A packaging structure for a sofa

Abstract

The utility model discloses a kind of packaging structures for sofa, lower cover subassembly includes lower cover main body and at least one with the side of lower cover main body detachably connected lower cover extension, lower cover main body and lower cover extension jointly form the supporting plane for supporting sofa bottom;Upper cover subassembly includes upper cover main body and at least one with the side of upper cover main body detachably connected upper cover extension, upper cover main body and upper cover extension jointly form the cover plane for covering sofa top;Every corner support member is vertically arranged between lower cover subassembly and upper cover subassembly, for forming load-bearing support between lower cover subassembly and upper cover subassembly.The utility model uses lower cover subassembly, upper cover subassembly and vertically arranged corner support member, and constructs an internal load-bearing frame that is wrapped in the outside of sofa.The framework can effectively bear and transmit vertical load generated when packing stacking, avoid load directly acting on soft sofa body to cause its deformation or damage.

Description

Technical Field

[0001] This utility model relates to the field of furniture packaging technology, and in particular to a packaging structure for sofas. Background Technology

[0002] Currently, upholstered sofas are typically packaged using custom-made cardboard boxes or plastic woven straps. These methods have significant drawbacks: the large size and weight of sofas necessitate a high degree of manual labor in the packaging process; cardboard boxes and woven straps have limited load-bearing capacity, making high-density stacking impossible and requiring substantial storage space; and the inconvenience of using machinery to load and unload logistics vehicles during transport further increases manpower demands. These issues collectively reduce packaging efficiency and increase costs. To address these problems, a new sofa packaging structure is needed. Utility Model Content

[0003] The main purpose of this utility model is to provide a packaging structure for sofas to solve the above-mentioned technical problems.

[0004] The objective of this utility model can be achieved by adopting the following technical solution: A packaging structure for a sofa, comprising: The lower cover assembly includes a lower cover body and at least one lower cover extension member detachably connected to the side of the lower cover body. The lower cover body and the lower cover extension member together form a support plane for supporting the bottom of the sofa. A cover assembly, the cover assembly including a cover body and at least one cover extension detachably connected to the side of the cover body, the cover body and the cover extension together forming a cover plane for covering the top of the sofa; At least four corner support members, each of which is vertically arranged between the lower cover assembly and the upper cover assembly, for forming a load-bearing support between the lower cover assembly and the upper cover assembly; The lower cover assembly has a lower positioning part at the corner position corresponding to each of the corner support members, and the upper cover assembly has an upper positioning part at the position corresponding to each of the corner support members; both ends of each corner support member are respectively matched with the corresponding lower positioning part and the upper positioning part for limiting, so that each corner support member, together with the lower cover assembly and the upper cover assembly, forms an internal load-bearing frame for accommodating the sofa, and the internal load-bearing frame is configured to bear and transmit vertical loads when multiple packaging structures are stacked; An outer covering member that covers the outside of the inner load-bearing frame.

[0005] The lower cover body and the lower cover extension are provided with mutually cooperating buckles and slots, as are the upper cover body and the upper cover extension.

[0006] The buckle is a wedge-shaped protrusion, and the slot is a wedge-shaped groove adapted to the shape of the wedge-shaped protrusion; the buckles are respectively disposed on the lower cover extension and the upper cover extension, and the slots are respectively disposed on the lower cover body and the upper cover body.

[0007] The outer surfaces formed by the lower cover body and the lower cover extension, as well as the outer surfaces formed by the upper cover body and the upper cover extension, are all covered with a reinforcing film layer.

[0008] The reinforcing film layer continuously spans and covers the splicing gap between the lower cover body and the lower cover extension, as well as the splicing gap between the upper cover body and the upper cover extension.

[0009] The lower cover body, the lower cover extension, the upper cover body and / or the upper cover extension are provided with weight-reducing holes, which are through holes or blind holes.

[0010] The lower cover assembly and the upper cover assembly are made of rigid foam plastic.

[0011] Each of the corner support members includes a first support portion and a second support portion; the first support portion and the second support portion are connected to each other and form an included angle, which is an acute angle, a right angle or an obtuse angle.

[0012] The included angle between the first support part and the second support part is a right angle. The lower positioning part and the upper positioning part are both limiting grooves with an L-shaped cross-section. The two ends formed by the first support part and the second support part are respectively inserted into the corresponding limiting grooves.

[0013] The lower positioning part and the upper positioning part are respectively provided on the lower cover assembly and the upper cover assembly as limiting grooves. The cross-sectional shape of the limiting groove is adapted to the cross-sectional shape of the two ends of each corner support member. The two ends of the corner support member are respectively inserted into the corresponding limiting groove.

