Integrated foldable light sofa bed

By designing an integrated, foldable, lightweight sofa bed, and employing a U-shaped sofa frame and damping tubes, the problem of complex operation of existing sofa beds has been solved. This enables a single person to quickly convert between a sofa and a bed, improving ease of use and structural stability.

CN223627207UActive Publication Date: 2025-12-05ZHEJIANG KUKA MERLIN FURNITURE CO LTD
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Patent Information

Application Number
CN202520119580.X
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-01-17
Publication Date
2025-12-05
Estimated Expiration
2035-01-17

AI Technical Summary

Technical Problem

Existing sofa beds are complicated to operate and require multiple people to operate, making them inconvenient to use.

Method used

An integrated, foldable, lightweight sofa bed was designed, featuring a U-shaped sofa frame, damping tubes, damping shafts, and brake casters. It allows for easy conversion between sofa and bed, and the operation process is simplified by utilizing the combination of damping sleeves and rotating grooves.

Benefits of technology

It enables a single person to quickly convert between a sofa and a bed, improving ease of use, structural stability, and storage space utilization efficiency.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN223627207U_ABST
    Figure CN223627207U_ABST
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Abstract

The utility model relates to the technical field of sofa beds, in particular to an integrated foldable light sofa bed which comprises a U-shaped sofa frame, a backup plate is connected to the top of the U-shaped sofa frame, a supporting shaft is connected to the inner wall of the U-shaped sofa frame, a damping pipe is arranged outside the supporting shaft in a sleeved mode, and a first frame is connected to the outside of the damping pipe. First rotating grooves are formed in the two ends of one side of the first frame correspondingly, first damping shafts are connected to the inner walls of the first rotating grooves, and the first damping shafts are sleeved with first damping sleeves. By removing the braking function of the braking universal wheels, the storage box is pushed leftwards, the opposite positions of the first frame and the second frame are tilted under the action of force, the first frame drives the damping pipe to rotate outside the supporting shaft, and meanwhile the second damping sleeve rotates outside the second damping shaft; when the third frame moves into the U-shaped sofa frame to serve as the first frame, the left side of the first frame leans against the backup plate.
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Description

TECHNICAL FIELD

[0001] The utility model relates to sofa bed technical field, concretely is integrative foldable lightweight sofa bed. BACKGROUND

[0002] Sofa bed refers to the furniture of sofa and bed two uses. Modern room layout advocates simplicity, and multifunctional furniture becomes the choice of the public more and more, and sofa bed is one of them.

[0003] In small household room, in order to meet the occasional visitor's living needs, sofa bed is indispensable, and the operation steps of the existing sofa bed are too complex when using, and often need multiple people to cooperate, can complete the unfolding and folding of sofa bed, and bring great inconvenience to the use of sofa bed. Therefore, in order to solve such problems, we propose integrative foldable lightweight sofa bed. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the shortcomings in the prior art and provides integrative foldable lightweight sofa bed.

[0005] In order to achieve the above object, the utility model adopts the following technical scheme:

[0006] Integrative foldable lightweight sofa bed, including U type sofa frame, the top of U type sofa frame is connected with backrest, and the inner wall of U type sofa frame is connected with support shaft, the outside of support shaft is equipped with damper pipe, the outside of damper pipe is connected with first frame, and the both ends of first frame one side are all provided with rotating groove no.

[0007] Preferably, the four corners of the bottom of the U-shaped sofa frame are connected with the adjusting screw, the bottom of the adjusting screw is threadedly sleeved with the adjusting nut, and the bottom of the adjusting nut is connected with the placing disc.

[0008] Preferably, the both ends of the inner walls of the first frame, the second frame and the third frame are provided with placing grooves, the bottoms of the inner walls of the placing grooves are provided with a plurality of positioning screw holes, the inside of the placing groove is placed with the bed plate no.

