A multifunctional bed table sofa

Abstract

The application discloses a multifunctional bed table sofa, and relates to the technical field of furniture. The multifunctional bed table sofa comprises a sofa assembly, a table plate assembly, hinges and a bed frame mechanism. The two ends of the sofa assembly and the table plate assembly are connected through two groups of hinges to form a turnover support structure which can be switched between a horizontal table state and a vertical backrest state. The bed frame mechanism is slidingly arranged at the front end of the sofa assembly and can be hidden or extended outward to form a bed body extension. The multifunctional bed table sofa integrates a sofa, a turnover table plate and a telescopic bed body, realizes one object with multiple functions, integrates three core functions of the sofa, the office table and the telescopic bed body, and can be quickly switched among the three modes through simple turnover and push-pull operations. The multifunctional bed table sofa can simultaneously meet the use requirements of all scenes, such as daily sitting and lying, guest relaxing, computer office, writing and learning, meal and storage, and temporary sleeping. The multifunctional bed table sofa replaces three furniture, such as a traditional sofa, a table and a bed, greatly reduces the number of furniture to be purchased, reduces the furniture purchase cost of users, and improves the comprehensive utilization rate of furniture and the use cost performance ratio.

Description

Technical Field

[0001] This invention relates to the field of furniture technology, specifically to a multifunctional bed-table-sofa. Background Technology

[0002] Against the backdrop of accelerating urbanization, urban residential units are showing a clear trend towards smaller and more compact designs. Indoor living, activity, and storage spaces are constantly being compressed, making traditional single-function furniture insufficient to meet the actual needs of modern home life. Sofas, desks, and beds, as the three most frequently used basic pieces of furniture in daily life, are typically placed separately in traditional home layouts. This not only occupies a large amount of indoor floor space but also causes cramped circulation and limited movement. Furthermore, purchasing these separately significantly increases furniture procurement and decoration costs, resulting in low space utilization and cost-effectiveness.

[0003] From the perspective of existing market products, multifunctional sofa beds have become a common choice for users of small apartments. However, most multifunctional sofa beds on the market currently have obvious functional limitations, only achieving simple switching between sofa and bed forms. They lack integrated design and flexible storage folding table structures, failing to meet the high-frequency daily use needs such as home office, writing and studying, leisure storage, and dining. Their functions are limited and their adaptability to different scenarios is poor. The few sofa products with table structures often have externally attached tables with fixed structures that cannot be stored. Their placement is awkward and occupies extra space, affecting the normal sitting and leaning experience of the sofa and also detracting from the overall aesthetics of the home. Neither practicality nor aesthetics can meet user requirements.

[0004] Regarding the telescopic structure of the bed frame, conventional multi-functional sofa beds often use simple sliding rails, single linkages, or direct-push sliding structures. These structures suffer from problems such as jamming during extension, high resistance to pushing and pulling, unstable extension, and poor support stability. The bed frame has limited load-bearing capacity and is prone to structural loosening, deformation, and collapse after long-term use, resulting in a short service life. At the same time, the seat cushions of conventional products are generally designed as separate independent units without a linkage structure between them. After the bed frame is extended, problems such as separation, misalignment, warping, and excessive gaps between the seams are likely to occur. This results in insufficient flatness between the seat surface and the bed surface, seriously affecting the comfort of sitting and lying down and the neatness of the appearance, and failing to provide users with a good user experience.

[0005] Furthermore, existing multifunctional sofa beds generally suffer from problems such as incomplete storage, redundant structure, and complex operation. Components such as the bed frame, support, and table legs cannot be completely concealed, and exposed parts affect the overall appearance. Some products require tools or complex disassembly / assembly steps to switch between modes, making them difficult for elderly, children, and female users to operate independently, indicating a lack of user-friendly design. In conclusion, existing multifunctional furniture products cannot simultaneously meet the comprehensive needs of functional integration, space efficiency, structural stability, user comfort, ease of operation, and aesthetic appeal. They are ill-suited for the efficient use of compact spaces such as small apartments, rental units, and condominiums. Therefore, developing a multifunctional sofa bed with a reasonable structure, comprehensive functions, convenient switching, thorough storage, and stable durability has significant practical importance and market value.

