A sofa with a rotatable backrest

Abstract

The utility model relates to the technical field of furniture, specifically relates to a sofa with rotatable backrest, which comprises a seat surface module, a rotating mechanism connected with the seat surface module, a backrest module connected with the rotating mechanism, the rotating mechanism comprises a base connected with the seat surface module, a support frame arranged on the base, a connecting table connected with the support frame, a rotating rod rotatably connected with the connecting table, a connecting seat arranged at the top of the rotating rod, the bottom of the rotating rod passes through the connecting table and extends below the connecting table, and the connecting seat is connected with the backrest module, the utility model sets up the rotating mechanism on the seat surface module, the backrest module is connected with the rotating mechanism, so that the backrest module can rotate relative to the seat surface module, the user can quickly and conveniently adjust the position of the backrest module, flexibly adapts to different use scenes, and satisfies different functional requirements of the user.

Description

Technical Field

[0001] This utility model relates to the field of furniture technology, specifically to a sofa with a rotatable backrest. Background Technology

[0002] Furniture refers to various appliances and equipment used in interior spaces (such as residences, offices, hotels, etc.), serving functions such as storage, providing seating, support, or decoration. There are many types of furniture, with common items including sofas, coffee tables, dining tables, and cabinets. A sofa is a cushioned chair with multiple or single seats, used for sitting or reclining, providing a comfortable and relaxing space. It is often used in living rooms or offices. With changing consumer attitudes, people are no longer fixated on traditional, fixed sofa arrangements, but rather prefer to flexibly adjust the sofa's position and orientation according to the spatial layout or functional needs. Common sofas are mainly classified by materials, including leather sofas, fabric sofas, wooden sofas, and rattan sofas. The seat and backrest of these common sofas are mostly a single structure, meaning the backrest is fixed to the back of the seat, making it difficult to flexibly adjust the backrest position according to needs. Although some sofas with adjustable backrests have appeared on the market, these usually only adjust the backrest's tilt angle, not its position. Utility Model Content

[0003] To address the aforementioned problems, this invention provides a sofa with a rotatable backrest.

[0004] This utility model is achieved using the following solution: A sofa with a rotatable backrest includes a seat module, a rotating mechanism connected to the seat module, and a backrest module connected to the rotating mechanism. The rotating mechanism includes a base connected to the seat module, a support frame disposed on the base, a connecting platform connected to the support frame, a rotating rod rotatably connected to the connecting platform, and a connecting seat disposed at the top of the rotating rod. The bottom of the rotating rod passes through the connecting platform and extends below the connecting platform. The connecting seat is connected to the backrest module.

[0005] Furthermore, the top surface of the connecting platform is provided with an angle limiting block, and the outer wall of the rotating rod is provided with a locking block that cooperates with the angle limiting block.

[0006] Furthermore, two angle limiting blocks are provided, including a first limiting block and a second limiting block. When the rotating rod rotates, the locking block moves between the first limiting block and the second limiting block.

[0007] Furthermore, taking the point where the axis of the rotating rod intersects the connecting platform as the vertex, the included angle between the point where the first limiting block contacts the locking block and the point where the second limiting block contacts the locking block is 90°.

[0008] Furthermore, a base platform is provided on the base, and the lower end of the rotating rod is connected to the base platform.

[0009] Furthermore, the top surface of the base is inclined relative to the base, and the axis of the rotating rod is perpendicular to the top surface of the base.

[0010] Furthermore, the backrest module includes two parallel side plates and several connecting plates connected between the two side plates, and the connecting seat is connected to one of the connecting plates.

[0011] Furthermore, the side plate is in the shape of an isosceles trapezoid.

[0012] Furthermore, the seat module includes a seat frame, a fixed base connected to the seat frame, and a reinforcing frame disposed inside the seat frame, with the base connected to the fixed base.

