Fixing structure of sofa mattress layer and sofa bed
By setting connectors and slots between the sofa mattress layer and the bed frame, combined with folding hinges and locking mechanisms, the problems of unsmooth mode switching and unreasonable support structure of sofa beds are solved, achieving stability and multi-angle adjustment.
Patent Information
- Application Number
- CN202520103335.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-16
- Publication Date
- 2026-02-24
- Estimated Expiration
- 2035-01-16
AI Technical Summary
The existing sofa bed does not switch smoothly between the two states, the cushions and elastic layers are prone to relative movement, the base support structure is unreasonable, it cannot achieve the disassembly and folding of each component, and the spring module is not installed properly.
The sofa bed uses a first connector between the padding and the bed frame, which is engaged with the bed frame through a C-shaped slot. Combined with folding hinges and a locking mechanism, the sofa bed's fixed structure is achieved, increasing the stability of the frame. The bed board is fixed by the middle legs and pins.
It enables stable switching and fixation of the sofa bed, avoids relative movement between the cushion and the bed frame, and enhances the stability of the frame and its multi-angle adjustment capability.
Smart Images
Figure CN223929817U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a type of furniture, and more particularly to a sofa bed. Background Technology
[0002] As people's material living standards gradually improve, residents' demands for furniture and household goods are also becoming more diversified. Among them, sofa beds have become a popular furniture product. However, existing sofa beds have some shortcomings, such as: the switching between the two modes is not smooth enough, and it is often difficult for operators with less strength to do it alone; existing sofa beds may not be stable enough when used as a sofa, and the angle between the seat and backrest may change, affecting comfort; and existing folding beds have relatively simple folding methods, which cannot meet the diverse needs of users.
[0003] Even if the aforementioned problems could be solved, current sofa beds still have many shortcomings in details. For example, the cushions and elastic layers are prone to relative movement during use; the base support structure of the sofa bed cannot support both the main frame of the sofa and the main frame of the bed; the installation method between the bed board frame and the bed board of the main frame is unreasonable; it is not possible to disassemble and fold the various parts of the sofa bed; and if spring modules are present, the installation method of the spring modules is usually not reasonable. Utility Model Content
[0004] The main technical problem to be solved by this utility model is to provide a fixing structure for the mattress layer of a sofa, which can fix the mattress layer and the bed frame together and prevent relative movement between the mattress layer and the bed frame.
[0005] To solve the above-mentioned technical problems, this utility model provides a fixing structure for a sofa mattress layer. The sofa bed includes a left armrest, a right armrest, and a bed frame fixed between the left and right armrests. An elastic layer and a mattress layer are sequentially arranged on the bed frame. The mattress layer has a wrapping portion that wraps around the side of the elastic layer. A plurality of first connectors are arranged at intervals along the circumference on the lower surface of the wrapping portion. The first connectors form a detachable fixed connection with the bed frame.
[0006] In a preferred embodiment: the first connector is a C-shaped slot for engaging with the tubular components of the bed frame.
[0007] This embodiment also provides a sofa bed, including: a structural frame, a padding layer, and an elastic layer; the padding layer and the elastic layer adopt the fixing structure described above.
[0008] In a preferred embodiment: the structural frame includes a left armrest, a right armrest, a bed frame, and a bed board; the bed frame includes a first bed frame and a second bed frame arranged sequentially along the width direction of the armrest; the first bed frame is fixedly connected between the left armrest and the right armrest; the second bed frame is rotatably connected between the left armrest and the right armrest.
[0009] The bed boards are respectively connected to the first bed frame and the second bed frame, and the elastic layer and the padding layer are set on the bed boards.
[0010] In a preferred embodiment: the second bed frame has a first position and a second position relative to the first bed frame; when the second bed frame is in the first position, the included angle between the first bed frame and the second bed frame is 180°; when the second bed frame is in the second position, the included angle between the first bed frame and the second bed frame is less than 180°.
