A sofa backrest framework, a sofa backrest and a sofa

Abstract

The utility model belongs to furniture technical field discloses a sofa backrest framework, sofa backrest and sofa, this sofa backrest framework includes framework main body and two connecting pieces, framework main body is the frame structure of rectangular shape, two connecting pieces are along the width direction interval arrangement of framework main body in framework main body. The first end of connecting piece is detachably connected in framework main body, the second end of connecting piece is provided with connecting plug-in, and connecting plug-in is configured as inserting in sofa main body, to install sofa backrest in sofa main body, connecting piece includes main part and first reinforcing part, and main part and first reinforcing part extend in the same direction, and main part and first reinforcing part are arranged at the included angle. When transporting sofa backrest framework, the connecting piece connected on the framework main body is disassembled and put into the hollow of the framework main body, so that the volume is reduced, the occupied space is reduced, thereby the single transportation quantity is improved, and the transportation cost of single sofa is reduced.

Description

Technical Field

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

[0002] As a core piece of furniture in modern homes, a sofa consists of a seat frame, backrest frame, armrest frame, filling material, and outer covering. When transporting sofas, they are usually disassembled and packed separately to reduce the difficulty of handling and minimize space usage.

[0003] In existing technologies, most sofa backrest frames adopt a one-piece or fixed connection structure, forming a fixed and incompressible volume after the backrest frame is manufactured. This rigid structure results in a large overall size and fixed shape of the backrest frame, requiring a large amount of transportation space, thus reducing the number of sofas that can be transported at one time and increasing the transportation cost per sofa. Furthermore, sofas also require a large amount of storage space, leading to high inventory costs and significant challenges in space management. Utility Model Content

[0004] The purpose of this utility model is to provide a sofa back frame, a sofa back, and a sofa, which can reduce the storage space occupied during transportation, increase the quantity transported in a single trip, reduce the transportation cost of a single sofa, and also reduce the inventory cost during storage.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] Firstly, a sofa backrest frame is provided, comprising:

[0007] The main skeleton is a rectangular frame structure;

[0008] Two connectors are spaced apart on the frame body along the width direction of the frame body; the first end of the connector is detachably connected to the frame body, and the second end of the connector is provided with a connecting plug, which is configured to be inserted into the sofa body. The connector includes a main body and a first reinforcing part, the main body and the first reinforcing part extend in the same direction, and the main body and the first reinforcing part are arranged at an angle.

[0009] As an optional solution for the sofa backrest frame, the bottom of the frame body is provided with a notch, which is located on the side of the frame body away from the support surface;

[0010] The main body is connected to the skeleton body, and the first reinforcing part extends into the notch and presses against the top of the notch.

[0011] As an optional solution for the sofa backrest frame, the main body and the first reinforcing part are integrally formed.

[0012] As an optional solution for the sofa backrest frame, the connector has a second reinforcing part at the end away from the frame body. The main body and the second reinforcing part are arranged at an angle. The first reinforcing part and the second reinforcing part are bent in the same direction and welded to each other.

[0013] As an optional solution for the sofa backrest frame, the main body and the second reinforcing part are integrally formed.

[0014] As an optional solution for the sofa backrest frame, it also includes multiple first fasteners; the first end of the connector has multiple first connecting holes, and the frame body has multiple first fastening holes. The first fastener, the first connecting hole and the first fastening hole correspond one-to-one, and the first fastener passes through the first connecting hole and is screwed and fixed in the first fastening hole.

[0015] As an optional solution for the sofa backrest frame, a pad is also included, which is sandwiched between the second end of the connector and the connector plug.

[0016] As an optional solution for the sofa backrest frame, the pad block is provided with multiple positioning parts, and the second end of the connector is provided with multiple positioning holes, with the multiple positioning parts inserted into the multiple positioning holes one by one.

[0017] Secondly, a sofa backrest is provided, including an outer covering and the aforementioned sofa backrest frame, wherein the outer covering covers the sofa backrest frame.

[0018] Thirdly, a sofa is provided, including a sofa body and the aforementioned sofa backrest.

