Sofa with backrest capable of being overturned in sectional mode

Abstract

The utility model discloses a sofa with a sectional turnover backrest, which comprises a sofa body, an extension frame is arranged at the rear end of the sofa body, a backrest structure is arranged on the extension frame, the backrest structure comprises a mounting frame and a plurality of groups of middle plates, the mounting frame is arranged on the extension frame, and the middle plates are arranged on the extension frame. A middle block is arranged on the mounting frame, and a main body structure of the whole sofa is conveniently formed through the sofa body and the backrest structure; the number of the middle blocks is multiple, the middle plate is arranged between the two middle blocks, the middle plate is provided with a leaning structure, the leaning structure comprises a plurality of first leaning blocks and a plurality of second leaning blocks, the number of the first leaning blocks is multiple, and the number of the second leaning blocks is multiple. The first leaning block and the second leaning block are detachably arranged on the middle plate, the sofa can be conveniently leaned through the leaning structure, and the leaning surface can be switched.

Description

Technical Field

[0001] This utility model relates to the field of sofas, and more specifically, to a sofa with a segmented, folding backrest. Background Technology

[0002] Sofas are very common in people's lives. They are an indispensable piece of furniture, allowing people to rest and entertain themselves, greatly facilitating their lives. Existing sofas are generally composed of wooden frames and leather or cotton upholstery. Because sofas have a fixed frame structure, it is inconvenient to adjust the backrest according to people's needs, thus failing to meet people's additional needs for sofa use. At the same time, because existing sofas have a fixed structure, when the backrest is damaged or needs to be replaced, the backrest structure cannot be replaced. Therefore, when the sofa is damaged, the entire sofa needs to be replaced, which increases people's cost of using the sofa and is also inconvenient for long-term use. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] In view of the problems existing in the prior art, this utility model provides a sofa with a segmented flip-up backrest to solve the technical problems mentioned in the background art.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: a sofa with a segmented flip-up backrest, comprising a sofa body, an extension frame provided at the rear end of the sofa body, a backrest structure provided on the extension frame, the backrest structure comprising a mounting frame and a middle plate, the middle plate being provided in multiple sets, the mounting frame being provided on the extension frame, and a middle block being provided on the mounting frame, thereby facilitating the formation of the main structure of the entire sofa through the sofa body and the backrest structure;

[0007] Multiple intermediate blocks are provided, and an intermediate plate is provided between two intermediate blocks. A leaning structure is provided on the intermediate plate. The leaning structure includes a first leaning block and a second leaning block. Multiple first leaning blocks and multiple second leaning blocks are provided. Both the first leaning blocks and the second leaning blocks are detachably provided on the intermediate plate. The leaning structure facilitates the sofa to be leaned against and the surface to be leaned against can be switched.

[0008] The present invention is further configured such that the extension frame has a first rotating hole, the lower end of the mounting frame has a connecting block, the connecting block has a first rotating column, the first rotating column and the first rotating hole cooperate with each other, and the first rotating column and the first rotating hole are rotatably connected, thereby facilitating the adjustment of the tilt angle of the mounting frame.

[0009] The present invention is further configured such that both the connecting block and the extension frame are provided with positioning holes, and the extension frame is provided with multiple positioning holes. The positioning holes provided on the extension frame are bolted to the positioning holes provided on the connecting block, thereby fixing the mounting frame after the tilt angle of the mounting frame is adjusted.

[0010] The present invention is further configured such that a second rotating column is fixedly provided at one end of the intermediate block, and a second rotating hole is provided on the mounting frame. The second rotating column and the second rotating hole cooperate with each other and are rotatably connected, thereby facilitating the rotation of the intermediate block and realizing the flipping of different surfaces of the intermediate plate. Damping is provided between the second rotating column and the second rotating hole.

[0011] The present invention is further configured such that a mating groove is provided at the other end of the intermediate block, and mating blocks are fixedly provided at both ends of the intermediate plate. The mating groove and the mating blocks cooperate with each other. A blocking block is provided on the intermediate block, and multiple blocking blocks are provided, so as to block the mating blocks through the blocking blocks.

[0012] The present invention is further configured such that extension plates are fixedly provided at both ends of the blocking block, and a notch is provided on the middle block, the notch and the extension plate cooperating with each other, thereby facilitating the installation of the blocking block.

