A sofa that can be packed flat

Abstract

The utility model discloses a sofa of flat packing, including base, base includes at least two base sections, and at least two base sections have unfolded state and folding state, support framework includes backrest support part and handrail support part, and backrest support part and handrail support part can detachably be connected on at least two base sections in unfolded state, sofa soft body includes backrest part and handrail part. Through the collapsible design of base, the detachable connection of support framework and the plug-in structure of sofa soft body built-in cavity, realized the flat packing and convenient assembly of sofa. In the stage of packing and transportation, base folding reduces length, and support framework is detached as an independent component, and sofa soft body can be vacuum compressed or curled, further with the help of cavity reduces compression volume, makes the overall packing volume compared with traditional sofa to reduce, reduces the logistics warehousing cost, and is convenient through the narrow corridor and elevator, solves the problem of traditional sofa volume huge, and the inhouse difficulty.

Description

Technical Field

[0001] This utility model relates to the field of furniture and household goods technology, and in particular to a sofa that can be flattened and packaged. Background Technology

[0002] With the popularization of e-commerce and increasingly compact urban living spaces, consumers have placed higher demands on the portability, ease of transportation and installation of large furniture, especially sofas.

[0003] However, traditional sofas have inherent design and structural flaws that make them difficult to meet modern consumer demands. Firstly, traditional sofas typically use a one-piece frame structure, with the base, backrest, and armrests fixed together, resulting in a bulky and non-disassembly-compatible overall structure. This also leads to a massive packaged size, significantly increasing logistics and warehousing costs, and posing considerable difficulties for users when moving, navigating hallways, or entering their homes.

[0004] To address this issue, some compressible sofas have emerged on the market, but their improvements are often insufficient. For example, some solutions only compress the seat cushions without a frame, while the backrests and armrests, with their rigid support frames, remain bulky, single components, failing to effectively reduce packaging volume. Furthermore, the assembly process for existing detachable sofas is often complex, requiring users to use multiple tools and follow cumbersome steps, resulting in a poor user experience.

[0005] Therefore, there is an urgent need in this field for a new sofa design solution to solve the problems of large packaging volume and inconvenient transportation and installation of existing sofas. Utility Model Content

[0006] The main purpose of this utility model is to provide a sofa that can be flattened and packaged to solve the above-mentioned technical problems.

[0007] This utility model provides a sofa that can be flattened and packaged, comprising: A base, the base comprising at least two base segments, the at least two base segments having an unfolded state and a folded state; A support frame, the support frame including a backrest support and an armrest support, the backrest support and the armrest support being detachably connected to the at least two base sections in the unfolded state; A sofa upholstery, comprising a backrest and armrests; The backrest has a first cavity with a first opening on one surface, and the backrest support is disposed in the first cavity through the first opening; the armrest has a second cavity with a second opening on one surface, and the armrest support is disposed in the second cavity through the second opening.

[0008] Each of the at least two base segments includes a base plate and a surrounding wall extending downward along the periphery of the base plate; the surrounding wall is configured such that when the at least two base segments are in the folded state, the surrounding wall together form an accommodating cavity.

[0009] The at least two base segments include a first base segment and a second base segment that are connected to each other.

[0010] The first base section and the second base section are rotatably connected by a hinge mechanism.

[0011] A support component is provided at the bottom of the connection between the first base segment and the second base segment, and the support component is connected to the first base segment and the second base segment respectively.

[0012] The bottom corners of both the first base segment and the second base segment are detachably connected to a first support leg; the support assembly includes a connecting plate and a second support leg, the connecting plate being detachably connected to the first base segment and the second base segment respectively, and the second support leg being connected to the connecting plate.

[0013] Both the backrest support and the armrest support are U-shaped frame structures.

[0014] The backrest support is detachably connected to the rear of both the first base section and the second base section; the armrest support is detachably connected to the left of both the first base section and the right of both the second base section.

[0015] The rear surfaces of the first base section and the second base section are provided with first connecting holes, and the backrest support is inserted into the corresponding first connecting hole and fixedly connected to the first connecting hole by fasteners.

[0016] The left side of the first base section and the right side of the second base section are provided with second connecting holes. The handrail support is inserted into the corresponding second connecting hole and fixedly connected to the second connecting hole by fasteners.

[0017] The first opening is formed on the bottom surface of the backrest, and the second opening is formed on the bottom surface of the armrest.

