Detachable sofa structure

Abstract

The utility model belongs to the technical field of sofa structures, and particularly relates to a detachable sofa structure. According to the detachable sofa structure provided by the utility model, a box-type backrest plate, a box-type armrest plate, a backrest bolt unit, an armrest bolt unit, a transverse bolt unit, an integral supporting leg unit and an integral covering type supporting leg unit are arranged on a seat plate, so that 1, the lower part and two side edges of the box-type backrest plate are all provided with connecting structures; the strength of the mounting structure is greatly improved; and 2, the integral supporting leg unit and the integral covering type supporting leg unit are screwed on the seat plate, and the interiors of the supporting leg units and the integral covering type supporting leg unit are connected into a whole, so that the supporting legs are not easy to loosen and deflect, and the supporting effect of the sofa is more stable.

Description

Technical Field

[0001] The utility model belongs to the technical field of sofa structures, and in particular relates to a detachable sofa structure. Background Art

[0002] The concept of a detachable sofa generally refers to: at least one of its backrest, armrests and supporting legs can be removed, separated or folded. Compared with ordinary sofas, the advantage of a detachable sofa is that it takes up less space in the storage state, which is convenient for storage and transportation.

[0003] However, in general, the structural strength of a detachable sofa is not as good as that of a fully fixed ordinary sofa. A qualified detachable sofa needs to strike a proper balance between the ease of disassembly and assembly and the structural firmness.

[0004] For example, a Chinese utility model patent with authorization announcement number CN219762911U and authorization announcement date 2023.09.29 discloses a detachable sofa chair, including a seat cushion, a backrest is provided on the top of the seat cushion, the bottom surface of the seat cushion is fixedly connected with four hinged frames, the four hinged frames are hinged with connecting rods, the bottom surfaces of the four connecting rods are fixedly connected with supporting legs, the bottom surface of the seat cushion is fixedly connected with eight fixing plates, the eight fixing plates are distributed in groups of two on the front and back of the four supporting legs, fixing rods are placed on the front and back of the four supporting legs, and fixing holes are opened on the front and back of the four supporting legs.

[0005] The structural principle and advantages of the detachable sofa chair in this utility model patent are as follows: the support legs are driven to flip over under the action of the articulated frame, and they can be easily disassembled and assembled; the support legs are fixed by the clearance between the fixing rod and the fixing hole to improve the stability of the support legs; at the same time, the seat cushion and the backrest are connected by the threaded connection between the support rod and the screw, which is convenient for the staff to operate and more convenient and practical.

[0006] However, the detachable sofa chair still has at least the following two shortcomings in actual use, which are also the technical problems to be solved by the present utility model, namely:

[0007] 1. The backrest structure is only screwed and installed through the lower support rod. The installation strength is not enough. The support rod is subjected to concentrated force and is easy to break.

[0008] 2. The support leg structure is designed to prevent accidental rotation and folding by using a smaller fixed rod end. However, the strength of this rod is not enough. If the occupant twists left or right, the fixed rod will easily separate from the support leg, and the entire sofa chair will collapse.

[0009] Therefore, in summary, there is an urgent need for a new type of detachable sofa with relatively large backrest mounting structure strength and supporting leg mounting structure strength. Utility Model Content

[0010] The utility model provides a detachable sofa structure, which can be arranged on a seat board in a box-type backrest board, a box-type armrest board, a backrest bolt unit, an armrest bolt unit, a transverse bolt unit, an integral support leg unit, and an integral covering support leg unit, so that:

[0011] 1. The box-type backrest board has connecting structures at the bottom and two sides, which greatly improves the strength of its installation structure;

[0012] 2. The integral supporting leg unit and the integral covering supporting leg unit are both screwed to the seat plate, and are internally connected as a whole, making it difficult for the supporting legs to loosen and deflect, and the sofa support effect is more stable.

[0013] The technical solution adopted by the utility model to solve the above-mentioned problem is: a detachable sofa structure, including a seat plate, a box-type backrest plate, and a box-type armrest plate, and also including a backrest bolt unit arranged on the seat plate and the box-type backrest plate, an armrest bolt unit arranged on the seat plate and the box-type armrest plate, a transverse bolt unit arranged on the box-type backrest plate and the box-type armrest plate, an integral supporting leg unit arranged on the seat plate and connecting the backrest bolt unit and the armrest bolt unit, and an integral covering supporting leg unit arranged on the seat plate and connecting the armrest bolt unit.