[0009] Preferably, the bottom of the third frame is provided with a plurality of positioning slots, and the positioning slots are inserted with positioning blocks.

[0010] Preferably, the top of the first frame, the second frame and the third frame is placed with a sofa cushion, and the two ends of the top of the first frame, the second frame and the third frame are embedded with magic tape pieces one, and the two ends of the bottom of the sofa cushion are sewn with magic tape pieces two used in cooperation with the magic tape pieces one.

[0011] Preferably, the two ends of the inner wall of the U-shaped sofa frame are connected with support strips used in cooperation with the first frame.

[0012] Preferably, the two ends of the bottom of the third frame are connected with reinforcing inclined braces, and the side, away from the third frame, of the reinforcing inclined brace is connected with the storage box.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] The utility model discloses a U-shaped sofa frame, a first frame, a second frame, a rotating groove two, a third frame, a damping pipe, a support shaft, a rotating groove one, a damping shaft one, a damping sleeve one, a damping shaft two, a damping sleeve two and brake universal wheel cooperate, remove the brake function of brake universal wheel, push the storage box to left, the opposite place of first frame and second frame is warped under the action of force, and first frame drives damping pipe to rotate outside support shaft, and simultaneously damping sleeve two rotates outside damping shaft two, when third frame moves to inside U-shaped sofa frame and serves as first frame, the left side of first frame leans on backrest at this time, and the back cushion of sofa is used to first frame and second frame and the sofa cushion on it, and the seat cushion of sofa is used to third frame and the sofa cushion on it. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is structure schematic diagram of the utility model;

[0016] Figure 2 It is partial structure exploded view of the utility model; Figure 1

[0017] Figure 3 It is bottom view of the utility model; Figure 2

[0018] Figure 4 It is second frame and sofa cushion structure exploded view of the utility model;

[0019] Figure 5 It is third frame, sofa cushion and storage box structure exploded view of the utility model;

[0020] Figure 6 It is structure schematic diagram of the utility model; Figure 5 ​​Top view.

[0021] In the diagram: 1. Backrest; 2. Sofa cushion; 3. U-shaped sofa frame; 4. Placement tray; 5. First frame; 6. Second frame; 7. Rotating groove two; 8. Third frame; 9. Storage box; 10. Damping tube; 11. Support shaft; 12. Velcro patch one; 13. Rotating groove one; 14. Positioning bolt; 15. Bed board one; 16. Damping shaft one; 17. Placement groove; 18. Positioning screw hole; 19. Support strip; 20. Velcro patch two; 21. Damping sleeve one; 22. Damping shaft two; 23. Damping sleeve two; 24. Reinforcing diagonal brace; 25. Fastening groove; 26. Bed board two; 27. Positioning slot; 28. Positioning insert; 29. ​​Brake caster wheel; 30. Divider plate; 31. Moving block; 32. Moving groove. 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.

[0023] Please see Figures 1-6 An integrated foldable lightweight sofa bed includes a U-shaped sofa frame 3, a backrest 1 connected to the top of the U-shaped sofa frame 3, a support shaft 11 connected to the inner wall of the U-shaped sofa frame 3, a damping tube 10 sleeved on the outside of the support shaft 11, a first frame 5 connected to the outside of the damping tube 10, a rotating groove 13 opened at both ends on one side of the first frame 5, a damping shaft 16 connected to the inner wall of the rotating groove 13, a damping sleeve 21 sleeved on the outside of the damping shaft 16, and a second frame 6 connected to one side of the two damping sleeves 21. Both ends are provided with rotating grooves 7. The inner wall of rotating groove 7 is connected to damping shaft 22. Damping sleeve 23 is sleeved on the outside of damping shaft 22. One side of the two damping sleeves 23 is connected to a third frame 8. One side of the third frame 8 is provided with a buckle groove 25. One side of the bottom of the third frame 8 is connected to a storage box 9. The four corners of the bottom of the storage box 9 are connected to brake casters 29. The bottom of the inner wall of the storage box 9 is provided with a moving groove 32. The inner wall of the moving groove 32 is slidably provided with a moving block 31. The top of the moving block 31 is connected to a partition plate 30.

