Backrest framework, sofa backrest, sofa framework, sofa and packaging method

Abstract

The invention belongs to the technical field of furniture, and discloses a backrest framework, a sofa backrest, a sofa framework, a sofa and a packaging method.The backrest framework comprises a backrest body which is of a rectangular frame structure, and the lower end of the backrest body is provided with two installation parts arranged at intervals in the width direction; the first ends of the connecting pieces are detachably connected to the mounting part, the second ends of the connecting pieces are provided with connecting insertion pieces, and the connecting insertion pieces are configured to be inserted into the base framework; a containing cavity capable of containing the two connecting pieces is formed in the backrest body. When the backrest framework is transported, the connecting pieces connected to the backrest main body are detached and placed into the containing cavity of the backrest main body, so that the effects of reducing the size and the occupied space are achieved, the number of single transportation is increased, and the transportation cost of a single sofa is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of furniture, and in particular to a backrest frame, a sofa backrest, a sofa frame, a sofa and a packaging method. Background Art

[0002] As the core furniture of modern homes, sofas are composed of a seat frame, backrest frame, armrest frame, filling material, and outer covering. When transporting sofas, they are usually disassembled and packaged to reduce the difficulty of handling and reduce the space occupied.

[0003] In existing technology, most backrest frames utilize an integrated or fixed connection structure, resulting in a fixed, incompressible volume upon fabrication. This rigid structure results in a bulky and fixed backrest frame, requiring a significant amount of space for transportation. This reduces the number of sofas shipped per trip and increases the shipping cost of each sofa. Furthermore, sofas require significant storage space during storage, resulting in high inventory costs, complex space management, and a significant labor burden during assembly and disassembly. Summary of the Invention

[0004] The object of the present invention is to provide a backrest frame, a sofa backrest, a sofa frame, a sofa and a packaging method, which can reduce the storage space occupied during transportation, increase the single transportation quantity, and reduce the transportation cost of a single sofa.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] In a first aspect, a backrest frame is provided, comprising:

[0007] The backrest body is configured as a rectangular frame structure, and the lower end of the backrest body is provided with two mounting portions spaced apart in the width direction;

[0008] Two connecting members, wherein the first ends of the connecting members are detachably connected to the mounting portion, and the second ends of the connecting members are provided with connecting plugs, and the connecting plugs are configured to be inserted into the base frame;

[0009] An accommodating cavity capable of accommodating the two connecting members is provided in the backrest body.

[0010] As an optional technical solution for the backrest frame, a notch is provided at the bottom of the mounting portion, and the notch is provided on a side of the backrest body away from the supporting surface;

[0011] The connecting member includes a main body and a first reinforcement portion. The main body and the first reinforcement portion extend in the same direction and are arranged at an angle to each other. The main body is connected to the backrest body, and the first reinforcement portion extends into the notch and presses against the top of the notch.

[0012] As an optional technical solution for the backrest frame, a second reinforcement portion is provided at one end of the connecting member away from the backrest body, the main body and the second reinforcement portion are arranged at an angle, the first reinforcement portion and the second reinforcement portion are bent in the same direction, and the first reinforcement portion and the second reinforcement portion are welded and fixed.

[0013] As an optional technical solution for the backrest frame, the main body, the first reinforcement part and the second reinforcement part are formed in one piece.

[0014] As an optional technical solution for the backrest frame, the connecting member is configured as a hollow square tube structure, and along the width direction of the backrest body, the first end of the connecting member and the second end of the connecting member are staggered.

[0015] As an optional technical solution for the backrest frame, the connecting member includes two connecting sections and a transition section, both ends of the transition section are respectively connected to the two connecting sections, one of the two connecting sections serves as the first end of the connecting member and is detachably connected to the backrest body, and the other serves as the second end of the connecting member and is connected to the connecting plug-in;

[0016] The two connecting sections are arranged in parallel, and the transition section is arranged at an angle to the two connecting sections.

[0017] As an optional technical solution for the backrest frame, the transition section is bent relative to the first end of the connecting member away from the other connecting member, and the connecting plug is detachably connected to the inner side of the connecting member facing the other connecting member; or

[0018] The transition section is bent relative to the first end of the connecting member toward the other connecting member, and the connecting plug is detachably connected to the outer side surface of the connecting member facing away from the other connecting member.

[0019] As an optional technical solution of the backrest frame, the backrest frame further includes a cushioning member, and the cushioning member is clamped between the second end of the connecting member and the connecting plug-in.

[0020] In a second aspect, a sofa backrest is further provided, comprising an outer covering and the backrest frame as described above, wherein the outer covering is covered on the backrest frame.

