Detachable sofa bed

Abstract

The utility model relates to the technical field of furniture, in particular to a detachable sofa bed which comprises a sofa seat, a first armrest detachably connected to one end of the sofa seat, a second armrest detachably connected to the other end of the sofa seat, and a backrest detachably connected to the rear side of the sofa seat, the extension mechanism is movably connected between the first armrest and the second armrest and is positioned below the sofa seat; the extension mechanism comprises an extension frame, a first connecting assembly and a second connecting assembly which are arranged at the two ends of the extension frame, and an extension seat connected with the first connecting assembly and the second connecting assembly. According to the detachable sofa bed, the sofa seat, the second armrest and the extension mechanism are detachably connected, so that the sofa bed can be conveniently detached, the space utilization rate during transportation is improved, meanwhile, the sofa bed which is detached into a plurality of parts is also convenient to enter a home, the sofa bed is prevented from being damaged due to integral carrying, and the transportation cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of wood processing, in particular to a detachable sofa bed. Background Art

[0002] Furniture refers to various appliances and equipment used in indoor spaces (such as homes, offices, and hotels), serving functions such as storage, seating, support, and decoration. Furniture comes in a wide variety of styles, with common examples including sofas, coffee tables, dining tables, and cabinets. A sofa is a cushioned, multi- or single-seat chair, typically equipped with a spring-loaded or sponge-filled backrest and armrests. With technological advancements and improved living standards, people are placing higher demands on furniture. To meet user needs and achieve diverse functionality, sofas are now being designed as sofa beds. These sofa beds feature expandable structures, allowing them to be transformed into beds to meet user needs. However, conventional sofa beds, designed to accommodate reclining, are large, irregular, and bulky. They take up a significant amount of space during transportation, significantly increasing shipping costs. Furthermore, due to their size, sofa beds can be inconvenient to transport, often requiring multiple people to maneuver and easily damaged. This increases handling costs and is time-consuming and labor-intensive. Utility Model Content

[0003] In order to solve the above problems, the utility model provides a detachable sofa bed.

[0004] The utility model is implemented by the following scheme:

[0005] A detachable sofa bed comprises a sofa seat, a first armrest detachably connected to one end of the sofa seat, a second armrest detachably connected to the other end of the sofa seat, a backrest detachably connected to the rear side of the sofa seat, and an expansion mechanism movably connected between the first armrest and the second armrest, wherein the expansion mechanism is located below the sofa seat; the expansion mechanism comprises an expansion frame, a first connecting assembly and a second connecting assembly arranged at both ends of the expansion frame, and an expansion seat connected to the first connecting assembly and the second connecting assembly; the first connecting assembly and the second connecting assembly each comprise a first connecting member rotatably connected to the expansion frame, a second connecting member rotatably connected to the first connecting member, a third connecting member connected to the expansion seat, and a fourth connecting member, wherein the second connecting member is rotatably connected to the third connecting member, and one end of the fourth connecting member is rotatably connected to the first connecting member.

[0006] Furthermore, the second connecting member includes a first connecting arm and a second connecting arm with an obtuse angle, and the end of the fourth connecting member is rotatably connected to the corner of the first connecting arm and the second connecting arm.

[0007] Furthermore, the backrest is connected to the sofa seat through a third connecting component, and the third connecting component includes a fixing part connected to the end of the sofa seat, a rotating arm connected to the fixing part, and a plug-in slot connected to the end of the backrest, and the rotating arm is plugged into the plug-in slot.

[0008] Furthermore, the expansion frame includes a first side frame, a second side frame, and a fixing rod connected between the first side frame and the second side frame, the first connecting member of the first connecting assembly is connected to the first side frame, and the first connecting member of the second connecting assembly is connected to the second side frame.

[0009] Furthermore, a plurality of rollers are provided at the bottom of each of the first side frame and the second side frame.

