Disassembling and assembling structure of sofa bed

Abstract

The utility model relates to a disassembly and assembly structure of a sofa bed, and relates to the technical field of sofa beds, the disassembly and assembly structure comprises a connecting assembly, and the connecting assembly comprises a hinge plate rotatably connected with a backrest body and provided with a connecting hole and a mounting hole which are communicated with each other; the positioning column is arranged on the bottom frame and provided with a blocking piece, only the positioning column can pass through the connecting hole, the positioning column and the blocking piece can pass through the mounting hole, the positioning column abuts against the top of the connecting hole, and the blocking piece and the bottom frame abut against the hinged plate for positioning. During transportation, the positioning columns and the blocking pieces are moved from the connecting holes to the mounting holes, then the backrest body is taken down, the backrest body and the bottom frame are separated for transportation, and after transportation is completed, the positioning columns and the blocking pieces penetrate through the mounting holes, so that the positioning columns abut against the tops of the connecting holes, and meanwhile, the bottom frame and the blocking pieces abut against the hinged plates for positioning; the sofa bed is convenient to disassemble and assemble.

Description

Technical Field

[0001] The present application relates to the technical field of sofa beds, and in particular to a disassembly and assembly structure of a sofa bed. Background Art

[0002] Currently, sofa beds are a type of sofa that can be used as a sofa for sitting and can also be transformed into a bed through deformation for people to lie down and rest. Sofa beds designed in this way have multiple functions.

[0003] A sofa bed includes a bottom frame, a seat frame arranged on the bottom frame, and a backrest rotatably mounted on the bottom frame. The backrest is generally raised above the seat frame, so the sofa bed will take up a larger transportation space during packaging and transportation, which makes the transportation of the sofa bed require high material costs, especially in foreign trade. Therefore, sofa beds are now designed with backrests and bottom frames in a detachable form.

[0004] In the prior art, the backrest and the bottom frame are generally detachably installed by hinges and screws, but the disassembly and assembly are both troublesome, so there is an urgent need for a sofa bed that is easy to disassemble and assemble. Utility Model Content

[0005] In order to provide a sofa bed that is easy to assemble and disassemble, the present application provides a disassembly and assembly structure of a sofa bed.

[0006] The present application provides a disassembly and assembly structure of a sofa bed, which adopts the following technical solution:

[0007] A disassembly and assembly structure of a sofa bed, comprising a plurality of connection components for detachably connecting a backrest body to a bottom frame, wherein the connection components include:

[0008] A hinge plate, the hinge plate is rotatably connected to the backrest body and is provided with a connecting hole and a mounting hole that are interconnected;

[0009] The positioning column is arranged on the bottom frame and is provided with a blocking member protruding from the positioning column. The connecting hole is only for the positioning column to pass through, while the mounting hole is for the positioning column and the blocking member to pass through, so that the positioning column abuts against the top of the connecting hole under the weight of the backrest body, and the blocking member and the bottom frame abut against the opposite side walls of the hinge plate for positioning.

[0010] By adopting the above technical solution, when transportation is required, the backrest body is moved to drive the hinge plate to move up, so that the positioning column and the blocking member are moved from the connecting hole to the mounting hole, and then the positioning column and the blocking member can be passed through the mounting hole to remove the backrest body, and then the backrest body and the bottom frame are separated for transportation. After the transportation is completed, the positioning column and the blocking member are passed through the mounting hole, so that the hinge plate abuts against the bottom frame, and then the backrest body is moved down to drive the connecting hole to move down close to the positioning column, so that the positioning column is plugged and installed on the connecting hole, and the bottom frame and the blocking member are respectively abutted against the opposite side walls of the hinge plate for positioning, until the positioning column is pressed against the top of the connecting hole under the weight of the backrest body for positioning, thereby facilitating disassembly and assembly, thereby providing a sofa bed that is easy to disassemble and assemble.