[0024] As a technical optimization of this utility model, each of the four corners of the bottom of the U-shaped sofa frame 3 is connected to an adjusting screw, and an adjusting sleeve is fitted on the bottom thread of the adjusting screw. The bottom of the adjusting sleeve is connected to a placement plate 4. By cooperating with the adjusting screw and the adjusting sleeve, the height of the placement plate 4 can be adjusted, making it convenient to place the sofa bed on uneven ground.

[0025] As a technical optimization scheme of the utility model, the two ends of the inner wall of the first frame 5, the second frame 6 and the third frame 8 are provided with placing grooves 17, the bottom of the inner wall of the placing groove 17 is provided with a plurality of positioning screw holes 18, the inside of the placing groove 17 is placed with a bed plate one 15, the two sides of the top of the bed plate one 15 are provided with positioning bolts 14, the bottom of the positioning bolt 14 extends to the inside of the positioning screw hole 18.

[0026] As a technical optimization scheme of the utility model, the bottom of the inner wall of the placing groove 17 on the third frame 8 is also provided with a plurality of positioning slots 27, the inside of the positioning slot 27 is inserted with a positioning plug 28, the top of the two positioning plugs 28 is commonly connected with a bed plate two 26, through the cooperation of the positioning slot 27 and the positioning plug 28, the bed plate two 26 is conveniently taken out from the placing groove 17, so that the clothes placed in the storage box 9 are taken.

[0027] As a technical optimization scheme of the utility model, the top of the first frame 5, the second frame 6 and the third frame 8 is placed with a sofa cushion 2, the two ends of the top of the first frame 5, the second frame 6 and the third frame 8 are inlaid with a magic tape piece one 12, the two ends of the bottom of the sofa cushion 2 are sewn with a magic tape piece two 20 used in cooperation with the magic tape piece one 12, through the cooperation of the magic tape piece one 12 and the magic tape piece two 20, the sofa cushion 2 is conveniently placed on the first frame 5, the second frame 6 and the third frame 8.

[0028] As a technical optimization scheme of the utility model, the two ends of the inner wall of the U-shaped sofa frame 3 are connected with a supporting strip plate 19 used in cooperation with the first frame 5, through the supporting strip plate 19, the first frame 5 is supported, and the strength of the first frame 5 is improved.

[0029] As a technical optimization scheme of the utility model, the two ends of the bottom of the third frame 8 are connected with a reinforcing inclined strut 24, the side away from the third frame 8 of the reinforcing inclined strut 24 is connected with the storage box 9, through the reinforcing inclined strut 24, the third frame 8 is supported, and the strength of the third frame 8 is improved.

[0030] The utility model discloses when using, the sofa bed needs to fold when the sofa uses, remove the brake function ( the brake function of left two brake universal wheels 29 is from not using state) of brake universal wheel 29, push the storage box 9 to the left, the first frame 5 and the second frame 6 are relative and are buckled under the action of force, the first frame 5 drives damping pipe 10 to rotate outside support shaft 11, and damping sleeve no. 2 23 rotates outside damping shaft no. 2 22, when third frame 8 moves to U type sofa frame 3 inside and acts as the first frame 5, the left side of first frame 5 leans on backrest 1, and the first frame 5 and the second frame 6 and the sofa cushion 2 on it are used as the back cushion of sofa, the third frame 8 and the sofa cushion 2 on it are used as the seat cushion of sofa, and the support strip board 19 is used to support third frame 8, improve its strength, and finally reset the brake function of right two brake universal wheels 29. Further utilize the storage box 9, can store clothes, by moving the position of partition plate 30, can divide the storage box 9 into different size storage space, is favorable to the storage of different size clothes and different type clothes, is favorable to the subsequent taking.