[0014] A further preferred technical solution is that the backrest bolt unit includes a rear hole arranged on the seat plate, a bottom plate hole arranged on the box-type backrest plate, a backrest bolt arranged on the bottom plate hole and the rear hole, and a mounting nut arranged on the backrest bolt and used to clamp the lower surface of the seat plate.

[0015] A further preferred technical solution is that the armrest bolt unit includes a side hole arranged on the seat plate, a bottom hole arranged on the box-type armrest plate, and an armrest bolt arranged on the bottom hole and the side hole and used for screwing the integral supporting leg unit or the integral covering supporting leg unit.

[0016] A further preferred technical solution is that the transverse bolt unit includes side plate holes arranged on the box-type backrest plate and the box-type armrest plate, and tensile threaded connectors arranged on the side plate holes.

[0017] A further preferred technical solution is that the integral supporting leg unit includes a rear leg arranged on the lower surface of the seat plate, a rear threaded groove arranged on the upper end surface of the rear leg and used to install the armrest bolt, a rear hole plate sleeved on the two rear legs, and a connecting hole arranged on the rear hole plate and used to pass the backrest bolt.

[0018] A further preferred technical solution is that the backrest bolt unit further includes two limit nuts which are arranged on the backrest bolt and are used to clamp the upper and lower surfaces of the rear hole plate respectively.

[0019] A further preferred technical solution is that the integral covering supporting leg unit includes a front leg arranged on the lower surface of the seat plate, a front threaded groove arranged on the upper end surface of the front leg and used to install the handrail bolt, a front hole plate sleeved on the two front legs, and a vertical baffle arranged on the front hole plate and used to cover the two front legs.

[0020] A further preferred technical solution is that the integral covering support leg unit further includes a limiting ring which is arranged on the front leg and is used to support the front orifice plate.

[0021] A further preferred technical solution is that four threaded grooves connected to the side holes and used for installing the integral supporting leg unit and the integral covering supporting leg unit are also provided on the lower surface of the seat plate.

[0022] A further preferred technical solution is that the distances between the upper surface of the rear orifice plate and the upper surface of the front orifice plate and the lower surface of the seat plate are both greater than or equal to 3 cm. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the utility model.

[0024] Figure 2 It is a schematic diagram of the position of the transverse bolt unit in the utility model.

[0025] Figure 3 It is a schematic diagram of the positions of the rear hole and the side holes in the utility model.

[0026] Figure 4 It is a schematic diagram of the positions of the bottom plate holes and the bottom edge holes in the utility model.

[0027] Figure 5 It is a schematic diagram of the position structure of the integral supporting leg unit in the utility model.

[0028] Figure 6 It is a structural schematic diagram of the rear orifice plate in the utility model.

[0029] Figure 7 It is a schematic structural diagram of the integrally covered supporting leg unit in the utility model.

[0030] Figure 8 It is a schematic diagram of the position and shape of the vertical baffle in the utility model.

[0031] In the figure, the meanings of the symbols are as follows:

[0032] Seat board 11, box-type backrest board 12, box-type armrest board 13;

[0033] Backrest bolt unit 1, armrest bolt unit 2, transverse bolt unit 3, integral support leg unit 4, integral cover support leg unit 5, threaded groove 6;

[0034] Rear hole 101, bottom plate hole 102, backrest bolt 103, mounting nut 104, limit nut 105;

[0035] Side hole 201, bottom hole 202, handrail bolt 203;

[0036] Side plate hole 301, tensile bolt connection piece 302;

[0037] Rear leg 401, rear thread groove 402, rear hole plate 403, connecting hole 404;

[0038] Front leg 501 , front thread groove 502 , front orifice plate 503 , vertical baffle 504 , and limiting ring 505 . DETAILED DESCRIPTION

[0039] The following description is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention.

[0040] As attached Figure 1-8 As shown, a detachable sofa structure includes a seat plate 11, a box-type backrest plate 12, and a box-type armrest plate 13, and also includes a backrest bolt unit 1 arranged on the seat plate 11 and the box-type backrest plate 12, an armrest bolt unit 2 arranged on the seat plate 11 and the box-type armrest plate 13, a transverse bolt unit 3 arranged on the box-type backrest plate 12 and the box-type armrest plate 13, and an integral supporting leg unit 4 arranged on the seat plate 11 and connecting the backrest bolt unit 1 and the armrest bolt unit 2, and an integral covering supporting leg unit 5 arranged on the seat plate 11 and connecting the armrest bolt unit 2.

