A sofa which can be completely disassembled

Abstract

A full dismounting sofa relates to the technical field of furniture, including: sitting and lying plate; two armrest plates are respectively arranged on the left and right sides of the sitting and lying plate; backrest plate is arranged on the back side of the sitting and lying plate; support structure is arranged below the sitting and lying plate; the sum of the width of the armrest plate and the width of the backrest plate is less than or equal to the width of the sitting and lying plate; the length of the backrest plate is adapted to the length of the sitting and lying plate, and the length of the armrest plate is less than the length of the sitting and lying plate; the backrest plate and the armrest plate can be stacked on the sitting and lying plate, the armrest plate and the backrest plate are arranged along the width direction of the sitting and lying plate when stacking, and the sitting and lying plate, the armrest plate and the backrest plate form a containing space for containing the support structure. The backrest plate and the armrest plate can be stacked or folded on the sitting and lying plate, and all components can be compactly integrated.

Description

Technical Field

[0001] This utility model relates to the field of furniture technology, and in particular to a fully detachable sofa. Background Technology

[0002] Sofas, as a common type of seating in homes, typically consist of a frame structure, filling materials, and an outer covering. Traditional sofa frames often use a one-piece molded wooden or metal structure, with components fixed together by mortise and tenon joints, welding, or bolts, resulting in a large overall size and making disassembly and assembly impossible. During logistics and transportation, these sofas must be packed as a whole, resulting in a considerable packaging volume and significantly increasing transportation costs.

[0003] In the prior art, Chinese utility model patent CN118648780A discloses a modular sofa and seat frame that are easy to assemble and disassemble, including a seat frame and a backrest; the bottom of the backrest is located on the outside of the rear vertical panel and is provided with a hook that cooperates with the rear vertical panel; the hook has four downward-facing grooves that cooperate with the thickness of the rear vertical panel, and the grooves are engaged with the top of the rear vertical panel; or it includes at least two sofa seats, a top buckle for the seat frame, and a bottom connector for the seat frame, with at least one set of corresponding side vertical panels that are closely fitted between the two sofa seats, the top of the corresponding side vertical panels being provided with a top buckle for the seat frame, and the bottom of the corresponding side vertical panels being provided with a bottom connector for the seat frame. This method of disassembling the sofa into flexible components makes disassembly, assembly, and transportation relatively convenient.

[0004] While the sofa components described in the prior art are detachable, their shapes and sizes are not optimized for stacking. The components cannot be stacked compactly, resulting in them still occupying a significant amount of space after disassembly, which is inconvenient for transportation or home storage. Utility Model Content

[0005] The technical problem this invention aims to solve is how to overcome the shortcomings of existing sofas, such as low stacking efficiency after disassembly and assembly and large transportation volume.

[0006] To achieve the above objectives, according to one aspect of the utility model, a fully detachable sofa is provided, comprising: a seat / recliner; two armrests respectively disposed on the left and right sides of the seat / recliner; a backrest disposed on the rear side of the seat / recliner; and a support structure disposed below the seat / recliner; wherein the sum of the widths of the armrests and the backrest is less than or equal to the width of the seat / recliner; the length of the backrest is adapted to the length of the seat / recliner, and the length of the armrests is less than the length of the seat / recliner; the backrest and the armrests can be stacked on the seat / recliner, wherein when stacked, the armrests and the backrest are arranged along the width direction of the seat / recliner, and an accommodating space for accommodating the support structure is formed between the seat / recliner, the armrests, and the backrest.

[0007] As a preferred embodiment of the above technical solution, the seat / reclining board is composed of at least two sub-seat boards spliced ​​together, and each of the sub-seat boards is detachable and stackable; the backrest board is composed of at least two sub-backrest boards spliced ​​together, and each of the sub-backrest boards is detachable and stackable; the number of sub-backrest boards is the same as the number of sub-seat boards.

[0008] As a preferred embodiment of the above technical solution, hooks and hanging flanges are respectively connected to the thickness surfaces of two adjacent sub-seat boards. The hanging flanges have hanging spaces, and the hanging flanges are hung on the hooks through the hanging spaces to form a fit between the two seat boards.

[0009] As a preferred embodiment of the above technical solution, the armrest includes an inner side of the armrest facing the seating area after the sofa is assembled, and an outer side of the armrest corresponding to the inner side of the armrest; a first sliding component is provided on the lower side of the inner side of the armrest, and a second sliding component is provided on the side of the inner side of the armrest near the backrest after the sofa is assembled.