[0019] The beneficial effects of this utility model are:

[0020] This utility model provides a sofa backrest frame, a sofa backrest, and a sofa. Two connectors of the sofa backrest frame are detachable from the frame body. Each connector includes a main body and a first reinforcing part to ensure structural strength. During transportation or storage, the connectors attached to the frame body can be removed and placed into the hollow space of the frame body to reduce volume and space occupation, thereby increasing the quantity transported per shipment and reducing the transportation cost of a single sofa. Attached Figure Description

[0021] Figure 1 It is the existing sofa backrest frame;

[0022] Figure 2 This is a schematic diagram of the structure of the sofa back frame provided in a specific embodiment of the present utility model;

[0023] Figure 3 This is an exploded view of the sofa back frame provided in a specific embodiment of this utility model;

[0024] Figure 4 yes Figure 3 A magnified view of a section at point A in the middle;

[0025] Figure 5 This is a comparative diagram of the dimensions of the sofa back frame provided in this embodiment with those of the prior art;

[0026] Figure 6 This is a schematic diagram showing the dimensions of the sofa backrest frame provided in this embodiment when it is packaged and transported, based on existing technology.

[0027] In the picture:

[0028] 1. Main frame; 11. First fastening hole; 12. Notch; 13. Lower crossbeam;

[0029] 2. Connector; 20. Main body; 21. First reinforcing part; 22. Second reinforcing part; 23. First connecting hole; 24. Positioning hole; 25. Second fastening hole;

[0030] 3. Connecting plug; 31. Second connecting hole;

[0031] 4. First fastener; 5. Second fastener;

[0032] 6. Pad; 61. Positioning part; 62. Third connecting hole. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0034] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0037] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0038] Reference Figure 1 This is a commonly used sofa backrest frame in existing technology. The sofa backrest frame is an integrated fixed connection structure with a fixed volume. It cannot be disassembled during transportation and occupies a large space.

[0039] like Figures 2 to 4 As shown, this embodiment provides a sofa backrest frame, including a frame body 1 and two connectors 2. The frame body 1 is a rectangular frame structure, and the two connectors 2 are spaced apart along the width direction of the frame body 1. The first end of the connector 2 is detachably connected to the frame body 1, and the second end of the connector 2 is provided with a connecting plug 3. The connecting plug 3 is configured to be inserted into the sofa body to install the sofa backrest onto the sofa body. When transporting the sofa backrest frame, the connectors 2 connected to the frame body 1 are detached and placed in the hollow part of the frame body 1 to achieve the effect of reducing volume and space occupation, thereby increasing the quantity transported at one time and reducing the transportation cost of a single sofa.

[0040] Specifically, the main body of the sofa includes a seat cushion frame and an outer covering fitted onto the seat cushion frame. The seat cushion frame is provided with a plug-in structure that cooperates with the connecting plug 3. The connecting plug 3 is an existing conventional structure, and its specific structure and principle refer to existing technology, which will not be elaborated here.

[0041] Optionally, refer to Figures 2-4The bottom of the frame body 1 is provided with a notch 12, which is located on the side of the frame body 1 away from the bearing surface; the connector 2 includes a main body 20 and a first reinforcing part 21. The main body 20 and the first reinforcing part 21 extend in the same direction and are set at an angle to each other. The main body 20 is connected to the frame body 1. The first reinforcing part 21 is provided on the side of the frame body 1 away from the bearing surface. The first reinforcing part 21 extends into the notch 12 and presses against the top of the notch 12.

[0042] Specifically, refer to Figures 2-4 The main frame 1 also includes a bottom crossbeam 13, which is installed at a lower position on the main frame 1. The bottom crossbeam 13 is located on one side of the support surface of the main frame 1. The notch 12 allows the bottom crossbeam 13 to be installed as close as possible to the bottom of the main frame 1, without protruding horizontally, ensuring support comfort and controlling overall volume. Generally, the notch structure affects the overall strength of the sofa back frame. The upper end of the first reinforcing part 21 is inserted into the notch 12, compensating for structural strength. The upper end of the first reinforcing part 21 supports the top of the notch 12, converting some of the backward pressure into downward pressure when the backrest is under pressure, improving load-bearing stability. On the other hand, when assembling the connector 2 with the main frame 1, the notch 12 enables the initial positioning and connection limitation of the connector 2, facilitating subsequent assembly and fixing, reducing assembly difficulty, and improving assembly efficiency.

[0043] Optionally, the main body 20 and the first reinforcing part 21 are integrally formed. The first reinforcing part 21 is formed by bending, which has higher strength compared to plate or sheet structure.

[0044] In this embodiment, the first reinforcing part 21 is perpendicular to the main body part 20.