[0041] In this embodiment, the "box-type" in the box-type backrest board 12 and the box-type armrest board 13 means that the structure of both of them includes at least 5 boards, and the more preferred solution is 6 boards to form a closed "box-type". Among them, the back panel of the box-type backrest board 12 can be omitted and covered with a sofa skin, and the relatively inner side panel of the box-type armrest board 13 can be omitted and covered with a sofa skin. The above two frame structures are both common commercial styles.

[0042] In addition, the backrest bolt unit 1 is used to install and fix the bottom edge of the box-type backrest board 12, while preventing the integrated support leg unit 4 from falling. The armrest bolt unit 2 is used to install the box-type armrest board 13, the integrated support leg unit 4 and the integrated cover support leg unit 5. The transverse bolt unit 3 is used to reinforce the two sides of the box-type backrest board 12, forming three installation locations thereon, so that it is not easy to break and deform backwards.

[0043] Among them, the integral supporting leg unit 4 and the integral covering supporting leg unit 5 each include two sofa legs, which are screwed to the armrest bolt unit 2 instead of being clamped with relatively low connection strength, which makes the sofa legs have the advantage of high strength of the basic installation structure.

[0044] In addition, the word "integrated" in the integrated supporting leg unit 4 and the integrated covering supporting leg unit 5 means that the two sofa legs are integrated and connected together, making it difficult for them to deviate and shake.

[0045] At this point, the detachable sofa structure has achieved a relatively suitable balance between the difficulty of disassembly and the strength of connection, ensuring a small volume when disassembled and folded, the convenience of disassembly operation, and the structural stability during installation and use.

[0046] The backrest bolt unit 1 includes a rear hole 101 arranged on the seat plate 11, a bottom plate hole 102 arranged on the box-type backrest plate 12, a backrest bolt 103 arranged on the bottom plate hole 102 and the rear hole 101, and a mounting nut 104 arranged on the backrest bolt 103 and used for clamping the lower surface of the seat plate 11.

[0047] In this embodiment, the number of the rear holes 101 is 2-3, and the word "rear" refers to the direction away from the opening of the sofa and away from the seated person. Among them, the integral support leg unit 4 is at the rear, and the integral covering support leg unit 5 is at the opposite front. Correspondingly, this is also the reason why the latter needs to be "covered", that is, to cover the sofa legs, thereby improving the integrity and aesthetics of the sofa.

[0048] In addition, the seat plate 11 according to the prior art is generally a closed box frame structure, and is generally not a solid structure. Therefore, the rear hole 101 is opened on the top plate and the bottom plate thereof, and the length of the backrest bolt 103 needs to be relatively large, not only to pass through the bottom plate downward, but also to leave the required length for the installation of the integral support leg unit 4.

[0049] The armrest bolt unit 2 includes a side hole 201 arranged on the seat plate 11, a bottom hole 202 arranged on the box-type armrest plate 13, and an armrest bolt 203 arranged on the bottom hole 202 and the side hole 201 and used for screwing the integral supporting leg unit 4 or the integral covering supporting leg unit 5.

[0050] In this embodiment, it does not matter whether the rear hole 101 and the side hole 201 are threaded or not, and the armrest bolt 203 is threadedly connected to the integral support leg unit 4 or the integral covering support leg unit 5, so it does not need to be used with a nut, which is different from the backrest bolt 103. However, the same thing between the two is that their respective lengths need to be relatively large, at least significantly larger than the thickness of the seat plate 11, for example, more than 150% of the thickness of the latter.

[0051] The transverse bolt unit 3 includes a side plate hole 301 provided on the box-type backrest plate 12 and the box-type armrest plate 13 , and a tensile bolt connection member 302 provided on the side plate hole 301 .

[0052] In this embodiment, the tensile threaded connector 302 is a commonly used bolt and nut combination, and the number of the bolt and nut combination is at least one on each side, so as to reinforce the backrest which is more easily broken than the armrest.

[0053] The side plate holes 301 and the tension-resistant screw connection 302 are both inside the backrest and armrest combined structure, and in combination with the cover or the movable plates of the backrest and armrest, the assembly and disassembly of the tension-resistant screw connection 302 is very convenient. The backrest bolt unit 1 and the armrest bolt unit 2 are also the same, that is, the box-type backrest board 12 and the box-type armrest board 13 should not be an integrally fixed closed box body, and at least one of the six surfaces is reserved for the assembly and disassembly of the above-mentioned screw connection structure of the sofa.