[0021] In a third aspect, a sofa frame is provided, comprising at least two frame units, wherein the frame units include a base frame and the backrest frame as described above, wherein the base frame is provided with at least two slots, wherein the slots are configured to be plugged into and matched with the connecting plug;

[0022] The base frame is provided with a hanging piece on a side surface in the width direction, and the hanging piece is used to hang the hanging piece on another base frame to connect two adjacent frame units.

[0023] As an optional technical solution for the sofa frame, the base frame is provided with a bottom connecting rod extending along its width direction, the hanging piece is provided at the end of the bottom connecting rod, and the hanging piece and the bottom connecting rod are integrally formed; or

[0024] The hanging member is detachably connected to the bottom connecting rod.

[0025] As an optional technical solution for the sofa frame, two bottom connecting rods are arranged at intervals along the front-to-back direction of the base frame, wherein the clamping direction of the hanging part on one of the bottom connecting rods is horizontal, and the clamping direction of the hanging part on the other bottom connecting rod is vertical.

[0026] As an optional technical solution for the sofa frame, the hanging member includes a hanging portion, which is spaced apart from the main body of the base frame to form a hanging groove. When the two hanging members cooperate with each other, the hanging portion on one hanging member is inserted into the hanging groove of the other hanging member.

[0027] In a fourth aspect, a sofa is further provided, comprising an outer covering and the sofa frame as described above, wherein the outer covering covers the backrest frame and the base frame.

[0028] In a fifth aspect, a packaging method is also provided for packaging the sofa as described above, the packaging method comprising the following steps:

[0029] splitting a plurality of adjacent skeleton units;

[0030] removing the outer covering;

[0031] Pulling the connecting plug out of the slot of the base frame to separate the backrest frame from the base frame;

[0032] Remove the connecting piece from the backrest body;

[0033] placing and fixing the connecting member and at least a portion of the outer covering in the accommodating cavity;

[0034] The backrest frame and the base frame are packed together.

[0035] Beneficial effects of the present invention:

[0036] The present invention provides a backrest frame and a sofa backrest. The two connecting members of the backrest frame are detachable from the backrest body, and the backrest body is provided with a receiving cavity capable of accommodating the two connecting members. During transportation or storage, the connecting members are removed from the backrest body and placed in the receiving cavity of the backrest body for securement, thereby reducing the size and space occupied, thereby increasing the number of sofas that can be transported in a single shipment and reducing the transportation cost of a single sofa.

[0037] The present invention provides a sofa frame and a sofa. The sofa frame includes at least two frame units. The frame units include a base frame and a backrest frame. The base frame is provided with a hanging piece on the side in the width direction. The hanging piece is used to hang the hanging piece on another base frame. The two adjacent frame units are connected and fixed to each other through the cooperation between the relative hanging pieces, so as to improve the disassembly and assembly efficiency and reduce the manpower burden.

[0038] The present invention provides a packaging method, which places the removed connecting parts and at least part of the outer covering in the accommodating cavity of the backrest frame, and packs the backrest frame and the base frame together, thereby reducing the packaging volume, improving the container loading rate, and reducing transportation costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a backrest frame in the prior art;

[0040] Figure 2 is a schematic structural diagram of a backrest frame provided in the first embodiment of the present invention;

[0041] Figure 3 is an exploded view of the backrest frame provided in the first embodiment of the present invention;

[0042] Figure 4 yes Figure 3 A partial enlarged view of point A in the middle;

[0043] Figure 5 This is a structural diagram of a backrest frame when the cushion provided by the second embodiment of the present invention is arranged on the inner side of the connecting member;

[0044] Figure 6 is an exploded view of the backrest frame provided in the second embodiment of the present invention;

[0045] Figure 7 yes Figure 6 A partial enlarged view of point B in the middle;

[0046] Figure 8 This is a schematic structural diagram of a backrest frame when the cushion provided in the second embodiment of the present invention is arranged outside the connecting member;

[0047] Figure 9 Schematic diagram comparing the dimensions of the backrest frames provided by the prior art, embodiment 1, and embodiment 2;

[0048] Figure 10 This is a schematic diagram of the dimensions of the backrest frames provided by the prior art, embodiment 1, and embodiment 2 when packaged and transported;

[0049] Figure 11 This is a structural diagram of a sofa provided in a third embodiment of the present invention;

[0050] Figure 12 is a schematic diagram of the connection structure between multiple skeleton units provided in Example 3 of the present invention;

[0051] Figure 13 Schematic diagram of the matching structure of the bottom connecting rod and the hanging member provided in the third embodiment of the present invention;

[0052] Figure 14 This is a flowchart of the steps of the packaging method provided in the fourth embodiment of the present invention.