[0014] The outer covering component is a cardboard box, which is fastened to the outside of the internal load-bearing frame by packing straps.

[0015] The lower cover assembly and the upper cover assembly are provided with guide surfaces that are inclined along the insertion direction of the outer cover member on their outer peripheral sidewalls.

[0016] The beneficial technical effects of this utility model are as follows: This utility model uses a lower cover assembly, an upper cover assembly, and vertically arranged corner support components to jointly construct an independent internal load-bearing frame covering the outside of the sofa. This frame can effectively bear and transfer the vertical load generated during packaging and stacking, avoiding the load from directly acting on the sofa body and causing deformation or damage, thereby achieving high-density stacking of products and significantly improving the utilization rate of storage space. At the same time, through the detachable splicing design of the lower cover body and lower cover extension, and the upper cover body and upper cover extension, the modularization and standardization of the packaging structure are achieved. It can flexibly combine and match sofas of different sizes and specifications, improving the versatility of packaging materials and reducing customization costs. In addition, the regular and rigid units formed by this load-bearing frame provide a basis for mechanized operations, facilitating loading, unloading, and transportation using forklifts and other equipment, effectively solving the problem of low logistics efficiency caused by relying on manual handling of large furniture. Attached Figure Description

[0017] 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.

[0018] Figure 1 A three-dimensional schematic diagram of the upper cover assembly, the lower cover assembly, and the sofa between them in the packaging structure provided for an embodiment of this utility model; Figure 2 A schematic diagram showing the state of the outer covering component being inserted in the packaging structure provided in this embodiment of the utility model; Figure 3 A schematic diagram of the upper cover assembly, the lower cover assembly, and the corner support components between them in the packaging structure provided in this embodiment of the utility model; Figure 4 A three-dimensional schematic diagram of the lower cover assembly in the packaging structure provided in this embodiment of the utility model; Figure 5 A three-dimensional schematic diagram of the lower cover body in the packaging structure provided in this embodiment of the utility model; Figure 6 A three-dimensional schematic diagram of the lower cover extension component in the packaging structure provided in this embodiment of the utility model; Figure 7 Another perspective view of the upper cover assembly, lower cover assembly and the corner support member between them in the packaging structure provided in the embodiment of this utility model; Figure 8 A three-dimensional schematic diagram of the upper cover assembly in the packaging structure provided in this embodiment of the utility model; Figure 9A three-dimensional schematic diagram of the upper cover body in the packaging structure provided in this embodiment of the utility model; Figure 10 A schematic diagram of the upper cover extension in the packaging structure provided in this embodiment of the utility model; Figure 11 A three-dimensional schematic diagram of the corner support component in the packaging structure provided in this embodiment of the utility model; Figure 12 A schematic diagram showing the state of the outer covering component after it has been inserted into the packaging structure provided in this embodiment of the utility model.

[0019] Explanation of reference numerals in the attached figures: In the diagram: 10-Lower cover assembly, 11-Lower cover body, 12-Lower cover extension, 15-Limiting groove, 20-Upper cover assembly, 21-Upper cover body, 22-Upper cover extension, 30-Corner support component, 31-First support part, 32-Second support part, 50-Outer cover component, 61-Wedge-shaped protrusion, 71-Wedge-shaped groove, 80-Reinforcing film layer, 91-Through hole, 92-Blind hole, 100-Packing strap, 110-Guide surface, 200-Sofa. Detailed Implementation

[0020] 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.

[0021] 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.

[0022] 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.

[0023] 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.

[0024] Please also refer to Figures 1-12This utility model embodiment provides a packaging structure for sofas, which mainly solves the problems of difficulty in manual handling, inability to stack high-level structures due to insufficient load-bearing capacity of cardboard boxes, and easy damage to the sofa body during the packaging, transportation, and storage of large upholstered furniture (such as sofas). The packaging structure includes a lower cover assembly 10, which includes a lower cover body 11 and at least one lower cover extension 12 detachably connected to the side of the lower cover body 11. The lower cover body 11 and the lower cover extension 12 together form a supporting plane for supporting the bottom of the sofa 200; an upper cover assembly 20, which includes an upper cover body 21 and at least one upper cover extension 22 detachably connected to the side of the upper cover body 21. The upper cover body 21 and the upper cover extension 22 together form a covering plane for covering the top of the sofa 200; and at least four corner support members 30, each of which is vertically arranged between the lower cover assembly 10 and the upper cover assembly 20, for supporting the sofa 200. The lower cover assembly 10 and the upper cover assembly 20 form a load-bearing support; the lower cover assembly 10 is provided with a lower positioning part at the corner position corresponding to each of the corner support members 30, and the upper cover assembly 20 is provided with an upper positioning part at the position corresponding to each of the corner support members 30; both ends of each corner support member 30 cooperate with the corresponding lower positioning part and the upper positioning part to limit their movement, so that each corner support member 30 cooperates with the lower cover assembly 10 and the upper cover assembly 20 to form an internal load-bearing frame for accommodating the sofa 200, and the internal load-bearing frame is configured to bear and transmit vertical loads when multiple packaging structures are stacked; an outer covering member 50 covers the outside of the internal load-bearing frame.