[0011] Optionally, a positioning component for positioning the hinged plate is provided on the bottom frame, and the positioning component includes:

[0012] A positioning screw, which is movably arranged on the bottom frame and is plugged and matched with the hinge plate for positioning;

[0013] The screwing part is arranged on the positioning screw and is used to provide force when driving the positioning screw to move.

[0014] By adopting the above technical solution, the positioning screw is movably arranged on the bottom frame and is plugged and installed on the hinge plate for positioning, thereby preventing the hinge plate from moving up.

[0015] Optionally, the blocking member and the positioning column are both cylindrical structures, and the mounting hole is a circular hole.

[0016] By adopting the above technical solution, the circular structure can be more easily aligned than other structures, thereby improving the convenience of the positioning column and the blocking member passing through the installation hole, thereby facilitating disassembly and assembly.

[0017] Optionally, the blocking member is provided with a guide angle for facilitating passage through the mounting hole.

[0018] Optionally, a support plate and a mounting plate are detachably mounted on the backrest body and the bottom frame, respectively. The support plate is rotatably connected to the hinge plate and rests against the hinge plate for positioning. The positioning column is arranged on the mounting plate.

[0019] By adopting the above technical solution, the positioning column is fixedly installed on the mounting plate, so that it can be replaced when the positioning column is damaged. At the same time, when the support plate and the hinged plate need to be replaced, the support plate can be removed and replaced, thereby improving the positioning effect and the convenience of disassembly and assembly, and providing a sofa bed that is easy to disassemble and assemble.

[0020] Optionally, after passing through the hinged plate, the positioning screw can also be threadedly connected to the support plate for positioning.

[0021] By adopting the above technical solution, the rotating positioning screw can be threadedly connected to the support plate, so that the backrest body is more stable during use, the comfort during use is improved, and a comfortable sofa bed is provided.

[0022] Optionally, the hinge plate is in a vertical state when connected to the mounting plate, and the support plate is positioned against the hinge plate after rotation, so that the support plate and the backrest body are in an inclined state and the bottom of both are inclined toward one side of the bottom frame and are used to prevent the support plate and the backrest body from rotating.

[0023] By adopting the above technical solution, the mounting plate and the hinge plate are in a vertical state so that a vertical downward pressure can be formed between the hinge plate and the positioning column, and the support plate is positioned against the hinge plate and is in an inclined state, so that the bottom of the support plate generates two component forces under the action of gravity, thereby preventing the support plate from rotating, thereby improving the stability of the backrest body when in use, and the backrest is also in an inclined state, which can facilitate supporting the back of a person and is more in line with ergonomics, making the sofa bed more comfortable to use, thereby providing a comfortable sofa bed.

[0024] Optionally, the hinge plate is provided with a hinge groove, and the support plate is inserted and installed in the hinge groove and rests against the bottom of the hinge groove for positioning.

[0025] By adopting the above technical solution, the support plate and the hinge groove are positioned due to the friction force, thereby further improving the stability of the backrest body during use and providing a comfortable sofa bed.

[0026] Optionally, when the support plate abuts against the bottom of the hinge groove, the contact surface between the hinge groove and the support plate gradually becomes smaller from top to bottom.

[0027] By adopting the above technical solution, there is friction between the support plate and the hinge groove, which is easy to cause wear. After wear, the positioning effect of the support plate will be reduced, and the rotation point of the support plate is located at the top. Therefore, according to the action of torque, the force required for positioning the support plate from top to bottom becomes smaller and smaller. Therefore, the contact surface between the hinge groove and the support plate is gradually reduced from top to bottom, so that the static friction force of the support plate gradually decreases after the support plate contacts the hinge groove, thereby achieving positioning while also reducing the probability of wear of the support plate, providing a comfortable sofa bed.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] During transportation, the positioning column and the blocking member are moved from the connecting hole to the mounting hole, and then the backrest body is removed, and the backrest body and the bottom frame are separated for transportation. After the transportation is completed, the positioning column and the blocking member are passed through the mounting hole so that the hinge plate abuts against the bottom frame, and the hinge plate is moved downward so that the positioning column is pressed against the top of the connecting hole under the weight of the backrest body, and at the same time, the bottom frame and the blocking member are respectively abutted against the opposite side walls of the hinge plate for positioning, so that it is easy to disassemble and assemble, and a sofa bed that is easy to disassemble and assemble is provided. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural diagram of the sofa bed and its disassembly and assembly structure;