[0006] To address this, we have proposed a multifunctional bed-table-sofa design. Through innovative designs such as an integrated structural design, a flip-up tabletop assembly, a telescopic bed frame mechanism, an integrated flexible connecting cushion, a four-bar precision telescopic mechanism, and a foldable support bracket, we have solved the technical pain points of traditional products, such as limited functionality, large space occupation, unstable telescopic movement, misaligned cushions, complex operation, and incomplete storage. This design meets the needs of modern users for multifunctional, compact, and highly comfortable furniture. Summary of the Invention

[0007] Therefore, the present invention provides a multifunctional bed-table-sofa to solve the above-mentioned problems in the prior art.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a multifunctional bed-table sofa, comprising: a sofa assembly, a table assembly, hinges and a bed frame mechanism, wherein the two ends of the sofa assembly and the table assembly are connected by two hinges to form a flip-up support structure that can switch between a horizontal tabletop state and a vertical backrest state, and the bed frame mechanism is slidably disposed at the front end of the sofa assembly, and can be folded away or extended outward to form a bed extension.

[0009] The bed frame mechanism includes a base, a linkage assembly, seat cushion four, seat cushion five, a folding bracket hinge, a bracket, rollers, and side pads. The base is slidably installed on the front side of the seat frame, and seat cushion four is located above the base. The two ends of the base and seat cushion four are connected to two sets of linkage assemblies. Seat cushion four and seat cushion five are connected by sewing flexible fabric to form an integrated flexible connection structure, ensuring position linkage during flipping and stretching adjustment, and avoiding seat cushion separation and misalignment. The bracket is hinged to the bottom of seat cushion five through the folding bracket hinge, and can be freely folded open or stored.

[0010] Furthermore, the sofa assembly includes a seat frame, armrests, seat cushion one, seat cushion two, and seat cushion three. Two sets of armrests are fixedly installed on both sides of the seat frame. Seat cushion one is laid on the front end of the seat frame. Seat cushion two and the seat frame are connected by a two-way self-locking hinge. Seat cushion one and seat cushion three are connected by sewing flexible fabric to form an integrated flexible connection structure, ensuring position linkage during flipping and stretching adjustment, and preventing seat cushion separation and misalignment.

[0011] Furthermore, the tabletop assembly includes table legs, a tabletop, a cushion, and table feet. The upper ends of the two sets of table legs are fixedly connected to the tabletop, and the lower ends of the table legs are provided with table feet. The cushion is fixedly installed on the rear side of the tabletop, and the tabletop assembly is rotatably connected to the armrest of the sofa assembly via hinges.

[0012] Furthermore, the top of the seat cushion four is provided with a stepped groove, and the stepped groove is adapted to the size of the seat cushion three. The side pad is fixedly installed on the front side of the base, and the bottom of the base is provided with multiple sets of rollers to enable the base to slide within the seat frame.

[0013] Furthermore, the linkage assembly includes a first fixed plate, a second fixed plate, a first connecting rod, a second connecting rod, a third connecting rod, a fourth connecting rod, and a positioning post. The first fixed plate is fixedly connected to the bottom of the fourth seat cushion, the second fixed plate is fixedly connected to the inner wall of the base, the two ends of the first connecting rod are respectively hinged to the first fixed plate and the second fixed plate, the two ends of the second connecting rod are respectively hinged to the first fixed plate and the third connecting rod, the free end of the third connecting rod is hinged to the second fixed plate, and the two ends of the fourth connecting rod are respectively hinged to the second fixed plate and the second connecting rod. The positioning post is disposed on the second fixed plate and is used to limit the rotational stroke of the linkage assembly.

[0014] Furthermore, the bottom of the seat frame is provided with a receiving groove that is adapted to the base, and the base can be slidably stored in the receiving groove.

[0015] Furthermore, the front end of the armrest is provided with a stepped groove, one end of the hinge is fixedly connected to the stepped groove, and the other end of the hinge is fixedly connected to the side wall of the table leg.