[0053] In the picture:

[0054] 1. Backrest body; 11. First fastening hole; 12. Notch; 13. Lower crossbeam; 101. Mounting portion;

[0055] 2. Connector; 20. Main body; 21. First reinforcement; 22. Second reinforcement; 23. First connection hole; 24. Positioning hole; 25. Second fastening hole; 26. Connecting section; 27. Transition section; 28. Fourth connection hole;

[0056] 3. Connecting plug-in; 31. Second connecting hole;

[0057] 4. First fastener; 5. Second fastener; 6. Pad; 61. Positioning portion; 62. Third connecting hole.

[0058] 100, frame unit; 200, backrest frame; 300, base frame; 400, outer covering;

[0059] 7. Bottom connecting rod; 71. Mounting plate;

[0060] 8. Hanging member; 81. Hanging portion; 82. Hanging slot. DETAILED DESCRIPTION

[0061] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It will be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all structures.

[0062] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific circumstances.

[0063] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0064] In the description of this embodiment, terms such as "upper," "lower," and "right" are used to refer to positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0065] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0066] Reference Figure 1 , is a backrest frame commonly used in the prior art. The backrest frame is an integrated fixed connection structure with a fixed volume. It cannot be disassembled during transportation and occupies a large space.

[0067] Example 1:

[0068] This embodiment provides a sofa backrest, which includes an outer covering and a backrest frame. The outer covering is covered on the backrest frame. Figures 2 to 4As shown, the backrest frame includes a backrest body 1 and two connectors 2. The backrest body 1 is a rectangular frame structure. Two mounting portions 101 are provided at the lower end of the backrest body 1, spaced apart along the width of the backrest body 1. The two connectors 2 are spaced apart along the width of the backrest body 1. The first ends of the connectors 2 are detachably connected to the mounting portions 101. The second ends of the connectors 2 are provided with connector plugs 3, which are configured to be inserted into the base frame to mount the sofa backrest to the base frame. The backrest body is provided with a receiving cavity capable of accommodating the two connectors 2. When transporting the sofa backrest or backrest frame, the connectors 2 connected to the backrest body 1 are removed and placed into the receiving cavity of the backrest body 1 to reduce the volume and space occupied, thereby increasing the number of sofas that can be transported at a time and reducing the transportation cost of a single sofa.

[0069] Furthermore, the outer covering includes a backrest bag, which includes a face cover and a soft bag placed in the face cover. The face cover has an inner cavity that can be opened and closed by a zipper. During transportation, the backrest bag can be removed from the backrest frame, the soft bag can be taken out of the inner cavity, and the face cover can be placed in the accommodating cavity of the backrest body 1 to further compress the packaging volume.

[0070] Specifically, the base frame is provided with at least two slots, which are configured to be plugged into and matched with the connecting plug-in 3. The connecting plug-in 3 is an existing conventional structure, and its specific structure and principle refer to the existing technology and are not described here.

[0071] Optionally, refer to Figure 2-Figure 4 A notch 12 is provided at the bottom of the backrest main body 1, and the notch 12 is provided on the side of the backrest main body 1 away from the supporting surface; the connecting member 2 includes a main body 20 and a first reinforcement part 21, the main body 20 and the first reinforcement part 21 extend in the same direction, and the main body 20 and the first reinforcement part 21 are arranged at an angle, the main body 20 is connected to the backrest main body 1, and the first reinforcement part 21 is arranged corresponding to the side of the backrest main body 1 away from the supporting surface, the first reinforcement part 21 extends into the notch 12 and presses against the top of the notch 12.

[0072] Specifically, refer to Figure 2-Figure 4The backrest body 1 also includes a bottom crossbeam 13, which is installed at a position lower than the backrest body 1. The bottom crossbeam 13 is provided on one side of the supporting surface of the backrest body 1. The setting of the notch 12 enables the installation position of the bottom crossbeam 13 to be as close as possible to the bottom end of the backrest body 1 without protruding in the horizontal direction, thereby ensuring the supporting comfort and controlling the overall volume. Generally speaking, the setting of the notch structure will affect the overall strength of the backrest frame, and the upper end of the first reinforcement part 21 is inserted into the notch 12 to make up for the structural strength. The upper end of the first reinforcement part 21 supports the top of the notch 12, and when the backrest is under pressure, part of the backward pressure can be converted into downward pressure, thereby improving the load-bearing stability. On the other hand, when assembling the connector 2 and the backrest body 1, the setting of the notch 12 can realize the preliminary positioning and connection limit of the connector 2, which is convenient for subsequent assembly and fixation, reduces the difficulty of assembly, and is conducive to improving assembly efficiency.