[0011] In a preferred embodiment: the left armrest and the right armrest are respectively rotatably connected to the second bed frame via a folding hinge;
[0012] The folding hinge includes a first arm and a second arm hinged at one end; the other end of the first arm is fixedly connected to the left armrest or the right armrest, and the other end of the second arm is fixedly connected to the second bed frame.
[0013] In a preferred embodiment, the left handrail and the right handrail are fixedly connected by a crossbar.
[0014] In a preferred embodiment: the bed board is divided into a first bed board connected to a first bed frame and a second bed board connected to a second bed frame.
[0015] In a preferred embodiment: the first bed board and the second bed board each include two sub-bed boards, and the two sub-bed boards are connected by hinges so that the first bed board has two states: unfolded and folded.
[0016] In a preferred embodiment: it further includes a middle leg for supporting the first bed board, and the two sub-bed boards are respectively provided with connecting lugs on opposite sides; when the bed board is in the unfolded state, the connecting lugs of the two sub-bed boards are staggered in the height direction so that the connecting holes on the two connecting lugs are aligned; the middle leg has a pin passing through the connecting hole to fix the bed board in the unfolded position.
[0017] Compared with the prior art, the beneficial effect of this utility model is that by setting a first connector and a second connector in the padding layer, and the first connector is connected to the bed frame, the padding layer and the bed frame can be fixed together, avoiding relative movement between the padding layer and the bed frame. Attached Figure Description
[0018] Figure 1This is a schematic diagram of the padding layer installed in front of the bed frame in a preferred embodiment of the present invention;
[0019] Figure 2 This is a schematic diagram of the padding layer installed behind the bed frame in a preferred embodiment of the present invention;
[0020] Figure 3 and Figure 4 This is a schematic diagram illustrating the angle adjustment of the sofa bed according to a preferred embodiment of the present invention;
[0021] Figures 5-13 This is a schematic diagram of the assembly of the sofa bed in a preferred embodiment of the present invention. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0023] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed", "equipped with", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0025] Example 1
[0026] refer to Figures 1-13 This embodiment provides a foldable sofa bed. The backrest of the sofa bed can be laid flat so that the backrest and the seat cushion can be joined together to form a flat bed. The backrest can also form an angle of less than 180° with the seat cushion to achieve the function of a regular sofa.
[0027] Therefore, the aforementioned sofa bed includes a structural frame, a padding layer 1, and an elastic layer 2; the structural frame is used to support the elastic layer 2 and the padding layer 1.
[0028] Specifically, the structural frame includes a left armrest 3, a right armrest 4, a bed frame, and a bed board; the bed frame is arranged in sequence along the width direction of the armrests, with a first bed frame 5 and a second bed frame 6; the first bed frame 5 is fixedly connected between the left armrest 3 and the right armrest 4; the second bed frame 6 is rotatably connected between the left armrest 3 and the right armrest 4; and the bed board is connected to the first bed frame 5 and the second bed frame 6 respectively.
[0029] After the above setup, the first bed frame 5, along with the left armrest 3 and right armrest 4, is fixed in place, serving as the supporting frame for the seat cushion. The second bed frame 6 can rotate relative to the left armrest 3 and right armrest 4, thereby changing the angle between it and the first bed frame 5, serving as the supporting frame for the backrest.
[0030] By limiting the rotational travel of the second bed frame 6, the second bed frame 6 can have a first position and a second position relative to the first bed frame 5. When the second bed frame 6 is in the first position, the included angle between the first bed frame 5 and the second bed frame 6 is 180°; when the second bed frame 6 is in the second position, the included angle between the first bed frame 5 and the second bed frame 6 is less than 180°.
[0031] In this embodiment, a rotatable connection is achieved between the second bed frame 6 and the left armrest 3 and the right armrest 4. The left armrest 3 and the right armrest are rotatably connected to the second bed frame 6 via a folding hinge 7. The folding hinge 7 includes a first arm 71 and a second arm 72 hinged at one end. The other end of the first arm 71 is fixedly connected to the left armrest 3 or the right armrest 4, and the other end of the second arm 72 is fixedly connected to the second bed frame 6.
