Folding sofa bed and packaging structure of folding sofa bed

Abstract

The utility model provides a folding sofa bed and a packaging structure thereof, a back frame comprises a left back frame and a right back frame which are detachably connected, and a seat frame comprises a left seat frame and a right seat frame which are detachably connected; the left armrest and the right armrest are rotationally connected with the left back frame and the right back frame through folding hinges respectively; the soft package cushion comprises a backrest part and a seat cushion part which are rotationally connected together; the elastic unit comprises a conical spring seat, and an opening face allowing other spring seats to be inserted therein is arranged at the large-area end of the spring seat. The folding chair further comprises a side supporting rod and a middle supporting rod, the side supporting rod is detachably connected between the left armrest and the right armrest, the side supporting rod comprises a connecting base and two connecting rods, and the connecting rods are rotationally connected with the connecting base so that the connecting rods can have an unfolding position and a folding position relative to the connecting base. The middle supporting rod extends in the direction parallel to the left handrail or the right handrail, and one end of the middle supporting rod is detachably connected with the connecting base.

Description

Technical Field

[0001] The utility model relates to a piece of furniture, in particular to a sofa bed. Background Art

[0002] As people's material lives improve, their demand for furniture is diversifying. Sofa beds have become a popular choice. Existing sofa beds have several drawbacks. For example, they struggle to switch smoothly between their two positions, making it difficult for operators with limited strength to do so alone. They can be unstable when used as a sofa, potentially changing the angle between the seat and backrest, affecting comfort. Furthermore, existing folding beds offer a limited number of folding methods, failing to meet the diverse needs of users.

[0003] Even if the aforementioned issues could be addressed, current sofa beds still suffer from numerous minor shortcomings. For example, the cushion and elastic layer are prone to relative movement during use; the base support structure of the sofa bed cannot support both the sofa and bed frames; the mounting method between the bed frame and the bed board of the main frame is unreasonable; and the various components of the sofa bed cannot be disassembled or folded, resulting in extremely large packaging and high shipping costs. Utility Model Content

[0004] The main technical problem to be solved by the utility model is to provide a folding sofa bed and a packaging structure thereof, which can reduce the packaging volume and lower the transportation cost.

[0005] In order to solve the above technical problems, the utility model provides a folding sofa bed, comprising: an elastic unit, a soft cushion, a left armrest, a right armrest and a bed frame; the bed frame comprises a seat frame and a back frame arranged in sequence along the width direction of the armrest;

[0006] The back frame includes a detachably connected left back frame and a right back frame, and the seat frame includes a detachably connected left seat frame and a right seat frame; the left armrest and the right armrest are rotatably connected to the left back frame and the right back frame respectively through a folding hinge;

[0007] The soft cushion includes a backrest portion and a seat cushion portion that are rotatably connected together; the elastic unit includes a conical spring seat, and an end of the spring seat with a larger area is provided with an opening surface for inserting the other spring seat;

[0008] It also includes a side support rod and a middle support rod, the side support rod is detachably connected between the left armrest and the right armrest, and the side support rod includes a connecting seat and two connecting rods, the connecting rod is rotatably connected to the connecting seat so that the connecting rod has an expanded position and a folded position relative to the connecting seat; the middle support rod extends in a direction parallel to the left armrest or the right armrest, and one end thereof forms a detachable connection with the connecting seat.

[0009] In a preferred embodiment: the left armrest and the right armrest respectively include two vertical poles and a horizontal pole connected between the two vertical poles, and one end of the folding hinge is fixed to the horizontal pole;

[0010] The two uprights are also connected by a reinforcing connecting rod, a portion of which is recessed inward to form a concave portion, so that when the left armrest and the right armrest are stacked, the concave portions of the left armrest and the right armrest are staggered and limited in the horizontal direction.

[0011] In a preferred embodiment: the connection between the folding hinge and the cross bar is located on one side of the symmetry axis of the cross bar, so that when the left armrest and the right armrest are stacked, a first space for placing the elastic unit is formed between the folding hinge and the other side of the symmetry axis of the cross bar, and a second space for placing the elastic unit is formed between the vertical pole and the reinforcing link.

[0012] In a preferred embodiment: the connecting seat includes a horizontal part and a vertical part arranged perpendicular to the horizontal part; the horizontal part is used to be rotatably connected to the connecting rod, and the vertical part is used to form a detachable connection with the middle support rod.