[0016] Furthermore, the positioning post is located in the middle of the fixed plate two, and the connecting rod three is provided with a limiting groove adapted to the positioning post. When the connecting rod assembly extends to its maximum stroke, the positioning post is embedded in the limiting groove to achieve positioning.

[0017] Furthermore, the connecting fabric between cushion one and cushion three, and cushion four and cushion five, is a wear-resistant fabric that can adapt to deformation as the cushion is bent and stretched.

[0018] Furthermore, when the table panel assembly rotates around the hinge to a horizontal position, the table panel and the upper surface of the armrest are flush, forming a table shape. When the table panel assembly rotates around the hinge to a vertical position, the backrest faces the inside of the seat frame, forming a sofa-shaped backrest.

[0019] The present invention has the following advantages:

[0020] This furniture integrates three core functions: sofa for relaxation, office desk, and extendable bed. It can be quickly switched between the three modes through simple flipping and pushing / pulling operations. It can meet the needs of users in all scenarios, such as sitting and lying down, entertaining guests and relaxing, working on a computer, writing and studying, dining and placing items, and temporary sleeping. One piece of furniture replaces three pieces of traditional furniture: sofa, desk and bed. This greatly reduces the number of pieces of furniture to be purchased, lowers the user's furniture procurement costs, and improves the overall utilization rate and cost-effectiveness of furniture.

[0021] The tabletop assembly can be flexibly flipped via hinges, freely switching between a horizontal desktop and a vertical backrest. The bed frame mechanism can slide to store or extend outwards, effectively meeting various user needs such as leisure sitting and lying down, office storage, and temporary rest and sleep. The overall footprint is the same as a regular sofa, without taking up additional indoor space, greatly improving the overall utilization rate of furniture. It is especially suitable for small apartments and rental spaces, effectively saving indoor placement space and reducing furniture purchase costs.

[0022] The bottom of the seat cushion is equipped with a foldable support frame, which can be folded freely through the hinge of the folding support frame. When the bed is unfolded for use, the support frame is lowered to form auxiliary support, which enhances the load-bearing capacity and placement stability of the bed. When stored, the support frame is folded and hidden, which does not take up storage space. The structure is reasonably designed.

[0023] Sofa cushions and bed frame cushions are made of wear-resistant, flexible fabric and sewn together in one piece. They are always linked during stretching, flipping, and folding, effectively avoiding common problems of separation, misalignment, curling edges, and excessive gaps in split cushions. The seat surface and bed surface are flat and continuous throughout, greatly improving the comfort of sitting and lying down and the neatness of the appearance.

[0024] The bed frame adopts a four-bar composite telescopic mechanism, combined with a self-locking design of positioning columns and limit grooves, so that the extension stroke is precise and controllable, without jamming, shaking, or accidental retraction; the bottom of the seat cushion is equipped with a foldable bracket, which forms multi-point support when unfolded, significantly improving the load-bearing capacity and stability of the bed, and is not easily deformed after long-term use. Attached Figure Description

[0025] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0026] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed in the present invention.

[0027] Figure 1 This is a schematic diagram of the bed frame structure of a multifunctional bed-table-sofa according to the present invention.

[0028] Figure 2 This is a schematic diagram of the sofa form structure of a multifunctional bed-table sofa according to the present invention.

[0029] Figure 3 This is a schematic diagram of the table-shaped structure of a multifunctional bed-table sofa according to the present invention.

[0030] Figure 4 This is a structural schematic diagram of the sofa component in a multifunctional bed-table-sofa according to the present invention.

[0031] Figure 5 This is a schematic diagram of the tabletop assembly in a multifunctional bed-table-sofa according to the present invention.

[0032] Figure 6 This is a schematic diagram of the bed frame mechanism in a multifunctional bed-table-sofa according to the present invention.

[0033] Figure 7 This is a schematic diagram of the unfolded linkage assembly in a multifunctional bed-table-sofa according to the present invention.

[0034] Figure 8 This is a schematic diagram of the storage structure of the connecting rod assembly in a multifunctional bed-table-sofa according to the present invention.

