Linkage sofa turnover bed
By linking the folding bed and sofa frame with transmission rods and gas springs, the problem of cumbersome operation when switching between existing sofa beds is solved, enabling quick and easy switching between sofa bed states, improving space utilization and user experience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGMEN NEWHAOWEI TECHNOLOGY HARDWARE PRODUCT CO LTD
- Filing Date
- 2025-05-16
- Publication Date
- 2026-05-12
AI Technical Summary
The existing sofa bed switching operation is cumbersome and cannot be completed in one step, which affects space utilization and user experience.
The folding bed and sofa are connected by a transmission linkage, and the folding frame of the folding bed and sofa is linked by a gas spring, which simplifies the switching process and makes the movements of the folding bed and sofa synchronized.
It enables quick switching between sofa and bed modes, saves space, improves space utilization, simplifies user operation, and makes it easy to switch between bed and sofa modes.
Smart Images

Figure CN224219784U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of sofa flip-up beds, and in particular to a linked sofa flip-up bed. Background Technology
[0002] With the advancement of urbanization and the gradual increase in housing costs, small apartments have become highly sought after in large and medium-sized cities. For owners of small apartments, maximizing space is crucial. A sofa bed, combining a sofa and a bed, can be used as a sofa in leisure time and as a bed when needed. This not only reduces renovation costs but also improves space utilization. The aforementioned sofa bed includes a cabinet, a sofa, and a fold-down bed. The cabinet is vertically positioned, and the fold-down bed flips up or down relative to the cabinet, folding or unfolding within the cabinet. The sofa is located at the bottom of the cabinet, below the fold-down bed, and includes a folding frame, seat cushions, and a backrest. The folding frame raises or lowers the seat cushions when operated by the user. To switch to a bed, the user first removes the backrest, then folds the folding frame downwards, lowering the seat cushions. Next, the fold-down bed flips down to a horizontal position, with the sofa below the bed, thus transforming the sofa into a bed. When converting to a sofa, the user folds the flip-up bed upwards into the cabinet, then unfolds the sofa frame upwards, lifts the sofa cushions, and finally places the sofa backrest, thus transforming it into a sofa. As can be seen, the above-described sofa bed conversion process is cumbersome and cannot be completed in one step. Utility Model Content
[0003] The purpose of this utility model is to provide a sofa flip bed that is easy, convenient, and can be switched in one step.
[0004] The purpose of this utility model is achieved as follows:
[0005] A linkage sofa-folding bed includes a sofa, a transmission linkage, a folding bed, and a storage bed cabinet. The folding bed includes a mattress, a folding bed frame, a panel, and a first gas spring. The folding bed frame flips up and down and is mounted on the storage bed cabinet. The mattress and panel are respectively located on the upper and lower surfaces of the folding bed frame. The upper end of the first gas spring is rotatably mounted on the side panel of the storage bed cabinet, and the lower end of the first gas spring is rotatably connected to the folding bed frame. The sofa includes a seat cushion and a sofa folding frame. The seat cushion is located on the sofa folding frame. The upper end of the transmission linkage is rotatably connected to the folding bed frame, and the lower end of the transmission linkage is rotatably connected to the sofa folding frame. When the folding bed frame flips down, it drives the sofa folding frame to fold down through the transmission linkage, and the seat cushion descends with the sofa folding frame, with the seat cushion located below the folding bed. When the folding bed frame flips up, it drives the sofa folding frame to unfold upwards through the transmission linkage, and the seat cushion rises with the sofa folding frame.
[0006] This invention connects a folding bed and a sofa via a transmission linkage. When switched to folding bed mode, the bed flips downwards and unfolds. The folding bed, through the transmission linkage, causes the sofa folding frame to fold downwards, and the seat cushions follow suit, lowering to create space and preventing interference between the bed and sofa. This significantly reduces the space required for switching from sofa to bed mode, further saving space. When switched to sofa mode, the bed flips upwards into a storage cabinet, and the folding bed, through the transmission linkage, causes the sofa folding frame to unfold upwards, raising the seat cushions to become a sofa. Because the sofa cushions can move downwards to create space with the bed's movement, users can switch to bed mode without removing the cushions, greatly simplifying operation.