[0013] In a preferred embodiment: the middle support rod comprises a middle support rod body and a middle support leg, and the middle support rod body is detachably connected between the vertical portion and the middle support leg;

[0014] The vertical part and the middle support foot are respectively provided with at least one connecting port along the height direction; both ends of the middle support rod body are respectively provided with L-shaped ribs that cooperate with the connecting port, and one end of the L-shaped rib is connected to the middle support rod body to form a downward-opening slot between the L-shaped rib and the middle support rod body.

[0015] In a preferred embodiment: the folding hinge includes a first arm and a second arm hingedly connected at one end; the other end of the first arm is fixedly connected to the left armrest or the right armrest, and the other end of the second arm forms a detachable connection with the left back frame or the right back frame.

[0016] In a preferred embodiment, connectors for connecting the elastic units are arranged in an array on the left back frame, the right back frame, the left seat frame and the right seat frame.

[0017] In a preferred embodiment, the connector protrudes outward along the thickness direction of the back frame or the seat frame and presents a cross shape.

[0018] In a preferred embodiment, a slot that cooperates with the connector is provided at the end of the spring seat with a smaller area.

[0019] In a preferred embodiment, a clamping groove is provided at the edge of the end of the spring seat with a larger area, and the clamping grooves of two adjacent spring seats are connected together by a clamping piece.

[0020] In a preferred embodiment: the clamping member includes two clamping parts and an elastic part connected between the clamping parts;

[0021] The clamping portion includes an elastic clamping block.

[0022] In a preferred embodiment: the left seat frame and the right seat frame are opposite to each other on one side, and the left back frame and the right back frame are opposite to each other on one side, respectively, so that the left back frame and the right back frame, and the left seat frame and the right seat frame can be detachably connected together through the sockets and the plugs.

[0023] In a preferred embodiment, screw holes are respectively provided at the bottom of the left seat frame and the right seat frame to connect the frame support legs through the screw holes.

[0024] The utility model also provides a packaging structure for a folding sofa bed, comprising a packaging box and the folding sofa bed as described above;

[0025] When the folding sofa bed is packaged and placed in a packaging box, the soft cushion is folded so that the seat cushion part and the backrest part are arranged facing each other, and the left seat frame and the right seat frame are respectively placed on both sides of the soft cushion along the thickness direction; the left back frame and the right back frame are stacked and placed on top of the soft cushion, and the left armrest and the right armrest are stacked and placed on top of the back frame; after the elastic units are sequentially nested and stacked, they are placed flat in the space inside the armrest and in the space between the armrest and the wallpaper piece on the side of the packaging box.

[0026] The utility model also provides a packaging structure for a folding sofa bed, comprising a packaging box and the folding sofa bed as described above;

[0027] When the folding sofa bed is packaged and placed in a packaging box, the soft cushion is folded so that the seat cushion part and the backrest part are arranged facing each other, and the left seat frame and the right seat frame are respectively placed on both sides of the soft cushion along the thickness direction; the left back frame and the right back frame are stacked and placed above the soft cushion, and the left armrest and the right armrest are stacked and placed above the back frame; the elastic units are sequentially nested and stacked to form a first stacking part and a second stacking part, the first stacking part is arranged in a first space, and the second stacking part is arranged in a second space.

[0028] The utility model also provides a packaging structure for a folding sofa bed, comprising a packaging box and the folding sofa bed as described above;

[0029] When the folding sofa bed is packaged and placed in a packaging box, the soft cushion is folded so that the seat cushion part and the backrest part are arranged facing each other, and the left seat frame and the right seat frame are respectively placed on both sides of the soft cushion along the thickness direction; the left back frame and the right back frame are stacked and placed on top of the soft cushion, and the connectors of the left back frame and the right back frame are arranged back to back; the left armrest and the right armrest are stacked and placed on top of the back frame; after the elastic units are sequentially socketed and stacked, they are placed flat in the space inside the armrest and in the space between the armrest and the wallpaper piece on the side of the packaging box.

[0030] In a preferred embodiment, the side support rod is placed in a folded state between the soft cushion and the left seat frame or the soft cushion and the right seat frame.

[0031] In a preferred embodiment, the middle support rod is placed between the left back frame and the right back frame.

