Sofa seat frame structure and sofa

By cross-setting elastic bands and support members with different thicknesses in the sofa seat frame structure, the problem of collapse of the sofa seat surface is solved, achieving uniform stress and enhanced sitting feeling.

CN223262589UActive Publication Date: 2025-08-26DONGGUAN AIMU BEDROOM SUPPLIES
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Patent Information

Application Number
CN202422396777.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-09-29
Publication Date
2025-08-26
Estimated Expiration
2034-09-29

AI Technical Summary

Technical Problem

The sponge material in the middle of the existing sofa seat surface has lost its elasticity due to long-term use, resulting in collapse. The existing improvement measures have limited effect.

Method used

In the sofa seat frame structure, a plurality of first elastic bands are arranged at intervals in the width direction and a plurality of second elastic bands are arranged at intervals in the length direction, and are cross-connected. The thickness of the second elastic band is greater than that of the first elastic band, and the support member is arranged close to the second elastic band to provide additional support.

Benefits of technology

The sofa seat surface is uniformly subjected to stress, preventing collapse and deformation, and improving the sitting feeling and support ability.

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Abstract

The utility model discloses a sofa seat frame structure and a sofa, the sofa seat frame structure comprises a frame, a support piece, a plurality of first elastic bands and a plurality of second elastic bands, the middle part of the frame is hollowed to form a hollowed part; the supporting piece is arranged in the hollow part of the frame and extends in the width direction of the frame, and the two ends of the supporting piece are connected to the two sides of the frame in the width direction respectively; the first elastic bands extend in the length direction of the frame, and the multiple first elastic bands are arranged in the hollowed-out part at intervals in the width direction of the frame. The second elastic bands extend in the width direction of the frame, the second elastic bands are arranged in the length direction of the frame, the second elastic bands and the first elastic bands are connected in a crossed mode, each second elastic band comprises a first sub-elastic band and a second sub-elastic band, the thickness of each second sub-elastic band is larger than that of each first sub-elastic band, and the thickness of each second sub-elastic band is larger than that of each first sub-elastic band. And the second sub-elastic band is arranged close to the supporting piece. The sofa seat surface can be prevented from collapsing, and the sitting feeling of the sofa is improved.
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Description

Technical Field

[0001] The present application relates to the technical field of sofas, and in particular to a sofa seat frame structure and a sofa. Background Art

[0002] Sofas are a commonly used piece of furniture. In the prior art, sofas primarily consist of a sofa frame and cushions covered in fabric or leather. These cushions are filled with materials such as sponge to provide comfort and support. However, because people often sit in the middle of a sofa, the sponge material in the middle of the seat can gradually lose its elasticity, causing it to collapse. Utility Model Content

[0003] The embodiments of the present application disclose a sofa seat frame structure and a sofa, which can prevent the sofa seat surface from collapsing and improve the sitting comfort of the sofa.

[0004] In order to achieve the above objectives, in a first aspect, the present application discloses a sofa seat frame structure, the sofa seat frame structure comprising:

[0005] a frame, wherein a middle portion of the frame is hollowed out to form a hollow portion;

[0006] A support member, the support member is provided in the hollow portion of the frame, the support member extends along the width direction of the frame, and two ends of the support member are respectively connected to two sides of the frame along the width direction;

[0007] a plurality of first elastic bands, wherein the first elastic bands extend along the length direction of the frame, and the plurality of first elastic bands are arranged in the hollow portion at intervals along the width direction of the frame;

[0008] Multiple second elastic bands, the second elastic bands extend along the width direction of the frame, and the multiple second elastic bands are arranged along the length direction of the frame, and the second elastic bands are cross-connected with the first elastic bands, the second elastic bands include a first sub-elastic band and a second sub-elastic band, the thickness of the second sub-elastic band is greater than the thickness of the first sub-elastic band, and the second sub-elastic band is arranged adjacent to the support member.

[0009] As an optional implementation, the second sub-elastic band is formed by overlapping a plurality of the first sub-elastic bands.

[0010] As an optional implementation, the width of the first elastic band is the same as the width of the first sub-elastic band and the second sub-elastic band.

