting rod, the first connecting rod drives the central rotating shaft assembly to rotate, and at the same time, the first connecting rod pushes the central rotating shaft assembly to move along the sliding direction of the slide rail assembly.

2. The rotating device according to claim 1, characterized in that: The rotating device also includes a driving motor, which is rotatably connected to the frame. The output end of the driving motor is connected to an end of the first connecting rod away from the central rotating shaft assembly. The extension direction of the driving motor is perpendicular to the central axis of the central rotating shaft assembly, and is used to drive the first connecting rod to rotate horizontally with the central rotating shaft assembly as the rotation center.

3. The rotating device according to claim 1, characterized in that: The slide rail assembly is horizontally arranged on the frame, and the sliding direction of the slide rail assembly is arranged at an angle of 45 degrees with the long side of the frame.

4. The rotating device according to claim 1, characterized in that: The slide rail assembly includes two first cylinders and two connecting parts, the two first cylinders and the two connecting parts are cross-arranged to form a frame structure, and the connecting parts are fixedly connected to the frame; the chassis assembly includes a chassis and two second cylinders, the two second cylinders are respectively mounted on the two first cylinders and can slide relative to the first cylinders, and the chassis is fixedly connected to the two cylinders.

5. The rotating device according to claim 4, characterized in that: The guide mechanism further comprises an anti-collision sleeve, which is arranged on the first cylinder and located at the end of the second cylinder.

6. The rotating device according to claim 4, characterized in that: The guide mechanism also includes a support plate, which is arranged below the chassis; the rotating mechanism also includes a pulley assembly, which includes a mounting seat and a ball disposed on the mounting seat and rotatable relative to the mounting seat, the mounting seat is fixed on the chassis, and the ball abuts against the support plate.

7. The rotating device according to claim 1, characterized in that: The central shaft assembly comprises: An axis, the axis comprising a first cylindrical segment, a second cylindrical segment and a third cylindrical segment connected in sequence, the diameter of the first cylindrical segment is greater than the diameter of the second cylindrical segment, the diameter of the second cylindrical segment is greater than the diameter of the third cylindrical segment, the turntable is connected to the first cylindrical segment, and the connecting rod mechanism is connected to the third cylindrical segment; An axial outer steel cylinder is sleeved on the outer circumference of the second cylindrical segment, and the inner diameter of the axial outer steel cylinder is smaller than the diameter of the first cylindrical segment and larger than the diameter of the second cylindrical segment; The axial outer rubber cylinder is sleeved on the outer periphery of the axial outer steel cylinder. The end of the axial outer rubber cylinder facing the first cylindrical section is provided with a step, and the chassis assembly is arranged on the step.

8. The rotating device according to claim 1, characterized in that: The first connecting rod comprises a stainless steel first connecting rod; and / or the second connecting rod comprises a stainless steel second connecting rod.

9. A sofa, characterized in that: The invention comprises a rotating device as described in any one of claims 1 to 8.

10. The sofa according to claim 9, characterized in that: The sofa further comprises a seat cushion support, which comprises a seat frame and a back frame, wherein the back frame is arranged on the seat frame, and an angle is formed between the seat frame and the back frame.