Bed surface fixing structure of folding sofa bed
By designing fixing and lubrication components, the problem of instability in the wooden frame folding sofa bed surface has been solved, improving stability and durability, and ensuring safety and comfort during use.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-30
- Publication Date
- 2026-03-31
AI Technical Summary
The existing wooden frame folding sofa bed has an unstable fixed structure, which is prone to wear and wobbling during use, affecting the user experience.
The design employs fixed and lubrication components. Through the cooperation of plug-in columns and push-pull rods, a stable connection between the movable and fixed frame plates is achieved, and the lubrication components reduce wear and ensure smooth sliding.
It improves the stability and lifespan of the folding sofa bed surface, reduces wear and noise, and provides a safe and comfortable sleeping environment.
Smart Images
Figure CN224055645U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of folding sofa bed technology, specifically to a folding sofa bed surface fixing structure. Background Technology
[0002] A folding sofa bed is a multifunctional piece of furniture that can be used as a sofa during the day and converted into a bed at night or when needed. The fixed structure of the folding sofa bed is designed to ensure that the bed surface remains stable and flat when the sofa is converted into a bed, providing users with a safe and comfortable sleeping environment. Common fixed structures for folding sofa beds include locking springs, screws and nuts, hydraulic support rods, hinge brackets, and slide rail systems.
[0003] Existing folding sofa beds on the market are generally divided into steel frame and wooden frame structures. When using a wooden frame folding sofa bed, the sofa bed is usually unfolded to form a bed surface by pulling the outer wooden frame. When moving the outer frame, the cross-shaped combination of wooden strips forms a sliding rail structure, which causes a significant amount of wear and tear when pushing and pulling the wooden frame. At the same time, when the wooden frame folding sofa is unfolded to form a bed surface, it relies on its own weight to fix the bed surface, which leads to instability of the bed surface during use. When it collides with the outer wooden frame, the bed surface may shrink inward. Therefore, there is a need to propose a bed surface fixing structure for folding sofa beds. Utility Model Content
[0004] The purpose of this utility model is to provide a fixed structure for the bed surface of a folding sofa bed, so as to solve the problem of instability of the bed surface caused by the lack of a fixed structure for the wooden frame folding bed mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a folding sofa bed surface fixing structure, including a fixed frame plate, the fixed frame plate including a horizontal plate, and a fixed vertical plate fixedly connected to the top of the horizontal plate, the bottom of the horizontal plate having an insertion hole, and a movable frame plate movably arranged on one side of the fixed vertical plate, the movable frame plate including a movable vertical plate, and a movable plate fixedly connected to one side of the movable vertical plate, the bottom of the movable plate symmetrically equipped with rollers, side plates fixedly connected to both sides of the fixed frame plate, and a backing plate fixedly connected to one side of the fixed frame plate;
[0006] The side plate is equipped with a fixing component, which includes a fixing plate. A rear stop strip is fixedly connected to the inner bottom wall of the fixing plate, and a front stop strip is fixedly connected to the inner bottom wall of the fixing plate. A pressing block is movably arranged inside the fixing plate, and a push-pull rod is rotatably connected to one side of the pressing block. A rotating block is fixedly connected to the outer wall of one end of the push-pull rod, and a locking block is pressed on the outer side of the rotating block. A plug-in post is pressed on the top of the pressing block.
[0007] Preferably, a fixed guide rail is embedded in one side of the fixed longitudinal plate, and pulleys are installed at equal intervals inside the fixed guide rail. The fixed longitudinal plate is installed at equal intervals on the top of the horizontal plate, and the horizontal plate is installed at equal intervals between the side plates.
[0008] Preferably, both sides of the movable longitudinal plate are embedded with movable guide rails, and the movable guide rails are movably disposed on one side of the pulley. A fixing hole is opened in the vertical insertion hole on one side of the movable longitudinal plate, and the movable longitudinal plate is movably disposed between the fixed longitudinal plates.
[0009] Preferably, the fixing plate is fixedly installed at the bottom of the horizontal plate, and the extrusion block is movably disposed between the rear stop bar and the front stop bar. One side of the extrusion block has an inclined structure, and the bottom end of the insertion post has an inclined structure. The inclined surface of the extrusion block and the inclined surface of the insertion post are fitted together.
[0010] Preferably, the push-pull rod is movably disposed inside the side plate, and the rotating block is symmetrically installed at one end of the push-pull rod. The rotating block is pressed between the locking block and the side plate, and the insertion post passes through the insertion hole and is inserted into the fixing hole of the movable longitudinal plate.
