A folding storage extension kit for a sofa back

Abstract

The utility model relates to sofa back storage expansion technical field, especially sofa back folding type storage expansion accessory, sofa back folding type storage expansion accessory includes: bottom plate, the top front side of bottom plate is installed with sofa, and the sofa includes sofa main body and backrest, and the top rear side of bottom plate is installed with backrest board, and the rear side of sofa is fixedly connected with the front side of backrest board, and the left and right sides of backrest board are all set up with side storage chamber, and the inner wall of side storage chamber is provided with two side partitions, and the inner wall of the side of side storage chamber away from backrest board is hinged with closing door, and the rear side inside backrest board is set up with movable chamber, the sofa back folding type storage expansion accessory provided by the utility model greatly expands the storage carrying capacity of sofa back, avoids the mixture of articles, improves the convenience of taking, does not occupy the conventional use space of sofa, can keep the neat and beautiful appearance of sofa, guarantees the original rest function and visual harmony of sofa.

Description

Technical Field

[0001] This utility model relates to the field of sofa backrest storage expansion technology, and in particular to a folding storage expansion accessory for sofa backrests. Background Technology

[0002] The sofa backrest is a core functional component of a sofa, supporting the back and ensuring comfortable seating. It's not just a surface covering; it includes an internal load-bearing frame, elastic filling, and back panel, forming a complete structure crucial for the sofa's resting function. However, in small apartments or scenarios with high storage needs, conventional sofa backrests only provide support and cannot meet the need for convenient storage of frequently used items such as remote controls, books, and small blankets. Foldable storage extension accessories, without altering the overall shape of the backrest or occupying regular sofa space, combine support and storage functions through folding. This expands the sofa's storage capacity and allows the accessories to be folded away when not in use, maintaining the sofa's neat and aesthetically pleasing appearance, adapting to diverse home usage scenarios.

[0003] Currently, most sofa backrest storage extension accessories are usually installed on both sides of the sofa backrest, near the armrests. By pulling the hinged door, the internal storage space is exposed. When closed, it fits against the side of the backrest and does not affect the overall width of the backrest. However, the storage space is small and the location is relatively remote. When storing books and frequently used items, it is easy to run out of space due to too many books, reducing the storage capacity. Also, when retrieving items, it is time-consuming because of the mixed placement of items.

[0004] Therefore, it is necessary to provide a new folding storage extension accessory for sofa backrests to solve the above-mentioned technical problems. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a folding storage extension accessory for sofa backrests.

[0006] The folding storage extension accessory for a sofa backrest provided by this utility model includes: a base plate, a sofa mounted on the front top of the base plate, the sofa including a sofa body and a backrest, a backrest panel mounted on the rear top of the base plate, the rear of the sofa and the front of the backrest panel being fixedly connected, side storage chambers being provided on both the left and right sides of the backrest panel, two side partitions being provided on the inner wall of the side storage chamber, a hinged door being provided on the inner wall of the side storage chamber away from the backrest panel, a movable chamber being provided inside the rear side of the backrest panel, a storage cabinet being slidably connected to the inner wall of the top center of the backrest panel, an alignment plate being installed on the top of the storage cabinet, a storage component being installed on the front side of the storage cabinet, an inspection component being installed on the inner wall of the rear side of the backrest panel, guide grooves being symmetrically provided inside the movable chamber, sliding blocks being slidably connected to the inner wall of the guide grooves, threaded rods and guide rods being installed inside the two guide grooves respectively, and a drive component being installed inside the base plate.

[0007] Preferably, the storage component includes multiple storage compartments, which are arranged on the front side of the storage cabinet. The inner walls of the storage compartments are provided with storage partitions, and multiple label slots are provided in the center of the front side of the storage cabinet.

[0008] Preferably, the maintenance assembly includes a disassembly shell, the front inner wall of which fits into the rear inner wall of the back panel, and bolts are inserted into the inner walls at the four corners of the disassembly shell. The disassembly shell is fixed to the rear inner wall of the back panel by a plurality of said bolts.