[0035] In the diagram: 1. Sofa assembly; 11. Seat frame; 12. Armrest; 13. Seat cushion one; 14. Seat cushion two; 15. Seat cushion three; 2. Tabletop assembly; 21. Table legs; 22. Tabletop; 23. Backrest cushion; 24. Table legs; 3. Hinges; 4. Bed frame mechanism; 41. Base; 42. Linkage assembly; 421. Fixing plate one; 422. Fixing plate two; 423. Link one; 424. Link two; 425. Link three; 426. Link four; 427. Positioning post; 43. Seat cushion four; 44. Seat cushion five; 45. Folding bracket hinge; 46. Bracket; 47. Casters; 48. Side cushions. Detailed Implementation

[0036] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] like Figures 1 to 8 As shown, a multifunctional bed-table-sofa includes: a sofa component 1, a tabletop component 2, hinges 3, and a bed frame mechanism 4. Specifically, the two ends of the sofa component 1 and the tabletop component 2 are connected by two sets of hinges 3 to form a flip-up support structure that can switch between a horizontal tabletop state and a vertical backrest state. The hinges 3 are damping hinges, and the flipping process is slow, smooth, and without impact or abnormal noise. The tabletop component 2 can be folded and unfolded horizontally with one click relative to the sofa component 1 through the damping hinges 3, which is labor-saving and precise in positioning. The bed frame mechanism 4 is slidably set at the front end of the sofa component 1, which can be folded away or extended outward to form a bed extension. When unfolded, the bed surface is flat and wide, meeting the comfort needs of adults. The overall structure integrates a sofa, a flip-up tabletop, and a retractable bed into one unit, realizing multiple uses and meeting the needs of sitting, lying down, working, storing items, and sleeping in all scenarios, greatly improving the comprehensive utilization rate of furniture.

[0038] The bed frame mechanism 4 includes a base 41, a linkage assembly 42, a fourth seat cushion 43, a fifth seat cushion 44, a folding bracket hinge 45, a bracket 46, rollers 47, and side pads 48. Specifically, the base 41 is slidably installed on the front side of the seat frame 11, and the fourth seat cushion 43 is located above the base 41. The two ends of the base 41 and the fourth seat cushion 43 are connected to two sets of linkage assemblies 42, with a symmetrical design and even force distribution. The fourth seat cushion 43 and the fifth seat cushion 44 are connected by sewing flexible fabric to form an integrated flexible connection structure, ensuring position linkage during flipping and stretching adjustment, and avoiding seat cushion separation, misalignment, warping, and excessive gaps. The top of the fourth seat cushion 43 has a stepped groove, and the size of the stepped groove is adapted to the third seat cushion 15. After the fourth seat cushion 43 and the fifth seat cushion 44 are unfolded, the third seat cushion 15 can be flipped and placed in the stepped groove, resulting in a seamless fit and a flat surface after splicing. The side pads 48 are fixedly installed on the front of the base 41. The side protection is formed when the bed frame is folded up, improving safety. The bottom of the base 41 is equipped with multiple sets of rollers 47, which are silent and wear-resistant, rolling smoothly without noise. This allows the base 41 to be easily pushed and pulled within the seat frame 11. The roller structure at the bottom of the bed frame base 41 makes it easier and less strenuous to slide and push the base 41 within the seat frame 11, making it easy for the elderly and children to operate. The bracket 46 is hinged to the bottom of the seat cushion 44 via the folding bracket hinge 45. It can be freely folded up or folded flat against the bottom, achieving a 90° free fold. When unfolded, the bracket 46 is lowered to form a vertical auxiliary support, distributing the pressure on the bed surface. Together with the rollers 47, it forms multi-point support, greatly improving the load-bearing capacity and stability of the bed frame, making it less prone to deformation and collapse over long-term use. When folded up, the bracket 46 is folded upwards and pressed against the base, completely hidden and not exposed, not taking up storage space. The overall appearance is simple and beautiful, and the structural design is reasonable and practical.