[0032] In this embodiment, the second bed frame 6 needs to be fixed in the second position to achieve normal sofa function. Therefore, a locking mechanism is also included to fix the relative positions of the first bed frame 5 and the second bed frame 6. Specifically, the locking mechanism includes a ratchet 73 disposed in one of the first support arm 71 and the second support arm 72, and a pawl 74 disposed in the other of the first support arm 71 and the second support arm 72. The ratchet 73 has circumferentially arranged ratchet teeth, and the pawl 74 engages with the ratchet teeth to fix the second bed frame 6 in the current position.
[0033] To achieve multi-position adjustment of the backrest angle, the number of ratchet teeth can be increased. When the pawl 74 engages with different ratchet teeth, the position of the second bed frame 6 can be changed, thereby achieving multi-position adjustment of the backrest angle.
[0034] To increase the stability of the entire frame structure, the left armrest 3 and the right armrest 4 are fixedly connected by a crossbar 8. The crossbar 8 is located on the side of the left armrest 3 and the right armrest 4 near the backrest. Furthermore, a support leg 81 extends downward along the height direction from the middle of the crossbar 8, and the support leg 81 abuts against the ground to provide a new support point.
[0035] In this embodiment, the bed board 9 is divided into a first bed board 91 connected to the first bed frame 5 and a second bed board 92 connected to the second bed frame 6.
[0036] Furthermore, the first bed board 91 and the second bed board 92 each include two sub-bed boards 911 and 921, which are connected by hinges 914 and 922 so that the first bed board 91 and the second bed board 92 can be in two states: unfolded and folded.
[0037] To secure the first bed board 91 in the unfolded position, this embodiment also includes a middle leg 93 for supporting the first bed board 91. The two sub-bed boards 911 of the first bed board 91 are respectively provided with connecting lugs 912 on opposite sides. When the first bed board 91 is in the unfolded state, the connecting lugs 912 of the two sub-bed boards 911 are staggered in the height direction so that the connecting holes 913 on the two connecting lugs 912 are aligned. The middle leg 93 has a pin 931 that passes through the connecting hole 913 to secure the first bed board 91 in the unfolded position.
[0038] In order to install the first bed frame 5 and the second bed frame 6, in this embodiment, the left armrest 3 and the right armrest 4 extend in a direction that approaches each other to form support rods 31 and 41 for supporting the first bed frame 5; the support rods 31 and 41 are provided with a first connecting groove 411, and the first bed frame 5 is provided with a first connecting post 52 that cooperates with the first connecting groove 411.
[0039] The first connecting groove 411 is divided into a first part 4111 and a second part 4112 that are interconnected. A flange 521 extends radially outward from the end of the first connecting post 52. The diameter of the first part 4111 is larger than the flange 521, and the diameter of the second part 4112 is smaller than the flange 521. During installation, the first connecting post 52 of the first bed frame 5 is inserted into the first part 4111, and then the first connecting post 52 is pushed horizontally into the second part 4112, allowing the flange 521 and the second part 4112 to engage and complete the installation.
[0040] Similarly, in order to fix the second bed frame 6 to the folding hinge 7, the end of the second support arm 72 away from the first support arm 71 extends into a support surface 721 for supporting the second bed board 92; the support surface 721 is provided with a second connecting groove, and the second bed frame 6 is provided with a second connecting post that cooperates with the second connecting groove.
[0041] The second connecting groove is divided into a first part and a second part that are interconnected. A flange extends radially outward from the end of the second connecting post. The diameter of the first part is larger than the flange, and the diameter of the second part is smaller than the flange. During installation, the second connecting post of the second bed frame 6 is inserted into the first part, and then the second connecting post is pushed horizontally into the second part, allowing the flange and the second part to engage and complete the installation.
[0042] In addition, the sides of the first bed frame 5 and the second bed frame 6 are respectively connected to the first bed board 91 and the second bed board 92 by screws.