[0018] The sofa upholstery also includes a cushion portion, which is detachably connected to the top of the at least two base sections.

[0019] The beneficial technical effects of this utility model are as follows: Through the foldable design of the base, the detachable connection of the support frame, and the insertable structure of the sofa upholstery's internal cavity, the sofa achieves flat packaging and convenient assembly. Specifically, during the packaging and transportation stage, the base is folded to reduce its length, the support frame is disassembled as an independent component, and the sofa upholstery can be vacuum compressed or rolled up. The cavity further reduces the compressed volume, resulting in a smaller overall packaging volume compared to traditional sofas. This lowers logistics and warehousing costs and facilitates passage through narrow corridors and elevators, solving the problem of traditional sofas being bulky and difficult to transport. During the user assembly stage, assembly can be quickly completed simply by unfolding the base, installing the support frame, and inserting it into the cavity through the opening. No complex tools or cumbersome steps are required. Simultaneously, the support frame provides stable support from within, helping the upholstery return to its original shape, improving the user experience and the overall stability and comfort of the sofa. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 A three-dimensional schematic diagram of a sofa provided for an embodiment of this utility model; Figure 2 This is a front view schematic diagram of a sofa provided for an embodiment of the present utility model; Figure 3 A schematic diagram of the sofa base and its backrest support and armrest support provided in an embodiment of this utility model; Figure 4 A schematic diagram of the sofa base provided in an embodiment of this utility model; Figure 5 A schematic diagram of the sofa from below provided for an embodiment of this utility model; Figure 6 A schematic diagram of the backrest of a sofa provided in an embodiment of this utility model; Figure 7 A schematic cross-sectional view of the backrest of a sofa provided in an embodiment of this utility model; Figure 8 A schematic diagram of the armrest of a sofa provided in an embodiment of this utility model; Figure 9 This is a cross-sectional schematic diagram of the armrest portion of a sofa provided in an embodiment of the present utility model; Figure 10 A schematic diagram of the first base section of the sofa and its first and second connecting holes provided in an embodiment of the present utility model.

[0022] Explanation of reference numerals in the attached figures: In the diagram: 10-base, 14-base plate, 15-enclosure, 16-accommodating cavity, 17-first base section, 18-second base section, 19-hinge mechanism, 21-connecting plate, 22-second support leg, 23-first support leg, 24-first connecting hole, 25-second connecting hole, 31-backrest support, 32-armrest support, 41-backrest, 42-first cavity, 43-first opening, 44-armrest, 45-second cavity, 46-second opening, 47-seat cushion. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0025] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0026] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0027] Please also refer to Figures 1-10This utility model provides a sofa that can be flattened and packaged. It separates and modularly combines the sofa's rigid support structure with its flexible upholstery, allowing for high-proportion volume compression during transportation and creating a flattened packaging form. This effectively solves the problems of traditional sofas, such as their large size, high transportation costs, and difficulty in in-home installation. For the user, the assembly process also becomes extremely simple and quick. The sofa includes a base 10, which comprises at least two base segments having an unfolded state and a folded state; a support frame, which includes a backrest support 31 and an armrest support 32, both of which are detachably connected to the at least two base segments in the unfolded state; and a sofa upholstery, which includes a backrest 41 and armrests 44. The backrest 41 has a first cavity 42 with a first opening 43 on one surface, and the backrest support 31 is disposed within the first cavity 42 through the first opening 43. The armrests 44 have a second cavity 45 with a second opening 46 on one surface, and the armrest support 32 is disposed within the second cavity 45 through the second opening 46.

[0028] In this embodiment, the sofa mainly includes three parts: a base 10, a supporting frame, and sofa upholstery.

[0029] The base 10 is the supporting foundation of the entire sofa. To achieve flat packaging, the base 10 is designed as a foldable structure. Specifically, the base 10 includes at least two base segments. In this embodiment, it can be configured as two base segments. These two base segments are connected by a detachable connection or by hinges, allowing them to switch between an unfolded and folded state. In the folded state, the two base segments can overlap each other, reducing the overall length of the base 10 and facilitating packaging and transportation. In the unfolded state, the two base segments together form a complete, flat, and stable sofa base, used to support the sofa upholstery and frame.