[0045] Optionally, refer to Figure 4 The connector 2 has a second reinforcing part 22 at the end away from the main frame 1. The main frame 20 and the second reinforcing part 22 are arranged at an angle. The first reinforcing part 21 and the second reinforcing part 22 are bent in the same direction and welded together. Furthermore, the main frame 20 and the second reinforcing part 22 are integrally formed, and the second reinforcing part 22 is formed by bending. That is to say, the connector 2 has flanges on two adjacent sides, and the two flanges are welded together to improve the overall strength of the connector 2 and ensure a stable connection between the sofa back frame and the sofa body.

[0046] In this embodiment, the connector 2 is made of sheet metal, and the first reinforcing part 21 and the second reinforcing part 22 are formed by bending and flanging.

[0047] Further, please refer to Figure 4The sofa backrest frame also includes multiple first fasteners 4. The first end of the connector 2 is provided with multiple first connecting holes 23, which are specifically provided in the main body 20. The frame body 1 is provided with multiple first fastening holes 11. The first fasteners 4, the first connecting holes 23 and the first fastening holes 11 correspond one-to-one. The first fasteners 4 pass through the first connecting holes 23 and are screwed into the corresponding first fastening holes 11 to realize the detachable connection between the connector 2 and the frame body 1. The operation is simple and convenient.

[0048] For example, please refer to Figure 4 In this embodiment, three of each of the first fastener 4, the first connecting hole 23, and the first fastening hole 11 are provided. The first fastener 4 is a bolt, the first connecting hole 23 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 first connecting hole 23, and the first fastening hole 11 can be set as needed, and no specific limitation is made here.

[0049] Alternatively, please refer to Figure 4 The sofa backrest frame also includes multiple second fasteners 5. The second end of the connector 2 has multiple second fastening holes 25, specifically located in the main body 20. The connector 3 has multiple second connecting holes 31. The second fasteners 5, second fastening holes 25, and second connecting holes 31 correspond one-to-one, with the second fasteners 5 passing through the second connecting holes 31 and screwed into the corresponding second fastening holes 25. This allows for a detachable connection between the connector 3 and the connector 2, making operation simple and convenient. Furthermore, the connector 3 is typically a standardized, modular part, mostly prefabricated in batches. If the backrest frame is worn or damaged, the detachable connection method allows for individual replacement of the backrest frame or connector 3, eliminating the need to scrap the entire furniture and reducing repair costs.

[0050] Specifically, please refer to Figure 4 In this embodiment, multiple nuts are welded to the second end of the connector 2 on the side opposite to the connector plug 3. Each nut has a second fastening hole 25. Simultaneously, a clearance hole is provided on the connector 2 at the position corresponding to the nut, allowing the second fastener 5 to pass through the clearance hole and be screwed into the nut. Exemplarily, two of each of the second fastener 5, second connecting hole 31, clearance hole, and nut are provided, and the second fastener 5 is a bolt, while the second connecting hole 31 and clearance hole are both through holes.

[0051] Alternatively, in other embodiments, the nut may be omitted, and the second fastening hole 25 may be directly provided at the second end of the connector 2.

[0052] For example, please refer to Figure 4In this embodiment, there are two of each of the second fastener 5, the second connecting hole 31, and the second fastening hole 25. 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 the second fastener 5, the second connecting hole 31, and the second fastening hole 25 can be set as needed, and no specific limitation is made here.

[0053] Alternatively, please refer to Figures 2-4 The sofa backrest frame also includes a pad 6, which is sandwiched between the second end of the connector 2 and the connector plug 3. The pad 6 has multiple third connecting holes 62. The second fastener 5 passes through the second connecting hole 31 and the third connecting hole 62, and is screwed into the second fastening hole 25. Correspondingly, two third connecting holes 62 are also provided. By using the pad 6, the sofa backrest frame can be assembled with sofa bodies of different sizes and models, thus broadening its applicability.

[0054] In addition, in this embodiment, the first fastener 4 and the second fastener 5 have the same length and can be shared, which makes the production and processing more efficient.

[0055] Further, please refer to Figure 4 The pad 6 is provided with multiple positioning parts 61, and the second end of the connector 2 is provided with multiple positioning holes 24. The multiple positioning parts 61 are inserted into the multiple positioning holes 24 in a corresponding manner. The above configuration can achieve the initial positioning of the pad 6 when installing it, which facilitates the subsequent screwing and fixing of the connector 3.

[0056] For example, please refer to Figure 4 In this embodiment, two positioning holes 24 and two positioning parts 61 are provided; in other embodiments, the number of positioning holes 24 and two positioning parts 61 can be set as needed, and no specific limitation is made here.