[0010] The aforementioned seating area refers to the position where a person sits on the assembled sofa.

[0011] As a preferred embodiment of the above technical solution, a first sliding female component adapted to the first sliding sub-component is provided on the thickness surface of the seat / reclining board; the first sliding sub-component and the first sliding female component cooperate to allow the armrest board to move along the width direction of the seat / reclining board, and lock the armrest board to move along the length direction of the seat / reclining board.

[0012] As a preferred embodiment of the above technical solution, a second sliding female component adapted to the second sliding male component is provided on the thickness surface of the backrest plate; the second sliding male component and the second sliding female component cooperate to allow the backrest plate to move along the width direction of the armrest plate, and lock the backrest plate to move along the length direction of the armrest plate.

[0013] As a preferred embodiment of the above technical solution, the sitting / reclining board and the backrest board are provided with corresponding connecting holes, and the two are fixed by a bolt connection structure passing through the connecting holes.

[0014] As a preferred embodiment of the above technical solution, a third sliding sub-component and a third sliding mother-component are respectively provided on the thickness surface of two adjacent sub-plates; the third sliding sub-component and the third sliding mother-component cooperate to allow one of the sub-plates to move along the width direction of the other sub-plate, and lock both to move along the length direction.

[0015] As a preferred embodiment of the above technical solution, the support structure includes edge supports and middle supports; the edge supports are located in the four corner areas below the seat / reclining board; the middle supports are located between the two sub-seat boards and wrap around the adjacent frame rods of the two sub-seat boards, and the relative positions of the middle supports and the two sub-seat boards are fixed by fasteners.

[0016] As a preferred embodiment of the above technical solution, a storage bag is provided on the outer surface of the handrail.

[0017] In summary, this utility model has the following advantages: 1. This utility model achieves compact integration of all core components through the stacking design of the backrest, armrest, and seat / reclining board, and the layout of the support structure that can be stored in the resulting accommodating space. This significantly reduces the overall volume after disassembly, effectively reducing logistics costs and storage space requirements during transportation, and is especially suitable for e-commerce sales models and small-apartment family usage scenarios. 2. Furthermore, the modular splicing structure of the sub-seat board and sub-backrest board adopted by this utility model, combined with a variety of reliable and flexible detachable connection methods such as sliding connection, hooks or hinges, not only gives the sofa height reconfigurability, but also enables the folding or separation of the seat board and backrest board for compact storage, improving the product's space adaptability and storage convenience. 3. Furthermore, this utility model innovatively adopts a dual locking mechanism that combines sliding connection on the thickness surface with bolt fixing at the component connection. This design not only simplifies the quick assembly and disassembly process when using bare hands or without professional tools, but also significantly enhances the displacement constraint between components in multiple directions, thereby ensuring the overall structural rigidity and stability of the sofa under long-term use. 4. Furthermore, this utility model optimizes the stacking method of the handrail board. By arranging the sliding sub-components close to the edge or adopting a stacking strategy with specific opposite faces, the planar area occupied by the stacked body is effectively reduced. The matching relationship between the support legs and the gap is also considered, thereby maximizing space utilization during the packaging and transportation stage and reducing the risk of collision damage between components. 5. Furthermore, this utility model introduces detachable L-shaped angle irons and other auxiliary reinforcement components at key splicing parts, and through the design of standardized connection holes and embedded nuts, it effectively enhances the structural rigidity of the splicing parts, while maintaining the convenience of disassembly and assembly, which helps to extend the service life of the product and keep its appearance clean.