[0025] In this embodiment, the packaging structure mainly includes a lower cover assembly 10, an upper cover assembly 20, at least four corner support members 30, and an outer cover member 50.

[0026] The lower cover assembly 10 forms the basic structure of the bottom of the packaging. The lower cover assembly 10 is not a single, integrally molded component, but rather adopts a modular design, comprising a lower cover body 11 and at least one lower cover extension 12. The lower cover body 11 corresponds to the core area of ​​the sofa base 200, while the lower cover extension 12 can be selectively installed on the side of the lower cover body 11 according to the specific width or style of the sofa 200 (e.g., whether it has armrests, the width of the armrests, etc.). The lower cover extension 12 and the lower cover body 11 are assembled using a detachable connection, and after assembly, they extend together on a horizontal plane, forming a flat and stable supporting surface for supporting the bottom of the sofa 200. This design allows the same specification of lower cover body 11 to be adapted to different sizes of sofas 200 by using lower cover extensions 12 of different specifications, achieving the universality and standardization of packaging materials.

[0027] The upper cover assembly 20 is disposed on the top of the sofa 200, and its structure is similar to that of the lower cover assembly 10, also including an upper cover body 21 and at least one upper cover extension 22. The upper cover extension 22 is detachably connected to the side of the upper cover body 21, and the two together form a covering plane for completely covering the top of the sofa 200. The upper cover assembly 20 serves to seal and protect the top surface of the sofa 200 in the packaging, and also serves as a load-bearing surface for the goods above when stacked.

[0028] To achieve load-bearing without relying on the sofa 200 itself, this embodiment vertically arranges at least four corner support members 30 between the lower cover assembly 10 and the upper cover assembly 20. These corner support members 30 are located at the four corners of the packaging structure and act as uprights.

[0029] To ensure structural stability, the lower cover assembly 10 has lower positioning parts at the corner positions corresponding to each corner support member 30, and the upper cover assembly 20 has upper positioning parts at the positions corresponding to each corner support member 30. During assembly, the bottom end of each corner support member 30 engages with the lower positioning part of the lower cover assembly 10 for positioning, and the top end engages with the upper positioning part of the upper cover assembly 20 for positioning. Through this upper and lower positioning structure, the corner support members 30 are securely locked between the lower cover assembly 10 and the upper cover assembly 20, thus forming a robust internal load-bearing frame together with the upper cover assembly 20 and the lower cover assembly 10.

[0030] The internal load-bearing frame forms an independent stress-bearing system. When the sofa 200 is housed within this internal load-bearing frame, the sofa 200 body is placed within the protective space of the frame. During storage, stacking, or transportation, the vertical load from the goods above acts directly on the upper cover assembly 20 and is vertically transferred to the lower cover assembly 10 through the corner support members 30, ultimately transferring it to the ground or lower goods, without directly pressing on the sofa 200. This design effectively avoids deformation or damage to the sofa 200 due to stacking pressure, achieving high-density stacking.

[0031] The outer covering component 50 covers the outside of the aforementioned internal load-bearing frame. The outer covering component 50 primarily serves to prevent dust and dirt accumulation and to provide a visible display surface. It encloses the internal load-bearing frame and the sofa 200 contained within, forming a complete packaging unit. Since the internal structure already has an independent load-bearing frame, the outer covering component 50 no longer bears the main load-bearing function; therefore, relatively thin materials can be used, reducing the overall packaging cost.

[0032] In summary, this embodiment achieves flexible packaging of sofas 200 of different specifications through modular upper and lower cover splicing design and independent internal load-bearing frame design, and significantly improves the load-bearing capacity and pressure resistance of the packaging structure, facilitating mechanized handling and high-level stacking storage.

[0033] In this embodiment, when using the packaging structure, firstly, the lower cover body 11 and the lower cover extension 12 are selected and combined according to the size of the sofa 200 to form the lower cover assembly 10, and the sofa 200 is placed on the supporting plane formed by the lower cover assembly 10; then, the corner support member 30 is installed at the corner position of the lower cover assembly 10, so that its lower end cooperates with the lower positioning part for limitation; next, the upper cover body 21 and the upper cover extension 22 are combined to form the upper cover assembly 20, which is covered on the top of the sofa 200, and the upper end of the corner support member 30 cooperates with the upper positioning part for limitation, forming the internal load-bearing frame; finally, the outer covering member 50 is covered. This packaging structure, through modular design, can achieve automated or semi-automated assembly, reduce reliance on manpower, improve efficiency, and solve the problems of traditional packaging that cannot be stacked and is inconvenient to use mechanical equipment.