[0013] The present invention is further configured such that mounting holes are provided at the opening positions of the notch on the extension plate and the intermediate block, and multiple mounting holes are provided, and the mounting holes provided in the mounting holes are provided with threads. The mounting holes provided in the extension plate and the mounting holes provided in the intermediate block are bolted together, thereby facilitating the fixing of the blocking block.

[0014] The present invention is further configured such that a locking block is fixedly provided on both the first and second support blocks, a locking hole is provided on the middle plate, and multiple locking blocks and locking holes are provided. The locking blocks and locking holes are engaged and connected. A heat dissipation hole is provided on the first support block, and multiple heat dissipation holes are provided to facilitate ventilation and heat dissipation of the first support block. The interior of the second support block is filled with a soft material similar to that of a regular sofa.

[0015] (III) Beneficial Effects

[0016] Compared with the prior art, this utility model provides a sofa with a segmented, folding backrest, which has the following advantages:

[0017] 1. This utility model sets up a backrest structure and a leaning structure, which together form the backrest of the entire sofa. When it is necessary to adjust the tilt angle of the sofa backrest, the tilt angle of the cover plate mounting frame is adjusted by rotating the extension frame and the connecting block. The tilt angle is fixed by the matching of the positioning holes on the connecting block and the different positioning holes on the extension frame, so as to facilitate the adjustment of the backrest according to the needs of use.

[0018] 2. This utility model sets up a rotatable connection between the mounting frame and the middle block. When the support structure is flipped, the cooperation of the second rotating column and the second rotating hole realizes the switching between the first support block and the second support block. The damping of the second rotating column and the second rotating hole keeps the middle plate in its current position, so that the first support block can be used when coolness is needed, and the second support block can be used when warmth is needed, thus facilitating the use of the entire sofa.

[0019] 3. This utility model, by setting a mating block and a mating groove, allows the middle plate to be installed or disassembled when the bolts in the mounting holes are removed, thereby removing the blocking block from the middle plate. This prevents the blocking block from obstructing the middle plate and the mating block, allowing the mating block to be removed from the mating groove on the middle plate, thus enabling the disassembly of the middle plate. The engagement of the locking holes and locking blocks facilitates the disassembly and installation of the first or second backrest block, thereby facilitating the installation and replacement of the entire backrest and making the sofa more convenient to use. Attached Figure Description

[0020] Figure 1 A schematic diagram of the overall structure of a sofa with a segmented, folding backrest;

[0021] Figure 2 This is a schematic diagram of the mounting frame and the sofa body of a sofa with a segmented, folding backrest.

[0022] Figure 3 This is a schematic diagram of the mounting frame and the middle panel of a sofa with a segmented, folding backrest.

[0023] Figure 4 This is a schematic diagram of the interlocking structure of the middle block and the middle panel of a sofa with a segmented, folding backrest.

[0024] Figure 5 This is a schematic diagram of the backrest structure of a sofa with a segmented, folding backrest.

[0025] In the diagram: 1. Sofa body; 2. Extension frame; 3. Mounting frame; 4. Middle plate; 5. Middle block; 6. First backrest block; 7. Second backrest block; 8. First rotating hole; 9. Connecting block; 10. First rotating column; 11. Positioning hole; 12. Second rotating column; 13. Second rotating hole; 14. Mating groove; 15. Mating block; 16. Blocking block; 17. Extension plate; 18. Notch; 19. Mounting hole; 20. Locking block; 21. Locking hole; 22. Ventilation hole. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0027] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0028] In this utility model, unless otherwise stated, the orientations used, such as "up" and "down", usually refer to the direction shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" usually refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not used to limit this utility model.

[0029] Please see Figure 1-5 A sofa with a segmented flip-up backrest includes a sofa body 1, an extension frame 2 at the rear end of the sofa body 1, a backrest structure on the extension frame 2, the backrest structure including a mounting frame 3 and a middle plate 4, the middle plate 4 being provided in multiple sets, the mounting frame 3 being provided on the extension frame 2, and a middle block 5 being provided on the mounting frame 3.