[0039] Sofa component 1 includes a seat frame 11, armrests 12, seat cushion one 13, seat cushion two 14, and seat cushion three 15. Specifically, two sets of armrests 12 are fixedly installed on both sides of the seat frame 11, using a reinforced frame structure with strong load-bearing capacity; seat cushion one 13 is laid on the front end of the seat frame 11, and seat cushion two 14 and the seat frame 11 are connected by a two-way self-locking hinge. In table mode, seat cushion two 14 can be flipped up and down via the two-way self-locking hinge as needed, allowing for multiple angle adjustments. It is suitable for different scenarios such as watching TV, reading, and taking a nap; the seat cushion 13 and seat cushion 35 are connected by sewing with flexible fabric to form an integrated flexible connection structure. In the sofa mode and table mode, the seat cushion 13 and seat cushion 35 are stacked and move synchronously when stretched and flipped to avoid the seat cushions separating and misaligning; the bottom of the seat frame 11 is provided with a receiving groove that is compatible with the bed frame mechanism 4. The bed frame mechanism 4 can be slidably stored in the receiving groove. After storage, the sofa is neat and there are no protruding parts.

[0040] The tabletop assembly 2 includes table legs 21, a tabletop 22, a backrest 23, and table feet 24. Specifically, the upper ends of the two sets of table legs 21 are fixedly connected to the tabletop 22, ensuring a firm and secure connection. The lower ends of the table legs 21 are provided with table feet 24, made of non-slip silicone material to protect the floor and prevent slipping. The backrest 23 is fixedly installed on the back of the tabletop 22 and is filled with high-elastic sponge for a soft and comfortable backrest. The two sets of table legs 21 of the tabletop assembly 2 are rotatably connected to the two sets of armrests 12 of the sofa assembly 1 via two sets of hinges 3, allowing for smooth switching without any jamming. The two sets of table legs 21 have an L-shaped structure. In table mode, the two sets of table legs 21 and the two sets of armrests 12 are separated, with the two sets of table legs 21 providing support. In sofa mode and bed mode, the two sets of table legs 21 and the two sets of armrests 12 are stacked for storage, making the structure more compact.

[0041] The linkage assembly 42 includes a first fixed plate 421, a second fixed plate 422, a first connecting rod 423, a second connecting rod 424, a third connecting rod 425, a fourth connecting rod 426, and a positioning post 427. Specifically, the first fixed plate 421 is fixedly connected to the bottom of the seat cushion 43, and the second fixed plate 422 is fixedly connected to the inner wall of the base 41. Both ends of the first connecting rod 423 are hinged to one end of the first fixed plate 421 and the second fixed plate 422, respectively. Both ends of the second connecting rod 424 are hinged to the first fixed plate 421 and the third connecting rod 425, respectively. The free end of the third connecting rod 425 is hinged to the second fixed plate 422, and both ends of the fourth connecting rod 426 are hinged to the second fixed plate 422 and the second connecting rod 424, forming a four-link linkage telescopic structure with uniform transmission and smooth telescopic movement. The positioning post 427 is set on the fixed plate 423. On the fixed plate 422, the rotational stroke of the connecting rod assembly 42 is limited to prevent excessive stretching and structural damage. The positioning post 427 is located in the middle of the fixed plate 422. The connecting rod 425 is provided with a limiting groove that matches the positioning post 427. When the connecting rod assembly 42 extends to its maximum stroke, the positioning post 427 is embedded in the limiting groove to achieve rigid positioning, providing stable support and preventing rebound and loosening. The connecting rod assembly 42 adopts a four-bar combined telescopic structure. With the precise limiting design of the positioning post 427 and the limiting groove, the hinges between the connecting rods are tightly connected with small gaps, resulting in uniform and stable transmission. This allows for precise control of the bed frame's extension stroke, preventing excessive stretching or accidental retraction, effectively improving the stability of the extension process, the safety of use, and the overall structural strength, and extending the product's service life.

[0042] The connecting fabric between cushion 1 (13) and cushion 3 (15), and between cushion 4 (43) and cushion 5 (44) is made of wear-resistant fabric. The fabric is thick and tough, and can adapt to deformation as the cushion is bent and stretched. It is not easy to tear, wrinkle, or deform after repeated use. During the stretching, structural folding, and shape adjustment of the bed frame, the fabric structure can adapt to bending and stretching deformation, effectively avoiding the problems of displacement, separation, misalignment, curling edges, and excessive gaps in the splicing of the separate cushions. This ensures the overall flatness and continuity of the seat and bed surface, greatly improving the comfort and appearance.