[0043] Since the elastic units on the first bed board 91 and the second bed board 92 are not interconnected, the bed board also includes a third bed board 94 connected to the first bed board 91. The third bed board 94 is connected to the side of the first bed board 91 near the second bed board 92 and is set at an obtuse angle to the first bed board 91. The end of the third bed board 94 is connected to the elastic unit 21 on the first bed board 91 near the second bed board 92. In this way, the elastic unit 21 on the first bed board 91 near the second bed board 92 and the third bed board 94 can be connected together to increase stability.
[0044] To secure the padding layer 1, in this embodiment, the padding layer 1 has a wrapping portion 11 that wraps around the side of the elastic layer 2. Multiple first connectors 111 are spaced apart circumferentially at the bottom of the wrapping portion 11. The first connectors 111 are used for fixed connection with the bed frame. In this embodiment, the first connector 111 is a C-shaped slot used for engaging with the tubular components of the bed frame.
[0045] The above description is only a preferred embodiment of the present utility model, but the design concept of the present utility model is not limited thereto. Any non-substantial modifications made to the present utility model by those skilled in the art within the scope of the technology disclosed in the present utility model using this concept shall be deemed as an infringement of the protection scope of the present utility model.
Claims
1. A fixing structure for a sofa mattress layer, characterized in that... The sofa bed includes a left armrest, a right armrest, and a bed frame fixed between the left and right armrests. An elastic layer and a padding layer are sequentially arranged on the bed frame. The padding layer has a wrapping portion that wraps around the side of the elastic layer. A plurality of first connectors are arranged at intervals along the circumference on the lower surface of the wrapping portion. The first connectors form a detachable fixed connection with the bed frame.
2. The fixing structure of the sofa mattress layer according to claim 1, characterized in that: The first connector is a C-shaped slot used to engage with the tubular components of the bed frame.
3. A sofa bed, characterized in that... include: The structure includes a framework, a padding layer, and an elastic layer; the padding layer and the elastic layer employ the fixing structure described in any one of claims 1-2.
4. A sofa bed according to claim 3, characterized in that: The structural frame includes a left armrest, a right armrest, a bed frame, and a bed board; the bed frame consists of a first bed frame and a second bed frame arranged sequentially along the width direction of the armrest; the first bed frame is fixedly connected between the left armrest and the right armrest; the second bed frame is rotatably connected between the left armrest and the right armrest. The bed boards are respectively connected to the first bed frame and the second bed frame, and the elastic layer and the padding layer are set on the bed boards.
5. A sofa bed according to claim 4, characterized in that: The second bed frame has a first position and a second position relative to the first bed frame. When the second bed frame is in the first position, the included angle between the first bed frame and the second bed frame is 180°. When the second bed frame is in the second position, the included angle between the first bed frame and the second bed frame is less than 180°.
6. A sofa bed according to claim 5, characterized in that: The left armrest and the right armrest are respectively rotatably connected to the second bed frame via a folding hinge; The folding hinge includes a first arm and a second arm hinged at one end; the other end of the first arm is fixedly connected to the left armrest or the right armrest, and the other end of the second arm is fixedly connected to the second bed frame.
7. A sofa bed according to claim 4, characterized in that: The left and right handrails are fixedly connected by a crossbar.
8. A sofa bed according to claim 4, characterized in that: The bed board is divided into a first bed board connected to a first bed frame and a second bed board connected to a second bed frame.
9. A sofa bed according to claim 8, characterized in that: The first bed board and the second bed board each include two sub-bed boards, which are connected by hinges so that the first bed board can be in two states: unfolded and folded.
10. A sofa bed according to claim 9, characterized in that: It also includes a middle leg for supporting the first bed board, and the two sub-bed boards are respectively provided with connecting lugs on opposite sides; when the bed board is in the unfolded state, the connecting lugs of the two sub-bed boards are staggered in the height direction so that the connecting holes on the two connecting lugs are aligned; the middle leg has a pin that passes through the connecting hole to fix the bed board in the unfolded position.