[0034] In one embodiment, the lower cover body 11 and the lower cover extension 12, as well as the upper cover body 21 and the upper cover extension 22, are provided with mutually cooperating buckles and slots.

[0035] In this embodiment, interlocking connection structures are formed on the sidewalls of the lower cover body 11 and the lower cover extension 12 where they meet. One component (e.g., the lower cover extension) has a protruding buckle structure on its side, while the corresponding side of the other component (e.g., the lower cover body) has an inwardly recessed slot structure. In practice, the positions of the buckle and the slot can be interchanged.

[0036] The connection structure of the upper cover assembly 20 adopts the same design logic as the lower cover assembly 10. The mating point between the upper cover body 21 and the upper cover extension 22 is also connected by the cooperation of buckles and slots.

[0037] During packaging and assembly, operators or robotic arms simply align the clips or slots on the extension components with the corresponding structures on the main body, inserting or sliding them in to complete the assembly. Once the clips are fully engaged in the slots, the mechanical action restricts the horizontal separation of the components, locking the separated modules together to form a complete cover structure. This design eliminates the need for additional fasteners such as screws or adhesives (structural adhesive) for initial fixation, greatly simplifying the on-site assembly process, improving packaging efficiency, and ensuring that the modules will not easily detach during subsequent use.

[0038] In this embodiment, the lower cover assembly 10 is formed by splicing the lower cover body 11 and the lower cover extension 12 along the side, and the upper cover assembly 20 is formed by splicing the upper cover body 21 and the upper cover extension 22 along the side. The assembled assembly has a rectangular structure. To ensure that the overall structure (including the extension part) after splicing can obtain stable vertical support, the distribution positions of the at least four corner support members 30 are as follows: Two corner support members 30 are located between two vertically aligned corners of the lower cover body 11 and the upper cover body 21. Specifically, the lower cover body 11 has lower positioning portions at two corners away from the splicing side, and the upper cover body 21 has upper positioning portions at two corners away from the splicing side; the two ends of the two corner support members 30 are respectively inserted into the positioning portions of the lower cover body 11 and the upper cover body 21.

[0039] The other two corner support members 30 are located between the two corners of the lower cover extension 12 and the upper cover extension 22 that are vertically aligned with each other. Specifically, the lower cover extension 12 has lower positioning parts at the two corners away from the splicing side (i.e., the other two outer corners that constitute the entire packaging structure), and the upper cover extension 22 has upper positioning parts at the corresponding positions; the two ends of the other two corner support members 30 are respectively inserted into the positioning parts of the lower cover extension 12 and the upper cover extension 22.

[0040] With the above arrangement, the four load-bearing pillars of the internal load-bearing frame are distributed at the outer corners of the main body and the extension components. This design allows the extension components to not only act as a cover but also directly participate in the construction of the vertical load-bearing system. When multiple boxes are stacked, the vertical load acting on the extension components can be directly transferred through the corner support members 30 located on the extension components, avoiding the risk of breakage or deformation at the joints caused by load transfer through the snaps at the joints. This greatly improves the overall load-bearing capacity and stability of the modular packaging structure.

[0041] In one embodiment, the buckle is a wedge-shaped protrusion 61, and the slot is a wedge-shaped groove 71 adapted to the shape of the wedge-shaped protrusion 61; the buckle is respectively disposed on the lower cover extension 12 and the upper cover extension 22, and the slot is respectively disposed on the lower cover body 11 and the upper cover body 21.

[0042] In this embodiment, the buckle structure is a wedge-shaped protrusion 61, and the slot structure is a wedge-shaped groove 71 that fits closely to the shape of the wedge-shaped protrusion 61. Specifically, the geometry of the wedge-shaped protrusion 61 is designed such that the width at the end is greater than the width at the root (similar to a dovetail joint).

[0043] In terms of the position arrangement, taking the lower cover extension 12 as an example, this embodiment adopts the following specific configuration: the wedge-shaped protrusion 61 is integrally formed on the side to be connected of the lower cover extension 12; correspondingly, the wedge-shaped groove 71 is opened on the side to be connected of the lower cover body 11.