[0043] When the tabletop assembly 2 rotates around the hinge 3 to a horizontal position, it forms a wide and flat table shape with a strong load-bearing capacity, which can be used for office work, study, dining, and placing items. When the tabletop assembly 2 rotates around the hinge 3 to a vertical position, the two sets of table legs 21 and the two sets of armrests 12 are stacked, and the backrest 23 faces the seat frame 11, forming a sofa-shaped backrest that conforms to the human back, providing good support and comfortable leaning, meeting the needs of daily sofa use.

[0044] This multifunctional bed-table-sofa, in actual use,

[0045] Sofa mode: The bed frame mechanism 4 is stored in the receiving groove at the bottom of the seat frame 11; the table board assembly 2 is flipped to a vertical position, and the back cushion 23 faces inward to form a sofa back; the seat cushion 2 14 can be adjusted to a horizontal position through a two-way self-locking hinge, so that the back cushion 23 falls on the seat cushion 2 14, thereby meeting different leaning needs such as watching TV, reading, and resting, taking up little space and being comfortable to use.

[0046] Table mode: Flip the tabletop assembly 2 downwards around the hinge 3 to a horizontal position, and the table legs 21 and table feet 24 will support the ground, forming a stable and flat desktop. No additional installation is required, and it can be switched with one click. It can be used for computer office work, writing and studying, dining and placing items, etc., to meet the needs of multi-functional use. The seat cushion 2 14 can be adjusted in angle through a two-way self-locking hinge, and can be adjusted in multiple angles according to the comfort level, thereby meeting various needs and increasing comfort.

[0047] Bed frame mode: Pull the handle on the side cushion 48 forward, and the bed frame mechanism 4 will slide out smoothly under the action of the roller 47. Pull the seat cushion 43 and seat cushion 44 to make the connecting rod assembly 42 unfold smoothly, and the positioning post 427 will be engaged into the limiting groove to achieve precise positioning. Flip the seat cushion 44 to a horizontal position and fold the bracket 46 down to make it vertically support the ground. The seat cushion 43 and seat cushion 44 are spliced ​​with the sofa cushion structure to form a complete bed surface, which can comfortably lie down and sleep, with stable support and high safety.

[0048] When storing, fold up cushion 43 and cushion 44, fold the bracket 46 upwards, then apply force to tilt the front of the fixing plate 421 downwards, causing the connection points of connecting rod 2 424 and connecting rod 3 425 to descend together. At the same time, connecting rod 426 will rotate until the connection point of connecting rod 426 and connecting rod 2 424 descends to below the lower fixing plate 2 422, thus completing the folding of the connecting rod assembly 42. Push the base 41 backwards into the receiving slot to restore the sofa to its original state. The switching is quick, the operation is simple, and the storage is neat.

[0049] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

[0050] The terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity of description and are not intended to limit the scope of the invention. Any changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

Claims

1. A multifunctional bed-table-sofa, characterized in that, include: Sofa assembly (1), tabletop assembly (2), hinges (3) and bed frame mechanism (4). The two ends of the sofa assembly (1) and tabletop assembly (2) are connected by two hinges (3) to form a flip support structure that can switch between a horizontal tabletop state and a vertical backrest state. The bed frame mechanism (4) is slidably disposed at the front end of the sofa assembly (1) and can be stored and hidden or extended outward to form a bed extension. The bed frame mechanism (4) includes a base (41), a linkage assembly (42), a seat cushion four (43), a seat cushion five (44), a folding bracket hinge (45), a bracket (46), a roller (47), and a side pad (48). The base (41) is slidably installed on the front side of the seat frame (11). The seat cushion four (43) is located above the base (41). The two ends of the base (41) and the seat cushion four (43) are connected together by two sets of linkage assemblies (42). The seat cushion four (43) and the seat cushion five (44) are connected by sewing flexible fabric. The bracket (46) is hinged to the bottom of the seat cushion five (44) through the folding bracket hinge (45) and can be freely folded open or stored.