[0011] Preferably, a lubrication assembly is fixedly connected to one side of the movable plate, and the lubrication assembly includes a central oil bag. The central oil bag is fixedly connected to the top side of the movable plate, and oil outlet holes are fixedly connected to both sides of the central oil bag. The oil outlet holes are horizontally arranged on one side of the movable guide rail. An oil inlet pipe is fixedly connected to the bottom of the central oil bag, and a side oil bag is fixedly connected to the top of the oil inlet pipe.
[0012] Preferably, the central oil bag and the side oil bags are both made of PVC material, and the central oil bag, the oil inlet pipe and the side oil bags are interconnected. The capacity of the side oil bags is half the capacity of the central oil bag, and an oil outlet is also provided on one side of the side oil bags. The two side oil bags are fixedly connected to both ends of the oil inlet pipe.
[0013] Compared with the prior art, the beneficial effects of this utility model are: the fixed structure of the folding sofa bed surface;
[0014] 1. By setting up the fixing components, after the movable frame plate is pulled outward, the push-pull rod is pushed inward to the side plate, thereby pressing the compression block against the insertion post, so that the insertion post is inserted into the insertion hole and the fixing hole of the movable longitudinal plate, thereby connecting and fixing the sides of the fixed frame plate and the movable frame plate, thereby improving the stability of the folding sofa bed surface during use, preventing the folding sofa bed surface from moving unexpectedly during use, thus providing users with a stable and safe sleeping environment, and increasing the use value of the fixing structure of the folding sofa bed surface;
[0015] 2. Through the lubrication component, when the movable frame plate is pushed into the fixed frame plate, the fixed longitudinal plate squeezes the central and side oil bags, thereby squeezing lubricating oil into the movable guide rail through the oil outlet. This lubricates the conversion structure as the movable guide rail moves on the pulley side, preventing wear between the movable and fixed longitudinal plates caused by repeated pushing and pulling over a long period, thus increasing the service life of the folding sofa bed. At the same time, the interlocking columns fix the movable longitudinal plate and the transverse plate, ensuring that the overall structure of the folding sofa bed will not wobble or rub, reducing noise and wear on the wooden frame, and increasing the practicality of the fixed structure of the folding sofa bed surface. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the connection structure between the fixed frame plate and the movable frame plate of this utility model;
[0018] Figure 3 This is a schematic diagram of the structure of the movable frame of this utility model;
[0019] Figure 4 This is a schematic diagram of the lubrication assembly of this utility model;
[0020] Figure 5 This is a schematic diagram of the disassembled structure of the fixing component of this utility model;
[0021] Figure 6 This is a schematic diagram of the internal structure of the fixing component of this utility model.
[0022] In the diagram: 1. Fixed frame plate; 11. Horizontal plate; 12. Fixed vertical plate; 13. Fixed guide rail; 14. Pulley; 15. Insertion hole; 2. Movable frame plate; 21. Movable vertical plate; 22. Movable guide rail; 23. Movable plate; 24. Roller; 3. Fixed assembly; 31. Fixed clamping plate; 32. Rear stop bar; 33. Front stop bar; 34. Extrusion block; 35. Push-pull rod; 36. Rotating block; 37. Clamping block; 38. Insertion post; 4. Side plate; 5. Backing plate; 6. Lubrication assembly; 61. Central oil bag; 62. Oil outlet; 63. Oil inlet pipe; 64. Side oil bag. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Please see Figure 1-6 This utility model provides a technical solution: a folding sofa bed surface fixing structure, including a fixed frame plate 1, the fixed frame plate 1 including a horizontal plate 11, and a fixed vertical plate 12 fixedly connected to the top of the horizontal plate 11. A fixed guide rail 13 is embedded in one side of the fixed vertical plate 12, and pulleys 14 are installed at equal intervals inside the fixed guide rail 13. The fixed vertical plate 12 is installed at equal intervals on the top of the horizontal plate 11, and the horizontal plate 11 is installed at equal intervals between the side plates 4. An insertion hole 15 is opened at the bottom of the horizontal plate 11, and a movable frame plate 2 is movably arranged on one side of the fixed vertical plate 12. The movable frame plate 2 includes a movable vertical plate 21, and movable guide rails 22 are embedded in both sides of the movable vertical plate 21. The movable guide rails 22 are movably arranged on one side of the pulleys 14. The fixed guide rails 13 and the movable guide rails 22 are both stainless steel. The steel material increases the durability of the sliding structure. The outermost fixed longitudinal plates 12 are only provided with fixed guide rails 13 and pulleys 14 on one side, while the middle fixed longitudinal plates 12 are provided with fixed guide rails 13 and pulleys 14 on both sides. This facilitates the sliding of the movable longitudinal plate 21 with the movable guide rail 22, improving the smoothness of the movable longitudinal plate 21. The movable longitudinal plate 21 has a fixed hole in the vertical insertion hole 15 on one side, and the movable longitudinal plate 21 is moved between the fixed longitudinal plates 12. The movable longitudinal plate 21 is fixedly connected to a movable plate 23 on one side. Rollers 24 are symmetrically installed at the bottom of the movable plate 23. The rollers 24 facilitate the movement of the movable plate 23. The fixed frame plate 1 is fixedly connected to side plates 4 on both sides, and a backing plate 5 is fixedly connected to one side of the fixed frame plate 1.