[0030] The support frame provides rigid support for the sofa, ensuring its stable shape and sufficient support during use. The support frame includes a backrest support 31 and armrest support 32. To accommodate the overall detachable, flat packaging design, both the backrest support 31 and armrest support 32 are detachably connected to the unfolded base 10. This means that when assembling the sofa, users can install these support components onto the base 10; and when packaging for transport, they can be easily detached from the base 10 and packaged as independent units.

[0031] The sofa upholstery is the part that comes into direct contact with the user and provides a comfortable seating experience. The sofa upholstery includes a backrest 41 and armrests 44. These upholstered parts are made of flexible materials such as sponge, filling cotton, and an outer covering of fabric or leather, giving them compressible and curlable properties.

[0032] In order to enable the rigid support frame to provide internal support for the flexible sofa upholstery after assembly, while maintaining the overall appearance, this embodiment adopts a "built-in" installation structure: Specifically, a first cavity 42 is pre-formed inside the backrest 41. This first cavity 42 has a first opening 43 formed on one surface of the backrest 41 (e.g., the bottom or side surface of the backrest 41). When assembling the sofa, the user simply inserts the backrest support 31 through the first opening 43 and places it into the first cavity 42. After installation, the backrest support 31 is hidden inside the backrest 41, providing support to the soft backrest 41 from the inside and ensuring good support performance. Furthermore, since the backrest 41 will deform after compression and curling, when the backrest 41 is fitted onto the backrest support 31, the backrest support 31 can also help the backrest 41 quickly return to its original shape.

[0033] Inside the armrest portion 44, a second cavity 45 is provided, and this second cavity 45 also has a second opening 46 formed on one surface of the armrest portion 44 (e.g., the bottom surface of the armrest portion 44). The armrest support portion 32 is inserted into and disposed within the second cavity 45 through the second opening 46. In this way, the armrest support portion 32 can also provide stable structural support for the armrest portion 44 from the inside. Similarly, the armrest support portion 32 can also help the armrest portion 44 return to its original shape.

[0034] Through the above structural design, the flat-pack sofa of this embodiment allows for easy packaging and transportation. The base 10 is foldable, the sofa upholstery can be vacuum-sealed and compressed, and the support frame is an independent component. All three can be compactly housed in a flat packaging box, resulting in a smaller overall packaging volume compared to traditional sofas. This reduces logistics and warehousing costs and allows for easy passage through stairwells and elevators, solving the problem of "difficult entry." In particular, because the sofa upholstery has internal cavities, its volume is even smaller after vacuum sealing compared to a one-piece sofa upholstery. During user assembly, simply unfold the base 10, install the support frame onto the base 10, and insert it into the pre-reserved cavity of the sofa upholstery. The entire process requires no complicated operations, greatly simplifying the assembly process and improving user convenience.

[0035] In one embodiment, each of the at least two base segments includes a base plate 14 and a surrounding wall portion 15 extending downward along the periphery of the base plate 14; the surrounding wall portion 15 is configured such that when the at least two base segments are in the folded state, the surrounding wall portion 15 together form an accommodating cavity 16.

[0036] In this embodiment, to maximize the use of packaging space while achieving a foldable function, each of the at least two base segments has a box-like structure. Specifically, each base segment includes a base plate 14 and a surrounding wall portion 15 extending downward along the periphery of the base plate 14. The base plate 14 constitutes the support surface of the sofa cushion. The surrounding wall portion 15 acts like a frame, extending vertically downward from the edge of the base plate 14.

[0037] Based on the above structure, when the at least two base segments change from an unfolded state to a folded state (for example, the two base segments are folded together), the surrounding wall 15 of one base segment will fit against the surrounding wall 15 of the other base segment. At this time, the surrounding wall 15 of the two base segments will together form a closed accommodating cavity 16. The top and bottom surfaces of the accommodating cavity 16 are respectively formed by the base plates 14 of the two base segments, and the surrounding area is formed by their surrounding wall 15.

[0038] The accommodating cavity 16 can be used to store other loose parts of the sofa. For example, during factory packaging, the disassembled backrest support 31, armrest support 32, and hardware accessories such as fasteners required for installation can be placed together in the accommodating cavity 16. In this way, not only is the internal space created after the base 10 is folded down effectively, achieving highly integrated packaging, but it also ensures that all accessories are safely stored together, avoiding scattering or loss during transportation and handling, further improving the space utilization and packaging convenience of the flat-packable sofa.