[0018] Further or other beneficial effects will be discussed in the embodiments. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model; Figure 2 for Figure 1 Enlarged view of area A; Figure 3 for Figure 1 Enlarged view of area B; Figure 4 This is a schematic diagram of the structure of Embodiment 2 of this utility model; Figure 5 for Figure 4 Enlarged view of area D; Figure 6 This is a magnified view of area C as shown in Figure 4; Figure 7 This is a schematic diagram of the hook and hanging flange structure of this utility model; Figure 8 This is a schematic diagram of the support leg installation in this utility model; Figure 9 This is a schematic diagram of the stacking of the present invention; Figure 10 This is a schematic diagram of the second hinge connection of this utility model; Figure 11 This is a schematic diagram of the first hinge connection of this utility model; Figure 12 This is a schematic diagram showing the connection between the insert structure of this utility model and the armrest board and the seat board; Figure 13 This is a schematic diagram of one type of insert structure of this utility model; Figure 14 This is a schematic diagram of another insert structure of this utility model; Figure 15 A schematic diagram of a pin-type connection between the handrail and backrest. Figure 16 This is a schematic diagram of the pin assembly structure; Figure 17 A schematic diagram showing the connection between the two sub-plates to further reinforce the angle iron; Figure 18 for Figure 17 Enlarged view of area E; Among them, 1-seating board, 101-first sliding mother piece, 11-sub-seat board, 2-armrest board, 21-inner side of armrest, 211-first sliding sub-piece, 212-second sliding sub-piece, 22-outer side of armrest, 3-backrest board, 301-second sliding mother piece, 302-third sliding sub-piece, 303-third sliding mother piece, 31-sub-backrest board, 4-support structure, 41-edge support foot, 42-middle support foot, 51-hook, 52-hanging flange, 521-hanging space, 61-first hinge, 62-second hinge, 711-elastic sheet structure, 712-fitting body, 713-guide wheel, 721-flange, 722-limiting block, 723-ball, 8-pin assembly, 81-annular groove, 82-limiting piece, 83-control button, 9-angle iron. Detailed Implementation

[0020] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the construction shown in the accompanying drawings. The terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively. These are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.

[0021] The present invention will be further explained below with reference to the embodiments: Example 1:

[0022] A fully disassembled sofa, as shown in the reference Figure 1 , Figure 2 and Figure 3 (For ease of description and viewing, the accompanying drawings of this embodiment are not covered with any material.) The structure includes a seating / reclining board 1, two armrests 2, a backrest 3, and a support structure 4. The two armrests 2 are respectively installed on the left and right sides of the seating / reclining board 1, while the backrest 3 is vertically positioned behind the seating / reclining board 1. The support structure 4 is stably placed directly below the seating / reclining board 1. The sum of the widths of the armrests 2 and the backrest 3 is less than or equal to the width of the seating / reclining board 1, ensuring optimized space during stacking. The length of the backrest 3 precisely matches the length of the seating / reclining board 1 to maintain the overall structural balance and stability, while the length of the armrests 2 is less than the length of the seating / reclining board 1 to avoid component overlap. During assembly and disassembly, the backrest 3 and armrests 2 can be efficiently stacked on the seating / reclining board 1. (Refer to...) Figure 9When stacked, the armrest board 2 and the backrest board 3 are arranged parallel to each other along the width direction of the seat / reclining board 1, thus naturally forming an internal storage space between the seat / reclining board 1, the armrest board 2, and the backrest board 3. This space is specifically designed for the safe storage of the support structure 4, facilitating compact packaging and convenient transportation, while maintaining a stable connection between the components. The support structure 4 includes edge supports 41, which are located at the four corners below the seat / reclining board 1.

[0023] In this invention, the thickness surface specifically refers to the side of a sheet metal component that is perpendicular to the surface of the sheet, i.e., the surface that displays the thickness of the sheet. Alternatively, the thickness surface can be described as the narrow side of the sheet in three-dimensional space.

[0024] The armrest panel 2 includes an inner side 21 facing the seating area after sofa assembly and an outer side 22 corresponding to the inner side 21. A storage pocket is added to the outer side of the armrest panel 2 to enhance the sofa's practicality. A first sliding component 211 is provided on the underside of the inner side 21, and a second sliding component 212 is provided on the side of the inner side 21 near the backrest panel 3 after sofa assembly. The first sliding component 211 and the second sliding component 212 are placed on the inner side 21 for easy subsequent installation. However, with this arrangement, if two armrest panels 2 are stacked with their inner sides 21 and outer sides 22 overlapping, the presence of the first sliding component 211 and the second sliding component 212 may hinder tight stacking. Therefore, [further details are needed]. Figure 9 In this application, the first sliding component 211 and the second sliding component 212 are arranged as close as possible to the edge of the armrest board 2. This design minimizes the planar area occupied by the stacked body when the two armrest boards 2 are overlapped with their inner and outer sides, significantly optimizing the utilization of transport space. This design is suitable when the sum of the width of the armrest board and the width of the backrest board is less than the width of the seat / reclining board.