[0054] The integral supporting leg unit 4 includes a rear leg 401 arranged on the lower surface of the seat plate 11, a rear threaded groove 402 arranged on the upper end surface of the rear leg 401 and used to install the armrest bolt 203, a rear hole plate 403 sleeved on the two rear legs 401, and a connecting hole 404 arranged on the rear hole plate 403 and used to pass the backrest bolt 103.

[0055] In this embodiment, the number of the rear legs 401 is two, and the “hole” on the rear orifice plate 403 is an opening for socketing the rear legs 401 , so the number of the openings is also two.

[0056] The backrest bolt 103 and the connecting hole 404 may be threaded or not.

[0057] The backrest bolt unit 1 further includes two limiting nuts 105 disposed on the backrest bolt 103 and used to clamp the upper and lower surfaces of the rear orifice plate 403 respectively.

[0058] In this embodiment, the rear orifice plate 403 can integrate the two rear legs 401 and connect and reinforce them. However, if the height of the rear orifice plate 403 is too high, the connection and reinforcement effect is average, because the upper end of the rear leg 401 is relatively strong, and the part that needs to be reinforced is relatively centered.

[0059] Of course, the height of the rear orifice plate 403 cannot be too low, otherwise it will fall directly. Therefore, this is the role of the pair of limit nuts 105.

[0060] The integrally covered supporting leg unit 5 includes a front leg 501 arranged on the lower surface of the seat plate 11, a front threaded groove 502 arranged on the upper end surface of the front leg 501 and used to install the handrail bolt 203, a front hole plate 503 sleeved on the two front legs 501, and a vertical baffle 504 arranged on the front hole plate 503 and used to cover the two front legs 501.

[0061] In this embodiment, the "integral" principle of the integral covering support leg unit 5 is consistent with that of the integral supporting leg unit 4. The "covering" feature is not and does not need to be possessed by the integral supporting leg unit 4. The reason is that the integral covering support leg unit 5 is in the front, and if there is no vertical baffle 504, the two front legs 501 will be exposed and seen, which will greatly reduce the integrity and aesthetics of the appearance of the sofa.

[0062] In addition, the function of the vertical baffle 504 is not just aesthetic. Its upper end is against the lower surface of the seat plate 11, which can not only serve as an end point indicator of the installation height of the front orifice plate 503, but also block and limit the front orifice plate 503 when it is twisted and deformed, making it difficult for the twisting and deformation trend of the front orifice plate 503 to further expand.

[0063] Therefore, the front orifice plate 503 and the vertical baffle plate 504 are integrally formed and made of engineering plastic or metal.

[0064] The integral covering support leg unit 5 further includes a limiting ring 505 which is arranged on the front leg 501 and is used to support the front orifice plate 503 .

[0065] In this embodiment, the limiting ring 505 and the front leg 501 can be screwed or simply sleeved to ensure that the front orifice plate 503 and the vertical baffle plate 504 as a whole are not likely to fall off.

[0066] Moreover, even if the above-mentioned overall structure falls slightly, its connection and reinforcement effect on the two front legs 501 is still effective. Even if the vertical baffle 504 falls to the ground, the front hole plate 503 still simultaneously connects the two front legs 501, and the above-mentioned connection and reinforcement effect is still effective.

[0067] The lower surface of the seat plate 11 is also provided with four threaded grooves 6 which are connected to the side holes 201 and are used for installing the integral supporting leg unit 4 and the integral covering supporting leg unit 5.

[0068] In this embodiment, when the seat plate 11 is a hollow frame structure, the thread groove 6 can be provided by an internal threaded tube and a top end cover. At this time, the rear leg 401 and the front leg 501 are screwed to the armrest bolt 203 and the thread groove 6, ensuring that the installation structure of the four sofa support legs is more stable.

[0069] Moreover, at this time, the threaded section on the front leg 501 provides a convenient basis for the threaded installation of the limiting ring 505.

[0070] Furthermore, the original sofa support leg socket holes on the rear hole plate 403 and the front hole plate 503 can also be upgraded to threaded holes, which is very flexible and practical.

[0071] The distances between the upper surfaces of the rear orifice plate 403 and the front orifice plate 503 and the lower surface of the seat plate 11 are both greater than or equal to 3 cm.