[0007] The present invention can be further improved in the following ways.
[0008] The sofa folding frame includes a first link, a lifting frame, a fixed frame, and a second link. The first link, the lifting frame, the fixed frame, and the second link are connected together in sequence in the form of a four-bar linkage with a planar hinge. The fixed frame is fixedly connected to the bottom plate of the storage bed cabinet. The lifting frame is located above the fixed frame, and the seat cushion is placed on the lifting frame.
[0009] The upper end of the transmission link is rotatably connected to the tilting bed frame, and the lower end of the transmission link is rotatably connected to the lifting frame.
[0010] The sofa also includes a backrest, which is fixed to the lower surface of the panel and located behind the seat cushion. The backrest unfolds when the flip bed flips up or folds down, so users can switch to the bed mode without removing the backrest from the sofa, greatly facilitating the user's operation.
[0011] The sofa also includes two armrests, which are fixedly connected to the two side panels of the storage bed cabinet. The two armrests are located on the left and right sides of the seat cushion, respectively.
[0012] Once unfolded, the flip bed is positioned between the two armrests.
[0013] The sofa also includes a second gas spring, the upper end of which is rotatably connected to the lifting frame, and the lower end of which is rotatably connected to the fixed frame.
[0014] The transmission connecting rod is L-shaped.
[0015] The sofa also includes a front panel, which is mounted on the second link.
[0016] The flip bed frame has support legs on both the left and right sides for rotation.
[0017] The beneficial effects of this utility model are as follows:
[0018] This invention connects a folding bed and a sofa via a transmission linkage. When switched to folding bed mode, the bed flips down and unfolds, causing the sofa folding frame to fold down via the transmission linkage. The seat cushions also descend, creating space and preventing interference between the bed and sofa, thus achieving the bed mode. This significantly reduces the space required for switching from sofa to bed mode, further saving space. When switched to sofa mode, the bed flips up and folds into a storage bed cabinet, causing the sofa folding frame to unfold upwards via the transmission linkage. The seat cushions also rise, achieving the sofa mode. Because the sofa cushions can move down to create space with the bed's movement, users can switch to bed mode without removing the sofa cushions, greatly simplifying the user experience. Attached Figure Description
[0019] Figure 1 This is a structural diagram of the linkage sofa flip bed of this utility model when it is in sofa mode.
[0020] Figure 2 This is a structural schematic diagram of the linked sofa flip bed of this utility model from another angle when it is in sofa mode.
[0021] Figure 3 This is a structural diagram of the linkage sofa flip bed of this utility model when it is in the bed state.
[0022] Figure 4 This is a structural schematic diagram of the linked sofa flip bed of this utility model from another angle when it is in the bed position.
[0023] Figure 5 This is a schematic diagram of the structure of the new type of linked sofa flip bed in sofa mode with the two armrests, left side panel, and right side panel hidden.
[0024] Figure 6 This is a structural diagram of the new type of linked sofa flip bed in sofa mode with the two armrests, left side panel, and right side panel hidden from another angle.
[0025] Figure 7 This is a schematic diagram of the structure of the new type of linked sofa flip bed in the bed state, with two armrests, mattress, seat cushion, backrest, left side panel, and right side panel hidden behind it.
[0026] Figure 8 This is a schematic diagram of the structure of the new type of linked sofa flip bed in the bed state, with two armrests, mattress, seat cushion, backrest, left side panel, and right side panel hidden behind it.
[0027] Figure 9 This is a schematic diagram of the structure of the new type of linked sofa flip bed in sofa mode, with two armrests, mattress, seat cushion and backrest hidden.
[0028] Figure 10 This is a schematic diagram of the structure of the new type of linked sofa flip bed in sofa mode, with two armrests, mattress, seat cushion and backrest hidden. Detailed Implementation
[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0030] Example 1, as Figures 1 to 10 As shown, a linkage sofa flip bed includes a sofa 2, a flip bed 19, a transmission linkage 3, and a storage bed cabinet 1. The storage bed cabinet 1 is a cubic cabinet with an open front to allow the flip bed to flip into and out of the cabinet space of the storage bed cabinet 1.