[0073] Optionally, the main body 20 and the first reinforcement portion 21 are integrally formed, and the first reinforcement portion 21 is formed by bending, and has higher strength than a plate-shaped or sheet-shaped structure.

[0074] In this embodiment, the first reinforcement portion 21 and the main body portion 20 are perpendicular to each other.

[0075] Optionally, refer to Figure 4 The end of the connector 2 away from the backrest body 1 is provided with a second reinforcement portion 22. The main body 20 and the second reinforcement portion 22 are arranged at an angle. The first reinforcement portion 21 and the second reinforcement portion 22 are bent in the same direction and are welded to each other. Furthermore, the main body 20 and the second reinforcement portion 22 are integrally formed, and the second reinforcement portion 22 is formed by bending. In other words, the connector 2 is provided with flanges on two adjacent sides, and the two flanges are welded to enhance the overall strength of the connector 2 and ensure a stable connection between the backrest frame and the base frame.

[0076] In this embodiment, the connecting member 2 is made of sheet metal material, and the first reinforcement portion 21 and the second reinforcement portion 22 are formed by bending and flanging.

[0077] For further information, please refer to Figure 4 The backrest frame also includes a plurality of first fasteners 4. A plurality of first connection holes 23 are defined at the first end of the connector 2. The first connection holes 23 are specifically defined in the main body 20. The backrest body 1 is defined with a plurality of first fastening holes 11, which are defined in the mounting portion 101. The first fasteners 4, the first connection holes 23, and the first fastening holes 11 correspond one to one. The first fasteners 4 pass through the first connection holes 23 and are screwed into the corresponding first fastening holes 11 to achieve a detachable connection between the connector 2 and the backrest body 1, making operation simple and convenient.

[0078] For example, please refer to Figure 4 In this embodiment, there are three first fasteners 4, three first connecting holes 23 and three first fastening holes 11, and the first fasteners 4 are bolts, the first connecting holes 23 are through holes, and the first fastening holes 11 are threaded holes. In other embodiments, the number of first fasteners 4, first connecting holes 23 and first fastening holes 11 can be set as needed and is not specifically limited here.

[0079] Alternatively, see Figure 4 The backrest frame also includes a plurality of second fasteners 5. A plurality of second fastening holes 25 are provided at the second end of the connector 2. The second fastening holes 25 are specifically provided in the main body 20. The connecting plug 3 is provided with a plurality of second connecting holes 31. The second fasteners 5, the second fastening holes 25 and the second connecting holes 31 correspond to each other one by one, and the second fasteners 5 pass through the second connecting holes 31 and are screwed into the corresponding second fastening holes 25 to achieve a detachable connection between the connecting plug 3 and the connector 2. The operation is simple and convenient, and the connecting plug 3 is usually a standardized and modular part, mostly prefabricated in batches. If the backrest frame is worn or damaged, the detachable connection method allows the backrest frame or the connecting plug 3 to be replaced separately, without having to scrap the furniture as a whole, thereby reducing maintenance costs.

[0080] For details, please refer to Figure 4 In this embodiment, multiple nuts are welded to the second end of the connector 2, facing away from the connector plug 3. Second fastening holes 25 are defined in the nuts. Furthermore, corresponding clearance holes are defined on the connector 2, allowing the second fasteners 5 to pass through the clearance holes and be screwed into the nuts. For example, two second fasteners 5, two second connection holes 31, two clearance holes, and two nuts are each provided. The second fasteners 5 are bolts, and the second connection holes 31 and the clearance holes are through holes.

[0081] Alternatively, in other embodiments, the nut may not be provided, and the second fastening hole 25 may be directly provided at the second end of the connecting member 2 .

[0082] For example, please refer to Figure 4 In this embodiment, there are two second fasteners 5, two second connecting holes 31 and two second fastening holes 25, and the second fastener 5 is a bolt, the second connecting hole 31 is a through hole, and the second fastening hole 25 is a threaded hole; in other embodiments, the number of second fasteners 5, second connecting holes 31 and second fastening holes 25 can be set as needed and is not specifically limited here.

[0083] Alternatively, see Figure 2-Figure 4The backrest frame also includes a cushioning member 6, which is sandwiched between the second end of the connector 2 and the connector plug 3. The cushioning member 6 defines a plurality of third connection holes 62. The second fastener 5 passes through the second connection holes 31 and the third connection holes 62 and is screwed into the second fastening hole 25. Correspondingly, two third connection holes 62 are provided. The cushioning member 6 allows the backrest frame to be assembled with base frames of varying sizes, broadening its applicability.