[0072] In this embodiment, the distance between the lower surface of the seat plate 11 and the ground is 5-10 cm. The above-mentioned height restrictions of the rear hole plate 403 and the front hole plate 503 can avoid compromising the connection reinforcement effect of the sofa support legs of the two, because the upper end of the sofa support leg is the installation end, its stability is relatively high, and the demand for connection reinforcement is general.

[0073] Therefore, the rear orifice plate 403 and the front orifice plate 503 need to be arranged roughly vertically in the center on the sofa support legs.

[0074] The above is a detailed description of the implementation of the utility model in conjunction with the accompanying drawings, but the utility model is not limited to the above implementation. Various modifications can be made within the knowledge of ordinary technicians in the technical field without departing from the purpose of the utility model. These are all non-creative modifications and are protected by patent law as long as they are within the scope of the claims of the utility model.

Claims

1. A detachable sofa structure, comprising a seat board (11), a box-type backrest board (12), and a box-type armrest board (13), characterized in that: The invention also includes a backrest bolt unit (1) arranged on the seat plate (11) and the box-type backrest plate (12), an armrest bolt unit (2) arranged on the seat plate (11) and the box-type armrest plate (13), a transverse bolt unit (3) arranged on the box-type backrest plate (12) and the box-type armrest plate (13), an integral support leg unit (4) arranged on the seat plate (11) and connecting the backrest bolt unit (1) and the armrest bolt unit (2), and an integral covering support leg unit (5) arranged on the seat plate (11) and connecting the armrest bolt unit (2).

2. The detachable sofa structure according to claim 1, characterized in that: The backrest bolt unit (1) comprises a rear hole (101) arranged on the seat plate (11), a bottom plate hole (102) arranged on the box-type backrest plate (12), a backrest bolt (103) arranged on the bottom plate hole (102) and the rear hole (101), and a mounting nut (104) arranged on the backrest bolt (103) and used for clamping the lower surface of the seat plate (11).

3. The detachable sofa structure according to claim 2, characterized in that: The armrest bolt unit (2) comprises a side hole (201) arranged on the seat plate (11), a bottom hole (202) arranged on the box-type armrest plate (13), and an armrest bolt (203) arranged on the bottom hole (202) and the side hole (201) and used for screwing the integral support leg unit (4) or the integral covering support leg unit (5).

4. The detachable sofa structure according to claim 1, characterized in that: The transverse bolt unit (3) comprises a side plate hole (301) arranged on the box-type backrest plate (12) and the box-type armrest plate (13), and a tensile bolt connection piece (302) arranged on the side plate hole (301).

5. The detachable sofa structure according to claim 3, characterized in that: The integral support leg unit (4) comprises a rear leg (401) arranged on the lower surface of the seat plate (11), a rear threaded groove (402) arranged on the upper end surface of the rear leg (401) and used for mounting the armrest bolt (203), a rear hole plate (403) sleeved on the two rear legs (401), and a connecting hole (404) arranged on the rear hole plate (403) and used for passing the backrest bolt (103).

6. The detachable sofa structure according to claim 5, characterized in that: The backrest bolt unit (1) further comprises two limiting nuts (105) which are arranged on the backrest bolt (103) and are used to clamp the upper and lower surfaces of the rear orifice plate (403) respectively.

7. The detachable sofa structure according to claim 5, characterized in that: The integrally covered supporting leg unit (5) comprises a front leg (501) arranged on the lower surface of the seat plate (11), a front threaded groove (502) arranged on the upper end surface of the front leg (501) and used to install the handrail bolt (203), a front hole plate (503) sleeved on the two front legs (501), and a vertical baffle (504) arranged on the front hole plate (503) and used to cover the two front legs (501).

8. The detachable sofa structure according to claim 7, characterized in that: The integral covering support leg unit (5) further comprises a limiting ring (505) arranged on the front leg (501) and used for supporting the front orifice plate (503).

9. The detachable sofa structure according to claim 3, characterized in that: The lower surface of the seat plate (11) is also provided with four threaded grooves (6) which are connected to the side holes (201) and are used to install the integral supporting leg unit (4) and the integral covering supporting leg unit (5).

10. The detachable sofa structure according to claim 7, characterized in that: The distances between the upper surface of the rear orifice plate (403) and the upper surface of the front orifice plate (503) and the lower surface of the seat plate (11) are both greater than or equal to 3 cm.

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