[0013] Compared with the prior art, the present invention has the following advantages: This invention features a rotating mechanism on the seat module, with the backrest module connected to the rotating mechanism. This allows the backrest module to rotate relative to the seat module, enabling users to quickly and easily adjust the position of the backrest module to flexibly adapt to different usage scenarios and meet various functional needs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a sofa with a rotatable backrest, provided as an embodiment of the present utility model.

[0015] Figure 2 This is a schematic diagram showing the connection between the backrest module and the rotating mechanism in an embodiment of the present invention.

[0016] Figure 3 This is a schematic diagram of the rotating mechanism according to an embodiment of the present invention.

[0017] Figure 4 This is a schematic diagram of another state of an embodiment of the present utility model.

[0018] The image includes: Seat module 1, seat frame 11, fixed seat 12, reinforcing frame 13, rotating mechanism 2, base 21, support frame 22, connecting platform 23, rotating rod 24, connecting seat 25, angle limiting block 26, first limiting block 26a, second limiting block 26b, locking block 27, base platform 28, backrest module 3, side plate 31, connecting plate 32. Detailed Implementation

[0019] To facilitate understanding of this utility model by those skilled in the art, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0020] Example 1

[0021] Reference Figures 1 to 4 This utility model provides a sofa with a rotatable backrest, including a seat module 1, a rotating mechanism 2 connected to the seat module 1, and a backrest module 3 connected to the rotating mechanism 2. Under the action of the rotating mechanism 2, the backrest can rotate relative to the seat module 1, changing the position and orientation of the backrest module 3.

[0022] The rotating mechanism 2 includes a base 21 connected to the seat module 1, a support frame 22 disposed on the base 21, a connecting platform 23 connected to the support frame 22, a rotating rod 24 rotatably connected to the connecting platform 23, and a connecting seat 25 disposed on the top of the rotating rod 24. The bottom of the rotating rod 24 passes through the connecting platform 23 and extends below the connecting platform 23. The connecting seat 25 is connected to the backrest module 3. A device can be disposed between the rotating rod 24 and the connecting platform 23 to increase damping and keep the backrest module 3 stable when stationary. The device can be a rotary damper, an O-ring, a felt gasket, etc.

[0023] An angle limiting block 26 is provided on the top surface of the connecting platform 23, and a locking block 27 that cooperates with the angle limiting block 26 is provided on the outer wall of the rotating rod 24. During rotation, the rotating rod 24 stops rotating when the locking block 27 and the angle limiting block 26 come into contact, thereby constraining the rotation angle of the rotating rod 24.

[0024] A base 28 is provided on the base 21, and the lower end of the rotating rod 24 is connected to the base 28. The rotating rod 24 is connected to both the connecting platform 23 and the base 28, ensuring the stability of the rotating rod 24 and thus making it more stable during rotation.

[0025] The backrest module 3 includes two parallel side plates 31 and a plurality of connecting plates 32 connecting the two side plates 31. The side plates 31 and the connecting plates 32 together form a stable backrest frame. The connecting seat 25 is connected to one of the connecting plates 32. In this embodiment, the connecting seat 25 is connected to the lowermost connecting plate 32 near one of the side plates 31.

[0026] In this embodiment, the side plate 31 is in the shape of an isosceles trapezoid, so that the front and back sides of the backrest module 3 are the same. After the backrest module 3 is rotated, the side facing the middle of the seat module 1 will not change (ignoring the deformation caused by the external elastic material, surface cloth or leather cover and other structures).

[0027] The seat module 1 includes a seat frame 11, a fixed base 12 connected to the seat frame 11, and a reinforcing frame 13 disposed inside the seat frame 11. The base 21 is connected to the fixed base 12. In this embodiment, the seat frame 11 is generally rectangular, and the fixed base 12 is disposed at one of the corners. Because the base 21 of the rotating mechanism 2 is connected to the fixed base 12, the backrest module 3 can rotate between its long side and short side, changing the position of the backrest module 3.