[0039] In some embodiments, the enclosure portion 15 may also extend upward along the periphery of the base plate 14, in which case the seat cushion portion needs to be adapted accordingly to ensure that the seat cushion portion can fill the recessed space formed by the enclosure portion 15 itself on the base plate 14.

[0040] In one embodiment, the at least two base segments include a first base segment 17 and a second base segment 18 connected to each other.

[0041] In this embodiment, the at least two base segments specifically include a first base segment 17 and a second base segment 18 that are connected to each other. These two segments can be designed to be the same or similar in structure and size; for example, they can form two parts of a rectangular frame divided along a centerline.

[0042] When the sofa is unfolded (in use), the first base section 17 and the second base section 18 are aligned flat along their connection point to form a complete, flat base 10 with sufficient load-bearing capacity, which is used to support the sofa upholstery and the user.

[0043] In the folded (packaged) state of the sofa, the first base section 17 and the second base section 18 are folded relative to each other via a connecting structure. For example, the first base section 17 can be flipped downwards and overlapped with the second base section 18. This design allows the overall length of the base 10 to be halved, thereby reducing its space occupation during packaging and transportation, achieving the purpose of flat packaging.

[0044] Furthermore, this connection design allows the base 10 to be folded as a single unit without being completely separated, thus simplifying the disassembly and reassembly process. For example, during assembly, the user can simply unfold the folded first base section 17 and second base section 18, completing the installation of the base 10 without the need for any other tools.

[0045] In one embodiment, the first base segment 17 and the second base segment 18 are rotatably connected by a hinge mechanism 19.

[0046] In this embodiment, the hinge mechanism 19 is disposed on the adjacent side of the first base section 17 and the second base section 18. Specifically, the hinge mechanism 19 may be composed of a plurality of metal hinges disposed along the connecting edge of the two base sections.

[0047] The first base segment 17 can pivot relative to the second base segment 18 via the hinge mechanism 19. When unfolding the sofa base 10, the user can rotate the first base segment 17 and the second base segment 18 about the hinge mechanism 19 until they are on the same plane (i.e., unfolded 180 degrees), thus forming a flat and stable integral base 10. When folding the base 10 for packaging or transport, the user can flip one base segment 180 degrees about the hinge mechanism 19, so that it overlaps back-to-back with the other base segment, thereby halving the overall length of the base 10 and achieving a compact folded state.

[0048] This connection method using the hinge mechanism 19 is simple, reliable, and easy to operate. Users can easily unfold or fold the base 10 without using tools, while also ensuring the alignment accuracy and structural stability of the two base sections in the unfolded state.

[0049] In one embodiment, a support component is provided at the bottom of the connection between the first base segment 17 and the second base segment 18, and the support component is connected to the first base segment 17 and the second base segment 18 respectively.

[0050] In this embodiment, the support assembly is disposed at the bottom of the connection between the first base section 17 and the second base section 18. Specifically, the support assembly may be constructed of a metal support structure, such as a bracket spanning the connection.

[0051] The support assembly is connected to the first base segment 17 and the second base segment 18, respectively. This connection can be secured with screws, ensuring that the support assembly is firmly bridged between the two base segments. When the sofa base 10 is in the unfolded state, the support assembly provides additional support from below, preventing the connection point (i.e., the area where the hinge mechanism 19 is located) from deforming or sinking due to weight, thereby maintaining the flatness and stability of the entire base 10.

[0052] In one specific implementation, the support assembly can be installed after the base 10 has been unfolded. When the sofa is being transported, the support assembly can also be placed within the receiving cavity 16 formed by the base 10.

[0053] In one embodiment, the bottom corners of the first base segment 17 and the second base segment 18 are detachably connected to a first support foot 23; the support assembly includes a connecting plate 21 and a second support foot 22, the connecting plate 21 is detachably connected to the first base segment 17 and the second base segment 18 respectively, and the second support foot 22 is connected to the connecting plate 21.

[0054] In this embodiment, to support the four corners of the sofa, connecting structures, such as pre-set threaded holes, are provided at the bottom corners of both the first base section 17 and the second base section 18. Correspondingly, multiple first support feet 23 are provided. Each first support foot 23 has a screw at its top that matches the threaded hole. During assembly, the user simply screws the first support foot 23 into the corresponding threaded hole using the screw to complete the installation. This detachable connection method allows the support feet to be stored independently during packaging.