[0084] In addition, in this embodiment, the first fastener 4 and the second fastener 5 have the same length and can be used in common, which increases the efficiency of production, processing and assembly.

[0085] Further, please refer to Figure 4 The cushion member 6 is provided with a plurality of positioning portions 61, and the second end of the connector 2 is provided with a plurality of positioning holes 24. The plurality of positioning portions 61 are inserted into the plurality of positioning holes 24 in a one-to-one correspondence. The above arrangement can achieve the initial positioning of the cushion member 6 when installing the cushion member 6, which is convenient for the subsequent screwing and fixing of the connector 3.

[0086] For example, please refer to Figure 4 In this embodiment, two positioning holes 24 and two positioning portions 61 are provided. In other embodiments, the number of positioning holes 24 and positioning portions 61 can be set as needed and is not specifically limited here.

[0087] Example 2:

[0088] like Figures 5 to 8 As shown, this embodiment provides another backrest frame, which differs from the first embodiment in that:

[0089] Along the width direction of the backrest main body 1, the first end of the connecting member 2 and the second end of the connecting member 2 are staggered. Specifically, the positions of the slots on the base frames of different models are different, and the spacing between adjacent slots is also different. According to the slot spacing on the base frames of different models, the connecting members 2 with different degrees of staggeredness at both ends are replaced in a targeted manner, so that the backrest main body 1 can be adapted to various models of base frames, thereby improving versatility.

[0090] like Figures 5 to 8 As shown, the connector 2 is configured as a square tube structure with a hollow structure, which greatly reduces the weight of the connector 2 itself. In addition, the rectangular cross-section of the square tube can evenly disperse external forces to ensure the stability of the connection part.

[0091] Furthermore, the connector 2 includes two connecting sections 26 and a transition section 27. The ends of the transition section 27 are respectively connected to the two connecting sections 26. One of the two connecting sections 26 serves as the first end of the connector 2 and is detachably connected to the mounting portion 101 of the backrest body 1. The other serves as the second end of the connector 2 and is connected to the connector plug 3. The two connecting sections 26 are arranged in parallel, and the transition section 27 is arranged at an angle to both connecting sections 26. In this embodiment, the transition section is arranged at an obtuse angle to both connecting sections 26. This arrangement allows the two connectors 2 spaced apart on the backrest body 1 to be shared. That is, the connector 2 can be used on either the left or right side of the backrest body 1. Furthermore, the ends of the connector 2 are also universal. During assembly, workers do not need to deliberately distinguish between the connectors 2, which is more convenient and efficient, and prevents incorrect or reverse installation.

[0092] Furthermore, the transition section 27 is bent relative to the first end of the connector 2 away from the other connector 2, and the connecting plug 3 is detachably connected to the inner side of the connector 2 facing the other connector 2, that is, Figure 5-Figure 7 In the plug-in structure shown, the connecting plug 3 is arranged on the inner side of the connecting member 2. Alternatively, the transition section 27 is bent relative to the first end of the connecting member 2 toward the other connecting member 2, and the connecting plug 3 is detachably connected to the outer side of the connecting member 2 facing away from the other connecting member 2, that is, Figure 8 The above arrangement enables the backrest frame to be adapted to base frames of different sizes, and has good applicability.

[0093] Alternatively, see Figure 7 The connecting section 26 is provided with a plurality of fourth connecting holes 28. When the connecting section 26 is connected to the backrest body 1 as the first end of the connecting member 2, the first fastener 4 passes through the fourth connecting hole 28 and is screwed and fixed in the first fastening hole 11 to realize the detachable connection between the connecting member 2 and the backrest body 1. The operation is simple and convenient, and the materials are easy to obtain, and it has good economic efficiency.

[0094] For example, in this embodiment, please refer to Figure 7 , two fourth connecting holes 28 are provided on each connecting section 26, and the first fastener 4 is a bolt, the fourth connecting hole 28 is a through hole, and the first fastening hole 11 is a threaded hole; in other embodiments, the number of the first fastener 4, the fourth connecting hole 28 and the first fastening hole 11 can be set as needed and is not specifically limited here.

[0095] Alternatively, see Figure 4-Figure 8When the connecting section 26 is connected to the connecting plug-in 3 as the second end of the connecting member 2, the second fastener 5 passes through the second connecting hole 31, the third connecting hole 62 and the fourth connecting hole 28, and is fixed to the connecting section 26 to achieve a detachable connection between the connecting plug-in 3 and the connecting member 2. The operation is simple and convenient, and the materials are easy to obtain, which has good economic efficiency.