[0031] The above is only the preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art in the technical range disclosed by the utility model, according to the technical scheme of the utility model and the utility model concept, carries out equivalent replacement or change, should be covered in the protection scope of the utility model.

Claims

1. An integrated foldable lightweight sofa bed comprising a U-shaped sofa frame (3), characterized in that: The top of the U-shaped sofa frame (3) is connected with a backrest (1), the inner wall of the U-shaped sofa frame (3) is connected with a supporting shaft (11), the outer part of the supporting shaft (11) is sleeved with a damping pipe (10), the outer part of the damping pipe (10) is connected with a first frame (5), both ends of one side of the first frame (5) are provided with rotating grooves (13), the inner wall of the rotating grooves (13) is connected with damping shafts (16), the outer part of the damping shafts (16) is sleeved with damping sleeves (21), one side of the two damping sleeves (21) is connected with a second frame (6), both ends of one side of the second frame (6) are provided with rotating grooves (7), the inner wall of the rotating grooves (7) is connected with damping shafts (22), the outer part of the damping shafts (22) is sleeved with damping sleeves (23), one side of the two damping sleeves (23) is connected with a third frame (8).

2. The one-piece foldable lightweight sofa-bed according to claim 1, characterized in that: The side of the third frame (8) is provided with a buckling groove (25), one side of the bottom of the third frame (8) is connected with a storage box (9), the four corners of the bottom of the storage box (9) are connected with brake universal wheels (29), the inner wall of the bottom of the storage box (9) is provided with a moving groove (32), the inner wall of the moving groove (32) is slidably provided with a moving block (31), the top of the moving block (31) is connected with a partition plate (30).

3. The one-piece foldable lightweight sofa-bed according to claim 2, characterized in that: The four corners of the bottom of the U-shaped sofa frame (3) are connected with adjusting screws, the bottom of the outer part of the adjusting screws is threadedly sleeved with adjusting screw sleeves, and the bottom of the adjusting screw sleeves is connected with a placing disc (4).

4. The one-piece foldable lightweight sofa-bed according to claim 2, characterized in that: The inner wall of both ends of the first frame (5), the second frame (6) and the third frame (8) is provided with a placing groove (17), the bottom of the inner wall of the placing groove (17) is provided with a plurality of positioning screw holes (18), the inside of the placing groove (17) is placed with a bed plate (15), the two sides of the top of the bed plate (15) are provided with positioning bolts (14), and the bottom of the positioning bolts (14) extends into the inside of the positioning screw holes (18).

5. The one-piece foldable lightweight sofa-bed according to claim 4, characterized in that: The bottom of the inner wall of the placing groove (17) on the third frame (8) is also provided with a plurality of positioning insertion grooves (27), the inside of the positioning insertion grooves (27) is inserted with positioning insertion blocks (28), and the top of the two positioning insertion blocks (28) is connected with a bed plate (26).

6. The one-piece foldable lightweight sofa-bed according to claim 2, characterized in that: The top of the first frame (5), the second frame (6) and the third frame (8) is placed with a sofa cushion (2), the top of the first frame (5), the second frame (6) and the third frame (8) is inlaid with a magic tape piece (12), and the two ends of the bottom of the sofa cushion (2) are sewn with a magic tape piece (20) used in cooperation with the magic tape piece (12).

7. The one-piece foldable lightweight sofa-bed according to claim 2, characterized in that: The two ends of the inner wall of the U-shaped sofa frame (3) are connected with supporting strip plates (19) used in cooperation with the first frame (5).

8. The one-piece foldable lightweight sofa-bed according to claim 2, characterized in that: The two ends of the bottom of the third frame (8) are connected with reinforcing diagonal braces (24), and the side, away from the third frame (8), of the reinforcing diagonal braces (24) is connected with the storage box (9).