Novel multifunctional sofa

Abstract

The utility model discloses a novel multifunctional sofa which comprises two first sofa single bodies and a second sofa single body which is arranged between the two first sofa single bodies and is connected with the first sofa single bodies, two sides of the bottom ends of the first sofa single bodies and the second sofa single body are respectively provided with a main U-shaped foot frame and an auxiliary U-shaped foot frame which are symmetrical, the two sides of the top of the main U-shaped foot frame are each provided with a C-shaped hollow base, and the two sides of the top of the auxiliary U-shaped foot frame are each provided with an end base. Tedious steps of accurately aligning a bolt hole, screwing a bolt and the like are not needed, the assembling efficiency can be remarkably improved, the assembling time is shortened, once the square butt joint arm is correctly inserted into the C-shaped hollow seat, the right-angle blocking arm can be automatically pushed to the saw blade type protruding part by rotating the self-locking driving structure, and firm locking is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of sofas, in particular to a novel multifunctional sofa. Background Art

[0002] The structure of a sofa is delicate and complex, mainly composed of several parts such as the support frame, seat system, filling material, external covering and possible functional accessories. The support frame is the skeleton of the sofa, usually made of solid wood, metal or composite materials, providing stability and load-bearing capacity for the entire sofa. The seat system includes spring systems, bandages or elastic nets, which disperse the weight of the human body and provide appropriate elasticity and support. Filling materials, such as high-density sponges, down or artificial cotton, are cleverly placed in the seat system to give the sofa a soft and comfortable touch. External coverings, such as leather, fabric or other synthetic materials, not only beautify the appearance of the sofa, but also provide additional comfort and durability. In addition, some modern sofas are also equipped with functional accessories, such as electric adjustment mechanisms, massage functions or storage space, etc.; for example, a sofa disclosed in the authorization announcement number CN220089011U includes a base, a backrest, a seat cushion and an armrest constituting the sofa, wherein the backrest is fixedly installed above the base, the seat cushion is placed above the base, the armrest is arranged on the side of the base, and the side of the base is provided with a connecting unit for assembling the armrest, and the armrest can be disassembled and transported separately, thereby avoiding the armrest being installed on the base to increase the base area as much as possible, thereby reducing the bumps caused by the handling of large-area goods and avoiding the bumps again as much as possible. The problem of scratches, but the sofa in the above technical solution is similar to the sofa structure in the prior art, which is composed of more than two sofa monomers to form a long sofa assembly. However, in order to maintain a stable connection between the sofa monomers, a connection structure composed of bolts, gaskets and other components will be added at the bottom of the two adjacent sofa monomers. This structural form causes inconvenience to the on-site assembly operation of the staff, that is, the staff needs to accurately align the bolt holes and perform the screwing operation, which requires the operator to have a high level of technical skills and patience, so docking errors and screwing difficulties often occur, which will not only prolong the assembly time, but also may affect the final assembly quality. Utility Model Content

[0003] The purpose of the utility model is to provide a novel multifunctional sofa. When two adjacent sofa units are connected, the end seat at the bottom end of the second sofa unit is docked with the C-shaped hollow seat at the bottom end of the first sofa unit through a square docking arm. After the end seat is docked with the C-shaped hollow seat through the square docking arm, the staff drives the front axle to rotate by rotating the self-locking drive structure, so that the right-angle blocking arm blocks the saw blade-like protrusion on the square docking arm, thereby preventing the right-angle blocking arm and the square docking arm from detaching, so as to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the utility model provides the following technical solution: a novel multifunctional sofa, which includes two first sofa monomers and a second sofa monomer disposed between the two first sofa monomers and connected to the first sofa monomers. On both sides of the bottom ends of the first sofa monomers and the second sofa monomer, two symmetric main U-shaped foot frames and auxiliary U-shaped foot frames are respectively installed. On both sides of the top of the main U-shaped foot frame, C-shaped hollow seats are installed. On both sides of the top of the auxiliary U-shaped foot frame, end seats are installed. On the outer wall of one side of the end seat facing the C-shaped hollow seat, two symmetric square docking arms are installed. At the top and bottom ends of the square docking arm, saw blade-shaped protrusions are integrally formed. On one side inside the C-shaped hollow seat, two symmetric front shafts are rotatably installed. At one end of the surface of the front shaft, an auxiliary swing block is fixed. On the outer wall of one side of the auxiliary swing block, a right-angle blocking arm for blocking the sliding of the square docking arm and the saw blade-shaped protrusion is fixed. On the other side inside the C-shaped hollow seat, two symmetric rear shafts are rotatably installed. At one end of the surface of the rear shaft, a connecting rod biasing structure for driving the rotation of the front shaft is installed. At the bottom end of the C-shaped hollow seat, a rotary self-locking driving structure for driving the two rear shafts to rotate synchronously and reversely is installed.