[0011] As an optional implementation, the second sub-elastic band is provided on both sides of the support member.

[0012] As an optional embodiment, the arrangement spacing between two adjacent first elastic bands is 4 cm-7 cm, and / or the arrangement spacing between two adjacent second elastic bands is 4 cm-7 cm.

[0013] As an optional embodiment, the stretch coefficient of the first elastic band is in the range of 20%-22%, and / or the stretch coefficient of the second elastic band is in the range of 10%-12%.

[0014] As an optional embodiment, the crossing pattern of the plurality of first elastic bands and the plurality of second elastic bands is plain weave.

[0015] As an optional embodiment, the two ends of the first elastic band are respectively fixed on both sides of the frame along the length direction, and both ends of the first elastic band are located on the upper surface of the frame; the two ends of the second elastic band are fixed on both sides of the frame along the width direction, and both ends of the second elastic band are located on the upper surface of the frame.

[0016] As an optional embodiment, the supporting members are provided in plurality, and the plurality of supporting members are arranged at intervals along the length direction of the frame, and the second sub-elastic band is provided on both sides of each supporting member.

[0017] In a second aspect, the present application further discloses a sofa, which includes the sofa seat frame structure as described in the first aspect above.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] The present application discloses a sofa seat frame structure and a sofa, the sofa seat frame structure includes a frame, a support member, a plurality of first elastic bands and a plurality of second elastic bands, the middle portion of the frame is hollowed out to form a hollow portion; the support member is arranged in the hollow portion of the frame, the support member extends along the width direction of the frame, and the two ends of the support member are respectively connected to the two sides of the frame along the width direction; the first elastic band extends along the length direction of the frame, and the plurality of first elastic bands are arranged in the hollow portion at intervals along the width direction of the frame; the second elastic band extends along the width direction of the frame, and the plurality of second elastic bands are arranged along the length direction of the frame, and the second elastic band is cross-connected with the first elastic band, the second elastic band includes a first sub-elastic band and a second sub-elastic band, the thickness of the second sub-elastic band is greater than that of the first sub-elastic band, and the second sub-elastic band is arranged adjacent to the support member. The sofa seat frame structure disclosed in this application utilizes multiple first elastic bands spaced apart along the width of the frame and multiple second elastic bands spaced apart along the length of the frame, with the first and second elastic bands cross-connected. This ensures uniform force distribution on the sofa seat, preventing collapse or deformation of the sofa seat due to uneven force distribution. Furthermore, the second elastic bands comprise a first sub-elastic band and a second sub-elastic band, each thicker than the first sub-elastic band. Using elastic bands of varying thickness improves the comfort of the sofa seat. The second elastic bands are positioned adjacent to the support members, providing additional localized support and preventing collapse of the sofa seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 This is a structural diagram of the sofa seat frame structure disclosed in an embodiment of the present application;

[0022] Figure 2 This is a partial structural diagram of the sofa seat frame structure disclosed in an embodiment of the present application;

[0023] Figure 3 This is a schematic diagram of the three-dimensional structure of the sofa seat frame structure disclosed in the embodiment of the present application;

[0024] Figure 4 This is a structural schematic diagram of the sofa disclosed in an embodiment of the present application. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0026] It should be noted that the terms "including," "having," and any variations thereof in the embodiments and drawings of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to the process, method, product, or apparatus.

[0027] Sofas are a commonly used piece of furniture. In the prior art, sofas primarily consist of a sofa frame and cushions covered in fabric or leather. These cushions are filled with materials such as sponge to provide comfort and support. However, because people often sit in the middle of a sofa, the sponge material in the middle of the seat can gradually lose its elasticity, causing it to collapse.

[0028] To address the above technical issues, the inventors attempted to add support to the middle portion of the sofa, such as by adding springs or elastic bands. While this approach can alleviate the problem of the middle portion of the sofa seat sagging to a certain extent, the inventors discovered that over time, the springs or elastic bands in the middle portion of the sofa would deform, still causing the middle portion of the sofa seat to sagging.

[0029] Based on the above problems, the inventors tried to cross-set the elastic bands on the sofa seat. Compared with the method of using a single spring or elastic band, this method improved the collapse problem of the middle part of the sofa seat to a certain extent. However, the effect is still limited.