[0028] Traditional sofa backrests are usually fixed to the long side (excluding single-seat sofas), which limits their use. In this invention, the backrest module 3 can rotate between the long and short sides, meeting different scenario needs. For example, when the backrest module 3 is rotated to the short side, it does not occupy the width of the seat module 1, allowing it to be used as a bed, with the backrest module 3 essentially forming a headboard. Alternatively, when used to create a corner sofa, rotating the backrest module 3 to the short side allows the short side of the sofa to be the front, forming an L-shape suitable for corner placement. Furthermore, multiple backrest modules 3 can be used. For instance, if the length of the seat module 1 is twice the length of the backrest module 3, two backrest modules 3 can be used, each connecting to a corner on the same side. Example 2

[0029] Reference Figure 1 - 4. A sofa with a rotatable backrest, comprising a seat module 1, a rotating mechanism 2 connected to the seat module 1, and a backrest module 3 connected to the rotating mechanism 2. Under the action of the rotating mechanism 2, the backrest can rotate relative to the seat module 1, changing the position and orientation of the backrest module 3.

[0030] The rotating mechanism 2 includes a base 21 connected to the seat module 1, a support frame 22 disposed on the base 21, a connecting platform 23 connected to the support frame 22, a rotating rod 24 rotatably connected to the connecting platform 23, and a connecting seat 25 disposed on the top of the rotating rod 24. The bottom of the rotating rod 24 passes through the connecting platform 23 and extends below the connecting platform 23. The connecting seat 25 is connected to the backrest module 3. A device can be disposed between the rotating rod 24 and the connecting platform 23 to increase damping and keep the backrest module 3 stable when stationary. The device can be a rotary damper, an O-ring, a felt gasket, etc.

[0031] An angle limiting block 26 is provided on the top surface of the connecting platform 23, and a locking block 27 that cooperates with the angle limiting block 26 is provided on the outer wall of the rotating rod 24. During rotation, the rotating rod 24 stops rotating when the locking block 27 and the angle limiting block 26 come into contact, thereby constraining the rotation angle of the rotating rod 24.

[0032] Two angle limiting blocks 26 are provided, including a first limiting block 26a and a second limiting block 26b. When the rotating rod 24 rotates, the locking block 27 moves between the first limiting block 26a and the second limiting block 26b. That is, the first limiting block 26a and the second limiting block 26b can limit the rotation range of the rotating rod 24 within the range formed by the two, ensuring that the backrest module 3 can rotate flexibly without exceeding the preset angle range.

[0033] The first limiting block 26a and the second limiting block 26b are distributed at a certain angular interval on the top surface of the connecting platform 23. This interval angle can be adaptively set according to the rotation angle required by the backrest module 3 in the product design. Specifically, in this embodiment, with the point where the axis of the rotating rod 24 intersects the connecting platform 23 as the vertex, the included angle between the point where the first limiting block 26a contacts the locking block 27 and the point where the second limiting block 26b contacts the locking block 27 is 90°.

[0034] A base platform 28 is provided on the base 21, and the top surface of the base platform 28 is inclined relative to the base 21. The lower end of the rotating rod 24 is connected to the base platform 28. The rotating rod 24 is connected to both the connecting platform 23 and the base platform 28, ensuring the stability of the rotating rod 24 and thus making it more stable during rotation. The backrest module 3 includes two parallel side plates 31 and several connecting plates 32 connected between the two side plates 31. The side plates 31 and the connecting plates 32 together form a stable backrest frame. The connecting seat 25 is connected to one of the connecting plates 32. In this embodiment, the connecting seat 25 is connected to the lowermost connecting plate 32 near one of the side plates 31.

[0035] In this embodiment, the side plate 31 is in the shape of an isosceles trapezoid, so that the front and back sides of the backrest module 3 are the same. After the backrest module 3 is rotated, the side facing the middle of the seat module 1 will not change (ignoring the deformation caused by the external elastic material, surface cloth or leather cover and other structures).