[0005] Preferably, both the main U-shaped foot frame and the auxiliary U-shaped foot frame are made of components of aluminum alloy material.

[0006] Preferably, the connecting rod biasing structure includes a main swing block fixed on the surface of the rear shaft, and a connecting rod hingedly installed on the outer wall of one side of the main swing block. The other end of the connecting rod is hinged to the outer wall of one side of the auxiliary swing block.

[0007] Preferably, the rotary self-locking driving structure includes a rotating shaft rotatably installed on the outer wall of one side of the C-shaped hollow seat, a worm fixed at one end of the rotating shaft, a worm gear installed at the bottom end of one of the rear shafts, and a gear transmission structure installed between the two rear shafts for maintaining power connection. The worm gear and the worm are meshed with each other.

[0008] Preferably, the gear transmission structure is gear discs installed on the two rear shafts, and the two gear discs are meshed with each other.

[0009] Preferably, one end of the rotating shaft penetrates to the outside of the C-shaped hollow seat and a rotating handle is installed.

[0010] Preferably, the surfaces of the auxiliary swing block and the right-angle blocking arm are provided with concentric internal threaded holes, and the auxiliary swing block and the right-angle blocking arm are connected to each other through the internal threaded holes and bolts.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: By providing structures such as a square docking arm and a right-angle blocking arm that cooperate with each other, the staff only needs to insert the square docking arm into the C-shaped hollow seat, and then operate the rotation self-locking drive structure to complete the locking. In this process, there is no need for cumbersome steps such as precisely aligning bolt holes and screwing bolts, which can significantly improve the assembly efficiency, shorten the assembly time, and once the square docking arm is correctly inserted into the C-shaped hollow seat, the rotation self-locking drive structure can automatically push the right-angle blocking arm towards the saw-tooth-shaped protrusion to achieve firm locking, reducing docking errors caused by human factors and improving the accuracy and reliability of the assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a schematic three-dimensional structure of the present utility model Figure I ;

[0013] Figure 2 is a schematic three-dimensional structure of the present utility model Figure II ;

[0014] Figure 3 is a schematic three-dimensional structure diagram of the C-shaped hollow seat of the present utility model;

[0015] Figure 4 is a schematic three-dimensional sectional structure diagram of the C-shaped hollow seat of the present utility model;

[0016] Figure 5 is a schematic three-dimensional structure diagram of the rotation self-locking drive structure of the present utility model.

[0017] In the figure: 1, the first sofa monomer; 2, the second sofa monomer; 3, the main U-shaped foot frame; 4, the auxiliary U-shaped foot frame; 5, the C-shaped hollow seat; 6, the end seat; 7, the square docking arm; 701, the saw-tooth-shaped protrusion; 8, the rear shaft; 9, the main swing block; 10, the front shaft; 11, the auxiliary swing block; 12, the right-angle blocking arm; 13, the connecting rod; 14, the rotation self-locking drive structure. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0019] Please refer to Figures 1-5, an embodiment provided by the present utility model: a new type of multifunctional sofa, including two first sofa monomers 1 and a second sofa monomer 2 disposed between the two first sofa monomers 1 and connected to the first sofa monomers 1. On both sides of the bottom ends of the first sofa monomer 1 and the second sofa monomer 2, two symmetric main U-shaped foot frames 3 and auxiliary U-shaped foot frames 4 are respectively installed. On both sides of the top of the main U-shaped foot frame 3, C-shaped hollow seats 5 are installed. On both sides of the top of the auxiliary U-shaped foot frame 4, end seats 6 are installed. On the outer wall of one side of the end seat 6 facing the C-shaped hollow seat 5, two symmetric square docking arms 7 are installed. At the top and bottom ends of the square docking arm 7, saw blade-shaped protrusions 701 are integrally formed. On one side inside the C-shaped hollow seat 5, two symmetric front shafts 10 are rotatably installed. At one end of the surface of the front shaft 10, a secondary swing block 11 is fixed. On the outer wall of one side of the secondary swing block 11, a right-angle stop arm 12 for blocking the sliding of the square docking arm 7 and the saw blade-shaped protrusion 701 is fixed;