[0031] The flip bed 19 includes a mattress 11, a flip bed frame 10, a panel 12, and a first gas spring 14. The flip bed frame is flipped up and down and installed on a storage bed cabinet. The mattress 11 and the panel 12 are respectively installed on the upper and lower surfaces of the flip bed frame 10. The upper end of the first gas spring 14 is rotatably installed on the side panel of the storage bed cabinet 1, and the lower end of the first gas spring 14 is rotatably connected to the inner end of the flip bed frame 10.
[0032] Sofa 2 includes a seat cushion 20, a sofa folding frame 211, a backrest 21, a second gas spring 210, a front panel 12, and two armrests 22. The seat cushion 20 is located on the sofa folding frame 211.
[0033] The upper end of the transmission link 3 is rotatably connected to the flip bed frame 10, and the lower end of the transmission link 3 is rotatably connected to the sofa folding frame 211. When the flip bed frame 10 flips downward, the flip bed frame 10 drives the sofa folding frame 211 to fold downward through the transmission link 3, and the seat cushion 20 descends with the sofa folding frame, with the seat cushion located below the flip bed. When the flip bed frame 10 flips upward, the flip bed frame 10 drives the sofa folding frame 211 to unfold upward through the transmission link 3, and the seat cushion 20 rises with the sofa folding frame.
[0034] This is a more specific technical solution of the present invention.
[0035] Storage bed cabinet 1 is a cubic cabinet with an opening, formed by connecting the top panel, left side panel, right side panel, back side panel, and bottom panel.
[0036] The sofa folding frame 211 includes a first connecting rod 27, a lifting frame 26, a fixed frame 28, and a second connecting rod 29. The first connecting rod 27, the lifting frame 26, the fixed frame 28, and the second connecting rod 29 are connected together in sequence in the form of a four-bar linkage with a planar hinge. The fixed frame 28 is fixedly connected to the bottom plate 18 of the storage bed cabinet 1. The lifting frame is located above the fixed frame, and the seat cushion 20 is placed on the lifting frame 26.
[0037] The upper end of the transmission link 3 is rotatably connected to the tilting bed frame 10, and the lower end of the transmission link 3 is rotatably connected to the lifting frame 26.
[0038] The backrest 21 is fixed to the lower surface of the panel 12 and is located behind the seat cushion 20.
[0039] The two armrests 22 are fixedly connected to the two side panels 17 of the storage bed cabinet 1, and the two armrests 22 are located on the left and right sides of the seat cushion 20 respectively.
[0040] Once unfolded, the flip bed is positioned between the two armrests.
[0041] The upper end of the second gas spring 210 is rotatably connected to the lifting frame, and the lower end of the second gas spring 210 is rotatably connected to the fixed frame 28.
[0042] The transmission connecting rod 3 is L-shaped.
[0043] Sofa 2 also includes a front panel 24, which is mounted on the second link 29.
[0044] The left and right sides of the flip bed frame 10 are equipped with support feet 13.
[0045] The working principle of this utility model is as follows:
[0046] When a user wants to use the flip bed, the user pulls the flip bed frame 10 downwards. The first gas spring 14 buffers the downward speed of the flip bed frame 10, and the flip bed frame 10 flips downwards stably. The flip bed frame 10 drives the mattress 11 to flip downwards, and the backrest 21 also flips downwards with the flip bed frame 10. The flip bed frame 10 drives the sofa folding frame 211 to fold downwards through the transmission link 3. The transmission link 3 drives the lifting frame 26 to move forward. The lifting frame 26 drives the top of the first link 27 and the top of the second link 29 to rotate downwards, thereby driving the lifting frame 26 to descend and move forward. The lifting frame 26 moves downwards and forwards stably. The second gas spring 210 buffers the movement speed of the lifting frame 26. The seat cushion 20 descends and moves forward with the lifting frame 26. The backrest 21 and the seat cushion 20 are staggered. The front panel 24 folds down with the downward rotation of the second link 29 until the flip bed frame 10 flips to a horizontal state. The support legs 13 rotate out and stand on the ground. At this point, the present invention has been switched to the bed state.