[0009] Preferably, the drive assembly includes a transmission rod, the outer side of which is rotatably connected to the inner wall of the top of the base plate, a worm gear is fixedly connected to the outer bottom end of the transmission rod, a worm is rotatably connected to the inside of the base plate, and a servo motor is installed inside the base plate on one side of the worm.

[0010] Preferably, the outer side of the alignment plate contacts the inner top wall of the backing plate, and the outer side of the storage cabinet is slidably connected to the inner wall of the movable chamber.

[0011] Preferably, the top ends of the two adjacent sides of the sliding blocks are fixedly connected to the bottom end of the storage cabinet, the inner wall of one sliding block is threadedly connected to the threaded rod, and the inner wall of the other sliding block is slidably connected to the outside of the guide rod.

[0012] Preferably, the top end of the transmission rod is fixedly connected to the bottom end of the threaded rod, the worm gear and the worm are meshed, and the drive end of the servo motor is fixedly connected to one end of the worm.

[0013] Compared with related technologies, the folding storage extension accessory for sofa backrests provided by this utility model has the following advantages: This utility model is equipped with both a side storage chamber and a height-adjustable storage cabinet. The side storage chamber can hold small items such as remote controls and headphones, while the storage cabinet can provide a large storage space to accommodate larger items such as books and blankets. This greatly expands the storage capacity of the sofa back and is more suitable for small apartments or high storage needs.

[0014] In this utility model, the side storage chamber is equipped with a side partition to support items in layers. The storage cabinet is equipped with storage compartments, storage partitions and label slots, which can classify and store different types of items. At the same time, the label slots can be used to mark item information, avoid items from getting mixed up and improve the convenience of retrieval.

[0015] After storage, the top of the alignment panel is flush with the top of the back panel. When the door is closed, it fits perfectly against the side of the back panel. The overall structure is not significantly different from that of a regular sofa backrest. It does not occupy the regular use space of the sofa, and it can also maintain the clean and beautiful appearance of the sofa, thus ensuring the original rest function and visual harmony of the sofa.

[0016] The storage cabinet of this utility model is electrically lifted by a servo motor, which can complete the opening and closing of the storage space without manual force, making the operation more labor-saving and convenient. At the same time, it is equipped with maintenance components, which can quickly disassemble the shell to expose the internal structure by inserting a rod, reducing the difficulty of maintenance of components such as threaded rods and sliding blocks. Attached Figure Description

[0017] Figure 1 A structural schematic diagram of the folding storage extension accessory for a sofa backrest provided by this utility model; Figure 2 for Figure 1 The diagram shows the structure of the sofa. Figure 3 for Figure 1 The diagram shows the structure of the back panel; Figure 4 for Figure 1 The diagram shows the structure of the base plate. Figure 5 for Figure 4 Enlarged view of point A in the image; Figure 6 for Figure 4 Enlarged view of point B in the image.

[0018] Numbered in the diagram: 1. Base plate; 2. Sofa; 3. Backrest panel; 4. Side storage compartment; 5. Side partition; 6. Closed door; 7. Movable compartment; 8. Storage cabinet; 9. Alignment plate; 10. Storage compartment; 11. Storage partition; 12. Label slot; 13. Removable shell; 14. Bolt; 15. Guide groove; 16. Sliding block; 17. Threaded rod; 18. Guide rod; 19. Transmission rod; 20. Worm gear; 21. Worm; 22. Servo motor. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the present utility model and are not intended to limit the present utility model.