[0020] On the surfaces of the secondary swing block 11 and the right-angle stop arm 12, concentric internal threaded holes are provided, and the secondary swing block 11 and the right-angle stop arm 12 are connected to each other through the internal threaded holes and bolts;

[0021] On the other side inside the C-shaped hollow seat 5, two symmetric rear shafts 8 are rotatably installed. At one end of the surface of the rear shaft 8, a connecting rod biasing structure for driving the rotation of the front shaft 10 is installed. At the bottom end of the C-shaped hollow seat 5, a rotary self-locking drive structure 14 for driving the two rear shafts 8 to rotate synchronously and reversely is installed;

[0022] Both the main U-shaped foot frame 3 and the auxiliary U-shaped foot frame 4 are made of components of aluminum alloy material. The density of aluminum alloy is low, and it is lighter in weight compared to other metal materials such as steel. This means that the U-shaped foot frames made of aluminum alloy can significantly reduce the weight of the entire furniture such as the sofa, making it convenient for handling and moving;

[0023] The connecting rod biasing structure includes a main swing block 9 fixed on the surface of the rear shaft 8, and a connecting rod 13 hingedly installed on the outer wall of one side of the main swing block 9. The other end of the connecting rod 13 is hinged to the outer wall of one side of the secondary swing block 11;

[0024] When the right-angle stop arm 12 and the secondary swing block 11 deflect with the front shaft 10 as the central axis, the secondary swing block 11 is mainly pushed by the connecting rod 13, and the two opposite right-angle stop arms 12 can move uniformly under the rotation of the rotary self-locking drive structure 14. Its design is reasonable and easy to operate. When it is necessary to repair or replace the sofa monomer, it can also be disassembled and reinstalled more conveniently;

[0025] The rotation self-locking drive structure 14 includes a rotating shaft rotatably mounted on the outer wall of one side of the C-shaped hollow seat 5, a worm fixed to one end of the rotating shaft, a worm gear mounted at the bottom end of one of the rear shafts 8, and a gear transmission structure mounted between the two rear shafts 8 for maintaining power connection. The worm gear and the worm are meshed with each other. The gear transmission structure is a gear disc mounted on the two rear shafts 8, and the two gear discs are meshed with each other;

[0026] One end of the rotating shaft penetrates to the outside of the C-shaped hollow seat 5 and is provided with a rotating handle. When operating the rotation self-locking drive structure 14, the user rotates the rotating handle on the outer wall of the C-shaped hollow seat 5, and the rotating handle drives the rotating shaft to rotate. Then the rotating shaft drives the worm gear at the bottom end of one of the rear shafts 8 to rotate through the worm, and the other rear shaft 8 rotates synchronously and reversely under the drive of the gear transmission structure, so that components such as the front shaft 10, the auxiliary swing block 11, and the right-angle stop arm 12 can be deflected under the drive of the connecting rod 13;

[0027] In this structure, the self-locking function of the worm and the worm gear can maintain the rotation angles of the rear shaft 8 and the front shaft 10. Once the rotation self-locking drive structure 14 reaches a specific position, the rear shaft 8 and the first sofa unit 1 will be automatically locked to prevent the right-angle stop arm 12 from rotating or loosening accidentally. The stable locking state ensures the firm and reliable connection between the sofa units, and avoids the shaking or instability problems caused by the loosening of the connection during use.