[0025] Furthermore, if the sum of the width of the armrest board and the width of the backrest board equals the width of the seat / reclining board, the above stacking method will cause the uppermost armrest board to protrude from the seat / reclining board. Therefore, in another embodiment of this application, a stacking method is adopted in which the inner sides 21 of the armrests face each other or the outer sides 22 of the armrests face each other. In this arrangement, a gap space will be formed between the two armrest boards 2. It should be noted that in this method, the edge support 41 and the middle support 42 of the support structure 4 should not be designed too small, because if the support size is designed too small, the gap may cause the support to roll into the gap space during transportation and move repeatedly between it and the accommodating space, causing the support structure 4 to collide with the board, ultimately affecting the structural integrity of the product when it arrives at its destination. The thickness surface of the seat / reclining board 1 is provided with a first sliding female part 101 that precisely matches the first sliding sub-part 211; through the sliding connection between the two, the armrest board 2 can be smoothly moved and adjusted along the width direction of the seat / reclining board 1, while the matching structure firmly locks the displacement of the armrest board 2 along the length direction of the seat / reclining board 1, ensuring stability. Correspondingly, a second sliding female part 301 is provided on the thickness surface of the backrest plate 3, which is adapted to the second sliding sub-part 212 on the armrest plate 2. The cooperation between the second sliding sub-part 212 and the second sliding female part 301 allows the backrest plate 3 to be freely adjusted in position along the width direction of the armrest plate 2, while also strictly limiting the possibility of the backrest plate 3 moving along the length direction of the armrest plate 2. In addition, precise positioning connection holes are provided on the seat / reclining plate 1 and the backrest plate 3, and the two are finally fixed and locked by a bolt connection structure that passes through these connection holes. This sliding connection mechanism not only provides quick and reliable positioning and disassembly functions for the armrest plate 2, the backrest plate 3, and the seat / reclining plate 1, greatly simplifying the assembly and disassembly process, but also avoids accidental misalignment of components due to external forces during handling or movement, ensuring the integrity and stability of the product structure. Example 2:

[0026] The difference from Example 1 is that, referring to Figure 4 , Figure 5 , Figure 6 and Figure 7 In this embodiment, the sitting / reclining board 1 is composed of two sub-sitting boards 11 spliced ​​together. Both sub-sitting boards 11 are based on an iron frame as the main body, as detailed in the following figure. Figure 5 and Figure 7 The sub-seat plate 11 has hooks 51 and hanging flanges 52 on its thick surface. The hanging flanges 52 have hanging spaces 521. The sub-seat plates 11 can be detachably stacked and connected to form a complete sitting / lying surface through the cooperation of the hanging spaces 521 and the hooks 51. (Refer to...) Figure 6 The backrest 3 is composed of two sub-backrests 31. The thickness surfaces of the sub-backrests 31 are respectively provided with a third sliding sub-component 302 and a third sliding mother component 303. Through sliding cooperation, the width direction of the sub-backrests 31 can be adjusted and the length direction can be locked, which is convenient for disassembly and stacking for storage.

[0027] The support structure 4 includes four edge legs 41 and two center legs 42. (See reference...) Figure 8 The edge support legs 41 are located at the four corners below the seat / reclining board 1, and the middle support legs 42 are located at the joint between the two sub-seat panels 11, wrapping around the adjacent frame rods and fixing the relative positions of the sub-seat panels 11 with bolts to ensure load-bearing stability. During disassembly, the support structure 4 can be completely stored within the space formed by stacking the seat / reclining board 1, armrest board 2, and backrest board 3. The sum of the widths of the armrest board 2 and the backrest board 3 is less than the width of the seat / reclining board 1. When stacked, the armrest board 2 and backrest board 3 are arranged side-by-side along the width direction of the seat / reclining board 1, and the space enclosed by the three just accommodates all the support legs. Example 3:

[0028] A fully disassembled sofa, as shown in the reference Figure 1 , Figure 2 and Figure 3 (For ease of description and viewing, the accompanying drawings of this embodiment are not covered with any material.) The structure includes a seating / reclining board 1, two armrests 2, a backrest 3, and a support structure 4. The two armrests 2 are respectively installed on the left and right sides of the seating / reclining board 1, while the backrest 3 is vertically positioned behind the seating / reclining board 1. The support structure 4 is stably placed directly below the seating / reclining board 1. The sum of the widths of the armrests 2 and the backrest 3 is less than or equal to the width of the seating / reclining board 1, ensuring optimized space during stacking. The length of the backrest 3 precisely matches the length of the seating / reclining board 1 to maintain the overall structural balance and stability, while the length of the armrests 2 is less than the length of the seating / reclining board 1 to avoid overlapping or conflicting components. During assembly and disassembly, the backrest 3 and armrests 2 can be efficiently stacked on the seating / reclining board 1.