[0044] During assembly, taking the lower cover assembly 10 as an example, the operator aligns the wedge-shaped protrusion 61 on the lower cover extension 12 with the wedge-shaped groove 71 on the lower cover body 11, and slides or presses it in along a direction perpendicular to the supporting plane (i.e., the up-down direction). Because the end of the wedge-shaped protrusion 61 is wider, once it is embedded in the wedge-shaped groove 71, this geometric fit creates a mechanical interlocking effect in the horizontal direction (i.e., the stretching direction perpendicular to the side). The assembly process for the upper cover assembly 20 is similar, except that the wedge-shaped protrusion 61 on it is pressed into the wedge-shaped groove 71 on the upper cover body 21 from bottom to top.

[0045] This wedge-shaped fit structure not only enables quick and precise tool-free connection, but also effectively resists the tendency of packaging to separate horizontally due to vibration or lateral force during transportation, thereby improving the structural strength and overall stability of the lower cover assembly 10 and the upper cover assembly 20 after splicing, avoiding the cumbersome operation caused by using screws or glue.

[0046] In one embodiment, a reinforcing film layer 80 is adhered to the outer surface formed by the lower cover body 11 and the lower cover extension 12, as well as the outer surface formed by the upper cover body 21 and the upper cover extension 22.

[0047] In this embodiment, after the lower cover body 11 and the lower cover extension 12 are assembled, their sides away from the sofa 200 together form a flat outer surface (i.e., the bottom surface of the packaging structure); similarly, after the upper cover body 21 and the upper cover extension 22 are assembled, their sides away from the sofa 200 also together form a flat outer surface (i.e., the top surface of the packaging structure). A reinforcing film layer 80 is adhered to each of these outer surfaces.

[0048] Specifically, the reinforcing film layer 80 is an industrial-grade plastic film with adhesive backing. After the lower cover assembly 10 and the upper cover assembly 20 are assembled, the reinforcing film layer 80 is firmly attached to the outer surface using adhesive backing.

[0049] The reinforcing film layer 80 provides a moisture-proof barrier for the upper cover assembly 20 and the lower cover assembly 10, preventing ground moisture or rainwater during transportation from seeping into the packaging structure and corroding the sofa 200. Secondly, since the lower cover assembly 10 at the bottom of the packaging is often dragged or slid on the ground during logistics handling, the reinforcing film layer 80 can provide a wear-resistant protective surface, effectively preventing the foam material of the lower cover assembly 10 from being damaged or shedding due to friction, thus extending the service life of the packaging structure.

[0050] In one embodiment, the reinforcing film layer 80 continuously spans and covers the splicing gap between the lower cover body 11 and the lower cover extension 12, and the splicing gap between the upper cover body 21 and the upper cover extension 22.

[0051] In this embodiment, when the lower cover body 11 and the lower cover extension 12 are assembled by the snap-fit ​​groove, one or more splicing gaps will be formed between them; similarly, when the upper cover body 21 and the upper cover extension 22 are assembled, corresponding splicing gaps will also be formed.

[0052] The reinforcing film layer 80 on the outer surfaces of the lower cover body 11 and the lower cover extension 12 is not pasted in sections, but rather serves as a single sheet or strip, continuously spanning and covering the seam between the lower cover body 11 and the lower cover extension 12. Similarly, the reinforcing film layer 80 on the outer surfaces of the upper cover body 21 and the upper cover extension 22 is also not pasted in sections, but rather serves as a single sheet or strip, continuously spanning and covering the seam between the upper cover body 21 and the upper cover extension 22.

[0053] Specifically, the reinforcing film layer 80 is simultaneously bonded to the surfaces of the components on both sides of the gap (i.e., simultaneously bonded to the main body and the extension). Through this bridging bonding method, the reinforcing film layer 80 acts as a kind of "connecting strap." Utilizing the film's own tensile strength, it provides additional tensile restraint at the module connection. Even if the internal snap-fit ​​structure is subjected to vibration or impact, the surface reinforcing film layer 80 effectively limits the widening of the gap, preventing the lower cover extension 12 or the upper cover extension 22 from detaching or shifting from the corresponding main body, thereby strengthening the connection stability between the main body and the extension. Furthermore, by covering the seam, the film layer also seals off possible channels for water seepage or dust entry, further enhancing the packaging's airtightness and protection.

[0054] In one embodiment, the lower cover body 11, the lower cover extension 12, the upper cover body 21 and / or the upper cover extension 22 are provided with weight-reducing holes, which are through holes 91 or blind holes 92.

[0055] In this embodiment, these weight-reducing holes can be designed according to the actual mold forming process and structural strength requirements. Specifically, the weight-reducing holes can be constructed as through holes 91 penetrating the thickness direction of the component, or as blind holes 92 with a certain depth but not completely penetrating. The shape of the weight-reducing holes can be circular, square, polygonal, or other regular / irregular shapes. These weight-reducing holes reduce the weight of the component by removing part of the material, while maintaining the necessary structural strength.