[0036] The seat module 1 includes a seat frame 11, a fixed base 12 connected to the seat frame 11, and a reinforcing frame 13 disposed inside the seat frame 11. The base 21 is connected to the fixed base 12. In this embodiment, the seat frame 11 is generally rectangular, and the fixed base 12 is disposed at one of the corners. Because the base 21 of the rotating mechanism 2 is connected to the fixed base 12, the backrest module 3 can rotate between its long side and short side, changing the position of the backrest module 3.

[0037] Traditional sofa backrests are usually fixed to the long side (excluding single-seat sofas), which limits their use. In this invention, the backrest module 3 can rotate between the long and short sides, meeting different scenario needs. For example, when the backrest module 3 is rotated to the short side, it does not occupy the width of the seat module 1, allowing it to be used as a bed, with the backrest module 3 essentially forming a headboard. Alternatively, when used to create a corner sofa, rotating the backrest module 3 to the short side allows the short side of the sofa to be the front, forming an L-shape suitable for corner placement. Furthermore, multiple backrest modules 3 can be used. For instance, if the length of the seat module 1 is twice the length of the backrest module 3, two backrest modules 3 can be used, each connecting to a corner on the same side.

[0038] Example 3

[0039] In this embodiment, the axis of the rotating rod 24 is perpendicular to the top surface of the base 28. Since the connecting seat 25 is connected to the top surface of the rotating rod 24, the connecting seat 25 is also tilted, which allows the backrest module 3 to tilt as well, better meeting the functional requirements of the sofa. The remaining parts of the structure in this embodiment are the same as in embodiment 1 or embodiment 2.

[0040] In the description of this utility model, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description, and is not intended to 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 utility model.

[0041] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0042] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] Although the description of this utility model has been given in conjunction with the specific embodiments described above, it is obvious to those skilled in the art that many substitutions, modifications, and variations can be made based on the above description. Therefore, all such substitutions, modifications, and variations are included within the scope of the appended claims.

Claims

1. A sofa with a rotatable backrest, characterized in that, The device includes a seat module, a rotating mechanism connected to the seat module, and a backrest module connected to the rotating mechanism. The rotating mechanism includes a base connected to the seat module, a support frame disposed on the base, a connecting platform connected to the support frame, a rotating rod rotatably connected to the connecting platform, and a connecting seat disposed at the top of the rotating rod. The bottom of the rotating rod passes through the connecting platform and extends below the connecting platform. The connecting seat is connected to the backrest module.

2. The sofa with a rotatable backrest according to claim 1, characterized in that, An angle limiting block is provided on the top surface of the connecting platform, and a locking block that cooperates with the angle limiting block is provided on the outer wall of the rotating rod.

3. The sofa with a rotatable backrest according to claim 2, characterized in that, Two angle limiting blocks are provided, including a first limiting block and a second limiting block. When the rotating rod rotates, the locking block moves between the first limiting block and the second limiting block.

4. The sofa with a rotatable backrest according to claim 3, characterized in that, With the point where the axis of the rotating rod intersects the connecting platform as the vertex, the included angle between the point where the first limiting block contacts the locking block and the point where the second limiting block contacts the locking block is 90°.

5. The sofa with a rotatable backrest according to claim 1, characterized in that, A base is provided on the base, and the lower end of the rotating rod is connected to the base.

6. The sofa with a rotatable backrest according to claim 5, characterized in that, The top surface of the base is inclined relative to the base plate, and the axis of the rotating rod is perpendicular to the top surface of the base.

7. The sofa with a rotatable backrest according to claim 1, characterized in that, The backrest module includes two parallel side plates and several connecting plates connecting the two side plates, and the connecting seat is connected to one of the connecting plates.

8. The sofa with a rotatable backrest according to claim 7, characterized in that, The side plate is in the shape of an isosceles trapezoid.

9. The sofa with a rotatable backrest according to claim 1, characterized in that, The seat module includes a seat frame, a fixed base connected to the seat frame, and a reinforcing frame disposed inside the seat frame. The base is connected to the fixed base.

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