[0025] A fixing assembly 3 is installed inside the side plate 4. The fixing assembly 3 includes a fixing plate 31. A rear stop strip 32 is fixedly connected to the inner bottom wall of the fixing plate 31, and a front stop strip 33 is fixedly connected to the inner bottom wall of the fixing plate 31. A pressing block 34 is movably arranged inside the fixing plate 31. A push-pull rod 35 is rotatably connected to one side of the pressing block 34. A rotating block 36 is fixedly connected to the outer wall of one end of the push-pull rod 35. A locking block 37 is pressed onto the outer side of the rotating block 36. The locking block 37 is fixedly connected to the outer side of the side plate 4. A plug-in post 38 is pressed onto the top of the pressing block 34. The fixing plate 31 is fixedly installed at the bottom of the horizontal plate 11, and the pressing block 34 is movably arranged between the rear stop strip 32 and the front stop strip 33, so as to facilitate the limiting of the pressing block 34 when it is moved. When the push block 34 moves to the side of the rear stop bar 32, the bottom slope of the pressing block 34 moves to the bottom of the insertion post 38, and then the insertion post 38 moves downward by gravity, so that the top surface of the insertion post 38 is flush with the top surface of the horizontal plate 11. At this time, it is convenient for the moving vertical plate 21 to move to the inside of the fixed vertical plate 12 to become a sofa. One side of the pressing block 34 has a slope structure, and the bottom side of the insertion post 38 has a slope structure. The slope of the pressing block 34 and the slope of the insertion post 38 are fitted together, which makes it convenient for the pressing block 34 to press the insertion post 38 to move upward. The push-pull rod 35 is moved inside the side plate 4, and the rotating block 36 is symmetrically installed at one end of the push-pull rod 35. The rotating block 36 is pressed between the locking block 37 and the side plate 4. The insertion post 38 passes through the insertion hole 15 and is inserted into the fixed hole of the moving vertical plate 21.
[0026] A lubrication assembly 6 is fixedly connected to one side of the movable plate 23. The lubrication assembly 6 includes a central oil bag 61, which is fixedly connected to the top side of the movable plate 23. Oil outlet holes 62 are fixedly connected to both sides of the central oil bag 61, and the oil outlet holes 62 are horizontally positioned on one side of the movable guide rail 22. An oil inlet pipe 63 is fixedly connected to the bottom of the central oil bag 61, and a side oil bag 64 is fixedly connected to the top of the oil inlet pipe 63. Both the central oil bag 61 and the side oil bag 64 are made of PVC, thus possessing a certain degree of elasticity. The bag-like structure allows the internal lubricating oil to be squeezed out and used when the fixed longitudinal plate 12 compresses the central oil bag 61 and the side oil bags 64. The central oil bag 61, the oil inlet pipe 63, and the side oil bags 64 are interconnected. The capacity of the side oil bags 64 is half that of the central oil bag 61, and one side of each side oil bag 64 also has an oil outlet 62. The two side oil bags 64 are fixedly connected to both ends of the oil inlet pipe 63. Since the outermost movable longitudinal plate 21 only has a fixed guide rail 13 and a pulley 14 on one side, the side oil bags 64 with reduced capacity are used for lubrication. One end of the oil inlet pipe 63 is provided with a threaded cap. Figure 4 As shown in the magnified view, lubricating oil can then be added from here via a syringe.
[0027] Working principle: When using the folding sofa bed surface fixing structure, the moving plate 23 is pulled outward, thereby moving the moving longitudinal plate 21 between the fixed longitudinal plates 12, so that the moving guide rail 22 moves on the side of the pulley 14. After the moving longitudinal plate 21 moves to the point where the fixing hole and the insertion hole 15 are vertically aligned, the push-pull rod 35 is pushed inward to the side plate 4, thereby pushing the pressing block 34 to the side of the front stop 33. At the same time, the inclined surface of the pressing block 34 pushes the insertion post 38 upward, thereby inserting the insertion post 38 into the insertion hole 15 and the fixing hole, so that the moving longitudinal plate 21 and the horizontal plate 11 are fixed. Then, the push-pull rod 35 is rotated ninety degrees, so that the rotating block 36 is pressed against the inside of the locking block 37, thereby fixing the position of the pressing block 34. Then, the surface of the folding sofa bed is fixed by the fixing component 3.