[0096] For example, in this embodiment, there are two second fasteners 5, two second connecting holes 31 and two third connecting holes 62, and the second fastener 5 is a bolt, and one end of the second fastener 5 passes through the fourth connecting hole 28 and is locked to the connecting member 2 by a nut; in other embodiments, the number of the second fasteners 5, the second connecting holes 31 and the third connecting holes 62 can be set as needed and is not specifically limited here.

[0097] Further, please refer to Figure 7 The connecting section 26 is provided with a plurality of positioning holes 24, and the plurality of positioning portions 61 are inserted into the plurality of positioning holes 24 in a one-to-one correspondence. The above arrangement can realize the preliminary positioning of the padding member 6 when installing the padding member 6, so as to facilitate the subsequent screwing and fixing of the connecting plug 3.

[0098] For example, referring to Figure 9 In the same model of sofa, the height H0 of the integrated backrest frame in the prior art is 653.5 mm, while the height H1 of the backrest frame provided in Example 1 is 515.0 mm, and the height H2 of the backrest frame provided in Example 2 is 480.5 mm.

[0099] During transportation or storage, two backrest frames are packed in one packing box. Figure 10 As shown, the specific dimensions of the integrated backrest frame in the prior art when packed in two boxes are: length X0 = 585.0 mm, width Y0 = 200.0 mm, height H0 = 670.0 mm, and a volume of about 0.078 m 3 The specific dimensions of the backrest frame provided in Example 1 when packed in two boxes are: length X1 = 585.0mm, width Y1 = 175.0mm, height H1 = 525.0mm, and a volume of approximately 0.054m 3 The backrest frame provided in Example 2 has the following specific dimensions when packed in two boxes: length X2 = 585.0 mm, width Y2 = 170.0 mm, height H2 = 500.0 mm, and a volume of approximately 0.05 m 3 .

[0100] If a 40-foot high cabinet (volume 76m 3, utilization rate 90%) for transportation or storage. The prior art integrated sofa backrest bracket can be packed into 76 / 0.078*90%≈877 cartons; the sofa backrest bracket provided in Example 1 can be packed into 76 / 0.054*90%≈1267 cartons; and the sofa backrest bracket provided in Example 2 can be packed into 76 / 0.05*90%≈1368 cartons. It can be seen that the single shipment quantity of the backrest frames provided in Examples 1 and 2 is significantly increased, and transportation costs are significantly reduced.

[0101] Example 3:

[0102] like Figure 11-13 As shown, this embodiment provides a sofa, which includes an outer covering 400 and a sofa frame. The sofa frame includes at least two frame units 100. The frame units 100 include a base frame 300 and a backrest frame 200 provided in Example 1 or Example 2. The outer covering 400 is covered with the backrest frame 200 and the base frame 300. The base frame 300 is provided with at least two slots, which are configured to plug and mate with the connecting plug 3. Furthermore, the base frame 300 is provided with a hook 8 on the side in the width direction. The hook 8 is used to hook to the hook 8 on another base frame 300 to connect two adjacent frame units 100.

[0103] Specifically, two adjacent skeleton units 100 are connected and fixed to each other through the cooperation between the relative hanging parts 8, so as to improve the efficiency of assembly and disassembly and reduce the burden of manpower.

[0104] For example, Figure 13 As shown, the hanging member 8 includes a hanging portion 81, and the hanging portion 81 is spaced apart from the main body of the base frame 300 to form a hanging groove 82. When the two hanging members 8 cooperate with each other, the hanging portion 81 on one hanging member 8 is inserted into the hanging groove 82 of the other hanging member 8, and the two are interlocked to form a stable hanging structure.

[0105] For example, Figure 11-13 As shown, the hanging member 8 is provided on the base frame 300, and the base frame 300 is provided with a bottom connecting rod 7 extending along its width direction. The hanging member 8 is provided at the end of the bottom connecting rod 7. Specifically, at least one end of the bottom connecting rod 7 is provided with a hanging member 8, so that at least one side of the skeleton unit 100 can be connected to another skeleton unit 100. For example, the skeleton unit 100 at the edge position of the sofa can be provided with a hanging member 8 only at one end of its bottom connecting rod 7; the skeleton unit 100 at the middle position of the sofa is provided with hanging members 8 at both ends of its bottom connecting rod 7, so that the left and right sides of the skeleton unit 100 can be respectively connected to another skeleton unit 100.