[0055] To enhance the support in the middle of the base 10, particularly the stability of the hinge connection, the support assembly in this embodiment specifically includes a connecting plate 21 and a second support foot 22. The connecting plate 21 is a long strip of metal plate, long enough to span the connection between the first base section 17 and the second base section 18. After the base 10 is unfolded, the connecting plate 21 is placed at the bottom of the base 10 and detachably fixed to the first base section 17 and the second base section 18 using screws or other fasteners, thereby connecting the two sections into a single unit.

[0056] The second support foot 22 is connected to the bottom of the connecting plate 21. Here, the second support foot 22 can be directly fixed to the connecting plate 21 at the factory, so that the user can directly fix the support assembly to the first base section 17 and the second base section 18.

[0057] Through the above structure, the entire sofa is supported by multiple first support legs 23 distributed at the four corners and a second support leg 22 located in the center, forming a stable and reliable support structure. At the same time, the first support legs 23 and the support components are all detachable, which, together with the foldable feature of the base 10, maximizes flat packaging, making it easy to handle and transport.

[0058] In one embodiment, both the backrest support 31 and the armrest support 32 are U-shaped frame structures.

[0059] In this embodiment, both the backrest support 31 and the armrest support 32 have a U-shaped structure, meaning they each include one horizontal bar and two vertical bars. Taking the backrest support 31 as an example, when it is connected to the first base section 17, the vertical bars are fixedly connected to the first base section 17, with the horizontal bar located on top. Correspondingly, the first cavity 42 inside the backrest 41 is specifically a plate-shaped cavity. The bottom end of this plate-shaped cavity extends to the bottom side of the backrest 41 to form a first opening 43 on the bottom side. The length of the first opening 43 is adapted to the length of the backrest support 31. The height of this plate-shaped cavity is adapted to the height of the backrest support 31, ensuring that the backrest support 31 can be properly accommodated.

[0060] In one embodiment, the backrest support 31 is detachably connected to the rear of both the first base segment 17 and the second base segment 18; the armrest support 32 is detachably connected to the left of the first base segment 17 and the right of the second base segment 18.

[0061] In this embodiment, two backrest support portions 31 are provided. One backrest support portion 31 is detachably connected to the rear of the first base segment 17, and another backrest support portion 31 is also detachably connected to the rear of the second base segment 18. These two backrest support portions 31 together form a complete backrest support surface after installation.

[0062] Similarly, the armrest support 32 also includes two independent support components. One armrest support 32 is detachably connected to the left side of the first base section 17 (i.e., the left side of the sofa, based on the user's orientation when facing the sofa), forming the frame of the left armrest. The other armrest support 32 is detachably connected to the right side of the second base section 18 (i.e., the right side of the sofa), forming the frame of the right armrest.

[0063] This design breaks down the entire support frame into four independent, smaller components (two backrest support sections 31 and two armrest support sections). During packaging, these components can be separated from the base 10 and stored within the accommodating cavity 16 formed by folding the base 10, reducing packaging volume. During assembly, users simply need to install these four components into their corresponding positions on the base 10 (rear, left, and right sides), making the installation logical and easy. This modular, detachable connection method is key to achieving flattened packaging for the sofa.

[0064] In one embodiment, the rear surfaces of the first base section 17 and the second base section 18 are each provided with a first connecting hole 24, and the backrest support 31 is inserted into the corresponding first connecting hole 24 and fixedly connected to the first connecting hole 24 by fasteners.

[0065] In this embodiment, a first connecting hole 24 is provided on the rear surface of the first base segment 17. This first connecting hole 24 includes two interconnected first parts and a second part (not separately labeled in the figure). The diameter of the first part is larger than the diameter of the second part, and the first part is located above the second part, penetrating the rear top surface of the first base segment 17. Simultaneously, the second part penetrates the rear bottom surface of the first base segment 17. Correspondingly, a similar first connecting hole 24 is also provided on the rear surface of the second base segment 18.