[0030] On this basis, the inventor also tried to change the spacing and stretch coefficient between the elastic bands of the sofa seat. Although this method can improve the collapse problem in the middle of the sofa seat, the effect still does not meet expectations.

[0031] In view of this, the present application discloses a sofa seat frame structure. By providing a plurality of first elastic bands spaced apart along the width direction of the frame and a plurality of second elastic bands spaced apart along the length direction of the frame, and cross-connecting the first elastic bands and the second elastic bands, the sofa seat surface can be subjected to uniform force, thereby preventing the sofa seat surface from collapsing or deforming due to uneven force. On this basis, the present application further provides that the second elastic band includes a first sub-elastic band and a second sub-elastic band, and the thickness of the second sub-elastic band is greater than that of the first sub-elastic band. By using elastic bands of different thicknesses, the sitting feel of the sofa can be improved; the second elastic band is arranged adjacent to the support member to provide additional local support to prevent the sofa seat surface from collapsing.

[0032] The technical solution of this application will be described in detail below with reference to the accompanying drawings.

[0033] Please also refer to Figures 1 to 3 The present application discloses a sofa seat frame structure 100, which includes a frame 11, a support member 12, a plurality of first elastic bands 13, and a plurality of second elastic bands 14. The middle portion of the frame 11 is hollowed out to form a hollow portion 111. The support member 12 is disposed in the hollow portion 111 of the frame 11, extending along the width direction of the frame 11, and the two ends of the support member 12 are respectively connected to the two sides of the frame 11 along the width direction; the first elastic bands 13 extend along the length direction of the frame 11, and the plurality of first elastic bands 13 are arranged in the hollow portion 111 at intervals along the width direction of the frame 11. The second elastic band 14 extends along the width direction of the frame 11, and multiple second elastic bands 14 are arranged along the length direction of the frame 11, and the second elastic band 14 is cross-connected with the first elastic band 13. The second elastic band 14 includes a first sub-elastic band 141 and a second sub-elastic band 142. The thickness of the second sub-elastic band 142 is greater than the thickness of the first sub-elastic band 141, and the second sub-elastic band 142 is arranged adjacent to the support member 12.

[0034] In the embodiment of the present application, by arranging a plurality of first elastic bands 13 at intervals along the width direction of the frame 11 and arranging a plurality of second elastic bands 14 at intervals along the length direction of the frame 11, and cross-connecting the first elastic bands 13 and the second elastic bands 14, the sofa seat surface can be subjected to uniform force, thereby preventing the sofa seat surface from collapsing or deforming due to uneven force. On this basis, the present application also arranges the second elastic band 14 to include a first sub-elastic band 141 and a second sub-elastic band 142, wherein the thickness of the second sub-elastic band 142 is greater than that of the first sub-elastic band 141. By using elastic bands of different thicknesses, the sitting feel and resilience of the sofa can be improved; moreover, the second sub-elastic band 142 is arranged adjacent to the support member 12, thereby providing additional local support to prevent the collapse of the stress-bearing portion in the middle of the sofa seat surface.

[0035] like Figure 2 As shown, the frame 11 can be a rectangular frame. This allows the sofa seat frame structure 100 to be formed into a multi-person sofa when applied to a sofa. In other words, the sofa seat frame structure 100 of the present application is applicable to multi-person sofas. Of course, as other embodiments, the frame can also be used for, for example, an oval sofa or a round sofa.

[0036] Alternatively, the frame 11 can be a wooden frame. Of course, as other embodiments, the frame 11 can also be a metal frame or a plastic frame.

[0037] Optionally, the frame 11 may be an integrated frame, or the frame 11 may be a split frame. Taking the split frame as an example, the frame 11 may be formed by splicing a plurality of rods.

[0038] Alternatively, as can be seen from the foregoing, the frame 11 can be a rectangular frame. Thus, when the frame 11 is used to form a two-seater sofa, the support member 12 can be positioned approximately in the middle of the frame 11. That is, the support member 12 can roughly divide the hollow portion 111 of the frame 11 into two sub-hollow portions along the length. Alternatively, when the frame 11 is used to form a three-seater sofa, the support member 12 can still be positioned approximately in the middle of the frame 11. Alternatively, multiple support members 12 can be provided, with the multiple support members 12 spaced apart along the length of the frame 11. For example, in a multi-seater sofa, a support member 12 can be provided for every other seat.