[0028] When the embodiment of the present application is in use, first, the staff takes out the first sofa unit 1 and the second sofa unit 2 to be connected and assembled into a long-sized sofa assembly, and places the second sofa unit 2 between the two first sofa units 1. Then, the staff keeps the leg rest surfaces of the first sofa unit 1 and the second sofa unit 2 flush, and pushes the first sofa unit 1 towards the direction of the second sofa unit 2 until the end seat 6 at the bottom of the second sofa unit 2 is docked with the C-shaped hollow seat 5 at the bottom of the first sofa unit 1 through the square docking arm 7. After the end seat 6 is docked with the C-shaped hollow seat 5 through the square docking arm 7, the staff first drives the two rear axles 8 to rotate synchronously and reversely through the rotary self-locking drive structure 14, and the rear axle 8 drives the main swing block 9 to deflect. During this process, the main swing block 9 drives the auxiliary swing block 11 to deflect synchronously through the connecting rod 13. At this time, the rotation directions of the main swing block 9 and the auxiliary swing block 11 are the same until the horizontal extension of the right-angle stop arm 12 contacts the outer wall of one side of the sawtooth-shaped protrusion 701, so that the right-angle stop arm 12 blocks the sawtooth-shaped protrusion 701 on the square docking arm 7, thereby preventing the right-angle stop arm 12 and the square docking arm 7 from separating. After that, the staff can operate each rotary self-locking drive structure 14 according to the same steps until the assembly work of the sofa assembly is finally completed. This structural design greatly simplifies the assembly process. The staff only needs to insert the square docking arm 7 into the C-shaped hollow seat 5, and then operate the rotary self-locking drive structure 14 to complete the locking. During this process, there is no need for cumbersome steps such as accurately aligning the bolt holes and screwing the bolts, which can significantly improve the assembly efficiency, shorten the assembly time, and once the square docking arm 7 is correctly inserted into the C-shaped hollow seat 5, the rotary self-locking drive structure 14 can automatically push the right-angle stop arm 12 towards the sawtooth-shaped protrusion 701 to achieve firm locking, reducing the docking errors caused by human factors and improving the accuracy and reliability of the assembly.

Claims

1. A new multifunctional sofa, characterized by: The sofa comprises two first sofa monomers (1) and a second sofa monomer (2) arranged between the two first sofa monomers (1) and connected to the first sofa monomers (1); two symmetrical main U-shaped foot frames (3) and auxiliary U-shaped foot frames (4) are respectively installed on both sides of the bottom ends of the first sofa monomers (1) and the second sofa monomers (2); both sides of the top of the main U-shaped foot frame (3) are installed with a C-shaped hollow seat (5); both sides of the top of the auxiliary U-shaped foot frame (4) are installed with an end seat (6); two symmetrical square docking arms (7) are installed on the outer wall of one side of the end seat (6) facing the C-shaped hollow seat (5); the top and bottom ends of the square docking arms (7) are integrally formed with saw blade-like protrusions. Part (701), two symmetrical front shafts (10) are rotatably mounted on one side of the C-shaped hollow seat (5), one end of the surface of the front shaft (10) is fixed with an auxiliary swing block (11), and one side outer wall of the auxiliary swing block (11) is fixed with a right-angle blocking arm (12) for blocking the square docking arm (7) and the saw blade-type protrusion (701) from sliding, and two symmetrical rear shafts (8) are rotatably mounted on the other side of the C-shaped hollow seat (5), one end of the surface of the rear shaft (8) is installed with a connecting rod deflection structure for driving the front shaft (10) to rotate, and the bottom end of the C-shaped hollow seat (5) is installed with a rotation self-locking drive structure (14) for driving the two rear shafts (8) to rotate synchronously in the opposite direction.

2. A novel multifunctional sofa according to claim 1, characterized in that: The main U-shaped foot frame (3) and the auxiliary U-shaped foot frame (4) are both made of aluminum alloy components.

3. The novel multifunctional sofa according to claim 1 is characterized in that: The connecting rod deflection structure comprises a main swing block (9) fixed on the surface of the rear axle (8), and a connecting rod (13) hingedly mounted on an outer wall of one side of the main swing block (9), and the other end of the connecting rod (13) is hingedly connected to an outer wall of one side of the auxiliary swing block (11).

4. The novel multifunctional sofa according to claim 1 is characterized in that: The rotary self-locking drive structure (14) comprises a rotating shaft rotatably mounted on an outer wall of one side of the C-shaped hollow seat (5), a worm screw fixed at one end of the rotating shaft, a worm wheel mounted at the bottom end of one of the rear shafts (8), and a gear transmission structure mounted between the two rear shafts (8) for maintaining power connection, wherein the worm wheel and the worm screw are meshed with each other.

5. The novel multifunctional sofa according to claim 4 is characterized in that: The gear transmission structure is a gear plate installed on the two rear axles (8), and the two gear plates are meshed with each other.

6. The novel multifunctional sofa according to claim 4 is characterized in that: One end of the rotating shaft passes through the outside of the C-shaped hollow seat (5) and is provided with a rotating handle.

7. The novel multifunctional sofa according to claim 1 is characterized in that: The surfaces of the auxiliary swing block (11) and the right-angle stop arm (12) are provided with internal thread holes which are concentric with each other, and the auxiliary swing block (11) and the right-angle stop arm (12) are connected to each other via the internal thread holes and bolts.

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