[0106] For example, Figure 12As shown, the hanging member 8 is integrally formed with the bottom connecting rod 7 , and the hanging member 8 is formed at the end of the bottom connecting rod 7 by bending, flanging and stamping processes.

[0107] For example, Figure 13 As shown, the hanging member 8 and the bottom connecting rod 7 can also be connected in a detachable manner. Specifically, the end of the bottom connecting rod 7 is provided with a mounting plate 71 integrally formed therewith. The hanging member 8 is fastened to the mounting plate 71 by screws, and a hanging groove 82 is formed between the hanging member 8 and the mounting plate 71.

[0108] For example, Figure 11-13 As shown, two bottom connecting rods 7 are spaced apart along the front-to-back direction of the base frame 300. The hooking member 8 on one bottom connecting rod 7 engages horizontally, while the hooking member 8 on the other bottom connecting rod 7 engages vertically. This restricts relative movement of adjacent base frames 300 in both horizontal and vertical directions, improving installation stability. In this embodiment, the hooking member 8 located at the front engages horizontally, while the hooking member 8 located at the rear engages vertically. Specifically, when assembling the sofa, one only needs to push the base frame 300 horizontally to engage the opposing hooking members 8 at the front, then lift the rear end of the sofa to engage the opposing hooking members 8 at the rear. This simple push-and-lift process completes the sofa assembly, requiring only the rear end of the sofa to be lifted. Conventional sofa assembly methods require lifting the entire sofa to align all the hooking members simultaneously. In comparison, the sofa provided by this embodiment significantly reduces assembly difficulty and improves assembly convenience and efficiency.

[0109] Example 4:

[0110] like Figure 14 As shown, this embodiment provides a packaging method for packaging the sofa provided in the third embodiment, and the packaging method includes the following steps:

[0111] Splitting a plurality of adjacent skeleton units 100;

[0112] Remove the outer covering 400;

[0113] Pull out the connecting plug 3 from the slot of the base frame 300 to separate the backrest frame 200 from the base frame 300;

[0114] Remove the connecting piece 2 from the backrest body 1;

[0115] Place and fix the connecting member 2 and at least a portion of the outer covering 400 in the accommodating cavity;

[0116] The backrest frame 200 and the base frame 300 are packed together.

[0117] Specifically, the packaging method provided in this embodiment places the removed connecting part 2 and at least part of the outer covering 400 in the accommodating cavity of the backrest frame 200, and packs the backrest frame 200 and the base frame 300 together, thereby reducing the packaging volume, improving the loading rate, and reducing transportation costs.

[0118] Exemplarily, the adjacent split skeleton units 100 specifically include the following steps:

[0119] Detach the two rear hanging parts 8 in the vertical direction;

[0120] The two hanging parts 8 at the front are separated in the horizontal direction.

[0121] Exemplarily, the outer covering 400 includes a backrest bag, which includes a face cover and a soft bag placed in the face cover, and the face cover has an inner cavity that can be opened and closed by a zipper; removing the outer covering 400 includes the following steps:

[0122] Remove the backrest bag from the backrest frame 200;

[0123] Take the soft bag out of the inner cavity;

[0124] Folding face cover;

[0125] The soft bag can be compressed by vacuuming.

[0126] Furthermore, placing at least a portion of the outer covering 400 in the accommodating cavity of the backrest frame 200 specifically includes the following steps:

[0127] The face cover is placed in the receiving cavity of the backrest frame 200 .

[0128] Furthermore, packaging the backrest frame 200 and the base frame 300 together includes the following steps:

[0129] The compressed soft bag, the backrest frame 200 and the base frame 300 are packed together into a packaging box to further compress the packaging volume.

[0130] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A backrest frame, characterized in that: include: The backrest body (1) is configured as a rectangular frame structure, and the lower end of the backrest body (1) is provided with two mounting portions (101) spaced apart in the width direction; Two connecting members (2), wherein the first ends of the connecting members (2) are detachably connected to the mounting portion (101), and the second ends of the connecting members (2) are provided with connecting plugs (3), and the connecting plugs (3) are configured to be inserted into the base frame; The backrest body (1) is provided with an accommodating cavity capable of accommodating the two connecting members (2).

2. The backrest frame according to claim 1, characterized in that: A notch (12) is provided at the bottom of the mounting portion (101), and the notch (12) is provided on a side of the backrest body (1) facing away from the supporting surface; The connecting member (2) comprises a main body (20) and a first reinforcement portion (21), wherein the main body (20) and the first reinforcement portion (21) extend in the same direction, and the main body (20) and the first reinforcement portion (21) are arranged at an angle, the main body (20) is connected to the backrest body (1), and the first reinforcement portion (21) extends into the notch (12) and presses against the top of the notch (12).