[0039] By adopting a plurality of support members 12, the weight of a person sitting on the sofa can be evenly distributed, the pressure on a single point can be reduced, and the overall load-bearing capacity of the sofa can be enhanced.

[0040] Optionally, the second sub-elastic band 142 can be provided on one side of the support member 12, or on both sides of the support member 12. This is because the elastic band can provide a certain degree of elasticity and cushioning effect, making the sofa softer and more comfortable to sit on, thereby improving the sitting feel of the sofa. At the same time, the elastic band can provide additional support to prevent the sofa seat from collapsing.

[0041] Exemplarily, when there are multiple support members 12, greater supporting force can be provided, and second sub-elastic bands 142 are provided on both sides of the multiple support members 12 to provide additional local support to prevent the sofa seat from collapsing, and at the same time, it is beneficial to improve the sitting feel of the sofa.

[0042] Optionally, the thickness of the second sub-elastic band 142 is greater than the thickness of the first sub-elastic band 141, including: the thickness of the second sub-elastic band 142 itself is greater than the thickness of the first sub-elastic band 141, that is, the second sub-elastic band 142 is a complete band, and its own thickness is greater than the thickness of the first sub-elastic band 141. Alternatively, the second sub-elastic band 142 may be formed by stacking multiple first sub-elastic bands 141, in which case the overall thickness of the second sub-elastic band 142 is greater than the thickness of the first sub-elastic band 141.

[0043] This embodiment uses the example of a second sub-elastic band 142 formed by stacking multiple first sub-elastic bands 141. In some embodiments, the second sub-elastic band 142 can be formed by stacking multiple first sub-elastic bands 141. The number of first sub-elastic bands 141 stacked to form the second sub-elastic band 142 can be, for example, two, three, or four, and is not specifically limited in this embodiment.

[0044] By stacking the first sub-elastic band 141 to form the second sub-elastic band 142, the second sub-elastic band 142 can have a greater supporting capacity than the first sub-elastic band 141. At the same time, there is no need to produce the second sub-elastic band 142 separately, so that the elastic bands can be manufactured in a unified manner, which is conducive to simplifying the production operation process.

[0045] Optionally, the first elastic band 13, the first sub-elastic band 141 and the second sub-elastic band 142 can be made of elastic materials, such as nylon elastic band, polyester elastic band, braided band, etc., which are not specifically limited in the present embodiment.

[0046] In some embodiments, the second sub-elastic band 142 can be an elastic band with a weaving density greater than that of the first sub-elastic band 141. The high-density woven elastic band is denser in structure, can better disperse pressure, and provide more uniform support, thereby reducing deformation caused by excessive local force and improving overall comfort.

[0047] In some embodiments, the width of the first elastic band 13 is the same as the width of the first sub-elastic band 141 and the second sub-elastic band 142. For example, the widths of the first elastic band 13, the first sub-elastic band 141, and the second sub-elastic band 142 can all be 7 cm, 6 cm, 5 cm, etc., which can be selected according to actual needs.

[0048] The first elastic band 13, the first sub-elastic band 141, and the second sub-elastic band 142 have a uniform width standard, which can simplify the production process and improve production efficiency. At the same time, the use of elastic bands of the same width can ensure that the overall force on the sofa seat is uniform, preventing the sofa seat from collapsing due to uneven force.

[0049] In some embodiments, a second sub-elastic band 142 may be provided on both sides of the support member 12. The number of the second sub-elastic bands 142 on both sides of the support member 12 may be adjusted according to actual production requirements, for example, two, three or four, etc., and this embodiment of the present application does not specifically limit this. Figure 1 As shown, two second sub-elastic bands 142 are provided on both sides of the support member 12. By arranging the second sub-elastic bands 142 on both sides of the support member 12, additional local support can be provided to prevent the sofa seat from collapsing.