[0047] When the user wants to use the sofa, the user pulls the flip bed frame 10 upwards. The first gas spring 14 assists in driving the flip bed frame 10 to flip upwards, and the backrest 21 also flips upwards with the flip bed frame 10. The transmission link 3 drives the lifting frame 26 to move backwards and upwards. The lifting frame 26 drives the top of the first link 27 and the top of the second link 29 to rotate backwards. The second gas spring 210 assists in driving the lifting frame 26 to move backwards and upwards. The seat cushion 20 moves backwards and upwards with the lifting frame 26. The front panel 24 unfolds as the second link 29 rotates upwards until the flip bed frame 10 and the mattress 11 are flipped into the storage bed cabinet 1. The panel 12 is in an upright state and closes the storage bed cabinet 1. The backrest is now located behind the seat cushion 20. At this point, the utility model has been switched to the sofa state.
Claims
1. A linkage sofa flip bed, comprising a sofa, a flip bed and a storage bed cabinet, the flip bed comprising a mattress, a flip bed frame, a panel and a first gas spring, the flip bed frame flipping up and down is mounted on the storage bed cabinet, the mattress and the panel are respectively mounted on the upper and lower surfaces of the flip bed frame, the upper end of the first gas spring is rotatably mounted on the side panel of the storage bed cabinet, and the lower end of the first gas spring is rotatably connected to the flip bed frame; The sofa includes a seat cushion and a sofa folding frame, with the seat cushion located on the sofa folding frame; Its characteristics are, It also includes a transmission linkage. The upper end of the transmission linkage is rotatably connected to the flip bed frame, and the lower end of the transmission linkage is rotatably connected to the sofa folding frame. When the flip bed frame flips down, it drives the sofa folding frame to fold down through the transmission linkage, and the seat cushion descends with the sofa folding frame, with the seat cushion located below the flip bed. When the flip bed frame flips up, it drives the sofa folding frame to unfold upward through the transmission linkage, and the seat cushion rises with the sofa folding frame.
2. The linkage sofa flip-up bed according to claim 1, characterized in that, The sofa folding frame includes a first link, a lifting frame, a fixed frame, and a second link. The first link, the lifting frame, the fixed frame, and the second link are connected together in sequence in the form of a four-bar linkage with a planar hinge. The fixed frame is fixedly connected to the bottom plate of the storage bed cabinet. The lifting frame is located above the fixed frame, and the seat cushion is placed on the lifting frame.
3. The linkage sofa flip-up bed according to claim 2, characterized in that, The upper end of the transmission link is rotatably connected to the tilting bed frame, and the lower end of the transmission link is rotatably connected to the lifting frame.
4. The linkage sofa flip-up bed according to claim 1, characterized in that, The sofa also includes a backrest, which is fixed to the lower surface of the panel and located behind the seat cushion.
5. The linkage sofa flip-up bed according to claim 1, characterized in that, The sofa also includes two armrests, which are fixedly connected to the two side panels of the storage bed cabinet. The two armrests are located on the left and right sides of the seat cushion, respectively.
6. The linkage sofa flip-up bed according to claim 5, characterized in that, Once unfolded, the flip bed is positioned between the two armrests.
7. The linkage sofa flip-up bed according to claim 2, characterized in that, The sofa also includes a second gas spring, the upper end of which is rotatably connected to the lifting frame, and the lower end of which is rotatably connected to the fixed frame.
8. The linkage sofa flip-up bed according to claim 1, characterized in that, The transmission connecting rod is L-shaped.
9. The linkage sofa flip-up bed according to claim 2, characterized in that, The sofa also includes a front panel, which is mounted on the second link.
10. The linkage sofa flip-up bed according to claim 1, characterized in that, The flip bed frame is equipped with rotatable support legs on its left and right sides.