[0010] Furthermore, a plurality of supporting fixing members for supporting the sofa seat are provided on the side of the first armrest facing the second armrest and on the side of the second armrest facing the first armrest.

[0011] Furthermore, a guide rail matching the expansion frame is provided on the side of the first armrest facing the second armrest and on the side of the second armrest facing the first armrest.

[0012] Furthermore, a support plate for supporting the expansion seat is provided on the front side of the expansion frame.

[0013] Furthermore, a front sealing plate is provided on the front side of the support plate, and a rear sealing plate is connected between the rear sides of the first armrest and the rear sides of the second armrest.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The detachable connections between the sofa seat, first armrest, second armrest, and expansion mechanism of this utility model facilitate disassembly, thereby improving space utilization during transportation. Furthermore, the disassembled sofa bed is easy to move into homes, preventing damage to the sofa bed caused by transporting the entire unit, thereby reducing transportation costs. Furthermore, this utility model is easy to assemble and use, allowing for the flexible and quick transition between sofa and bed configurations. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of a detachable sofa bed provided by the present invention.

[0017] Figure 2 This is a schematic diagram from another perspective of the present invention.

[0018] Figure 3 This is a partial schematic diagram of the expansion frame of the utility model.

[0019] Figure 4 This is a schematic diagram of the expansion process of the utility model.

[0020] Included in the figure are:

[0021] Sofa seat 1, first armrest 2, load-bearing fixing member 21, guide rail 22, second armrest 3, backrest 4, extension mechanism 5, extension frame 51, first side frame 511, second side frame 512, fixing rod 513, roller 514, support plate 515, first connecting component 52, first connecting member 521, second connecting member 522, first connecting arm 522a, second connecting arm 522b, third connecting member 523, fourth connecting member 524, second connecting component 53, extension seat 54, third connecting component 6, fixing member 61, rotating arm 62, plug-in slot 63, front sealing plate 7, rear sealing plate 8. DETAILED DESCRIPTION

[0022] In order to facilitate those skilled in the art to understand the present invention, the present invention will be further described in detail below with reference to specific embodiments and drawings.

[0023] Reference Figures 1 to 4 The present invention provides a detachable sofa bed, comprising a sofa seat 1, a first armrest 2 detachably connected to one end of the sofa seat 1, a second armrest 3 detachably connected to the other end of the sofa seat 1, a backrest 4 detachably connected to the rear side of the sofa seat 1, and an expansion mechanism 5 movably connected between the first armrest 2 and the second armrest 3, the expansion mechanism 5 being located below the sofa seat 1. In this embodiment, the connections between the sofa seat 1, the first armrest, the second armrest 3, the backrest 4 and other components are all detachable, so that the sofa bed can be disassembled during transportation for easy stacking, improving space utilization and facilitating indoor transport.

[0024] The expansion mechanism 5 includes an expansion frame 51, a first connecting assembly 52 and a second connecting assembly 53 disposed at both ends of the expansion frame 51, and an expansion seat 54 connected to the first connecting assembly 52 and the second connecting assembly 53. The first connecting assembly 52 and the second connecting assembly 53 each include a first connecting member 521 rotatably connected to the expansion frame 51, a second connecting member 522 rotatably connected to the first connecting member 521, a third connecting member 523 connected to the expansion seat 54, and a fourth connecting member 524, wherein the second connecting member 522 is rotatably connected to the third connecting member 523, and one end of the fourth connecting member 524 is rotatably connected to the first connecting member 521. Under the action of the first connecting assembly 52 and the second connecting assembly 53, the expansion seat 54 can be lifted to a certain height and then maintained at that height, so that the expansion seat 54 and the sofa seat 1 are on the same plane, thereby forming a bed.