[0066] During assembly, a separate backrest support 31 is inserted into the first connecting hole 24 of the first base section 17 through its bottom end, achieving initial insertion and positioning. Here, insertion means that the bottom diameter of the backrest support 31 is smaller than the first part of the first connecting hole 24 but larger than the second part, so that only the first part is inserted, not the second part. The other separate backrest support 31 is inserted into the first connecting hole 24 of the second base section 18, in the same manner. After insertion, fasteners (such as screws or bolts) are used to securely connect the backrest support 31 to the first connecting hole 24. Specifically, a threaded hole can be pre-drilled at the bottom end of the backrest support 31, and a screw can be screwed into the threaded hole from the bottom of the base section through the second part of the first connecting hole 24, thereby achieving fixation.

[0067] This plug-in and fastener connection method ensures the stability of the backrest support 31 after installation. Disassembly allows for easy separation of the components simply by loosening the fasteners, facilitating flat packaging and transportation. Furthermore, pre-plugging ensures that users can quickly position the backrest support 31 correctly, and there is no need to worry about misalignment during the fixing process.

[0068] In one embodiment, the left side of the first base section 17 and the right side of the second base section 18 are both provided with second connecting holes 25, and the armrest support 32 is inserted into the corresponding second connecting hole 25 and fixedly connected to the second connecting hole 25 by fasteners.

[0069] In this embodiment, a second connecting hole 25 is provided on the left surface of the first base segment 17. This second connecting hole 25 includes two interconnected first parts and second parts (not separately labeled in the figure). The diameter of the first part is larger than the diameter of the second part, and the first part is located above the second part, penetrating the rear top surface of the first base segment 17. Simultaneously, the second part penetrates the rear bottom surface of the first base segment 17. A similar second connecting hole 25 is also provided on the right surface of the second base segment 18.

[0070] When assembling the sofa, one independent armrest support 32 is inserted into the second connecting hole 25 of the first base segment 17 through its bottom end, and another independent armrest support 32 is inserted into the second connecting hole 25 of the second base segment 18. This insertion step helps the user to quickly and accurately position the armrest support 32. Here, insertion means that the diameter of the bottom end of the armrest support 32 is smaller than the first part of the second connecting hole 25 and larger than the second part of the second connecting hole 25, so that the bottom end is inserted only into the first part and not the second part.

[0071] After insertion and positioning, the handrail support 32 is fixedly connected to the second connecting hole 25 using fasteners. Specifically, a threaded hole can be pre-drilled at the bottom end of the handrail support 32, and a screw can be screwed into the threaded hole through the second part of the second connecting hole 25 from the bottom of the base section to achieve fixation.

[0072] This plug-in fastener connection structure is easy to operate and reliable, ensuring the stability of the handrail during use while also meeting the requirement of being detachable for flat packaging.

[0073] In one embodiment, the first opening 43 is formed on the bottom surface of the backrest 41, and the second opening 46 is formed on the bottom surface of the armrest portion 44.

[0074] In this embodiment, the first cavity 42 is a plate-shaped cavity whose bottom end extends to the bottom surface of the backrest 41, thereby forming the first opening 43 on the bottom surface. The length and width of the first opening 43 are adapted to the size of the backrest support 31. For example, the length of the first opening 43 may be slightly smaller than the length of the backrest support 31, so that the backrest support 31 can effectively restore its shape after being inserted into the first cavity 42 through the first opening 43. Similarly, the second cavity 45 inside the armrest 44 forms the second opening 46 on the bottom surface of the armrest 44.

[0075] When assembling the sofa, the user first unfolds the base 10 to its unfolded state and connects the backrest support 31 to the rear of the base 10. Then, the user places the backrest 41 above the backrest support 31, with the bottom surface of the backrest 41 facing the backrest support 31, and inserts the backrest support 31 from bottom to top into the first cavity 42 through the first opening 43. After insertion, the backrest support 31 is fully accommodated in the first cavity 42, providing a stable support structure for the backrest 41 from the inside. Similarly, for the armrest 44, the user connects the armrest support 32 to the corresponding side of the base 10 (e.g., the left side of the first base segment 17 or the right side of the second base segment 18), then places the armrest 44 above the armrest support 32, and inserts the armrest support 32 from bottom to top into the second cavity 45 through the second opening 46.