[0031] Figure 2 It is a structural diagram of the disassembly structure;

[0032] Figure 3 It is a schematic diagram of the exploded structure of the disassembled structure.

[0033] Figure numerals: 1. bottom frame; 11. backrest body; 12. backrest iron frame; 13. backrest sponge; 14. mounting plate; 15. mounting surface; 2. connecting assembly; 21. hinge plate; 22. positioning column; 23. blocking member; 24. hinge groove; 25. connecting hole; 26. mounting hole; 27. guide angle; 3. support plate; 31. support groove; 4. positioning assembly; 41. positioning screw; 42. screwing part. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-3 This application is described in further detail.

[0035] The embodiment of the present application discloses a disassembly and assembly structure of a sofa bed.

[0036] Reference Figure 1 The disassembly and assembly structure of the sofa bed includes a plurality of connection components 2 for detachably connecting a backrest body 11 to a bottom frame 1. The backrest body 11 includes a backrest iron frame 12 and a backrest sponge 13 fixedly mounted on the backrest iron frame 12 by a covering layer. The backrest iron frame 12 is a rectangular parallelepiped frame structure, and the length direction of the backrest iron frame 12 is horizontal. A plurality of connection components 2 are arranged at intervals along the length direction of the backrest iron frame 12.

[0037] Reference Figure 1 and Figure 2A support plate 3 is fixedly installed on one end of the backrest iron frame 12 close to the bottom frame 1 by screws, and a plurality of support plates 3 are provided and are arranged one-to-one with a plurality of connecting components 2. The support plate 3 is formed by bending a metal plate and a support groove 31 is formed after bending, and the length direction of the support plate 3 and the support groove 31 is perpendicular to the length direction of the backrest iron frame 12; a mounting plate 14 in a vertical state is fixedly installed on the side wall of the bottom frame 1, and a plurality of mounting plates 14 are also provided and are arranged one-to-one with a plurality of connecting components 2.

[0038] Reference Figure 2 and Figure 3 The connecting assembly 2 includes a hinge plate 21 and a positioning column 22. The length direction of the hinge plate 21 is parallel to the length direction of the support plate 3. The hinge plate 21 is formed by bending a metal plate and a hinge groove 24 is formed by bending. The length directions of the hinge groove 24 and the hinge plate 21 are parallel.

[0039] Reference Figure 1 and Figure 2 The hinge plate 21 and one end of the support plate 3 are rotatably connected through a rotating shaft, and the rotating shaft is in a horizontal state. When the hinge plate 21 abuts against the mounting plate 14, it is in a vertical state and the rotating shaft is located at the top of the hinge plate 21; a connecting hole 25 and a mounting hole 26 are provided on the hinge plate 21, and the connecting hole 25 is provided along the length direction of the hinge plate 21, and the mounting hole 26 is connected to one end of the connecting hole 25 and is circular, and the center of the mounting hole 26 is located on the axis of the connecting hole 25, and multiple mounting holes 26 and connecting holes 25 are arranged at intervals along the length direction of the hinge plate 21. When the hinge plate 21 is in a vertical state, the mounting hole 26 is located at the bottom of the connecting hole 25.

[0040] Reference Figure 1 and Figure 3 The positioning column 22 is fixedly mounted on the side wall of the mounting plate 14 away from the bottom frame 1, and the positioning column 22 is in a horizontal state. At the same time, the positioning column 22 is vertically spaced and arranged in a plurality of corresponding to the plurality of mounting holes 26; a blocking member 23 is fixedly mounted on one end of the positioning column 22 away from the mounting plate 14. The positioning column 22 and the blocking member 23 are both cylindrical structures and are coaxially arranged. At the same time, the diameter of the blocking member 23 is larger than the diameter of the positioning column 22, and arc-shaped guide angles 27 are provided at both ends of the blocking member 23.