[0032] Compared with the existing technology, the technical solution of the utility model has the following beneficial effects:

[0033] The utility model also provides a packaging structure for a foldable sofa bed, which can reduce the packaging volume and transportation cost by folding and stacking various components. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a schematic diagram of a folding sofa bed in a preferred embodiment of the present invention;

[0035] Figure 2 This is an exploded view of a folding sofa bed in a preferred embodiment of the present invention;

[0036] Figure 3 This is a schematic diagram of a folding sofa bed in a preferred embodiment of the present invention after the soft cushions are removed;

[0037] Figure 4 This is a schematic diagram of a soft pad in a preferred embodiment of the present invention;

[0038] Figure 5-Figure 13 This is a schematic diagram of the assembly of a folding sofa bed in a preferred embodiment of the present invention;

[0039] Figure 14 for Figure 7 A partial enlarged view of

[0040] Figure 15 for Figure 13 A partial enlarged view of

[0041] Figure 16 This is a schematic diagram of a folding sofa with its backrest laid flat in a preferred embodiment of the present invention;

[0042] Figure 17 and Figure 18 This is a schematic diagram of the packaging method of the folding sofa bed in the preferred embodiment of the present utility model;

[0043] Figure 19 This is a schematic diagram of the packaging of a folding sofa bed in a preferred embodiment of the present utility model;

[0044] Figure 20 This is another packaging diagram of the folding sofa bed in the preferred embodiment of the present utility model. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0046] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships depicted in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0047] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] refer to Figures 1-16 This embodiment provides a folding sofa bed, comprising: an elastic unit 1, a soft cushion 2, a left armrest 3, a right armrest 4 and a bed frame; the bed frame comprises a seat frame and a back frame sequentially arranged along the width direction of the armrest;

[0049] The back frame includes a detachably connected left back frame 5 and a right back frame 6, and the seat frame is divided into a detachably connected left seat frame 7 and a right seat frame 8; the left armrest 3 and the right armrest 4 are rotatably connected to the left back frame 5 and the right back frame 6 via a folding hinge 31 and 41 respectively; in this way, the back frame can be rotated relative to the seat frame, so that the entire sofa bed has a backrest state and a lying state.

[0050] The soft cushion 2 includes a backrest portion 21 and a seat cushion portion 22 that are rotatably connected together; in this way, the backrest portion 21 of the soft cushion 2 can also rotate relative to the seat cushion portion 22 along with the back frame, thereby changing the angle between the two.

[0051] In this embodiment, to facilitate storage of the elastic units 1, a stackable design is employed. To this end, the elastic units 1 include a conical spring seat 11, with an opening 12 at one end having a larger area for inserting other spring seats 11. Thus, two adjacent elastic units 1 can be stacked by inserting the spring seats 11 into each other.

[0052] In order to connect the left and right armrests 3 and 4 and increase stability, this embodiment also includes a side support rod 91 and a middle support rod 92. The side support rod 91 is detachably connected between the left and right armrests 3 and 4. The side support rod 91 includes a connecting base 911 and two connecting rods 912. The connecting rods 912 are rotatably connected to the connecting base 911 so that they have an extended position and a retracted position relative to the connecting base 911. The middle support rod 92 extends in a direction parallel to the left and right armrests 3 and 4, and one end thereof is detachably connected to the connecting base 911. The addition of a middle support rod 92 between the two armrests avoids the instability caused by the lack of support in the middle portion of the seat frame.

[0053] The connecting base 911 needs to perform two functions: connecting to the connecting rod 912 and connecting to the middle support rod 92. To this end, the connecting base 911 includes a horizontal portion and a vertical portion arranged perpendicular to the horizontal portion. The horizontal portion is used for rotational connection with the connecting rod 912, and the vertical portion is used to form a detachable connection with the middle support rod 92. The rotational connection between the horizontal portion and the connecting rod 912 is mainly achieved by connecting the connecting rod 912 via damping pins on both sides of the horizontal portion. The vertical portion and the middle support leg are each provided with two connection ports 913 along the height direction. The number of connection ports 913 can be increased or decreased as needed.

[0054] The connection port 913 is used to connect with the middle support rod 92 to form the aforementioned detachable connection. To this end, the middle support rod 92 includes a middle support rod body 921 and a middle support foot 922. The middle support rod body 921 is detachably connected between the vertical portion and the middle support foot 922. Specifically, to achieve the aforementioned connection, both ends of the middle support rod 92 body are provided with L-shaped ribs that cooperate with the connection port 913. One end of the L-shaped rib is connected to the middle support rod body 921 to form a downward-opening slot between the L-shaped rib and the middle support rod body 921. During installation, a portion of the L-shaped rib is first inserted into the connection port 913, the slot is positioned above the side wall of the connection port 913, and then the middle support rod body 921 is moved downward as a whole so that the side wall of the connection port 913 is inserted into the slot to complete the connection of the middle support rod 92.