[0025] The second connecting member 522 includes a first connecting arm 522a and a second connecting arm 522b at an obtuse angle, and the end of the fourth connecting member 524 is rotatably connected to the angle between the first connecting arm 522a and the second connecting arm 522b. When the expansion seat 54 is pulled, the first connecting member 521 rotates relative to the expansion frame 51, the second connecting member 522 rotates relative to the first connecting member 521, and the third connecting member 523 rotates relative to the second connecting member 522 until the second connecting arm 522b is nearly parallel to the vertical direction. At this point, the top of the expansion seat 54 is in the same plane as the sofa seat 1, and the second connecting member 522 and the third connecting member 523 form a Y-shaped support structure, which allows the expansion seat 54 to remain stable in this position.

[0026] The expansion frame 51 includes a first side frame 511, a second side frame 512, and a fixing rod 513 connected between the first side frame 511 and the second side frame 512. The first connecting member 521 of the first connecting assembly 52 is connected to the first side frame 511, and the first connecting member 521 of the second connecting assembly 53 is connected to the second side frame 512. Specifically, in this embodiment, the first connecting member 521 of the first connecting assembly 52 is connected to the side of the first side frame 511 facing the second side frame 512, and the first connecting member 521 of the second connecting assembly 53 is connected to the side of the second side frame 512 facing the first side frame 511. The expansion frame 51 can also be configured as a detachable structure, allowing the sofa bed to be further disassembled and improving space utilization during transportation.

[0027] The bottoms of both the first side frame 511 and the second side frame 512 are equipped with a plurality of rollers 514. The rollers 514, in contact with the ground, not only support the entire expansion mechanism 5 but also reduce the user's effort when extending or retracting the expansion mechanism 5. In this embodiment, two rollers 514 are provided on the first side frame 511 and two rollers 514 are provided on the second side frame 512, forming four support points to ensure the stability of the expansion mechanism 5.

[0028] The backrest 4 is connected to the sofa seat 1 via a third connecting assembly 6. This third connecting assembly 6 includes a fixing member 61 connected to the end of the sofa seat 1, a pivoting arm 62 connected to the fixing member 61, and a slot 63 connected to the end of the backrest 4. The pivoting arm 62 is inserted into the slot 63. The cooperation between the pivoting arm 62 and the slot 63 makes the installation and removal of the backrest 4 more convenient and quick. When needed, the backrest 4 can be quickly removed and stacked on the sofa seat 1 to reduce space usage. Two third connecting assemblies 6 are provided, one at each end of the sofa seat 1. The fixing member 61 is fixed to the end of the sofa seat 1 via fasteners. The pivoting arm 62 can rotate relative to the fixing member 61, facilitating the adjustment of the backrest 4 to a horizontal position, thereby forming a bed with the sofa seat 1 and the extension seat 54. Furthermore, the fixing member 61 and the pivoting arm 62 may also be provided with a cooperating snap-fit ​​structure to facilitate the adjustment of the backrest 4 to a desired angle.

[0029] A plurality of supporting fixtures 6121 for supporting the sofa seat 1 are provided on the side of the first armrest 2 facing the second armrest 3 and on the side of the second armrest 3 facing the first armrest 2. In this embodiment, the supporting fixtures 6121 have an L-shaped cross-section and are connected to the first armrest 2 or the second armrest 3 via fasteners. Fasteners can also be used to connect the sofa seat 1 and the supporting fixtures 6121.

[0030] The first armrest 2 is provided with a guide rail 22 that matches the expansion frame 51 on one side of the first armrest 2 facing the second armrest 3 and on the other side of the second armrest 3 facing the first armrest 2. The guide rail 22 can play a guiding role, making the expansion mechanism 5 more stable and accurate when moving.

[0031] The expansion frame 51 is provided with a support plate 515 on the front side for supporting the expansion base 54. When the expansion mechanism 5 is deployed, the support plate 515 supports the front side of the expansion base 54, while the support structure formed by the first connecting component 52 and the second connecting component 53 after deployment supports the rear side of the expansion base 54, ensuring the stability of the expansion base 54 after deployment.