[0020] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0021] Please see Figures 1 to 3 A folding storage extension accessory for a sofa backrest includes: a base plate 1, which serves as the load-bearing foundation of the entire accessory; a sofa 2, comprising a sofa body and a backrest, which provides comfortable support for the user; and a backrest panel 3, which provides support for the back of the sofa 2, installed at the top rear of the base plate 1. The rear of the sofa 2 is fixedly connected to the front of the backrest panel 3. This connection method ensures more even force distribution when leaning against the sofa, enhancing stability during use. Side storage chambers 4 are provided on both the left and right sides of the back panel 3. The inner wall of the side storage chamber 4 is provided with two side partitions 5. The two side partitions 5 can divide the interior of the side storage chamber 4 into multiple independent spaces, which can prevent different items from being piled up and mixed. A closing door 6 is hinged to the inner wall of the side storage chamber 4 away from the back panel 3. The hinged connection makes the opening and closing of the closing door 6 smoother, and after closing, it can fit completely against the side of the back panel 3, which does not take up extra space and can also maintain the neat appearance of the side of the sofa back. The movable chamber 7 is located inside the rear side of the back panel 3. This chamber adopts a hidden design. A storage cabinet 8 is slidably connected to the inner wall of the top center of the back panel 3. The outside of the storage cabinet 8 is slidably connected to the inner wall of the movable chamber 7. This sliding connection ensures that the trajectory of the storage cabinet 8 is accurate during the lifting and lowering process, and there will be no deviation or jamming. An alignment plate 9 is installed on the top of the storage cabinet 8. The outside of the alignment plate 9 contacts the inner wall of the top of the back panel 3. When the storage cabinet 8 is stored in the movable chamber 7, the alignment plate 9 can be flush with the top of the back panel 3, so that the top surface of the sofa back is completely flat and visually indistinguishable from that of an ordinary sofa back. Storage components are installed on the front of the storage cabinet 8. The storage components include multiple storage compartments 10. The multiple storage compartments 10 are set on the front of the storage cabinet 8. The multiple storage compartments 10 can be used to classify and store different types of items. For example, books, blankets and other items can be placed in different storage compartments 10 to avoid items from getting mixed up. The inner wall of the storage compartment 10 is provided with storage partitions 11. The storage partitions 11 can further subdivide the individual storage compartment 10 into smaller independent spaces to meet the storage needs of small items and make full use of the space of the storage compartment 10. Multiple label slots 12 are set in the middle of the front of the storage cabinet 8. Each label slot 12 corresponds to a storage compartment 10. Users can place labels with item information in the label slots 12 so that they can quickly locate the item when they need it, without having to search through the storage compartments 10 one by one. The maintenance assembly is installed on the rear inner wall of the back panel 3. The maintenance assembly includes a disassembly shell 13. The front inner wall of the disassembly shell 13 fits into the rear inner wall of the back panel 3. This fitting design ensures the sealing between the disassembly shell 13 and the back panel 3, effectively preventing dust from entering the interior of the movable chamber 7. Bolts 14 are inserted into the inner walls at the four corners of the disassembly shell 13. The disassembly shell 13 is fixed to the rear inner wall of the back panel 3 by multiple bolts 14. The bolt insertion and fixing method is simple to operate and can complete the installation and removal of the disassembly shell 13 without complicated tools, which facilitates the subsequent inspection and maintenance of the internal components of the movable chamber 7.

[0022] See Figures 4 to 6 The guide groove 15 is symmetrically provided inside the movable chamber 7. The inner wall of the guide groove 15 is slidably connected to the sliding block 16. The symmetrically provided guide groove 15 can provide a symmetrical movement path for the sliding block 16. The threaded rod 17 and the guide rod 18 are respectively installed inside the two guide grooves 15. The top of the adjacent side of the two sliding blocks 16 is fixedly connected to the bottom of the storage cabinet 8. The inner wall of one sliding block 16 is threadedly connected to the threaded rod 17, and the inner wall of the other sliding block 16 is slidably connected to the outside of the guide rod 18. The threaded rod 17 can provide power to drive the sliding block 16 to move, while the guide rod 18 can limit the movement direction of the sliding block 16. The two work together to improve the stability of the movement of the sliding block 16. The drive assembly is installed inside the base plate 1. The drive assembly includes a transmission rod 19, the outside of which is rotatably connected to the inner wall of the top of the base plate 1. A worm gear 20 is fixedly connected to the outside of the bottom end of the transmission rod 19. A worm 21 is rotatably connected inside the base plate 1. A servo motor 22 is installed inside the base plate 1 on one side of the worm 21. The top end of the transmission rod 19 is fixedly connected to the bottom end of the threaded rod 17. The worm gear 20 and the worm 21 are meshed, which can ensure the accuracy of power transmission and also has a self-locking characteristic, which can realize the vertical conversion of power direction. The drive end of the servo motor 22 is fixedly connected to one end of the worm 21.