[0050] In some embodiments, the spacing between two adjacent first elastic bands 13 is 4 cm to 7 cm. The spacing between two adjacent first elastic bands 13 can be, for example, 4 cm, 5 cm, 6 cm, and 7 cm, etc., which is not specifically limited in the present embodiment.

[0051] Correspondingly, the spacing between two adjacent second elastic bands 14 is 4 cm to 7 cm. The spacing between two adjacent second elastic bands 14 can be, for example, 4 cm, 5 cm, 6 cm, and 7 cm, etc., which is not specifically limited in the present embodiment.

[0052] For example, in the sofa seat frame structure 100 , the spacing between two adjacent first elastic bands 13 may be 5 cm, and the spacing between two adjacent second elastic bands 14 may be 6 cm.

[0053] By reasonably limiting the spacing between the elastic bands, we can prevent the elastic bands from being too loose, which may cause the sofa seat to deform and collapse. At the same time, we can also prevent the sofa from being too hard and reducing the sitting comfort due to the elastic bands being too tightly arranged.

[0054] That is, the first elastic band 13 and the second elastic band 14 are arranged at the above-mentioned spacing, which can improve the sitting feeling of the sofa and provide a stronger supporting force for the sofa to prevent the sofa seat from collapsing.

[0055] In some embodiments, the stretch coefficient of the first elastic band 13 is in the range of 20%-22%, and / or the stretch coefficient of the second elastic band 14 is in the range of 10%-12%. The stretch coefficient range of the first elastic band 13 can be, for example, 20%, 21%, and 22%, etc., which is not specifically limited in the embodiments of the present application. The stretch coefficient of the second elastic band 14 can be, for example, 10%, 11%, and 12%, etc., which is not specifically limited in the embodiments of the present application. Exemplarily, the stretch coefficient of the first elastic band 13 in the sofa seat frame structure 100 can be 21%, and the stretch coefficient of the second elastic band can be 10%. By adjusting the stretch coefficients of the first elastic band and the second elastic band, the support strength of the sofa seat surface can be increased, and at the same time, the sitting feel of the sofa can be improved.

[0056] In some embodiments, the plurality of first elastic bands 13 and the plurality of second elastic bands 14 are interwoven in a plain weave. Plain weave refers to interweaving each first elastic band 13 with each second elastic band 1. Cross-linking the plurality of first elastic bands 13 and the plurality of second elastic bands 14 in a vertical plain weave helps distribute the stress on the sofa seat, preventing excessive localized stress from causing the sofa seat to collapse or deform. Of course, in other embodiments, the plurality of first elastic bands and the plurality of second elastic bands can also be woven in a twill weave, for example. The specific arrangement can be determined based on actual needs and is not specifically limited in this embodiment.

[0057] In some embodiments, the ends of the first elastic band 13 are respectively fixed to the two sides of the frame 11 along the length direction, and both ends of the first elastic band 13 are located on the upper surface of the frame 11; the ends of the second elastic band 14 are fixed to the two sides of the frame 11 along the width direction, and both ends of the second elastic band 14 are located on the upper surface of the frame 11. Compared with the method of fixing the ends of the elastic band to the side of the frame, by fixing the ends of the elastic band to the upper surface of the frame, the elastic band can be fixed more firmly and prevent the elastic band from falling off the frame.

[0058] Alternatively, nails can be used to secure the ends of the first and second elastic bands 13, 14 to the upper surface of the frame 11. For example, the ends of the first and second elastic bands 13, 14 can be secured to the upper surface of the frame 11 by driving the nails at a 45-degree angle. This method increases the surface area of ​​contact between the nails and the frame, thereby improving the stability of the fixing points.

[0059] Alternatively, hooks may be provided at both ends of the first elastic band 13 and the second elastic band 14, and connecting hooks may be provided at intervals on the upper surface of the frame 11. The hooks at both ends of the first elastic band 13 and the second elastic band 14 can then be hooked onto the connecting hooks on the upper surface of the frame 11, thereby securing the ends of the first elastic band 13 and the second elastic band 14 to the upper surface of the frame 11. The design of the hooks and connecting hooks makes the installation process of the elastic bands simpler and faster, and also makes it easier to replace the elastic bands.