3. The backrest frame according to claim 2, characterized in that: A second reinforcement portion (22) is provided at one end of the connecting member (2) away from the backrest body (1); the main body (20) and the second reinforcement portion (22) are arranged at an angle; the first reinforcement portion (21) and the second reinforcement portion (22) are bent in the same direction; and the first reinforcement portion (21) and the second reinforcement portion (22) are welded and fixed.

4. The backrest frame according to claim 3, characterized in that: The main body (20), the first reinforcement part (21) and the second reinforcement part (22) are integrally formed.

5. The backrest frame according to claim 1, characterized in that: The connecting member (2) is configured as a hollow square tube structure, and along the width direction of the backrest body (1), the first end of the connecting member (2) and the second end of the connecting member (2) are staggered.

6. The backrest frame according to claim 5, characterized in that: The connecting member (2) comprises two connecting sections (26) and a transition section (27), the two ends of the transition section (27) being connected to the two connecting sections (26) respectively, one of the two connecting sections (26) being detachably connected to the backrest body (1) as the first end of the connecting member (2), and the other being connected to the connecting plug-in unit (3) as the second end of the connecting member (2); The two connecting sections (26) are arranged in parallel, and the transition section (27) is arranged at an angle to the two connecting sections (26).

7. The backrest frame according to claim 6, characterized in that: The transition section (27) is bent relative to the first end of the connecting member (2) away from the other connecting member (2), and the connecting plug (3) is detachably connected to the inner side surface of the connecting member (2) facing the other connecting member (2); or, The transition section (27) is bent relative to the first end of the connecting member (2) toward the other connecting member (2), and the connecting plug (3) is detachably connected to the outer side surface of the connecting member (2) facing away from the other connecting member (2).

8. The backrest frame according to any one of claims 1 to 7, characterized in that: The backrest frame (200) further comprises a cushioning member (6), wherein the cushioning member (6) is sandwiched between the second end of the connecting member (2) and the connecting plug-in member (3).

9. A sofa backrest, characterized in that: It comprises an outer covering (400) and a backrest frame (200) according to any one of claims 1 to 8, wherein the outer covering (400) covers the backrest frame (200).

10. A sofa frame, characterized in that: The invention comprises at least two skeleton units (100), wherein the skeleton unit (100) comprises a base skeleton (300) and a backrest skeleton (200) according to any one of claims 1 to 8, wherein the base skeleton (300) is provided with at least two slots, wherein the slots are configured to be plugged into and matched with the connecting plug (3); The base frame (300) is provided with a hanging piece (8) on the side surface in the width direction, and the hanging piece (8) is used to hang the hanging piece (8) on another base frame (300) to connect two adjacent frame units (100).

11. The sofa frame according to claim 10, characterized in that: The base frame (300) is provided with a bottom connecting rod (7) extending along its width direction, the hanging member (8) is provided at the end of the bottom connecting rod (7), and the hanging member (8) and the bottom connecting rod (7) are integrally formed; or The hanging member (8) is detachably connected to the bottom connecting rod (7).

12. The sofa frame according to claim 11, characterized in that: Two bottom connecting rods (7) are arranged at intervals along the front-to-back direction of the base frame (300), wherein the clamping direction of the hanging member (8) on one of the bottom connecting rods (7) is horizontal, and the clamping direction of the hanging member (8) on the other bottom connecting rod (7) is vertical.

13. The sofa frame according to claim 10, characterized in that: The hanging member (8) includes a hanging portion (81), and the hanging portion (81) is spaced apart from the body of the base frame (300) to form a hanging groove (82). When the two hanging members (8) are matched with each other, the hanging portion (81) on one hanging member (8) is inserted into the hanging groove (82) of the other hanging member (8).

14. A sofa, characterized in that: It comprises an outer covering (400) and a sofa frame according to any one of claims 10 to 13, wherein the outer covering (400) covers the backrest frame (200) and the base frame (300).

15. A packaging method, characterized in that: For packaging the sofa according to claim 14, the packaging method comprises the following steps: Splitting a plurality of adjacent skeleton units (100); removing the outer covering (400); Pulling the connecting plug-in (3) out of the slot of the base frame (300) to separate the backrest frame (200) from the base frame (300); Detaching the connecting member (2) from the backrest body (1); Placing and fixing the connecting member (2) and at least a portion of the outer covering (400) in the accommodating cavity; The backrest frame (200) and the base frame (300) are packaged together.

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