[0029] In this embodiment, the sitting / reclining board 1 is composed of two sub-sitting boards 11 spliced ​​together. Both sub-sitting boards 11 are based on an iron frame. The backrest board 3 is composed of two sub-backrest boards 31.

[0030] In this embodiment, refer to Figure 11 The two sub-base plates 11 are detachably and rotatably connected by two first hinges 61. The mounting ends of the first hinges 61 are fixed to the bottom of the connection point between the two sub-base plates 11 in the width direction, i.e., the side of the iron frame closest to the ground plane, by fasteners (preferably self-tapping screws). The two first hinges 61 are symmetrically distributed along the length of the sub-base plates 11 to ensure balanced force during folding. Specifically, in this embodiment, the first hinges 61 are four-fold hinges. This design aims to avoid the problem that may occur when using conventional hinges, where the screw heads are too large or too high, causing interference between the screw heads during folding and preventing complete folding. The structural characteristics of the four-fold hinge effectively avoid this situation.

[0031] The folding process is symmetrical about the center line at the connection point of the two sub-seat panels 11 in the width direction (i.e., the rotation axis of the first hinge 61 coincides with this center line). By rotating one of the sub-seat panels 11, the two sub-seat panels 11 can be folded towards each other around this symmetrical axis. After folding, the lower planes of the iron frames of the two sub-seat panels 11 are completely fitted together, which greatly reduces the thickness of the seat / reclining board 1 after folding. Compared with the traditional splicing structure, it is easier to achieve compact storage.

[0032] Additionally, in this embodiment, refer to Figure 10 Each sub-backrest plate 31 of the backrest plate 3 is correspondingly fitted to a sub-seat plate 11, and the two are rotatably connected by a second hinge 62. The number of second hinges 62 is adjusted according to the length of the sub-backrest plate 31. In this embodiment, the sub-seat plate 11 and the sub-backrest plate 31 are connected by two second hinges 62. The two mounting ends of the second hinge 62 are respectively fixed to the thickness surface of the iron frame of the sub-backrest plate 31 in the length direction and the thickness surface of the iron frame of the sub-seat plate 11 in the length direction, that is, the narrow side surface adjacent to the sub-backrest plate 31 and the sub-seat plate 11, and the rotation axis of the hinge is parallel to the length direction of the sub-seat plate 11 and the sub-seat plate 31. In the assembled state, the sub-back panel 31 rotates around the hinge axis to a position perpendicular to the plane of the sub-seat panel 11, forming the support surface of the sofa back; when disassembling and storing, rotating the sub-back panel 31 allows it to fold towards the sub-seat panel 11, and finally the inner plane of the iron frame of the sub-back panel 31 (the side facing the sitting area) is completely in contact with the upper plane of the iron frame of the sub-seat panel 11.

[0033] Please refer to Figure 10 and Figure 11 In the figure, in this embodiment, the two sub-seat plates 11 and the sub-back plate 31 are connected by hinges, not as separate structures. Therefore, the folding process has a clear operational sequence: First, operate the second hinge 62 to fold the two sub-back plates 31 toward the corresponding sub-seat plates 11, so that the inner plane of the sub-back plate 31 is in contact with the upper plane of the sub-seat plate 11. Then, operate the first hinge 61 to fold the two sub-seat plates 11 toward each other around the axis of symmetry, so that their lower planes are in contact with each other. At the same time, the two folded sub-back plates 31 will be located on both sides of the stacked body of the two folded sub-seat plates 11.

[0034] Furthermore, the connection structure between the armrest board 2 and the sub-seat board, and between the armrest board 2 and the sub-backrest board 31, has been further improved. The armrest board 2 uses an iron frame as its supporting framework. The positioning of the armrest board 2 and the sub-seat board 11, as well as the locking of the armrest board 2 and the sub-backrest board 31, are achieved through a combination structure of "insertion plate system and pin-type lock", which takes into account both rapid assembly and multi-directional movement limitation.