[0032] The front side of the support plate 515 is provided with a front sealing plate 7, and the rear side of the first armrest 2 and the rear side of the second armrest 3 are connected with a rear sealing plate 8. The front sealing plate 7 and the rear sealing plate 8 not only play a beautifying role, but also prevent foreign matter from entering the interior.

[0033] During actual use, when the user wants to transform the sofa bed into a bed form, first pull the expansion frame 51 to make the expansion mechanism 5 leave the bottom of the sofa seat 1, then lift the front side of the expansion seat 54 upwards, and after lifting it to a certain height, pull the expansion seat 54 forward again. After pulling the expansion seat 54 to the set position, press the front side of the expansion seat 54 downward so that the expansion seat 54 finally forms a plane with the sofa seat 1, and finally rotate the backrest 4 toward the ground until the backrest 4 and the sofa seat 1 are in the same plane, that is, adjust the sofa bed to a bed form.

[0034] In the description of the present invention, it should be understood that the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0035] Furthermore, the terms "first," "second," and so on are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referenced. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0036] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0037] Although the present invention has been described with reference to the above specific embodiments, it is apparent that those skilled in the art can make many substitutions, modifications, and variations based on the above. Therefore, all such substitutions, modifications, and variations are intended to fall within the scope of the appended claims.

Claims

1. A detachable sofa bed, characterized in that: It includes a sofa seat, a first armrest detachably connected to one end of the sofa seat, a second armrest detachably connected to the other end of the sofa seat, a backrest detachably connected to the rear side of the sofa seat, and an expansion mechanism movably connected between the first armrest and the second armrest, wherein the expansion mechanism is located below the sofa seat; the expansion mechanism includes an expansion frame, a first connecting component and a second connecting component arranged at both ends of the expansion frame, and an expansion seat connected to the first connecting component and the second connecting component; the first connecting component and the second connecting component both include a first connecting member rotatably connected to the expansion frame, a second connecting member rotatably connected to the first connecting member, a third connecting member connected to the expansion seat, and a fourth connecting member, wherein the second connecting member is rotatably connected to the third connecting member, and one end of the fourth connecting member is rotatably connected to the first connecting member.

2. The detachable sofa bed according to claim 1, characterized in that: The second connecting member includes a first connecting arm and a second connecting arm with an obtuse angle, and the end of the fourth connecting member is rotatably connected to the corner of the first connecting arm and the second connecting arm.

3. The detachable sofa bed according to claim 1, characterized in that: The backrest is connected to the sofa seat through a third connecting component, and the third connecting component includes a fixing member connected to the end of the sofa seat, a rotating arm connected to the fixing member, and a plug-in slot connected to the end of the backrest, and the rotating arm is plugged into the plug-in slot.

4. The detachable sofa bed according to claim 1, characterized in that: The expansion frame includes a first side frame, a second side frame, and a fixing rod connected between the first side frame and the second side frame. The first connecting member of the first connecting assembly is connected to the first side frame, and the first connecting member of the second connecting assembly is connected to the second side frame.

5. The detachable sofa bed according to claim 4, characterized in that: A plurality of rollers are provided at the bottom of each of the first side frame and the second side frame.

6. The detachable sofa bed according to claim 1, characterized in that: A plurality of bearing fixing members for bearing the sofa seat are provided on the side of the first armrest facing the second armrest and on the side of the second armrest facing the first armrest.

7. The detachable sofa bed according to claim 1, characterized in that: A guide rail matching the expansion frame is provided on the side of the first armrest facing the second armrest and on the side of the second armrest facing the first armrest.

8. The detachable sofa bed according to claim 1, characterized in that: A support plate for supporting the expansion seat is provided on the front side of the expansion frame.

9. The detachable sofa bed according to claim 8, characterized in that: A front sealing plate is provided on the front side of the support plate, and a rear sealing plate is connected between the rear sides of the first armrest and the rear sides of the second armrest.

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