[0056] In one specific implementation of this embodiment, through holes 91 are provided on the surface of the lower cover body 11. These through holes 91 are evenly distributed in non-critical stress areas of the lower cover body 11, such as away from the edges and lower positioning parts. At the same time, blind holes 92 can also be provided in the edge areas to minimize material usage without compromising the stability of the supporting plane. Blind holes 92 are respectively provided on the upper cover body 21, the upper cover extension 22 on it, and the lower cover extension 12. These blind holes 92 extend outward from the inner surface of the component but do not penetrate to the outer surface, thereby reducing weight while maintaining the integrity of the outer surface and ensuring that the upper packaging structure will not be unstable when stacked due to the blind holes 92.

[0057] By incorporating the aforementioned weight-reducing holes, this embodiment can reduce the weight of each component while ensuring the structural strength and load-bearing capacity of the lower cover assembly 10 and the upper cover assembly 20. This reduces material consumption, lowers production costs, and improves the overall portability and transportation efficiency of the packaging structure. For example, when assembling the internal load-bearing frame, the lightweight design facilitates both mechanized and manual operations, and also reduces the pressure on the lower structure when multiple packaging structures are stacked.

[0058] In one embodiment, the lower cover assembly 10 and the upper cover assembly 20 are made of rigid foam plastic.

[0059] In this embodiment, the rigid foam plastic can be expanded polystyrene (EPS) or other materials with similar properties.

[0060] Since sofa 200 is upholstered furniture, its surface is easily damaged. EPS material can directly contact sofa 200 without scratching the surface and provides flexible protection during transport. Furthermore, although this embodiment primarily relies on corner support members 30 to bear vertical stacking loads, the cover itself needs to maintain shape stability to ensure that the aforementioned snap-fit, slot, and positioning features can precisely fit together. Rigid EPS can be molded into complex geometric shapes (such as wedge-shaped snaps and limiting grooves) and is not easily deformed after assembly.

[0061] In one embodiment, each of the corner support members 30 includes a first support portion 31 and a second support portion 32; the first support portion 31 and the second support portion 32 are connected to each other and form an included angle, which is an acute angle, a right angle or an obtuse angle.

[0062] In this embodiment, the first support portion 31 and the second support portion 32 are both long strip-shaped structures extending in the vertical direction, and the two are connected to each other along their long sides, thereby forming an angle in the cross-section.

[0063] The included angle formed by the first support part 31 and the second support part 32 can be designed according to the specific geometry of the sofa 200 package, including acute angle, right angle or obtuse angle.

[0064] Compared to a single-plane board, the solid angular structure formed by the first support part 31 and the second support part 32 has a larger moment of inertia. When the packaging structure is stacked and compressed, this structure can more effectively resist bending deformation caused by vertical pressure, ensuring the stability of the load-bearing frame. At the same time, this angled inner surface can better fit the corners of the space inside the packaging, or directly fit the corners of the irregularly shaped sofa 200 (for example, for a non-rectangular sofa 200, non-right-angled support members may be required), thereby providing support while limiting and protecting the contents.

[0065] In one embodiment, the included angle formed by the first support portion 31 and the second support portion 32 is a right angle, and both the lower positioning portion and the upper positioning portion are limiting grooves 15 with an L-shaped cross-section. The two ends formed by the first support portion 31 and the second support portion 32 are respectively inserted into the corresponding limiting grooves 15.

[0066] In this embodiment, the included angle formed by the first support portion 31 and the second support portion 32 is set to a right angle (i.e., 90 degrees). Therefore, the cross-section of the corner support member 30 is L-shaped. This L-shaped corner support member 30 can fit snugly against the four right-angled corners of the cuboid packaging unit, utilizing the corner space without encroaching on the effective central area inside the packaging used to accommodate the sofa 200.

[0067] To cooperate with the L-shaped corner support member 30, both the lower positioning part and the upper positioning part are designed as limiting grooves 15 with an L-shaped cross-section. Specifically, the upper surfaces of the four corners of the lower cover assembly 10 (composed of the lower cover body 11 and / or the lower cover extension 12) are provided with downwardly recessed L-shaped grooves; the lower surfaces of the four corners of the upper cover assembly 20 (composed of the upper cover body 21 and / or the upper cover extension 22) are provided with upwardly recessed L-shaped grooves.