[0035] Specifically, for the positioning of the insert system between the armrest board 2 and the seat board 11, please refer to... Figure 12The contact surface between the iron frame of the armrest board 2 and the iron frame of the sub-seat board 11 (that is, the narrow inner side of the armrest board 2 facing the sub-seat board 11) has a pre-set and fixed insert structure on the iron frame of the armrest board 2; correspondingly, a locking structure is provided on the contact surface of the iron frame of the sub-seat board 11, and the locking structure has a slot adapted to the insert.

[0036] During installation, the insert system is inserted into the slot in a direction parallel to the mating surface. The mating structure between the insert and the slot can directly restrict the movement of the armrest 2 along the length of the sub-seat 11. At the same time, the two sides of the insert fit tightly with the straight section of the inner wall of the slot, forming a limit along the width of the sub-seat 11, effectively preventing the armrest 2 from shifting along the width during use, and achieving precise pre-positioning without tools.

[0037] In this embodiment, refer to Figure 13 The insert adopts an internally hollow, retractable and deformable elastic sheet structure 711, and the locking structure includes a mating block body with a slot and two guide wheels 713. During the insertion process, the insert is guided inward by the guide wheels 713 and compressed and deformed, squeezing into the slot; after it is fully inserted, the elastic potential energy is released to restore it to its original shape, fill the slot, and form a stable limit.

[0038] In another embodiment of this application, reference is made to Figure 14 The insert structure has integrally formed flanges 721 on both sides, and the locking structure consists of two limiting blocks 722. A slot is formed between the two limiting blocks 722 and a retractable ball 723 is provided. When the insert is pressed down, the flanges 721 compress the ball 723 to retract, widening the slot gap; after the insert is in place, the ball 723 quickly springs back, locking the flanges 721 to achieve locking.

[0039] In the accompanying drawings of the two types of insert and slot mating structures in this application, one side wall is hidden by a dashed line for easy observation; the dashed part is actually a solid (see...). Figure 13 , Figure 14 (The dotted line section) means that when the insert is inserted into the corresponding slot, its front-back and left-right positions are limited to ensure the stability of the fit.

[0040] The armrest 2 and the backrest 31 are locked with a pin-type latch, please refer to [reference needed]. Figure 15 and Figure 16 The contact surfaces of the handrail board 2 iron frame and the sub-backrest board 31 iron frame are ultimately locked together by a pin-type locking structure. This structure mainly consists of a pin assembly and an embedded sleeve (not shown in the figure).

[0041] An embedded sleeve is pre-embedded inside the iron frame of the sub-side plate 31, while the pin assembly passes through the iron frame of the handrail plate 2 and is fixed to the handrail plate 2 by welding after assembly. The pin assembly is a rotating structure, with an annular groove 801 at one end inserted into the sub-side plate 31, in which a radially retractable limiting piece 802 is disposed. A control button 803 is provided at the other end of the assembly for controlling the retraction or ejection of the limiting piece 802 within the annular groove 801.

[0042] During installation, first operate the control button 803 to retract the limiting piece 802 into the annular groove 801, facilitating the smooth insertion of the pin assembly into the embedded sleeve. After insertion, operate the control button 803 again to eject the limiting piece 802 from the annular groove 801. At this time, the limiting piece 802 and the corresponding structure inside the embedded sleeve form a locking interlock, thereby achieving a secure lock.

[0043] It should be noted that the appendix Figure 15 The diagram is in exploded form only to clearly show the structural relationships; in the actual finished product, the pin assembly has been welded and fixed inside the iron frame of the handrail plate 2.

[0044] In addition, in the above embodiment, the armrest board 2 is fixed to the left and right sides of the sub-backrest board 31 by means of the pin assembly 8. In another embodiment of this application, the orientation of the mating hole can be changed, and the armrest board 2 can be fixed to the side of the sub-backrest board 31 facing the sitting position by means of the pin assembly 8. Other methods remain unchanged, and this method can also meet the assembly requirements of this application.