[0057] In addition, this embodiment also provides a sofa backrest, including an outer covering and the aforementioned sofa backrest frame, with the outer covering covering the sofa backrest frame. This sofa backrest possesses all the beneficial effects of the aforementioned sofa backrest frame, which will not be elaborated here.

[0058] Specifically, during transportation, the outer covering is folded and placed into the hollow space of the main frame 1 to save space. For example, the outer covering is made of existing flexible materials, and its specific materials and composition are described in accordance with existing technology and will not be repeated here.

[0059] In addition, this embodiment also provides a sofa, including a sofa body and the aforementioned sofa backrest, which has all the beneficial effects of the aforementioned sofa backrest, and will not be described in detail here.

[0060] For example, refer to Figure 5In the same model of sofa, the height H0 of the one-piece sofa back frame in the prior art is 653.5mm, while the height H1 of the sofa back frame provided in this embodiment is 515.0mm.

[0061] During actual transportation or warehousing, the two sofa backrest frames are packed together in one packing box. For example... Figure 6 As shown, the specific dimensions of the existing one-piece sofa backrest frame when packaged in two boxes are: length X0 = 585.0 mm, width Y0 = 200.0 mm, height H0 = 670.0 mm, and volume approximately 0.078 m³. 3 The sofa backrest frame provided in this embodiment has the following dimensions when packaged in two boxes: length X1 = 585.0 mm, width Y1 = 175.0 mm, height H1 = 525.0 mm, and a volume of approximately 0.054 m³. 3 This significantly reduces the amount of storage space required.

[0062] If a 40-foot high cube cabinet (76m³) is used 3 The existing integrated sofa backrest frame can hold approximately 877 boxes (76 / 0.078*90%), while the sofa backrest frame provided in this embodiment can hold approximately 1267 boxes (76 / 0.054*90%). It can be seen that the sofa backrest frame provided in this embodiment significantly increases the quantity of sofas that can be transported in a single trip, while significantly reducing transportation costs.

[0063] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A sofa backrest frame, characterized in that, include: The main skeleton (1) is a rectangular frame structure; Two connectors (2) are spaced apart on the frame body (1) along the width direction of the frame body (1); the first end of the connector (2) is detachably connected to the frame body (1), and the second end of the connector (2) is provided with a connector plug (3), which is configured to be inserted into the sofa body; The connector (2) includes a main body (20) and a first reinforcing part (21). The main body (20) and the first reinforcing part (21) extend in the same direction and are arranged at an angle to each other.

2. The sofa backrest frame according to claim 1, characterized in that, The bottom of the main skeleton (1) is provided with a notch (12), and the notch (12) is located on the side of the main skeleton (1) away from the bearing surface; The main body (20) is connected to the skeleton body (1), and the first reinforcing part (21) extends into the notch (12) and presses against the top of the notch (12).

3. The sofa backrest frame according to claim 1, characterized in that, The main body (20) and the first reinforcing part (21) are integrally formed.

4. The sofa backrest frame according to claim 1, characterized in that, The connector (2) has a second reinforcing part (22) at one end away from the main body (1). The main body (20) and the second reinforcing part (22) are arranged at an angle. The first reinforcing part (21) and the second reinforcing part (22) are bent in the same direction and are welded to each other.

5. The sofa backrest frame according to claim 4, characterized in that, The main body (20) and the second reinforcing part (22) are integrally formed.

6. The sofa backrest frame according to any one of claims 1-5, characterized in that, It also includes multiple first fasteners (4); the first end of the connector (2) is provided with multiple first connecting holes (23), and the skeleton body (1) is provided with multiple first fastening holes (11). The first fasteners (4), the first connecting holes (23) and the first fastening holes (11) correspond one to one, and the first fasteners (4) pass through the first connecting holes (23) and are screwed and fixed in the first fastening holes (11).

7. The sofa backrest frame according to any one of claims 1-5, characterized in that, It also includes a pad (6), which is sandwiched between the second end of the connector (2) and the connector plug (3).

8. The sofa backrest frame according to claim 7, characterized in that, The pad (6) is provided with multiple positioning parts (61), and the second end of the connector (2) is provided with multiple positioning holes (24). The multiple positioning parts (61) are inserted into the multiple positioning holes (24) in a corresponding manner.

9. A sofa backrest, characterized in that, It includes an outer covering and a sofa back frame as described in any one of claims 1-8, wherein the outer covering covers the sofa back frame.

10. A sofa, characterized in that, Includes the sofa body and the sofa back as described in claim 9.

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