[0041] The connecting hole 25 is only for the positioning column 22 to pass through, while the mounting hole 26 is for the positioning column 22 and the blocking member 23 to pass through. The top of the connecting hole 25 is arc-shaped and can fit and position with the positioning column 22. The guide angle 27 guides the blocking member 23 when it passes through the mounting hole 26, so that the blocking member 23 can be easily installed or removed through the mounting hole 26.

[0042] When the backrest body 11 is connected to the base frame 1, the hinge plate 21 is vertically pressed against the mounting plate 14, so that the positioning column 22 and the blocking member 23 pass through the mounting hole 26, and then the hinge plate 21 is moved downward, so that the positioning column 22 enters the connecting hole 25 and presses against the top of the connecting hole 25 for positioning under the action of gravity of the backrest body 11, while the blocking member 23 presses against the bottom of the hinge groove 24 and cooperates with the mounting plate 14 to position the hinge plate 21 in the horizontal direction.

[0043] Reference Figure 1 and Figure 3 The rotation of the backrest iron frame 12 drives the support plate 3 to be inserted and installed on the hinge groove 24, so that the support plate 3 is against the bottom of the hinge groove 24 for positioning. At this time, there is a static friction between the support plate 3 and the hinge groove 24, so as to position the hinge plate 21 and the backrest body 11. At the same time, the support plate 3 and the backrest body 11 are both in an inclined state, and the blocking member 23 extends into the support groove 31 for avoidance. The support plate 3 and the backrest body 11 have the same inclination direction and the bottoms of both are inclined toward the side close to the bottom frame 1, thereby preventing the support plate 3 and the backrest body 11 from rotating, making the backrest body 11 more stable when in use.

[0044] The side wall of the hinge plate 21 facing away from the mounting plate 14 forms an inclined mounting surface 15, and the distance between the top of the mounting surface 15 and the mounting plate 14 is greater than the distance between the bottom and the mounting plate 14, so that the contact area between the hinge groove 24 and the support plate 3 gradually decreases from top to bottom, and the friction force between the hinge groove 24 and the support plate 3 gradually decreases from top to bottom.

[0045] Reference Figure 1 and Figure 2 A positioning assembly 4 for positioning the hinge plate 21 is provided on the bottom frame 1. The positioning assembly 4 includes a positioning screw 41 and a twisting portion 42. The positioning screw 41 horizontally passes through the bottom frame 1 and is rotatably connected to the bottom frame 1. The positioning screw 41 can also be threadedly connected to the bottom frame 1. The positioning screw 41 is plugged and installed on the hinge plate 21 to position the hinge plate 21. The twisting portion 42 is coaxially fixed on the positioning screw 41 and is convenient for leveraging when rotating the positioning screw 41. At the same time, the positioning screw 41 can also extend into the support groove 31 for avoidance, and the positioning screw 41 can also be threadedly connected to the support plate 3 for positioning, thereby positioning the position of the backrest body 11.

[0046] The working principle of the embodiment of the present application is as follows:

[0047] The positioning screw 41 is screwed to disengage the support plate 3 and the hinge plate 21, and then the backrest body 11 is lifted upward to drive the hinge plate 21 to move upward, so that the positioning column 22 moves to the mounting hole 26, and then the backrest body 11 is moved so that the blocking member 23 passes through the mounting hole 26, and the backrest body 11 can be removed, and the backrest body 11 and the bottom frame 1 can be separated for transportation, and the backrest iron frame 12 and the backrest sponge 13 can also be transported separately. When it needs to be installed after transportation, the hinge plate 21 is pressed against the mounting plate 14, so that the blocking member 23 and the positioning column 22 pass through the mounting hole 26, and the backrest body 11 is removed. The movable hinge plate 21 moves downward, so that the positioning column 22 abuts against the top of the connecting hole 25 and the blocking member 23 abuts against the hinge plate 21 for positioning, the backrest body 11 is rotated so that the support plate 3 is inserted and abuts against the hinge groove 24 for positioning, and then the twisting part 42 is rotated so that the positioning screw 41 is inserted and installed on the hinge plate 21, and the positioning screw 41 is threadedly connected to the support plate 3 for positioning, so as to realize the connection between the backrest body 11 and the bottom frame 1, thereby improving the convenience during transportation and the comfort during use, and providing a sofa bed that is convenient for disassembly and assembly and comfortable.

[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A disassembly and assembly structure of a sofa bed, Features: It comprises a plurality of connection components (2) for detachably connecting a backrest body (11) to a bottom frame (1), wherein the connection components (2) comprise: A hinge plate (21), the hinge plate (21) being rotatably connected to the backrest body (11) and having a connecting hole (25) and a mounting hole (26) that are interconnected; A positioning column (22), the positioning column (22) being arranged on the bottom frame (1) and being provided with a blocking member (23) protruding from the positioning column (22), the connecting hole (25) being only for the positioning column (22) to pass through, and the mounting hole (26) being for the positioning column (22) and the blocking member (23) to pass through, so that the positioning column (22) abuts against the top of the connecting hole (25) under the action of gravity of the backrest body (11), and the blocking member (23) and the bottom frame (1) abut against opposite side walls of the hinge plate (21) for positioning.

2. The disassembly and assembly structure of a sofa bed according to claim 1, Features: The bottom frame (1) is provided with a positioning component (4) for positioning the hinged plate (21), and the positioning component (4) comprises: A positioning screw (41), wherein the positioning screw (41) is movably disposed on the bottom frame (1) and is plugged into and engaged with the hinge plate (21) for positioning; A screwing portion (42) is disposed on the positioning screw rod (41) and is used to provide leverage when driving the positioning screw rod (41) to move.

3. The disassembly and assembly structure of a sofa bed according to claim 1, Features: The blocking member (23) and the positioning column (22) are both cylindrical structures, and the mounting hole (26) is a circular hole.

4. The disassembly and assembly structure of a sofa bed according to claim 3, Features: The blocking member (23) is provided with a guide angle (27) for facilitating passage through the mounting hole (26).

5. The disassembly and assembly structure of a sofa bed according to claim 2, Features: A support plate (3) and a mounting plate (14) are detachably mounted on the backrest body (11) and the bottom frame (1), respectively; the support plate (3) is rotatably connected to the hinge plate (21) and rests against the hinge plate (21) for positioning; and the positioning column (22) is arranged on the mounting plate (14).

6. The disassembly and assembly structure of a sofa bed according to claim 5, Features: After passing through the hinged plate (21), the positioning screw (41) can be threadedly connected to the support plate (3) for positioning.

7. The disassembly and assembly structure of a sofa bed according to claim 5, Features: The hinge plate (21) is in a vertical state when connected to the mounting plate (14), and the support plate (3) is positioned against the hinge plate (21) after rotation, so that the support plate (3) and the backrest body (11) are in an inclined state and the bottoms of both are inclined toward one side of the bottom frame (1) and are used to prevent the support plate (3) and the backrest body (11) from rotating.

8. The disassembly and assembly structure of a sofa bed according to claim 5, Features: The hinge plate (21) is provided with a hinge groove (24), and the support plate (3) is inserted and installed in the hinge groove (24) and rests on the bottom of the hinge groove (24) for positioning.

9. The disassembly and assembly structure of a sofa bed according to claim 8, Features: When the support plate (3) abuts against the bottom of the hinge groove (24), the contact surface between the hinge groove (24) and the support plate (3) gradually becomes smaller from top to bottom.

Images