[0045] Furthermore, in another embodiment of this application, the slot structure is embedded inside the steel frame of the sub-seat plate 11. In this design, the lower armrest plate 2 is inserted into the steel frame of the sub-seat plate 11 from top to bottom instead of the side of the steel frame of the sub-seat plate 11. This method can also meet the requirements of this application. In this embodiment, the support structure 4 adopts the combination of edge support 41 and middle support 42 (refer to embodiment 2): the edge support 41 is fixed to the four corners below the iron frame of the seat plate 1 by threaded fasteners to support the corner load of the seat plate 1; the middle support 42 is fixed to the bottom of the connection between the two iron frames of the sub-seat plate 11 in the width direction, specifically on the side of the iron frame closer to the ground plane. The relative position of the middle support 42 and the sub-seat plate 11 is fixed by fasteners (such as bolts) to enhance the load-bearing capacity of the joint of the seat plate 1. When storage or transportation is required, after disassembling the support structure 4, the sub-seat plate 11 is folded along the hinge axis, and the sub-backrest plate 31 is folded toward the sub-seat plate 11. Then, the armrest plate 2 is separated from the sub-seat plate 11 and the sub-backrest plate 31 and attached to the surface of the folded seat / reclining plate 1. The two armrest plates 2 can be placed on the exposed end faces of the two sub-seat plates 11, that is, on the end faces where the sub-backrest plates are stacked. At this time, on the two end faces, the folded seat / reclining plate 1 and the sub-backrest plate 31, together with the armrest plates 2 stacked on the end faces, form two accommodating spaces. The edge support legs 41 and the middle support legs 42 of the support structure 4 can be placed into these two accommodating spaces as needed, realizing the compact integration of all components and significantly reducing the transportation and storage volume. Example 4:

[0046] To further reinforce the structure, this embodiment adds an L-shaped angle iron 9 to the structure of embodiment 2 or embodiment 3, referring to... Figure 17 and Figure 18 This ensures the structural rigidity and stability of the two sub-plates 31 after splicing. The two sub-plates 31 are detachably fixed by L-shaped angle irons 9. The specific structure and installation method are as follows: The L-shaped angle iron 9 is made of steel plate. The lengths of the two right-angled sides of the angle iron 9 are adapted to the size of the iron frame of the sub-backrest 31, thus avoiding protrusion from the surface of the sub-backrest 31 and affecting its appearance or use. The installation position of the angle iron 9 is precisely positioned above and behind the connection between the two sub-backrests 31, that is, on the side of the backrest 31 away from the sitting area (not the side facing the person sitting), and close to the top of the sub-backrest 31. During installation, it is necessary to ensure that the geometric center of the L-shaped angle iron 9 is parallel to the center of the connection between the two sub-backrests 31, ensuring that the force exerted by the angle iron 9 on the two sub-backrests 31 is balanced.

[0047] The two right-angled inner surfaces of the L-shaped angle iron 9 are tightly fitted to the corresponding surfaces of the sub-backrest 31: one right-angled inner surface is fitted to the adjacent longitudinal thickness surfaces of the two sub-backrests 31, i.e., the narrow side of the sub-backrest 31 extending along its length; the other right-angled inner surface is fitted to the longitudinal rear side of the two sub-backrests 31, i.e., the wide side of the sub-backrest 31 extending along its length and facing away from the seating area. Two coaxial bolt holes are respectively provided on the two right-angled sides of the angle iron 9; correspondingly, embedded nuts are pre-installed on the thickness surfaces and rear sides of the sub-backrest 31, with nut specifications matching the bolts.

[0048] During fixing, bolts are passed through the bolt holes of the L-shaped angle iron 9 and screwed into the pre-set nuts on the sub-back plate 31 one by one and pre-tightened, so that the two inner sides of the angle iron 9 are completely in contact with the surface of the sub-back plate 31, thereby firmly connecting the two sub-back plates 31 into a whole. This structure can effectively resist the lateral and longitudinal forces at the joint of the two sub-back plates 31, prevent loosening or misalignment at the joint during use, and ensure the overall support stability of the back plate 3; at the same time, the bolt connection method is detachable, and when disassembling and storing later, only the bolts need to be loosened to separate the two sub-back plates 31, without affecting the folding fit between the sub-back plate 31 and the sub-seat plate 11.

[0049] The mating surfaces of the handrail plate 2 iron frame and the sub-backrest plate 31 iron frame have corresponding coaxial circular connecting holes. An embedded nut is pre-installed inside the mating surface of the handrail plate 2 iron frame, with the nut specification matching the bolt. During assembly, the bolt is passed through the connecting hole from the outside of the sub-backrest plate 31 iron frame, threadedly connected to the embedded nut inside the handrail plate 2, and pre-tightened. This structure directly locks the vertical displacement of the sub-backrest plate 31 through the axial pre-tightening force of the bolt, while the fit between the bolt shank and the connecting hole restricts the horizontal movement of the handrail plate 2, achieving a rigid connection between the handrail plate 2 and the sub-backrest plate 31. Disassembly and assembly are convenient; simply loosening the bolt is sufficient for separation.