[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A folding sofa bed bed surface fixing structure comprising a fixing frame plate (1), characterized in that: The fixed frame plate (1) includes a horizontal plate (11), and the top of the horizontal plate (11) is fixedly connected with a fixed vertical plate (12), the bottom of the horizontal plate (11) is provided with a insertion hole (15), and the side of the fixed vertical plate (12) is movably provided with a movable frame plate (2), the movable frame plate (2) includes a movable vertical plate (21), and the side of the movable vertical plate (21) is fixedly connected with a movable plate (23), the bottom of the movable plate (23) is symmetrically provided with a roller (24), and the two sides of the fixed frame plate (1) are fixedly connected with a side plate (4), and the side of the fixed frame plate (1) is fixedly connected with a back plate (5). The inside of the side plate (4) is provided with a fixed assembly (3), and the fixed assembly (3) includes a fixed clamping plate (31), the inner bottom wall of the fixed clamping plate (31) is fixedly connected with a rear blocking strip (32), and the inner bottom wall of the fixed clamping plate (31) is fixedly connected with a front blocking strip (33), the inside of the fixed clamping plate (31) is movably provided with an extrusion block (34), and the side of the extrusion block (34) is rotatably connected with a push-pull rod (35), one end of the push-pull rod (35) is fixedly connected with a rotating block (36), and the outside of the rotating block (36) is extrudedly provided with a clamping block (37), and the top of the extrusion block (34) is extrudedly provided with a insertion column (38).
2. The folding sofa bed deck securement structure of claim 1, wherein, The side of the fixed vertical plate (12) is embedded with a fixed guide rail strip (13), and the inside of the fixed guide rail strip (13) is installed with a pulley (14) at equal intervals, the fixed vertical plate (12) is installed at the top of the horizontal plate (11) at equal intervals, and the horizontal plate (11) is installed between the side plates (4) at equal intervals.
3. The folding sofa bed deck securement structure of claim 1, wherein, The two sides of the movable vertical plate (21) are embedded with movable guide rail strips (22), and the movable guide rail strips (22) are movably arranged on one side of the pulley (14), and the side of the movable vertical plate (21) is provided with a fixed hole perpendicular to the insertion hole (15), and the movable vertical plate (21) is movably arranged between the fixed vertical plate (12).
4. The bed surface fixation structure of claim 1, wherein The fixed clamping plate (31) is fixedly installed at the bottom of the horizontal plate (11), and the extrusion block (34) is movably arranged between the rear blocking strip (32) and the front blocking strip (33), the side of the extrusion block (34) is inclined, and the bottom end of the insertion column (38) is inclined, and the inclined surface of the extrusion block (34) is arranged to be matched with the inclined surface of the insertion column (38).
5. The folding sofa bed deck securement structure of claim 1, wherein, The push-pull rod (35) is movably arranged in the inside of the side plate (4), and the rotating block (36) is symmetrically installed at one end of the push-pull rod (35), the rotating block (36) is extrudedly arranged between the clamping block (37) and the side plate (4), and the insertion column (38) penetrates the insertion hole (15) and is inserted into the fixed hole of the movable vertical plate (21).
6. The folding sofa bed deck securement structure of claim 1, wherein, One side of the moving plate (23) is fixedly connected with a lubricating assembly (6), and the lubricating assembly (6) comprises a middle oil bag (61), the middle oil bag (61) is fixedly connected to the top side of the moving plate (23), and both sides of the middle oil bag (61) are fixedly connected with oil outlet holes (62), the oil outlet holes (62) are horizontally arranged on one side of the moving rail strip (22), the bottom of the middle oil bag (61) is fixedly connected with an oil inlet pipe (63), and the top of the oil inlet pipe (63) is fixedly connected with a side oil bag (64).
7. The bed surface fixation structure of claim 6, wherein The middle oil bag (61) and the side oil bag (64) are both made of PVC material, and the middle oil bag (61), the oil inlet pipe (63) and the side oil bag (64) are arranged in communication with each other, the capacity of the side oil bag (64) is half of the capacity of the middle oil bag (61), and the side oil bag (64) is also provided with an oil outlet hole (62) on one side, and the two side oil bags (64) are fixedly connected to both ends of the oil inlet pipe (63).