[0055] In addition, the left and right armrests 3 and 4 in this embodiment each include two vertical rods 32 and 42 and a crossbar 33 and 43 connected between the two vertical rods 32 and 42 to form a semi-enclosed shape. One end of the folding hinge 31 and 41 is fixed to the crossbar 33 and 43. The two vertical rods 32 and 42 are further connected by a reinforcing link 34 and 44. A portion of the reinforcing link 34 and 44 is recessed inward to form a concave portion 341 and 441. When the left and right armrests 3 and 4 are stacked, the two concave portions 341 and 441 can be staggered by slightly staggering the left and right armrests 3 and 4 in the height direction. The staggered concave portions 341 and 441 of the left and right armrests 3 and 4 are engaged in a horizontally limited manner. This ensures that the left and right armrests 3 and 4 are horizontally limited when stacked, making them less likely to loosen during packaging.

[0056] In order to minimize the volume of the packaging, the connection between the folding hinges 31, 41 and the cross bars 33, 43 is located on one side of the symmetry axis of the cross bars 33, 43. The folding hinges 31, 41 are offset so that when the left armrest 3 and the right armrest 4 are stacked, a first space for placing the elastic unit 1 is formed between the folding hinges 31, 41 and the other side of the symmetry axis of the cross bars 33, 43, and a second space for placing the elastic unit 1 is formed between the vertical bars 32, 42 and the reinforcing links 34, 44.

[0057] Furthermore, to achieve a detachable connection between the folding hinge 31, 41 and the left or right back frame 5, 6, the folding hinge 31, 41 includes a first arm 311, 411 hingedly connected at one end to a second arm 312, 412. The other end of the first arm 311, 411 is fixedly connected to the left or right armrest 3, 4, while the other end of the second arm 312, 412 is detachably connected to the left or right back frame 5, 6. Specifically, a connecting plate 313, 413 is provided at the other end of the second arm 312, 412. The connecting plate 313, 413 has mounting holes, allowing the other end of the second arm 312, 412 to be secured to the left or right back frame 5, 6 via bolts. To disassemble, the bolts can be loosened.

[0058] To install the elastic unit 1 on the back frame and seat frame, connectors 51, 61, 71, and 81 for connecting to the elastic unit 1 are arranged in an array on the left back frame 5, right back frame 6, left seat frame 7, and right seat frame 8, respectively. In this embodiment, the connectors 51, 61, 71, and 81 protrude outward along the thickness of the back frame or seat frame and form a cross shape. As a simple alternative, the connectors 51, 61, 71, and 81 may also have other shapes, such as a straight line. To facilitate plug-in mating with the connectors 51, 61, 71, and 81, the smaller end of the spring seat 11 is provided with a slot that mates with the connectors 51, 61, 71, and 81.

[0059] Furthermore, to prevent the elastic units 1 from tilting due to stress during use, which can lead to a poor user experience, a snap-in groove 13 is provided at the edge of the larger end of the spring seat 11. The snap-in grooves 13 of two adjacent spring seats 11 are connected together by a snap-in member 14. This allows all elastic units 1 arranged in an array to be connected together, greatly improving stability.

[0060] In this embodiment, the engaging member 14 includes two engaging portions and an elastic portion connected between the engaging portions; the engaging portion includes an elastic block. When the elastic block is inserted into the engaging slot 13, it is squeezed and deformed, accumulating an elastic restoring force. When the elastic block is further inserted until the squeezing force disappears, the elastic block returns to its original position under the action of the elastic restoring force, thereby engaging with the engaging slot 13.

[0061] Finally, to connect the left and right seat frames, the left and right back frames 5 and 6, and the left and right seat frames 7 and 8, the left and right back frames 5 and 6 are provided with sockets 52, 62, 72, and 82 on their facing sides. These sockets 52, 62, 72, and 82 allow the left and right back frames 5 and 6, and the left and right seat frames 7 and 8 to be detachably connected together via the sockets 52, 62, 72, and 82 and the posts 94. The bottoms of the left and right seat frames 7 and 8 are provided with screw holes for connecting to the frame support legs 93.