[0068] During assembly, the bottom end of the corner support member 30 is inserted into the L-shaped limiting groove 15 corresponding to the lower cover assembly 10, and its top end is inserted into the L-shaped limiting groove 15 corresponding to the upper cover assembly 20. The sidewall of the L-shaped limiting groove 15 can simultaneously limit the corner support member 30 in two vertical horizontal directions (X-axis and Y-axis directions), preventing the corner support member 30 from rotating around its own axis. Compared with cylindrical insertion holes or flat abutments, the L-shaped groove has a larger contact area and is located at the outermost corner of the packaging, giving the constructed internal load-bearing frame the largest lever arm, thereby improving the overall frame's resistance to torsion and tipping.

[0069] In one embodiment, the lower positioning part and the upper positioning part are respectively provided on the lower cover assembly 10 and the upper cover assembly 20 with limiting grooves 15. The cross-sectional shape of the limiting groove 15 is adapted to the cross-sectional shape of the two ends of each corner support member 30. The two ends of the corner support member 30 are respectively inserted into the corresponding limiting groove 15.

[0070] In this embodiment, the lower positioning part is a limiting groove 15 formed by a downward recess on the upper surface of the lower cover assembly 10 (including the lower cover body 11 or the lower cover extension); the upper positioning part is a limiting groove 15 formed by an upward recess on the lower surface of the upper cover assembly 20 (including the upper cover body 21 or the upper cover extension).

[0071] The cross-sectional shape of the limiting groove 15 is adapted to the cross-sectional shape of both ends of each corner support member 30. Regardless of whether the cross-section of the corner support member 30 is designed as an L-shape, square, triangle, U-shape or other irregular structure, the corresponding limiting groove 15 is processed into a shape that matches its contour.

[0072] During packaging and assembly, the lower end of the corner support member 30 is inserted into the limiting groove 15 of the lower cover assembly 10, and the upper end is inserted into the limiting groove 15 of the upper cover assembly 20. Through this "insertion" fit, the sidewall of the limiting groove 15 tightly covers the outer periphery of the end of the corner support member 30. The sidewall of the limiting groove 15 provides all-round horizontal limiting for the corner support member 30, effectively preventing the support member from lateral slippage or tipping over during transportation vibrations. In addition, through shape-adaptive insertion positioning, the corner support member 30 is forcibly ensured to be vertically upright, ensuring that the vertical force transmission path between the upper and lower cover assemblies 10 does not deviate, thereby maximizing the stability of the internal load-bearing frame. At the same time, operators or automated equipment only need to align the support member with the groove to complete the positioning, without the need for additional screw fixing or complex calibration procedures.

[0073] In one embodiment, the outer covering member 50 is a cardboard box, which is fastened to the outside of the inner load-bearing frame by packing straps 100.

[0074] After assembling the internal load-bearing frame (that is, fitting the corner support member 30 into place with the lower cover assembly 10 and the upper cover assembly 20) and housing the sofa 200, external encapsulation is required. In this embodiment, the outer covering member 50 is specifically selected as a cardboard box.

[0075] The carton is made of corrugated cardboard and is designed to fit snugly around the perimeter of the internal load-bearing frame. The carton can be designed as a "five-sided shield" structure, covering the top and all four side walls of the packaging. Since the internal load-bearing frame already bears the stacking pressure and protects the sofa 200 from mechanical strength requirements, the carton primarily serves to protect against dust, dirt, and light, and provides a surface for printed product information (such as brand logos, barcodes, and warning labels), eliminating the need for high-strength, high-grammage heavy-duty cardboard like traditional packaging, thus reducing packaging costs.

[0076] In order to secure the carton in place and lock the various modules (lower cover assembly, upper cover assembly 20, corner support members) connected by assembly into an inseparable whole transport unit, this embodiment provides packing straps 100 on the outside of the carton.

[0077] The packing strap 100 wraps around the outside of the carton and secures it vertically and horizontally. For example, the packing strap 100 vertically wraps around the top surface of the upper cover assembly 20 and the bottom surface of the lower cover assembly 10 and tightens them. The pre-tension applied by the packing strap 100 presses the upper cover assembly 20 and the lower cover assembly 10 inwards, thereby firmly holding the corner support member 30 sandwiched in the middle. This securing method not only fixes the outer carton but also mitigates the risk of loosening that may exist in the vertical direction of the internal modular assembly (such as snap-fit ​​connections and slot mating), ensuring that the entire packaging structure will not fall apart during handling and flipping.

[0078] In one embodiment, the outer peripheral sidewalls of the lower cover assembly 10 and the upper cover assembly 20 are provided with guide surfaces 110 that are inclined along the insertion direction of the outer cover member 50.

[0079] In this embodiment, the guide surface 110 is an inclined surface that is tilted relative to the vertical direction. This tilting direction is consistent with the direction in which the outer covering member 50 is fitted into the inner load-bearing frame.