[0023] The working principle of the folding storage extension accessory for the sofa backrest provided by this utility model is as follows: When in the normal sofa state, the base plate 1 serves as the overall support foundation, the sofa 2 maintains its normal shape for resting, the back panel 3 serves as the backrest structure of the sofa 2, the closed doors 6 on its left and right sides are closed, completely sealing the side storage chamber 4, the storage cabinet 8 is stored inside the movable chamber 7 on the back of the back panel 3, the top of the alignment plate 9 is flush with the top of the back panel 3, so that the back panel 3 presents a complete backrest appearance, the disassembly shell 13 in the maintenance components is also fixed, sealing the rear area of ​​the back panel 3, the overall structure is not significantly different from that of a normal sofa backrest; When users need to store small items such as remote controls and headphones, they can directly operate the closing door 6 and open it away from the back panel 3. At this time, the side storage chamber 4 is fully exposed. Users can place items on the side partition 5 inside the side storage chamber 4. The side partition 5 will support the items in layers to prevent them from piling up and mixing. After the items are stored, the closing door 6 is rotated towards the back panel 3 until the closing door 6 is completely flush with the side of the back panel 3. Then the side storage chamber 4 can be closed again, restoring the neat appearance of the side of the back panel 3. When storing larger items such as books and blankets, the servo motor 22 in the drive assembly is activated. The servo motor 22 drives the worm gear 21 to rotate. During this rotation, the worm gear 21 drives the worm wheel 20 to rotate synchronously. The worm wheel 20 then drives the transmission rod 19 to rotate. The transmission rod 19 further drives the threaded rod 17 to rotate. Since one sliding block 16 engages with the threaded rod 17, and the other sliding block 16 engages with the guide rod 18 in the guide groove 15, the rotation of the threaded rod 17 drives the corresponding sliding block 16 to slide upwards within the guide groove 15. The other sliding block 16 also slides upwards synchronously along the guide rod 18. As the two sliding blocks 16 slide upwards, the storage cabinet 8 slides upwards within the movable chamber 7. Storage cabinet 8 gradually extends from the movable chamber 7, and alignment plate 9 moves upward synchronously with storage cabinet 8 until it reaches the appropriate height. Then, servo motor 22 is turned off, and storage cabinet 8 remains in the extended state. When storage cabinet 8 is extended, the user can use the storage components on its front. Multiple storage compartments 10 within these components provide categorized storage space. Users can place different types of items into their corresponding compartments 10. Storage dividers 11 within each compartment 10 further separate the space, making the items more organized. Users can also place labels for the corresponding items in the label slots 12 next to the compartments 10 for easy retrieval later. After storing the items, the storage cabinet 8 can be retracted back into the movable chamber 7 following the storage cabinet's folding procedure. If storage cabinet 8 needs to be stored, the servo motor 22 is started in reverse. The servo motor 22 drives the worm gear 21 to rotate in reverse, which in turn drives the worm wheel 20, transmission rod 19, and threaded rod 17 to rotate in reverse. The reverse rotation of the threaded rod 17 will drive the sliding block 16 to slide downward in the guide groove 15. Another sliding block 16 also slides down synchronously along the guide rod 18, eventually driving the storage cabinet 8 to slide back into the movable chamber 7, and the top of the alignment plate 9 is once again flush with the top of the back plate 3.