2. The multifunctional bed-table-sofa according to claim 1, characterized in that, The sofa assembly (1) includes a seat frame (11), armrests (12), seat cushion one (13), seat cushion two (14) and seat cushion three (15). The two sets of armrests (12) are fixedly installed on both sides of the seat frame (11). The seat cushion one (13) is laid on the front end of the seat frame (11). The seat cushion two (14) and the seat frame (11) are connected by a two-way self-locking hinge. The seat cushion one (13) and the seat cushion three (15) are connected by sewing flexible fabric to form an integrated flexible connection structure, which ensures position linkage during flipping and stretching adjustment and avoids seat cushion separation and misalignment.

3. A multifunctional bed-table-sofa according to claim 1, characterized in that, The tabletop assembly (2) includes table legs (21), tabletop (22), cushion (23) and table feet (24). The upper ends of the two sets of table legs (21) are fixedly connected to the tabletop (22), and the lower ends of the table legs (21) are provided with table feet (24). The cushion (23) is fixedly installed on the back side of the tabletop (22). The tabletop assembly (2) is rotatably connected to the armrest (12) of the sofa assembly (1) through a hinge (3).

4. A multifunctional bed-table-sofa according to claim 1, characterized in that, The top of the seat cushion four (43) is provided with a stepped groove, and the stepped groove is adapted to the size of the seat cushion three (15). The side pad (48) is fixedly installed on the front side of the base (41). The bottom of the base (41) is provided with multiple sets of rollers (47) to enable the base (41) to slide within the seat frame (11).

5. A multifunctional bed-table-sofa according to claim 1, characterized in that, The linkage assembly (42) includes a first fixing plate (421), a second fixing plate (422), a first connecting rod (423), a second connecting rod (424), a third connecting rod (425), a fourth connecting rod (426), and a positioning post (427). The first fixing plate (421) is fixedly connected to the bottom of the fourth cushion (43), the second fixing plate (422) is fixedly connected to the inner wall of the base (41), and the two ends of the first connecting rod (423) are respectively connected to the first fixing plate (421). The two ends of the connecting rod 2 (424) are hinged to the fixed plate 1 (421) and the connecting rod 3 (425) respectively. The free end of the connecting rod 3 (425) is hinged to the fixed plate 2 (422). The two ends of the connecting rod 4 (426) are hinged to the fixed plate 2 (422) and the connecting rod 2 (424) respectively. The positioning post (427) is set on the fixed plate 2 (422) to limit the rotation stroke of the connecting rod assembly (42).

6. A multifunctional bed-table-sofa according to claim 2, characterized in that, The bottom of the frame (11) is provided with a receiving groove that is adapted to the base (41), and the base (41) can be slidably stored in the receiving groove.

7. A multifunctional bed-table-sofa according to claim 2, characterized in that, The front end of the armrest (12) is provided with a stepped groove, one end of the hinge (3) is fixedly connected to the stepped groove, and the other end of the hinge (3) is fixedly connected to the side wall of the table leg (21).

8. A multifunctional bed-table-sofa according to claim 5, characterized in that, The positioning post (427) is located in the middle of the fixing plate 2 (422). The connecting rod 3 (425) is provided with a limiting groove that is adapted to the positioning post (427). When the connecting rod assembly (42) extends to the maximum stroke, the positioning post (427) is embedded in the limiting groove to achieve positioning.

9. A multifunctional bed-table-sofa according to claim 2, characterized in that, The connecting fabric between cushion one (13) and cushion three (15), cushion four (43) and cushion five (44) is a wear-resistant fabric that can adapt to deformation as the cushion is bent and stretched.

10. A multifunctional bed-table-sofa according to claim 1, characterized in that, When the table panel assembly (2) rotates around the hinge (3) to a horizontal state, the table panel (22) is flush with the upper surface of the armrest (12) to form a table shape. When the table panel assembly (2) rotates around the hinge (3) to a vertical state, the backrest (23) faces the inside of the seat frame (11) to form a sofa-shaped backrest.

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