[0080] For example, if the packaging process involves inserting the carton from top to bottom, a guide surface 110 is provided at the upper edge of the outer peripheral sidewall of the upper cover assembly 20 (including the upper cover body 21 and the upper cover extension). When the carton moves downward and contacts the upper cover assembly 20, the guide surface 110 can smoothly guide the opening edge of the carton to the outside of the vertical sidewall of the upper cover assembly 20, thus playing a "guide" role.

[0081] Similarly, a corresponding guide surface 110 is also provided at the upper edge of the outer peripheral sidewall of the lower cover assembly 10 so that the lower cover assembly 10 can be smoothly covered when the carton slides to the bottom.

[0082] By setting the guide surface 110, the sharp edges of the rigid module are eliminated from hindering the carton installation. This design not only reduces the risk of the carton being scratched or broken during manual operation, but also enables robotic arms or automated packaging equipment to complete the carton insertion action more quickly and smoothly, thereby achieving highly efficient automated packaging throughout the entire process in conjunction with the aforementioned embodiments.

[0083] 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 packaging structure for sofas, characterized in that, include: The lower cover assembly includes a lower cover body and at least one lower cover extension member detachably connected to the side of the lower cover body. The lower cover body and the lower cover extension member together form a support plane for supporting the bottom of the sofa. A cover assembly, the cover assembly including a cover body and at least one cover extension detachably connected to the side of the cover body, the cover body and the cover extension together forming a cover plane for covering the top of the sofa; At least four corner support members, each of which is vertically arranged between the lower cover assembly and the upper cover assembly, for forming a load-bearing support between the lower cover assembly and the upper cover assembly; The lower cover assembly has a lower positioning part at the corner position corresponding to each of the corner support members, and the upper cover assembly has an upper positioning part at the position corresponding to each of the corner support members; both ends of each corner support member are respectively matched with the corresponding lower positioning part and the upper positioning part for limiting, so that each corner support member, together with the lower cover assembly and the upper cover assembly, forms an internal load-bearing frame for accommodating the sofa, and the internal load-bearing frame is configured to bear and transmit vertical loads when multiple packaging structures are stacked; An outer covering member that covers the outside of the inner load-bearing frame.

2. The packaging structure according to claim 1, characterized in that, The lower cover body and the lower cover extension are provided with mutually cooperating buckles and slots, as are the upper cover body and the upper cover extension.

3. The packaging structure according to claim 2, characterized in that, The buckle is a wedge-shaped protrusion, and the slot is a wedge-shaped groove adapted to the shape of the wedge-shaped protrusion; the buckles are respectively disposed on the lower cover extension and the upper cover extension, and the slots are respectively disposed on the lower cover body and the upper cover body.

4. The packaging structure according to claim 1, characterized in that, The outer surface formed by the lower cover body and the lower cover extension, as well as the outer surface formed by the upper cover body and the upper cover extension, are all covered with a reinforcing film layer.

5. The packaging structure according to claim 4, characterized in that, The reinforcing film layer continuously spans and covers the splicing gap between the lower cover body and the lower cover extension, as well as the splicing gap between the upper cover body and the upper cover extension.

6. The packaging structure according to claim 1, characterized in that, The lower cover body, the lower cover extension, the upper cover body and / or the upper cover extension are provided with weight-reducing holes, which are through holes or blind holes.

7. The packaging structure according to claim 1, characterized in that, The lower cover assembly and the upper cover assembly are made of rigid foam plastic.

8. The packaging structure according to claim 1, characterized in that, Each of the corner support members includes a first support portion and a second support portion; the first support portion and the second support portion are connected to each other and form an included angle, which is an acute angle, a right angle or an obtuse angle.

9. The packaging structure according to claim 8, characterized in that, The included angle formed by the first support part and the second support part is a right angle. The lower positioning part and the upper positioning part are both limiting grooves with an L-shaped cross-section. The two ends formed by the first support part and the second support part are respectively inserted into the corresponding limiting grooves.

10. The packaging structure according to claim 1, characterized in that, The lower positioning part and the upper positioning part are respectively provided on the lower cover assembly and the upper cover assembly as limiting grooves. The cross-sectional shape of the limiting groove is adapted to the cross-sectional shape of the two ends of each corner support member. The two ends of the corner support member are respectively inserted into the corresponding limiting groove.

11. The packaging structure according to claim 1, characterized in that, The outer covering component is a cardboard box, which is fastened to the outside of the internal load-bearing frame by packing straps.

12. The packaging structure according to claim 11, characterized in that, The outer peripheral sidewalls of the lower cover assembly and the upper cover assembly are provided with guide surfaces that are inclined along the insertion direction of the outer cover member.

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