[0030] Multiple intermediate blocks 5 are provided, and an intermediate plate 4 is provided between two intermediate blocks 5. An abutment structure is provided on the intermediate plate 4. The abutment structure includes a first abutment block 6 and a second abutment block 7. Multiple first abutment blocks 6 and multiple second abutment blocks 7 are provided. Both the first abutment blocks 6 and the second abutment blocks 7 can be detachably provided on the intermediate plate 4.

[0031] In this embodiment, the sofa body 1 and the backrest structure facilitate the formation of the main structure of the entire sofa.

[0032] More specifically, the reclining structure makes it easy to lean against the sofa and switch the surface to lean against.

[0033] Please see Figures 1-5As one implementation method for using the backrest: The extension frame 2 has a first rotating hole 8; the lower end of the mounting frame 3 has a connecting block 9; the connecting block 9 has a first rotating column 10; the first rotating column 10 and the first rotating hole 8 cooperate with each other and are rotatably connected; both the connecting block 9 and the extension frame 2 have positioning holes 11; the extension frame 2 has multiple positioning holes 11, and each positioning hole 11 has a thread; the positioning holes 11 on the extension frame 2 and the positioning holes 11 on the connecting block 9 are bolted together; one end of the intermediate block 5 has a second rotating column 12 fixedly mounted; the mounting frame 3 has a second rotating hole 13; the second rotating column 12 and the second rotating hole 13 cooperate with each other and are rotatably connected; the other end of the intermediate block 5 has a mating groove 14; and both ends of the intermediate plate 4... Each block is fixedly provided with a mating block 15, and the mating groove 14 and the mating block 15 are mutually mated. The middle block 5 is provided with a blocking block 16, and there are multiple blocking blocks 16. Both ends of the blocking block 16 are fixedly provided with an extension plate 17. The middle block 5 is provided with a notch 18, and the notch 18 and the extension plate 17 are mutually mated. The extension plate 17 and the middle block 5 are provided with mounting holes 19 at the opening position of the notch 18. There are multiple mounting holes 19, and the mounting holes 19 are provided with threads. The mounting holes 19 on the extension plate 17 and the mounting holes 19 on the middle block 5 are bolted together. The first support block 6 and the second support block 7 are both fixedly provided with a locking block 20. The middle plate 4 is provided with a locking hole 21, and there are multiple locking blocks 20 and locking holes 21. The locking blocks 20 and locking holes 21 are engaged and connected. The first support block 6 is provided with a heat dissipation hole 22, and there are multiple heat dissipation holes 22.

[0034] Specifically, when the tilt angle of the sofa back needs to be adjusted, the tilt angle of the cover mounting frame 3 is adjusted by the rotational connection between the extension frame 2 and the connecting block 9. The required angle is fixed by the engagement of the positioning holes 11 on the connecting block 9 and different positioning holes 11 on the extension frame 2. When the backrest structure is flipped, the engagement of the second rotating column 12 and the second rotating hole 13 allows switching between the first backrest block 6 and the second backrest block 7. The damping of the second rotating column 12 and the second rotating hole 13 keeps the middle plate 4 in its current position. The first backrest block 6 is convenient to use when coolness is needed, and the second backrest block 7 is used when warmth is needed. When the middle plate 4 needs to be installed or removed, the bolt in the mounting hole 19 is removed, thereby removing the blocking block 16 from the middle plate 5. This prevents the blocking block 16 from blocking the middle plate 4 and the mating block 15, allowing the mating block 15 to be removed from the mating groove 14 on the middle plate 5, thus enabling the disassembly of the middle plate 4. The engagement of the locking hole 21 and the locking block 20 facilitates the disassembly and installation of the first backrest block 6 or the second backrest block 7, thereby facilitating the installation and replacement of the entire backrest.

[0035] In summary, when using it as a whole:

[0036] When the tilt angle of the sofa back needs to be adjusted, the tilt angle of the cover mounting frame 3 is adjusted by rotating the extension frame 2 and the connecting block 9. The tilt angle is adjusted according to the required angle by the cooperation between the positioning holes 11 on the connecting block 9 and the different positioning holes 11 on the extension frame 2, so as to fix the position of the entire backrest after tilting.