[0060] In the embodiment of the present application, by arranging multiple first elastic bands 13 at intervals along the width direction of the frame 11 and arranging multiple second elastic bands 14 at intervals along the length direction of the frame 11, and cross-connecting the first elastic bands 13 and the second elastic bands 14, it is possible to ensure that the sofa seat is subjected to uniform force, thereby preventing the sofa seat from collapsing or deforming due to uneven force. In addition, the second elastic band 14 includes a first sub-elastic band 141 and a second sub-elastic band 142, and the thickness of the second sub-elastic band 142 is greater than that of the first sub-elastic band 141. By using elastic bands of different thicknesses, the sitting comfort of the sofa can be improved; moreover, the second sub-elastic band 142 is arranged adjacent to the support member 12, which can provide additional local support to prevent the sofa seat from collapsing.

[0061] like Figure 4 As shown, the present embodiment also discloses a sofa 200, which includes the sofa seat frame structure 100 described in the above embodiment. It is understood that in addition to the sofa seat frame structure described above, the sofa may also include, for example, a seat cushion 101, which can be mounted on the outside of the sofa seat frame structure. The seat cushion can be filled with a filler such as sponge or latex to further enhance the sitting experience of the sofa.

[0062] The above is a detailed introduction to the sofa seat frame structure and sofa disclosed in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the sofa seat frame structure and sofa of the present application and its core concept. At the same time, for those skilled in the art, according to the concept of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation of the present application.

Claims

1. A sofa seat frame structure, characterized in that: include: a frame, wherein a middle portion of the frame is hollowed out to form a hollow portion; A support member, the support member is provided in the hollow portion of the frame, the support member extends along the width direction of the frame, and two ends of the support member are respectively connected to two sides of the frame along the width direction; a plurality of first elastic bands, wherein the first elastic bands extend along the length direction of the frame, and the plurality of first elastic bands are arranged in the hollow portion at intervals along the width direction of the frame; Multiple second elastic bands, the second elastic bands extend along the width direction of the frame, and the multiple second elastic bands are arranged along the length direction of the frame, and the second elastic bands are cross-connected with the first elastic bands, the second elastic bands include a first sub-elastic band and a second sub-elastic band, the thickness of the second sub-elastic band is greater than the thickness of the first sub-elastic band, and the second sub-elastic band is arranged adjacent to the support member.

2. The sofa seat frame structure according to claim 1, characterized in that: The second sub-elastic band is formed by stacking a plurality of the first sub-elastic bands.

3. The sofa seat frame structure according to claim 2, characterized in that: The width of the first elastic band is the same as the width of the first sub-elastic band and the width of the second sub-elastic band.

4. The sofa seat frame structure according to claim 2, characterized in that: The second sub-elastic bands are arranged on both sides of the supporting member.

5. The sofa seat frame structure according to claim 1, characterized in that: The spacing between two adjacent first elastic bands is 4 cm to 7 cm, and / or the spacing between two adjacent second elastic bands is 4 cm to 7 cm.

6. The sofa seat frame structure according to claim 1, characterized in that: The stretch coefficient of the first elastic band is in the range of 20%-22%, and / or the stretch coefficient of the second elastic band is in the range of 10%-12%.

7. The sofa seat frame structure according to any one of claims 1 to 6, characterized in that: The crossing manner of the plurality of first elastic bands and the plurality of second elastic bands is plain weaving.

8. The sofa seat frame structure according to any one of claims 1 to 6, characterized in that: The two ends of the first elastic band are respectively fixed on both sides of the frame along the length direction, and both ends of the first elastic band are located on the upper surface of the frame; the two ends of the second elastic band are fixed on both sides of the frame along the width direction, and both ends of the second elastic band are located on the upper surface of the frame.

9. The sofa seat frame structure according to any one of claims 1 to 6, characterized in that: The supporting members are provided in plurality, and the supporting members are arranged at intervals along the length direction of the frame, and the second sub-elastic band is provided on both sides of each supporting member.

10. A sofa, characterized in that: The sofa comprises the sofa seat frame structure according to any one of claims 1 to 9.