[0062] refer to Figure 17-Figure 19 , this embodiment also provides a packaging structure for a folding sofa bed, comprising a packaging box and the folding sofa bed as described above;

[0063] When the folding sofa bed is packed into a packaging box, the soft cushion 2 is folded so that the seat cushion portion 22 and the backrest portion 21 are arranged facing each other, and the left seat frame 7 and the right seat frame 8 are respectively placed on both sides of the soft cushion 2 in the thickness direction; the left back frame 5 and the right back frame 6 are stacked and placed on top of the soft cushion 2, and the left armrest 3 and the right armrest 4 are stacked and placed on top of the back frame;

[0064] The elastic units 1 are sequentially nested and stacked to form a first stacking portion and a second stacking portion. The first stacking portion is disposed in a first space, and the second stacking portion is disposed in a second space.

[0065] This packaging method places several main components in the packaging box, while the side support rods 91 and the middle support rods 92 can be placed separately in the accessory bag.

[0066] refer to Figure 20 , this embodiment also provides a packaging structure for a folding sofa bed, comprising a packaging box and the folding sofa bed as described above;

[0067] When the foldable sofa bed is packaged and placed in a box, the soft cushion 2 is folded so that the seat portion 22 and the backrest portion 21 face each other. The left and right seat frames 7 and 8 are placed on either side of the soft cushion 2 along its thickness direction. The left and right back frames 5 and 6 are stacked and placed on top of the soft cushion 2, with their connectors 51, 61, 71, and 81 facing each other. The left and right armrests 3 and 4 are stacked and placed on top of the back frame. The elastic units 1 are stacked and nested in sequence, lying flat within the space within the armrests and between the armrests and the side wallpaper of the box. The side support rods 91 are placed in a folded state between the soft cushion 2 and the left seat frame 7 or the right seat frame 8, and the center support rods 92 are placed between the left and right back frames 5 and 6. This allows the side support rods 91 and center support rods 92 to be placed in the box.

[0068] The above is only a preferred specific implementation method of the present invention, but the design concept of the present invention is not limited to this. Any technician familiar with the technical field who uses this concept to make non-substantial changes to the present invention within the technical scope disclosed by the present invention shall be deemed to infringe the protection scope of the present invention.

Claims

1. A folding sofa bed, characterized in that include: An elastic unit, a soft cushion, a left armrest, a right armrest and a bed frame; the bed frame includes a seat frame and a back frame arranged in sequence along the width direction of the armrest; The back frame includes a detachably connected left back frame and a right back frame, and the seat frame includes a detachably connected left seat frame and a right seat frame; the left armrest and the right armrest are rotatably connected to the left back frame and the right back frame respectively through a folding hinge; The soft cushion includes a backrest portion and a seat cushion portion that are rotatably connected together; the elastic unit includes a conical spring seat, and an end of the spring seat with a larger area is provided with an opening surface for inserting the other spring seat; It also includes a side support rod and a middle support rod, the side support rod is detachably connected between the left armrest and the right armrest, and the side support rod includes a connecting seat and two connecting rods, the connecting rod is rotatably connected to the connecting seat so that the connecting rod has an expanded position and a folded position relative to the connecting seat; the middle support rod extends in a direction parallel to the left armrest or the right armrest, and one end thereof forms a detachable connection with the connecting seat.

2. The folding sofa bed according to claim 1, characterized in that: The left armrest and the right armrest respectively include two vertical poles and a horizontal pole connected between the two vertical poles, and one end of the folding hinge is fixed to the horizontal pole; The two uprights are also connected by a reinforcing connecting rod, a portion of which is recessed inward to form a concave portion, so that when the left armrest and the right armrest are stacked, the concave portions of the left armrest and the right armrest are staggered and limited in the horizontal direction.

3. The folding sofa bed according to claim 2, characterized in that: The connection between the folding hinge and the cross bar is located on one side of the symmetry axis of the cross bar, so that when the left armrest and the right armrest are stacked, a first space for placing the elastic unit is formed between the folding hinge and the other side of the symmetry axis of the cross bar, and a second space for placing the elastic unit is formed between the vertical pole and the reinforcing link.

4. The folding sofa bed according to claim 1, characterized in that: The connecting seat includes a horizontal part and a vertical part arranged perpendicular to the horizontal part; the horizontal part is used to be rotatably connected to the connecting rod, and the vertical part is used to form a detachable connection with the middle support rod.