[0037] When the backrest structure is flipped, the first backrest block 6 or the second backrest block 7 can be switched through the cooperation of the second rotating column 12 and the second rotating hole 13. The damping of the second rotating column 12 and the second rotating hole 13 keeps the middle plate 4 in its current position, so that the first backrest block 6 can be used when coolness is needed, and the second backrest block 7 can be used when warmth is needed. When the middle plate 4 needs to be installed or removed, the bolt in the mounting hole 19 is removed, thereby removing the blocking block 16 from the middle plate 5, so that the blocking block 16 no longer obstructs the middle plate 4 and the mating block 15, thereby removing the mating block 15 from the mating groove 14 opened on the middle plate 5, thereby realizing the disassembly of the middle plate 4. The cooperation of the locking hole 21 and the locking block 20 facilitates the disassembly and installation of the first backrest block 6 or the second backrest block 7, thereby facilitating the installation and replacement of the entire backrest.

[0038] Of all the solutions mentioned above, those involving the connection between two components can be selected according to the actual situation, such as welding, bolt and nut connection, bolt or screw connection, or other known connection methods, which will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A sofa with backrest segmented overturning, comprising a sofa body (1), characterized in that: The sofa body (1) has an extension frame (2) at its rear end. The extension frame (2) has a backrest structure. The backrest structure includes a mounting frame (3) and a middle plate (4). The middle plate (4) has multiple sets. The mounting frame (3) is located on the extension frame (2). The mounting frame (3) has a middle block (5). Multiple intermediate blocks (5) are provided, and an intermediate plate (4) is provided between two intermediate blocks (5). An abutment structure is provided on the intermediate plate (4). The abutment structure includes a first abutment block (6) and a second abutment block (7). Multiple first abutment blocks (6) and second abutment blocks (7) are provided. Both the first abutment blocks (6) and the second abutment blocks (7) can be detachably provided on the intermediate plate (4).

2. A back sectionally inverted sofa according to claim 1, characterized in that: The extension frame (2) is provided with a first rotating hole (8), and the lower end of the mounting frame (3) is provided with a connecting block (9). The connecting block (9) is provided with a first rotating column (10). The first rotating column (10) and the first rotating hole (8) cooperate with each other and are rotatably connected.

3. A back sectionally inverted sofa according to claim 2, characterised in that: Both the connecting block (9) and the extension frame (2) are provided with positioning holes (11). Multiple positioning holes (11) are provided on the extension frame (2). The positioning holes (11) are provided with threads. The positioning holes (11) on the extension frame (2) and the positioning holes (11) on the connecting block (9) are bolted together.

4. A sofa with a segmented, folding backrest according to claim 1, characterized in that: A second rotating column (12) is fixedly provided at one end of the intermediate block (5), and a second rotating hole (13) is provided on the mounting frame (3). The second rotating column (12) and the second rotating hole (13) cooperate with each other and are rotatably connected.

5. A sofa with a segmented, folding backrest according to claim 1, characterized in that: The other end of the intermediate block (5) is provided with a mating groove (14), and both ends of the intermediate plate (4) are fixedly provided with mating blocks (15). The mating groove (14) and the mating block (15) cooperate with each other. The intermediate block (5) is provided with a blocking block (16), and there are multiple blocking blocks (16).

6. A sofa with a segmented, folding backrest according to claim 5, characterized in that: Both ends of the blocking block (16) are fixedly provided with extension plates (17), and the middle block (5) is provided with a notch (18), which cooperates with the extension plate (17).

7. A sofa with a segmented, folding backrest according to claim 6, characterized in that: Mounting holes (19) are provided on the extension plate (17) and the intermediate block (5) at the opening position of the notch (18). There are multiple mounting holes (19). The mounting holes (19) are threaded. The mounting holes (19) on the extension plate (17) and the mounting holes (19) on the intermediate block (5) are bolted together.

8. A sofa with a segmented, folding backrest according to claim 1, characterized in that: The first support block (6) and the second support block (7) are both fixedly provided with a locking block (20), and the intermediate plate (4) is provided with a locking hole (21). The locking block (20) and the locking hole (21) are provided in multiple ways. The locking block (20) and the locking hole (21) are engaged and connected. The first support block (6) is provided with a heat dissipation hole (22), and the heat dissipation hole (22) is provided in multiple ways.

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