[0076] By placing the first opening 43 and the second opening 46 on the bottom surface of the backrest 41 and the armrest 44, this design ensures ease and concealment in the assembly process. Specifically, the bottom-insertion method allows the first opening 43 and the second opening 46 to be naturally concealed by the sofa base 10 or the ground after the sofa is assembled, thus maintaining the cleanliness and aesthetics of the overall appearance of the sofa and preventing the openings from being exposed and affecting the visual effect. At the same time, this bottom-opening structure helps the sofa upholstery to quickly regain its shape: during transportation, the sofa upholstery can be compressed or curled. During assembly, the backrest support 31 and the armrest support 32 can effectively expand the first cavity 42 and the second cavity 45 by bottom insertion, helping the backrest 41 and the armrest 44 to return to a preset soft and stable supporting state. In addition, this design reduces the difficulty of assembly; users do not need special tools, they only need to align and insert to complete the installation, further improving the portability of the sofa and the user's assembly and disassembly experience.

[0077] In one embodiment, the sofa upholstery further includes a cushion portion 47, which is detachably connected to the top of the at least two base segments.

[0078] In this embodiment, in addition to the aforementioned backrest 41 and armrest 44, the sofa upholstery also includes a seat cushion 47. The seat cushion 47 is placed on the top support surface formed by the first base section 17 and the second base section 18 in the unfolded state.

[0079] In order to achieve a detachable connection between the seat cushion 47 and the base 10 and to prevent it from sliding during use, connectors can be provided at corresponding positions on the top surface of the base 10 and the bottom surface of the seat cushion 47.

[0080] For example, one specific implementation method is to use Velcro. Specifically, multiple hook-and-loop fasteners can be attached along the length or width direction to the top surface of the first base section 17 and the second base section 18, while a loop fastener is sewn onto the corresponding position at the bottom of the seat cushion section 47. During assembly, simply align the seat cushion section 47 and place it on the base 10, allowing the hook-and-loop fasteners to adhere to each other to complete the fixation. This connection method is not only secure but also extremely convenient to disassemble, facilitating independent compression and rolling of the seat cushion section.

[0081] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A sofa that can be flattened and packed, characterized in that, include: A base, the base comprising at least two base segments, the at least two base segments having an unfolded state and a folded state; A support frame, the support frame including a backrest support and an armrest support, the backrest support and the armrest support being detachably connected to the at least two base sections in the unfolded state; A sofa upholstery, comprising a backrest and armrests; The backrest has a first cavity with a first opening on one surface, and the backrest support is disposed in the first cavity through the first opening; the armrest has a second cavity with a second opening on one surface, and the armrest support is disposed in the second cavity through the second opening.

2. The sofa according to claim 1, characterized in that, Each of the at least two base segments includes a base plate and a surrounding wall extending downward along the periphery of the base plate; the surrounding wall is configured such that when the at least two base segments are in the folded state, the surrounding wall together form an accommodating cavity.

3. The sofa according to claim 1, characterized in that, The at least two base segments include a first base segment and a second base segment that are connected to each other.

4. The sofa according to claim 3, characterized in that, The first base section and the second base section are rotatably connected by a hinge mechanism.

5. The sofa according to claim 4, characterized in that, A support component is provided at the bottom of the connection between the first base segment and the second base segment, and the support component is connected to the first base segment and the second base segment respectively.

6. The sofa according to claim 5, characterized in that, The bottom corners of both the first base segment and the second base segment are detachably connected to a first support leg; the support assembly includes a connecting plate and a second support leg, the connecting plate being detachably connected to the first base segment and the second base segment respectively, and the second support leg being connected to the connecting plate.

7. The sofa according to claim 1, characterized in that, Both the backrest support and the armrest support are U-shaped frame structures.

8. The sofa according to claim 3, characterized in that, The backrest support is detachably connected to the rear of both the first base section and the second base section; the armrest support is detachably connected to the left of both the first base section and the right of both the second base section.

9. The sofa according to claim 8, characterized in that, The rear surfaces of the first base section and the second base section are each provided with a first connecting hole. The backrest support is inserted into the corresponding first connecting hole and fixedly connected to the first connecting hole by fasteners.

10. The sofa according to claim 8, characterized in that, The left side of the first base section and the right side of the second base section are both provided with second connecting holes. The armrest support is inserted into the corresponding second connecting hole and fixedly connected to the second connecting hole by fasteners.

11. The sofa according to claim 1, characterized in that, The first opening is formed on the bottom surface of the backrest, and the second opening is formed on the bottom surface of the armrest.

12. The sofa according to claim 1, characterized in that, The sofa upholstery also includes a cushion portion, which is detachably connected to the top of the at least two base segments.

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