[0024] When the device malfunctions and requires maintenance, operate the bolt 14 in the maintenance assembly and pull the bolt 14 out from the insertion position between the disassembly shell 13 and the back plate 3. Then remove the disassembly shell 13 from the back plate 3. At this time, the movable chamber 7 is exposed, which makes it easier for maintenance personnel to inspect and maintain components such as the threaded rod 17 and the sliding block 16 in the movable chamber 7. After the maintenance is completed, reattach the disassembly shell 13 to the back plate 3, and then insert the bolt 14 into the corresponding insertion position between the disassembly shell 13 and the back plate 3 to complete the fixation of the disassembly shell 13 and restore the closed state of the back plate 3.

[0025] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A folding storage extension accessory for a sofa backrest, characterized in that, include: A base plate (1) is provided with a sofa (2) installed on the front side of the top of the base plate (1). The sofa (2) includes a sofa body and a backrest. A backrest board (3) is installed on the back side of the top of the base plate (1). The back side of the sofa (2) is fixedly connected to the front side of the backrest board (3). Side storage chambers (4) are provided on both the left and right sides of the backrest board (3). Two side partitions (5) are provided on the inner wall of the side storage chamber (4). A closed door (6) is hinged to the inner wall of the side storage chamber (4) away from the backrest board (3). The movable chamber (7) is provided inside the rear side of the back plate (3). The storage cabinet (8) is slidably connected to the inner wall of the top center of the back plate (3). The top of the storage cabinet (8) is equipped with an alignment plate (9). Storage components are installed on the front side of the storage cabinet (8); The maintenance assembly is installed on the inner rear side of the back panel (3); Guide groove (15), the interior of the movable chamber (7) is symmetrically provided with guide groove (15), the inner wall of the guide groove (15) is slidably connected with a sliding block (16), and the interior of the two guide grooves (15) is respectively equipped with a threaded rod (17) and a guide rod (18). The drive assembly is installed inside the base plate (1).

2. The folding storage extension accessory for a sofa backrest according to claim 1, characterized in that, The storage assembly includes multiple storage compartments (10), which are arranged on the front side of the storage cabinet (8). The inner wall of the storage compartments (10) is provided with storage partitions (11), and multiple label slots (12) are provided in the middle of the front side of the storage cabinet (8).

3. The folding storage extension accessory for a sofa backrest according to claim 1, characterized in that, The maintenance assembly includes a disassembly shell (13), the front inner wall of the disassembly shell (13) fits into the rear inner wall of the back panel (3), and bolts (14) are inserted into the inner walls at the four corners of the disassembly shell (13). The disassembly shell (13) is fixed to the rear inner wall of the back panel (3) by multiple bolts (14).

4. The folding storage extension accessory for a sofa backrest according to claim 1, characterized in that, The drive assembly includes a transmission rod (19), the outside of which is rotatably connected to the inner wall of the top of the base plate (1), a worm gear (20) is fixedly connected to the outside of the bottom end of the transmission rod (19), a worm (21) is rotatably connected inside the base plate (1), and a servo motor (22) is installed inside the base plate (1) on one side of the worm (21).

5. The folding storage extension accessory for a sofa backrest according to claim 1, characterized in that, The outside of the alignment plate (9) is in contact with the top inner wall of the back plate (3), and the outside of the storage cabinet (8) is slidably connected to the inner wall of the active chamber (7).

6. The folding storage extension accessory for a sofa backrest according to claim 1, characterized in that, The top of one of the two sliding blocks (16) is fixedly connected to the bottom of the storage cabinet (8), the inner wall of one sliding block (16) is threadedly connected to the threaded rod (17), and the inner wall of the other sliding block (16) is slidably connected to the outside of the guide rod (18).

7. The folding storage extension accessory for a sofa backrest according to claim 3, characterized in that, The top end of the transmission rod (19) is fixedly connected to the bottom end of the threaded rod (17), the worm wheel (20) and the worm (21) are meshed, and the drive end of the servo motor (22) is fixedly connected to one end of the worm (21).

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