5. The folding sofa bed according to claim 4, characterized in that: The middle support rod comprises a middle support rod body and a middle support leg, wherein the middle support rod body is detachably connected between the vertical portion and the middle support leg; The vertical part and the middle support foot are respectively provided with at least one connecting port along the height direction; both ends of the middle support rod body are respectively provided with L-shaped ribs that cooperate with the connecting port, and one end of the L-shaped rib is connected to the middle support rod body to form a downward-opening slot between the L-shaped rib and the middle support rod body.

6. The folding sofa bed according to claim 1, characterized in that: The folding hinge includes a first arm and a second arm hingedly connected at one end; the other end of the first arm is fixedly connected to the left armrest or the right armrest, and the other end of the second arm forms a detachable connection with the left back frame or the right back frame.

7. The folding sofa bed according to claim 1, characterized in that: Connectors for connecting the elastic units are respectively arranged in an array on the left back frame, the right back frame, the left seat frame and the right seat frame.

8. The folding sofa bed according to claim 7, characterized in that: The connector protrudes outward along the thickness direction of the back frame or the seat frame and presents a cross shape.

9. The folding sofa bed according to claim 8, characterized in that: The end of the spring seat with a smaller area is provided with a slot that matches the plug-in component.

10. The folding sofa bed according to claim 9, characterized in that: A clamping groove is provided at the edge of one end of the spring seat with a larger area, and the clamping grooves of two adjacent spring seats are connected together by a clamping piece.

11. The folding sofa bed according to claim 10, characterized in that: The clamping member includes two clamping parts and an elastic part connected between the clamping parts; The clamping portion includes an elastic clamping block.

12. The folding sofa bed according to claim 1, characterized in that: The left and right seat frames are provided with sockets on the sides facing each other, and the left and right back frames are provided with sockets on the sides facing each other, so that the left and right back frames, and the left and right seat frames can be detachably connected together through the sockets and the plug posts.

13. The folding sofa bed according to claim 1, characterized in that: The bottoms of the left seat frame and the right seat frame are respectively provided with screw holes for connecting the frame support legs through the screw holes.

14. A packaging structure for a folding sofa bed, characterized by: A folding sofa bed comprising a packing box and any one of claims 1 to 13; When the folding sofa bed is packaged and placed in a packaging box, the soft cushion is folded so that the seat cushion part and the backrest part are arranged facing each other, and the left seat frame and the right seat frame are respectively placed on both sides of the soft cushion along the thickness direction; the left back frame and the right back frame are stacked and placed on top of the soft cushion, and the left armrest and the right armrest are stacked and placed on top of the back frame; after the elastic units are sequentially nested and stacked, they are placed flat in the space inside the armrest and in the space between the armrest and the wallpaper piece on the side of the packaging box.

15. A packaging structure for a folding sofa bed, characterized by: Comprising a packing box and the folding sofa bed according to claim 3; When the foldable sofa bed is packed into a packing box, the soft cushion is folded so that the seat cushion portion and the backrest portion are arranged facing each other, and the left seat frame and the right seat frame are respectively placed on both sides of the soft cushion in the thickness direction; the left back frame and the right back frame are stacked and placed on top of the soft cushion, and the left armrest and the right armrest are stacked and placed on top of the back frame; The elastic units are sequentially nested and stacked to form a first stacking portion and a second stacking portion. The first stacking portion is disposed in a first space, and the second stacking portion is disposed in a second space.

16. A packaging structure for a folding sofa bed, characterized by: Comprising a packing box and the folding sofa bed according to claim 7; When the folding sofa bed is packaged and placed in a packaging box, the soft cushion is folded so that the seat cushion part and the backrest part are arranged facing each other, and the left seat frame and the right seat frame are respectively placed on both sides of the soft cushion along the thickness direction; the left back frame and the right back frame are stacked and placed on top of the soft cushion, and the connectors of the left back frame and the right back frame are arranged back to back; the left armrest and the right armrest are stacked and placed on top of the back frame; after the elastic units are sequentially socketed and stacked, they are placed flat in the space inside the armrest and in the space between the armrest and the wallpaper piece on the side of the packaging box.

17. The packaging structure of a folding sofa bed according to claim 14, 15 or 16, characterized in that: The side support rod is placed between the soft pad and the left seat frame or the soft pad and the right seat frame in a folded state.

18. The packaging structure of a folding sofa bed according to claim 14, 15 or 16, characterized in that: The middle support rod is placed between the left back frame and the right back frame.

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