[0050] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0051] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A fully disassembled sofa, comprising: Sitting / reclining board (1); Two armrest boards (2) are respectively set on the left and right sides of the sitting / reclining board (1); A backrest (3) is provided on the rear side of the sitting / reclining board (1); A support structure (4) is disposed below the sitting / reclining board (1); characterized in that, The sum of the width of the armrest (2) and the width of the backrest (3) is less than or equal to the width of the seat / reclining board (1); the length of the backrest (3) is adapted to the length of the seat / reclining board (1), and the length of the armrest (2) is less than the length of the seat / reclining board (1); the backrest (3) and the armrest (2) can be stacked on the seat / reclining board (1), and when stacked, the armrest (2) and the backrest (3) are arranged along the width direction of the seat / reclining board (1), and an accommodating space for accommodating the support structure (4) is formed between the seat / reclining board (1), the armrest (2) and the backrest (3).

2. The fully detachable sofa according to claim 1, characterized in that: The seat / reclining board (1) is composed of at least two sub-seat boards (11) spliced ​​together, and each of the sub-seat boards (11) is detachable and stackable; the backrest board (3) is composed of at least two sub-backrest boards (31) spliced ​​together, and each of the sub-backrest boards (31) is detachable and stackable; the number of sub-backrest boards (31) is the same as the number of sub-seat boards (11).

3. The fully detachable sofa according to claim 1, characterized in that, The seat / reclining board (1) is composed of at least two sub-seat boards (11) spliced ​​together, and each of the sub-seat boards (11) is rotatably connected by a number of first hinges (61); the backrest board (3) is composed of at least two sub-backrest boards (31) spliced ​​together, and each of the sub-backrest boards (31) is rotatably connected to the corresponding sub-seat board (11) by a second hinge (62).

4. A fully detachable sofa according to claim 2, characterized in that: Hooks (51) and hanging flanges (52) are respectively connected to the thickness surfaces of the two adjacent sub-seat boards (11). The hanging flanges (52) have hanging spaces (521) and the hanging flanges (52) are hung on the hooks (51) through the hanging spaces (521) to form a fit between the two seat boards (1).

5. A fully detachable sofa according to claim 2, characterized in that: The thickness surfaces of two adjacent sub-plates (31) are respectively provided with a third sliding sub-component (302) and a third sliding mother-component (303); the third sliding sub-component (302) and the third sliding mother-component (303) cooperate to allow one of the sub-plates (31) to move along the width direction of the other sub-plate (31), and lock the two to move along the length direction.

6. A fully detachable sofa according to claim 1 or 2, characterized in that: The armrest board (2) includes an inner side (21) of the armrest facing the sitting area after the sofa is assembled, and an outer side (22) of the armrest corresponding to the inner side (21); a first sliding component (211) is provided on the lower side of the inner side (21), and a second sliding component (212) is provided on the side of the inner side (21) of the armrest close to the backrest board (3) after the sofa is assembled.

7. A fully detachable sofa according to claim 6, characterized in that: The thickness surface of the seat / reclining board (1) is provided with a first sliding female part (101) adapted to the first sliding sub-part (211); the first sliding sub-part (211) and the first sliding female part (101) cooperate to allow the armrest board (2) to move along the width direction of the seat / reclining board (1) and lock the armrest board (2) to move along the length direction of the seat / reclining board (1); the thickness surface of the backrest board (3) is provided with a second sliding female part (301) adapted to the second sliding sub-part (212); the second sliding sub-part (212) and the second sliding female part (301) cooperate to allow the backrest board (3) to move along the width direction of the armrest board (2) and lock the backrest board (3) to move along the length direction of the armrest board (2).

8. A fully detachable sofa according to claim 3, characterized in that: The armrest board (2) and the sub-backrest board (31) are locked together by a pin-type locking structure.

9. A fully detachable sofa according to claim 3, characterized in that: The armrest board (2) and the sub-seat board (11) are locked together by a locking system.

10. The fully detachable sofa according to claim 2 or 3, characterized in that: The two sub-plates (31) are detachably fixed together by angle iron (9), which is connected to the embedded nut pre-set on the sub-plate (31) by bolts.

Images